Method for prolonging service life of roller

A roll life, roll technology, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of roll wear consumption, affecting operation rate, spare parts consumption, etc., so as to save roll consumption cost, improve rolling mill operation rate, improve The effect of service life

Inactive Publication Date: 2016-01-27
INNER MONGOLIA BAOTOU STEEL UNION
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AI Technical Summary

Problems solved by technology

In rolling production, because the roll is in direct contact with the rolled material, it participates in the deformation process of the rolled piece. At the same time, the roll itself will also wear out and cause cracks. After reaching a certain rolling tonnage, it needs to be replaced, resulting in consumption of spare parts and affecting the operating rate.

Method used

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  • Method for prolonging service life of roller
  • Method for prolonging service life of roller
  • Method for prolonging service life of roller

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Embodiment Construction

[0014] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the embodiments.

[0015] Implementation steps:

[0016] (1) Turn the roll according to the drawing requirements;

[0017] (2) Carry out surface alloy spraying alloy powder with the roll that turning is good, described alloy powder comprises Cr, Si, Mo, W, mullite and rutile, and mass percent is: Cr8%, Si19%, Mo6%, W6% and molybdenum Come stone 30%, rutile 31%;

[0018] (3) Carry out laser point heating to melt the alloy and the roll matrix metal, so that the alloy forms point-shaped, discretely distributed alloying points, and the laser radiation power density is 104~105W / cm 2 ;

[0019] (4) Rapidly cooling and heat-treating the alloying point at a rate of 103-105°C / s, and the treated rolls are used on-line.

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Abstract

The invention discloses a method for prolonging the service life of a roller. Alloy powder is sprayed to surface alloy of the turned roller, the alloy powder is melted and combined with a roller base body, and a series of laser heating and fusion alloying points are formed. The alloy powder comprises Cr, Si, Mi, W, mullite and rutile. Under the condition that the laser radiation power density is 104-105 W/cm<2>, heating is carried out, and then quick cooling is carried out at the speed of 103-105 DEG C/s. According to the method, by improving the surface quality and the hardness of the roller, the service life of the roller is prolonged. Thus, roller consumption is greatly reduced, the operating rate of a rolling mill is increased, the workloads for replacing the roller on site are reduced for workers, production cost are reduced for enterprises, and good economic benefits and social benefits can be created.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a method for increasing the service life of rolls. Background technique [0002] Roll is an important production tool for steel production enterprises. In rolling production, because the roll is in direct contact with the rolled material, it participates in the deformation process of the rolled piece. At the same time, the roll itself will also wear out and cause cracks. After reaching a certain rolling tonnage, it needs to be replaced, resulting in consumption of spare parts and affecting the operating rate. . Therefore, there are very strict control standards for the requirements of the roll, no matter the appearance size, internal structure, structure and various properties. For these reasons, the use of the roll directly affects the product quality and production efficiency. Therefore, through a A new method to improve the surface quality and hardness of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B21B27/02
CPCC23C24/103B21B27/02
Inventor 张丽雷虎潘向东
Owner INNER MONGOLIA BAOTOU STEEL UNION
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