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Plasma spraying method suitable for small-diameter annular parts

A technology of plasma spray gun and ring parts, which is applied in coating, melting spray plating, metal material coating process, etc., can solve the problems of wasting more time, increasing production cost, affecting work efficiency, etc. The effect of comprehensive coverage and short flame pause time

Active Publication Date: 2020-02-07
AECC AERO SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For small-diameter ring parts, that is, ring parts with a diameter less than φ100mm (such as shafts, pipes, bushings, etc.), there are the following problems in spraying parts in this way: continuous spraying will cause the parts to overheat easily and burn out the parts; Processing a part, clamping, spraying start and stop, etc. will waste a lot of time, affect work efficiency, and increase production costs

Method used

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  • Plasma spraying method suitable for small-diameter annular parts
  • Plasma spraying method suitable for small-diameter annular parts

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Effect test

Embodiment

[0031] see Figure 1 to Figure 2 , a kind of plasma spraying method applicable to small-diameter rings in the present invention is characterized in that, comprises the following steps in sequence:

[0032] (S1): Use the cleaning solution acetone to clean the part 1 to be sprayed, and then use a 60-mesh brown corundum grinding wheel to blast the surface roughness of the part 1 to be sprayed to 2 μm, and use compressed air to remove the residual sand on the part 1 to be sprayed. Blowing off, the present invention makes the surface of the part 1 to be sprayed smoother by processing the surface roughness of the part 1 to be sprayed, which is convenient for the subsequent spraying operation, so that the spray paint can be evenly covered on the part;

[0033] (S2): A plurality of parts to be sprayed 1 are sequentially clamped on the spraying fixture 2, and only the area 11 to be sprayed of the parts to be sprayed 1 is exposed, and the spraying fixture 2 includes a support frame 21 f...

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Abstract

The invention discloses a plasma spraying method suitable for small-diameter annular parts, and belongs to the field of thermal spraying processing. The method sequentially comprises the following steps that the surface roughness of to-be-sprayed parts is subjected to sand blowing to 2 micrometers to 3.5 micrometers through a grinding wheel, and residual sand grains on the to-be-sprayed parts areblown down through compressed air; the multiple to-be-sprayed parts are sequentially clamped on a spraying clamp, and only to-be-sprayed areas of the to-be-sprayed parts are exposed; nickel-chromium chromium carbide powder is contained in a powder feed mechanism of a plasma spray gun; and the spray gun is set to move in the direction perpendicular to the autorotation axis of the parts in a Z shapeto carry out spraying. By means of the plasma spraying method, the surfaces of the parts are covered with spraying flame flow more comprehensively, the spraying processing efficiency is improved, theheating clearance time of each part is prolonged, and the surface temperature of the parts is not prone to being too high.

Description

technical field [0001] The invention relates to the field of thermal spraying processing, in particular to a plasma spraying method suitable for small-diameter rings. Background technique [0002] Thermal spraying refers to a method in which the coating material is heated and melted, atomized into extremely fine particles by high-speed airflow, and sprayed onto the surface of the workpiece at a high speed to form a coating. According to the needs, different coating materials can be selected to obtain one or more properties in terms of wear resistance, corrosion resistance, and oxidation resistance. The thermal spraying process has been widely used in aerospace aircraft, military and civil aircraft and ship engines. With the increasing application of sprayed parts, how to improve the processing efficiency of parts and reduce production costs has become one of the core competitiveness of enterprises to occupy the market. [0003] Generally, ring-shaped parts can be placed in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/134C23C4/06C23C4/01C23C4/02
CPCC23C4/134C23C4/06C23C4/01C23C4/02
Inventor 罗朝勇黎红英赵阳黄勋吴雷谷平刘雅朋龚阳阳
Owner AECC AERO SCI & TECH CO LTD
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