High-wear-resistance high-accident-resistance secondary intermediate roll
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An intermediate roll, high wear-resistant technology, applied in the direction of rolls, furnace types, furnaces, etc., can solve the problems of low silicon steel mileage, spalling, poor fatigue resistance, etc., and achieve the effect of high overall cost performance and low use cost
Inactive Publication Date: 2020-12-22
宜兴市鑫源辊业有限公司
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[0002] At present, the same kind of rolls at home and abroad are made of 5H12 material. After the overall heat treatment, the required hardness is reached. The single-ro
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Embodiment 1
[0031] The high wear resistance and high accident resistance secondary intermediate roll of the present invention described in the present invention comprises the following components in parts by weight,
[0042] (11) Fe and unavoidable impurities 940 parts,
[0043] Its preparation method, it comprises the following steps,
[0044] (1) Refining according to the chemical composition and parts by weight, casting into ingots, electroslag remelting, and forging to form rough billets,
[0045] (2) Carry out forging and spheroidizing annealing treatment on the rough billet to obtain a steel billet,
[0046] (3) Carry out rough turning and conditioning treatment on the st...
Embodiment 2
[0056] The high wear resistance and high accident resistance secondary intermediate roll of the present invention described in the present invention comprises the following components in parts by weight,
[0057] (1) C 14 parts,
[0058] (2) Si 5 parts,
[0059] (3) 4 parts of Mn,
[0060] (4) Cr 108 parts,
[0061] (5) Mo 11 parts,
[0062] (6) V 9 copies,
[0063] (7) Co 3.5 parts,
[0064] (8) 2.3 parts of silicon-copper masterbatch wear-resistant agent,
[0065] (9) P 0.25 parts,
[0066] (10) S 0.26 parts,
[0067] (11) Fe and unavoidable impurities 990 parts,
[0068] Its preparation method, it comprises the following steps,
[0069] (1) Refining according to the chemical composition and parts by weight, casting into ingots, electroslag remelting, and forging to form rough billets,
[0070] (2) Carry out forging and spheroidizing annealing treatment on the rough billet to obtain a steel billet,
[0071] (3) Carry out rough turning and conditioning treatment on...
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Abstract
The invention relates to a high-wear-resistance high-accident-resistance secondary intermediate roll. The secondary intermediate roll is prepared from (1) 12-15 parts of C, (2) 2-6 parts of Si, (3) 2-5 parts of Mn, (4) 100-110 parts of Cr, (5) 8-12 parts of Mo, (6) 7-10 parts of V, (7) 3-5 parts of Co, (8) 1-3 parts of silicon-copper master batch wear-resistant agents, (9) 0.2-0.3 part of P, (10)0.2-0.3 part of S, and (11) 800-1000 parts of Fe and inevitable impurities. The preparation method of the secondary intermediate roll comprises the steps of (1) performing refining, pouring into ingots, electroslag remelting, forging forming according to chemical composition and weight fraction to make a rough billet, (2) conducting forging and spheroidizing annealing treatment on the rough billetto obtain a steel billet; (3) conducting rough turning and modulation treatment on the steel billet; (4) conducting quenching heat treatment on the steel billet; (5) conducting tempering treatment onthe steel billet; (6) performing refining; and (7) performing surface acoustic wave detection. According to the high-wear-resistance high-accident-resistance secondary intermediate roll, the overallhardness can reach 80-83 HSD, the overall hardness uniformity is smaller than or equal to 1 HSD, the service life is long, and the accident resistance is improved by 1.5 times or above compared with that of a traditional roll.
Description
technical field [0001] The invention relates to a secondary intermediate roll, in particular to a secondary intermediate roll with high hardness, high wear resistance and high accident resistance. Background technique [0002] At present, the same kind of rolls at home and abroad are made of 5H12 material. After the overall heat treatment, the required hardness is reached. The single-rolled silicon steel has a low kilometer, and the rolls have defects such as poor fatigue resistance and peeling to varying degrees. Cost-effective two intermediate rolls. Contents of the invention [0003] Purpose of the invention: The purpose of the present invention is to overcome the deficiencies in the prior art and provide a roll with an overall hardness up to 80-83HSD, an overall hardness uniformity ≤ 1HSD, a long service life, and an anti-accident performance that is 1.5 times higher than that of traditional rolls. High wear resistance and high accident resistance two middle rollers. ...
Claims
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