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Method for strengthening aerodynamic spraying copper alloy coating

A gas dynamic spraying, copper alloy technology, applied in metal material coating process, coating, heating inorganic powder coating and other directions, can solve the problems of destroying the surface metal composition and complex methods, etc.

Inactive Publication Date: 2018-03-06
新疆亚中易德环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process method of this patent, due to heat treatment and diffusion after tin plating, a layer of tin infiltrated layer with a thickness greater than 10 μm is formed on the surface of copper or copper alloy. However, thermal spraying is also used in this method, and there are the same problems as in the above-mentioned documents
[0006] At present, the methods for surface strengthening of copper and copper alloy products are complex, which will destroy the composition of the surface metal, or require secondary finishing and processing, and are not suitable for surface strengthening of precision machined devices. The method for surface strengthening of copper and copper alloy products improves the surface strength of existing pure copper and copper alloys without affecting the surface metal composition, product size and structure, and does not require secondary finishing. And the hardness of the coating of copper alloy products

Method used

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  • Method for strengthening aerodynamic spraying copper alloy coating
  • Method for strengthening aerodynamic spraying copper alloy coating
  • Method for strengthening aerodynamic spraying copper alloy coating

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The present invention adopts the following method of aerodynamic spraying of copper alloy for spraying, comprising the following steps

[0031] (1) Degreasing parts before spraying;

[0032] (2) Install the part on a device (such as a lathe) with a relative speed of 80-150 rpm to rotate;

[0033] (3) Activated surface spraying: powder material Cu-Al-X, gas powder flow temperature 100-150 degrees Celsius, powder flow rate 5 g / s, coating thickness 15-20 microns;

[0034] (4) Normal spraying: increase the temperature of the gas flow to 400 degrees Celsius, the powder flow rate is 18 g / s, the spraying distance is 3-15 mm, the spraying thickness is 1-3 mm, and the coating thickness is guaranteed to have sufficient machining allowance;

[0035] (5) Spot spraying to eliminate blemishes;

[0036] (6) Machining to meet design standards;

[0037] (7) Put the sprayed parts into a heating furnace for heat treatment, wherein the heat treatment temperature is 400±50°C, and the hea...

Embodiment 2

[0045] Such as figure 1 As shown, the spare part is a distributor of hydraulic oil in a hydraulic plunger pump with a steel base plate, with a diameter of 50-180mm and a thickness of 2-5mm.

[0046] Spraying is carried out by the following method of gas power spraying copper alloy, including the following steps

[0047] (1) Degreasing parts before spraying;

[0048] (2) Install the part on a device (such as a lathe) with a relative speed of 100 rpm to rotate;

[0049] (3) Activated surface spraying: powder material Cu-Al-X, gas powder flow temperature 100-150 degrees Celsius, powder flow rate 5 g / s, coating thickness 15-20 microns;

[0050] (4) Normal spraying: increase the temperature of the gas flow to 400 degrees Celsius, the powder flow rate is 18 g / s, the spraying distance is 3-15 mm, the spraying thickness is 1-3 mm, and the coating thickness is guaranteed to have sufficient machining allowance;

[0051] (5) Spot spraying to eliminate blemishes;

[0052] (6) Machining ...

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Abstract

The invention relates to a method for strengthening an aerodynamic spraying copper alloy coating. On premise of not influencing the surface metal components, not influencing the size and structure ofthe product and not needing secondary finishing, the surface strength of the conventional fine copper and copper alloys is improved, and the hardness of the copper and copper alloy product coatings isimproved.

Description

technical field [0001] The invention relates to the field of material surface strengthening processing, and mainly relates to a method for strengthening the hardness of a copper alloy coating, in particular to a method for strengthening a copper alloy coating (plating) layer by aerodynamic spraying. Background technique [0002] Copper and copper alloys are one of the earliest metal materials used in human history. Since wear is one of the main failure modes of metal components, in various industrial sectors, many mechanical devices often have contact between surfaces during their normal use. Erosion, etc., cause a certain degree of wear and peeling on the surface of the mold. Over time, the components will fail due to excessive wear and contact fatigue. One of the current solutions is to prepare a reinforced coating on the surface of metal components to improve their wear resistance. Copper alloy has excellent electrical conductivity, thermal conductivity, formability and ...

Claims

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Application Information

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IPC IPC(8): C23C24/08
CPCC23C24/087
Inventor 袁天语袁志军
Owner 新疆亚中易德环保科技有限公司
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