Manufacturing process of abrasive wear-proof cylinder liner
A production process and abrasive wear technology, applied in metal material coating process, cylinder, coating, etc., to achieve the effect of improving the ability to resist abrasive wear
Inactive Publication Date: 2012-05-09
陶晓明
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Problems solved by technology
After the inspection and cleaning of the finished cylinder liner, the overall nitriding treatment is carried out
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0007] 1. The production process is as follows:
[0008] Rough casting-rough machining-tempering treatment-semi-finishing-finishing-inspection-cleaning-nitriding
[0009] Among them, the tempering treatment process: heat up at a rate not higher than 70°C / hour, reach 580°C for 8 hours, then cool down to 150°C at a rate not higher than 70°C / hour, and cool freely in the air.
[0010] Nitriding treatment process: heating up at a rate not higher than 65°C / hour, nitriding between 490°C-510°C, reaching 510°C for 6 hours, and then cooling down to 150°C at a rate not higher than 65°C / hour , free cooling in air.
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Abstract
The invention relates to a manufacturing process of an abrasive wear-proof cylinder liner. Before semi-finishing of the cylinder liner, tempering treatment is carried out, and then semi-finishing and finishing are carried out. The finished cylinder liner is subjected to whole nitrogen treatment after examination and washing, and finally a 0.21mm white bright layer, a 0.8mm diffusion layer and a compact nitrided layer are formed on the inner surface of the cylinder liner, wherein the surface hardness of the nitrided layer is 600-650HV, thus the abrasive wear-proof performance of the cylinder liner is improved. The manufacturing process of the abrasive wear-proof cylinder liner has the beneficial effect that by applying the manufacturing process, the wear resistance of the cylinder liner is increased, and the product sales are increased.
Description
technical field [0001] The invention relates to a production process of an anti-abrasive wear cylinder liner. Background technique [0002] The cylinder liner is an important part of the heart of the internal combustion engine, and its wear resistance has a great influence on the service life of the internal combustion engine. Especially in places with a lot of dust in the air, the abrasive wear on the inner wall of the cylinder liner is caused by the tiny dust particles entering the engine. The gap between the cylinder liner and the piston increases, the fuel consumption increases, and the engine is seriously damaged. In order to improve the wear resistance of the cylinder liner, some manufacturers use the overall quenching of the cylinder liner or inner hole quenching, which is costly and the size of the inner and outer circles is unstable; some manufacturers use rare alloy elements such as V and Ti to strengthen the internal structure of the cylinder liner. , but the pro...
Claims
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IPC IPC(8): F16J10/04C23F17/00C23C8/26
Inventor 陶晓明
Owner 陶晓明