Boat diesel oil generator tank cover repair process method

A technology of diesel generator and process method, applied in manufacturing tools, metal processing equipment, laser welding equipment, etc., can solve the problems of unrepairable cylinder liner, thinning of the inner wall of the cylinder liner, reduction of strength, etc., and achieves small thermal deformation, residual The effect of low stress and long service life

Inactive Publication Date: 2008-06-25
SHENYANG DALU LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the method of expanding the internal control temporarily solves the problem, it makes the inner wall of the cylinder liner thinner and the strength is lowered, and the harm is obvious
Moreover, the damaged cylinder liner cannot be repaired and can only be scrapped.

Method used

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  • Boat diesel oil generator tank cover repair process method
  • Boat diesel oil generator tank cover repair process method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A cylinder liner for a submarine has a damage depth of 1mm on the working surface and the material is HP-CuCrMo.

[0026] The repair process method consists of the following steps:

[0027] ①Inspection and cleaning of the cylinder liner: Runout detection and size detection of the cylinder liner on the lathe, determine the damaged part, mechanically clean the damaged part, remove the surface fatigue layer, see the attached figure 1 ;

[0028] 1-Chuck, 2-Cylinder liner, 3-Cylinder liner detection and repair parts.

[0029] ②Laser cladding repair of damaged parts: the parameters during the operation are:

[0030] Laser power 6200~8000W,

[0031] Spot diameter 2 ~ 6mm,

[0032] The spot moving speed is 100~150mm / s.

[0033] Use automatic powder feeder to feed powder. Automatic powder feeder (such as figure 2 shown) consists of a hopper 43, a turntable 41 driven by a motor 42, a scraper 44, and a powder feeding pipe 45 with a bell mouth; the hopper 43 is located abov...

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Abstract

The invention provides a technique for repairing an oil electric engine cylinder sleeve for ship, which is characterized in that the invention comprises the following working procedures: 1 detecting and cleaning the cylinder sleeve: carrying out a jump detection and a dimension detection on the cylinder sleeve on a lathe, confirming a hurt part, carrying out mechanical cleaning on the machine type of the hurt part and carrying out detection of removing a surface fatigue layer; 2 laser cladding repairing on the hurt part: the parameters during an operation process are: a laser power of 6200 to 8000W, a facula diameter of 2 to 6mm and a facula moving speed of 100 to 150mm / s; 3 machinery processing to resume the shape of the cylinder sleeve: carrying out machinery processing to resume the original designed dimension state on a boring lathe and a boring lathe. The technique for repairing an oil electric engine cylinder sleeve for ship provided by the invention has the advantages of high suitability, simple and convenient operation, small temperature distortion, uniform welding structure, realizing automatic operation with little residual stress; the invention requires no restoration heat treatment.

Description

technical field [0001] The invention relates to a process method for repairing a cylinder liner of a marine diesel generator. Background technique [0002] In the ocean transportation industry, the power of the marine diesel engine is very large, and the cylinder liner is one of the most important parts of the diesel engine. It has a large size and weight, a complex structure, and high production costs. [0003] The cylinder liner of marine diesel generator is a cylindrical part, which is placed in the cylinder block hole of the machine body, and is pressed and fixed by the cylinder head. The piston reciprocates in its inner hole and is cooled by cooling water outside. [0004] The inner surface of the cylinder liner is directly affected by high-temperature and high-pressure gas, and always has high-speed sliding friction with the piston ring and piston skirt. The surface is in contact with cooling water, and severe thermal stress is generated under a large temperature dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23K26/34B23K26/42C23C24/10B23K26/60
Inventor 刘文孝庄风义吴伟
Owner SHENYANG DALU LASER TECH
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