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The objective of our backup rolls refurbishment is to enhance the life of backup rolls by applying special cladding technology.
In the factory, according to different work needs, 200t/50t, 50t/10t, in different areas of the plant, 8 sets of 32t/5t tonnage bridge cranes.
The company has large-scale automated continuous submerged arc welding machine tools. 3 sets of surfacing can repair large, medium, and small various specifications and various types.
Metallurgical rolls such as BD1 rolls, backup rolls, and pinch rolls of various sizes and various hole types.
The plant is equipped with 10 heavy-duty machining lathes to meet the processing needs of various types of rolls.
The heat treatment workshop has 7000*3000*3000, 7000*3000*2000, 7000*1800*2000 high temperature. The middle heat treatment furnace has 6 sets, which can meet the heat treatment needs of the surfacing rolls and ensure the quality of the surfacing rolls.
Due to the special characteristics of rolling conditions, various metallurgical rolls are subject to severe thermal wear, but also suffer from thermal fatigue, mill scale scratches and other harsh conditions, on the surface of the product. Damaged, severely scratched, and often need to be ground on the roll surface, which has a great impact on production efficiency and product quality. How to apply the surfacing technology to rebuild the above-mentioned rolls is important. After more than 8 years of experimental research, a series of alloy flux-cored wire and matched high-alkalinity sintered flux suitable for roll surfacing have been developed. Through the modification and experiment of the surfacing equipment, the corresponding surfacing process has been explored. Pre-heating and post-weld heat treatment) At present, BD1 rolls, various types of steel rolls, support rolls and vertical rolls have been successfully applied in Baotou Steel and Jiugang. Since the surfacing working layer has the characteristics of high hardness, good toughness, good cold and heat fatigue resistance, and greatly improves the service life of the rolls.
Customer Benefit
Surfacing roller features