Cladding is a method of fusing different metals into a strip. Thermostats are made with a cladded material of different coefficient of expansion. By cladding copper and steel together, the changing temperature makes the product bend to operate electrical contacts. The temperature range can be adjusted such as a thermostat.
Material can be reduced accurately while skin passing. Hot rolled steel coming from a steel mill or pickle line may need to be reduced 1% to 2% in thickness. This can be done on a coil-to-coil temper pass mill or in line on a cut-to length line.
There are many large rolling mills, including rolling mills that roll hot steel slabs 16” thick x 160” wide down to steel plate. When we think of reducing, we think of at least 20% thickness reduction per pass or many passes. In all cases, by reducing hot or cold metals, you improve its grain structure.
There are many types of coolants. Water is a good coolant, but is a poor lubricant. By adding extreme pressure soluble oil to water, you can have a very good coolant. However, this type of coolant can leave stains on the strip, which is not acceptable for many products.
