Processing for piston ring embedded chrome plating impregnated porcelain

A processing method and piston ring technology, applied in the field of piston rings, to achieve the effects of avoiding vicious friction, reducing exhaust emissions, and good wear resistance

A processing method and piston ring technology, applied in the field of piston rings, to achieve the effects of avoiding vicious friction, reducing exhaust emissions, and good wear resistance

CN1924334AInactive Publication Date: 2007-03-07江苏仪征金派内燃机配件有限公司
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Embodiment Construction

[0010] Take a piston ring with a diameter of 102 mm, and after machining to size, carve a groove on the outer surface with a depth of 0.38 mm and a distance of 0.22 mm from the edge, and put the grooved piston ring into 150g / l chromic acid for etching 10 minutes, put into the plating solution of 1200 liters again after etching is finished, the composition of plating solution is chromic acid 220g / l, sulfuric acid 3.2g / l, trivalent chromium 5.5g / l, the weight ratio of (JPRX) additive is Electroplating in a 0.5-15% plating solution takes 500 minutes, and the thickness of the chromium layer deposited is about 0.45 mm. Then put the chrome-plated piston ring into the heat treatment vacuum furnace to infiltrate ceramics, vacuumize to 1-19 Pa, raise the furnace temperature to 40-600 degrees Celsius, turn on the high-frequency power supply with a frequency of 13560HZ, turn on the gas flowmeter to control the power supply, and turn on the Three kinds of gas (silane, borane, nitrogen) wi...

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Abstract

This invention discloses one piston imbedded chroming imbibitions ceramics process method, which comprises the following steps: putting the processed tank on piston outside circle into chromium acid for etching then into coating liquid mixed with chroming acid, hydric sulphate, trivalent chromium and JPRX addictive with chromium layer deposited with cracks; putting the chroming piston ring into thermal process vacuum furnace ceramics for vacuum voltage for 0.1 to 1 MPa for one to eight hours.

Description

technical field [0001] The invention relates to a piston ring processing technology and belongs to the technical field of piston rings. Background technique [0002] The piston ring is an important part of the engine, and the quality of the piston ring directly affects the overall performance of the engine. In order to improve the quality of piston rings, people have done a lot of research work, some research on high wear resistance, some focus on high-strength development, and some solve environmental protection and gas sealing problems. For example, the molybdenum spraying treatment on the surface of the piston ring whose patent application number is 02134426.4 is to carry out the surface molybdenum spraying treatment after the piston ring is nitrided. Although the surface hardness of the piston ring is improved after this treatment. With the development of industrial economy, high-power and high-performance engines have higher and higher requirements for piston rings. F...

Claims

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Application Information

Patent Timeline
07 Mar 2007
Publication
CN1924334A
IPC
F02F3/00
Inventors
魏青松