Coating process for rotor compressor, coating of coating process and rotor compressor

Abstract

The invention discloses a coating process for a rotor compressor, a coating and the rotor compressor. The coating process comprises the following steps: plating a phosphating coating on the surfaces of a rolled plate and a cold-rolled plate: electroplating the surfaces of the hot-rolled plate and the cold-rolled plate compressor to form a zinc-manganese-cobalt-copper multi-element phosphating coating; high-edge paint electrophoresis is conducted, specifically, the high edge is attached to the zinc-manganese-cobalt-copper-containing multi-element phosphating coating of the compressor through an electrophoretic coating technology, and after a coating film is formed through electrophoresis, cleaning and curing are conducted to form a firm high-corrosion-environment-resistant paint film; according to the coating for the rotor compressor, the coating technology for the rotor compressor is applied, the zinc-manganese-cobalt-copper multi-element phosphating coating is arranged on the outer surface of the compressor, and the high edge paint is attached to the zinc-manganese-cobalt-copper multi-element phosphating coating.

Description

Technical Field

[0001] The present invention belongs to the technical field of the surface of rotary compressors, and particularly relates to a coating process for rotary compressors and a coating thereof. Background Art

[0002] In the case of a spray enthalpy variable frequency vertical compressor for 6-12M marine or land transportation containers, the environmental conditions are as follows: the temperature inside the container is -30 to 30 degrees, the maximum ambient temperature is 55 degrees, and the compressor is used for refrigeration and heating. For example, Figure 2 For a compressor with a thermal sprayed aluminum coating, in the 150H CASS test evaluation, it fails the 150H SWAAT (acidified synthetic seawater) test acceptance and cannot meet the above requirements. Therefore, how to meet the 150H salt spray technical requirements has become a huge obstacle to the realization of 6-12M marine or land transportation containers.

[0003] To solve the above problems, it is necessary to optimize and improve an existing coating process for rotary compressors to meet the above technical requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a coating process for rotary compressors, including the following steps:

[0005] Ultrasonic degreasing and anti-rust cleaning of hot-rolled plates and cold-rolled plates: For the whole machine of hot-rolled plates and cold-rolled plates of the compressor assembly, oxalic acid is used to treat the surface of the compressor with an ultrasonic device for degreasing and rust removal, and its main function is to clean the surface rust and oil stains.

[0006] Second degreasing by degreasing cleaning: After the compressor completes degreasing and rust removal, the degreasing effect on the surface of the compressor is enhanced, and the treatment time is 2-3 minutes. Its function is to degrease the hot-rolled plates and cold-rolled plates of the compressor again to ensure the uniformity of the water film leveling property.

[0007] Washing the compressor: The surface of the compressor is cleaned with acid and alkali, and the treatment time is 30-60s. Its function is to prevent pollution in the subsequent processes.

[0008] Coating the surface of hot-rolled plates and cold-rolled plates with a phosphating coating: Electroplate the surface of the hot-rolled plates and cold-rolled plates of the compressor to form a zinc-manganese-cobalt-copper multi-element phosphating coating.

[0009] Second water washing of hot-rolled plates and cold-rolled plates: The surface of the compressor is cleaned with acid and alkali, and the treatment time is 30-60s. Its function is to prevent pollution in the subsequent processes.

[0010] High-edge paint electrophoresis: Use the electrophoretic coating process to attach the high-edge to the compressor with a zinc-manganese-cobalt-copper multi-element phosphating coating. After the electrophoretic film is formed, it is cleaned, and after curing, a firm paint film resistant to a high-corrosion environment is formed.

[0011] During the ultrasonic degreasing and anti-rust cleaning of hot-rolled plates and cold-rolled plates:

[0012] Oxalic acid concentration: 2 - 3%, temperature: 50 - 65°C, treatment time: 2 - 3 minutes, circulation pressure: 2 - 3 MPa;

[0013] In the phosphating coating on the surface of hot - rolled and cold - rolled plates: The phosphating coating is a zinc - manganese - cobalt - copper multi - element phosphating coating, film thickness: 2 - 3 g / cm, phosphating crystal size: 1 - 10 μm, phosphating thickness: 2 - 6 μm;

[0014] In the high - edge paint electrophoresis: The high - edge is an epoxy resin high - fluidity coating, epoxy resin 55%, color paste 33%, temperature: 140 degrees, 20 minutes, coating film thickness: 20 - 30 μm.

