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Low-phosphorus low-sulfur rare-earth alloy material for roller and preparation method thereof

A rare earth alloy, phosphorus and sulfur technology, applied in the field of mold materials, can solve the problems of not meeting the production requirements of high-end alloy materials, low production efficiency of mold steel, and unclear division of labor, etc., and achieve uniform and fine structure and chemical composition, high hardness, The effect of high purity

Inactive Publication Date: 2019-07-26
JIANGSU YULI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the unclear division of labor, coupled with factors such as the level of production technology and equipment, the production efficiency of die steel in my country is low, and there is a certain gap compared with industrially developed countries in terms of product quality and dimensional accuracy; some steel mills also Successively equip some advanced metallurgical production equipment, such as out-of-furnace refining, electroslag remelting, precision forging machine, fast forging machine, etc., and gradually improve the professional production line of die steel to fully play its role, but it cannot meet the production needs of high-end alloy materials , high precision, requirements for stamping resistance, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A rare earth alloy material for rolls and a preparation method thereof. According to the mass percentage, the composition is: C1.5%, Cr 5.3%, Si0.5%, Mn0.6%, W 2.0%, Mo 3.6%, V 2.9% , Co 0.80%, Ni0.3%, Cu0.08%, Nb0.01%, Al0.15%, Ti0.10%, P0.013%, S0.006%, Fe82.141%, and other unavoidable impurities element. The preparation method is as follows: firstly, the alloy ingot with a smooth surface is obtained through the processes of intermediate frequency induction furnace, out-of-furnace refining, electroslag remelting, and argon blowing pouring; , cutting, and straightening processes to obtain alloy rods or plates. The specific steps of heat treatment, forging, hot rolling and annealing are as follows: before forging, heat the die steel ingot to 1160°C, then forge at 1150°C, and the final forging temperature is ≥930°C; The temperature is ≥950°C; then isothermal annealing is adopted, the annealing temperature is 860°C, the temperature is kept for 5 hours, and the temperatu...

Embodiment 2

[0041] A rare earth alloy material for rolls and a preparation method thereof. According to the mass percentage, the composition is: C1.54%, Cr5.5%, Si0.55%, Mn0.7%, W2.1%, Mo 3.7%, V 3.0%, Co 0.9%, Ni0.35%, Cu0.1%, Nb0.02%, Al0.2%, Ti0.15%, P0.014%, S0.007%, Fe81.169%, and others not available Avoid impurity elements. The preparation method is as follows: firstly, the alloy ingot with a smooth surface is obtained through the processes of intermediate frequency induction furnace, out-of-furnace refining, electroslag remelting, and argon blowing pouring; , cutting, and straightening processes to obtain alloy rods or plates. The specific steps of heat treatment, forging, hot rolling and annealing are as follows: before forging, heat the die steel ingot to 1170°C, then forge at 1160°C, and the final forging temperature is ≥930°C; The temperature is ≥950°C; the annealing temperature is 850°C, the temperature is kept for 5 hours, and the temperature is lowered to 450°C with the f...

Embodiment 3

[0044] A rare earth alloy material for rolls and a preparation method thereof. According to the mass percentage, the composition is: C1.58%, Cr5.7%, Si0.6%, Mn0.8%, W2.2%, Mo3.8%, V3.1 %, Co 1.00%, Ni0.4%, Cu0.12%, Nb0.03%, Al0.25%, Ti0.20%, P0.015%, S0.008%, Fe80.197%, and other unavoidable impurity elements. The preparation method is as follows: firstly, the alloy ingot with a smooth surface is obtained through the processes of intermediate frequency induction furnace, out-of-furnace refining, electroslag remelting, and argon blowing pouring; , cutting, and straightening processes to obtain alloy rods or plates. The specific steps of heat treatment, forging, hot rolling and annealing are as follows: before forging, heat the die steel ingot to 1180°C, then forge at 1160°C, and the final forging temperature is ≥930°C; The temperature is ≥950°C; then isothermal annealing is adopted, the annealing temperature is 870°C, the temperature is kept for 5 hours, and the temperature i...

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Abstract

The invention discloses a low-phosphorus low-sulfur rare-earth alloy material for a roller and a preparation method thereof. The alloy material is composed of the following elements of, by weight, 1.5%-1.58% of C, 5.3%-5.7% of Cr, 0.5%-0.6% of Si, 0.6%-0.8% of Mn, 2.0%-2.2% of W, 3.6%-3.8% of Mo, 2.9%-3.1% of V, 0.80%-1.00% of Co, 0.3%-0.4% of Ni, 0.08%-0.12% of Cu, 0.01%-0.03% of Nb, 0.15%-0.25%of Al, 0.10%-0.20% of Ti, less than or equal to 0.015% of P, less than or equal to 0.008% of S, 80.197%-82.141% of Fe and the balance of other inevitable impurity elements. The rare-earth alloy material for the roller has the advantages of being high in hardness, high in wear resistance, high in toughness and the like, being excellent in comprehensive performances and low production cost.

Description

technical field [0001] The invention belongs to the technical field of mold materials, and relates to materials for high-temperature and high-pressure molds, in particular to a high-toughness and high-wear resistance steel material and a preparation method thereof. Background technique [0002] Die steel is an important basic material with a large amount of use in industrial production and a wide range of influences, and is an indispensable material in industrial production. Especially with the rapid development of the steel industry and alloy materials, rolls have become the main forming tools for industrial products. Along with the rapid increase of roll demand, the roll manufacturing industry has gradually developed into an independent industry, and its development speed is ahead of other industries, especially the invented roll alloys are all imported in the domestic market. At present, the improvement of the quality of many industrial products, the improvement of produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/52C22C38/50C22C38/48C22C38/46C22C38/44C22C38/42C22C38/06C22C38/04C22C38/02C22C33/04C21D1/26C21D8/00
CPCC21D1/26C21D8/005C22C33/04C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/52
Inventor 唐玉冰唐汝来唐峰唐玉娟
Owner JIANGSU YULI NEW MATERIAL TECH
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