Surface treatment process for cooling water pipe joint assembly

A technology for surface treatment and cooling water pipes, which is applied in metal material coating process, superimposed layer plating, coating, etc. It can solve the problems of easy leakage of medium in the pipe, reduction of pressure bearing capacity, damage of plastic cooling water pipes, etc., and achieve improvement Decorative appearance, improved anti-discoloration ability, and improved anti-corrosion ability

Inactive Publication Date: 2015-12-02
NINGBO YADA METAL SURFACE TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many cooling water pipes on the market are made of plastic, but the heat resistance and bending performance of plastic cooling water pipes are not good.
Long-term friction can easily damage the plastic cooling water pipe, and the medium in the pipe

Method used

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  • Surface treatment process for cooling water pipe joint assembly
  • Surface treatment process for cooling water pipe joint assembly
  • Surface treatment process for cooling water pipe joint assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The cooling water pipe joint assembly blank made of iron material is firstly subjected to chemical degreasing and ultrasonic degreasing. The composition and concentration of the chemical degreasing solution are: Presol1700:70ml / L; the temperature of chemical degreasing is 50°C, and the time 10min. The composition and concentration of the ultrasonic degreasing solution are: COVENPREP121: 15g / L; the temperature of ultrasonic degreasing is 50°C, and the time is 5min. Then enter the initial electrolytic cell for initial electrolysis. The composition and concentration of the initial electrolytic electrolyte are: Presol7061: 70g / L; the current density of electrolysis is 1A / dm 2 , the electrolysis temperature is 50°C, and the electrolysis time is 5min. After the initial electrolysis, wash with water once, the flow rate is 200L / h, and the time is 10s. After washing with water, pickle with 25% hydrochloric acid for 10 minutes. After pickling, wash with water again, the flow r...

Embodiment 2

[0062] The cooling water pipe joint assembly blank made of iron material is firstly subjected to chemical degreasing and ultrasonic degreasing. The composition and concentration of the chemical degreasing solution are: Presol1700:75ml / L; the temperature of chemical degreasing is 55°C, and the time 12min. The composition and concentration of the ultrasonic degreasing solution are: COVENPREP121: 18g / L; the temperature of ultrasonic degreasing is 55°C, and the time is 6min. Then enter the initial electrolytic cell for initial electrolysis. The composition and concentration of the initial electrolytic electrolyte are: Presol7061: 75g / L; the current density of electrolysis is 2A / dm 2 , the electrolysis temperature is 55°C, and the electrolysis time is 5min. After the initial electrolysis, wash with water once, the flow rate is 200L / h, and the time is 10s. After washing with water, pickle with 28% hydrochloric acid for 12 minutes. After pickling, carry out two washings with water...

Embodiment 3

[0066] The cooling water pipe joint assembly blank made of iron material is firstly subjected to chemical degreasing and ultrasonic degreasing. The composition and concentration of the chemical degreasing solution are: Presol1700:80ml / L; the temperature of chemical degreasing is 60°C, and the time It is 13min. The composition and concentration of the ultrasonic degreasing solution are: COVENPREP121: 20g / L; the temperature of ultrasonic degreasing is 60°C, and the time is 5min. Then enter the initial electrolytic cell for initial electrolysis. The composition and concentration of the initial electrolytic electrolyte are: Presol7061: 80g / L; the current density of electrolysis is 3A / dm 2 , the electrolysis temperature is 60°C, and the electrolysis time is 6min. After the initial electrolysis, wash with water twice, with a flow rate of 160L / h for 10s each time. After washing with water, pickle with 30% hydrochloric acid for 13 minutes. After pickling, wash with water again, the...

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Abstract

The invention relates to a surface treatment process for a cooling water pipe joint assembly. The surface treatment process comprises the steps that a base material is pretreated; a protective layer is formed on the base material and is a zinc layer, and the thickness of the protective layer is 10-15 micrometers; a passive film layer is formed on the protective layer; a closed film layer is formed on the passive film layer. After the surface of the cooling water pipe joint assembly is treated, the cooling water pipe joint assembly is more attractive, better in medium resistance, oxidation resistance, corrosion resistance and other performance, and longer in service life.

Description

technical field [0001] The invention relates to a surface treatment process of a joint assembly, in particular to a surface treatment process of a cooling water pipe joint assembly. Background technique [0002] With the continuous and rapid development of the national economy and the continuous improvement of people's living standards, my country's automobile consumption market has undergone tremendous changes since 2002. The private car consumption market is even more "blowout" growth. In the face of increasingly fierce market competition, auto parts suppliers are also keeping pace with the times to continuously develop safer and more efficient auto parts. [0003] The car structure is mainly composed of the engine, chassis, electrical appliances, and body; among them, the engine is the power device of the car, which is composed of 2 major mechanisms and 5 major systems: crank connecting rod mechanism, gas distribution mechanism, cooling system, fuel supply system, and lu...

Claims

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Application Information

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IPC IPC(8): C23C28/00
Inventor 董阿能
Owner NINGBO YADA METAL SURFACE TREATMENT
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