CN105689242A - Spraying method for aluminum alloy profile frame used for automobile - Google Patents
Spraying method for aluminum alloy profile frame used for automobile Download PDFInfo
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- CN105689242A CN105689242A CN201410700096.2A CN201410700096A CN105689242A CN 105689242 A CN105689242 A CN 105689242A CN 201410700096 A CN201410700096 A CN 201410700096A CN 105689242 A CN105689242 A CN 105689242A
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- aluminum alloy
- profile frame
- alloy profile
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Abstract
The invention discloses a spraying method for an aluminum alloy profile frame used for an automobile. The spraying method is characterized by comprising the following steps that (1) an aluminum alloy profile frame blank is manufactured; (2) the surface of the aluminum alloy profile frame is subjected to deoiling; (3) moisture on the surface of the aluminum alloy profile frame is removed by hot wind; (4) atomized liquid is sprayed onto the surface of the aluminum alloy profile frame; and (5) electrostatic powder is sprayed. According to the spraying method, after the aluminum alloy profile frame blank is manufactured, the surface of the aluminum alloy profile frame is subjected to deoiling, and then the electrostatic powder is sprayed; the thickness of a powder coating is controlled reasonably according to the corrosion resistance quality requirements and the surface roughness of a coated piece, and the energy consumption, the waste water draining amount and waste residue discharge amount are reduced; meanwhile, the problem that the electrical conductivity of weld joints of parts is poor, and consequently the coating quality is influenced is solved, so that a light abrasion-resistant aluminum-based composite which is completely suitable for automobile parts is obtained; and the friction coefficient of the composite is 0.35-0.45, and the abrasion amount is smaller than 0.3 g/MJ.
Description
Technical field
The invention belongs to technical field of automobile parts, be specifically related to the spraying method of aluminium alloys for automobile section material framework。
Background technology
Owing to user is to improving constantly that automotive coatings requires, particularly generally require to reach more than 504h to the salt spray resistance of hot rolled plate parts coating, cause the coating process of spraying paint of in the past adopting or dipping lacquer, making product coating quality can not meet requirement for anticorrosion, oneself becomes the development trend of hot rolled plate parts application therefore to adopt powder coating。
Spraying technique be based on the earliest energy-conservation, low consumption, the purpose of low cost and a kind of material of growing up closely forms shape rapid solidification new technique, its ultimate principle: motlten metal or alloy are atomized in an inert atmosphere, form droplet jet stream, inject directly on colder matrix, through clashing into, coalesce, solidifying and form deposit, this deposit can carry out forging, extruding or roll processing immediately, it is also possible to is nearly shape product。In prior art, coating process has a large amount of waste water, the discharge of waste residue, there is also paint film adhesion at some weld seam position of parts poor simultaneously, be easily generated the disadvantage of early stage corrosion。
Summary of the invention
For problems of the prior art, it is an object of the invention to provide
The technical scheme that the present invention takes is:
The spraying method of aluminium alloys for automobile section material framework, it is characterised in that specifically include following steps:
(1) adopt extruder that ingot blank carries out extrusion process, control extrusion temperature 485-490 DEG C, be 20:1 according to extrusion ratio, prepare aluminium alloy extrusions frame base, solid solution 7-8h at 555 DEG C of-560 DEG C of temperature；
(2) aluminium alloy extrusions framework surface carrying out oil removing, adopt the alkaline defatting agent of concentration 3-5%, control temperature 58-62 DEG C, spray processes 5-6min；
(3) aluminium alloy extrusions framework surface moisture content adopts hot blast drying, controls hot blast temperature 118-124 DEG C, blowing mouth wind speed about 20m/s, 10 times/min of cycle-index；
