JP2019209358A - Manufacturing method of laminate molding object and laminate molding object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a layered product and a layered product capable of manufacturing a layered product by bonding dissimilar metals while increasing strength at a joint portion of dissimilar metals. SOLUTION: A first molded body main body modeling step of stacking a welding bead 25 formed of a filler metal M1 of a first metal material to model a main body W1a of a first molded body W1, and a first molded body. A plurality of first ridges W1b made of the weld bead 25 of the first metal material and a plurality of second ridges W2b made of the weld bead 25 of the second metal material are formed on the main body W1a of W1. A joint part forming step of forming a joint part WS in which the protrusion parts W1b and the second protrusion parts W2b are alternately arranged, and a welding bead 25 of a second metal material is laminated on the joint part WS to form a second part. A second modeling body main body modeling step of modeling the main body W2a of the body W2. [Selection diagram] Figure 2

Description

  The present invention relates to a method for manufacturing a layered object and a layered object.

  In recent years, the need for 3D printers as production means has increased, and research and development have been conducted for practical application in the aircraft industry and the like, particularly for application to metal materials. A 3D printer using a metal material uses a heat source such as a laser or an arc to melt a metal powder or a metal wire, and laminates the molten metal to form a model.

  Moreover, the thing of patent document 1 is known as a technique which joins a dissimilar metal and shape | molds a molded article, laminating | stacking a bead. In this technology, a metal laminate structure in which dissimilar metal layers are successively laminated by repeating bead formation with low heat input using metal powder, and a combination of metals that generates fragile intermetallic compounds is formed. Even in the case of stacking, the necessary strength is ensured.

JP 2017-214635 A

  By the way, in Patent Document 1, an attempt is made to secure the necessary strength by laminating the width and area of the first bead and the second bead of dissimilar metals, but sufficient mechanical joining force is obtained. There was room for further improvement.

  The present invention has been made in view of the above-described matters, and the purpose thereof is a layered object that can form a layered object by bonding different kinds of metals while increasing the strength at a joining point between different kinds of metals. It is in providing the manufacturing method of this and a layered modeling thing.

The above object of the present invention can be achieved by the following constitution.
(1) A first shaped body formed by laminating a weld bead obtained by melting and solidifying a filler metal of a first metal material, and a filler metal of a second metal material different from the first metal material are melted and solidified. A method for producing a layered object manufactured by joining a second modeled body obtained by laminating the weld beads.
A first model body main body modeling step of modeling the main body of the first model by laminating the welding beads of the first metal material;
A plurality of first protrusions made of the welding bead of the first metal material and a plurality of second protrusions made of the welding bead of the second metal material are formed on the main body of the first shaped body. And a joint forming step for forming a joint in which the first protrusions and the second protrusions are alternately arranged,
A second modeling body main body modeling step of modeling the main body of the second modeling body by laminating the welding bead of the second metal material on the joint;
Including
The welding bead of the first ridge is between the welding beads of the second ridge or between the welding bead of the second ridge and the main body of the second shaped body in the stacking direction. Sandwiched between the weld beads and
The weld bead of the second ridge portion is, in the stacking direction, between the weld beads of the first ridge portion or between the weld bead of the first ridge portion and the main body portion of the first shaped body. A method for producing a layered object sandwiched between the weld beads.
(2) melting and solidifying a first shaped body formed by laminating a weld bead obtained by melting and solidifying a filler metal of a first metal material, and a filler metal of a second metal material different from the first metal material; A laminated shaped article manufactured by joining a second shaped body formed by laminating welded beads,
A body portion of the first modeled body that is modeled by laminating the welding beads of the first metal material;
A plurality of first protrusions made of the welding bead of the first metal material and a plurality of second protrusions made of the welding bead of the second metal material are formed on the main body of the first shaped body. And a joint portion formed by alternately arranging the first ridge portions and the second ridge portions;
A main body portion of the second shaped body that is shaped by laminating the weld bead of the second metal material on the joint portion;
Including
The welding bead of the first ridge is between the welding beads of the second ridge or between the welding bead of the second ridge and the main body of the second shaped body in the stacking direction. Sandwiched between the weld beads and
The weld bead of the second ridge portion is, in the stacking direction, between the weld beads of the first ridge portion or between the weld bead of the first ridge portion and the main body portion of the first shaped body. A layered object sandwiched between the weld beads.

