网上棋牌游戏

汽车配件电镀

categories of news

Product Categories

contact us

Company Name: Yantai Yuntong Electroplating Co., Ltd.

Contact: Mr. Zhao  

Phone: 0535-4212727  

Mobile phone: 18353530888/18363806777

Address: No. 812, Government Street, Muping District, Yantai

Website: acwlkj.cn

Postcode: 264100


What are the factors that affect the quality of electroplating in Yantai?

Your current location : Home >> News >> Company News

What are the factors that affect the quality of electroplating in Yantai?

作者: 烟台运通电镀有限公司点击: Release Date: 2018-10-09 Author: Plating Co., Ltd. Yantai Express Views:

加工质量影响因素说明 Explanation of factors affecting the quality of electroplating in Yantai

One: The chrome plating process needs an ideal current output waveform to improve the reliability and integrity of the process.

The output waveform is flat and the frequency is increased, which can ensure that the crystal of the coating is fine, the hole slope is small, the binding force is good, and the brightness and flatness are improved.

Therefore, chrome-plated power supplies require low-ripple rectifier power supplies, such as DC engines and three full-wave rectifier power supplies.

2: For alloys containing nickel and high chromium and stainless steel plating hard chromium, a cathode current that is many times smaller than the normal current density should be used to activate the cathode, and then gradually increase the current density to a normal value.

3: For hard chromium plating of cast iron parts, because cast iron contains a large amount of carbon, the overpotential of hydrogen precipitation on carbon is relatively low. Therefore, when chromium plating of cast iron parts, hydrogen ions will be preferentially reduced on the surface and a large amount of hydrogen bubbles will be precipitated, affecting Electrodeposition of metallic chromium. Therefore, for hard chromium plating of cast iron parts, inrush current is required. Tame the surface to produce a layer of metallic chromium, and then return to normal current density operation.

Four: For hard chrome-plated parts with thick oxide film on the surface or parts that are powered off halfway during electroplating, the parts are subjected to anodic activation treatment under anode current for a short time, so that the oxide film is chemically dissolved under the action of current and the surface becomes Micro-roughness, and then quickly turn the part into a cathode, operate with a stepped current, and obtain a coating with good bonding force by normal plating.

Five: The residual stress on the surface of the part has a greater impact on the binding force of hard chromium. Because parts also increase internal stress during machining.

Without the stress-relief heat treatment process (200-230 ° C, 1-2 hours) before chrome plating, it is easy to cause scale peeling, which has been proven in production practice.

Six: Many parts need to be ground after chrome plating to achieve accuracy and use requirements.

The improper surface of the grinding process causes local heat generation, which will cause internal stress of the chromium layer and affect the bonding force of the plating layer.

The purpose of removing hydrogen is to reduce the brittleness of the chromium plating layer and the hydrogen embrittlement generated by the base metal during electroplating.

Dehydrogenation should be performed as short as possible after plating in oil or air.

锌镍合金,烟台电镀,电镀

URL of this article: http://acwlkj.cn/news/413.html

Keywords: Yantai electroplating , zinc-nickel alloy , electroplating

Recently Viewed:

    青岛 威海 潍坊 诸城 淄博 烟台 Hot Products | Main Area: Muping Qingdao Weihai Weifang Zhucheng Zibo Yantai

    Yantai Yuntong Electroplating Co., Ltd.

    Contact: Mr. Zhao

    Mobile: 183-5353-0888 / 183-6380-6777

    Phone: 0535-4212727 4268278

    Fax: 0535-4216068

    Website: acwlkj.cn

    Address: No. 812, Government Street, Muping District, Yantai

     汽车配件电镀 汽车配件电镀

    Scan and contact us

  • online service
  • contact number
    13905351076

  • Follow us

    汽车零部件维修,锌镍合金,烟台电镀


  • Follow us

    汽车零部件维修,锌镍合金,烟台电镀

  • Leave message
  • Online consultation
  • Tencent QQ