Preparation method of chromium-molybdenum-vanadium type speed skating ice skate blade material

A chromium-molybdenum-vanadium and preparation step technology is applied in the field of preparation of speed skating skating blade materials, and can solve problems such as toughness and hardness that cannot be well matched, and achieve the effects of high hardness, improved life, and high comprehensive performance.

Inactive Publication Date: 2020-06-16
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 speed skating blade material that takes into account toughness, stre

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] In the first step, the mass ratio of C: 2.3%; Mn: 0.08%; Si: 0.08%; Cr: 5.7%; Mo: 3.5%; V: 8.5%; Nb: 0.5%; Co: 1.5%; N: 0.05%; O: 0.004%, the balance is a spherical metal powder of Fe, the atomization atmosphere adopts a nitrogen atmosphere, and then the prepared powder is passed through 50 mesh and 325 mesh sieves successively, and the particle size of the powder obtained at this time is The range is 45-270 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 1080°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 1150°...

Embodiment 2

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

[0018] In the first step, the mass ratio of C: 2.7%; Mn: 0.07%; Si: 0.07%;; Cr: 6.0%; Mo: 4.0%; V: 9.0%; Nb: 1.0%; Co : 2.0%; N: 0.1%; O: 0.004%; the balance is a spherical metal powder of Fe, the atomization atmosphere adopts a nitrogen atmosphere, and then the prepared powder is successively passed through 50 mesh and 325 mesh sieves, and the powder obtained at this time The particle size range is 45-270μm. 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, and then put the sheath in a hot isostatic pressing furnace for sintering. The sintering temperature is 1230°C, the sintering pressure is 150MPa, and the sintering time is 110min. 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 subjected to hot rolling at a temperatur...

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Abstract

The invention discloses a preparation method of a chromium-molybdenum-vanadium type speed skating ice skate blade material, and belongs to the field of metal materials. The preparation method comprises the following steps that spherical metal powder comprising the components of, by mass, 2.3% to 2.7% of C, less than 0.1% of Mn, less than 0.1% of Si, 5.7% to 6.0% of Cr, 3.5% to 4.0% of Mo, 8.5% to9.0% of V, 0.5% to 1.0% of Nb, 1.5% to 2.0% of Co, 0.05% to 0.1% of N, less than 0.005% of O and the balance Fe, is prepared by adopting a gas atomization powder making technology, wherein the ratio of Nb to N is 10: 1 and the particle size of the powder is controlled within the range of 45-270 microns; the powder is loaded into a cuboid carbon steel can, then is subjected to vacuumizing to reach10<-3> Pa, and then is placed in a hot isostatic pressing furnace for sintering to achieve densification; the sintered and densified block body is machined to remove the carbon steel can on the surface, and then hot rolling is conducted to form a plate blank, wherein the hot rolling temperature is 1150-1200 DEG C, and the thickness of the hot-rolled plate blank is 2-3 mm; and quenching and tempering are carried out on the hot-rolled plate blank to obtain a speed skating ice skate blade plate blank material which meets the requirement in performance, then cutting is carried out according to therequirement, and the surface is ground to obtain a speed skating ice skate blade. The preparation method is simple in process, low in cost and suitable for mass production, and meanwhile the materialcan serve as figure and ice hockey ice skate blade materials by adjusting the performance by means of the adjustment of the heat treatment process.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a preparation method of a speed skating blade material. 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 the skate material to have a certain degree of rigidity 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 ...

Claims

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Application Information

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IPC IPC(8): B22F5/00B22F3/15B22F3/18B22F3/24B22F9/08C22C38/02C22C38/04C22C38/22C22C38/24C22C38/26C22C38/30C22C38/36
CPCB22F3/15B22F3/18B22F3/24B22F5/00B22F9/082B22F2003/185B22F2003/247B22F2003/248B22F2998/10C22C38/001C22C38/02C22C38/04C22C38/22C22C38/24C22C38/26C22C38/30C22C38/36
Inventor 任淑彬赵洋曲选辉
Owner UNIV OF SCI & TECH BEIJING
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