  ADVANTAGE OF THE INVENTION According to this invention, while increasing the intensity | strength in the joining location of dissimilar metals, a dissimilar metal can be joined and a layered modeling thing can be modeled.

It is a block diagram of the manufacturing system used for the manufacturing method of a layered object. It is sectional drawing which shows the structure of an additive-molded article typically. FIG. 3 is a partially enlarged cross-sectional view of FIG. 2 showing a joint portion between a first model body and a second model body. The manufacturing procedure of a layered object is shown, (a) is a cross-sectional view of a first model body main body modeling process, and (b) is a plan view of a first model body main body modeling process. The manufacturing procedure of a layered object is shown, (a) is a cross-sectional view of a joint portion forming step, and (b) is a plan view of the joint portion forming step. The manufacturing procedure of a layered object is shown, (a) is a cross-sectional view of a second model body main body part modeling process, and (b) is a plan view of a second model body main body part modeling process. It is sectional drawing which shows typically the laminate-molded article explaining the modification 1. FIG. It is sectional drawing which shows typically the laminate-molded article explaining the modification 2. FIG.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of a manufacturing system used in the method for manufacturing a layered object of the present invention.

  The manufacturing system 100 having this configuration includes an additive manufacturing apparatus 11 and a controller 15 that performs overall control of the additive manufacturing apparatus 11.

  The additive manufacturing apparatus 11 includes a welding robot 19 having a torch 17 on a tip shaft, and a filler material supply unit 21 that supplies a filler material (welding wire) M to the torch 17. The torch 17 holds the filler material M in a state protruding from the tip.

  The controller 15 includes a CAD / CAM unit 31, a trajectory calculation unit 33, a storage unit 35, and a control unit 37 to which these are connected.

  The welding robot 19 is an articulated robot, and the filler material M is supported on the torch 17 provided on the tip shaft so as to be continuously supplied. The position and orientation of the torch 17 can be arbitrarily set three-dimensionally within the range of the degree of freedom of the robot arm.

  The torch 17 has a shield nozzle (not shown), and shield gas is supplied from the shield nozzle. The arc welding method used in this configuration may be either a consumable electrode type such as covering arc welding or carbon dioxide arc welding, or a non-consumable electrode type such as TIG welding or plasma arc welding. It is selected appropriately according to.

  For example, in the case of the consumable electrode type, a contact tip is disposed inside the shield nozzle, and a filler material M to which a molten current is fed is held by the contact tip. The torch 17 generates an arc from the tip of the filler material M in a shield gas atmosphere while holding the filler material M. The melt material M is fed from the melt material supply unit 21 to the torch 17 by a feed mechanism (not shown) attached to a robot arm or the like. When the melt material M that is continuously fed is melted and solidified while moving the torch 17, a linear weld bead 25 that is a melt-solidified body of the melt material M is formed.

  The heat source for melting the filler material M is not limited to the arc described above. For example, a heat source using other methods such as a heating method using both an arc and a laser, a heating method using plasma, and a heating method using an electron beam or a laser may be adopted. When heating by an electron beam or a laser, the amount of heating can be controlled more finely, the state of the weld bead can be maintained more appropriately, and the quality of the laminated structure can be further improved.

  The CAD / CAM unit 31 creates shape data of the layered object W to be manufactured, and then generates layer shape data representing the shape of each layer by dividing into a plurality of layers. The trajectory calculation unit 33 obtains the movement trajectory of the torch 17 based on the generated layer shape data. The storage unit 35 stores data such as the generated layer shape data and the movement trajectory of the torch 17.

  The control unit 37 drives the welding robot 19 by executing a drive program based on the layer shape data stored in the storage unit 35 and the movement trajectory of the torch 17. That is, the welding robot 19 moves the torch 17 while melting the filler metal M with an arc based on the movement trajectory of the torch 17 generated by the trajectory calculation unit 33 according to a command from the controller 15. FIG. 1 shows a state in which the layered object W is formed by moving the torch 17 along the upper surface of the plate-like base 20 to form the weld bead 25.

  The manufacturing system 100 having the above configuration melts the melt material M while moving the torch 17 by driving the welding robot 19 along the movement trajectory of the torch 17 generated from the set layer shape data. The filler material M is supplied onto the base 20. As a result, a layered object W in which a plurality of linear weld beads 25 are arranged and stacked on the upper surface of the base 20 is formed.

