Automobile door ring manufacturing technology

A manufacturing process and door knocker technology, which is applied in the field of automobile door knocker manufacturing process, can solve the problems of poor anti-corrosion ability of the weld seam and reduce product strength, etc., and achieve the effect of improving welding strength and corrosion resistance, reducing processing costs and reducing procedures

Pending Publication Date: 2021-11-19
凌云吉恩斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the coating and transition layer on the sheet are removed before welding, the weld position of this process has poor anticorrosion ability, and it is easy to reduce the product strength after long-term use or in a humid environment

Method used

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  • Automobile door ring manufacturing technology
  • Automobile door ring manufacturing technology
  • Automobile door ring manufacturing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Please refer to figure 1 and figure 2 , a kind of automobile door knocker manufacturing process, comprises the following steps:

[0035] Welding: According to the composition of the door knocker, obtain the required size of the panels, wherein the door knocker includes A-pillar panel 1, B-pillar panel 2, threshold panel 3 and H-pillar panel 4. The joint width is 16mm-60mm, and resistance spot welding or laser spot welding is performed on the overlapping position to form solder joints 5 at the overlapping position;

[0036] According to the thickness of the sheet metal and the number of solder joints, select an appropriate lap width. When the lap width is less than 16 mm, the weldable area of ​​the solder joint 5 is limited, and insufficient welding strength is prone to occur, resulting in hidden safety and quality risks for the door knocker; When the lap width is greater than 60mm, the lap width is too large, resulting in the weight of the door ring sheet, which cann...

Embodiment 2

[0057] Please refer to image 3 , The difference from Example 1 is the arrangement of solder joints, and the rest are the same as Example 1.

[0058] A manufacturing process of an automobile door ring, in which a plurality of welding spots 5 are arranged crosswise during welding, thereby increasing the welding strength.

Embodiment 3

[0060] Please refer to Figure 4 , different from Embodiment 1 is the structure of the knocker, and the rest are the same as Embodiment 1.

[0061] A manufacturing process for an automobile door knocker is not only suitable for the closed door knocker shown in Embodiment 1, but also for the semi-closed door knocker in this embodiment. In this implementation, the door knocker includes A-pillar sheet material 1, B-pillar sheet material 2 and H-pillar sheet material 4. Adjacent sheets are overlapped together up and down, and laser spot welding or resistance spot welding is performed on the overlapping positions. A plurality of welding spots 5 are formed at the overlapping positions.

[0062] Optionally, semi-closed door knockers including different panels can also be manufactured according to actual usage conditions.

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Abstract

The invention relates to an automobile door ring manufacturing technology. The technology comprises the following steps that welding is conducted, specifically, plates with required sizes are obtained according to the composition of a door ring, the adjacent plates are overlapped together in an up-and-down mode, the overlapping width is 16mm to 60mm, and resistance spot welding or laser spot welding is conducted at the overlapping positions; heat treatment is conducted, specifically, the welded door ring plates are placed in a heating furnace to be heated, isothermal or gradient temperature rising heating is adopted, the heating temperature interval is 830 DEG C to 970 DEG C, and the heat preservation time is 8s to 15s; heat forming is conducted, specifically, the door ring plates are taken out of the heating furnace and put into a heat forming die to be subjected to punch forming, and meanwhile quenching is conducted at the cooling speed of being larger than or equal to 30 DEG C / s; and laser cutting is conducted, specifically, the door ring plates are taken out of the heat forming die, and redundant edge materials are removed through laser cutting. Resistance spot welding or laser spot welding is carried out at the overlapping positions, a special welding wire is not needed, and the manufacturing cost is reduced; and coatings on the plates do not need to be removed in the welding process, the number of working procedures is reduced, and the processing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile parts processing, in particular to an automobile door ring manufacturing process. Background technique [0002] Auto door knocker products can reduce weight by about 15%, while improving their crash performance by about 25%, so door knocker products have become important products developed by auto parts companies. At present, hot stamping door knockers for automobiles are welded by laser tailor welding to A-pillar, B-pillar, reinforced version under A-pillar and threshold to form an integrated door knocker, and then hot stamping process is used to manufacture door knocker products. [0003] At present, there are three main tailor-welding processes for hot stamping high-strength steel: 1. Without peeling off the high-strength steel coating, several sheets are welded together directly by adding welding wire. However, the welding wire required for this process needs to be specially made, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B62D25/04B62D25/20B62D27/02
CPCB23P15/00B62D25/04B62D25/2036B62D27/02
Inventor 安保芹郭东升王绍彬于向蕾潘光慧孙亚平
Owner 凌云吉恩斯科技有限公司
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