(4) antirust paint is through liquid control valve by nebulizer, keeps jetting height, atomized liquid is sprayed at aluminium alloy extrusions framework surface, adopt radiation heating, control temperature 190-210 DEG C, be incubated 15-22min under the driving of motor；
(5) electrostatic powder coating: dust concentration is controlled at 10g/m3, regulate electrostatic gun powder outlet quantity 80g/min, be 0.8Mpa for powder pressure, be sprayed on aluminium alloy extrusions framework surface, the cold front heavy rain adopting temperature to be 40 DEG C。
Further, in described step (4), jetting height is 50 ~ 200mm, and oblique spray angle degree is 20 ~ 90 DEG C。
The invention have the benefit that
After the present invention prepares aluminium alloy extrusions frame base, aluminium alloy extrusions framework surface is carried out oil removing, carry out electrostatic powder coating again, the thickness with surface roughness conservative control powder coating is required according to by the anticorrosive quality being coated with part, reduce the discharge capacity of energy consumption and waste water, waste residue, also solve parts commissure electric conductivity bad simultaneously, the problem affecting coating quality, its coefficient of friction of light wear-resistant aluminum matrix composite preparing entirely appropriate auto parts and components is 0.35～0.45, and wear extent is less than 0.3g/MJ。
Detailed description of the invention
Embodiment 1
The spraying method of aluminium alloys for automobile section material framework, it is characterised in that specifically include following steps:
(1) adopt extruder that ingot blank carries out extrusion process, control extrusion temperature 490 DEG C, be 20:1 according to extrusion ratio, prepare aluminium alloy extrusions frame base, solid solution 7h at 560 DEG C of temperature；
(2) aluminium alloy extrusions framework surface carrying out oil removing, adopt the alkaline defatting agent of concentration 5%, control temperature 62 DEG C, spray processes 5min；
(3) aluminium alloy extrusions framework surface moisture content adopts hot blast drying, controls hot blast temperature 124 DEG C, blowing mouth wind speed about 20m/s, 10 times/min of cycle-index；
(4) antirust paint is through liquid control valve by nebulizer, keeps jetting height under the driving of motor, and jetting height is 50 ~ 200mm, oblique spray angle degree is 20 ~ 90 DEG C, and atomized liquid is sprayed at aluminium alloy extrusions framework surface, adopts radiation heating, control temperature 210 DEG C, be incubated 15min；
(5) electrostatic powder coating: dust concentration is controlled at 10g/m3, regulate electrostatic gun powder outlet quantity 80g/min, be 0.8Mpa for powder pressure, be sprayed on aluminium alloy extrusions framework surface, the cold front heavy rain adopting temperature to be 40 DEG C。
Embodiment 2
The spraying method of aluminium alloys for automobile section material framework, it is characterised in that specifically include following steps:
(1) adopt extruder that ingot blank carries out extrusion process, control extrusion temperature 485 DEG C, be 20:1 according to extrusion ratio, prepare aluminium alloy extrusions frame base, solid solution 8h at 555 DEG C of temperature；
(2) aluminium alloy extrusions framework surface carrying out oil removing, adopt the alkaline defatting agent of concentration 3%, control temperature 58 DEG C, spray processes 6min；
(3) aluminium alloy extrusions framework surface moisture content adopts hot blast drying, controls hot blast temperature 118 DEG C, blowing mouth wind speed about 20m/s, 10 times/min of cycle-index；
(4) antirust paint is through liquid control valve by nebulizer, keeps jetting height under the driving of motor, and jetting height is 50 ~ 200mm, oblique spray angle degree is 20 ~ 90 DEG C, and atomized liquid is sprayed at aluminium alloy extrusions framework surface, adopts radiation heating, control temperature 190 DEG C, be incubated 22min；
(5) electrostatic powder coating: dust concentration is controlled at 10g/m3, regulate electrostatic gun powder outlet quantity 80g/min, be 0.8Mpa for powder pressure, be sprayed on aluminium alloy extrusions framework surface, the cold front heavy rain adopting temperature to be 40 DEG C。
Embodiment 3
