WO2015051679A1 - Metal wire for multi-filament cutting and apparatus for manufacturing same - Google Patents

Abstract

Disclosed is a metal wire for multi-filament cutting, with outer diameters of non-uniform distribution, the points of the largest outer diameter all making contact with an inner surface of a circular or nearly circular virtual channel, and the inner diameter of the virtual channel being consistent or evenly changing from front to back. The hardness of the surface of the metal wire is also of non-uniform distribution, and all the hardnesses on the points of the largest outer diameter of the metal wire are close to a local maximum value. When the metal wire is used for loose abrasive cutting, since the outer diameters of the metal wire are of non-uniform distribution, the abrasive carrying capacity is increased, which helps to improve cutting efficiency and cutting final yield, while since the hardness of the surface is also of non-uniform distribution, the wear-resistant capacity of the raised apex or near apex caused by the highest level hardness is high. The outer diameters of non-uniform distribution will not decrease due to the metal wire abrading during the cutting process, thus helping to maintain consistency in the final yield from the start of cutting to the tail end of cutting. Further disclosed is an apparatus for manufacturing the metal wire.

Description

 Description

 Metal wire for multi-wire cutting and manufacturing device thereof

 BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a wire for multi-wire cutting, and more particularly to a wire for multi-wire cutting of hard materials such as crystalline silicon, silicon carbide, sapphire, crystal, etc., and a manufacturing apparatus therefor. Background technique

The multi-wire cutting uses a wire as a carrier, and the wire carries a super-hard abrasive in a high-speed motion, and the high-hard material (such as crystalline silicon, silicon carbide, sapphire, crystal, etc.) is subjected to roll-cut grinding by the abrasive to realize cutting. This method has become the main production mode with the advantages of high cutting efficiency, small cutting kerf, less material loss, high cutting precision and good surface quality. Among them, the wire as the carrier carrying the abrasive, the stability during the cutting process and the ability to carry the abrasive, play an extremely important role in cutting efficiency and product quality. The currently widely used wire is a circular structure with a smooth surface (straight wire), which has the outstanding advantage that the wire can uniformly carry the abrasive in the direction around which it is cut and fed, thereby providing a stable cutting surface quality. In general, the surface area of the wire can be increased by increasing the diameter of the wire, thereby enhancing the ability of the wire to carry the abrasive to improve the cutting efficiency, at the expense of increasing the width of the kerf, resulting in material loss during the cutting process. Increase. The improvement of cutting efficiency can also be achieved by increasing the average particle size of the abrasive and the sharpness of the edges. At the same time as the multi-wire cutting was born, efforts to improve the abrasive carrying capacity of the wire ("saw wire") have begun and continue to this day, typically divided into three categories: The first is to try to make rough wire Increases the abrasive carrying capacity of the wire by increasing the roughness of the wire surface. For example, JP2007 196312 proposes to spray an electrolyte onto the surface of a wire. The method causes the surface of the wire to have irregularities; W0 9/12670 proposes the concept of a micro-cavity wire, a soft surface wire, and a wire whose cross-section changes along the length; KR 2001 002689 describes a circular saw The wire forms a cavity on the circular saw wire by embossing. Such attempts have not yet been successfully implemented and applied in the field of multi-wire cutting. The core reason is that the abrasive itself has a strong wear capacity. The surface of the wire treated as described above will be polished shortly after entering the cutting process. The surface treated wire no longer differs from the conventional round surface smooth wire.

