CN115142002A - Air conditioner shell spraying process - Google Patents
Air conditioner shell spraying process Download PDFInfo
- Publication number
- CN115142002A CN115142002A CN202210593928.XA CN202210593928A CN115142002A CN 115142002 A CN115142002 A CN 115142002A CN 202210593928 A CN202210593928 A CN 202210593928A CN 115142002 A CN115142002 A CN 115142002A
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- shell
- spraying
- remelting
- conditioner shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/123—Spraying molten metal
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention relates to the technical field of air conditioner processing equipment, in particular to an air conditioner shell spraying process, which comprises the following steps: pretreating the surface of the shell of the air conditioner before thermal spraying; step two: after the surface of the air conditioner shell is pretreated, preheating the air conditioner shell at 140-180 ℃; step three: spraying a layer of primer on the surface of the treated air conditioner shell; step four: flashing off the primer, namely putting the air conditioner shell sprayed with the primer into a drying box, and pre-drying at a certain temperature; step five: carrying out remelting post-treatment on the thermal spraying coating by adopting a plasma transferred arc remelting technology, and slowly cooling the metal base material with the thermal spraying coating to room temperature in air after the remelting post-treatment is finished; step six: and (3) baking, namely placing the remelted material into a program drying box, and baking and curing in a stepped heating mode, so that the problem that the traditional thermal spraying effect is not ideal is solved.
Description
Technical Field
The invention relates to the technical field of air conditioner processing equipment, in particular to a spraying process of an air conditioner shell.
Background
Thermal spray coatings are built up from disk-shaped particles formed by deformation of particles from a molten or semi-molten state, having a layered structure, the interfacial bonding state between the layers of particles within the coating significantly affecting or even controlling various properties of the coating.
Research shows that the bonding rate between particle layers of the coating is very limited and is only 32% at most no matter the coating is a metal coating or a thermal spraying ceramic coating, and various mechanical properties (such as elastic modulus, fracture toughness, erosion wear rate), electric conductivity, thermal conductivity and the like of the coating are controlled by the limited bonding of interfaces between the particle layers in the coating, so that the properties of the coating are 10% -30% of the properties of corresponding blocks. On the other hand, the unbonded interface and other types of pores are communicated with each other to form a through pore which penetrates from the surface of the coating to the coating/substrate interface, so that the coating cannot completely block and isolate the contact between a corrosive medium and a substrate alloy, and the corrosion resistance effect of the thermal spraying coating prepared by the material with excellent wear resistance is not ideal.
Disclosure of Invention
In view of the above, the present invention provides an air conditioner housing spraying process to solve the problem of the non-ideal effect of the conventional thermal spraying proposed in the above background art.
Based on the purpose, the invention provides an air conditioner shell spraying process, which comprises
The method comprises the following steps: pretreating the surface of the shell of the air conditioner before thermal spraying;
step two: after the surface of the air conditioner shell is pretreated, preheating the air conditioner shell at 140-180 ℃;
step three: spraying a layer of primer to the surface of the treated air conditioner shell;
step four: flashing off the primer, namely putting the air conditioner shell sprayed with the primer into a drying box, and pre-drying at a certain temperature;
step five: adopting a plasma transferred arc remelting technology to carry out remelting post-treatment on the thermal spraying coating, and slowly cooling the metal base material with the thermal spraying coating in air to room temperature after the remelting post-treatment is finished;
step six: and (5) baking, namely putting the remelted material into a program drying box, and baking and curing in a step-type heating mode.
Preferably, the pretreatment comprises the steps of cleaning the surface of the shell of the air conditioner to be coated with alcohol, acetone and clean water in sequence to remove oil stains;
carrying out sand blasting and rust removing and phosphorylation treatment;
and drying the shell of the air conditioner by hot air.
Preferably, the spray primer includes,
forming an intermediate transition layer with the thickness of 0.5-0.6 mm on the surface of the preheated air conditioner shell by adopting laser spraying equipment, wherein the intermediate transition layer is made of NiCr;
and preparing a thermal spraying coating with the thickness of 0.3-0.8 mm on the surface of the transition layer by adopting plasma thermal spraying equipment, wherein the thermal spraying coating is made of nickel-based alloy.
Preferably, the temperature of the hot air is 70-90 ℃.
Preferably, the pre-drying temperature is 55-75 ℃, and the time is 9-15 min.
Preferably, the step-type heating mode is as follows: the temperature is raised to 80 ℃ at the speed of 10-20 ℃/min, the temperature is kept for 1-3 min, then the temperature is raised to 180 ℃ at the speed of 15-25 ℃/min, and the temperature is kept for 30-45 min.
