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Boron-added high-speed steel roll ring and preparation method thereof

A high-speed steel and roll ring technology, applied in the field of steel production, can solve the problems of high cost and high price of roll rings, and achieve the effects of reduced production costs, improved hardenability, and low production costs

Active Publication Date: 2021-12-31
安徽环渤湾高速钢轧辊有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although high-carbon and high-vanadium high-speed steel roll rings have excellent performance, they contain more expensive vanadium elements, and some high-speed steel roll rings even contain more cobalt, an expensive strategic substance that is very scarce in my country, resulting in a sharp increase in the cost of roll rings

Method used

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  • Boron-added high-speed steel roll ring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A boron-added high-speed steel roll ring and a preparation method thereof, adding low-priced boron element to replace the expensive vanadium element, and realizing the reduction of the cost of the high-speed steel roll ring. The specific preparation process steps are as follows:

[0025] ①First, in a 500 kg medium frequency induction furnace, use scrap steel, ferrochromium, ferromolybdenum and ferrotungsten as raw materials, mix and heat to melt into high-speed steel molten steel. After the molten steel is melted, add ferrosilicon, ferromanganese and metal aluminum in turn, The chemical composition and mass fraction of molten HSS in the furnace are controlled at 0.27%C, 6.07%Cr, 0.83%Mn, 4.14%Si, 0.38%Al, 8.61%W, 2.29%Mo, 0.027%S, 0.033%P, The balance of Fe; heated to 1613 ℃, and then added FeTi70 baked at 720 ℃ for 150 minutes (the chemical composition and mass fraction of FeTi70 are 71.55% Ti, 2.26% A1, 0.14% Si, 0.007% S, 0.012% P, the remaining FeTi70 The amount of ...

Embodiment 2

[0029] A boron-added high-speed steel roll ring and a preparation method thereof, adding low-priced boron element to replace the expensive vanadium element, and realizing the reduction of the cost of the high-speed steel roll ring. The specific preparation process steps are as follows:

[0030] ①First, in a 750 kg intermediate frequency induction furnace, using scrap steel, ferrochromium, ferromolybdenum and ferrotungsten as raw materials, mixed heating and melting into high-speed steel molten steel. The chemical composition and mass fraction of molten HSS in the furnace are controlled at 0.34%C, 6.26%Cr, 0.67%Mn, 4.35%Si, 0.27%Al, 8.84%W, 2.02%Mo, 0.024%S, 0.029%P, The remaining Fe; heated to 1628 ℃, and then added FeTi70 baked at 750 ℃ ​​for 120 minutes (the chemical composition and mass fraction of FeTi70 are 71.83% Ti, 1.61% A1, 0.43% Si, 0.006% S, 0.010% P, the remaining FeTi70 The amount of FeTi70 added accounts for 4.5% of the mass fraction of molten steel in the furnac...

Embodiment 3

[0034] A boron-added high-speed steel roll ring and a method for preparing the same. The low-priced boron element is added to replace the expensive vanadium element, thereby reducing the cost of the high-speed steel roll ring. The specific preparation process steps are as follows:

[0035]①First, in a 1000kg medium frequency induction furnace, use scrap steel, ferrochromium, ferromolybdenum and ferrotungsten as raw materials, mix and heat to melt into high-speed steel molten steel. After the molten steel is melted, add ferrosilicon, ferromanganese and metal aluminum in turn, The chemical composition and mass fraction of molten HSS in the furnace are controlled at 0.30%C, 6.17%Cr, 0.75%Mn, 4.28%Si, 0.33%Al, 8.70%W, 2.19%Mo, 0.028%S, 0.034%P, The remaining Fe; heated to 1623°C, and then added FeTi70 baked at 740°C for 130 minutes (the chemical composition and mass fraction of FeTi70 were 71.65% Ti, 1.91% A1, 0.26% Si, 0.007% S, 0.011% P, the remainder The amount of FeTi70 added ...

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Abstract

A boron-added high-speed steel roll ring and a preparation method thereof belong to the technical field of iron and steel production. The molten steel is smelted in an intermediate frequency induction furnace. First, in the intermediate frequency induction furnace, scrap steel, ferrochrome, ferromolybdenum and ferrotungsten are used as raw materials, mixed and heated to melt into high-speed steel molten steel. After the molten steel is melted, ferrosilicon, ferromanganese and metal are added in sequence. Aluminum, and the main chemical composition of the high-speed steel molten steel in the furnace is controlled at 6.07-6.26% Cr, 8.61-8.84% W, 2.02-2.29% Mo, 0.27-0.38% Al, the balance Fe, and then add ferro-titanium and ferro-boron , All melted and poured into a roll ring on a centrifuge. After quenching and tempering, the roll ring has high hardness and good wear resistance, and the popularization and use has a good effect.

Description

technical field [0001] The invention discloses a high-speed steel roll ring and a preparation method thereof, particularly relates to a boron-added high-speed steel roll ring and a preparation method thereof, and belongs to the technical field of iron and steel production. Background technique [0002] The roll ring has a simple production process, and the roll core is usually made of high-strength steel. Therefore, the combined roll formed by the combination of the roll ring and the roll core has been widely used in steel production. The combined roll has the characteristics of high core strength and good fracture resistance in use. Commonly used roll ring materials are bainitic ductile iron and high chromium cast iron. Chinese invention patent CN110819888A discloses a high-nickel bainite centrifugal composite roll ring, which is characterized in that: the outer layer of the roll ring is made of high-nickel bainite alloy ductile iron, the transition layer of the roll ring ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/06C22C38/04C22C38/34C22C38/06C22C38/22C22C38/28C22C38/32B22D1/00B22D13/04B22D27/02C21D9/40
CPCC22C33/06C22C38/04C22C38/34C22C38/06C22C38/22C22C38/28C22C38/32B22D1/00B22D13/04B22D27/02C21D9/40Y02P10/20
Inventor 张政龙
Owner 安徽环渤湾高速钢轧辊有限公司