US20180178265A1 - Hot stamping system for production of a parts assembly - Google Patents
Hot stamping system for production of a parts assembly Download PDFInfo
- Publication number
- US20180178265A1 US20180178265A1 US15/604,266 US201715604266A US2018178265A1 US 20180178265 A1 US20180178265 A1 US 20180178265A1 US 201715604266 A US201715604266 A US 201715604266A US 2018178265 A1 US2018178265 A1 US 2018178265A1
- Authority
- US
- United States
- Prior art keywords
- production
- parts
- hot stamping
- hot
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 4
- 238000005496 tempering Methods 0.000 description 3
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
Definitions
- This patent relating to the manufacturing industry, in particular the automotive industry, is for a hot-stamping system of automotive parts which enables the production of a set of parts known as body in white or closures, which form the body of a car in a single production plant, thus reducing costs and manpower.
- the hot forming technique has been successful in manufacturing parts with complex shapes and higher mechanical strength.
- This technique takes advantage of both the good formability resulting from the higher deformation temperatures reached and the transformations undergoing by the austenite during cooling of the parts.
- This promoted by the use of temperable plates of smaller thickness, contributes to reducing the vehicle weight, also decreasing the fuel consumption in automobiles.
- the process of hot forming is relatively simple. First the blanks are cut from coils of low carbon steel microalloyed to boron, then introduced into a continuous furnace (with an average length of 40-60 m) for austenitization between 850 and 950° C. The steel surface is protected against the rapid oxidation that occurs under these high temperatures. In this case, the most common alternative is to coat the surface with an AlSi layer, but it is occasionally possible to do without this coating and use the protective atmosphere inside the furnace.
- the blank After a warm-up period of four to ten minutes, the blank is sent to the stamping press where it is formed and where, also, the tempering of the sheet occurs immediately inside the water-cooled matrix. After a cooling period, lasting between 15 and 25 seconds, the tempering is complete, occasional burrs on the part are removed and it is extracted from the matrix at a temperature of about 150° C. The subsequent cooling of the part is done in contact with the air, with a tempering effect.
- Hot stamping is not an exactly novel process, as it was originally developed in Sweden in 1973, just in the year in which the first major challenges for the auto industry arose because of rampant increases in oil prices.
- its industrial application was limited until the beginning of the new millennium, when its acceptance increased exponentially.
- Hot stamping is mainly used for the production of anti-intrusion components and structural reinforcements for passenger cars, whose characteristics such as a relatively large size, complex shape and high levels of mechanical strength make it difficult to use cold stamped AHSS steels.
- the hot stamping process was also successful in the USA: in 2004, 33 hot-stamped bumper versions were compiled in the country for various models at several automobile assemblers, such as Volkswagen, General Motors, Citröen, Ford and Smart.
- the main steels used were SAE 10B21 and 15B21, in the form of blanks with thicknesses between 1.50 and 3.50 mm.
- the average values of the typical post hardening properties were: 1,140 MPa yield limit; 1,520 MPa resistance limit; 12% total elongation and 479 HV hardness.
- 22Mn B5 steel is widely used.
- the most critical step in defining the mechanical properties of the finished part is quenching, which is usually done within the water-cooled matrix. Therefore, the chemical composition of the steel to be used is defined according to the final mechanical properties required, the thickness of the workpiece and the cooling rates obtained during quenching in the matrix, guaranteeing an adequate level of temperability.
- the best alloy designs for hot stamping steels have a carbon content of about 0.20% and relatively high manganese contents.
- the hot stamping is the only process way that allows manufacturing components with complex shapes and high mechanical strength.
- the steel austenitization besides facilitating the formation process due to the lower mechanical resistance and greater ductility of the material under processing, also allows to take advantage of the phenomena resulting from the further metallurgical transformation to obtain profiles with mechanical properties that allow to reduce the weight of the parts and to increase their performance.