  By the way, in the layered modeling, for example, a layered model W may be manufactured by joining different metals such as iron and aluminum. In such a case, a brittle metal compound is generated at the joint portion of the dissimilar metals, and the strength may be reduced.

  For this reason, in the manufacturing method according to the present embodiment, when manufacturing the layered object W having joint portions between different metals, the mechanical strength of the joint portions is increased.

Hereinafter, the layered object W manufactured in the present embodiment will be described with reference to FIGS. 2 and 3.
As shown in FIG. 2, the layered object W includes a first shaped body W1 formed by laminating a weld bead 25 obtained by melting and solidifying a filler metal of the first metal material, and a second shape different from the first metal material. It is manufactured by joining a second shaped body W2 formed by laminating welding beads 25 obtained by melting and solidifying a filler metal material.
Here, the first metal material is made of steel and the second metal material is made of aluminum (including pure aluminum and aluminum alloy). However, the present invention is not limited to this, and the second metal material may be made of titanium. Also, the first metal material is mild steel, the second metal material is stainless steel, stellite alloy, colmonoy alloy, etc., the first metal material is stainless steel, and the second metal material is stellite alloy or colmonoy alloy. It may be a combination of different types of steel, such as a simple combination.

  In the present embodiment, the first modeled body W1 and the second modeled body W2 are each formed by arranging a plurality of weld beads 25 formed along the same direction in the width direction orthogonal to the extension direction of the weld beads 25. Each layer is formed and formed by laminating these welding beads 25. The welding bead 25 preferably has a diameter of about 4 mm to 5 mm.

  The first shaped body W1 includes a plate-like main body W1a stacked on the upper surface of the base 20 (see FIG. 1), and a protrusion formed on the joint side of the main body W1a with the second shaped body W2. It has a plurality of first protrusions W1b. The first protrusions W1b are formed so as to protrude from the main body W1a, and are formed at intervals in the width direction orthogonal to the extending direction of the weld bead 25.

  The second shaped body W2 has a plate-like main body W2a and a plurality of second ridges W2b composed of ridges formed on the side of the main body W2a joined to the first shaped body W1. Yes. The 2nd protrusion part W2b is formed so that it may protrude from the main-body part W2a, and is formed in the width direction orthogonal to the expansion | extension direction of the welding bead 25 at intervals.

  In the joint WS, the first protrusion W1b of the first modeling body W1 enters between the second protrusions W2b of the second modeling body W2, and the second protrusion of the second modeling body W2. W2b enters between the first protrusions W1b of the first shaped body W1. And the 1st modeling body W1 and the 2nd modeling body W2 are joined mutually by the part by which the 1st protrusion part W1b and the 2nd protrusion part W2b meshed | joined with each other as the junction part WS. Moreover, the 1st protrusion part W1b and the 2nd protrusion part W2b are formed so that the width | variety of an arrangement direction may differ for every layer.

That is, as shown in FIG. 3, the welding bead 25 of the first protrusion W1b is sandwiched between the welding beads 25 of the second protrusion W2b in the stacking direction, and the welding bead 25 of the second protrusion W2b. Is sandwiched between the welding beads 25 of the first protrusion W1b in the stacking direction. Therefore, at the boundary between the first ridge W1b of the first modeled body W1 and the second ridge W2b of the second modeled body W2, the weld beads 25 overlap each other and are stacked in the stacking direction.
Thereby, an anchor effect can be given at the boundary portion between the first protrusion W1b and the second protrusion W2b, and the bonding strength between the first structure W1 and the second structure W2 made of different metals can be obtained. Can be increased.

Next, the procedure for modeling the layered object W by the manufacturing system 100 having this configuration will be described in detail.
4 to 6 show the layered object in each manufacturing process in order to explain the manufacturing procedure of the layered object.

  When manufacturing the layered object W, the manufacturing system 100 supplies the filler metal M1 of the first metal material made of the metal material of the first model W1 to the torch 17 at the time of modeling the first model W1, During modeling of the second model body W2, the filler material M supplied from the filler material supply unit 21 is switched from the filler material M1 to the filler material M2 of the second metal material made of the metal material of the second model body W2. To the torch 17 (see FIG. 1).