Preferably, a laser spraying device is adopted to form a middle transition layer with the thickness of 0.5-0.6 mm on the surface of the preheated air conditioner shell, and the method specifically comprises the following steps:
preparing a 0.5-0.6 mm intermediate transition layer on the surface of the preheated air conditioner shell by adopting laser spraying equipment, wherein the specific parameters of the laser spraying equipment are as follows: the laser power is 3-7kW, the light spot of the laser beam is rectangular, the size of the rectangular light spot is 9-51mm of the long edge and 3mm of the short edge, the scanning speed of the laser head is 3-790mm/s, and the middle transition layer and the shell of the air conditioner are metallurgically bonded.
Preferably, the plasma transferred arc remelting technology is adopted to carry out remelting on the thermal spray coating, and the control parameters in the process of remelting the thermal spray coating are that the moving speed of a plasma welding gun is 67mm/min, the remelting current is 59A, and the plasma gas flow is 5L/min.
Preferably, a plasma transferred arc remelting technology is adopted to protect the thermal spraying coating by adopting a gas hood in the remelting post-treatment process, and an atmospheric plasma spraying technology is adopted.
The invention has the beneficial effects that: the invention comprises the following steps: pretreating the surface of the shell of the air conditioner before thermal spraying; step two: after the surface of the air conditioner shell is pretreated, preheating the air conditioner shell at 140-180 ℃; step three: spraying a layer of primer on the surface of the treated air conditioner shell; step four: flashing off the primer, namely putting the air conditioner shell sprayed with the primer into a drying box, and pre-drying at a certain temperature; step five: adopting a plasma transferred arc remelting technology to carry out remelting post-treatment on the thermal spraying coating, and slowly cooling the metal base material with the thermal spraying coating in air to room temperature after the remelting post-treatment is finished; step six: and (5) baking, namely putting the remelted material into a program drying box, and baking and curing in a step-type heating mode. The problem that the traditional thermal spraying effect is not ideal is solved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments below.
It is to be noted that technical terms or scientific terms used herein should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In this embodiment, a spraying process for an air conditioner case includes
The method comprises the following steps: pretreating the surface of the shell of the air conditioner before thermal spraying;
step two: after the surface of the air conditioner shell is pretreated, preheating the air conditioner shell at 140-180 ℃;
step three: spraying a layer of primer to the surface of the treated air conditioner shell;
step four: flashing off the primer, namely putting the air conditioner shell sprayed with the primer into a drying box, and pre-drying at a certain temperature;
step five: carrying out remelting post-treatment on the thermal spraying coating by adopting a plasma transferred arc remelting technology, and slowly cooling the metal base material with the thermal spraying coating to room temperature in air after the remelting post-treatment is finished;
step six: and (5) baking, namely putting the remelted material into a program drying box, and baking and curing in a step-type heating mode.
As an embodiment of the present invention, the pretreatment includes cleaning the surface of the casing of the air conditioner to be coated with alcohol, acetone, and clear water in sequence to remove oil stains; carrying out sand blasting and rust removal and phosphorylation treatment; and drying the shell of the air conditioner by hot air.
As an embodiment of the invention, the spraying primer comprises the steps of forming an intermediate transition layer with the thickness of 0.5-0.6 mm on the surface of a preheated air conditioner shell by adopting laser spraying equipment, wherein the intermediate transition layer is made of NiCr; and preparing a thermal spraying coating with the thickness of 0.3-0.8 mm on the surface of the transition layer by adopting plasma thermal spraying equipment, wherein the thermal spraying coating is made of nickel-based alloy.
As an embodiment of the present invention, the temperature of the hot air is 70 to 90 ℃.
As an embodiment of the invention, the pre-drying temperature is 55-75 ℃ and the time is 9-15 min.
As an embodiment of the present invention, the step-type heating method is: the temperature is raised to 80 ℃ at the speed of 10-20 ℃/min, the temperature is kept for 1-3 min, then the temperature is raised to 180 ℃ at the speed of 15-25 ℃/min, and the temperature is kept for 30-45 min.
As an embodiment of the invention, a laser spraying device is adopted to form an intermediate transition layer with the thickness of 0.5-0.6 mm on the surface of the preheated air conditioner shell, and the method specifically comprises the following steps: preparing a 0.5-0.6 mm intermediate transition layer on the surface of the preheated air conditioner shell by adopting laser spraying equipment, wherein the specific parameters of the laser spraying equipment are as follows: the laser power is 3-7kW, the light spot of the laser beam is rectangular, the size of the rectangular light spot is 9-51mm of the long edge and 3mm of the short edge, the scanning speed of the laser head is 3-790mm/s, and the middle transition layer and the shell of the air conditioner are metallurgically bonded.
As an embodiment of the invention, the plasma transferred arc remelting technology is adopted to carry out remelting post-treatment on the thermal spraying coating, and the control parameters comprise the plasma welding gun moving speed of 67mm/min, the remelting current of 59A and the plasma gas flow of 5L/min.
As an embodiment of the invention, a gas hood is adopted for protection in the remelting post-treatment process of the thermal spraying coating by adopting a plasma transferred arc remelting technology, and an atmospheric plasma spraying technology is adopted.
