Wear-resistance medicine core composition, wear-resistance welding wire and preparation method and application thereof

A composition and drug core technology, applied in the field of wear-resistant materials, can solve the problems of low production efficiency, long cycle, and inability to adapt, and achieve the effects of preventing oxidation, reducing welding thermal stress, and matching linear expansion coefficients

Active Publication Date: 2020-04-10
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the brazed diamond coating is heated in a furnace, the production efficiency is low, and the required cycle is long, which cannot meet the needs of rapid replacement of diamond-coated wear-resistant parts in service process industrial equipment.

Method used

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  • Wear-resistance medicine core composition, wear-resistance welding wire and preparation method and application thereof
  • Wear-resistance medicine core composition, wear-resistance welding wire and preparation method and application thereof
  • Wear-resistance medicine core composition, wear-resistance welding wire and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The preparation of embodiment 1 wear-resistant welding wire

[0073] 1 # Wear-resistant wire

[0074] The wear-resistant drug core composition includes components: 1.5wt.% of surface-activated diamond particles, 5wt.% of niobium oxide, 5wt.% of molybdenum oxide, and the balance of nickel-based alloy powder.

[0075] Sheath: Pure Nickel.

[0076] Surface activation method of diamond particles:

[0077] (1) Alkali treatment of diamond particles:

[0078] The alkali solution is 5g / L, 90°C sodium hydroxide solution, and the diamond particles are placed in the alkali solution for ultrasonic treatment; the ultrasonic conditions are: 30kHz ultrasonic vibration for 25min;

[0079] Wash with deionized water until the pH is neutral, and dry at 70°C;

[0080] (2) Acid treatment of diamond particles:

[0081] The acid solution is a nitric acid solution with a mass fraction of 20%, the diamond particles obtained in step (1) are placed in the acid solution and boiled for 20 m...

experiment example 1

[0100] Experimental Example 1 Surface Morphology and Brazing Coating Application of Wear-resistant Welding Wire

[0101] Characterize the surface morphology of brazing coating with PhenomXL type scanning electron microscope (SEM), the result is as follows figure 2 as shown, figure 2 Among them, the surface of the coating obtained by brazing is uniform and free of cracks, and the diamond particles are embedded in the cladding metal. The wettability of the cladding metal to the diamond particles is good without cracking.

[0102] With the 1 prepared in embodiment 1 # ~5 # Wear-resistant welding wire, used for surfacing welding on the surface of 10mm thick Q235 steel plate, the protective atmosphere of surfacing welding is argon, the dew point is -55 ℃, the welding process parameters are as follows: welding polarity is DC reverse connection, welding current is 300A ~ 480A, The welding voltage is 23V ~ 35V, and the welding overlap is 50%.

[0103] With embodiment 1 in 1 # ~...

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Abstract

The invention relates to a wear-resistance medicine core composition, a wear-resistance welding wire and a preparation method and application thereof. The wear-resistance medicine core composition comprises a wear-resistance material and the balance of a filling material; the wear-resistance material is 0.6-10 wt.% of the wear-resistance medicine core composition; the wear-resistance material comprises diamond particles; the filling material comprises transition metal oxide powder and nickel base alloy powder; and the transition metal oxide powder is 12-65 wt.% of the filling material. The wear-resistance medicine core composition uses the diamond particles as wear-resistance filling materials to form wear-resistance coating layers during welding or braze coating; and transition metal oxides are used as the filling material, so that the heat loss of diamond is reduced, the brazing activity is improved, and meanwhile, the linear expansion coefficient of clad metal is reduced.

Description

technical field [0001] The invention relates to the field of wear-resistant materials, in particular to a wear-resistant flux core composition, a wear-resistant welding wire and a preparation method and application thereof. Background technique [0002] Wear-resistant surfacing welding is a process of depositing wear-resistant materials on the surface of workpieces by welding. Its purpose is not to realize the connection between workpieces, but to obtain good wear resistance on the surface of workpieces. Stack metal layers to increase the service life of weldments, save manufacturing and maintenance costs, shorten the time for repairing and replacing key components, and reduce the loss of downtime and production stoppages, thereby improving production efficiency and reducing production costs. [0003] Carbide (such as tungsten carbide, chromium carbide, titanium carbide, etc.) is often used as the hard phase in the surfacing metal to improve the wear resistance of the surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K35/368B23K35/30B23K35/14B23K35/40B23K1/00B23K35/38
CPCB23K1/0008B23K35/0227B23K35/3033B23K35/3601B23K35/368B23K35/383B23K35/406
Inventor 裴夤崟秦建张冠星马佳于新泉李秀朋李胜男
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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