CN112742685A - Powder spraying process for surface treatment of metal piece - Google Patents
Powder spraying process for surface treatment of metal piece Download PDFInfo
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- CN112742685A CN112742685A CN202011548229.0A CN202011548229A CN112742685A CN 112742685 A CN112742685 A CN 112742685A CN 202011548229 A CN202011548229 A CN 202011548229A CN 112742685 A CN112742685 A CN 112742685A
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- metal piece
- metal
- temperature
- cleaning
- surface treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to a powder spraying process for surface treatment of a metal piece, which comprises the following steps: (1) pre-treating the surface of a metal piece; (2) cleaning; (3) degreasing; (4) phosphorization; (5) drying and preheating; (6) spraying; (7) curing; (8) and (6) checking. The method adopts the steps to treat the surface of the metal piece, has good spraying effect on the surface of the metal piece, is convenient to improve the quality and the performance of the metal piece, prolongs the service life, enlarges the application range, and has simple spraying process and convenient operation.
Description
Technical Field
The invention relates to the technical field of metal part surface treatment, in particular to a powder spraying process for metal part surface treatment.
Background
After the metal part is processed and produced, in order to improve the quality and enhance various performances of the metal part, the surface of the metal part needs to be treated, corresponding powder is sprayed on the surface of the metal part, and after the spraying treatment, the service life of the metal part can be prolonged, and the application range of the metal part is expanded. However, the existing metal part surface powder spraying method has the disadvantages of common spraying quality, complex process and inconvenient operation.
Disclosure of Invention
The present invention is directed to solving the above problems and to providing a powder spray coating process for surface treatment of metal parts.
In order to achieve the purpose, the invention adopts the following technical scheme:
a powder spraying process for surface treatment of metal parts comprises the following steps:
(1) pretreatment of the surface of a metal piece: removing rust spots, metal chips and sand grains on the surface of the metal piece;
(2) cleaning: firstly, cleaning the processed metal piece for the first time by using clean water, and then cleaning for the second time by using hot water to remove surface impurities;
(3) degreasing: immersing the cleaned metal piece into a degreasing solution at a certain temperature for 25-35min to remove grease on the surface of the metal piece, and cleaning the degreased metal piece for 3-5min by using pure water to remove residual impurities on the surface;
(4) phosphorization: soaking the degreased metal piece in phosphating solution for 4-6min at a certain temperature to form a layer of phosphating film on the surface of the metal piece, and then cleaning the metal piece for 3-5min by using pure water to remove residual phosphating solution on the surface;
(5) drying and preheating: putting the metal piece after phosphating and washing into an oven to dry the surface moisture, and then preheating for 30 min;
(6) spraying: spraying the surface of the metal piece in an electrostatic spraying mode;
(7) and (3) curing: putting the sprayed metal piece into a curing furnace, and curing for 20-25min at a certain temperature;
(8) and (4) checking: the surface of the metal piece is inspected for defects.
Particularly, the degreasing solution in the step (3) is one of strongly alkaline degreasing solution, weakly alkaline degreasing solution and organic solvent degreasing solution.
Particularly, the degreasing temperature in the step (3) is 42-52 ℃, and the phosphating temperature in the step (4) is 40-44 ℃.
Particularly, the temperature of the oven is 50-60 ℃ when the moisture is dried in the step (5), and the drying time is 15-20 min.
Particularly, the preheating temperature of the metal part in the step (5) is 110-.
Particularly, the temperature during the electrostatic spraying in the step (6) is 175-.
In particular, the curing temperature in the step (7) is 180-200 ℃.
The invention has the beneficial effects that: the method adopts the steps to treat the surface of the metal piece, has good spraying effect on the surface of the metal piece, is convenient to improve the quality and the performance of the metal piece, prolongs the service life, enlarges the application range, and has simple spraying process and convenient operation.
Detailed Description
The invention is further illustrated by the following examples:
example 1
A powder spraying process for surface treatment of metal parts comprises the following steps:
(1) pretreatment of the surface of a metal piece: removing rust spots, metal chips and sand grains on the surface of the metal piece;
(2) cleaning: firstly, cleaning the processed metal piece for the first time by using clean water, and then cleaning for the second time by using hot water to remove surface impurities;
(3) degreasing: soaking the cleaned metal piece into a degreasing solution at a certain temperature for 25min to remove grease on the surface of the metal piece, and cleaning the degreased metal piece for 3min by using pure water to remove residual impurities on the surface;
(4) phosphorization: soaking the degreased metal piece in a phosphating solution for 4min at a certain temperature to form a layer of phosphating film on the surface of the metal piece, and then cleaning the metal piece for 3min by adopting pure water to remove residual phosphating solution on the surface;
(5) drying and preheating: putting the metal piece after phosphating and washing into an oven to dry the surface moisture, and then preheating for 30 min;
(6) spraying: spraying the surface of the metal piece in an electrostatic spraying mode;
(7) and (3) curing: putting the sprayed metal piece into a curing furnace, and curing for 20-25min at a certain temperature;
(8) and (4) checking: the surface of the metal piece is inspected for defects.
