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Preparation method for nickel-based abrasion-resistant cladding layer

A cladding layer, nickel-based technology, applied in the direction of coating, metal material coating process, etc., can solve problems such as workpiece surface wear, achieve the effect of improving hardness, good interface bonding performance, and solving unstable interface bonding

Inactive Publication Date: 2019-03-26
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a high wear-resistant cladding layer to solve the problem of serious wear on the surface of the workpiece

Method used

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  • Preparation method for nickel-based abrasion-resistant cladding layer
  • Preparation method for nickel-based abrasion-resistant cladding layer
  • Preparation method for nickel-based abrasion-resistant cladding layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In Example 1, NiCrBSi powder and elemental Nb powder are mixed according to the mass ratio of 94:6, wherein the particle size of NiCrBSi powder is 25-50 μm, the composition is shown in Table 1, and the purity of Ni, Cr, C, and Fe is 99%. , B. The purity of Si is 99.99%; the powder particle size of elemental Nb powder is 30-70 μm, and the purity is 99.99%. After uniform mechanical mixing, the cladding powder is obtained.

[0036] Table 1 NiCrBSi powder composition

[0037]

[0038] The main steps include: quenching and tempering 45 steel→surface grinding and degreasing treatment→preparing binder→mixing mixed powder and binder and coating on the surface of the substrate to obtain a prefabricated layer→argon tungsten argon tungsten on the prefabricated layer Arc cladding treatment to prepare Ni-based cladding layer.

[0039] Preparation of Ni-based cladding layer

[0040] The first step, powder preparation

[0041] Weigh 94g of NiCrBSi powder and 6g of Nb powder and...

Embodiment 2

[0060] In Example 2, NiCrBSi powder and Nb powder were used for powder preparation. The powder components of NiCrBSi powder and Nb powder remained unchanged, and only the mass ratio of the two powders was changed to 96:4. 96g of NiCrBSi powder and 4g of Nb powder were weighed and mixed by ball milling to prepare mixed powder for cladding. All the other steps are the same as in Example 1. The performance of the obtained cladding layer is close to that of Example 1.

Embodiment 3

[0062] In this embodiment 3, the powder composition described in embodiment 1 is adopted, and the mass ratio of NiCrBSi powder and Nb powder is 94:6, and the tungsten argon arc cladding current and scanning speed are adjusted, and the adjusted cladding process parameters are shown in the table 3 shown

[0063] Table 3 Tungsten argon arc cladding process parameter list

[0064]

[0065] All the other steps are the same as in Example 1. The performance of the obtained cladding layer is close to that of Example 1.

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Abstract

The invention provides a preparation method for a nickel-based abrasion-resistant cladding layer. The preparation method comprises the following steps that ball-milling mixing is conducted on NiCrBSipowder and elemental Nb powder, mixed powder is obtained and is mixed with binder composed of rosin and turpentine, then the surface of a substrate obtained through hardening and tempering treatment and surface cleaning is coated with the obtained mixture, and after drying, cladding is conducted through an argon tungsten-arc welding machine; and cooling is conducted after cladding, and the Ni-based cladding layer is obtained. metallurgical bonding between the cladding layer and the substrate is achieved in an argon tungsten-arc cladding mode, interface bonding strength is promoted, in addition, the NbC second phase is separated out in situ, the second phase is prevented from falling off from the substrate in the service process, and the cladding layer with high hardness and high abrasion resistance is prepared.

Description

technical field [0001] The invention relates to the field of metal material surface engineering, in particular to a preparation method of a nickel-based wear-resistant cladding layer. The invention adopts the tungsten argon arc cladding method to prepare a high-hardness and high wear-resistant cladding layer, which greatly improves the friction and wear performance of the workpiece. Therefore, the present invention is mainly applied to the fields of oil drilling equipment, railway transportation, piston rings and the like. Background technique [0002] Abrasion failure is one of the most important ways to cause workpiece failure and damage. Abrasion loses one-third of the world's primary energy. In my country, the annual economic loss due to abrasion accounts for a very large proportion, especially in metallurgy and mineral resource mining, automobiles and There are obvious wear and tear failure phenomena in railway transportation and other fields. Wear often brings safety ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/106
Inventor 董天顺刘利李国禄付彬国王冉冯阳
Owner HEBEI UNIV OF TECH
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