Hoisting clamp for Sendzimir mill roll heat treatment

A fixture and roll technology, which is applied in the field of hoisting fixtures for heat treatment of Sendzimir rolls, can solve the problems of reduced service life, safety risks, and product shedding of Q235 welded parts, so as to improve service life, improve high-temperature mechanical properties, grain effect

CN112456314APending Publication Date: 2021-03-09BAOSTEEL ROLL SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-03-09

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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.
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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...

Examples

Embodiment 1）

[0029] see Figure 1 to Figure 5 , The lifting jig for heat treatment of Sendzimir rolls in this embodiment includes a jig body 1 and an inverted convex washer 2 .

[0030] The fixture body 1 is an integral pouring piece, including a circular base 11 and lifting parts 12 on both sides; the circular base 11 is provided with a first through hole 11-1; each lifting part 12 is provided with a second Through hole 12-1.

[0031] The inverted convex washer 2 is an integral casting, including a wide outer diameter upper part 21 and a narrow outer diameter lower part 22; the inverted convex washer 2 is provided with a third through hole 2-1.

[0032] The materials of fixture body 1 and inverted convex washer 2 are: 0.5% carbon, 1.2% silicon, 1.2% manganese, 25% chromium, 30% nickel, 0.8 niobium, and the rest are iron and unavoidable impurities.

[0033] The outer diameter of the wide outer diameter upper part 21 of the inverted convex gasket 2 is less than the outer diameter of the a...