(First modeling body body modeling process)
As shown in FIG. 4, a layer is formed by supplying the filler metal M1 made of the metal material of the first shaped body W1 to the torch 17 and arranging the weld beads 25 extending in the same direction by the torch 17 in the arrangement direction. . Furthermore, it laminates | stacks by similarly forming several welding beads 25 on this layer, and the main-body part W1a of the 1st modeling body W1 is modeled by repeating this. In the present embodiment, the weld beads 25 are respectively formed in the lower layer aiming at an intermediate position between two weld beads 25 adjacent in the arrangement direction.

(Joint forming process)
Next, as shown in FIG. 5, the second protrusion of the weld bead 25 and the second shaped body W <b> 2 serving as the first protrusion W <b> 1 b of the first shaped body W <b> 1 on the upper part of the main body W <b> 1 a of the first shaped body W <b> 1. A welding bead 25 to be the strip W2b is formed for each layer and further laminated. And the junction part WS in which the 1st protrusion part W1b and the 2nd protrusion part W2b were mutually meshed | engaged is modeled. At this time, the welding bead 25 of the first ridge W1b is formed by supplying the filler material M1 to the torch 17, and the welding bead 25 of the second ridge W2b is supplying the filler M2 to the torch 17. To form. In addition, when shaping | molding the junction part WS, adjusting the width dimension and protrusion dimension of the 1st protrusion part W1b and the 2nd protrusion part W2b suitably according to the joining intensity | strength required by this junction part WS. preferable.
In particular, in the present embodiment, the center position of the weld bead 25 is shifted by ½ of the diameter of the weld bead 25 with respect to the center position of the upper and lower layers of the weld bead 25. At the boundary with the second protrusion W2b, the weld beads 25 overlap each other and are stacked in the stacking direction.

  Also, the width in the arrangement direction of the first protrusion W1b and the second protrusion W2b is made different for each layer, that is, the number of the welding beads 25 in the arrangement direction is made different for each layer, and each protrusion W1b, Since the shape of W2b is axisymmetric, the shearing force F (see FIG. 3) acting on the boundary portions on both sides in the arrangement direction of the protruding portions W1b and W2b becomes equal.

  In this embodiment, the width in the arrangement direction is varied for each layer, but the present invention is not limited to this, and may be varied for a plurality of layers. That is, the welding bead 25 of the first protrusion W1b is sandwiched between the welding beads 25 of the second protrusion W2b in the stacking direction, and the welding bead 25 of the second protrusion W2b is the first in the stacking direction. What is necessary is just to become the structure clamped between the welding beads 25 of 1 protrusion part W1b.

(Second modeling body body modeling process)
Then, as shown in FIG. 6, when the joint portion WS is formed, the filler material M <b> 2 made of the metal material of the second shaped body W <b> 2 is supplied to the torch 17, and extends in the same direction by the torch 17 on the joint portion WS. A layer is formed by arranging the welding beads 25 in the arrangement direction. Furthermore, similarly, by laminating a plurality of welding beads 25 on the layer and repeating this, the main body portion W2a of the second shaped body W2 is shaped. Therefore, the layered object W is manufactured in which the first model body W1 and the second model body W2 made of different metals are joined at the joint part WS.

  As described above, according to the manufacturing method of the layered object W and the layered object W according to the present embodiment, the joint WS between the first model body W1 and the second model body W2 made of different metals is provided. A plurality of first protrusions W1b and second protrusions W2b are alternately arranged, and the welding beads 25 of the first protrusions W1b are between the welding beads 25 of the second protrusions W2b in the stacking direction. The weld bead 25 of the second ridge W2b is sandwiched between the weld beads 25 of the first ridge W1b in the stacking direction. Thereby, the 1st modeling body W1 and the 2nd modeling body W2 which consist of a dissimilar metal can manufacture the laminate-molded article W joined with high intensity | strength. In particular, at the boundary between the first ridge W1b and the second ridge W2b in the joint WS, the weld bead 25 enters and is engaged, and an anchor effect can be provided. Therefore, the strength against the shearing force F (see FIG. 3) acting on the boundary between the first ridge W1b and the second ridge W2b can be increased, and the first model W1 and the second model W2. It is possible to increase the bonding strength.