The spraying method of aluminium alloys for automobile section material framework, it is characterised in that specifically include following steps:
(1) adopt extruder that ingot blank carries out extrusion process, control extrusion temperature 488 DEG C, be 20:1 according to extrusion ratio, prepare aluminium alloy extrusions frame base, solid solution 7.5h at 558 DEG C of temperature；
(2) aluminium alloy extrusions framework surface carrying out oil removing, adopt the alkaline defatting agent of concentration 3-5%, control temperature 60 C, spray processes 5.5min；
(3) aluminium alloy extrusions framework surface moisture content adopts hot blast drying, controls hot blast temperature 120 DEG C, blowing mouth wind speed about 20m/s, 10 times/min of cycle-index；
(4) antirust paint is through liquid control valve by nebulizer, keeps jetting height under the driving of motor, and jetting height is 50 ~ 200mm, oblique spray angle degree is 20 ~ 90 DEG C, and atomized liquid is sprayed at aluminium alloy extrusions framework surface, adopts radiation heating, control temperature 200 DEG C, be incubated 20min；
(5) electrostatic powder coating: dust concentration is controlled at 10g/m3, regulate electrostatic gun powder outlet quantity 80g/min, be 0.8Mpa for powder pressure, be sprayed on aluminium alloy extrusions framework surface, the cold front heavy rain adopting temperature to be 40 DEG C。
Claims (2)
1. the spraying method of aluminium alloys for automobile section material framework, it is characterised in that specifically include following steps:
(1) adopt extruder that ingot blank carries out extrusion process, control extrusion temperature 485-490 DEG C, be 20:1 according to extrusion ratio, prepare aluminium alloy extrusions frame base, solid solution 7-8h at 555 DEG C of-560 DEG C of temperature；
(2) aluminium alloy extrusions framework surface carrying out oil removing, adopt the alkaline defatting agent of concentration 3-5%, control temperature 58-62 DEG C, spray processes 5-6min；
(3) aluminium alloy extrusions framework surface moisture content adopts hot blast drying, controls hot blast temperature 118-124 DEG C, blowing mouth wind speed about 20m/s, 10 times/min of cycle-index；
(4) antirust paint is through liquid control valve by nebulizer, keeps jetting height, atomized liquid is sprayed at aluminium alloy extrusions framework surface, adopt radiation heating, control temperature 190-210 DEG C, be incubated 15-22min under the driving of motor；
(5) electrostatic powder coating: dust concentration is controlled at 10g/m3, regulate electrostatic gun powder outlet quantity 80g/min, be 0.8Mpa for powder pressure, be sprayed on aluminium alloy extrusions framework surface, the cold front heavy rain adopting temperature to be 40 DEG C。
2. the spraying method of aluminium alloys for automobile section material framework according to claim 1, it is characterised in that in described step (4), jetting height is 50 ~ 200mm, and oblique spray angle degree is 20 ~ 90 DEG C。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700096.2A CN105689242A (en) | 2014-11-28 | 2014-11-28 | Spraying method for aluminum alloy profile frame used for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700096.2A CN105689242A (en) | 2014-11-28 | 2014-11-28 | Spraying method for aluminum alloy profile frame used for automobile |
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| Publication Number | Publication Date |
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| CN105689242A true CN105689242A (en) | 2016-06-22 |
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| CN201410700096.2A Pending CN105689242A (en) | 2014-11-28 | 2014-11-28 | Spraying method for aluminum alloy profile frame used for automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391431A (en) * | 2016-10-13 | 2017-02-15 | 广西大学 | Spraying method of automotive aluminum alloy profile framework |
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2014
- 2014-11-28 CN CN201410700096.2A patent/CN105689242A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391431A (en) * | 2016-10-13 | 2017-02-15 | 广西大学 | Spraying method of automotive aluminum alloy profile framework |
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Application publication date: 20160622 |
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| WD01 | Invention patent application deemed withdrawn after publication |