Installation of cemented carbide roll rings:The sleeve insertion and assembly of cemented carbide roll rings shall be carried out in accordance with the requirements of precision,there shall be appropriate space between the roll rings and axle or between the roll rings and sleeve.the fit is neither tight nor loose,you should check whether the roll rings…
The cemented carbide composite roll water quality requirment:Because of the negative effect of heat corrosion,thermal fatigue and thermal stress,the net-shaped thermal fatigue crack usually appears while the collar working,with the increase of cracks,small parts may come off and even the roll rings is broken.we adopt the cooling method to reduce the bad effect,pervent the cracks…
The cemented carbide composite roll is mainly used on the finishing mill for bar,deformed steel bar and common wire,In this way,we can greatly reduce the frequency of changing groove and roll,thus to reduce the labor intensity and improve the work efficiency.the surface quality and yield shall be improved to a maximum degree,which leads to a…
Copper mould tube needs to meet the performance:Good thermal conductivity, condensation of liquid metal in the copper mould tube. When the copper tube is working, the surface of the inner cavity is heated in the gradual condensation state of the liquid metal, and the back is transferred in the circulation of the cooling water to…
Cause of tungsten carbide ring rolls failure:During the rolling process, the hot-rolled part is in contact with the surface of the groove, which is because the surface temperature of the roll is less increased, and compressive stress is generated on the surface temperature of the roll; on the contrary, when the surface layer of the…
Tungsten carbide ring rolls has the characteristics of high hardness, good strength and wear resistance. It has good impact resistance and crack resistance. However, the roller ring has poor working conditions during rolling, and it is subjected to high load impact and corrosion. There may be trachoma, microcracks and unstable ring mass in the process,…
Tungsten carbide rolls ring have been used in various fields of metal plastic processing. From non-ferrous metals to steel, from hot-rolled wire and pipe to cold-rolled foil strips, rebars, etc., tungsten carbide rolls are used. China has been able to produce dozens of varieties of tungsten carbide rolls from φ8 to φ300mm. However, with the…
Tungsten carbide rolls ring have high hardness, and their hardness values change little with temperature. The hardness at 700 °C is 4 times that of high-speed steel; and the modulus of elasticity, compressive strength, flexural strength and thermal conductivity are also high. More than 1 times the tool steel. All these properties ensure that the…
With the increasingly fierce competition in the quality and price of steel products,steel companies are constantly updating their equipment technology to continuously increase the rolling speed of rolling mills. At the same time, how to reduce the number of rolling mills and further improve the effective operation rate of rolling mills. It has become an…
Graphite electrode, mainly made of petroleum coke and needle coke, coal tar pitch as binder, is prepared by calcination, compounding, kneading, pressing, roasting, graphitization and machining, and is released in the form of electric arc in electric arc furnace. The conductor that heats and melts the charge of the electric charge can be classified into…