The second type of attempt is based on the spiral treatment of the wire. For example, JP 2007 044841 proposes a substantially circular saw wire having a flat surface extending helically around the length of the saw wire, CN102380915A being essentially a natural extension of the above concept; US 2860862 is proposed to be pre-flattened The shape of the saw wire applies two helical deformations: first twisting the inner axis of the flat saw wire with a short lay length, and then twisting the saw wire with a longer lay length in a spiral shape. FR 750081 also describes spiral sawing wires with a circular or polygonal cross section. CN102205563A and CN102765141A are basically all natural extensions of the aforementioned ideas. JP 4057666 describes a metal saw wire, which is also twisted to make the straight wire into a spiral shape, and then stretched by a die. So far, the above efforts have not seen successful industrial implementation and application in the field of multi-wire cutting. The core reason is that the spiraling of the wire inevitably requires the twisting of the wire, thereby giving the metal ribbon a high twist. Internal stress, and the longer the wire, the higher the torsional internal stress, which leads to a strong self-winding tendency of the finished wire, which cannot be practically applied to multi-line cutting, which is prominent in the difficulty of completing a uniform long-distance winding take-up line. It is impossible or difficult to wire on the cutting line. Even if it is used for short-distance cutting, the wire will be irregularly shaken due to the high torsional internal stress carried by the wire itself, resulting in unacceptable cutting effect (exposed as surface line). Traces are bad with TTV). The third type of attempt is made by bending the wire in one or more planes. The so-called "structural wire". For example, JP 2004 276207 describes a single-wire or stranded wire having a spiral shape, and it is described that the single wire or stranded wire is guided through a pair of cogwheels to form a 'double-folded fold' in a single plane. In the zigzag fold, the saw wire is first bent in the first direction, then the second bend is made in the second direction and opposite to the first direction (reverse bend), and then the strand is twisted and twisted The zigzag folds of length are superimposed on the long wave spiral. A significant drawback of this type of attempt is that the stranded structure results in a significant increase in the outer diameter of the utility envelope of the saw wire, resulting in unacceptable kerf widening and corresponding additional material loss. A third type of attempt has achieved a certain application success. It is a monofilament type metal saw wire disclosed by Ansel Mittal through Chinese patent CN100475398C, which performs wire on two or more planes. The bending, thereby enhancing the ability of the wire to carry the abrasive to a certain extent, can achieve good results in some specific application environments. The disadvantage is that the bending of the saw wire is dominated by one plane, and the bending of other planes is gradually turned to the dominant plane during the cutting process, and finally a saw wire which is deformed substantially only in one plane is formed, thereby resulting in good cutting. The rate fluctuates. At the same time, due to the limited structural retention of the saw wire, in the case of a long cutting path, the bending structure has substantially or largely disappeared when the cutting line reaches the cutting end, resulting in a lower cutting yield than the cutting starting end. The yield has dropped significantly. In order to try to solve the above defects, Bekaert proposed a product concept equivalent to the second type ("spiral wire") and the third type ("structural wire") through CN102528940A. The basic principle is to be single. The wire is bent on the plane by means of a bite gear (or other deformation device), by twisting the wire (the plane around the axis of the wire is rotated to deform the device, or the plane of the deformation device is kept stationary but the same Rotate the receiving and unwinding shaft) to form a spiral wire, and then untwist the wire (rotate the plane of the deformation device opposite to the twisting direction, or keep the plane of the deforming device stationary but rotate in the same direction , release shaft) is partially or completely released due to twisting to the twisted wire of the wire Stress. During the implementation, it was found that the necessary wire retreat resulted in no improvement in the uniformity of the surrounding axis or the structural retention capability compared to the method provided by CN100475398C. Both CN102962901A and CN102310489A are natural extensions in the concepts of CN100475398C and CN102528940A, and no independent technical contributions have been made. In addition to the fluctuation in cutting yield due to the presence of the main deformation plane, and the limited retention of the structure, the cutting tail yield is significantly reduced compared to the cutting start. Another significant weakness of the above-mentioned structural wire is the outer diameter of the wire. Greater than the wire busbar, resulting in a widening of the kerf, resulting in an increase in material loss during the cutting process. In particular, the use of structural wire at the expense of kerf widening often does not result in an imaginary increase in cutting speed - because the speed of the multi-line cutting is due to the cutting speed at the cutting end: a) cutting At the beginning, the wire has not been worn, the wire diameter is the largest, and the ability to carry the abrasive itself is strong. At this time, the surface three-dimensional structure of the structural metal ribbon is more icing on the cake;

