CN1936063A - Air cooler heat exchange pipe external surface hot-dipping aluminium-plating method - Google Patents
Air cooler heat exchange pipe external surface hot-dipping aluminium-plating method Download PDFInfo
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- CN1936063A CN1936063A CNA2006100965344A CN200610096534A CN1936063A CN 1936063 A CN1936063 A CN 1936063A CN A2006100965344 A CNA2006100965344 A CN A2006100965344A CN 200610096534 A CN200610096534 A CN 200610096534A CN 1936063 A CN1936063 A CN 1936063A
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- heat exchange
- external surface
- plating
- exchange pipe
- air cooler
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Abstract
The invention relates to a hot dip aluminizing method for air cooling heat exchange tube external surface. The technology includes the following steps: the heat exchange tube adopts normal metal material, after taking rolling jointing and molding, taking staving and sealing jointing to the two ends, and connecting vent-pipe on one end, taking pretreatment to the heat exchange tube external surface, taking hot dip aluminizing technology to form a aluminizer on its surface, cutting off the sealing section and vent-pipe, and taking polishing process to the external surface. The invention could decrease the cost to produce heat exchange tube.
Description
Technical field:
The present invention relates to a kind of air cooler heat exchange pipe external surface hot-dipping aluminium-plating method that is used for.
Background technology:
Air cooler be will the inboard medium of pipe heat be delivered to the pipe outside by heat transfer tube and fin, the fluidizing air that is driven by blower fan is with a kind of interchanger of heat diffusion in the atmosphere again.The cross section of air cooler heat exchange pipe is the long flat type structure as shown in Figure 1.The pipe outer surface adopts aluminium plating film usually, has the easily characteristics of welding of protection against corrosion.At present air cooler heat exchange pipe generally adopts the single face metallic substance roll extrusion welding fabrication of aluminizing, and manufacturing cost is higher.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of air cooler heat exchange pipe external surface hot-dipping aluminium-plating method of low cost of manufacture is provided.
The object of the present invention is achieved like this: a kind of air cooler heat exchange pipe external surface hot-dipping aluminium-plating method, the concrete processing step that it is characterized in that this method is as follows: heat transfer tube adopts ordinary metallic material, behind the roll extrusion welding fabrication, its two ends are flattened and seal welding, and at one end vapor pipe is gone up in welding, the heat exchanging tube outer surface carries out the preceding pre-treatment of hot dip aluminum plating again, carry out hot dipping aluminium plating technology then, make heat exchange pipe external surface form one deck aluminium plating film, cut away the heat transfer tube two ends again and flatten seal section and ware-ejecting-tube, exchange heat pipe at last and carry out school type and the processing of outside surface polishing.
Compare with adopting the aluminize air cooler heat exchange pipe of material of single face, use the present invention to reduce the preparation cost of heat transfer tube.
Description of drawings
Fig. 1 is the sectional view of air cooler heat exchange pipe of the present invention.
Fig. 2 flattens and the seal welding structure iron the air cooler heat exchange pipe two ends for the present invention.
Fig. 3 is the A-A enlarged view of Fig. 2.
Among the figure: flatten section seal welding section 1, heat transfer tube 2, eduction pipe 3, flatten section seal welding section 4.
Embodiment
The present invention is a kind of air cooler heat exchange pipe external surface hot-dipping aluminium-plating method, its processing method is: heat transfer tube adopts ordinary metallic material, behind the roll extrusion welding fabrication, its two ends 1,4 is flattened and seal welding, and at one end vapor pipe 3 is gone up in welding, and its structure is shown in Fig. 2,3.Exchange the pre-treatment before heat pipe 2 outside surfaces carry out hot dip aluminum plating again, carry out hot dipping aluminium plating technology then, make heat exchange pipe external surface form one deck aluminium plating film, cut away the heat transfer tube two ends again and flatten seal section and ware-ejecting-tube, exchange heat pipe at last and carry out school type and the processing of outside surface polishing.
Pre-treatment before the described hot dip aluminum plating comprises skimming treatment, processing of rust removing and plating assistant agent processing.Wherein skimming treatment is meant: with concentration is that 10～15% caustic soda is heated to 60～90 ℃, soaks 20～40 minutes, carries out rinsing 3～5 minutes with clear water; Processing of rust removing is meant: the chlorohydric acid pickling workpiece of usefulness concentration 10～15% 5～20 minutes, and string is moving up and down in acid cleaning process, shortens the pickling time, carries out rinsing 3～5 minutes with clear water at last; Plating assistant agent is handled and to be meant the settled solution made from the aluminum fluoride of my Repone K of concentration 30～55%, 20～45% sodium-chlor, 20～40% sodium aluminum fluoride and 10～30%, is heated to 60～80 ℃, soaks 5～20 minutes, then processing is dried on the surface.
Described hot dipping aluminium plating technology is meant: 1A97 aluminium is heated to 740 ℃ ± 5 ℃, add 10% zinc, the workpiece of handling well was put into aluminum pot 1.0 minutes, string is mentioned workpiece moving 3～5 times up and down simultaneously, when putting into and promote, workpiece need tilt 5～10 °, 0.8 meter/minute of pulling speed is placed on and naturally cools to room temperature on the smooth worktable and get final product.
