Process Control Facilities 2018-10-31T13:08:34+00:00

Process Control Facilities

ATC has in house chemical testing laboratory to control, monitor and maintain the chemical and DI water used in production floor. The laboratary is also equipped with type of testing instrument capable of doing in house periodical testing base on the plating specification requirement.

Controlled environment is refers to an enclosed low dust environment like class 1000 clean room where the temperature is controlled within 19 – 25 degree C and with relative humidity not exceeding 60%.

A) Salt Spray Test

Salt Spray Test is a standardized test method used to determine corrosion resistance of coated substrates. Coatings provide corrosion resistance to metallic parts made of steel, brass or zinc alloys. Salt spray test is an accelerated corrosion test method to predict the coating life and suitability in use as a protective finish. Test duration depends on the corrosion resistance of the coating; the more corrosion resistant the coating is, the longer the period in testing without showing signs of corrosion. Salt spray testing is popular because it is cheap, quick, well standardized and reasonably repeatable.

B) Coating Weight Test

Coating Weight Test method is used to determinine the weight of coating for comparison with specification requirements. A coating of zinc on iron or steel articles provides protection against corrosion. As the protection is provided by sacrificial loss of zinc, the degree of protection is proportional to the weight of zinc coating. Specifications for zinc-coated articles often provide for different classes of coating so that the purchaser can select the coating weight most suitable to the application.

C) Taber Abrasion Test

Taber Abrasion Test is used to detemine the substrate’s resistance to abrasion and its ability to withstand mechanical action such as rubbing, scraping, or erosion. Abrasion can be difficult to compare but haze variation or weight loss are often evaluated.

The haze or original weight of test specimen is measured. The test specimen is then placed on the abrasion tester. A 250, 500, or 1000-gram load is placed on top of the abrader wheel and allowed to spin for a specified number of revolutions. Different abrading wheels are specified. A haze measurement or final weight is taken. The load and wheel can be adjusted for softer and harder materials.

D) Water Immersion Test

Water Immersion Test is used to determine the degree of coating resistance with water and to predict its service life. Water immersion test failure may be caused by a number of factors including a deficiency in the coating itself, contamination of the substrate, or inadequate surface preparation.

Water immersion tests are mainly applied for research and development of coatings and substrate treatments, specification acceptance, and quality control in manufacturing. These tests typically result in a pass or fail determination, but the degree of failure may also be measured. A coating system is considered to pass if there is no evidence of water-related failure after a specified period of time.

Zinc is a popular coating for steel as it offers good corrosion resistance at an economical price. An expertise in zinc and zinc alloy electroplating, ATC plating commitment is to bringing quality metal finishing to their customers.