CN100571967C - The production method of condenser drying drum body for automobile air conditioner - Google Patents
The production method of condenser drying drum body for automobile air conditioner Download PDFInfo
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- CN100571967C CN100571967C CNB2008100250552A CN200810025055A CN100571967C CN 100571967 C CN100571967 C CN 100571967C CN B2008100250552 A CNB2008100250552 A CN B2008100250552A CN 200810025055 A CN200810025055 A CN 200810025055A CN 100571967 C CN100571967 C CN 100571967C
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Abstract
The present invention relates to auto parts and components and make the field, is the manufacture method of condenser drying drum body for automobile air conditioner specifically.After the blank pickling, carry out the fluorine silicidation; Use aqueous solution of sodium stearate as saponification liquor; Coat the hybrid lubricant of odium stearate and lauryl alcohol before the extruding in the upper end of blank; Carrying out oil removing and oxide removal bright dipping after Vehicle Processing handles.Use this method can production draw ratio greater than the condenser drying drum body for automobile air conditioner of 10 aluminum alloy material, and can eliminate extrusion process convexity die drawing hair, cleaning back part burnt hair phenomenon, and can remove impurity after strengthening body particle and aluminum alloy surface alkali cleaning in the middle of the aluminum alloy surface copper-containing metal and handling, the aluminium oxide thin layer that generate surfacing, has reactivity, thus welding performance improved.
Description
Technical field:
The present invention relates to the auto parts and components field, especially the manufacture method of condenser drying drum body for automobile air conditioner.
Background technology:
The conventional process flow of using extrusion to make aluminium-alloy pipe is: fracture, annealing, oil removing, pickling, change, saponification, cold extrusion, Vehicle Processing, clean, dry.Wherein the technology of annealing stage as shown in Figure 1.This technology since behind the rough annealing material hardness still higher, problems such as sideslip, wall thickness are inconsistent, the punch that fractures appear during extruding easily, when the pipe draw ratio was big, this problem was especially outstanding.
In the saponification stage, conventional method is blank to be put into the cylinder that zinc stearate is housed rolled 15～30 minutes.This method is lubricated processing to the surface, still has serious sticking to mould, punch plucking problem in the extruding, needs often to revise punch.
At wash phase, conventional method uses the mixed solution of sodium phosphate, sulfuric acid and nitric acid to carry out pickling.After using this technology to clean, oxidation burnt hair problem can appear in element storage part a period of time.
Summary of the invention
Deficiency at existing condenser drying drum body for automobile air conditioner production method, the object of the present invention is to provide a kind of production method of condenser drying drum body for automobile air conditioner, use this method can production draw ratio (L/D) greater than 10 elongated tubular, and sideslip can not appear during extruding, wall thickness is inconsistent, problems such as punch and element storage part rear oxidation burnt hair fracture.
For achieving the above object, technical scheme of the present invention is as follows:
The production method of condenser drying drum body for automobile air conditioner comprises fracture, end face processing, annealing, oil removing, pickling, saponification, extruding, Vehicle Processing, it is characterized in that: carry out the fluorine silicidation after the blank pickling; Described saponification uses aqueous solution of sodium stearate as saponification liquor; Coat the hybrid lubricant of odium stearate and lauryl alcohol before the extruding in the upper end of blank; Carrying out oil removing and oxide removal bright dipping after Vehicle Processing handles.
At annealing stage, the annealing process of use is as follows:
A, blank is raised to 400～450 ℃ with furnace temperature;
B, insulation 1～3 hour;
C, furnace temperature is risen to 500～550 ℃;
D, insulation 4～6 hours;
E, cool to 140～160 ℃ with the furnace after air cooling.
In the fluorine silicidation stage, method is that part is put into mass percent is that the mixed liquor of 14: 1: 500 prodan, zinc fluoride and water is heated to boiling 5～10 minutes.
In the saponification stage, the saponification liquor of use is that mass percent is 0.5～0.9% aqueous solution of sodium stearate.
At the odium stearate that blank end was coated with and the hybrid lubricant of lauryl alcohol, its mass percent ratio is 8～12: 1 before the extruding.
The processing stage of oxide removal and bright dipping, adopt following technology:
A, handled 5～10 minutes with the mixed solution of sodium fluoride, ferric sulfate and nitric acid, mixed solution is the ratios preparation that adds 4～6 gram sodium fluorides and 90～110 gram ferric sulfate in 30% the nitric acid according to every mass per liter percentage;
B, handled 2～5 minutes with the mixed solution of sodium fluoride and nitric acid, mixed solution is the ratio preparation that adds 0.4～0.6g sodium fluoride in 1% the nitric acid according to every mass per liter percentage.
