Weld bonding method for car body cover

A skin and car body technology, applied in the field of car body skin glued spot welding, can solve problems such as complicated process, deformation, uneven skin surface, etc., and achieve the effects of high welding quality, improved production quality and cost saving.

Inactive Publication Date: 2015-10-21
SUZHOU HUARI JINLING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of this application is to provide a car body skin adhesive spot welding method, which belongs to a brand-new skin method, which not only overcomes the problem that the rail car body skin is easily deformed during welding, making the skin surface uneven, It also overcomes the tedious problem of automobile skinning process, which can be applied to both railcar skinning and automobile skinning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A car body skin adhesive spot welding method, comprising the following steps:

[0031] Step 1. Pretreatment: remove oxide film and rust on the side of the car body frame that needs to be connected with the skin;

[0032] Step 2, glue coating; one side of the car body skeleton treated in step 1 is coated with glue with a thickness of 0.1-0.5mm;

[0033] Step 3, connect the skin; bond the prefabricated skin to the car body frame processed in step 2, and apply a force of 20N to the skin during the bonding process, so that the skin and the car body frame are tightly connected;

[0034] Step 4, laser heating; keep the skin obtained in step 4 for 1-2.5s under the condition of the first laser beam power of 350W~550W, so that the glue layer in the laser action area is decomposed in a small amount, and gas is generated;

[0035] Step 5, laser secondary heating; for the skin treated in step 5, keep the power of the second beam of laser at 1500W~1700W and the defocus amount of 3m...

Embodiment 2

[0038] The difference between this embodiment and the first embodiment is that the pretreated car body skeleton is heated to 35°C. Others are the same as in Embodiment 1.

Embodiment 3

[0040] The difference between this embodiment and the first embodiment is that in the second step, glue with a thickness of 0.2 mm is applied to one side of the car body frame. Others are the same as in Embodiment 1.

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PUM

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Abstract

The invention discloses a weld bonding method for a car body cover. The weld bonding method for the car body cover includes the steps of pretreatment, gluing, cover connecting, laser heating and secondary laser heating. In the application process of the weld bonding method for the car body cover, weld bonding of a car body framework and the car body cover can be achieved without any additional clamping tool, a weld joint has no obvious defects, the welding quality is high, the welded cover does not deform, and the production quality is improved. Meanwhile, the treatment process that shape righting is manually conducted on a deformed cover after welding in the prior art is omitted, and therefore the production efficiency is improved, and the cost is saved.

Description

technical field [0001] The present application relates to the field of welding technology, in particular to a method for glued spot welding of car body skins. Background technique [0002] The car body is composed of car body steel frame, car body decoration and car body accessories. For example, the announcement number is CN 202272001 U, and the invention name is a patent for a new type of railway car body. The disclosed technical features include: car body steel frame (1) It is tailor-welded from square tubes and steel plates, and the car body steel frame (1) is streamlined in shape, and the front end of the car body steel frame (1) is inclined backward from bottom to top. The car interior decoration (a) is installed On the skids placed on the inner surface of the car body steel frame (1), the car body accessories (3) are installed on the front and rear ends of the car body steel frame (1); the car body steel frame (1) consists of The front frame (5), the roof frame (6), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00B23P2700/50
Inventor 向延海
Owner SUZHOU HUARI JINLING MACHINERY
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