b) When the end of the cutting is reached, the wire is worn and the wire diameter becomes smaller (the wear of the wire at the cutting edge of the current industry is generally close to 10% when the wire reaches the cutting tail), resulting in a decrease in the abrasive carrying capacity. In the urgent need for the structural three-dimensional structure of the wire surface to transport carbon in the abrasive-carrying snow, the surface structure of the structural wire has often disappeared (especially in the case of long cutting paths). As the industry continues to reduce costs and increase efficiency, multi-line cutting is increasingly using longer workpieces (silicon rods, etc.), finer cutting wire (0. 08 let -0.115 let), resulting in The cutting path continues to lengthen, which further limits the scope of application of the above-mentioned conventional structural lines. Summary of the invention The technical problem to be solved by the present invention is: to solve the common defects common to the conventional linear wire and the conventional structural wire. The closer the cutting tail is, the worse the ability of the wire to carry the abrasive, and the more serious the cutting yield is lowered. . The technical solution adopted by the present invention to solve the technical problem thereof is: a wire for multi-wire cutting, a) a plurality of protrusions are regularly distributed on the outer surface, and the apex of the protrusion is the highest point of the outer surface of the wire ;

 b) the apex of the protrusion is in contact with a circular or approximately circular inner surface of the virtual pipe, and the inner diameter of the virtual pipe is uniformly or uniformly changed;

 c) the inner diameter of the dummy pipe is less than 1.05 times the diameter of the wire bus bar, and the wire bus bar refers to a raw material for preparing the wire for multi-wire cutting;

 d) The surface hardness of the wire is regularly distributed, and both reach a local maximum at the apex of the wire protrusion or near the apex of the protrusion.

 Due to the uneven distribution of the outer diameter of the wire, the abrasive carrying capacity is enhanced, which is beneficial to improve the cutting efficiency and the cutting yield. At the same time, the surface hardness is unevenly distributed, and the apex of the protrusion or the vicinity thereof is the highest in hardness and the wear resistance is the most. Strongly, the uneven distribution of the above outer diameter does not disappear because the metal wire wears along with the cutting process, thereby facilitating the maintenance of the yield uniformity from the cutting start end to the cutting end. The inner diameter of the dummy pipe is smaller than the diameter of the wire bus bar.

 Between the 0. 08-0. 60mm, the diameter of the wire for the multi-wire cutting is between 0.08-0. 60mm.

 The wire of the present invention is particularly suitable for multi-wire precision cutting which is sensitive to kerf loss. In this case, the diameter of the wire is generally preferably between 0.09 and 0.40 mm to minimize kerf loss.

In order to ensure that the abrasive carrying capacity is reasonably enhanced, the axis between the apex of adjacent wire projections The distance is not more than 500 times the inner diameter of the virtual pipe.

 In order to improve the abrasion resistance of the wire, the surface of the wire is coated with a coating mainly composed of a resin material. Due to the heterogeneous nature of the wire, the bond to the wire is much faster than the straight wire.

 In order to further improve the abrasion resistance of the wire, an inorganic filler is added to the resin material of the coating, and the inorganic filler includes diamond, silicon carbide, boron nitride, aluminum oxide, zirconium oxide, silicon nitride, carbonization. One or more of tungsten and graphite. Also due to the heterogeneous nature of the wire, the risk of shedding of the inorganic filler is significantly lower than that of the straight wire.

 The present invention relates to a wire for multi-wire cutting that can be used as an optimized bus for a fixed abrasive cutting line. In this case, the surface of the wire is compounded with a fixed cutting abrasive, and the fixed cutting abrasive comprises one or more of diamond, silicon carbide, boron nitride, aluminum oxide, zirconium oxide, silicon nitride or tungsten carbide. Hard material. Fixed cutting abrasives have an average particle diameter between 5 μm and 100 μm.