The invention has the beneficial effects as follows: use this method can production draw ratio greater than 10 aluminium alloy automobile air conditioning condenser cylindrical body of drying cylinder, and can eliminate extrusion process convexity die drawing hair, cleaning back part burnt hair phenomenon, and can remove impurity after strengthening body particle and aluminum alloy surface alkali cleaning in the middle of the aluminum alloy surface copper-containing metal and handling, the aluminium oxide thin layer that generate surfacing, has reactivity, thus welding performance improved.
Description of drawings
Fig. 1 is annealing process figure of the prior art;
Fig. 2 is the annealing process figure among the present invention.
The specific embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention:
Embodiment one:
(1) fracture: according to product requirement, the blank of intercepting Len req on the aluminium alloy bar;
(2) face work is processed the blank both ends of the surface, makes end face and material axis normal;
(3) annealing: the annealing process that in the accompanying drawing is blank.At first blank is warmed up to 400 ℃ of insulations two hours with stove, with 2 hours furnace temperature is raised to 500 ℃ then, continue insulation 6 hours, air cooling after last blank is cooled to 150 ℃ with stove;
(4) oil removing: the sodium hydroxide solution with 50g/L was handled 4 minutes at 60 ℃;
(5) pickling: the nitric acid with 1/10 and the mixed solution of hydrofluoric acid are handled 2min;
(6) fluorine silicidation: at first prepare fluorine silicidation liquid, treatment fluid is mixed by prodan, zinc fluoride and water, and compound method is: add 28 gram prodans and 2 gram zinc fluorides in 1 premium on currency.Blank is joined in the treatment fluid, and heat treated liquid was handled 10 minutes to boiling then;
(7) saponification: will be through the blank of fluorine silicidation, put into mass percent again and be 0.6% aqueous solution of sodium stearate, be heated to 65 ℃, handled 10 minutes;
(8) extruding: will coat the hybrid lubricant of odium stearate and lauryl alcohol, wherein odium stearate through the blank upper end that saponification is handled: lauryl alcohol=10: 1; To coat the blank extrusion modling then;
(9) Vehicle Processing: will machine through the part of extrusion modling;
(10) oil removing: the part after the Vehicle Processing is put into the sodium hydroxide solution of 40 grams per liters, be heated to 60 ℃, oil removal treatment 3 minutes;
(11) oxide removal bright dipping: at first, to handle 7 minutes through the mixed solution that the part of oil removal treatment is put into sodium fluoride, ferric sulfate and nitric acid, in the mixed solution according to following ratio preparation: every mass per liter percentage is to add 5 gram sodium fluorides and 100 gram ferric sulfate in 30% the nitric acid; Secondly, will handle 4 minutes through the salpeter solution that the part of above-mentioned processing is put into sodium fluoride again, the salpeter solution of sodium fluoride is prepared according to following ratio: every mass per liter percentage is adding 0.4g sodium fluoride in 1% the nitric acid.
Embodiment two:
(1) fracture: according to product requirement, the blank of intercepting Len req on the aluminium alloy bar;
(2) face work is processed the blank both ends of the surface, makes end face and material axis normal;
(3) annealing: the annealing process that in the accompanying drawing is blank.At first blank is warmed up to 450 ℃ of insulations two hours with stove; With 2 hours furnace temperature is raised to 550 ℃ of follow-up continuations of insurance temperature 5 hours then, be cooled to 150 ℃ with stove after air cooling;
(4) oil removing: the sodium hydroxide solution with 50g/L was handled 4 minutes at 60 ℃;
(5) pickling: the nitric acid with 1/10 and the mixed solution of hydrofluoric acid are handled 2min;
(6) fluorine silicidation: at first prepare fluorine silicidation liquid, treatment fluid is mixed by prodan, zinc fluoride and water, and compound method is: add 28 gram prodans and 2 gram zinc fluorides in 1 premium on currency.Blank is joined in the treatment fluid, and heat treated liquid was handled 10 minutes to boiling then;
(7) saponification: will be through the blank of fluorine silicidation, put into mass percent again and be 0.8% aqueous solution of sodium stearate, be heated to 65 ℃, handled 10 minutes;
(8) extruding: will coat the hybrid lubricant of odium stearate and lauryl alcohol, wherein odium stearate through the blank upper end that saponification is handled: lauryl alcohol=11: 1; To coat the blank extrusion modling then;
(9) Vehicle Processing: will machine through the part of extrusion modling;
(10) oil removing: the part after the Vehicle Processing is put into the sodium hydroxide solution of 50 grams per liters, be heated to 60 ℃, oil removal treatment 3 minutes;
(11) oxide removal bright dipping: at first, to handle 7 minutes through the mixed solution that the part of oil removal treatment is put into sodium fluoride, ferric sulfate and nitric acid, in the mixed solution according to following ratio preparation: every mass per liter percentage is to add 6 gram sodium fluorides and 105 gram ferric sulfate in 30% the nitric acid; Secondly, will handle 4 minutes through the salpeter solution that the part of above-mentioned processing is put into sodium fluoride again, the salpeter solution of sodium fluoride is prepared according to following ratio: every mass per liter percentage is adding 0.6g sodium fluoride in 1% the nitric acid.
