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  • 电镀加工的方法和分类你知道吗
  • 本站编辑:杭州晨诺机械科技有限公司发布日期:2019-04-09 21:34 浏览次数:
电镀加工方法镀层分类
 
Classification of Coatings for Electroplating Processing
 
电镀加工分为挂镀、滚镀、连续镀和刷镀等方式,主要与待镀件的尺寸和批量有关。
 
Electroplating can be divided into hanging plating, barrel plating, continuous plating and brush plating, which are mainly related to the size and batch size of the parts to be plated.
 
挂镀适用于一般尺寸的制品,如汽车的保险杠,自行车的车把等。滚镀适用于小件,如紧固件、垫圈、销子等。连续镀适用于成批生产的线材和带材。刷镀适用于局部镀或修复。电镀液有酸性的、碱性的和加有铬合剂的酸性及中性溶液,无论采用何种镀覆方式,与待镀制品和镀液接触的镀槽、吊挂具等应具有一定程度的通用性。 电镀加工
 
Hanging plating is suitable for general size products, such as car bumpers, bicycle handlebars, etc. Barrel plating is suitable for small parts, such as fasteners, washers, pins, etc. Continuous plating is suitable for batch production of wire and strip. Brush plating is suitable for local plating or repair. The plating bath contains acidic, alkaline and acidic and neutral solutions with chromium mixture. No matter what plating method is adopted, the plating bath and hanger which contact with the products to be plated and the plating solution should have a certain degree of universality. Electroplating process
 
镀层分为装饰保护性镀层和功能性镀层两类。装饰保护性镀层主要是在铁金属、非铁金属及塑料上的镀铬层,特别是钢的铜-镍-铬层,锌及钢上的镍铬层。为了节约镍,人们已能在钢上镀铜-镍/铁-高硫镍-镍/铁-低固分镍-铬层。与镀铬层相似的锡/镍镀层,可用于分析天平、化学泵、阀和流量测量仪表上。
 
The coatings can be divided into decorative protective coatings and functional coatings. Decorative protective coatings are mainly chromium plated on iron, non-ferrous metals and plastics, especially copper-nickel-chromium coatings on steel, zinc and nickel-chromium coatings on steel. In order to save nickel, copper-nickel/iron-high sulphur nickel-nickel/iron-low solid nickel-chromium coatings have been plated on steel. Tin/nickel plating similar to chromium plating can be used in analytical balances, chemical pumps, valves and flow meters.
 
功能性镀层这种镀层种类很多,如:
 
There are many kinds of functional coatings, such as:
 
①提高与轴颈的相容性和嵌入性的滑动轴承罩镀层,铅-锡,铅-铜-锡,铅-铟等复合镀层;
 
(1) Improving the compatibility and embeddedness of journal bearing cover coatings, lead-tin, lead-copper-tin, lead-indium composite coatings;
 
②用于耐磨的中、高速柴油机活塞环上的硬铬镀层,这种镀层也可用在塑料模具上,电镀加工服务,具有不粘模具和使用寿命长的特点;
 
(2) Hard chromium coating for wear-resistant piston rings of medium and high-speed diesel engines, which can also be used in plastic moulds and plating processing services, has the characteristics of non-sticking moulds and long service life;
 
③在大型人字齿轮的滑动面上镀铜,可防止滑动面早期拉毛;
 
(3) Copper plating on the sliding surface of large herringbone gears can prevent early piling on the sliding surface.
 
④用于防止钢铁基体遭受大气腐蚀的镀锌
 
(4) Zinc plating used to prevent atmospheric corrosion of iron and steel substrates
 
⑤防止渗氮的铜锡镀层;
 
_Copper-tin coating to prevent nitriding;
 
⑥用于收音机、电视机制造中钎焊并防止钢与铝间的原电池腐蚀的锡-锌镀层。适用于修复和制造的工程镀层,有铬、银、铜等,电镀加工厂,它们的厚度都比较大,硬铬层可以厚达300微米。
 
Tin-zinc coatings for brazing radio and TV sets and preventing corrosion of galvanic batteries between steel and aluminium. Applicable to repair and manufacture of Engineering coatings, such as chromium, silver, copper, electroplating processing plants, their thicknesses are relatively large, hard chromium layer can be up to 300 microns thick.