CN1161263A - Aluminium soldering tech. with no shielded gas - Google Patents
Aluminium soldering tech. with no shielded gas Download PDFInfo
- Publication number
- CN1161263A CN1161263A CN 96115205 CN96115205A CN1161263A CN 1161263 A CN1161263 A CN 1161263A CN 96115205 CN96115205 CN 96115205 CN 96115205 A CN96115205 A CN 96115205A CN 1161263 A CN1161263 A CN 1161263A
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- aluminium
- weldment
- soldering
- welding
- 10min
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Abstract
The invented technology coats the flame solder on the welding surface of aluminium product, puts the welding sheet in between and places it in the stove to preheat to 400 +or- 10 deg.C, then rises the temp. quickly to 600 deg.C, to accomplish soldering. Compared with prior art technology, the inert gas shield is saved.
Description
The invention belongs to metal welding techniques, particularly the method for welding of aluminium.
Aluminium is used more and more extensivelyr in the modern industry, it is satisfactory that many equipment and parts adopt aluminium to make effect.Yet the requirement of its technical conditions is higher in the welding of aluminium---particularly in the making of baroque parts integral braze-welded---.As everyone knows, aluminium is in the very easily oxidation of welding temperature lower surface, and oxidized top layer can't be welded.At present, the integral braze-welded of the aluminum products of labyrinth all is with inert gas weldment to be protected down to carry out soldering in stove, and protective gas is argon gas, helium or high-purity (purity 〉=99.999%) nitrogen.Soldering oven roughly is divided into two kinds of closed furnace and open hearths.In sealing during furnace brazing, at first the stove that has sealed to be evacuated, send into protective gas then, the soldering that heats up again, the seal of this stove requires very high, and complicated operation; Its advantage is that production cost is lower, but production efficiency is low, labour intensity is big, can't realize the automation production in enormous quantities, can only use in small-scale production.When the open type furnace brazing, earlier air displacement in the stove is clean with high pure nitrogen, then brazing process all to lead to high purity nitrogen from start to finish, to guarantee the quality of first oxygen soldering; Its advantage is automaticity height, production efficiency height, and shortcoming is to guarantee a large amount of high pure nitrogen supplies, cost costliness.
The purpose of this invention is to provide a kind of high-quality under the inert gas shielding, integral braze-welded technology of high efficiency aluminium of need not.
Usually employed aluminium welding agent in flame welding, its fusion temperature is 430 ℃, can reach about 10min to the guard time of aluminium solder side; Present employed weld tabs is 600 ℃ of following melt fluidity the bests.Therefore basic point of the present invention is: will weld body be lower than rapid under the welding agent fusion temperature (about 400 ℃) (≤10min) temperature is risen to 600 ℃, can realize aluminium integral braze-welded under unprotect gas.Its concrete grammar is: at first will weld body and coat on flame welding agent, the folder weld tabs and fixing appropriate, and go into stove and it is preheated to 400 ± 10 ℃ promotes furnace temperature then rapidly, cooling after welding body temperature reaches 605 ± 5 ℃ in 10min, its welding rate＞98%.Optimum method is that soldering oven is made two sections stoves, and leading portion is a preheating section, can make weldment be preheating to 400 ± 10 ℃; The back segment furnace temperature is 800～900 ℃, can make weldment reach 605 ± 5 ℃ of weldments in 10min and transmit automatically.This open hearth does not need high pure nitrogen protection just can realize serialization soldering aluminium portion, device, also can protect welding rate＞98%.
The characteristics of maximum of the present invention are: broken through the technical limitations of the integral braze-welded necessary blanketing with inert gas of aluminium in the prior art, proposed just can realize the method that aluminium is integral braze-welded without gas shield, obtained low-cost, high efficiency effect.
Example 1
The fine aluminium soldering.The weldment face of weld is all coated flame welding welding agent, weld tabs and fix on the folder with anchor clamps.Be placed on preheating in the electric furnace, when treating that the weldment temperature reaches 400 ℃, rapidly it be transferred in 800 ℃ the electric furnace, the 9min weldment is warming up to 600 ℃, and take out the back.Weld intact.
Example 2
Air conditioner for automobile evaporimeter (rustproof aluminum alloy L3 Y2) is made.Use two sections open type electric furnaces, heating power 45kw, the weldment chain transmits, and transfer rate, furnace temperature, weldment temperature are all automatic control.Weldment is coated with welding agent, folder weld tabs, anchor clamps are fastening.Going into stove transmission etc. is all the streamline serialization and produces.Preheating section weldment control temperature is to reach back segment (800 ℃ ± 10 ℃ of back segment furnace temperature) after 400 ± 10 ℃, and 8～10min weldment is warming up to 605 ± 5 ℃, comes out of the stove.Welding rate＞98%.
Claims (2)
1, a kind of aluminium soldering tech is characterized by the aluminium soldering method of unprotect gas, promptly coats the flame welding agent in the aluminium welding position, weld tabs on the folder, in open hearth, be preheated to 400 ± 10 ℃ after, in 10min, be warming up to 605 ± 5 ℃ rapidly, finish soldering.
2, aluminium solder technology as claimed in claim 1, it is characterized by and use two sections stoves of open type, leading portion can make weldment be preheated to 400 ± 10 ℃, 800～900 ℃ of back segment furnace temperature, can make the weldment temperature rise to 605 ℃ ± ℃ in 10min, weldment transmits, temperature control is all automatic control; Be coated with that welding agent, folder weld tabs, anchor clamps are fastening, transmission, soldering be all streamline and work continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115205 CN1161263A (en) | 1996-04-02 | 1996-04-02 | Aluminium soldering tech. with no shielded gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115205 CN1161263A (en) | 1996-04-02 | 1996-04-02 | Aluminium soldering tech. with no shielded gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1161263A true CN1161263A (en) | 1997-10-08 |
Family
ID=5122490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96115205 Pending CN1161263A (en) | 1996-04-02 | 1996-04-02 | Aluminium soldering tech. with no shielded gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1161263A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103262C (en) * | 2000-06-03 | 2003-03-19 | 哈尔滨工业大学 | Method for low temperature welding aluminium based composite material without protection |
| CN100427257C (en) * | 2005-03-24 | 2008-10-22 | 深圳市金科特种材料股份有限公司 | Soft vacuum brazing process for aluminum alloy workpiece |
| CN101979204A (en) * | 2010-11-01 | 2011-02-23 | 哈尔滨工业大学 | Indirect-heating braze-welding method for packaging shell with thermal sensitive element |
| CN104148760B (en) * | 2014-08-13 | 2016-08-24 | 天津宏华焊研机器人科技有限公司 | A kind of method for welding of brass ware |
-
1996
- 1996-04-02 CN CN 96115205 patent/CN1161263A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103262C (en) * | 2000-06-03 | 2003-03-19 | 哈尔滨工业大学 | Method for low temperature welding aluminium based composite material without protection |
| CN100427257C (en) * | 2005-03-24 | 2008-10-22 | 深圳市金科特种材料股份有限公司 | Soft vacuum brazing process for aluminum alloy workpiece |
| CN101979204A (en) * | 2010-11-01 | 2011-02-23 | 哈尔滨工业大学 | Indirect-heating braze-welding method for packaging shell with thermal sensitive element |
| CN101979204B (en) * | 2010-11-01 | 2012-05-09 | 哈尔滨工业大学 | Indirect-heating braze-welding method for packaging shell with thermal sensitive element |
| CN104148760B (en) * | 2014-08-13 | 2016-08-24 | 天津宏华焊研机器人科技有限公司 | A kind of method for welding of brass ware |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |