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A kind of highly wear-resistant shovel blade cermet coating and its preparation method

A metal-ceramic coating and metal-ceramic technology, applied in the field of wear-resistant steel, can solve the problems of complex ion implantation tungsten infiltration process, high cost, low production efficiency, etc., and achieve the effect of reducing wear and friction coefficient

Inactive Publication Date: 2016-01-20
北工(常熟)工业技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of ion implantation and infiltration of tungsten is complicated, high in cost and low in production efficiency.

Method used

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  • A kind of highly wear-resistant shovel blade cermet coating and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A shovel blade with a thickness of 15mm was prepared by No. 45 steel, and a high wear-resistant cermet coating with a thickness of 5mm and containing 10wt% (weight percent) Fe-based alloy and 90wt% Si-Al-C-N amorphous particles was prepared on the surface to obtain 25mm thick spatula blade with highly wear-resistant cermet coating. The highly wear-resistant shovel edge cermet coating is prepared according to the following procedures:

[0021] (a) In terms of weight percentage, after mixing 10wt% Fe-based alloy powder and 90wt% Si-Al-C-N nano-amorphous particles, put them into a high-energy ball mill for 2 hours to form a cermet powder slurry; where Fe-based The weight percentages of elements in the alloy powder are as follows: Fe: 50%, Ni: 30%, Cr: 15%, Mn: 3.434%, Si: 1%, C: 0.5%, B: 0.006%, P: 0.04%, S : 0.02%, Fe-based alloy powder particle size 35μm, Si-Al-C-N amorphous particle size 18μm; the powder slurry is evenly coated on the surface of the spatula blade, and ...

Embodiment 2

[0025] A 1mm thick and highly wear-resistant cermet coating containing 15wt% Fe-based alloy and 85wt% Si-Al-C-N amorphous particles was prepared on the surface of a 30mm thick SHSC-3 blade developed by Komatsu Corporation in Japan, and a 32mm thick strip was obtained. Spatula blades with highly wear-resistant cermet coating. The highly wear-resistant shovel edge cermet coating is prepared according to the following procedures:

[0026] (a) In terms of weight percentage, after mixing 15wt% Fe-based alloy powder and 85wt% Si-Al-C-N nano-amorphous particles, put them into a high-energy ball mill for 5 hours to form a cermet powder slurry; where Fe-based The weight percentages of elements in the alloy powder are as follows: Fe: 60%, Ni: 18%, Cr: 17%, Mn: 3%, Mo: 1.25%, Si: 0.5%, C: 0.2%, B: 0.005%, P : 0.03%, S: 0.015%, Fe-based alloy powder particle size 30μm, Si-Al-C-N amorphous particle size 12μm; cermet powder slurry is evenly coated on the surface of the blade, and the coati...

Embodiment 3

[0030] A 10mm thick and high wear-resistant cermet coating containing 20wt% Fe-based alloy coating and 80wt% Si-Al-C-N amorphous particles was prepared on the surface of a 35mm thick spatula to obtain a 55mm thick cermet with high wear resistance Coated spatula blade. The highly wear-resistant shovel edge cermet coating is prepared according to the following procedures:

[0031] (a) In terms of weight percentage, after mixing 20wt% Fe-based alloy powder and 80wt% Si-Al-C-N nano-amorphous particles, put them into a high-energy ball mill for half an hour to form a cermet powder slurry; where Fe-based The weight percentages of elements in the alloy powder are as follows: Fe: 55%, Ni: 24%, Cr: 13%, Ti: 2%; W: 1%; Mn: 2.5%, Mo: 2.167%, Si: 0.2%, C : 0.1%, B: 0.003%, P: 0.02%, S: 0.01%, Fe-based alloy powder particle size 35μm, Si-Al-C-N amorphous particle size 15μm; evenly coat the cermet powder slurry on the surface of the blade , coating thickness is 1.4mm;

[0032] (b) Place ...

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Abstract

The invention relates to a high-abrasion-resistance scraper knife edge metal ceramic coating and a preparation method thereof. The high-abrasion-resistance scraper knife edge metal ceramic coating is formed by cladding Fe-base alloy and Si-Al-C-N noncrystal particles at a high temperature; in parts by weight, the components are as follows: 10 to 20 percent of Fe-base alloy and 80 to 90 percent of Si-Al-C-N noncrystal particles. The preparation method comprises the following steps of (a) mixing the Fe-base alloy and the Si-Al-C-N noncrystal particles, grinding the mixture into metal ceramic powder slurry, and uniformly coating the surface of a scraper knife edge with the metal ceramic powder slurry; (b) placing the scraper knife edge which is coated with the metal ceramic powder slurry into a workpiece box which is protected by a nonoxidant atmosphere, heating and melting the metal ceramic powder slurry and covering the surface of the scraper knife edge with the melted metal ceramic powder slurry so as to form the high-abrasion-resistance ceramic coating. By adding the Si-Al-C-N noncrystal particles in the Fe-base alloy, on one hand, the hardness of the metal ceramic coating can be improved, and the hardness is more than HV2000; on the other hand, the friction coefficient of the metal ceramic coating can be reduced and lower than 0.45, so that the abrasion of the scraper knife edge in operation can be reduced.

Description

technical field [0001] The invention relates to the technical field of wear-resistant steel, in particular to a highly wear-resistant shovel blade edge cermet coating and a preparation method thereof. Background technique [0002] The shovel blade is a key part of the working mechanism in shoveling and digging construction machinery. It cuts materials (such as sand, stone, soil, slag, etc.) Matched strength, toughness and hardness. [0003] The NM360 wear-resistant steel series developed in my country or the IE0921 series approved by Caterpillar Company have a surface hardness of HRC39~47 after heat treatment. The high-silicon toughness and wear-resistant steel SHSC-3 developed by Japan's Komatsu has a surface hardness of more than HRC50 after heat treatment, but due to the addition of a large amount of silicon, the plasticity and toughness are reduced, and the machining performance of the steel plate is poor. [0004] The Chinese invention patent with the publication numb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C29/00
Inventor 华云峰姚栋嘉
Owner 北工(常熟)工业技术有限公司