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Hot stamping high strength steel automobile body covering part and manufacturing method and system thereof

A technology of automobile body and manufacturing method, which is applied to vehicle parts, transportation and packaging, etc., which can solve the problems that the performance is difficult to meet the demand, and achieve the effect of excellent mechanical performance, beautiful appearance and light weight

Inactive Publication Date: 2019-03-08
SUZHOU PRESSLER ADVANCED FORMING TECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the automobile outer covering parts are electroplated, sprayed with primer, middle paint and top paint to completely cover up the original metal texture. Due to the light weight, anti-dent ability and appearance requirements of the automobile, the performance of conventional automobile body outer covering parts is getting better and better. more difficult to meet demand

Method used

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  • Hot stamping high strength steel automobile body covering part and manufacturing method and system thereof
  • Hot stamping high strength steel automobile body covering part and manufacturing method and system thereof
  • Hot stamping high strength steel automobile body covering part and manufacturing method and system thereof

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Embodiment 1

[0040] The part that the present embodiment needs to prepare is integral type car door panel 100, and structure is as follows Figure 1-2 shown.

[0041] First, a 3Cr13 martensitic stainless steel plate with a thickness of 0.55mm and cold-rolled, annealed and pickled, with a martensitic transformation temperature of 230°C, contains C: 0.32%, Si: 0.3%, Mn: 0.3%, Cr: 13%, Ni: 0.6%;

[0042] Then, put the cut sheet into the heating furnace to heat to 1050°C and keep it warm for 1min;

[0043] Then, put the sheet into the mold for pressing, the time for the sheet to be transferred from the heating furnace to the mold after heating is 6s, the time for the sheet to be placed in the mold to the start of pressing is 1s, and the time from the start of the mold to the end of the mold is 1s;

[0044] Then, the pressed sheet is kept in the mold for 6 seconds, and it is taken out from the mold when the sheet is cooled to close to room temperature and the material structure is transforme...

Embodiment 2

[0049] The parts required to be prepared in this embodiment are also an integral car door panel 100, with a structure such as Figure 1-2 shown.

[0050] First, a martensitic stainless steel plate with a thickness of 0.5mm and cold-rolled, annealed and pickled, with a martensitic transformation temperature of 280°C, contains C: 0.06%, Si: 0.3%, Mn: 1.1%, Cr : 12%, Ni: 0.6%, Nb: 0.5%,;

[0051] Then, put the cut sheet into the heating furnace to heat to 1050°C and keep it warm for 1min;

[0052] Next, put the sheet into the mold of the press for pressing. The time for the sheet to be transferred from the heating furnace to the mold after heating is 6 seconds. The time to the end is 1s;

[0053] Then, the pressed sheet is kept in the mold for 6 seconds, and it is taken out from the mold when the sheet cools close to room temperature;

[0054] Then, use laser heating to heat the flanging area, and then carry out edge-wrapping and pressing with the inner cover. The schematic d...

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Abstract

The invention discloses a hot stamping high strength steel automobile body covering part and a manufacturing method and system thereof. The manufacturing method includes the steps that a martensitic stainless steel plate is cut, and the martensitic stainless steel plate is in a cold rolling annealing pickling state; a cut sheet material is put in a heating unit and heated to an austenitic state for heat preservation; the heated sheet material is placed into a mould of a press for compression moulding; and the compressed sheet material is maintained the pressure and cooled in the mould, when the material structure of the sheet material is transformed into martensite, the surface treatment is conducted finally after being removed from the mould. According to the hot stamping high strength steel automobile body covering part and the manufacturing method and system thereof, a martensitic stainless steel material is adopted, the outer covering part of an automobile body is obtained by hot stamping forming, the elasticity is excellent due to the high yield strength, more impact energy of foreign objects can be absorbed, excellent pit resistant performance is achieved, and the thickness of workpieces can further be reduced; and since stainless steel has good corrosion resistance, the surface of the material and the automobile outer covering part are not required to be galvanized.

Description

technical field [0001] The invention relates to the field of automobile manufacturing, in particular to a hot-stamped high-strength steel automobile body cover and its manufacturing method and manufacturing system. Background technique [0002] In the current automotive body outer panel products, the vast majority use carbon steel with deep drawing properties, or low alloy steel with bake hardening properties or cold rolled steel with galvanized coating. The cover forming manufacturing process is also a traditional cold stamping process. The thickness of most car body outer covering parts is about 0.65-0.8mm, and the tensile strength is generally between 300MPa-400MPa. Due to the performance requirements of the outer covering of the vehicle body, the covering is required to have a certain ability to resist dents. Moreover, the automobile outer covering parts are electroplated, sprayed with primer, middle paint and top paint to completely cover up the original metal texture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D53/88B23P15/00C22C38/02C22C38/04C22C38/08C22C38/18C22C38/22C22C38/24C22C38/26C22C38/40C22C38/44C22C38/46C22C38/48
Inventor 安健陈汉杰李东成
Owner SUZHOU PRESSLER ADVANCED FORMING TECHNOLOGIES CO LTD
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