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Salt Bath Nitriding Treatment Method for Compressor High Speed ​​Steel Sliding Vane

A salt bath nitriding and treatment method technology, applied in the chemical field, can solve the problems of increased production cost, increased production cycle, and the inability to guarantee that the white layer will not form, and achieve the effect of high control precision and controlled compound formation

Active Publication Date: 2020-09-29
浙江百达精工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the technical scheme described in the salt bath nitrocarburizing treatment of high-speed steel slides (publication number CN1616705A), a white layer of 2 to 3 μm will be formed. If the white layer is not removed, the coating formed by the PVD treatment process will be high in hardness and brittle. During the use of the compressor, the white layer is easy to crack, so that the service life of the sliding vane cannot meet the design requirements
Although the technical solution recorded in the salt bath nitriding treatment method for high-speed steel air-conditioning compressor blades (application publication number CN101871087A) can make the surface of the workpiece difficult to form a white layer, it cannot guarantee that the white layer will not form, and thus cannot guarantee the quality of the product.
To ensure the quality of the product, the current technical solution is to use a grinder to grind off the white layer, but there are problems of increased production cycle and increased production cost.

Method used

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  • Salt Bath Nitriding Treatment Method for Compressor High Speed ​​Steel Sliding Vane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A salt-bath nitriding treatment method for a compressor high-speed steel sliding vane is carried out in the following order:

[0017] The first step of pre-treatment: including clamping and cleaning the workpiece; specifically, the clamping of the workpiece is to place the R side of the compressor high-speed steel slide plate upwards and slightly inclined in the fixture; then place the compressor high-speed steel Put the jig of the slide into the ultrasonic cleaning machine for cleaning, take it out and air dry after cleaning. Compared with cleaning first and then clamping, the process of clamping the workpiece first and then cleaning the workpiece can avoid additional pollution of the blade during clamping, which will affect product quality.

[0018] The second step of preheating: put the fixture with the workpiece into the salt bath furnace for preheating, the temperature is 360°C, and the time is 15 minutes.

[0019] The third step of salt bath nitriding treatment: ...

Embodiment 2

[0023] A salt-bath nitriding treatment method for a compressor high-speed steel sliding vane is carried out in the following order:

[0024] The first step of pre-treatment: including clamping and cleaning the workpiece; specifically, the clamping of the workpiece is to place the R side of the compressor high-speed steel slide plate upwards and slightly inclined in the fixture; then place the compressor high-speed steel Put the jig of the slide into the ultrasonic cleaning machine for cleaning, take it out and air dry after cleaning. Compared with cleaning first and then clamping, the process of clamping the workpiece first and then cleaning the workpiece can avoid additional pollution of the blade during clamping, which will affect product quality.

[0025] The second step of preheating: put the fixture with the workpiece into the salt bath furnace for preheating, the temperature is 380°C, and the time is 14 minutes.

[0026] The third step of salt bath nitriding treatment: ...

Embodiment 3

[0030] A salt-bath nitriding treatment method for a compressor high-speed steel sliding vane is carried out in the following order:

[0031] The first step of pre-treatment: including clamping and cleaning the workpiece; specifically, the clamping of the workpiece is to place the R side of the compressor high-speed steel slide plate upwards and slightly inclined in the fixture; then place the compressor high-speed steel Put the jig of the slide into the ultrasonic cleaning machine for cleaning, take it out and air dry after cleaning. Compared with cleaning first and then clamping, the process of clamping the workpiece first and then cleaning the workpiece can avoid additional pollution of the blade during clamping, which will affect product quality.

[0032] The second step of preheating: put the fixture with the workpiece into the salt bath furnace for preheating, the temperature is 400°C, and the time is 12 minutes.

[0033] The third step of salt bath nitriding treatment: ...

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Abstract

The invention provides a salt bath nitriding treatment method for a compressor high-speed steel sliding sheet, and belongs to the technical filed of machines. The problem that a white bright layer isformed through an existing salt bath nitriding treatment method for the compressor high-speed steel sliding sheet is solved. The salt bath nitriding treatment method for the compressor high-speed steel sliding sheet comprises the following sequence steps that first, pre-treatment is conducted, specifically, a workpiece is clamped and cleaned; second, preheating is conducted, specifically, the workpiece is loaded into a salt bath furnace to be preheated; third, salt bath nitriding treatment is conducted, specifically, nitrogen is led into the salt bath furnace in the salt bath nitriding treatment process, and salt bath nitriding salt is composed of the following components of, by weight, 30%-50% of urea, 25%-40% of sodium carbonate, 20-30% of potassium carbonate and 5%-10% of lithium carbonate; fourth, oil cooling is conducted; and fifth, aftertreatment is conducted. By adopting the salt bath nitriding treatment method to machine the compressor high-speed steel sliding sheet, the whitebright layer cannot be formed on the surface of the compressor high-speed steel sliding sheet.

Description

technical field [0001] The invention belongs to the technical field of chemistry, and relates to a surface chemical treatment, in particular to a salt-bath nitriding treatment method for a compressor high-speed steel sliding vane. Background technique [0002] Compressor vanes are mainly made of high-speed steel and stainless steel; because of different raw materials, the processing technology of compressor vanes is not exactly the same; especially the surface treatment process of compressor vanes. There are many related documents about the production of the compressor sliding vane, such as the salt bath nitrocarburizing treatment (publication number CN1616705A) of the high-speed steel sliding vane, the salt bath nitrocarburizing treatment (publication number CN161674A) of the stainless steel sliding vane, a compressor Manufacturing method of sliding vane (authorized announcement number CN1239826C), salt-bath nitriding treatment method for high-speed steel air-conditioning c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/50C23C8/02C23C10/60
CPCC23C8/02C23C8/50C23C10/60
Inventor 史红立张启斌史建伟
Owner 浙江百达精工股份有限公司
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