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Multi-component hot spraying flexible wire and preparation method thereof

A flexible wire, thermal spraying technology, applied in coating, fusion spraying, metal material coating process, etc., can solve the problems that affect the continuous spraying process, difficult to control the diameter uniformity of flexible wire, etc., and achieve good wearability , Excellent thermal shock resistance, easy to control the production process

Active Publication Date: 2008-05-14
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the key process of forming without adding additives, it is difficult to control the diameter uniformity of the flexible wire, thus affecting the continuous progress of the spraying process

Method used

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  • Multi-component hot spraying flexible wire and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Using Ni, Al, Cr, W, Co, Mo, Ti, Cu, and C as raw materials, the various components are Al, 20%; Cr, 1.0%; W, 3.0%; Co, 0.1%; Mo, 2.0% %; Ti, 1.5%, Cu, 5.0%; C, 5.0%, Ni, the balance, mixed evenly according to a certain proportion, adding organic binders such as sodium butyl glue, curing agent and auxiliary agent, the ratio of the binder is 15.0% of the powder is pressed on a speed-adjustable hydraulic press with a pressing speed of 3m / min. The pressing process can be carried out continuously or intermittently, and the forming is dried. Accompanying drawing 1 is the flow chart of processing process.

[0027] The same effect can be achieved if other organic substances such as silicone rubber and epoxy resin are used instead of sodium buna glue.

Embodiment 2

[0029]Ni, Al, W alloy powder is used as raw material according to a certain ratio, wherein the composition of the alloy powder is: Al, 23.0%; W, 3.0%; Ni, the balance. Mix the above-mentioned various raw materials, evenly add silicone rubber as a binder, titanate as a coupling agent and Si oxide as a reinforcing agent, or add organic solvent acetone and then mix (or stir and mix at the same time), The binder ratio is 20.0% of the powder, and the ratios are weight ratios.

[0030] Adding powder containing Cr, Mo, Co, Ti and other elements to the above materials, Cr, 0.1-5.0%; Co, 0.1-5.0%; Mo, 0.1-5.0%; Ti, 0.1-2.0%, will not change the material performance, the same effect can be obtained.

Embodiment 3

[0032] Use Ni, Cu elemental powder or alloy, C elemental powder Si oxide or other salts, and BN as raw materials, and mix them by mechanical ball milling according to a certain proportion, of which C, 5.0-15.0%; Cu, 5.0-25%; BN, 10.0- 16.0%; Si, 0.1-10.0%, mainly Ni. After mixing evenly, add an organic binder, press on a speed-adjustable hydraulic press, and dry after forming to obtain a flexible wire.

[0033] Flame spraying sealing coating, under certain spraying parameter conditions, superalloy as the base material, the experiment shows that the hardness of the coating is moderate, there is no crack on the coating surface, and it has good wearability, friction reduction and resistance Wear resistance, salt spray corrosion resistance, high tensile strength.

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Abstract

The invention relates to a multi-components hot spray flexible wire and a preparation method thereof. A flexible wire which is good in spraying technology adaptability is prepared through a method of mechanical milling, rubber mixing and squeezing by a slow vernier hydraulic press. The wire comprises Ni, Al, Cr, W, Co, Mo, Ti, Cu, C, BN and Si oxide or salts thereof, wherein the raw materials can be simple substance powder or alloy or compound, while the oxides can be one or more or the combination of a few materials. The binder can be inorganic materials, and the combination of some additives and addition agents is also included. The coating prepared by the wire has the advantages that the coating combines well with a matrix, the wearable performance is good, and the thermal shock resistance and salt-fog resistance are excellent. The wire has a wide application range, which can be applied in the surface modification and the reproduction of mechanical equipment.

Description

【Technical field】 [0001] The invention relates to the field of thermal spraying materials, in particular to a multi-component thermal spraying flexible wire and a preparation method thereof. 【Background technique】 [0002] At present, the manufacturing and remanufacturing of many equipment, and the surface modification of parts can be completed by thermal spraying. Spraying materials are mostly powder-based. In order to meet the multi-functional and high-performance requirements of materials, it is difficult for powder coating materials with simple components to meet the current increasing performance requirements. Composite coatings not only have the performance of simple component coatings, but also because composite coating materials However, the added components are complex and have different properties, so it is difficult to make a powder with uniform composition and suitable particle size range. [0003] In order to solve this problem, it is an important topic to pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06
Inventor 于月光宋希剑马江虹任先京曾克里田晔薛文涛
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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