 The above-mentioned apparatus for manufacturing a wire for multi-wire cutting, the device comprising at least a wire reel, a pre-deformation mechanism for plastically deforming the wire bus bar, and a deformation strengthening mechanism for deforming the pre-deformed wire, The pulling drive wheel, the wire tensioning tensioning system and the wire take-up device for pulling the wire through the heterogeneous forming mechanism to provide sufficient drawing tension; the deformation strengthening mechanism is a cylindrical deformation drawing die, the cylindrical deformation The drawing die comprises at least a deformed tapered inlet and a cylindrical deformed sizing belt, and the inner diameter of the deformed tapered inlet is gradually reduced from the outside to the inside, and the inner diameter of the deformed sizing belt is consistent with the minimum inner diameter of the deformed tapered inlet, and the strain is fixed. 05倍。 The inner diameter of the wire is less than 1. 05 times the diameter of the wire.

 The pre-deformation mechanism includes an initial pre-deformation mechanism that deforms the wire busbar in one or more planes.

The pre-deformation mechanism further includes a heterogeneous molding mechanism that plastically deforms the wire after the initial pre-deformation mechanism in the advancing direction of the wire and the direction of advancing. A method of manufacturing the wire manufacturing apparatus described above, comprising the following steps:

 a) pre-deformation: passing the straight wire busbar through the reel, and then entering the pre-deformation mechanism to perform pre-deformation processing of the wire at least once to process the pre-deformed wire containing plastic deformation;

 b) deformation strengthening: pulling the driving wheel to pull the pre-deformed wire through the deformation strengthening mechanism, forming a wire with the invention by deforming the sizing belt;

 c) Take-up: The wire is wound up through the wire tensioning system and the wire-receiving device. The invention has the beneficial effects that the abrasive carrying capacity is enhanced due to the uneven distribution of the outer diameter of the wire, which is advantageous for improving the cutting efficiency and the cutting yield, and at the same time, due to the uneven distribution of the surface hardness, and the apex of the protrusion or the vicinity thereof The highest hardness and the strongest wear resistance, the uneven distribution of the above outer diameter will not disappear because the metal wire wears along with the cutting process, thereby facilitating the maintenance of the yield consistency from the cutting start end to the cutting end.

DRAWINGS

 The invention will now be further described with reference to the drawings and embodiments. Figure 1 is a schematic view showing the structure of a wire bus bar before pre-deformation.

Figure la is an axial view of the wire axis X of Figure 1. Figure lb is an axial view of the wire axis Y of Figure 1. Figure lc is an axial view of the wire axis Z of Figure 1, with black circles indicating the axis of the wire itself. Fig. 2 is a perspective view showing the structure of a pre-deformed wire in the first embodiment of the present invention. Figure 2a is an axial view of the wire axis X of Figure 2. Figure 2b is an axial view of the wire axis Y of Figure 2. Fig. 2c is an axial view of the axis Z of the wire of Fig. 2, the middle line of the figure being formed by projecting the axis of the wire itself.

 Fig. 3 is a perspective view showing the structure of the pre-deformed wire in the embodiment 2 of the present invention. Figure 3a is an axial view of the wire axis X of Figure 3.

 Figure 3b is an axial view of the wire axis Y of Figure 3. Figure 3c is an axial view of the wire axis Z of Figure 3, in which the center-like twisted line pattern is formed by the projection of the wire itself.

 4 is a structural schematic view of the metal ribbon of FIG. 3 having an axial projection surface and a normal plane. Fig. 5 is a view showing the configuration of a wire manufacturing apparatus in the first embodiment of the present invention.

 Fig. 6 is a view showing the configuration of a wire manufacturing apparatus in a second embodiment of the present invention. Figure 7 is a schematic view showing the structure of a wire manufacturing apparatus in Embodiment 3 of the present invention.

 Fig. 8 is a view showing the structure of a cylindrical forming drawing die in the apparatus for producing a wire according to the present invention.

 Fig. 9 is a view showing the structure of a cylindrical deformation drawing die in the apparatus for manufacturing a wire according to the present invention.

