Hoisting clamp for Sendzimir mill roll heat treatment

Abstract

The invention discloses a hoisting clamp for Sendzimir mill roll heat treatment. The hoisting clamp comprises a clamp body and an inverted-T-shaped gasket, wherein the clamp body is an integrally-poured integrated piece; the inverted-T-shaped gasket is an integrally-poured integrated piece; and each of the clamp body and the inverted-T-shaped gasket is made of 0.4%-0.6% of carbon, 0.5%-2.0% of silicon, 0.5%-2.0% of manganese, 20%-30% of chromium, 25%-35% of nickel, 0.5%-1.0% of niobium and the balance of iron and inevitable impurities. The hoisting clamp disclosed by the invention is composedof the clamp body and the inverted-T-shaped gasket, and each of the clamp body and the inverted-T-shaped gasket is the integrally-poured integrated piece, so that the application range of the hoistingclamp is enlarged, product falling cannot be caused, and harm of welding to the human body is avoided; and particularly, the clamp body and the inverted-T-shaped gasket are made of materials, so thatthe conditions of decarburization and deformation in the quenching process at about 1200 DEG C can be avoided, and the service life of the hoisting clamp is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of lifting fixtures, and in particular relates to a lifting fixture for heat treatment of Sendzimir rolls. Background technique [0002] Sendzimir mill, also known as multi-roll mill or 20-roll mill, is currently the most important type of rolling mill for rolling stainless steel, silicon steel and alloy steel and other hard-to-deform metal sheets and coils. Compared with conventional 4-roll mills and 6-roll mills, Sendzimir The rolling mill can roll out thinner and higher precision strip products. The rolls used in this mill are called Sendzimir rolls. [0003] The conventional material of Sendzimir roll is H12 die steel, D2 tool steel, etc., the quenching temperature is about 1050 ℃, and the lifting fixture for heat treatment is Q235 welded parts, and the service life can reach 25-30 times. [0004] With the advancement of science and technology, the demand for high-quality cold-rolled sheets and coils i...

AI Technical Summary

Problems solved by technology

[0005] For Sendzimir rolls made of semi-high-speed steel and high-speed steel, the service life of welded parts made of Q235 is greatly reduced, and generally can only be used for 5 to 8 times

[0006] In addition, when the welded parts are repeatedly heated and cooled at high temperatures, desoldering will occur, which will easily cause the product to fall off, which will not only cause product damage, but also pose a safety risk. The welded parts will also produce toxic gases, ultraviolet rays, etc. during the welding process, which are also harmful to the human body. certain damage

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