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Welding processing method for vehicle frame

A treatment method and skeleton technology, applied in the direction of pretreatment surface, device for coating liquid on the surface, coating, etc., can solve the problems of high labor intensity, difficulty in guaranteeing welding quality, and large human resource consumption, etc., to reduce the difficulty and labor intensity, shorten the production and manufacturing time, and reduce the effect of welding quality problems

Active Publication Date: 2013-05-22
GUANGDONG YONGQIANG ALB INT FIRE FIGHTING ENGINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing process for manufacturing vehicle skeletons in car factories is blanking→welding→sanding→primer→grinding→topcoat. However, the carbon steel profiles purchased directly in China generally have serious corrosion problems. In the subsequent welding process The steel must be manually derusted, otherwise it will cause quality problems such as welding pores
However, the speed of manual derusting operation is slow, the consumption of human resources is large, and the intensity of personnel work is high. This kind of operation method seriously limits the automation development of car factories.
However, the current welding treatment method, if it is an automatic sand blasting and rust removal process, due to the many edges and corners of the steel, the automatic sand blasting and rust removal is not thorough, and the welding quality is difficult to guarantee

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A vehicle frame welding processing method, comprising the following steps,

[0026] (1) Use a sandblasting machine to perform sandblasting and derusting treatment on the steel until the color of the sprayed surface is off-white; the flow rate of the sandblasting machine is set to 5~10m 3 / min, during the sandblasting process, the distance between the nozzle of the sandblasting machine and the steel surface is 0.3~0.4m, and the moving speed of the spray gun of the sandblasting machine is 0.5~1m / s, so as to ensure that the speed of sandblasting and rust removal of steel is fast and the effect is good. The steel after blasting and derusting will not affect the subsequent painting and welding process;

[0027] (2) Send the steel after sandblasting and derusting treatment into the paint spraying room for spraying treatment, so that the phosphating primer forms a 30-50 μm thick primer film on the surface of the steel to obtain the phosphating primer steel; The phosphating pr...

Embodiment 2

[0035] A vehicle frame welding treatment method of this embodiment is different from that of Embodiment 1 in that the top coat in step (7) of this embodiment is Miaolong top paint, its humidity is 50-80%, and the baking temperature is 65 ~75°C, the baking time is 30~42min. Certainly, the used finish paint of the present invention also can be the finish paint of other brand, as long as can form finish paint film on the surface of vehicle framework. Other steps and principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Embodiment 3

[0037] The difference between the vehicle frame welding treatment method of this embodiment and that of Embodiment 1 is that the model of this embodiment is 1000HA(S) inorganic zinc-rich primer. Of course, the phosphating primer used in the present invention can also be other types of phosphating primer, as long as the primer film of the phosphating primer can be formed on the surface of the vehicle frame. Other steps and principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

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Abstract

The invention relates to the technical field of vehicle frame welding, in particular to a welding processing method for a vehicle frame. The method comprises the following steps: (1) carrying out treatments of abrasive blasting and rust cleaning; (2) carrying out a phosphide priming paint spraying treatment; (3) discharging materials; (4) welding; (5) carrying out a painting make-up treatment; (6) polishing; (7) carrying out a finish paint treatment; and obtaining a vehicle frame finished product after the finish paint is dried. Compared with the prior art, the welding processing method for the vehicle frame has the advantages that the automatic abrasive blasting treatment is carried out after steel materials are supplied, an automatic treatment is achieved, difficulty and labor intensity of manual abrasive blasting and rust cleaning are reduced; production-manufacturing time is shortened, and production efficiency of a factory is improved. After being carried out abrasive blasting and rust cleaning, the steel material are sprayed and coated mature rust-proof phosphide priming paint, the steel materials which are sprayed and coated the phosphide priming paint can be prevented from being rusted again, and subsequent welding processes can not be affected when the steel materials are stored for a long time, the problem of rust of the steel materials is solved, the welding quality problem caused by steel material rusting in a welding operation process is reduced, and high quality of products are guaranteed.

Description

technical field [0001] The invention relates to the technical field of vehicle frame welding, in particular to a vehicle frame welding treatment method. Background technique [0002] There are many kinds of vehicles in modern society, and the skeleton structure inside the vehicle is complex, especially the carbon steel skeleton structure of fire trucks is particularly complicated, and the number of edges and corners is large. The existing process for manufacturing vehicle skeletons in car factories is blanking→welding→sanding→primer→grinding→topcoat. However, the carbon steel profiles purchased directly in China generally have serious corrosion problems. In the subsequent welding process The steel must be manually derusted, otherwise it will cause quality problems such as many welding pores. However, the speed of manual derusting operation is slow, the consumption of human resources is large, and the intensity of personnel work is high. This kind of operation method serious...

Claims

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Application Information

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IPC IPC(8): B23P15/00B05D7/14B05D7/24B05D3/02B05D3/04
Inventor 刘庆锋
Owner GUANGDONG YONGQIANG ALB INT FIRE FIGHTING ENGINE
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