Home > FAQ-4


Contact Information

Dongguan Goodjob Precision Components Co.,Ltd.

ADD: No.68, Changsheng North Road, Dalang,Dongguan,Guangdong,China

Tel: +86-769-23327726

Fax: +86-769-23327736


31. Q: What is electroless nickel plating?

A:Electroless Nickel Plating, also known as EN or E/Ni, can be plated over a wide variety of metals including aluminum, titanium, mild steels, stainless steel, hardened steel, copper, brass and zinc die-cast. Electroless nickel plating provides: 

● Uniform coating on most complex,and/or Irregular surfaces

● Improves resistance to galling

● Provides a hard, wear resistant surface

32. Q: What is zinc plating?

A: The zinc plating process offers several advantages to the metal. Zinc plated characteristics include an increase in corrosion resistance (comparable to cadmium) with an addition increase in resistance when chromates and sealers are used during the process. By zinc plating metal, it prolongs the life of the basis metal improves aesthetic value of the part and serves as a good paint base. Additionally, zinc plating services increase the lubricity and can be used for identification purposes when combined with chromates and dyes.


33.Q: What is copper plating?

A: Copper Plating provides a coating which is reddish in appearance. Copper can range from a matte to bright finish which is often depends on the surface brightness of the part. This finish provides good corrosion resistance, but also has the tendency to easily tarnish. Copper is a great coating for solderabilty of small parts, and it also provides an economical finish for parts that require low electrical resistance.


34.Q: What is gold plating?

A: Other than its aesthetic appearance, gold plating has many useful characteristics. The first being that it provides excellent corrosion and tarnish resistance. Second, gold plating is a great finish if conductivity is a major concern. One of the important characteristics of gold plating is that it has an extremely low contact resistance for electricity. Lastly, gold provides a great finish for solderabilty.


35. Q: What is phosphate coating&oil coating?

A:Phosphate is a coating that is often used on steel parts in order to provide corrosion protection, lubricity, or as a pretreatment for further coatings such as paint or powder coating. Typically, once a part has been phosphated, a further coating of oil is applied which will further increase the corrosion protection of the part. The finish provided by the phosphate coating will be gray to black in appearance.


36. Q: What is sandblasting?

A: Sandblasting is the use of compressed air as a driving force, to form a high-speed jet beam spraying material(copper sand,quartz sand, corundum,sand and sand) high speed ject to be required to deal with the surface of the workpiece, the outer surface of the workpiece surface appearance or shape change, due to the impact of abrasive on the surface of workpiece and cutting, workpiece the surface of a certain cleanness and different roughness, the mechanical properties of the workpiece surface is improved, thus improving the fatigue resistance of the workpiece increases between it and the adhesion of the coating and prolong the durability of the coating film, and is also good for coating leveling and decoration.

37.Q: What is black oxide coating?

A: Black oxide coating is a process which provides a conversion coating on iron which changes the surface of the material to a naturally occurring black iron oxide. Though the black oxide plating does provide some corrosion protection by itself it is necessary to put a protective oil on this finish to keep it from rusting.


38. Q: What is Galvanic plating ?

A:Its application is rich in metal product. The main process is to put the parts into the chemical plating solution.  According to the different needs of customers, the parts can be plated into different colors, with high gloss silver, silver, gray silver. Its conductivity of the electroplated product significantly enhanced. How to deal with some components required insulated?  There are two ways: First, to paint insulating oil on required area of the part. Of course, coated with insulating oil area will be black, it is not suitable as appearance side.  Second, to coved with special adhesive paste, to protect them, the same effect can be achieved. 


39. Q: What is vacuum plating? 

A: Generally applicated to a wider range, such as stainless steel sheet and plastic products. Because of its complex process, high environment & equipment requirements, high cost, its price is more expensive than galvanic plating.  its process is : product surface cleaning -> spray primer -> baking primer -> vacuum coating -> spray paint -> baking finish -> packaging  The vacuum plating can be divided into general vacuum plating, UV vacuum plating,  The process consists of evaporation, sputtering, gun color and so on.


40. Q: What is powder coating?

A: Powder coating is a type of coating that is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form. The coating is typically applied electorstatisticaly and is then cured under heat to allow it to flow and form a “skin”. The powder may be a thermoplastic or a thermoset polymer. It is usually used to create a hard finish that is tougher than conventional paint. Powder coating is mainly used for coating of metals. 

First Prev 1 2 3 4 Next Last 4/4