The working principle is as follows: the method comprises the following steps: pretreating the surface of the shell of the air conditioner before thermal spraying; step two: after the surface of the air conditioner shell is pretreated, preheating the air conditioner shell at 140-180 ℃; step three: spraying a layer of primer to the surface of the treated air conditioner shell; step four: flashing off the primer, namely putting the air conditioner shell sprayed with the primer into a drying box, and pre-drying at a certain temperature; step five: carrying out remelting post-treatment on the thermal spraying coating by adopting a plasma transferred arc remelting technology, and slowly cooling the metal base material with the thermal spraying coating to room temperature in air after the remelting post-treatment is finished; step six: and (5) baking, namely putting the remelted material into a program drying box, and baking and curing in a step-type heating mode.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to those examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. An air conditioner shell spraying process is characterized by comprising
The method comprises the following steps: pretreating the surface of the shell of the air conditioner before thermal spraying;
step two: after the surface of the air conditioner shell is pretreated, preheating the air conditioner shell at 140-180 ℃;
step three: spraying a layer of primer to the surface of the treated air conditioner shell;
step four: flashing off the primer, namely putting the air conditioner shell sprayed with the primer into a drying box, and pre-drying at a certain temperature;
step five: adopting a plasma transferred arc remelting technology to carry out remelting post-treatment on the thermal spraying coating, and slowly cooling the metal base material with the thermal spraying coating in air to room temperature after the remelting post-treatment is finished;
step six: and (4) baking, namely putting the remelted material into a program drying box, and baking and curing in a stepped heating mode.
2. The air conditioner casing spraying process according to claim 1, wherein the pretreatment comprises cleaning the surface of the air conditioner casing to be coated with alcohol, acetone and clean water in sequence to remove oil stains;
carrying out sand blasting and rust removing and phosphorylation treatment;
and drying the shell of the air conditioner by hot air.
3. The air conditioning casing spray coating process of claim 1, wherein said spray coating primer comprises,
forming an intermediate transition layer with the thickness of 0.5-0.6 mm on the surface of the preheated air conditioner shell by adopting laser spraying equipment, wherein the intermediate transition layer is made of NiCr;
and preparing a thermal spraying coating with the thickness of 0.3-0.8 mm on the surface of the transition layer by adopting plasma thermal spraying equipment, wherein the thermal spraying coating is made of nickel-based alloy.
4. The air conditioner case spraying process as claimed in claim 2, wherein the hot air temperature is 70-90 ℃.
5. The air conditioner casing spraying process as claimed in claim 1, wherein the pre-drying temperature is 55-75 ℃ and the time is 9-15 min.
6. The air conditioner shell spraying process as claimed in claim 1, wherein the stepped heating manner is: firstly heating to 80 ℃ at the speed of 10-20 ℃/min, keeping the temperature for 1-3 min, then heating to 180 ℃ at the speed of 15-25 ℃/min, and keeping the temperature for 30-45 min.
7. The air conditioner shell spraying process as claimed in claim 3, wherein a laser spraying device is used to form an intermediate transition layer with a thickness of 0.5-0.6 mm on the surface of the preheated air conditioner shell, and the process specifically comprises the following steps:
preparing a 0.5-0.6 mm intermediate transition layer on the surface of the preheated air conditioner shell by adopting laser spraying equipment, wherein the specific parameters of the laser spraying equipment are as follows: the laser power is 3-7kW, the light spot of the laser beam is rectangular, the size of the rectangular light spot is 9-51mm of the long edge and 3mm of the short edge, the scanning speed of the laser head is 3-790mm/s, and the middle transition layer and the shell of the air conditioner are metallurgically bonded.
8. The air conditioner casing spraying process of claim 1, wherein the control parameters in the remelting post-treatment process of the thermal spray coating by the plasma transferred arc remelting technology are the plasma welding gun moving speed of 67mm/min, the remelting current of 59A and the plasma gas flow of 5L/min.
9. The air conditioner case spray coating process of claim 1, wherein a gas shield is used for protection during the post-remelting treatment of the thermally sprayed coating by plasma transferred arc remelting technology, and atmospheric plasma spray coating technology is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593928.XA CN115142002A (en) | 2022-05-27 | 2022-05-27 | Air conditioner shell spraying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593928.XA CN115142002A (en) | 2022-05-27 | 2022-05-27 | Air conditioner shell spraying process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115142002A true CN115142002A (en) | 2022-10-04 |
Family
ID=83405973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210593928.XA Withdrawn CN115142002A (en) | 2022-05-27 | 2022-05-27 | Air conditioner shell spraying process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115142002A (en) |
-
2022
- 2022-05-27 CN CN202210593928.XA patent/CN115142002A/en not_active Withdrawn
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221004 |
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| WW01 | Invention patent application withdrawn after publication |