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Double-sheet spot welding hot stamping method and welding structure thereof

A technology of hot stamping and blanks, applied in auxiliary devices, welding equipment, auxiliary welding equipment, etc., can solve problems such as complex procedures, high production costs, and impact on automobile quality and safety

Inactive Publication Date: 2010-10-20
上海赛科利汽车模具技术应用有限公司
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  • Description
  • Claims
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Problems solved by technology

When this method is used for hot press forming, it is necessary to set up a mold for each sheet for hot stamping, the process is complicated, the production cost is high, and the matching relationship of the parts after welding is not very reliable, which may affect the car quality and safety

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  • Double-sheet spot welding hot stamping method and welding structure thereof
  • Double-sheet spot welding hot stamping method and welding structure thereof
  • Double-sheet spot welding hot stamping method and welding structure thereof

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] The double sheet spot welding hot stamping method includes the following steps: first, two sheets of the same material are welded together, and the welded structure is as follows: figure 1 , 2 As shown, it includes a small blank 2 and a large blank 1. The external contour shape of the two blanks is calculated according to the state of the part after molding, and is realized by blanking die or laser cutting in advance. The two blanks The sheets are made of the same grade of high-strength steel. The welding structure also includes a workbench 3 on which several first support columns 7 and several second support columns 6 are arranged. The small piece 2 is placed on the first support column 7, and several first positioning blocks 5 are arranged around the small piece 2, and the first positioning blocks 5 block the small piece 2, there...

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Abstract

The invention discloses a double-sheet spot welding hot stamping method, which comprises the following steps: firstly, welding two sheets made of the same material together to enable the two sheets to be completely attached; secondly, heating two welded sheets to be over 900DEG C to enable the two sheets to form an austenite structure; and finally placing the two heated sheets in the same die for hot stamping to form a part and carrying out pressure maintaining and cooling on the formed part in the die to enable the part to become the austenite structure. For the double-sheet spot welding hot stamping method, the two sheets are welded before hot stamping and the two welded sheets are subject to hot stamping in only one die, thereby saving a stamping die, reducing operation steps and reducing the production cost.

Description

technical field [0001] The invention belongs to the field of automobile parts manufacturing, and in particular relates to a hot stamping forming method of an ultra-high-strength steel part and a welding structure thereof. Background technique [0002] Hot stamping technology has been widely used in the production and processing of auto parts. Hot stamping forming technology generally heats the steel plate to a certain temperature (above 900°C) to make it into an austenite structure, stamps it when the steel plate is still ductile, and cools the mold with water to ensure that the plate Martensitic structure obtained after quenching. The main advantage of the steel sheet processed by hot stamping technology is its high tensile strength. Auto parts processed by hot stamping technology have a tensile strength of up to 1500Mpa, which greatly improves the safety of auto parts and can effectively reduce the weight of the car body. [0003] The existing hot stamping process for a...

Claims

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Application Information

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IPC IPC(8): B23P17/00B23K37/04B23K37/053
Inventor 许红平刘福强
Owner 上海赛科利汽车模具技术应用有限公司
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