Claims (3)
1, a kind of air cooler heat exchange pipe external surface hot-dipping aluminium-plating method, it is characterized in that this method comprises following processing step: heat transfer tube adopts ordinary metallic material, behind the roll extrusion welding fabrication, its two ends are flattened and seal welding, and at one end vapor pipe is gone up in welding, the heat exchanging tube outer surface carries out the preceding pre-treatment of hot dip aluminum plating again, carry out hot dipping aluminium plating technology then, make heat exchange pipe external surface form one deck aluminium plating film, cut away the heat transfer tube two ends again and flatten seal section and ware-ejecting-tube, exchange heat pipe at last and carry out school type and the processing of outside surface polishing.
2, a kind of air cooler heat exchange pipe external surface hot-dipping aluminium-plating method according to claim 1, it is characterized in that: the pre-treatment that described heat exchanging tube outer surface carries out before the hot dip aluminum plating comprises skimming treatment, processing of rust removing and plating assistant agent processing successively, described skimming treatment is meant: with concentration is that 10～15% caustic soda is heated to 60～90 ℃, soaked 20～40 minutes, and carried out rinsing 3～5 minutes with clear water; Processing of rust removing is meant: the chlorohydric acid pickling workpiece of usefulness concentration 10～15% 5～20 minutes, and string is moving up and down in acid cleaning process, carries out rinsing 3～5 minutes with clear water at last; Plating assistant agent is handled and to be meant the settled solution made from the aluminum fluoride of my Repone K of concentration 30～55%, 20～45% sodium-chlor, 20～40% sodium aluminum fluoride and 10～30%, is heated to 60～80 ℃, soaks 5～20 minutes, then processing is dried on the surface.
3, a kind of air cooler heat exchange pipe external surface hot-dipping aluminium-plating method according to claim 1 and 2, it is characterized in that: describedly pretreated air cooler heat exchange pipe external surface is carried out hot dipping aluminium plating technology be meant: aluminium is heated to 740 ℃ ± 5 ℃, add 8～12% zinc, the workpiece of handling well was put into aluminum pot 0.8～1.2 minute, string is mentioned workpiece moving 3～5 times up and down simultaneously, when putting into and promote, workpiece need tilt 5～10 °, 0.6～1 meter/minute of pulling speed is placed on and naturally cools to room temperature on the smooth worktable and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100965344A CN1936063A (en) | 2006-09-29 | 2006-09-29 | Air cooler heat exchange pipe external surface hot-dipping aluminium-plating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100965344A CN1936063A (en) | 2006-09-29 | 2006-09-29 | Air cooler heat exchange pipe external surface hot-dipping aluminium-plating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1936063A true CN1936063A (en) | 2007-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100965344A Pending CN1936063A (en) | 2006-09-29 | 2006-09-29 | Air cooler heat exchange pipe external surface hot-dipping aluminium-plating method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100446918C (en) * | 2007-04-20 | 2008-12-31 | 江苏双良空调设备股份有限公司 | Method for brazing aluminium parts on the carbon steel part surface and aluminizing anti-rust on the non brazing surface |
| CN101440467B (en) * | 2008-12-12 | 2010-06-02 | 南车四方车辆有限公司 | Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment |
| CN101338406B (en) * | 2008-08-15 | 2010-10-06 | 上海永丰热镀锌有限公司 | Hot dip galvanizing process for hollow superposed steel products |
| CN102732815A (en) * | 2012-07-13 | 2012-10-17 | 耿璐 | Surface treatment method of cavity steel structure rod piece |
| CN102766836A (en) * | 2012-07-31 | 2012-11-07 | 耿璐 | Surface treatment method of steel structure rod piece with cavity |
| CN104386043A (en) * | 2014-11-20 | 2015-03-04 | 绵阳精合机电科技有限公司 | Automobile water spray tank with built-in rust-proof anticorrosive layer and rust-proof anticorrosive layer arranging method |
-
2006
- 2006-09-29 CN CNA2006100965344A patent/CN1936063A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100446918C (en) * | 2007-04-20 | 2008-12-31 | 江苏双良空调设备股份有限公司 | Method for brazing aluminium parts on the carbon steel part surface and aluminizing anti-rust on the non brazing surface |
| CN101338406B (en) * | 2008-08-15 | 2010-10-06 | 上海永丰热镀锌有限公司 | Hot dip galvanizing process for hollow superposed steel products |
| CN101440467B (en) * | 2008-12-12 | 2010-06-02 | 南车四方车辆有限公司 | Protecting method for metal component screwed hole in hot-dip galvanizing antiseptic treatment |
| CN102732815A (en) * | 2012-07-13 | 2012-10-17 | 耿璐 | Surface treatment method of cavity steel structure rod piece |
| CN102766836A (en) * | 2012-07-31 | 2012-11-07 | 耿璐 | Surface treatment method of steel structure rod piece with cavity |
| CN104386043A (en) * | 2014-11-20 | 2015-03-04 | 绵阳精合机电科技有限公司 | Automobile water spray tank with built-in rust-proof anticorrosive layer and rust-proof anticorrosive layer arranging method |
| CN104386043B (en) * | 2014-11-20 | 2017-05-17 | 绵阳精合机电科技有限公司 | Automobile water spray tank with built-in rust-proof anticorrosive layer and rust-proof anticorrosive layer arranging method |
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