Centrifugal bimetallic composite roller ring
Name: Centrifugal bimetallic composite roller ring
Model: ø 700 * 500, ø 800 * 500, ø 800 * 600, ø 1000 * 400, ø 1000 * 700, ø 1000 * 800,
Application: Roller ring is a core component of roller machines, four roller crushers, and roller presses, suitable for industries such as brick and tile, metallurgical machinery, ceramics, metallurgy, refractory materials, and artificial sand making.
Technical characteristics of centrifugal bimetallic composite roller ring products:
The roller ring is a key component of the roller crusher. Its anti-wear performance directly determines the continuous operation time of the equipment and the quality requirements for processing various materials. The problem of poor wear resistance of roller rings in the market has long been a global challenge that restricts the widespread application of high-speed fine crushing roller machines. Both domestic and foreign attempts have been made to produce composite roller rings made of high chromium materials using centrifugal composite casting, but have not been successful. This project starts from basic research and overcomes the problem of composite casting of incompatible metals. It adopts the bimetallic method of centrifugal casting and successfully produces high chromium molybdenum copper high alloy/ductile iron bimetallic composite roller rings, solving the equipment matching problem that has long plagued the building materials industry. The main innovative achievements include:
(1) Systematically studied and determined a more reasonable working composition ratio for high alloy cast iron and ductile iron containing chromium, molybdenum, and copper suitable for this bimetallic composite casting.
(2) We have chosen innovative special protective slag and various composite modified components added, providing technological innovation guarantee for better infiltration and metallurgical bonding of the two types of cast iron in the composite casting process.
(3) The dual color infrared temperature measurement method has been adopted, replacing the commonly used methods of relying on experience, visual observation, and timing in the production of metallurgical rolling mill products in other enterprises, to accurately, scientifically, and reasonably control the “key time points” of ductile iron casting, and improve the metallurgical bonding quality and yield of the two metals.
(4) The rare earth composite modification treatment using multi-element alloys can refine the preparation of solidification grains and purify steel (iron) liquid. In combination with various self-developed series of special coating formulas, it reduces the tendency of hot cracking and coarse grains, not in the form of pellets, and irregular arrangement that are prone to occur during the solidification process of high chromium molybdenum copper and other high alloy cast iron (or steel), and improves the wear resistance and mechanical strength of the roller ring.
(5) On the basis of systematic research on the isothermal transformation curve and continuous cooling transformation curve of chromium molybdenum copper alloy cast iron and ductile iron, a scientifically reasonable matching heat treatment technology was adopted to improve the preparation of high chromium molybdenum copper alloy casting, enhance various mechanical properties, and minimize the casting stress of composite roller rings.
Several selling points of centrifugal bimetallic composite roller ring products:
4. Compared with domestic cast steel, cold hard cast steel, high manganese steel, low-alloy steel and other materials, the centrifugal bimetallic composite roller ring of this project has poor wear resistance or toughness, or is prone to cracking due to poor strength. Compared with foreign alloy steel forging but with a high price, the outer layer of the roller ring has high hardness, good wear resistance, high inner layer strength and toughness, safe use, and obvious cost-effectiveness advantages.
Physical picture of centrifugal bimetallic composite roller ring product
