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Automobile transmission shaft sliding spline surface coating process

A surface coating and transmission shaft technology, which is applied to the surface coating liquid device, pretreatment surface, coating, etc., can solve the problems of insufficient comprehensive performance, insufficient bonding force between the surface of the spline shaft and the coating, etc. Achieve the effect of avoiding low direction sensitivity, low cost and high precision

Inactive Publication Date: 2015-01-14
WUXI CHENGBO SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the prior art, the spline shaft is treated by the surface coating process, the bonding force between the surface of the spline shaft and the coating is insufficient, and the comprehensive performance is not good enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A surface coating process for the sliding spline of an automobile transmission shaft, the process including the following steps:

[0034] (1) Steam cleaning and sandblasting pretreatment of splines;

[0035] (2) Immerse the pre-treated spline into the mixture of phenolic resin and epoxy resin modified paint, drain the excess mixture and dry;

[0036] (3) Heat the dried spline resistance furnace to 220~300℃;

[0037] (4) Use fluidized bed spraying to coat the surface of the spline with nylon 11;

[0038] (5) Cool down after solidification to obtain sliding spline of automobile transmission shaft.

[0039] The thickness of the nylon 11 coating is 0.5 mm.

Embodiment 2

[0041] A surface coating process for the sliding spline of an automobile transmission shaft, the process including the following steps:

[0042] (1) Ultrasonic cleaning, sandblasting, and phosphating pretreatment of splines;

[0043] (2) Immerse the pre-treated spline into the mixture of phenolic resin and epoxy resin modified paint, drain the excess mixture and dry;

[0044] (3) Heat the dried spline induction furnace to 300℃;

[0045] (4) Use fluidized bed spraying to coat the surface of the spline with nylon 11;

[0046] (5) Cool down after solidification to obtain sliding spline of automobile transmission shaft.

[0047] The thickness of the nylon 11 coating is 0.2 mm.

Embodiment 3

[0049] A surface coating process for the sliding spline of an automobile transmission shaft, the process including the following steps:

[0050] (1) Scrub and sandblast the spline;

[0051] (2) Immerse the pre-treated spline into the mixture of phenolic resin and epoxy resin modified paint, drain the excess mixture and dry;

[0052] (3) Heat the dried spline resistance furnace to 250℃;

[0053] (4) Use fluidized bed spraying to coat the surface of the spline with nylon 11;

[0054] (5) Cool down after solidification to obtain sliding spline of automobile transmission shaft.

[0055] The thickness of the nylon 11 coating is 0.4 mm.

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PUM

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Abstract

The invention relates to an automobile transmission shaft sliding spline surface coating process. The process comprises the following steps: (1) performing cleaning and sandblasting pretreatment on a spline; (2) immerging the pretreated spline into a mixed solution of phenolic resin epoxy resin modified paint, draining the residual mixed solution and drying; (3) heating the dried spline to 220-300 DEG C; (4) performing nylon 11 coating on the surface of the spline by use of a fluidized bed spraying method; (5) after curing, cooling, thereby obtaining the automobile transmission shaft sliding spline. According to the automobile transmission shaft sliding spline surface coating process, the high-temperature-resistant phenolic resin and epoxy resin modified paint with good adhesive force are selected as intermediate substances, and are high-temperature resistant, and the adhesive forces between the phenolic resin and epoxy resin modified paint and the surfaces of metal parts are high, so that the automobile transmission shaft sliding spline surface coating process completely conforms to the coating requirements.

Description

Technical field [0001] The invention relates to the technical field of surface treatment of spline shafts, in particular to a surface coating process for sliding splines of automobile transmission shafts. Background technique [0002] The spline shaft is one of the key parts of the rotation system, steering system, and control system of automobiles and various engineering machinery. Traditional spline shafts require high processing requirements (requires heat treatment, fine grinding, etc.). The steel parts are in direct contact with the steel parts during work. The fit gap is large, the friction force is large, and the wear is easy, especially when the car is running at high speed or When the road conditions are bad, it is easy to produce abnormal noise and severe jitter, which not only affects its service life, but also seriously affects the stability and comfort during operation. The United States, France, Japan and other developed countries have now generally used surface co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/00B05D3/10
Inventor 李飞
Owner WUXI CHENGBO SCI & TECH DEV
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