CN107541738A - Pre-welding cleaning process for refrigerator compressor shell - Google Patents
Pre-welding cleaning process for refrigerator compressor shell Download PDFInfo
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- CN107541738A CN107541738A CN201710578960.XA CN201710578960A CN107541738A CN 107541738 A CN107541738 A CN 107541738A CN 201710578960 A CN201710578960 A CN 201710578960A CN 107541738 A CN107541738 A CN 107541738A
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- refrigerator compressor
- sodium
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- 238000004140 cleaning Methods 0.000 title claims abstract description 57
- 238000003466 welding Methods 0.000 title abstract description 14
- 238000000034 method Methods 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 24
- 238000005238 degreasing Methods 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000005237 degreasing agent Methods 0.000 claims description 19
- 239000013527 degreasing agent Substances 0.000 claims description 19
- -1 alcohol ethoxyl compounds Chemical class 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 13
- 239000002736 nonionic surfactant Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- WMGSQTMJHBYJMQ-UHFFFAOYSA-N aluminum;magnesium;silicate Chemical compound [Mg+2].[Al+3].[O-][Si]([O-])([O-])[O-] WMGSQTMJHBYJMQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- 239000004584 polyacrylic acid Substances 0.000 claims description 5
- 108010064470 polyaspartate Proteins 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 239000001509 sodium citrate Substances 0.000 claims description 5
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 5
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 5
- 159000000000 sodium salts Chemical class 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- NASFKTWZWDYFER-UHFFFAOYSA-N sodium;hydrate Chemical compound O.[Na] NASFKTWZWDYFER-UHFFFAOYSA-N 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract 2
- 239000008399 tap water Substances 0.000 abstract 1
- 235000020679 tap water Nutrition 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 6
- 238000005476 soldering Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000004435 Oxo alcohol Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a cleaning process before welding for a refrigerator compressor shell, which comprises the following steps of a) degreasing and cleaning, wherein a degreasing reagent solution is adopted in a cleaning tank to clean parts; b) washing the parts by using tap water for the first time; c) phosphating, namely treating the surface of the part by adopting a phosphating reagent solution at the working temperature of 60-85 ℃ for 2-3 min; d) secondary water washing, namely washing the parts by pure water; e) washing for the third time, and washing the parts by pure water; f) blowing the parts by compressed air, and directly blowing the parts by the compressed air for 0.15-0.2min at room temperature; g) and (2) drying, namely drying the parts at the temperature of 121-.
Description
Technical field
The present invention relates to lower shells of compressors welding field, scavenger before more particularly to a kind of Dimensions Used in Shell of Refrigerator Compressor weldering
Skill.
Background technology
Freezer compressor lower house body needs to weld steel column pin, footing piece, binding post, protective cradle, air intake duct, exhaust
Pipe and process duct, soldering part is more, needs to carry out surface preparation, the cleaning effect of surface preparation to workpiece before welding
Directly affect welding quality.
The content of the invention
The technical problems to be solved by the invention are to provide cleaning before a kind of Dimensions Used in Shell of Refrigerator Compressor weldering, improve welding
Quality, to solve caused above-mentioned multinomial defect in the prior art.
To achieve the above object, the present invention provides following technical scheme, scavenger before a kind of Dimensions Used in Shell of Refrigerator Compressor weldering
Skill, part pretreatment, Chemical cleaning, Chemical cleaning are carried out to lower house body, protective cradle, steel column pin, footing piece, binding post
Using spray mode to be placed on conveying network chain it is up enter piece surface clean, operating pressure 0.1-0.3MPa, specifically
Step is as follows,
A) cleaning by degreasing, part to be cleaned using degreasing agent solution in rinse bath, operating temperature is 61-80 DEG C,
Processing time 2.5-3min；
B) once wash, using running water to Cleaning of Parts, operating temperature is room temperature, processing time 1-1.5min；
C) phosphorating treatment, using phosphorization reagent solution to piece surface processing, operating temperature is 60-85 DEG C, processing time
2-3min；
D) secondary washing, using pure water to Cleaning of Parts, operating temperature is room temperature, processing time 1-1.5min；
E) wash three times, using pure water to Cleaning of Parts, operating temperature is 30-50 DEG C, processing time 1-1.5min；
F) compressed air dries up, at room temperature using compressed air to part blow-through 0.15-0.2min；
G) dry, using hot air circulation at a temperature of 121-150 DEG C to part drying and processing.
