High-strength high-speed steel material for a screw tap

A high-strength, high-speed steel technology, applied in the field of high-strength high-speed steel materials for taps and their preparation, can solve the problems of increasing the production cost of high-speed steel tools, poor plastic deformation ability, and low yield, etc. Good strength and good crack resistance

Inactive Publication Date: 2021-02-02
江苏合一金属新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-speed steel is a hard-to-deform steel, with poor plastic deformation ability, easy to crack during processing, and low yield, which significantly increases the production cost of high-speed steel tools

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: A high-strength high-speed steel material for taps, the mass percentage of its composition is as follows, C: 0.7%; W: 4.65; Mo: 2.5%; Cr: 2.95%; V: 0.8%; Co: 60.5%%; B: 0.002; compound rare earth 5; the balance is Fe.

[0026] A method for preparing a high-strength high-speed steel material for a tap, comprising the steps of:

[0027] S1: Mix C, W, Mo, Cr, V, Co and Fe and put them into an electric arc furnace to heat and melt at a temperature of 1500°C;

[0028] S2: After the mixture in S1 melts, adjust the temperature to 1000°C, then add B and compound rare earth, keep it for 6 hours, put it into a vacuum furnace for heating, the heating temperature is 950°C, keep it for 3-5 hours, then adjust the heating temperature to 1200°C , and then forged into a semi-finished product;

[0029] S3: Anneal the semi-finished product, and cool the vacuum furnace in S2 to 950°C through the cooling medium;

[0030] S4: Quenching the semi-finished product at a temperature...

Embodiment 2

[0035] Example 2: A high-strength high-speed steel material for taps, the mass percentage of its composition is as follows, C: 1.3%; W: 5.85; Mo: 2.5%; Cr: 3.25%; V: 1.2%; Co: 9.88%; B : 0.004%; composite rare earth 7%; the balance is Fe.

[0036] A method for preparing a high-strength high-speed steel material for a tap, comprising the steps of:

[0037] S1: Mix C, W, Mo, Cr, V, Co and Fe and put them into an electric arc furnace to heat and melt at a temperature of 1400°C;

[0038] S2: After the mixture in S1 is melted, adjust the temperature to 1000°C, then add B and compound rare earth, keep it for 5 hours, put it into a vacuum furnace for heating, the heating temperature is 950°C, keep it for 3 hours, adjust the heating temperature to 1100°C, and then Forging and molding to make semi-finished products;

[0039] S3: Anneal the semi-finished product, and cool the vacuum furnace in S2 to 900°C through the cooling medium;

[0040] S4: Quenching the semi-finished product at...

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PUM

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Abstract

The invention relates to the technical field of screw tap production, in particular to a high-strength high-speed steel material for a screw tap and a preparation method thereof. The high-strength high-speed steel material comprises the following ingredients in parts by mass: 0.7%-1.3% of C; 4.65%-5.85% of W; 2.5%-3.5% of Mo; 2.95%-3.25% of Cr; 0.8%-1.2% of V; 60.5%-9.88% of Co; 0.002%-0.004% of B; 5-7% of composite rare earth; and the balance of Fe. The high-strength high-speed steel material provided by the invention is high in strength, good in crack resistance and high in wear resistance and toughness.

Description

technical field [0001] The invention relates to the technical field of tap production, in particular to a high-strength high-speed steel material for a tap and a preparation method thereof. Background technique [0002] High-speed steel has the advantages of high hardness, high red hardness, and good toughness. It is widely used in the manufacture of high-speed cutting tools such as twist drills, taps, turning tools, and milling cutters. It is also used in high-load molds and special heat-resistant and wear-resistant parts. . However, high-speed steel is a kind of steel that is difficult to deform. Its plastic deformation ability is poor, it is easy to crack during processing, and the yield is not high, which significantly increases the production cost of high-speed steel tools. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-strength high-speed steel material for taps and a preparation method thereof, wh...

Claims

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Application Information

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IPC IPC(8): C22C38/22C22C38/24C22C38/30C22C38/32C22C33/04C21D1/26C21D1/18
CPCC21D1/18C21D1/26C22C33/04C22C38/005C22C38/22C22C38/24C22C38/30C22C38/32
Inventor 沈晨辉
Owner 江苏合一金属新材料科技有限公司
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