Claims (4)
1, the production method of condenser drying drum body for automobile air conditioner comprises fracture, end face processing, annealing, oil removing, pickling, saponification, extruding, Vehicle Processing, it is characterized in that: carry out the fluorine silicidation after the blank pickling; Described saponification uses aqueous solution of sodium stearate as saponification liquor; Coat the hybrid lubricant of odium stearate and lauryl alcohol before the extruding in the upper end of blank; Carrying out oil removing and oxide removal bright dipping after Vehicle Processing handles; Described annealing process, its step is as follows:
A, blank is raised to 400～450 ℃ with furnace temperature;
B, insulation 1～3 hour;
C, furnace temperature is risen to 500～550 ℃;
D, insulation 4～6 hours;
E, cool to 140～160 ℃ with the furnace after air cooling;
Described oxide removal bright dipping is handled and is adopted following technology:
A, handled 5～10 minutes with the mixed solution of sodium fluoride, ferric sulfate and nitric acid, the proportioning of mixed solution is: every mass per liter percentage is to add 4～6 gram sodium fluorides and 90～110 gram ferric sulfate in 30% the salpeter solution;
B, handled 2～5 minutes with the mixed solution of sodium fluoride and nitric acid, the proportioning of mixed solution is: every mass per liter percentage is the sodium fluoride that adds 0.4～0.6g in 1% the salpeter solution.
2, the production method of condenser drying drum body for automobile air conditioner according to claim 1 is characterized in that: described fluorine silicidation is that part is put into mass percent is 27～29: 1.5～3: the mixed liquor of 1000 prodan, zinc fluoride and water is heated to boiling 5～10 minutes.
3, the production method of condenser drying drum body for automobile air conditioner according to claim 1 is characterized in that: described saponification liquor is that mass percent is 0.5～0.9% aqueous solution of sodium stearate.
4, the production method of condenser drying drum body for automobile air conditioner according to claim 1 is characterized in that: the proportioning of described odium stearate and lauryl alcohol is 8～12: 1.
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| CNB2008100250552A CN100571967C (en) | 2008-04-21 | 2008-04-21 | The production method of condenser drying drum body for automobile air conditioner |
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| CN100571967C true CN100571967C (en) | 2009-12-23 |
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| CN107250433B (en) * | 2014-12-29 | 2020-04-24 | 深圳市恒兆智科技有限公司 | Film forming agent for aluminum material stretching |
| WO2016106525A1 (en) * | 2014-12-29 | 2016-07-07 | 深圳市恒兆智科技有限公司 | Process for film for aluminum tube drawing and application of said process |
| CN104668300B (en) * | 2015-01-30 | 2018-04-27 | 深圳市江为五金螺丝有限公司 | Aluminum alloy extrusion processing technology |
| CN104741873A (en) * | 2015-01-30 | 2015-07-01 | 深圳市江为五金螺丝有限公司 | Numerical control extrusion process |
| CN104759850B (en) * | 2015-04-03 | 2017-01-04 | 无锡派克新材料科技股份有限公司 | A kind of aluminium alloy height barrier part processing technique |
| CN104971957A (en) * | 2015-07-15 | 2015-10-14 | 上海交通大学 | Extrusion moulding method of pure platinum cupped utensil |
| WO2020066003A1 (en) * | 2018-09-28 | 2020-04-02 | 三菱電機株式会社 | Refrigerating cycle apparatus |
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