Preferably, the step a), c) and e) heated using steam；The step g) uses natural gas indirectly heat.
Preferably, degreasing agent solution 5-10% containing sodium lignin sulfonate, non-hydrate sodium metasilicate 5-10%, sodium carbonate
5-10%, sodium citrate 2-5%, sodium hydroxide 20-25%, aluminium-magnesium silicate 15-20%, poly-aspartate 1-3%, polyacrylic acid
Sodium salt 1-3%, nonionic surfactant 3-8%, pure water surplus.
Preferably, the nonionic surfactant is C10 fat alcohol ethoxyl compounds or C13 carbonyl alcohol ethoxylates
The mixture of compound or both, the proportioning of wherein both mixtures is C10 fat alcohol ethoxyl compounds：C13 oxo-alcohols ethoxies
Based compound is 2:3；C10 fat alcohol ethoxyl compounds：Sodium lignin sulfonate is 1:1；C13 carbonyl alcohol ethoxylates：
Sodium lignin sulfonate is 1:2, mixture：Sodium lignin sulfonate is 3：4.
Preferably, the phosphorization reagent solution is the acid solution of phosphoric acid dihydric salt, and the phosphorization reagent solution is compound
Phosphating solution, containing Fe (H2PO4)215-20%, Mn (H2PO4)215-28%, Zn (H2PO4)215-23%, pure water surplus.
Preferably, the degreasing agent solution free alkalinity is 4-8pt, and the phosphorization reagent solution total acidity is 8-
30pt。
Preferably, in the step 1), air-breather is set to be passed through air in rinse bath.
Preferably, in the step 1), rinse bath sets high energy ultraviolet line apparatus, using purple during cleaning by degreasing
Outside line is irradiated to it.
Beneficial effect using above technical scheme is that welding procedure of the present invention is before welding respectively to lower house sheet
Body, protective cradle, steel column pin, footing piece, binding post carry out Chemical cleaning, and scratch brushing is carried out to air intake duct, blast pipe and process duct
Processing, is handled surface.
The cleaning that workpiece surface is improved by the degreasing agent solution of preparation is washed, and uviol lamp can accelerate grease decomposition,
Workpiece surface phosphatization effect is improved by the phosphorization reagent solution of preparation, significantly improve the compressor housing after welding uses the longevity
Life.
Brief description of the drawings
Fig. 1 is the schematic diagram that surfactant influences on metal surface tension in degreasing agent solution
Embodiment
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1,
Cleaning before a kind of weldering of Dimensions Used in Shell of Refrigerator Compressor, to lower house body, protective cradle, steel column pin, footing piece, connect
Terminal carry out Chemical cleaning, wherein, Chemical cleaning using spray mode to be placed on conveying network chain it is up enter piece surface enter
Row cleaning, operating pressure 0.1MPa, is comprised the following steps that,
A) cleaning by degreasing, part is cleaned using degreasing agent solution in rinse bath, operating temperature is 61 DEG C, is used
Steam heats, and processing time 3min, the degreasing agent solution free alkalinity is 4pt；Air-breather is set to be passed through in rinse bath
Air, rinse bath are set high energy ultraviolet line apparatus, it are irradiated using ultraviolet during cleaning by degreasing；
B) once wash, using running water to Cleaning of Parts, operating temperature is room temperature, processing time 1min；
C) phosphorating treatment, be 60 DEG C to piece surface processing, operating temperature using phosphorization reagent solution, using steam plus
Heat, processing time 3min, the phosphorization reagent solution total acidity are 8pt；
D) secondary washing, using pure water to Cleaning of Parts, operating temperature is room temperature, processing time 1min；
E) wash three times, be 30 DEG C to Cleaning of Parts, operating temperature using pure water, heated using steam, processing time
1.5min；
F) compressed air dries up, at room temperature using compressed air to part blow-through 0.15min；
G) dry, using hot air circulation at a temperature of 121 DEG C to part drying and processing, using natural gas indirectly heat.