Particularly, the degreasing solution in the step (3) is a strongly alkaline degreasing solution.
In particular, the degreasing temperature in the step (3) is 42 ℃, and the phosphating temperature in the step (4) is 40 ℃.
Particularly, the temperature of the oven is 50 ℃ when the moisture is dried in the step (5), and the drying time is 20 min.
In particular, the preheating temperature of the metal part in the step (5) is 110 ℃.
Particularly, the temperature in the electrostatic spraying in the step (6) is 175 ℃, the distance between the metal piece and the spray head is 120mm, and the powder supply amount is 85 g/min.
In particular, the curing temperature in the step (7) is 180 ℃.
Example 2
A powder spraying process for surface treatment of metal parts comprises the following steps:
(1) pretreatment of the surface of a metal piece: removing rust spots, metal chips and sand grains on the surface of the metal piece;
(2) cleaning: firstly, cleaning the processed metal piece for the first time by using clean water, and then cleaning for the second time by using hot water to remove surface impurities;
(3) degreasing: soaking the cleaned metal piece into a degreasing solution for 35min at a certain temperature to remove grease on the surface of the metal piece, and cleaning the degreased metal piece for 5min by using pure water to remove residual impurities on the surface;
(4) phosphorization: soaking the degreased metal piece in a phosphating solution for 6min at a certain temperature to form a layer of phosphating film on the surface of the metal piece, and then cleaning the metal piece for 5min by adopting pure water to remove residual phosphating solution on the surface;
(5) drying and preheating: putting the metal piece after phosphating and washing into an oven to dry the surface moisture, and then preheating for 30 min;
(6) spraying: spraying the surface of the metal piece in an electrostatic spraying mode;
(7) and (3) curing: putting the sprayed metal piece into a curing furnace, and curing for 25min at a certain temperature;
(8) and (4) checking: the surface of the metal piece is inspected for defects.
Particularly, the degreasing solution in the step (3) is one of strongly alkaline degreasing solution, weakly alkaline degreasing solution and organic solvent degreasing solution.
In particular, the degreasing temperature in the step (3) is 52 ℃, and the phosphating temperature in the step (4) is 44 ℃.
Particularly, the temperature of the oven is 60 ℃ when the moisture is dried in the step (5), and the drying time is 15 min.
In particular, the preheating temperature of the metal part in the step (5) is 150 ℃.
Particularly, the temperature in the electrostatic spraying in the step (6) is 185 ℃, the distance between the metal piece and the spray head is 180mm, and the powder supply amount is 150 g/min.
In particular, the curing temperature in the step (7) is 200 ℃.
Example 3
A powder spraying process for surface treatment of metal parts comprises the following steps:
(1) pretreatment of the surface of a metal piece: removing rust spots, metal chips and sand grains on the surface of the metal piece;
(2) cleaning: firstly, cleaning the processed metal piece for the first time by using clean water, and then cleaning for the second time by using hot water to remove surface impurities;
(3) degreasing: soaking the cleaned metal piece into a degreasing solution for 30min at a certain temperature to remove grease on the surface of the metal piece, and cleaning the degreased metal piece for 4min by using pure water to remove residual impurities on the surface;
(4) phosphorization: soaking the degreased metal piece in a phosphating solution for 5min at a certain temperature to form a layer of phosphating film on the surface of the metal piece, and then cleaning the metal piece for 4min by adopting pure water to remove residual phosphating solution on the surface;
(5) drying and preheating: putting the metal piece after phosphating and washing into an oven to dry the surface moisture, and then preheating for 30 min;
(6) spraying: spraying the surface of the metal piece in an electrostatic spraying mode;
(7) and (3) curing: putting the sprayed metal piece into a curing furnace, and curing for 23min at a certain temperature;
(8) and (4) checking: the surface of the metal piece is inspected for defects.
Particularly, the degreasing solution in the step (3) is one of strongly alkaline degreasing solution, weakly alkaline degreasing solution and organic solvent degreasing solution.
In particular, the degreasing temperature in the step (3) is 47 ℃, and the phosphating temperature in the step (4) is 42 ℃.