 Figure 10 is a schematic view showing one of the structures of the finally prepared wire of the present invention.

In the figure: la, pre-deformed wire, lb, finally prepared wire, 100, protrusion, 11, plastic deformation, 2, over-wheel, 3. pre-deformation mechanism, 31, initial pre-deformation mechanism 32, Heterogeneous molding mechanism, 321, Forming tapered inlet, 322, Forming and sizing belt, 4. Deformation strengthening mechanism, 41, Deformation taper inlet, 42, Deformation and sizing belt, 5. Converging constant tension system, 6. Wire take-up device, 72, pull drive wheel, I, axial projection surface, II, normal plane, d, diameter of the wire before deformation strengthening. detailed description

 The invention will now be described in detail with reference to the drawings. The drawings are simplified schematic diagrams, and only the basic structure of the invention is illustrated in a schematic manner, and thus only the configurations related to the present invention are shown.

 A wire for multi-wire cutting of the present invention is shown in Figure 10:

 a) the outer surface is regularly distributed with a plurality of protrusions 100, the apex of the protrusions 100 being the highest point of the outer surface of the wire;

 b) the apex of the protrusion 100 is in contact with a circular or approximately circular inner surface of the virtual pipe, and the inner diameter of the virtual pipe is uniformly or uniformly changed;

 c) the inner diameter of the dummy pipe is less than 1.05 times the diameter of the wire bus bar, and the wire bus bar refers to a raw material for preparing the wire lb for multi-wire cutting;

 d) The surface hardness of the wire is regularly distributed, and both reach a local maximum at the apex of the wire protrusion 100 or near the apex of the protrusion 100.

 The axial distance between the apexes of adjacent wire projections 100 is no more than 500 times the inner diameter of the virtual pipe.

 The present invention relates to a wire for multi-wire cutting that can be used as an optimized bus for a fixed abrasive cutting line. In this case, the surface of the wire is compounded with a fixed cutting abrasive, and the fixed cutting abrasive comprises one or more of diamond, silicon carbide, boron nitride, aluminum oxide, zirconium oxide, silicon nitride or tungsten carbide. Hard material. Fixed cutting abrasives have an average particle diameter between 5 μm and 100 μm.

The apparatus for manufacturing a wire for multi-wire cutting according to the present invention includes at least a reel 2, a pre-deformation mechanism 3 that plastically deforms a wire bus bar, and a deformation strengthening mechanism 4 that deforms the pre-deformed wire. The pulling drive wheel 72, the wire-retracting constant tension system 5 and the wire take-up device 6 for pulling the wire through the heterogeneous molding mechanism to provide sufficient drawing tension; the deformation strengthening mechanism 4 is a cylindrical deformation drawing die, The cylindrical deformation drawing die comprises at least a deformed tapered inlet 41 and a cylindrical deformed sizing belt 42. The inner diameter of the deformed tapered inlet 41 is gradually reduced from the outside to the inside, and the inner diameter of the deformed sizing belt 42 and the deformation cone are formed. 5倍。 The inner diameter of the diameter of the wire is less than 1. 05 times.

 The method for producing a wire for multi-wire cutting of the present invention comprises the following steps:

 a) pre-deformation: passing the straight wire busbar through the reel 2, and then entering the pre-deformation mechanism 3 to perform pre-deformation processing of the wire at least once, and processing a pre-deformed wire containing plastic deformation;

 b) deformation strengthening: pulling the driving wheel 72 pulls the pre-deformed wire through the deformation strengthening mechanism 4, and forming the wire with the invention by deforming the sizing belt 42;

 c) Take-up: The wire is passed through the wire-retracting constant tension system in turn, and the wire-receiving device 6 is wound to take the wire. Example 1

