Rolls for rough stand mills require a combination of some properties, some of which can be counteracted by the others. These properties include wearability, resistance of fire cracking and impact, hot hardness and hot strengh etc. Excessive network carbides will improve wearability and impact resistance but dramatically reduce fracture toughness. Under rough rolling process they can promote fire cracking formation and added to form Bainitic/Martensitec(acicular) matrix, which is more wearable than conventional pearlitic matrix. The Molybdenum can also improve the hot hardness of rolls.
This type of roll is manufactured from high alloy materials with special heat treatment. Carbide content in the matrix is less than 5%, which is satisfactory to the requirement of rough stand mill.
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Product Specification / Models
Changzhou Kaida Heavy Industry Technology Co., Ltd. Was founded in 1951, start research and develop hot rolling mill rolls in 1979. After many years of product research and technology innovation, Kaida Roll now is being the top three specialized roll manufacture and the largest manufacture for section mill roll in China.
The advanced new workshop was constructed and put into operation in 2007. Since then, Kaida Roll is capable of providing cast rolls, sleeve, shaft and forged steel roll series used for rolling rail beam, section steel, rod, bar, strip, pipe and coil. With 35 years experience, Kaida roll have received many manufacture patents and invention patent, being the world famous roll manufacture company with process engineering, research and development, quality inspection, steel rolling process and after service technical support.
By our years' efforts, our products have been serving in the main Chinese steel plants. We also export our products to U. S, Mexico, Spain, Canada, France, Germany, Italy, Turkey, India etc. The rate of export products is over 30%.
The Chairman Company of China Roll Council.
The Chairman Company of China Casting Association Roll Branch.
The Vice Chairman Company of China Iron & Steel Industry Association Equipment Branch.