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Antiwear lubricating paint for engine piston ring

A technology for piston rings and engines, which is applied in coatings and other directions, can solve the problems of engine horsepower reduction, cylinder surface strain, and the inability to solve the sealing performance of cylinder and piston rings, and achieve high temperature resistance and high bonding strength. Effect

Inactive Publication Date: 2003-06-04
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the engine, the piston ring reciprocates at high speed in the cylinder, especially in the new cylinder block, it is easy to cause the cylinder surface to be strained, causing the cylinder to be scrapped. Many domestic piston ring factories have targeted the piston ring surface for this problem. Treatment, such as surface hardening treatment, sulfur nitrogen carburizing, phosphating treatment, etc., have not solved the above problems well. First of all, the cylinder body and piston ring need initial running-in, and the most important thing is that the cylinder body and piston ring cannot be solved. The tightness of the engine reduces the horsepower of the engine

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0024] Weigh PTFE, PTFE, rare earth fluoride, antimony trioxide, cadmium oxide, titanium dioxide, and lead oxides according to the formula in Table 1, then weigh polyamide-imide resin, and use part of the dispersion medium Dissolve, weigh the solid epoxy resin and phenolic resin, dissolve it with part of the dispersing medium, and finally mix with the previously weighed solid material and grind it twice in a cone mill. After the grinding is completed, it is the coating of the present invention. Place the workpiece to be sprayed in an oven at 40-60℃ for 10 minutes, spray it on the surface of the workpiece with the prepared spray according to the conventional method, and wait for the surface to dry (evaporate the dispersing medium), at 220-240℃ After curing for 2 hours, it will form a dry film on the surface of the workpiece after it is naturally cooled to room temperature.

[0025] Table 1: Example A component composition

[0026] Table 2: Composition of ...

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Abstract

The antiwear lubricating paint for engine piston ring is one kind of dry film lubricant. The paint consists of compoiste adhesive, antiseptic additive, antiwear additive, surfactant and dispersing medium. It is painted to the surface of piston and high temperature cured to form firm, compact and dense solid film with excellent antiwear resistance, high impact resistance and good sealing performance.

Description

Technical field [0001] The invention is a wear-resistant lubricating paint for engine piston rings, belonging to a dry film lubricant. Background technique [0002] At present, dry film lubricants have been widely used in many fields and have achieved good results. However, not all dry film lubricants can solve the problem under certain special working conditions. In the engine, the piston ring reciprocates at a high speed in the cylinder, especially in the new cylinder block, it is easy to cause the surface of the cylinder to be strained, causing the cylinder to be scrapped. Many domestic piston ring manufacturers have targeted the surface of the piston ring to this problem. Treatments such as surface hardening treatment, sulphur-nitrocarburizing, phosphating treatment, etc., have not solved the above problems well. First, the cylinder block and the piston ring need to be run-in at an initial stage, and the most important thing is that the cylinder block and the piston ring cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08
Inventor 于刚周惠娣陈建敏
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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