Particularly, the temperature of the oven is 55 ℃ when the moisture is dried in the step (5), and the drying time is 17 min.
In particular, the preheating temperature of the metal part in the step (5) is 130 ℃.
Particularly, the temperature in the electrostatic spraying in the step (6) is 180 ℃, the distance between the metal piece and the spray head is 150mm, and the powder supply amount is 117 g/min.
In particular, the curing temperature in the step (7) is 190 ℃.
The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various modifications, which may be made by the methods and technical solutions of the invention, or may be applied to other applications without modification.
Claims (7)
1. A powder spraying process for surface treatment of metal parts is characterized by comprising the following steps:
(1) pretreatment of the surface of a metal piece: removing rust spots, metal chips and sand grains on the surface of the metal piece;
(2) cleaning: firstly, cleaning the processed metal piece for the first time by using clean water, and then cleaning for the second time by using hot water to remove surface impurities;
(3) degreasing: immersing the cleaned metal piece into a degreasing solution at a certain temperature for 25-35min to remove grease on the surface of the metal piece, and cleaning the degreased metal piece for 3-5min by using pure water to remove residual impurities on the surface;
(4) phosphorization: soaking the degreased metal piece in phosphating solution for 4-6min at a certain temperature to form a layer of phosphating film on the surface of the metal piece, and then cleaning the metal piece for 3-5min by using pure water to remove residual phosphating solution on the surface;
(5) drying and preheating: putting the metal piece after phosphating and washing into an oven to dry the surface moisture, and then preheating for 30 min;
(6) spraying: spraying the surface of the metal piece in an electrostatic spraying mode;
(7) and (3) curing: putting the sprayed metal piece into a curing furnace, and curing for 20-25min at a certain temperature;
(8) and (4) checking: the surface of the metal piece is inspected for defects.
2. The powder spray coating process for surface treatment of metal parts according to claim 1, wherein the degreasing solution in the step (3) is one of strongly alkaline degreasing solution, weakly alkaline degreasing solution and organic solvent degreasing solution.
3. The powder spray coating process for surface treatment of metal member according to claim 1, wherein the degreasing temperature in step (3) is 42-52 ℃ and the phosphating temperature in step (4) is 40-44 ℃.
4. The powder spray coating process for surface treatment of metal parts according to claim 1, wherein the drying temperature of the oven for drying water in the step (5) is 50-60 ℃ and the drying time is 15-20 min.
5. The powder spray coating process for surface treatment of metal member as claimed in claim 1, wherein the preheating temperature of the metal member in the step (5) is 110-150 ℃.
6. The powder spraying process for the surface treatment of a metal member as claimed in claim 1, wherein the temperature during the electrostatic spraying in the step (6) is 175-185 ℃, the distance between the metal member and the nozzle is 120-180mm, and the powder supply amount is 85-150 g/min.
7. The powder spray coating process for surface treatment of metal member as claimed in claim 1, wherein the curing temperature in the step (7) is 180-200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548229.0A CN112742685A (en) | 2020-12-24 | 2020-12-24 | Powder spraying process for surface treatment of metal piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548229.0A CN112742685A (en) | 2020-12-24 | 2020-12-24 | Powder spraying process for surface treatment of metal piece |
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| CN112742685A true CN112742685A (en) | 2021-05-04 |
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| CN202011548229.0A Withdrawn CN112742685A (en) | 2020-12-24 | 2020-12-24 | Powder spraying process for surface treatment of metal piece |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127070A (en) * | 2015-07-27 | 2015-12-09 | 安徽墙煌彩铝科技有限公司 | Technology method for carrying out electrostatic spraying on surface of aluminum product |
| CN105396764A (en) * | 2015-12-17 | 2016-03-16 | 滁州市友邦涂装有限公司 | Pretreatment process for electrostatic powder spraying workpiece |
| CN105598015A (en) * | 2015-12-17 | 2016-05-25 | 滁州市友邦涂装有限公司 | Electrostatic powder spraying technology for metal parts |
-
2020
- 2020-12-24 CN CN202011548229.0A patent/CN112742685A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127070A (en) * | 2015-07-27 | 2015-12-09 | 安徽墙煌彩铝科技有限公司 | Technology method for carrying out electrostatic spraying on surface of aluminum product |
| CN105396764A (en) * | 2015-12-17 | 2016-03-16 | 滁州市友邦涂装有限公司 | Pretreatment process for electrostatic powder spraying workpiece |
| CN105598015A (en) * | 2015-12-17 | 2016-05-25 | 滁州市友邦涂装有限公司 | Electrostatic powder spraying technology for metal parts |
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Application publication date: 20210504 |
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