Degreasing agent solution containing sodium lignin sulfonate 5%, non-hydrate sodium metasilicate 5%, sodium carbonate 5%, sodium citrate 2%,
Sodium hydroxide 25%, aluminium-magnesium silicate 20%, poly-aspartate 1%, polyacrylic acid sodium salt 1%, nonionic surfactant 5%,
Pure water surplus.
Nonionic surfactant is C10 fat alcohol ethoxyl compounds, C10 fat alcohol ethoxyl compounds：Lignin
Sodium sulfonate is 1:1.
Phosphorization reagent solution is the acid solution of phosphoric acid dihydric salt, and the phosphorization reagent solution is composite phosphorized liquid, containing Fe
(H2PO4)220%th, Mn (H2PO4)215%th, Zn (H2PO4)215%, pure water surplus.
Embodiment 2,
Cleaning before a kind of weldering of Dimensions Used in Shell of Refrigerator Compressor, to lower house body, protective cradle, steel column pin, footing piece, connect
Terminal carries out Chemical cleaning, Chemical cleaning using spray mode to be placed on conveying network chain it is up enter piece surface carry out it is clear
Wash, operating pressure 0.3MPa, comprise the following steps that,
A) cleaning by degreasing, part is cleaned using degreasing agent solution in rinse bath, operating temperature is 80 DEG C, is used
Steam heats, and processing time 2.5min, the degreasing agent solution free alkalinity is 8pt；Air-breather is set to lead in rinse bath
Enter air, rinse bath is set high energy ultraviolet line apparatus, it is irradiated using ultraviolet during cleaning by degreasing；
B) once wash, using running water to Cleaning of Parts, operating temperature is room temperature, processing time 1.5min；
C) phosphorating treatment, be 85 DEG C to piece surface processing, operating temperature using phosphorization reagent solution, using steam plus
Heat, processing time 2min, the phosphorization reagent solution total acidity are 30pt；
D) secondary washing, using pure water to Cleaning of Parts, operating temperature is room temperature, processing time 1.5min；
E) wash three times, be 50 DEG C to Cleaning of Parts, operating temperature using pure water, heated using steam, processing time
1min；
F) compressed air dries up, at room temperature using compressed air to part blow-through 0.2min；
G) dry, using hot air circulation at a temperature of 150 DEG C to part drying and processing, using natural gas indirectly heat.
Degreasing agent solution is containing sodium lignin sulfonate 10%, non-hydrate sodium metasilicate 10%, sodium carbonate 10%, sodium citrate
5%th, sodium hydroxide 20%, aluminium-magnesium silicate 15%, poly-aspartate 3%, polyacrylic acid sodium salt 3%, nonionic surfactant
5%, pure water surplus.
Nonionic surfactant is C13 carbonyl alcohol ethoxylates, C13 carbonyl alcohol ethoxylates：Lignin sulfonic acid
Sodium is 1:2.
Phosphorization reagent solution is the acid solution of phosphoric acid dihydric salt, and the phosphorization reagent solution is composite phosphorized liquid, containing Fe
(H2PO4)220%th, Mn (H2PO4)228%th, Zn (H2PO4)223%, pure water surplus.