(Modification 1)
FIG. 7 is a cross-sectional view of a layered object illustrating the first modification. In the modified example 1, in the bonding portion forming step, the protruding lengths of the first protrusions W1b in the stacking direction are alternately different in the arrangement direction, and similarly, the protrusions of the second protrusions W2b in the stacking direction. The joints WS are shaped so that the protruding lengths are alternately different in the arrangement direction.

  Accordingly, the line L1 passing through the abutting portion between the first protrusion W1b of the first modeling body W1 and the main body W2a of the second modeling body W2 and the second protrusion W2b of the second modeling body W2 and the first modeling. The line L2 passing through the abutting portion of the body W1 with the main body W1a is not linear but is uneven.

  For example, in the said embodiment, the line L1 which passes along the butting | matching location of the 1st protrusion W1b of the 1st modeling body W1 and the main-body part W2a of the 2nd modeling body W2, and the 2nd protrusion W2b of the 2nd modeling body W2. And the line L2 passing through the abutting portion between the first modeled body W1 and the main body W1a is linear (see FIG. 2).

  Here, for example, when the strength of the first modeled body W1 is lower than the strength of the second modeled body W2, the line L2 is assumed as a fracture line, but the line L2 is uneven as in the first modification. By doing so, the breaking line becomes longer, and the breaking strength at the joint WS between the first shaped body W1 and the second shaped body W2 can be increased.

  In addition, in this modification 1, although the protrusion length to the lamination direction of both the 1st protrusion part W1b and each 2nd protrusion part W2b is made to change alternately in the sequence direction, its intensity | strength is high. Even if only the projecting length in the stacking direction of the projecting portion of the molded body on the side is increased, the effect of this modification can be exhibited.

(Modification 2)
FIG. 8 is a cross-sectional view of a layered object for explaining the second modification. In the modified example 2, in the joint forming process, the first protrusion W1b of the first structure W1 is gradually widened in the stacking direction, and instead, the protrusion W2b of the second structure W2 is stacked in the stacking direction. The joint WS is shaped so as to gradually become narrower toward the front.
In this case, the welding bead 25 of the first protrusion W1b is sandwiched between the welding bead 25 of the second protrusion W2b and the welding bead 25 of the main body W2a of the second shaped body W2 in the stacking direction. And the welding bead 25 of the 2nd protrusion part W2b is clamped between the welding bead 25 of the 1st protrusion part W1b and the welding bead 25 of the main-body part W1a of the 1st modeling body W1 in the lamination direction.

  Therefore, also in this modification 2, the anchor effect of the 1st protrusion part W1b and the 2nd protrusion part W2b in the junction part WS can be improved more, and the 1st modeling body W1 and the 2nd modeling body W2 A layered object W with increased bonding strength can be manufactured.

  It should be noted that the present invention is not limited to the above-described embodiment, and those skilled in the art can modify or apply the configurations of the embodiments to each other, based on the description of the specification, and well-known techniques. The present invention is intended to be included in the scope for which protection is sought.

  For example, in the manufacturing system 100 of the said embodiment, the filler material M1 and the filler material M2 were switched and supplied to the torch 17 from the filler material supply part 21, and the 1st modeling body W1 and the 2nd modeling body W2 were modeled. However, the manufacturing system 100 may have other configurations. For example, a torch 17 for forming the weld bead 25 with the filler material M1 and a torch 17 for forming the weld bead 25 with the filler material M2 are provided, and the weld bead 25 is formed with these two torches 17 to form the first shaped body. You may model W1 and the 2nd modeling body W2.

  Moreover, in the said embodiment, although the 1st protrusion part W1b and the 2nd protrusion part W2b were set as the structure formed with the linear some welding bead 25, this invention is not limited to this, For example, circular Alternatively, each layer may be configured such that annular weld beads such as rectangular or rectangular or spiral weld beads are alternately arranged in a direction away from the center. Also in this case, the welding bead of the 1st protrusion part is between the welding beads of the 2nd protrusion part, or the welding bead of the 2nd protrusion part, and the welding bead of the main part of the 2nd modeling object in the lamination direction. And the weld bead of the second ridge portion is welded between the weld beads of the first ridge portion or between the weld bead of the first ridge portion and the main body portion of the first shaped body in the stacking direction. By being sandwiched between the beads, the bonding strength at the bonding portion WS can be increased.

