Ramic K-Tech Coatings Pvt Ltd
ALS Tech LLC
Ramic K-Tech Coatings / ALS Tech LLC
ph: India + 91 89395 52505 / USA (302) 401-0497
info
Sink roll - Molten zinc
Sink roll or Pot roll immersed in the molten zinc bath is affected by the dross picked up by the coil. Also it is attacked by the molten zinc leading to pitting and build ups. All these factors affect the coil surface.
Sink rolls used in molten zinc are traditionally sprayed with tungsten carbide. Such rolls have very short life.
The life is significantly extended by using K-Ramic CDC (chemically densified coating).
The life increase with K-Ramic CDC impregnated tungsten carbide sink rolls is substantial.
Case Study
Sink rolls are an simple but difficult roll to build. They work in a very corrosive environment, i.e. molten zinc. They typically see temperatures in excess of 800 degrees Fahrenheit for weeks at a time. Materials used are made to withstand this criteria, so they are also difficult to machine. The roll is made from a 300 or 400 series stainless steel. The body is a centrifugal cast stainless steel and the end bell/journal is from a static casting.
Specifications
Coatings & Life
Most automotive product lines have carbide, but some of these rolls have no coatings on them. An uncoated roll may last up to 2 weeks, but with carbide coatings and special bushings they have lasted up to 5 weeks. With K-Ramic CDC, they give 2 to 5 times the life.
Material
Typically a stainless steel that could withstand extreme temperatures & high corrosion for extended periods of time.
Body Shape
There is a variety of different shapes put in the body from straight body, crowned and tapered.
Grooves
A variety of groove patterns and pitches based on customers specifications. Special grooves for carbide coatings.
Balance
These rolls can operate at high line speeds, but due to the fact they sit in molten liquid, they typically are static balanced.
For more information
E mail: info@cercoat.comRamic K-Tech Coatings / ALS Tech LLC
ph: India + 91 89395 52505 / USA (302) 401-0497
info