 5 is a manufacturing apparatus of a wire according to the present embodiment, comprising a rewinding wheel 2 provided in order, a pre-deformation mechanism 3 for performing plastic unevenness deformation in one plane of a wire bus bar, and a pre-deformed wire la The deformation-enhancing deformation strengthening mechanism 4 is a drawing driving wheel 72 for pulling the wire through the deformation strengthening mechanism to provide sufficient drawing tension, a wire-retracting constant tension system 5, and a wire take-up device 6; the deformation strengthening mechanism 4 is a cylindrical shape Deformation drawing die, as shown in FIG. 9, the cylindrical deformation drawing die includes a deformation tapered inlet 41 and a cylindrical deformation sizing belt 42, and the inner diameter of the deformed tapered inlet 41 is gradually reduced from the outside to the inside. 081毫米。 The inner diameter of the deformed sizing belt is 0. 081mm. The inner diameter of the deformed sizing belt is 0. 081mm.

 The method for manufacturing a wire manufacturing apparatus of the present embodiment includes the following steps:

 a) Pre-deformation: 0. 09mm straight wire busbar passes through the reel 2, and then enters the pre-deformation mechanism 3 to perform pre-deformation processing of the wire, and processes the pre-deformed wire la in a plane; the wire busbar The structure is shown in Figure 1, Figure la, Figure lb and Figure lc;

b) deformation strengthening: pulling the driving wheel 72 to pull the pre-deformed wire la through the deformation strengthening mechanism 4. After forming the sizing belt, a wire having a virtual pipe inner diameter of 0.081 mm is formed, and the structure of the wire is as shown in FIG. 10;

 c) Take-up: The wire will be passed through the wire-retracting constant tension system in turn, and the wire-receiving device 6 will be wound up.

 2, 2a, 2b and 2c are schematic views showing the structure of the straight metal bus bar in the present embodiment after passing through the pre-deformation mechanism 3. The deformation method of the pre-deformation mechanism 3 of this embodiment is as follows:

 The straight wire passes through the reel 2 in turn, and then enters the pre-deformation mechanism 3 to perform a pre-deformation process of the wire to process the wire la deformed in one plane, that is, the pre-deformation mechanism 3 includes only the initial pre-deformation mechanism 31. The wire la formed by the initial pre-deformation mechanism 31 has a plastic deformation portion 11, and as shown in Fig. 2, the plastic deformation portion 11 has a symmetrical uniform wave shape, and the outer diameter of the wire la is larger than the inner diameter of the deformation sizing tape 42. 01毫米。 In this embodiment is 0. 13mm.

 The wire structure of the present invention includes various conditions for forming protrusions along the wire axis and/or the surrounding axis, and the protrusions may be evenly distributed or non-uniformly distributed.

 Example 2

 6 is a manufacturing apparatus of the wire according to the embodiment. Unlike the first embodiment, the pre-deformation mechanism 3 includes an initial pre-deformation mechanism 31 that deforms the wire bus bar in one plane or a plurality of planes, and further includes The heterogeneous molding mechanism 32 that plastically deforms the wire that has passed through the initial pre-deformation mechanism 31 in the advancing direction of the wire and the direction of advancing in the same direction.

 As shown in FIG. 8, the heterogeneous molding mechanism 32 is a cylindrical forming drawing die, and the cylindrical forming drawing die includes at least a shaped tapered inlet 321 and a cylindrical shaped sizing tape 322, and the inner diameter of the shaped tapered inlet 321 is The outer diameter is gradually reduced, and the inner diameter of the molded sizing belt 322 coincides with the minimum inner diameter of the shaped tapered inlet 321 .

The manufacturing method of the present embodiment is different from that of the first embodiment in that after the initial pre-deformation mechanism 31 is deformed, the heterogeneous molding mechanism 32 is also passed, and the pulling drive wheel 72 pulls the wire through the heterogeneous molding mechanism. 32. Due to the angle between the plurality of axes of rotation of the wire before the pre-deformation, and the constant tension of the wire reel 2 which continuously changes the direction of advancement of the wire, the deformed wire is in the advancing direction and surrounding The advancing direction encounters plastic deformation at the same time, and the corrugated plastic deformation portion of the unevenly deformed wire is twisted to form the wire la with the plastic deformation portion 11 as shown in FIG.

