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High-tungsten high-abrasion-resistant high-speed steel composite roller and preparation method thereof

A technology of composite rolls and high-speed steel, which is used in manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of unsatisfactory high temperature wear resistance of rolls, unstable use of rolls, and reduced wear resistance of rolls.

Active Publication Date: 2016-07-13
枣庄瑞兴机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current production of centrifugal casting high-speed steel composite rolls generally has serious segregation of alloy elements, unstable use of the rolls, and unsatisfactory high-temperature wear resistance of the rolls. Although adding an

Method used

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  • High-tungsten high-abrasion-resistant high-speed steel composite roller and preparation method thereof
  • High-tungsten high-abrasion-resistant high-speed steel composite roller and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-tungsten high-wear-resistant high-speed steel composite roll is composed of a roll core (nodular iron) 1, a composite roll outer layer (high tungsten high-speed steel) 2 and a composite roll transition layer (nodular iron) 3. The specific preparation process steps are:

[0023] ① Mix and heat ferrotungsten, ferrochrome, ferromolybdenum, ferrovanadium, steel scrap and recarburizer in a 1000 kg intermediate frequency induction furnace, adjust the chemical composition and mass fraction of molten steel before the furnace to 2.21%C, 6.77%W, 8.96% Cr, 4.20% V, 2.53% Mo, 0.40% Mn, 0.49% Si, 0.033% P, 0.028% S, the balance is Fe and its unavoidable impurity elements. When the temperature of molten steel rises to 1627°C, add The silicon-manganese-calcium-barium-aluminum alloy accounts for 0.52% of the mass fraction of molten steel in the furnace. The chemical composition and mass fraction of the silicon-manganese-calcium-barium-aluminum alloy are 15.70% Si, 23.89% Mn, 11.5...

Embodiment 2

[0027] A high-tungsten high-wear-resistant high-speed steel composite roll is composed of a roll core (nodular iron) 1, a composite roll outer layer (high tungsten high-speed steel) 2 and a composite roll transition layer (nodular iron) 3. The specific preparation process steps are:

[0028] ① Mix and melt ferrotungsten, ferrochrome, ferromolybdenum, ferrovanadium, steel scrap and recarburizer in a 750 kg intermediate frequency induction furnace, adjust the chemical composition and mass fraction of molten steel before the furnace to 2.48%C, 6.53%W, 8.63% Cr, 4.49% V, 2.76% Mo, 0.38% Mn, 0.60% Si, 0.038% P, 0.035% S, the balance is Fe and its unavoidable impurity elements. When the temperature of molten steel rises to 1604°C, add The silicon-manganese-calcium-barium-aluminum alloy accounts for 0.42% of the mass fraction of molten steel in the furnace. The chemical composition and mass fraction of the silicon-manganese-calcium-barium-aluminum alloy are 18.74% Si, 20.61% Mn, 12.73...

Embodiment 3

[0032] A high-tungsten high-wear-resistant high-speed steel composite roll is composed of a roll core (nodular iron) 1, a composite roll outer layer (high tungsten high-speed steel) 2 and a composite roll transition layer (nodular iron) 3. The specific preparation process steps are:

[0033] ① Mix and melt ferrotungsten, ferrochrome, ferromolybdenum, ferrovanadium, steel scrap and recarburizer in a 1000 kg intermediate frequency induction furnace, adjust the chemical composition and mass fraction of molten steel before the furnace to 2.31%C, 6.65%W, 8.74% Cr, 4.38% V, 2.67% Mo, 0.36% Mn, 0.71% Si, 0.029% P, 0.032% S, the balance is Fe and its unavoidable impurity elements. When the temperature of molten steel rises to 1617°C, add The silicon-manganese-calcium-barium-aluminum alloy accounts for 0.48% of the mass fraction of the molten steel in the furnace. The chemical composition and mass fraction of the silicon-manganese-calcium-barium-aluminum alloy are 16.84% Si, 22.10% Mn, ...

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Abstract

The invention belongs to the technical field of abrasion-resistant materials and discloses a high-tungsten high-abrasion-resistant high-speed steel composite roller and a preparation method thereof. The high-tungsten high-abrasion-resistant high-speed steel composite roller comprises a roller core, a composite roller outer layer and a composite roller transition layer, wherein the roller core and the composite roller transition layer are made from ductile iron, and the composite roller outer layer is made from high-tungsten high-speed steel. The preparation method includes: firstly, mixing, heating and melting ferrotungsten, ferrochromium, ferromolybdenum, ferrovanadium, waste steel and carburant in an electric furnace, regulating chemical compositions and mass fractions of the chemical compositions of liquid steel on the spot, and pouring the roller outer layer on a centrifuge, wherein the liquid steel comprises the chemical compositions, by weight, 2.2-2.5% of C, 6.5-6.8% of W, 8.6-9.0% of Cr, 4.2-4.5% of V, 2.5-2.8% of Mo, smaller than 0.45% of Mn, smaller than 0.76% of Si, smaller than 0.04% of P and smaller than 0.04% of S; secondly, pouring the transition layer; finally, filling the core to obtain the composite roller. The high-tungsten high-abrasion-resistant high-speed steel composite roller has excellent utilization effects after quenching and tempering treatment.

Description

technical field [0001] The invention discloses a high-speed steel composite roll and a preparation method thereof, in particular to a high-tungsten high-wear-resistant high-speed steel composite roll and a preparation method thereof, belonging to the technical field of wear-resistant materials. Background technique [0002] With the advent of advanced rolling mills and high-efficiency rolling technology, the rapid development of the steel rolling industry has been promoted, and at the same time, the roll manufacturing industry has been promoted to a new technical field. How to improve the service life of the roll to meet the needs of the rolling mill is a new challenge for the roll developers. topic. In recent years, with the efforts of roll developers, the application of high-speed steel materials to roll manufacturing has achieved breakthrough development. Because high-speed steel has high wear resistance and hardenability, especially its red hardness at high temperature,...

Claims

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Application Information

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IPC IPC(8): B22D19/16B22D13/00C22C37/10C22C37/04C22C38/12C22C38/18C22C38/04C22C38/02C22C38/08C21D9/38
CPCB22D13/00B22D19/16C21D9/38C22C37/04C22C37/10C22C38/005C22C38/02C22C38/04C22C38/08C22C38/12C22C38/18
Inventor 徐继亮符寒光
Owner 枣庄瑞兴机械制造有限公司
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