CN103451690A - Method for galvanizing treatment of spring lined in piston ring - Google Patents

Abstract

The invention discloses a method for galvanizing treatment of a spring lined in a piston ring. The appearance of the spring after galvanizing shows a bright blue and white color through the steps of ultrasonic water washing, potassium chloride galvanizing and the like, and the spring further has better rust resistance and appearance decoration; chemical reagents are simple so as to be favorable for protecting the environment; the galvanizing efficiency is close to 100%, working in a wide temperature range can be realized, and the consumption of electric energy is greatly reduced; and compared with original phosphating, the process steps are obviously reduced so as to be favorable for stabilizing quality and improving efficiency.

Description

The zinc-plated treatment process of a kind of piston ring inner lining spring

Technical field

The present invention relates to a kind of process for treating surface of gas engine part, is the zinc-plated treatment process of a kind of piston ring inner lining spring specifically.

Background technology

In piston ring inner lining spring is produced, generally need carry out surface treatment to reach lubricated, antirust and decorative effect to spring, traditional technology is generally pyrochemistry oxidation or common bonderizing.Spring surface after the pyrochemistry oxide treatment is pitch-black shinny, have good antirust and decorative effect, but this method need adopt Sodium Nitrite and sodium hydroxide, and environmental pollution is larger, and simultaneously, Sodium Nitrite has carcinogenic nature, is unfavorable for employee's health; And also there is energy consumption high (oxidizing temperature is generally 135-142 ℃) in this method, oxidization time is long, efficiency is low, and the high problem of cost.Through common parkerized spring surface gray, rust-preventing characteristic and decorative appearance are bad, and spring especially after heat treatment adopts common derust and also there is the problem of fading in phosphating process.By skill upgrading, adopted the black phosphating processing, overcome the not enough and problem that fades of common phosphatization color and luster, but still had the treatment process long flow path, the problem such as industrial chemicals is used more, and wastewater treatment capacity is large.

Therefore, need a kind of new technical scheme to address the above problem.

Summary of the invention

The objective of the invention is the deficiency existed for prior art, providing a kind of can promote rust-preventing characteristic, the outward appearance of spring, and environmental protection and the little zinc-plated treatment process of piston ring inner lining spring of energy consumption.

For achieving the above object, the zinc-plated treatment process of piston ring inner lining spring of the present invention can adopt following technical scheme:

(1), ultrasonic cleaning: utilize hyperacoustic cavitation effect in water, clean and remove the dirty dirt and the antirust composition that adhere on the pre-treatment shaped spring, reduce the impact of dirt on plating solution;

(2), Potassium Chloride Zinc Plating: electroplate grade potassium chloride: 200-240g/l; Electroplate level zinc chloride: 60-80g/l; Boric acid: 25-35g/l; Brightening agent Zn-3A:1-2ml/l; Softening agent Zn-3B:15-30ml/l; PH value: 4.5-5.8; Dk:0.5-5A/dm2; Service temperature: 10-60 ℃; Operating time: 10-15min; S sun: S the moon=1.5～2:1;

(3), washing for the first time;

(4), bright dipping: bright dipping passivator: 1-2%; PH value: 1-3; Time: 4-10S;

(5), washing for the second time;

(6), aging: 80-120 ℃ of thermal cycling wind is dried.

Compare with background technology, adopt method of the present invention, the zinc-plated rear outward appearance of spring is blue white light tone, has rust-preventing characteristic and decorative appearance preferably; Chemical reagent is simple, is conducive to environmental protection; Electroplating efficiency approaches 100%, wide temperature work, and power consumption reduces greatly; With former phosphatization, compare, operation obviously reduces, and is conducive to the raising of stay in grade and efficiency.

Embodiment

Embodiment mono-:

1, ultrasonic cleaning: utilize hyperacoustic cavitation effect in tap water, clean and remove the dirty dirt and the antirust composition that adhere on the pre-treatment shaped spring, reduce the impact of dirt on plating solution;

2, Potassium Chloride Zinc Plating: electroplate grade potassium chloride: 200g/l; Electroplate level zinc chloride: 60g/l; Boric acid: 25g/l; Brightening agent Zn-3A:1ml/l; Softening agent Zn-3B:15ml/l; PH value: 4.5; Dk:0.5A/dm2; Service temperature: 10 ℃ (wide temperature range type); Operating time: 15min; S sun: S the moon=1.5～2:1;

3, washing: tap water flows;

4, bright dipping: the precious bright dipping passivator of blue zinc: 1%; PH value: 1; Time: 4S;

5, washing: tap water flows;

6, aging: 80 ℃ of thermal cycling wind are dried;

Annotate: brightening agent Zn-3A, softening agent Zn-3B, the precious bright dipping passivator of blue zinc are Nanjing Bin Tao Science and Technology Ltd. product.

Embodiment bis-:

1, ultrasonic cleaning: utilize hyperacoustic cavitation effect in tap water, clean and remove the dirty dirt and the antirust composition that adhere on the pre-treatment shaped spring, reduce the impact of dirt on plating solution;

2, Potassium Chloride Zinc Plating: electroplate grade potassium chloride: 240g/l; Electroplate level zinc chloride: 80g/l; Boric acid: 35g/l; Brightening agent Zn-3A:2ml/l; Softening agent Zn-3B:30ml/l; PH value: 5.8; Dk:5A/dm2; Service temperature: 60 ℃ (wide temperature range type); Operating time: 10min; S sun: S the moon=1.5～2:1;

3, washing: tap water flows;

4, bright dipping: the precious bright dipping passivator of blue zinc: 2%; PH value: 3; Time: 10S;

5, washing: tap water flows;

6, aging: 120 ℃ of thermal cycling wind are dried;

Annotate: brightening agent Zn-3A, softening agent Zn-3B, the precious bright dipping passivator of blue zinc are Nanjing Bin Tao Science and Technology Ltd. product.

Piston ring inner lining spring adopts above-mentioned art breading, and outward appearance is blue white light tone, has rust-preventing characteristic and decorative appearance preferably, has also met foreign trade client's needs simultaneously, has promoted the competitiveness of product in market.

Claims (1)

1. the zinc-plated treatment process of piston ring inner lining spring, is characterized in that, comprises the following steps:

(1), ultrasonic cleaning: utilize hyperacoustic cavitation effect in water, clean and remove the dirty dirt and the antirust composition that adhere on the pre-treatment shaped spring;

(2), Potassium Chloride Zinc Plating: electroplate grade potassium chloride: 200-240g/l; Electroplate level zinc chloride: 60-80g/l; Boric acid: 25-35g/l; Brightening agent Zn-3A:1-2ml/l; Softening agent Zn-3B:15-30ml/l; PH value: 4.5-5.8; Dk:0.5-5A/dm2; Service temperature: 10-60 ℃; Operating time: 10-15min; S sun: S the moon=1.5～2:1;

(3), washing for the first time;

(4), bright dipping: bright dipping passivator: 1-2%; PH value: 1-3; Time: 4-10S;

(5), washing for the second time;

(6), aging: 80-120 ℃ of thermal cycling wind is dried.