 Example 3

 7 is a manufacturing apparatus of a wire according to the present embodiment, which is different from the first embodiment in that the pre-deformation mechanism 3 includes only the initial pre-deformation mechanism 31, and a mechanism for performing uneven deformation on two planes of the wire bus bar, The two planes are perpendicular to each other. Accordingly, the manufacturing method of the present embodiment is different from that of Embodiment 1 in the process of pre-deformation.

 In view of the above-described embodiments of the present invention, various changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and the technical scope thereof must be determined in accordance with the scope of the claims.

Claims

claims 1. A metal wire used for multi-wire cutting, characterized by: a) There are several protrusions (100) regularly distributed on the outer surface, and the apex of the protrusions (100) is the highest point on the outer surface of the metal wire; b) The apex of the protrusion (100) is in contact with the inner surface of a circular or approximately circular virtual pipe, and the inner diameter of the virtual pipe changes consistently or evenly; c) The inner diameter of the virtual pipe is less than 1.05 times the diameter of the metal wire busbar, which refers to the raw material for preparing the metal wire (lb) used for multi-wire cutting; d) The surface hardness of the metal wire changes regularly and reaches a local maximum at the vertex of the metal wire protrusion (100) or near the vertex of the protrusion (100). 2. The metal wire for multi-wire cutting according to claim 1, characterized in that: the inner diameter of the virtual pipe is smaller than the diameter of the metal wire bus bar. 3. The metal wire for multi-wire cutting according to claim 2, characterized in that: the diameter of the metal wire (lb) for multi-wire cutting is between 0.08-0.60mm. 4. The metal wire used for multi-wire cutting according to claim 3, characterized in that: the diameter of the metal wire (lb) used for multi-wire cutting is between 0.09-0.40mm. 5. The metal wire for multi-wire cutting according to any one of claims 1 to 4, characterized in that: the axial distance between the vertices of adjacent metal wire protrusions (100) is not greater than the virtual pipe 500 times the inner diameter. 6. The metal wire for multi-wire cutting according to claim 1, characterized in that: the surface of the metal wire is compounded with fixed cutting abrasives, and the fixed cutting abrasives include diamond, silicon carbide, boron nitride, and aluminum oxide. , zirconia, silicon nitride or tungsten carbide, one or more hard materials, the average particle diameter of the fixed cutting abrasive is between 5 μm and 100 μm. 7. A manufacturing device for metal wire for multi-wire cutting according to any one of claims 1 to 6, characterized in that it includes at least a wire passing wheel (2), a pre-processor for plastically deforming the metal wire busbar. Deformation mechanism (3), The deformation strengthening mechanism (4) that performs deformation strengthening on the pre-deformed metal wire, the drawing driving wheel (72) that provides sufficient drawing tension for pulling the metal wire through the heterogeneous forming mechanism, the take-up constant tension system (5) and the take-up Line device (6); the deformation strengthening mechanism (4) is a cylindrical deformation drawing die, and the cylindrical deformation drawing die at least includes a deformation tapered inlet (41) and a cylindrical deformation sizing belt ( 42), the inner diameter of the deformation tapered inlet (41) gradually decreases from outside to inside, the inner diameter of the deformation sizing zone (42) is consistent with the minimum inner diameter of the deformation tapered inlet (41), and the inner diameter of the deformation sizing zone (42) is smaller than 1. 05 times the diameter of the metal wire busbar. 8. The manufacturing device of metal wire for multi-wire cutting according to claim 7, characterized in that: the pre-deformation mechanism (3) includes an initial pre-deformation mechanism for deforming the metal wire bus bar in one plane or multiple planes. Deformation mechanism (31). 9. The manufacturing device of metal wire for multi-wire cutting according to claim 8, characterized in that: the pre-deformation mechanism (3) also includes an initial step in the advancing direction and the circumferential advancing direction of the metal wire. The metal wire after the pre-deformation mechanism (31) is plastically deformed by a heterogeneous forming mechanism (32).