Embodiment 3,
Cleaning before a kind of weldering of Dimensions Used in Shell of Refrigerator Compressor, to lower house body, protective cradle, steel column pin, footing piece, connect
Terminal carries out Chemical cleaning, Chemical cleaning using spray mode to be placed on conveying network chain it is up enter piece surface carry out it is clear
Wash, operating pressure 0.2MPa, comprise the following steps that,
A) cleaning by degreasing, part is cleaned using degreasing agent solution in rinse bath, operating temperature is 70 DEG C, is used
Steam heats, and processing time 2.8min, the degreasing agent solution free alkalinity is 6pt；Air-breather is set to lead in rinse bath
Enter air, rinse bath is set high energy ultraviolet line apparatus, it is irradiated using ultraviolet during cleaning by degreasing；
B) once wash, using running water to Cleaning of Parts, operating temperature is room temperature, processing time 1.3min；
C) phosphorating treatment, be 73 DEG C to piece surface processing, operating temperature using phosphorization reagent solution, using steam plus
Heat, processing time 2-3min, the phosphorization reagent solution total acidity are 19pt；
D) secondary washing, using pure water to Cleaning of Parts, operating temperature is room temperature, processing time 1.3min；
E) wash three times, be 40 DEG C to Cleaning of Parts, operating temperature using pure water, heated using steam, processing time
1.3min；
F) compressed air dries up, at room temperature using compressed air to part blow-through 0.18min；
G) dry, using hot air circulation at a temperature of 135 DEG C to part drying and processing, using natural gas indirectly heat.
Degreasing agent solution containing sodium lignin sulfonate 8%, non-hydrate sodium metasilicate 8%, sodium carbonate 8%, sodium citrate 3%,
Sodium hydroxide 23%, aluminium-magnesium silicate 18%, poly-aspartate 2%, polyacrylic acid sodium salt 2%, nonionic surfactant 6%,
Pure water surplus.
Nonionic surfactant is that proportioning is C10 fat alcohol ethoxyl compounds：C13 carbonyl alcohol ethoxylates are
2:3 mixture；Mixture：Sodium lignin sulfonate is 3：4.
Phosphorization reagent solution is the acid solution of phosphoric acid dihydric salt, and the phosphorization reagent solution is composite phosphorized liquid, containing Fe
(H2PO4)218%th, Mn (H2PO4)221%th, Zn (H2PO4)219%, pure water surplus.
As shown in figure 1, the degreasing agent after addition sodium lignin sulfonate, workpiece surface tension force highest, but be not sufficiently stable, wood
Quality sodium sulfonate is anion surfactant, and after with the addition of nonionic surfactant, both are used in mixed way, and ensures workpiece table
Face tension force is high, and stably.
The preferred C10 fat alcohol ethoxyl compounds of nonionic surfactant：C13 carbonyls alcohol ethoxylates are 2:3
Mixture.
This phosphating process uses composite phosphorized liquid, warm type phosphorating treatment in progress, and phosphatization film thickness is 1-7g/m2, solution
The ratio of free acidity and total acidity is 1:(10-15), free acidity is stable, easily grasps, and phosphating time is short, and production efficiency is high,
Corrosion resistance is strong.
The cleaning that workpiece surface is improved by the degreasing agent solution of preparation is washed, and is carried by the phosphorization reagent solution of preparation
High workpiece alramenting effect, significantly improve the service life of the compressor housing after welding.
The selection lower house body that coating color is homogeneous, water stain-free oil-free is rustless and protective cradle are as soldering part, choosing
Taking no white powder, the steel column pin of water stain-free and footing piece, choosing the outer finishing face of pore has scratch brushing vestige as soldering part
Air intake duct, blast pipe and process duct are as soldering part.
Part weld, using projection welding successively by steel column pin, footing piece, binding post, protective cradle, process duct, air intake duct and
Blast pipe is welded to correspondence position on lower house body；Its welding condition is as follows, welding pressure 0.3-0.6Mpa, during precompressed
Between 200-400ms, pressing time 400-600ms, weld interval 200-300ms, dwell time 200ms；After welding treatment, check weldering
Junction outward appearance, purge lower housing cavity surface impurity.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (8)
1. cleaning before a kind of Dimensions Used in Shell of Refrigerator Compressor weldering, first part pretreatment, to lower house body, protective cradle, steel column
Pin, footing piece, binding post carry out Chemical cleaning, it is characterised in that Chemical cleaning is using spray mode to being placed on conveying network chain
The piece surface of upper traveling is cleaned, and operating pressure 0.1-0.3MPa, is comprised the following steps that,
A) cleaning by degreasing, part is cleaned using degreasing agent solution in rinse bath, operating temperature is 61-80 DEG C, place
Manage time 2.5-3min；
B) once wash, using running water to Cleaning of Parts, operating temperature is room temperature, processing time 1-1.5min；
C) phosphorating treatment, using phosphorization reagent solution to piece surface processing, operating temperature is 60-85 DEG C, processing time 2-
3min；
D) secondary washing, using pure water to Cleaning of Parts, operating temperature is room temperature, processing time 1-1.5min；
E) wash three times, using pure water to Cleaning of Parts, operating temperature is 30-50 DEG C, processing time 1-1.5min；
F) compressed air dries up, at room temperature using compressed air to part blow-through 0.15-0.2min；
G) dry, using hot air circulation at a temperature of 121-150 DEG C to part drying and processing.
