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High-hardness additive manufacturing tool

An additive manufacturing, high hardness technology, applied in metal material coating technology, coating, metal processing and other directions, can solve the increase of high-end tool manufacturing cost, difficult to meet the high-end tool high hardness, high wear resistance and other performance requirements and other problems to achieve the effect of enhancing market competitiveness, reducing production costs and reducing import volume

Pending Publication Date: 2017-08-08
YANGJIANG KNIFESCISSOR HARDWARE RES INSTITUTION OF IND TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, stainless steel is generally selected as the production material of knives in our country. After the knives are stamped and formed, the strength, hardness and wear resistance of the knives are improved through heat treatment technology. It is becoming more and more difficult to meet people's requirements for high-end knives with high hardness and high wear resistance. Many domestic companies use foreign high-quality steel, such as Japanese lamellar steel, to manufacture high-performance knives, but this also increases the production of high-end knives. cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Taking the dagger as an example, the production of the knife is described as follows:

[0020] The iron-based alloy powder is ball-milled, dried and placed in a powder feeder. The iron-based alloy powder is composed of 0.6% carbon, 23% chromium, 1% silicon, 1% boron, 6.5% nickel, and 1% manganese by mass percentage. , molybdenum 0.2%, iron 66.7%, powder size range is 125um.

[0021] The material of the blade 2 is 3Cr13, the thickness is 2.5mm, and the blade 3 of the blade 2 is polished to remove rust, and then the surface of the blade is cleaned, and then the blade is fixed with a special clamp; then the edge line 7 of the blade 3 of the blade 2 is The laser performs additive manufacturing by means of coaxial powder feeding to prepare the additive manufacturing strengthening layer 4. The thickness of the prepared additive manufacturing strengthening layer 4 is 2.3mm. The additive manufacturing process parameters are laser power 1.5KW, scanning speed 25mm / s, The spot di...

Embodiment 2

[0026] The iron-based alloy powder is ball-milled and then dried and placed in a powder feeder. The iron-based alloy powder is composed of 1.5% carbon, 35% chromium, 2.5% silicon, 2% boron, 12% nickel and 2% manganese by mass percentage. , molybdenum 0.3%, iron 44.7%, powder size range is 275um.

[0027] The material of the blade 2 is 3Cr13, the thickness is 2.5mm, and the blade 3 of the blade 2 is polished to remove the rust, and then the surface oil of the blade 3 is cleaned, and then the blade is fixed with a special clamp; Additive manufacturing is carried out by using laser through coaxial powder feeding to prepare additive manufacturing strengthening layer 4, the prepared additive manufacturing strengthening layer 4 is 2.35mm, and the additive manufacturing process parameters are laser power 1.5KW, scanning speed 25mm / s, The spot diameter is 1.5mm, the powder feeding speed is 32g / min, the preheating temperature is 300°C, the postheating temperature is 200°C, the postheat...

Embodiment 3

[0032] The iron-based alloy powder is ball-milled, dried and placed in a powder feeder. The iron-based alloy powder is composed of 1.0% carbon, 28% chromium, 1.5% silicon, 1.2% boron, 10% nickel, and 1.5% manganese by mass percentage. , molybdenum 0.25%, iron 56.55%, the powder size range is 275um.

[0033] The material of the blade 2 is 3Cr13, the thickness is 2.5mm, and the blade 3 of the blade 2 is polished to remove the rust, and then the surface oil of the blade 3 is cleaned, and then the blade is fixed with a special clamp; Additive manufacturing is carried out by using laser through coaxial powder feeding to prepare additive manufacturing strengthening layer 4, the prepared additive manufacturing strengthening layer 4 is 2.35mm, and the additive manufacturing process parameters are laser power 1.5KW, scanning speed 25mm / s, The spot diameter is 1.5mm, the powder feeding speed is 32g / min, the preheating temperature is 300°C, the postheating temperature is 200°C, the posth...

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Abstract

The invention discloses a high-hardness additive manufacturing tool which comprises a tool handle, a tool body, a blade and an additive manufacturing strengthening layer. The additive manufacturing strengthening layer is prepared by adopting lasers at the cutting edge line position of the blade in a coaxial powder feed manner. Iron-based self-fluxing alloyed powder serves as a preparation material of the additive manufacturing strengthening layer and comprises, by mass percent, 0.6%-1.5% of carbon, 23%-35% of chromium, 1%-2.5% of silicon, 1%-2% of boron, 6.5%-12% of nickel, 1%-2% of manganese, 0.2%-0.3% of molybdenum and 44.7%-66.7% of iron, and the size range of the powder ranges from 125 micrometers to 275 micrometers. The high-hardness additive manufacturing tool has the beneficial effects that a reasonable additive manufacturing material ratio is adopted, after grinding and edging, the cutting edge hardness of the blade can reach HRC60 or above, the wear resistance of the tool can be obviously improved, the service life of the tool can be obviously prolonged, the import volume of high-end steel can be reduced, and the manufacturing cost of the tool can be reduced.

Description

technical field [0001] The invention belongs to the field of hardware knife and scissors manufacturing, and more specifically relates to a high-hardness additive manufacturing knife. Background technique [0002] At present, stainless steel is generally selected as the production material of knives in our country. After the knives are stamped and formed, the strength, hardness and wear resistance of the knives are improved through heat treatment technology. It is becoming more and more difficult to meet people's requirements for high-end knives with high hardness and high wear resistance. Many domestic companies use foreign high-quality steel, such as Japanese lamellar steel, to manufacture high-performance knives, but this also increases the production of high-end knives. cost. [0003] Additive manufacturing is used to prepare a strengthening layer on the surface of the blade of ordinary stainless steel knives. After cutting, the hardness of the blade can reach more than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/58C22C38/54C22C38/02C22C38/44C22C30/00B26B9/00
CPCB26B9/00C22C30/00C22C38/02C22C38/44C22C38/54C22C38/58C23C24/103
Inventor 张瑞华许广伟尹燕屈岳波栗子林路超刘鹏宇
Owner YANGJIANG KNIFESCISSOR HARDWARE RES INSTITUTION OF IND TECH
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