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High-wear-resisting cold roll and manufacturing method thereof

A manufacturing method and technology for cold rolling rolls, applied in the field of roll manufacturing, can solve problems such as poor wear resistance, and achieve the effects of high comprehensive mechanical properties, good metallurgical quality, and moderate grain size

Active Publication Date: 2016-03-09
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a high wear-resistant cold roll and its manufacturing method, to solve the problem of poor wear resistance of the roll surface of the existing cold roll, improve the wear resistance of the cold roll, and prolong the service life of the cold roll

Method used

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  • High-wear-resisting cold roll and manufacturing method thereof
  • High-wear-resisting cold roll and manufacturing method thereof
  • High-wear-resisting cold roll and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The manufacturing method of the high wear-resistant cold rolling roll of the present embodiment comprises the following steps,

[0028] 1) Prepare steel raw materials according to the chemical composition and weight percentage in the material of the cold roll, and prepare the roll blank according to the roll blank production process.

[0029] Specifically, steel raw materials are smelted in electric arc furnaces and LF / VD refining furnaces, and cast into electrode ingots. Micro-alloying treatment is carried out by adding trace elements in the medium, and the chemical composition and weight percentage of the remelted electrode ingot are tested. After passing the test, it is forged into a forging billet. Roll blanks are obtained by turning.

[0030] The annealing temperature of the electrode ingot annealing treatment is 750°C, and the annealing time is 24h. Post-forging heat treatment includes normalizing treatment and spheroidizing annealing treatment. The normalizing ...

Embodiment 2

[0039] The high wear-resistant cold rolling roll of this embodiment, the weight percentage of various chemical components in its material is tested, and the content of main components is shown in column 2 of Example 2 in Table 1, and the rest is Fe and unavoidable impurities .

[0040] The manufacturing method of the high wear-resistant cold rolling roll of this embodiment has similar process steps to that of Embodiment 1, and the specific heat treatment parameters different from Embodiment 1 are shown in column 2 of Embodiment 2 in Table 2.

[0041] The cold roll produced in this embodiment has a roll surface hardness of 94-95HSD.

Embodiment 3

[0043] The high wear-resistant cold rolling roll of this embodiment, the weight percentage of various chemical components in its material is tested, and the content of main components is shown in column 3 of Example 1 in Table 1, and the rest is Fe and unavoidable impurities .

[0044] The manufacturing method of the high wear-resistant cold roll of this embodiment has similar process steps to that of Embodiment 1, and the specific heat treatment parameters different from Embodiment 1 are shown in column 3 of Embodiment 2 in Table 2.

[0045] The cold rolled roll prepared in this embodiment has a roll surface hardness of 95-96 HSD.

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Abstract

The invention relates to a high-wear-resisting cold roll. Chemical components in the cold roll comprise, by weight percentage, 0.80%-1.20% of C, 0.4%-1.20% of Si, 0.20%-0.50% of Mn, 7.50%-9.00% of Cr, 0.20%-1.00% of Mo, 0.05%-0.50% of V, less than or equal to 0.40% of Ni, less than or equal to 0.015% of S, less than or equal to 0.015% of P and the balance Fe and inevitable impurities. The high-wear-resisting cold roll has the high wear resistance; and under the same using condition, the service life of the roll is prolonged by more than one time than a roll made of original common chrome steel system materials.

Description

technical field [0001] The invention relates to the technical field of roll manufacturing, in particular to a high wear-resistant cold roll and a manufacturing method thereof. Background technique [0002] In recent years, the demand for cold-rolled sheets, especially high-grade cold-rolled sheets, has been increasing, which has promoted the replacement of cold-rolled roll materials. High wear resistance and long life are the common goals pursued by roll manufacturers and users. With the rapid development of industries such as automobiles, home appliances, and electronics, cold rolling is increasingly pursuing high speed, thin plates, and high quality, and the quality requirements for cold-rolled work rolls are also getting higher and higher. For high-strength steel plates, due to insufficient wear resistance, the roll shape changes after a period of use, so that the cold-rolled plate shape and surface quality cannot meet the requirements, and the rolls have to be replaced a...

Claims

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Application Information

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IPC IPC(8): C22C38/46C21D6/00
CPCC21D6/004C21D6/005C21D6/008C22C38/02C22C38/04C22C38/44C22C38/46
Inventor 杨昱东党坤会朱学刚苗金平
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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