Advance Thermal Technology. Sankrail, HOWRAH, West Bengal

Hard chrome plating is an electroplating process in which chromium is deposited from a chromic acid solution. Thickness of hard chrome plating ranges from 2 to 250µm. Various types of hard chrome include micro-cracked chromium, micro-porous chromium, porous chromium and crack free chromium. It is essential that the micro-cracked and porous coatings have a minimum thickness between 80-120µm in order to confer adequate corrosion resistance. Micro-cracked chromium has a Vickers hardness of 800-1000 kgmm2, while crack-free chromium has Vickers hardness between 425-700 kgmm2. The formation of micro-porous chromium is achieved by a specialised plating method involving the use of inert suspended particles. Porous chrome plating is developed by etching electrodeposited chromium. These are designed to retain lubricant, for sliding and bearing type applications.

The production and processing of steel subjects mill components to combinations of enormous load, high temperature, corrosion, and abrasion. This has the potential to cause many problems throughout the processing line. Modern steel mills have recognized the importance of working with coated rollers. Thermal sprayed components are designed to permit steel to be processed more rapidly and efficiently.