Anti-carburizing construction technology of air condition compressor accessories

A technology of air-conditioning compressor and construction technology, which is applied in the direction of metal material coating technology, molten spraying, coating, etc., can solve environmental pollution and other problems, and achieve the goal of reducing production costs, ensuring carburizing quality, and high thermal stability Effect

Inactive Publication Date: 2016-05-11
WUHU YONGWEI REFRIGERATION ACCESSORIES MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current coating cannot withstand the high temperature environment, so carbon infiltration will still occur; 3. Copper plating method: use electroplating to plate a copper layer with a thickness of 0.02-0.04mm on the parts that do not need carburizing, which can be compared Reliable prevention of carbon infiltration, but electroplating brings pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An inorganic anti-carburization construction process for air-conditioning compressor accessories, comprising the following steps:

[0027] (1) First, ultrasonically clean and dry the parts of the air conditioner compressor;

[0028] (2) Melt the Al wire to form molten high-temperature liquid Al, and mix it with graphite powder according to the mass ratio of graphite powder and Al at 0.55%-0.60%;

[0029] (3) Evenly spray the melted high-temperature liquid Al obtained in step (2) mixed with graphite powder on the outer surface of the compressor fittings, and combine with oxygen in the air to form Al with a thickness of 0.15mm 2 o 3 Coating, static 8-16h;

[0030] (4) Use a metal flame gas spray gun to uniformly spray the mixture of molten high-temperature liquid Cu, binder and boron nitride on the Al 2 o 3 Coating, so that the copper liquid, infiltrated into the Al 2 o 3 In the pores of the coating, cool to room temperature, and the thickness of the sprayed copper ...

Embodiment 2

[0036] An inorganic anti-carburization construction process for air-conditioning compressor accessories, comprising the following steps:

[0037] (1) First, ultrasonically clean and dry the parts of the air conditioner compressor;

[0038] (2) Melt the Al wire to form molten high-temperature liquid Al, and mix it with graphite powder according to the mass ratio of graphite powder and Al at 0.55%-0.60%;

[0039] (3) Evenly spray the melted high-temperature liquid Al obtained in step (2) mixed with graphite powder on the outer surface of the compressor fittings, and combine with oxygen in the air to form Al with a thickness of 0.1 mm 2 o 3 Coating, static 8-16h;

[0040] (4) Use a metal flame gas spray gun to uniformly spray the mixture of molten high-temperature liquid Cu, binder and boron nitride on the Al 2 o 3 Coating, so that the copper liquid, infiltrated into the Al 2 o 3 In the pores of the coating, cool to room temperature, and the thickness of the sprayed copper ...

Embodiment 3

[0046] An inorganic anti-carburization construction process for air-conditioning compressor accessories, comprising the following steps:

[0047] (1) First, ultrasonically clean and dry the parts of the air conditioner compressor;

[0048] (2) Melt the Al wire to form molten high-temperature liquid Al, and mix it with graphite powder according to the mass ratio of graphite powder and Al at 0.55%-0.60%;

[0049] (3) Evenly spray the melted high-temperature liquid Al obtained in step (2) mixed with graphite powder on the outer surface of the compressor fittings, and combine with oxygen in the air to form Al with a thickness of 0.2mm 2 o 3 Coating, static 8-16h;

[0050] (4) Use a metal flame gas spray gun to uniformly spray the mixture of molten high-temperature liquid Cu, binder and boron nitride on the Al 2 o 3Coating, so that the copper liquid, infiltrated into the Al 2 o 3 In the pores of the coating, cool to room temperature, and the thickness of the sprayed copper la...

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Abstract

The invention discloses an anti-carburizing construction technology of air condition compressor accessories, belonging to the field of casting or heat treatment coating. The anti-carburizing construction technology comprises the steps of ultrasonic cleaning and drying, spraying of an Al2O3 coating, spraying of a mixture coating of Cu, an adhesive and boron nitride, sintering and the like. According to the anti-carburizing construction technology disclosed by the invention, the mixture of Cu, the adhesive and boron nitride is sprayed on an aluminum-based inner membrane so that copper liquid permeates into the pores of the aluminum-based inner membrane; the cooled copper liquid is firmly fixed on the aluminum-based inner membrane, and the coating is not peeled and can reliably prevent the permeation of carbon; and the anti-carburizing coating and method have the advantages of low porosity, high efficiency, good performance and low cost.

Description

technical field [0001] The invention belongs to casting or heat treatment paint technology, and more specifically relates to an anti-carburization construction technology for air conditioner compressor parts. Background technique [0002] Many mechanical parts have complex structures (such as splines, threads, and gears in the gear shaft), and the surface needs to be carburized, but some parts (such as threads) cannot be carburized. It is hoped to maintain the original quenched and tempered or normalized state. Otherwise, it will affect the performance (such as brittle fracture), resulting in unpredictable function decline or loss. Therefore, protection is required for these parts that do not want to be carburized [0003] Anti-carburization protection treatment. [0004] In the process of carburizing the surface of metals, most of them use vacuum furnaces to realize low-pressure carburizing at present. The temperature range is 930~980°C, and the maximum temperature can re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/06
CPCC23C4/06
Inventor 庄泉于建芝何春友
Owner WUHU YONGWEI REFRIGERATION ACCESSORIES MFG CO LTD
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