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One-time cladding preparation method of impact-resistant high-hardness laser cladding layer

A technology of laser cladding and high hardness, applied in the direction of coating, metal material coating process, etc., can solve the problems of inability to be popularized and applied on a large scale, low efficiency of laser cladding technology, increase of product manufacturing cost, etc., to achieve a suitable large-scale Promotion, significant economic benefits, and high production efficiency

Active Publication Date: 2021-12-21
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this process requires two laser claddings, compared with traditional processes such as surfacing welding, spray welding, and plasma welding, the efficiency of laser cladding technology itself is very low, and this process will significantly reduce production efficiency. Increased product manufacturing costs, unable to be widely used in practice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare the alloy powder for the outer layer, and its mass percentage composition is: Mo: 3.8%, B: 0.8%, Cr: 16%, C: 0.3%, Si: 1.0%, Cr3C2: 8.5%, and the balance is Fe. The alloy powder for the inner layer is prepared, and the mass percentage of the alloy powder for the inner layer is composed of: Mo: 3.8%~4.2%, B: 0.8%, Cr: 16%, C: 0.3%, Si: 1.0%, the balance is Fe. Each component of the alloy powder for the inner layer and the outer layer is a powder with a purity greater than 99.9%, and a particle size of 135-325 mesh.

[0025] A primary cladding preparation method for an impact-resistant high-hardness laser cladding layer, further comprising the following steps:

[0026] (1) Use industrial alcohol to clean the surface of the substrate to be clad to remove oil and other impurities;

[0027] (2) Install the base material on the laser CNC machine tool, apply ink on the surface of the base material, and let it dry;

[0028] (3) The alloy powder is preset in the gravi...

Embodiment 2

[0034] Prepare the alloy powder for the outer layer, and its mass percentage composition is: Mo: 3.8%~4.2%, B: 1.1%, Cr: 18%, C: 0.6%, Si: 2.0%, Cr3C2: 9.5%, and the balance is Fe . Prepare the alloy powder for the inner layer. In terms of weight percentage, the mass percentage of the alloy powder for the inner layer is composed of: Mo: 4.2%, B: 1.1%, Cr: 18%, C: 0.6%, Si: 2.0%, The balance is Fe. Each component of the alloy powder for the inner layer and the outer layer is a powder with a purity greater than 99.9%, and a particle size of 135-325 mesh.

[0035] A primary cladding preparation method for an impact-resistant high-hardness laser cladding layer, further comprising the following steps:

[0036] (1) Use industrial alcohol to clean the surface of the substrate to be clad to remove oil and other impurities;

[0037] (2) Install the base material on the laser CNC machine tool, apply ink on the surface of the base material, and let it dry;

[0038] (3) The alloy powd...

Embodiment 3

[0044] The alloy powder for the outer layer is prepared, and its mass percentage composition is: Mo: 3.9%, B: 1.1%, Cr: 18%, C: 0.5%, Si: 1.0%, Cr3C2: 8.5%, and the balance is Fe. Prepare the alloy powder for the inner layer. In terms of weight percentage, the mass percentage of the alloy powder for the inner layer is composed of: Mo: 4.2%, B: 1.1%, Cr: 18%, C: 0.6%, Si: 2.0%, The balance is Fe. Each component of the alloy powder for the inner layer and the outer layer is a powder with a purity greater than 99.9%, and a particle size of 135-325 mesh.

[0045] A primary cladding preparation method for an impact-resistant high-hardness laser cladding layer, further comprising the following steps:

[0046] (1) Use industrial alcohol to clean the surface of the substrate to be clad to remove oil and other impurities;

[0047] (2) Install the base material on the laser CNC machine tool, apply ink on the surface of the base material, and let it dry;

[0048] (3) The alloy powder is...

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Abstract

The invention discloses a primary cladding preparation method for an impact-resistant high-hardness laser cladding layer, which belongs to the technical field of surface engineering. Alloy powders for the outer layer and the inner layer are respectively prepared, and two sets of gravity powder feeding systems are used to preset the alloy powder. One set of gravity powder feeding system conveys the alloy powder for the inner layer. The preset thickness of the alloy powder is 0.5~0.8mm. The second set of gravity powder feeding system conveys the alloy powder for the outer layer. With the movement of the laser head, the second set of gravity powder feeding system The alloy powder for the outer layer conveyed by the system covers the alloy powder for the inner layer that has been preset. The preset thickness of the alloy powder for the outer layer is 1.5~1.8mm. The total is 2.2~2.4mm; laser cladding is carried out; the cladding layer prepared by one-time cladding using the method of this application has excellent impact resistance while ensuring high hardness, high production efficiency, and is suitable for large-scale promotion. economic benefits.

Description

technical field [0001] The invention relates to the technical field of surface engineering, in particular to a primary cladding preparation method of an impact-resistant high-hardness laser cladding layer. Background technique [0002] The high-hardness laser cladding layer is the key to the preparation of high-hardness and high wear-resistant linings. Using laser cladding technology, alloy cladding layers with high hardness and excellent wear resistance can be prepared by adding wear-resistant hard phases to alloy powders. However, hardness and impact resistance are often a pair of contradictions. If the hardness is too high, the impact resistance decreases significantly. In many working conditions, the cladding alloy layer is required not only to have high hardness, but also to have excellent impact resistance. How to solve this pair of contradictions has become one of the problems that laser application engineers focus on in engineering practice. In practice, engineers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C38/22C22C38/32C22C38/02
CPCC23C24/103C23C24/106C22C38/22C22C38/32C22C38/02
Inventor 付宇明刘绍峰郑丽娟
Owner YANSHAN UNIV
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