As described above, the following items are disclosed in this specification.
(1) A first shaped body formed by laminating a weld bead obtained by melting and solidifying a filler metal of a first metal material, and a filler metal of a second metal material different from the first metal material are melted and solidified. A method for producing a layered object manufactured by joining a second modeled body obtained by laminating the weld beads.
A first model body main body modeling step of modeling the main body of the first model by laminating the welding beads of the first metal material;
A plurality of first protrusions made of the welding bead of the first metal material and a plurality of second protrusions made of the welding bead of the second metal material are formed on the main body of the first shaped body. And a joint forming step for forming a joint in which the first protrusions and the second protrusions are alternately arranged,
A second modeling body main body modeling step of modeling the main body of the second modeling body by laminating the welding bead of the second metal material on the joint;
Including
The welding bead of the first ridge is between the welding beads of the second ridge or between the welding bead of the second ridge and the main body of the second shaped body in the stacking direction. Sandwiched between the weld beads and
The welding bead of the second ridge is formed between the welding bead of the first ridge or between the welding bead of the first ridge and the main body of the first modeled body in the stacking direction. A method for producing a layered object sandwiched between the weld beads.
As a result, it is possible to manufacture a layered object in which the first modeled body and the second modeled body made of different metals are joined with high strength. In particular, the shear strength at the boundary between the first protrusion and the second protrusion can be increased, and the bonding strength between the first structure and the second structure can be increased.

(2) In the joint forming step, the weld bead and the second metal of the first metal material are arranged such that the first protrusion and the second protrusion have different widths in the arrangement direction for each layer. The method for producing a layered object according to (1), wherein the weld bead of material is formed.
Thereby, in the boundary part of the 1st protrusion part and the 2nd protrusion part in a junction part, it will be in the state which the mutual weld bead entered and it was able to have, and can have an anchor effect.

(3) In the joint forming step, at least one protruding length in the stacking direction of each of the first protruding portions and each of the second protruding portions is alternately different in the arrangement direction (1) or ( The manufacturing method of the layered product as described in 2).
Thereby, the line which passes along the butting | matching location of the 1st protrusion part of a 1st modeling body, and the main-body part of a 2nd modeling body, and the butting | matching of the 2nd protrusion part of a 2nd modeling body, and the main-body part of a 1st modeling body At least one of the lines passing through the location can be made uneven, and the line can be lengthened to increase the breaking strength at the joint between the first modeled body and the second modeled body.

(4) In the bonding part forming step, the welding bead of the first metal material and the welding bead of the second metal material so that the first protrusion is gradually widened in the stacking direction. The manufacturing method of the layered object according to any one of (1) to (3).
Thereby, the anchor effect of the 1st ridge part and the 2nd ridge part in a junction part can be raised more, and the layered product in which the joint strength of the 1st model object and the 2nd model object was raised further. Can be manufactured.

(5) A first shaped body formed by laminating a weld bead obtained by melting and solidifying a filler metal of the first metal material, and a filler metal of a second metal material different from the first metal material are melted and solidified. A laminated shaped article manufactured by joining a second shaped body formed by laminating welded beads,
A body portion of the first modeled body that is modeled by laminating the welding beads of the first metal material;
A plurality of first protrusions made of the welding bead of the first metal material and a plurality of second protrusions made of the welding bead of the second metal material are formed on the main body of the first shaped body. And a joint portion formed by alternately arranging the first ridge portions and the second ridge portions;
A main body portion of the second shaped body that is shaped by laminating the weld bead of the second metal material on the joint portion;
Including
The welding bead of the first ridge is between the welding beads of the second ridge or between the welding bead of the second ridge and the main body of the second shaped body in the stacking direction. Sandwiched between the weld beads and
The weld bead of the second ridge portion is, in the stacking direction, between the weld beads of the first ridge portion or between the weld bead of the first ridge portion and the main body portion of the first shaped body. A layered object sandwiched between the weld beads.
As a result, it is possible to manufacture a layered object in which the first modeled body and the second modeled body made of different metals are joined with high strength. In particular, the shear strength at the boundary between the first protrusion and the second protrusion can be increased, and the bonding strength between the first structure and the second structure can be increased.

(6) The layered object according to (5), wherein the first protrusions and the second protrusions have different widths in the arrangement direction for each layer.
Thereby, in the boundary part of the 1st protrusion part and the 2nd protrusion part in a junction part, it will be in the state which the mutual weld bead entered and it was able to have, and can have an anchor effect.

