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…
LMM GROUP will participate in The Bright world of Metal exhibition from June 25th to 29th, 2019. The location and booth number are as shown in the picture. We sincerely invite you to meet and discuss with you, and bring a beautiful gift. Please leave in the form below Your contact information, LMM GROUP will…
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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…
PRODUCT DESCRIPTION Graphite electrode is made of high quality calcined petroleum coke and imported needle petroleum coke. It is manufactured through the process of calcining, dosing, mixing, forming, baking, impregnating, graphitization in a high temperature of over 3000°c, and then machining. Graphite electrode has the advantages of low electrical resistance, low ash content, high mechanical…
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