- This invention seeks to improve the production of stamped parts used in the automotive industry, features a hot stamping system that allows to stamp the whole set of parts (“body in white”, “car body” or “closures”) that forms the body of a car in a single industrial plant. It is a production system that uses a hot forming process and specific Joule heating equipment (whose patent applications were filed by the same inventor at this institute), a stamping system that aims at reducing the weight of vehicles, optimizing energy efficiency, and increasing vehicle safety due to the possibility of using steels with high mechanical strength.
- This system replaces the conventional furnace by the heating equipment, promoting a considerable reduction in the spatial occupation ratio of the conventional installation area (from 1,800 m 2 to 300 m 2 ).
- the costly maintenance of the furnace is eliminated, making possible the intermittent stamping of parts without the need of soaking, a high costs factor in the use of conventional furnaces, especially in continuous production, because it is necessary to use high soaking temperatures; therefore, energy consumption and equipment deterioration in heating the furnace atmosphere are greater.
- This system further allows the use of steels with hot and electrolytic galvanizing metal coatings (Zn, ZnFe, ZnNi, among others produced in their respective coating processes) through the process mentioned above, whereas in the conventional process steel with AlSi metallic layer coatings are used. Furthermore, the conventional process produces a superficial layer in the parts that allows the presence of micro cracks, which are minimized in the process used in the system presented.
- FIG. 1 is a flowchart of the production process, showing the operating phases of production.
- FIG. 2 is an illustration of the production unit showing the equipment involved in the stamping.
- the object of this patent relates to a hot forming system for the production of the set of fixed and movable parts (“body in white”, “body car” or “closures”) that form the body of the automobile, stamped in a single production unit ( 1 ).
- This system consists of two groups ( 2 and 3 ) of equipment, one group ( 2 ) for the fixed parts and another group ( 3 ) for the moving parts.
- Said groups ( 2 and 3 ) each are composed by production units ( 4 ) (as many as necessary for production of the assembly) which are supplied ( 5 ) with blanks, previously cut individually into the required dimensions ( 5 ), after being inspected ( 6 ), rendered in conditions of entry into the stamping tool (matrix) in accordance with the shape and dimensions of the part to be made in the respective production unit ( 4 ), and are distributed ( 7 ) both to the group ( 2 ) of fixed parts and to the group ( 3 ) of moving parts.
- the production units ( 4 ), one for each part specification to be produced, are composed of a blank feed rack ( 8 ), two handling robots ( 9 and 11 ) and a stamping unit formed by a Joule heating device ( 10 ) and a press ( 12 ) with the tool (matrix) relative to the part to be stamped.
- the first robot ( 9 ) feeds the heating device ( 10 ) by withdrawing the blank from the feed rack ( 8 ) and arranging it in the heating device ( 10 ).
- this robot ( 9 ) removes the heated part and feeds the tool on the press ( 12 ) for form and shape as determined.
- the second robot ( 11 ) removes the shaped part from the press ( 12 ) and places it on a storage rack ( 13 ).
- the movement of both hot and cold parts can be performed both by robotic arms and by dedicated conveying transfer systems designed specifically for the applications and, in the case of hot part moving, constructed of material that supports temperature and radiation from the plate, without being damaged.
