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A kind of manufacturing method of speed skating blade material

A manufacturing method and technology for ice skating blades, which can be used in transportation and packaging, metal processing equipment, etc., can solve problems such as toughness and hardness that cannot be well matched, and achieve the effects of low cost, improved sharpening cycle, and simple ingredients.

Active Publication Date: 2020-12-22
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to prepare a high-strength, high-toughness and high-hardness speed skating blade material to solve the problem that the toughness and hardness of the existing blade materials cannot be well matched

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Preparation of 2mm thick slab material for skates

[0015] The first step is to use gas atomization technology to prepare a spherical metal with a mass ratio of C: 0.7%; Mn: 0.2%; Cr: 15%; Co: 0.5%; N: 0.1%; O: 0.004%, and the balance is Fe. The atomization atmosphere of the powder is nitrogen atmosphere, and then the prepared powder is successively passed through sieves of 50 mesh and 500 mesh, and the particle size range of the powder obtained at this time is 25-270 μm. In the second step, the powder is packed into a cuboid-shaped No. 45 steel ladle with a thickness of 2 mm, and then vacuumed to 10 -3 Pa, then put the sheath in a hot isostatic pressing furnace for sintering, the sintering temperature is 1050°C, the sintering pressure is 100MPa, the sintering time is 90min, and finally the sintered block is machined to remove the sheathing material on the surface . In the third step, the sintered body obtained in the second step is hot-rolled at a temperature of 1050...

Embodiment 2

[0017] Preparation of 3mm thick slab material for skates

[0018] The first step is to use gas atomization technology to prepare a spherical metal with a mass ratio of C: 0.8%; Mn: 0.8%; Cr: 16%; Co: 1%; N: 0.2%; O: 0.004%, and the balance is Fe. The atomization atmosphere of the powder is nitrogen atmosphere, and then the prepared powder is successively passed through sieves of 50 mesh and 500 mesh, and the particle size range of the powder obtained at this time is 25-270 μm. In the second step, the powder is packed into a cuboid-shaped No. 45 steel ladle with a thickness of 2 mm, and then vacuumed to 10 -3 Pa, then put the sheath in a hot isostatic pressing furnace for sintering, the sintering temperature is 1150°C, the sintering pressure is 120MPa, the sintering time is 90min, and finally the sintered block is machined to remove the sheathing material on the surface . In the third step, the sintered body obtained in the second step is hot-rolled at a temperature of 1100° ...

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Abstract

The invention discloses a method for manufacturing speed skating blade materials, which belongs to the field of metal materials. The present invention adopts gas atomization pulverizing technology to prepare mass ratio as C: 0.7-1.0%; Mn: 0.6-0.8%; Cr: 14-16%; Co: 0.5-1%; N: 0.1-0.2%; O< 0.005%, the ratio of Co to N is 5:1, and the balance is Fe spherical metal powder. The particle size of the powder is controlled within the range of 25-270 μm; the powder is packed into a rectangular carbon steel sheath and then vacuumed to 10 ‑3 After Pa is placed in a hot isostatic pressing furnace for sintering and densification, the sintered densified block is machined to remove the carbon steel ladle on the surface, and then hot rolled into a slab. The temperature of the hot rolling is 1050°C‑1100°C ℃, the thickness of the hot-rolled slab is 2-3mm; the hot-rolled slab is quenched and tempered to obtain a speed skating skate slab material with satisfactory performance, and then cut according to needs, and the surface is polished to obtain speed skating Knife. The invention has simple process and low cost, and is suitable for batch production.

Description

technical field [0001] The invention belongs to the field of metal materials and relates to a method for manufacturing speed skating blade materials. Background technique [0002] Ice skates are the foundation of ice sports. For speed skating, the structure, shape, and mechanical properties of ice skates have a great impact on improving sports performance. Among them, the performance and quality of the steel used for ice skates directly determine the performance and life of the ice skates. Speed ​​skating requires ice skates to have high strength and toughness, as well as considerable wear resistance and small surface roughness. Although researchers have modified and strengthened the skates from multiple angles to improve their overall performance, including surface modification and changing the arc, but from the perspective of application effects, the performance of the speed skating skates is still not complete due to the low performance of the main body material of the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/30C22C38/04C22C33/02B22F1/00B22F3/15B22F3/18B22F3/24C21D1/18
CPCC22C38/30C22C38/04C22C38/001C22C38/002C22C33/0207C22C33/0285B22F3/15B22F3/18B22F3/24C21D1/18B22F2003/248B22F2999/00B22F1/05B22F1/065B22F2201/20
Inventor 任淑彬赵洋曲选辉
Owner UNIV OF SCI & TECH BEIJING