(7) The layered manufacturing according to (5) or (6), wherein projecting lengths in the stacking direction of at least one of the first projecting ridges and the second projecting ridges are alternately different in the arrangement direction. Stuff.
Thereby, the line which passes along the butting | matching location of the 1st protrusion part of a 1st modeling body, and the main-body part of a 2nd modeling body, and the butting | matching of the 2nd protrusion part of a 2nd modeling body, and the main-body part of a 1st modeling body At least one of the lines passing through the location can be made uneven, and the line can be lengthened to increase the breaking strength at the joint between the first modeled body and the second modeled body.

(8) The layered object according to any one of (5) to (7), wherein the first protrusion is gradually widened in the stacking direction.
Thereby, the anchor effect of the 1st ridge part and the 2nd ridge part in a junction part can be raised more, and the layered product in which the joint strength of the 1st model object and the 2nd model object was raised further. Can be manufactured.

25 welding bead M, M1, M2 filler material W laminate model W1 first model W2 second model W1a, W2a main body W1b first ridge W2b second ridge WS joint

Claims (8)

A first shaped body formed by laminating a weld bead obtained by melting and solidifying a filler metal of a first metal material, and a weld bead obtained by melting and solidifying a filler metal of a second metal material different from the first metal material. A method for producing a layered object manufactured by joining a second modeled body obtained by laminating
A first model body main body modeling step of modeling the main body of the first model by laminating the welding beads of the first metal material;
A plurality of first protrusions made of the welding bead of the first metal material and a plurality of second protrusions made of the welding bead of the second metal material are formed on the main body of the first shaped body. And a joint forming step for forming a joint in which the first protrusions and the second protrusions are alternately arranged,
A second modeling body main body modeling step of modeling the main body of the second modeling body by laminating the welding bead of the second metal material on the joint;
Including
The welding bead of the first ridge is between the welding beads of the second ridge or between the welding bead of the second ridge and the main body of the second shaped body in the stacking direction. Sandwiched between the weld beads and
The weld bead of the second ridge portion is, in the stacking direction, between the weld beads of the first ridge portion or between the weld bead of the first ridge portion and the main body portion of the first shaped body. A method for producing a layered object sandwiched between the weld beads.   In the joint forming step, the weld bead of the first metal material and the second metal material of the second metal material are arranged such that the first protrusion and the second protrusion have different widths in the arrangement direction for each layer. The method for producing a layered object according to claim 1, wherein a weld bead is formed.   3. The protrusion length in the stacking direction of at least one of the first protrusions and the second protrusions is alternately different in the arrangement direction in the joint forming step. Manufacturing method of layered object.   In the joint forming step, the weld bead of the first metal material and the weld bead of the second metal material are formed so that the first protrusion is gradually widened in the stacking direction. The method for manufacturing a layered object according to any one of claims 1 to 3. A first shaped body formed by laminating a weld bead obtained by melting and solidifying a filler metal of a first metal material, and a weld bead obtained by melting and solidifying a filler metal of a second metal material different from the first metal material. A layered object manufactured by joining a second modeled body formed by laminating,
A body portion of the first modeled body that is modeled by laminating the welding beads of the first metal material;
A plurality of first protrusions made of the welding bead of the first metal material and a plurality of second protrusions made of the welding bead of the second metal material are formed on the main body of the first shaped body. And a joint portion formed by alternately arranging the first ridge portions and the second ridge portions;
A main body portion of the second shaped body that is shaped by laminating the weld bead of the second metal material on the joint portion;
Including
The welding bead of the first ridge is between the welding beads of the second ridge or between the welding bead of the second ridge and the main body of the second shaped body in the stacking direction. Sandwiched between the weld beads and
The weld bead of the second ridge portion is, in the stacking direction, between the weld beads of the first ridge portion or between the weld bead of the first ridge portion and the main body portion of the first shaped body. A layered object sandwiched between the weld beads.   The layered object according to claim 5, wherein the first protrusions and the second protrusions have different widths in the arrangement direction for each layer.   The layered object according to claim 5 or 6, wherein projecting lengths in the stacking direction of at least one of the first projecting ridges and the second projecting ridges are alternately different in the arrangement direction.   The layered object according to any one of claims 5 to 7, wherein the first protrusion is gradually widened in the stacking direction.

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