[0015] A coating for a rotary compressor, applying the above - mentioned coating process for a rotary compressor, a zinc - manganese - cobalt - copper multi - element phosphating coating is provided on the outer surface of the compressor, and a high - edge paint is attached to the zinc - manganese - cobalt - copper multi - element phosphating coating.

[0016] A rotary compressor is manufactured by applying the above - mentioned coating process for a rotary compressor.

[0017] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above - mentioned and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 It is a schematic diagram of a coating process for a rotary compressor of the present invention;

[0020] Figure 2 It is a schematic diagram of an existing hot - sprayed aluminum coating;

[0021] Figure 3 It is a schematic diagram of a coating process for a rotary compressor of the present invention;

[0022] Figure 4 It is a qualified diagram of experimental verification of a coating process for a rotary compressor of the present invention.

[0023] Figure 5 It is a diagram of experimental comparison results of a coating process for a rotary compressor of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes in detail the specific embodiments of the present application in conjunction with the drawings. These embodiments are only used to illustrate the present application and are not intended to limit the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0028] A coating process for a rotary compressor includes the following steps:

[0029] Step 1, ultrasonic degreasing and rust prevention cleaning of hot-rolled plates and cold-rolled plates: For the whole machine of hot-rolled plates and cold-rolled plates of the compressor assembly, use oxalic acid to perform ultrasonic equipment degreasing and rust removal on the surface of the compressor. Its main function is to clean the surface rust and oil stains.

[0030] Step 2, degreasing cleaning for the second degreasing: After the compressor completes degreasing and rust removal, to increase the degreasing effect on the surface of the compressor, the treatment time is 2 - 3 minutes. Its function is to degrease the hot-rolled plates and cold-rolled plates of the compressor again to ensure the uniformity of the water film leveling property.

[0031] Step 3, water washing of the compressor: Clean the surface of the compressor with acid and alkali, and the treatment time is 30 - 60 s. Its function is to prevent pollution in the subsequent processes.

[0032] Step 4, plating a phosphating coating on the surface of hot-rolled plates and cold-rolled plates: Electroplate a zinc-manganese-cobalt-copper multi-element phosphating coating on the surface of the hot-rolled plates and cold-rolled plates of the compressor.

[0033] Step 5, secondary water washing of hot-rolled plates and cold-rolled plate profiles: Clean the surface of the compressor with acid and alkali, and the treatment time is 30 - 60 s. Its function is to prevent pollution in the subsequent processes.

[0034] Step 6, high-edge paint electrophoresis: Use the electrophoretic coating process to attach the high-edge paint to the zinc-manganese-cobalt-copper multi-component phosphating coating of the compressor. After the coating is electrophoretically formed, it is cleaned. After curing, a firm paint film resistant to high-corrosion environments is formed;

[0035] Among them, the composition of the surface pretreatment "zinc-manganese-cobalt-copper multi-component phosphating film + high-edge paint coverage" is as follows:

[0036] In ultrasonic degreasing and anti-rust cleaning of hot-rolled plates and cold-rolled plates:

[0037] Oxalic acid concentration: 2 - 3%, temperature: 50 - 65°C, treatment time 2 - 3 minutes, circulation pressure: 2 - 3 MPa;

[0038] In surface phosphating coating of hot-rolled plates and cold-rolled plates: The phosphating coating is a zinc-manganese-cobalt-copper multi-component phosphating coating, film thickness: 2 - 3 g / cm, phosphating crystal size: 1 - 10 μm, phosphating thickness: 2 - 6 μm;

[0039] In high-edge paint electrophoresis: The high-edge paint is an epoxy resin high-fluidity coating, epoxy resin 55%, color paste 33%, temperature: 140 degrees, 20 minutes, coating film thickness: 20 - 30 μm.

[0040] Specifically, in an embodiment of the present application, a coating for a rotary compressor applies the above-mentioned coating process for a rotary compressor. A zinc-manganese-cobalt-copper multi-component phosphating coating is provided on the outer surface of the compressor, and a high-edge paint is attached to the zinc-manganese-cobalt-copper multi-component phosphating coating to obtain a compressor coating as shown in Figure 1 、 3 .

