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Process for repairing crack on engine oil pipeline of automobile cylinder body

An automobile cylinder block and crack technology, which is applied in the field of automobile maintenance, can solve the problems of difficult to guarantee welding stability and quality, difficult to weld firmly, and cannot meet the requirements, etc., and achieves low cost, easy to master, quality assurance and use. effect of life

Inactive Publication Date: 2011-02-16
常熟市普利擎汽车维修保养有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the materials of the oil pipeline are mostly cast iron and aluminum alloy, the stability and quality of the welding are difficult to guarantee. The conventional welding method often fails to meet the requirements, and there will be secondary cracking or difficulty in welding.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] When the oil pipeline is made of cast iron, the repair process steps are as follows:

[0013] First, clean the cylinder and find out the location of the crack in the oil passage, and at the same time judge the type of crack, and judge whether it is suitable for welding repair through observation;

[0014] Secondly, judging the material of the cylinder body is convenient for choosing the appropriate welding rod. The material is cast iron. Choose the appropriate welding rod according to the type of cast iron. The commonly used models are: Z100 Z116 Z117 Z122Fe Z208 Z238 Z248 Z258Z268 Z308 Z408 Z438 Z508, if there is no cast iron welding rod, it can also be used Stainless steel electrode welding;

[0015] Then, drill a small hole at the beginning and end of the crack, the purpose is to ensure that the crack is no longer cracked, the diameter of the small hole is 4mm, the distance from the crack is 4mm, and the small hole is a round hole;

[0016] Then, V-shaped grooves ar...

Embodiment 2

[0019] When the oil pipeline is made of aluminum alloy, the repair process steps are as follows:

[0020] First, clean the cylinder and find out the location of the crack in the oil passage, and at the same time judge the type of crack, and judge whether it is suitable for welding repair through observation;

[0021] Secondly, judging the material of the cylinder body is convenient for selecting the appropriate electrode. The material is aluminum alloy, and the appropriate electrode is selected according to the type of aluminum alloy;

[0022] Then, drill a small hole at the beginning and end of the crack, the purpose is to ensure that the crack is no longer cracked, the diameter of the small hole is 6mm and the distance from the crack is 5mm, and the small hole is a square hole;

[0023] Then, V-shaped grooves are ground at the cracks to ensure the welding quality;

[0024] Finally, choose a suitable welding rod for welding. It is best to use a DC welding machine when weldin...

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Abstract

The invention provides a process for repairing a crack on an engine oil pipeline of an automobile cylinder body. The crack repairing process comprises the following steps of: cleaning a cylinder body and finding the position of the crack on an oil pipeline; determining the material of the oil pipeline of the cylinder body so as to select a proper welding rod; drilling a small hole on the head and the tail of the crack respectively to ensure that the crack is not cracked any more; grinding a V-shaped groove at the crack to ensure the welding quality; and selecting the proper rod for welding. The invention discloses the process for repairing the crack on the engine oil pipeline of the automobile cylinder body. The crack repairing process has a simple process and low cost, is convenient to operate and easy to master, can ensure quality and service life of a welded joint better, and is particularly suitable for welding automobile pipeline parts made of cast iron or an aluminum alloy material.

Description

technical field [0001] The invention relates to a process for repairing cracks in an oil channel of an automobile cylinder body, in particular to a process for repairing cracks in pipeline parts made of cast iron and aluminum alloy, and belongs to the field of automobile maintenance. Background technique [0002] The oil channel of the cylinder block of the automobile is responsible for delivering oil to the engine, and there is a certain pressure and temperature in the pipeline. Due to the sudden change of oil pressure during oil supply, the inner wall of the oil pipe is subject to a certain stress impact, and cracks will appear in the relatively weak link of the pipe wall, which will even cause oil leakage, causing hidden dangers to the stability and safety of the car. In order to eliminate hidden dangers, all problems can be solved by replacing the oil pipe with a new one, but the repair cost is too high, which will cause a waste of resources. For some cracks, we can rep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/02B23P6/04
Inventor 韩夏明袁雪峰
Owner 常熟市普利擎汽车维修保养有限公司