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High-wear-resistance cermet coating

A cermet coating and cermet technology, which is applied in the field of wear-resistant steel, can solve the problems that the hardness needs to be further improved, the ion implantation tungsten infiltration process is complicated, and the production efficiency is low, so as to reduce the friction coefficient, reduce the cost, and reduce the cost Effect

Inactive Publication Date: 2016-05-25
苏州范德雅特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process of ion implantation and infiltration of tungsten is complicated, high in cost and low in production efficiency.
[0004] The Chinese invention patent with the publication number CN103205639A discloses a loader shovel blade and its preparation method. By adding a variety of alloying elements and a special preparation process, the hardness of the shovel blade steel can reach above 50HRC, but it is used for shoveling gravel When working with materials such as blocks, its hardness needs to be further improved. At the same time, the friction coefficient of steel is relatively high (using Si 3 N 4 The ball is used as a pair of grinding pairs, and its friction coefficient can reach 0.9), and it wears faster when it is used in shoveling and digging gravel and other materials.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] Adopt No. 45 steel to prepare a shovel blade with a thickness of 15mm, and prepare a 10wt.% Ni-based alloy with a thickness of 5mm on the surface to coat a high wear-resistant cermet coating of 90wt.% Si-Al-C-N amorphous particles to obtain a 25mm thick The shovel blade with high wear-resistant cermet coating; the high wear-resistant shovel edge cermet coating is prepared according to the following procedures:

[0024] 1) In terms of weight percentage, Ni-based alloy powder: 10wt.%, Si-Al-C-N nano-amorphous particles: 90wt.%, after mixing, put it into a high-energy ball mill for ball milling for 2 hours to form a cermet powder slurry ; Among them, the weight percentage of elements in Ni-based alloy powder: Ni: 50%, Fe: 33%, Cr: 10%, Mn: 5.434%, Si: 1%, C: 0.5%, B: 0.006%, P: 0.04 %, S: 0.02%, powder particle size 35μm, Si-Al-C-N amorphous particle size 18μm.

[0025] 2) Evenly coat the cermet powder slurry on the surface of the spatula blade with a coating thickness of...

Embodiment 2

[0031] Prepare a 1mm thick 15wt.% Ni-based alloy coated 85wt.% Si-Al-C-N amorphous particle high wear-resistant cermet coating on the surface of a 30mm thick SHSC-3 spatula developed by Komatsu Corporation in Japan to obtain a 32mm thick The shovel blade with high wear-resistant cermet coating; the high wear-resistant shovel edge cermet coating is prepared according to the following procedures:

[0032] 1) In terms of weight percentage, Ni-based alloy powder: 15wt.%, Si-Al-C-N nano-amorphous particles: 85wt.%, after mixing, put it into a high-energy ball mill for ball milling for 2 hours to form a cermet powder slurry ; Among them, the weight percentage of elements in Ni-based alloy powder: Ni: 60%, Fe: 20%, Cr: 18%, Mn: 4%, Mo: 1.25%, Si: 0.5%, C: 0.2%, B: 0.005 %, P: 0.03%, S: 0.015%, powder particle size 30μm, Si-Al-C-N amorphous particle size 12μm.

[0033] 2) Evenly coat the cermet powder slurry on the surface of the spatula blade with a coating thickness of 0.3mm;

[0...

Embodiment 3

[0039] Using the Chinese invention patent with publication number CN103205639A to prepare a 35mm thick spatula blade, prepare a 10mm thick 20wt.% Ni-based alloy coated 80wt.% Si-Al-C-N amorphous particle high wear-resistant cermet coating on the surface, Obtain a 55mm thick shovel blade with a high wear-resistant cermet coating; the high wear-resistant shovel edge cermet coating is prepared according to the following procedures:

[0040]1) In terms of weight percentage, Ni-based alloy powder: 20wt.%, Si-Al-C-N nano-amorphous particles: 80wt.%, after mixing, put it into a high-energy ball mill for ball milling for 2 hours to form a cermet powder slurry ; Among them, the weight percentage of elements in Ni-based alloy powder: Ni: 55%, Fe: 26%, Cr: 14%, Mn: 2.4%, Mo: 2.267%, Si: 0.2%, C: 0.1%, B: 0.003 %, P: 0.02%, S: 0.01%, powder particle size 35 μm, Si-Al-C-N amorphous particle size 15 μm.

[0041] 2) Evenly coat the cermet powder slurry on the surface of the spatula blade wi...

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Abstract

The invention provides a high-wear-resistance cermet coating which comprises 10-20 wt.% of Ni-base alloy and 80-90 wt.% of Si-Al-C-N amorphous particles. The invention also provides a laser cladding preparation method of the high-wear-resistance cermet coating. The Si-Al-C-N superhard amorphous particles coated with the Ni-base alloy are used as the cermet coating for perching knife blades; the hardness of the coating can reach HV2000 or above, and the friction factor is lower than 0.4; the laser cladding preparation technique does not lower the strength and toughness of the steel; and by using the cermet coating, plain steel has favorable compatibility among hardness, strength, toughness and friction factor, and has favorable service performance and very long service life. By using the Ni-base alloy as the laser cladding coating material of the Si-Al-C-N amorphous particles, so that the cost of the wear-resistant special steel is obviously lowered.

Description

technical field [0001] The invention relates to the technical field of wear-resistant steel, in particular to a high wear-resistant cermet coating and a preparation method thereof. Background technique [0002] When the shovel blade of the loader cuts hard materials such as sand and gravel, strong friction and impact occur. Therefore, the spatula blade is required to have good strength, toughness and hardness matching. [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. The Chinese invention patent with the publication number CN1669726A disclose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C29/04C22C19/05
CPCC23C24/103C22C19/058C22C29/04
Inventor 华云峰李海亮
Owner 苏州范德雅特新材料科技有限公司
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