2. cleaning before Dimensions Used in Shell of Refrigerator Compressor according to claim 1 weldering, it is characterised in that the step a), c)
And e) heated using steam；The step g) uses natural gas indirectly heat.
3. cleaning before Dimensions Used in Shell of Refrigerator Compressor weldering according to claim 1, it is characterised in that the degreasing agent is molten
Liquid 5-10% containing sodium lignin sulfonate, non-hydrate sodium metasilicate 5-10%, sodium carbonate 5-10%, sodium citrate 2-5%, sodium hydroxide
20-25%, aluminium-magnesium silicate 15-20%, poly-aspartate 1-3%, polyacrylic acid sodium salt 1-3%, nonionic surfactant 3-
8%, pure water surplus.
4. cleaning before Dimensions Used in Shell of Refrigerator Compressor weldering according to claim 1, it is characterised in that the non-ionic surface
Activating agent is the mixture of C10 fat alcohol ethoxyl compounds or C13 carbonyl alcohol ethoxylates or both, and wherein both are mixed
The proportioning of compound is C10 fat alcohol ethoxyl compounds：C13 carbonyls alcohol ethoxylates are 2:3；C10 alcohol ethoxies
Compound：Sodium lignin sulfonate is 1:1；C13 carbonyl alcohol ethoxylates：Sodium lignin sulfonate is 1:2, mixture：It is wooden
Plain sodium sulfonate is 3：4.
5. cleaning before Dimensions Used in Shell of Refrigerator Compressor weldering according to claim 1, it is characterised in that the phosphorization reagent is molten
Liquid is the acid solution of phosphoric acid dihydric salt, and the phosphorization reagent solution is composite phosphorized liquid, containing Fe (H2PO4)215-20%, Mn
(H2PO4)215-28%, Zn (H2PO4)215-23%, pure water surplus.
6. cleaning before Dimensions Used in Shell of Refrigerator Compressor weldering according to claim 1, it is characterised in that the degreasing agent is molten
Liquid free alkalinity is 4-8pt, and the phosphorization reagent solution total acidity is 8-30pt.
7. cleaning before being welded according to Dimensions Used in Shell of Refrigerator Compressor according to claim 1, it is characterised in that the step 1)
In, set air-breather to be passed through air in rinse bath.
8. cleaning before being welded according to Dimensions Used in Shell of Refrigerator Compressor according to claim 1, it is characterised in that the step 1)
In, rinse bath sets high energy ultraviolet line apparatus, and it is irradiated using ultraviolet during cleaning by degreasing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578960.XA CN107541738A (en) | 2017-07-17 | 2017-07-17 | Pre-welding cleaning process for refrigerator compressor shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578960.XA CN107541738A (en) | 2017-07-17 | 2017-07-17 | Pre-welding cleaning process for refrigerator compressor shell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112824565A (en) * | 2019-11-21 | 2021-05-21 | 上海海立电器有限公司 | Electrophoretic coating process of compressor |
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2017
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Address after: 333000 No. 1 Changhong Avenue, Jingdezhen High-tech Zone, Jiangxi Province (High-tech Development Zone) Applicant after: Changhong Huayi Compressor Co., Ltd. Address before: 333000 No. 1 Changhong Avenue, Jingdezhen High-tech Zone, Jiangxi Province (High-tech Development Zone) Applicant before: Huayi Compressor Co.,Ltd. |
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