[0041] Specifically, in an embodiment of the present application, through experimental comparison: When the compressor uses zinc-based phosphating + low-temperature paint, it rusts after 150H in the acidic salt spray test. However, by using the electroplated zinc-manganese process + edge paint process of the present invention, it does not rust and meets the technical application requirements;

[0042] After being tested by the CASS test: Using the zinc-manganese pre-treatment + high-edge paint to replace the original valley spraying aluminum process can meet the design requirements and prevent the coating of the compressor from rusting during sea transportation in terms of corrosion resistance.

[0043] Through the combination of zinc-manganese pre-treatment + high-edge paint, the reliability of the compressor coating CASS is improved and the quality of the compressor is ensured, meeting the reliability requirements of the sea transportation salt spray resistance performance;

[0044] The present application realizes the 150H process of CASS salt spray resistance in the rotary compressor industry. Through the compressor zinc-manganese pre-treatment + high-edge paint process of the present application, the above technical requirements are realized;

[0045] Such as Figure 4 、 5, the comparative test summary is as follows:

[0046]

[0047] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A coating process for a rotor compressor, characterized in that: The steps include: Phosphate coating on the surface of hot-rolled plate and cold-rolled plate: electroplating the surface of hot-rolled plate and cold-rolled plate compressor to form zinc-manganese-cobalt-copper multi-element phosphate coating; High edge paint electrophoresis: The high edge is attached to the compressor's zinc-manganese-cobalt-copper multi-phosphating coating using an electrophoretic coating process. The coating is cleaned after electrophoresis film formation and cured to form a strong paint film that is resistant to highly corrosive environments.

2. A coating process for a rotor compressor as claimed in claim 1, characterized in that: Phosphate coating on the surface of hot-rolled plate and cold-rolled plate: the phosphate coating is a zinc-manganese-cobalt-copper multi-element phosphate coating, with a film thickness of 2-3g / cm, a phosphate crystal size of 1-10μm, and a phosphate thickness of 2-6μm.

3. A coating process for a rotor compressor as claimed in claim 1, characterized in that: High edge paint electrophoresis: high edge is epoxy resin high fluidity coating, epoxy resin 55%, color paste 33%, temperature: 140 degrees, 20 minutes, coating film thickness: 20-30μm.

4. A coating process for a rotor compressor as claimed in claim 1, characterized in that: Before completing the phosphating coating on the surface of hot-rolled and cold-rolled plates, complete the following steps: Ultrasonic degreasing and anti-rust cleaning of hot-rolled and cold-rolled plates: The hot-rolled and cold-rolled plates of the compressor assembly are treated with oxalic acid to remove oil and rust by ultrasonic equipment. Its main function is to clean the surface rust and oil stains; Degreasing and cleaning for the second degreasing: After the compressor is degreased and rusted, the degreasing effect on the compressor surface is increased. The processing time is 2-3 minutes. Its function is to degrease the hot-rolled plate and cold-rolled plate compressor again to ensure the uniformity of the water film leveling; Water-washed compressor cleaning: The compressor surface is cleaned with acid or alkali for 30-60 seconds, which will pollute the subsequent processes.

5. A coating process for a rotor compressor as claimed in claim 1, characterized in that: After the phosphating coating is applied to the surface of hot-rolled and cold-rolled plates, and before the electrophoresis of high-edge paint, the following steps are completed: Second water washing of hot-rolled and cold-rolled plate profiles: The compressor surface is cleaned with acid and alkali for 30-60s, which will pollute the subsequent processes.

6. A coating process for a rotor compressor as claimed in claim 1, characterized in that: Ultrasonic degreasing and anti-rust cleaning of hot-rolled and cold-rolled plates: oxalic acid concentration: 2-3%, temperature: 50-65℃, processing time: 2-3 minutes, circulation pressure: 2-3Mpa.

7. A coating for a rotor compressor, characterized in that: The coating for the rotor compressor is obtained by applying the coating process described in any one of claims 1-6, wherein the coating for the rotor compressor includes a zinc-manganese-cobalt-copper multi-phosphating coating arranged on the outer surface of the compressor, and a high-edge paint is attached to the zinc-manganese-cobalt-copper multi-phosphating coating.

8. A rotary compressor, characterized in that: A rotor compressor manufactured using a coating process as described in any one of claims 1-6.

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