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A wear-resistant roll for cold rolling of steel strips and a preparation method thereof

A technology of strip steel and roll, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of high material manufacturing cost, complex cold roll preparation process, etc., and achieve good hardness uniformity, high hardness, and roll shaft strength high effect

Inactive Publication Date: 2016-08-17
SHANDONG SHIYU BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned various cold roll materials and preparation methods thereof generally have deficiencies such as high material manufacturing cost and complicated cold roll preparation process.

Method used

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  • A wear-resistant roll for cold rolling of steel strips and a preparation method thereof
  • A wear-resistant roll for cold rolling of steel strips and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Adopt 750 kilograms of medium-frequency induction electric furnaces to smelt the material of the present invention, at first adopt GGr15 steel scrap, Q235 low-carbon steel scrap, low-carbon ferrochromium, ferromolybdenum, ferro-niobium, ferromanganese nitride, metal aluminum and ferroboron as ingredients, then adopt electric furnace smelting, and Carry out micro-alloying treatment on the molten steel, pour wear-resistant roll sleeves on the centrifugal casting machine, and perform hot-packing compounding with the processed roll shafts to obtain wear-resistant rolls for cold rolling of strip steel. The specific preparation method is as follows:

[0034] ① Melt the wear-resistant roll sleeve 2 of the working layer of the wear-resistant roll used for strip steel cold rolling in a 750 kg medium-frequency induction furnace. Wear-resistant roller sleeve 2 adopts GGr15 scrap steel with a mass fraction of 79% (the chemical composition and mass fraction of GCr15 scrap steel are: ...

Embodiment 2

[0039] Adopt 500 kilograms of medium-frequency induction electric furnaces to smelt the material of the present invention, first adopt GGr15 steel scrap, Q235 low-carbon steel scrap, low-carbon ferrochromium, ferromolybdenum, ferro-niobium, ferromanganese nitride, metal aluminum and ferroboron as ingredients, then adopt electric furnace smelting, and Carry out micro-alloying treatment on the molten steel, pour wear-resistant roll sleeves on the centrifugal casting machine, and perform hot-packing compounding with the processed roll shafts to obtain wear-resistant rolls for cold rolling of strip steel. The specific preparation method is as follows:

[0040]① First melt the wear-resistant roll sleeve 2 of the working layer of the wear-resistant roll used for strip cold rolling in a 500 kg medium-frequency induction furnace. Wear-resistant roller sleeve 2 adopts GGr15 scrap steel with a mass fraction of 80.8% (the chemical composition and mass fraction of GCr15 scrap steel are: 1....

Embodiment 3

[0045] Adopt 1500 kilograms of medium-frequency induction furnaces to smelt the material of the present invention, first adopt GGr15 steel scrap, Q235 low-carbon steel scrap, low-carbon ferrochromium, ferromolybdenum, ferro-niobium, ferromanganese nitride, metal aluminum and ferroboron as ingredients, then adopt electric furnace to smelt, and Carry out micro-alloying treatment on the molten steel, pour wear-resistant roll sleeves on the centrifugal casting machine, and perform hot-packing compounding with the processed roll shafts to obtain wear-resistant rolls for cold rolling of strip steel. The specific preparation method is as follows:

[0046] ① First melt the wear-resistant roll sleeve 2 of the working layer of the wear-resistant roll used for strip cold rolling in a 1500 kg medium-frequency induction furnace. Wear-resistant roller sleeve 2 adopts GGr15 scrap steel with a mass fraction of 80% (the chemical composition and mass fraction of GCr15 scrap steel are: 0.99%C, 0....

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Abstract

The invention provides a wear resistance rolling roll for strip steel cold rolling and a manufacturing method of the wear resistance rolling roll, and belongs to the technical field of cold-rolling strip steel. The cold rolling roll is formed by compositing a wear resistance roll sleeve and a machined roll shaft in a hot charging mode. GGr15 waste steel, Q235 low-carbon waste steel, low-carbon chromium iron, ferro-molybdenum, ferroniobium, ferro manganese nitride, metallic aluminum and boron iron ingredients are adopted for the roll sleeve, electric-furnace smelting is conducted, microalloy treatment is conducted on molten steel, and pouring is conducted on a centrifugal casting machine. After quenching and tempering are conducted on the rolling roll, the rolling roll is high in hardness and good in toughness and wear resistance, and a good using effect is achieved.

Description

technical field [0001] The invention discloses a wear-resistant roll and a preparation method thereof, in particular to a wear-resistant roll for cold-rolling strip steel and a preparation method thereof, and belongs to the technical field of cold-rolled strip steel. Background technique [0002] In the steel rolling production process, especially in the cold-rolled strip production process, under the rolling pressure, the rolls are subjected to strong friction and wear, which consumes a lot, resulting in a huge waste of resources and a drop in the operating rate of the rolling mill. In order to improve the performance of rolls and meet the needs of the steel rolling industry, a variety of cold roll materials have been developed. Chinese invention patent CN104032117 discloses a heat treatment method for ultra-high hardness non-ferrous metal cold rolls. The steps of the heat treatment method are as follows: a. First, put the roll in a preheating furnace and preheat it at a te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B27/02B22D13/02
Inventor 戴安旺符寒光
Owner SHANDONG SHIYU BEARING