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Preparation method of high-performance speed skating ice skate blade

A high-performance, blade technology, applied in the field of metal materials, which can solve the problems of short service life of skating blades

Active Publication Date: 2021-12-10
UNIV OF SCI & TECH BEIJING +1
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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 skate blade with strong toughness, wear resistance, and low friction with the ice surface, so as to realize efficient driving of the skate and solve the problem of short service life of the skate blade

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Preparation of a speed skating blade with an overall thickness of 1.2 mm and a nitriding layer thickness of 0.12 mm on the blade portion

[0021] 1) The mass percentages prepared by vacuum air atomization powder making technology are C: 1.25%; Si: 0.4%; Mn: 0.7%; Cr: 5%; Mo: 5%; V: 5%; Co: 5%; W : 5%; O ≤ 0.005%; N: 0.04%, the balance is spherical metal powder of Fe, the particle size range of the powder is 10-250μm;

[0022] 2) Put the powder into a carbon steel sheath and carry out hot isostatic pressing sintering to obtain a hot isostatic pressing ingot. The sintering temperature is 1130°C, the sintering pressure is 80MPa, and the holding time is 2 hours;

[0023] 3) The hot isostatic pressing ingot is forged and billeted, and then hot-rolled into a strip. The starting temperature of forging and hot rolling is 1150°C, and the termination temperature is 900°C. The thickness of the hot-rolled strip is 1.35mm and the width is 11mm ;

[0024] 4) The hot-rolle...

Embodiment 2

[0027] Example 2 Preparation of a speed skating blade with an overall thickness of 1.1 mm and a nitriding layer thickness of 0.11 mm on the blade portion

[0028] 1) The mass percent of C: 1.30%; Si: 0.5%; Mn: 1.00%; Cr: 5.2%; Mo: 5.2%; V: 5.2%; Co: 5.2%; W : 5.2%; O ≤ 0.005%; N: 0.05%, the balance is a spherical metal powder of Fe, wherein the particle size of the powder is in the range of 10-250μm micron, the mass ratio of Cr, Mo W, Co and V Cr:Mo:W :Co:V=1:1:1:1:1;

[0029] 2) Put the powder into a carbon steel sheath and carry out hot isostatic pressing sintering to obtain a hot isostatic pressing ingot. The sintering temperature is 1150°C, the sintering pressure is 90MPa, and the holding time is 2.5 hours;

[0030]3) The hot isostatic pressing ingot is forged and billeted, and then hot-rolled into a strip. The starting temperature of forging and hot rolling is 1150°C, and the termination temperature is 900°C. The thickness of the hot-rolled strip is 1.40mm and the width ...

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Abstract

The invention discloses a preparation method of a high-performance speed skating ice skate blade material, and belongs to the field of metal materials. The preparation method comprises the following steps that firstly, spherical metal powder with the mass ratio of 1.20% to 1.30% of C, 0.3% to 0.5% of Si, 0.65% to 1.00% of Mn, 4.8% to 5.2% of Cr, 4.8% to 5.2% of Mo, 4.8% to 5.2% of V, 4.8% to 5.2% of Co, 4.8% to 5.2% of W, O less than or equal to 0.005%, 0.03% to 0.05% of N and the balance Fe is prepared by adopting a vacuum gas atomization powder preparation technology, 0.3 to 0.5 percent of Si; mn: 0.65 to 1.00%; 4.8 to 5.2 percent of Cr; 4.8% to 5.2% of Mo; v: 4.8 to 5.2%; 4.8% to 5.2% of Co; 4.8% to 5.2% of W; o < = 0.005%; wherein the particle size range of the powder is 10-250 microns, then hot isostatic pressing sintering densification is carried out to obtain a hot isostatic pressing ingot, then forging cogging and hot rolling are carried out on the hot isostatic pressing ingot to obtain a plate blank with a certain thickness, then welding is carried out on the plate blank and a knife back material with the same thickness to obtain a bimetal blade blank; and then performance heat treatment is carried out, then the plate blank subjected to heat treatment is machined into a semi-finished product bimetallic blade with a required size, and finally, glow particle nitriding treatment is carried out on a cutting edge part of the bimetallic blade to form a carbonitride layer with the thickness of 0.11-0.12 mm on the surface. The ice skate blade prepared by the method has excellent wear resistance and toughness; and meanwhile, the friction coefficient with the ice surface is lower, and the movement efficiency can be further improved.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a preparation method of a high-performance speed skating blade. Background technique [0002] The skating process of athletes is a complex process involving multiple factors such as pressure bearing, friction and wear. The performance, life and reliability of skates have an important impact on athletes' exercise efficiency. The ice skates are mainly composed of several parts such as a blade, a knife holder, and a knife tube, wherein the blade is usually a bimetallic blade, which is composed of a blade back with high strength and toughness and a blade with high wear resistance and high toughness. During the sliding process, the blade rubs against the ice surface at high speed, and bears the effect of relatively large friction force for a long time. After using the skate for a period of time, its cutting edge will become blunt. At this time, the effective support ability of the athlet...

Claims

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Application Information

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IPC IPC(8): B22F3/15B22F3/17B22F3/18B22F3/24B22F7/08B22F9/08C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C23C8/38
CPCB22F9/082B22F3/15B22F3/17B22F3/18B22F3/24B22F7/08C23C8/38C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C22C38/001B22F2003/248B22F2003/247Y02P10/20
Inventor 任淑彬王钢黄玺章赵洋曲选辉
Owner UNIV OF SCI & TECH BEIJING
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