- the heating takes place by the electric conduction process (Joule heating), which can reach heating rates of up to 400° C./sec. Its arrangement close to the press ( 12 ) occupies an area slightly larger than the part to be heated, thus obtaining a greater utilization of the area available for each of the production units ( 4 ).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automatic Assembly (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Heat Treatment Of Articles (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR102016030406A BR102016030406A2 (pt) | 2016-12-23 | 2016-12-23 | sistema de estampagem a quente para produção de um conjunto de peças |
| BR102016030406-7 | 2016-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20180178265A1 true US20180178265A1 (en) | 2018-06-28 |
Family
ID=58277169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US15/604,266 Abandoned US20180178265A1 (en) | 2016-12-23 | 2017-05-24 | Hot stamping system for production of a parts assembly |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20180178265A1 (ja) |
| EP (1) | EP3339454A1 (ja) |
| JP (1) | JP2018103261A (ja) |
| AR (1) | AR108555A1 (ja) |
| AU (1) | AU2017201970A1 (ja) |
| BR (1) | BR102016030406A2 (ja) |
| CO (1) | CO2017005540A1 (ja) |
| MX (1) | MX2017006490A (ja) |
| UY (1) | UY37248A (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102718852B1 (ko) * | 2022-07-28 | 2024-10-16 | 손영복 | 연속가공이 가능한 앵커 제조 장치 |
| CN118218468B (zh) * | 2024-05-22 | 2024-08-13 | 杭州天翔机电有限公司 | 一种金属零件的冲压成型设备 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170027443A1 (en) * | 2015-07-30 | 2017-02-02 | Canon Kabushiki Kaisha | Image pickup apparatus and method of controlling image pickup apparatus |
| WO2017071294A1 (zh) * | 2015-10-29 | 2017-05-04 | 武汉理工大学 | 一种多工位连续热冲压生产线及方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858582C2 (de) * | 1998-12-18 | 2001-05-17 | Karl Heess Gmbh & Co Maschb | Anlage zum thermischen Behandeln von metallischen Werkstücken |
| US7503116B2 (en) * | 2004-01-20 | 2009-03-17 | Noble Advanced Technologies, Inc. | Continuous process for producing a shaped steel member |
| CN102458709B (zh) * | 2009-06-09 | 2014-07-30 | 夏伊洛工业公司 | 用于制造金属零件的机构、系统和方法 |
| US9308564B2 (en) * | 2012-11-28 | 2016-04-12 | Magna International Inc. | Hot stamping system and method |
-
2016
- 2016-12-23 BR BR102016030406A patent/BR102016030406A2/pt not_active Application Discontinuation
-
2017
- 2017-03-09 EP EP17160043.0A patent/EP3339454A1/en not_active Withdrawn
- 2017-03-23 AU AU2017201970A patent/AU2017201970A1/en not_active Abandoned
- 2017-05-17 MX MX2017006490A patent/MX2017006490A/es unknown
- 2017-05-18 UY UY0001037248A patent/UY37248A/es not_active Application Discontinuation
- 2017-05-23 AR ARP170101385A patent/AR108555A1/es unknown
- 2017-05-24 US US15/604,266 patent/US20180178265A1/en not_active Abandoned
- 2017-06-02 CO CONC2017/0005540A patent/CO2017005540A1/es unknown
- 2017-06-30 JP JP2017128261A patent/JP2018103261A/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170027443A1 (en) * | 2015-07-30 | 2017-02-02 | Canon Kabushiki Kaisha | Image pickup apparatus and method of controlling image pickup apparatus |
| WO2017071294A1 (zh) * | 2015-10-29 | 2017-05-04 | 武汉理工大学 | 一种多工位连续热冲压生产线及方法 |
| US20180071806A1 (en) * | 2015-10-29 | 2018-03-15 | Wuhan University Of Technology | Multi-station continuous hot stamping production line and method |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017201970A1 (en) | 2018-07-12 |
| EP3339454A1 (en) | 2018-06-27 |
| AR108555A1 (es) | 2018-08-29 |
| CO2017005540A1 (es) | 2017-08-18 |
| JP2018103261A (ja) | 2018-07-05 |
| MX2017006490A (es) | 2018-08-28 |
| UY37248A (es) | 2018-07-31 |
| BR102016030406A2 (pt) | 2018-07-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: AETHRA SISTEMAS AUTOMOTIVOS S/A, BRAZIL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SPORTELLI, PIETRO;REEL/FRAME:042645/0501 Effective date: 20170308 |
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Free format text: FINAL REJECTION MAILED |
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| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |