CN1176162A - Gaseous brazing agent - Google Patents
Gaseous brazing agent Download PDFInfo
- Publication number
- CN1176162A CN1176162A CN 96116503 CN96116503A CN1176162A CN 1176162 A CN1176162 A CN 1176162A CN 96116503 CN96116503 CN 96116503 CN 96116503 A CN96116503 A CN 96116503A CN 1176162 A CN1176162 A CN 1176162A
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- CN
- China
- Prior art keywords
- boric acid
- gaseous
- methyl alcohol
- gas
- gas flux
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The gas flux for brazing consists of absolute ethyl alcohol or methyl alcohol 70-90%, boric acid 10-20% and potassium fluoroborate 0-18%. The advantages of the gas flux include adequate material, low cost and simple preparation, and using the gas flux can perform continuous brazing operation and result in stable flame temperature, unchanged flame brightness and color and less fatigue of operator's eyes.
Description
The present invention relates to be used for the gas flux of acetylene gas brazing.
The solder flux that is used for the acetylene gas brazing generally adopts solid flux, is Powdered, as copper gas welding flux 301.This solder flux has the defective of two aspects at least: first wire tip and weldment need constantly be stained with in welding process and be coated with solder powder, and welding process is discontinuously carries out, and has reduced operating efficiency, and this point is particularly evident when the welding round piece; It two is whenever to be stained with the temperature that solder flux all can reduce liquation, needs heat with flame, and in the process of heating, the brightness of flame and color are all wanted the generating period variation, cause welder's eye fatigue and damage.
For overcoming above-mentioned defective, the professional is seeking to replace solid flux with gasiform cubond.Be used as gas flux after the mixing material gasification that the somebody adopts boric acid formicester and methyl alcohol to form at present.Though this solder flux can overcome the defective of solid flux, but because the preparation of boric acid formicester is complicated, cost an arm and a leg, manufacturer is reluctant to produce in a large number, and is often out of stock on the market, and the source of goods can not guarantee, therefore is difficult to extensive use.
The objective of the invention is to be prepared into low-cost gaseous brazing agent easily, in order to substitute the solid copper solder flux with the raw material that is easier to obtain.
Technical scheme of the present invention is: a kind of gaseous brazing agent, to be formed by absolute ethyl alcohol or methyl alcohol, boric acid and potassium fluoborate, and the percentage by weight of each component is: absolute ethyl alcohol or methyl alcohol 70-90%, boric acid 10-20%, potassium fluoborate 0-10%.
Provide embodiments of the invention and accompanying drawing thereof below and be further described.
Fig. 1 is to use gas generator schematic diagram of the present invention.
Fig. 2 is the tables of data of sample mechanical performance.
By the component span that provides in the technique scheme, take out absolute ethyl alcohol or methyl alcohol, boric acid and potassium fluoborate respectively, total amount reaches 100%, makes boric acid and potassium fluoborate be dissolved in ethanol or methyl alcohol promptly prepares success through stirring.Last solution 1 is put into gas generator shown in Figure 1, seal cover 3 closes, introduce acetylene gas by the wireway 2 that is inserted in the solution 1, acetylene gas is insoluble to solution 1, with bubble form effusion solution 1, stir solution 1 simultaneously, make its volatilization gasification and formation gas shape, acetylene gas and cubond gas mix the back and 4 enter tip from the gas outlet above solution 1, carry out weld job after lighting.
Ethanol that the present invention is used or methyl alcohol, boric acid and potassium fluoborate are on the market common, and price is also lower.Its principle is characteristic and a volatility thereof of utilizing ethanol or methyl alcohol can dissolve boric acid and potassium fluoborate, evaporates into the gas shape and mix with acetylene gas under the stirring of acetylene gas, by the tip ejection, forms boric anhydride B in flame
2O
3Steam, boric anhydride B
2O
3Be acidic oxide, generate borate, float over weld pool surface, prevented the evaporation of zinc effectively, protected molten pool metal not continue oxidation simultaneously with the form of film with reactions such as the basic anhydride of molten bath and wire tip such as zinc oxide, cupric oxide, iron oxide.The shared ratio of component mesoboric acid is most important, and is few, and the amount of boric anhydride is just few, can not form effective diaphragm; Many, the excessive meeting of borate is stopped up tip, the median 15% of general desirable above-mentioned scope (percentage by weight, down together), and also the technological requirement of visual welding is selected in above-mentioned scope 10-20%.Potassium fluoborate in the component is fusing point and the molten surface tension force that is used to adjust the molten bath, and its shared ratio can be 0%, but should not surpass 10%, and excessive words may make the fusing point of liquation cross low and liquation flows, and can influence welding quality.Absolute ethyl alcohol in the component or methyl alcohol are the carriers as boric acid and potassium fluoborate, and the flash-point of methyl alcohol is very low, and certain danger is arranged, and for safety, except that very necessary, generally all should adopt ethanol.
The present invention compares with pulverous solid flux, has obvious advantage, from what tip sprayed is The acetylene gas that contains gaseous brazing agent, weld job can carry out continuously, the temperature stabilization of flame, thereby Intensity and the color of flame are constant, have improved welder's eye fatigue situation. The present invention and boric acid formicester and The gaseous brazing agent of methyl alcohol preparation is compared, and the advantage look is in raw materials used ample supply and prompt delivery, and is cheap, solder flux Preparation only need simple mix and blend. Consult tables of data shown in Figure 2, use gas copper of the present invention The test specimen that solder flux is welded into can be up to state standards tensile strength and the angle of bend of GB1530 regulation, in the test each Component adopts the median of span.
Claims (1)
- A kind of gaseous brazing agent is made up of absolute ethyl alcohol or methyl alcohol, boric acid and potassium fluoborate, and the percentage by weight of each component is: absolute ethyl alcohol or methyl alcohol 70-90%, boric acid 10-20%, potassium fluoborate 0-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96116503 CN1176162A (en) | 1996-09-11 | 1996-09-11 | Gaseous brazing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96116503 CN1176162A (en) | 1996-09-11 | 1996-09-11 | Gaseous brazing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1176162A true CN1176162A (en) | 1998-03-18 |
Family
ID=5123602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96116503 Pending CN1176162A (en) | 1996-09-11 | 1996-09-11 | Gaseous brazing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1176162A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972900A (en) * | 2010-10-26 | 2011-02-16 | 南阳防爆集团股份有限公司 | Soldering flux for copper brazing |
| CN103282548A (en) * | 2010-10-26 | 2013-09-04 | 新日铁住金株式会社 | Antioxidant and method for producing metal material |
| CN105171274A (en) * | 2015-09-15 | 2015-12-23 | 铜陵新鑫焊材有限公司 | Formula for brazing flux of copper welding rod |
| CN114682951A (en) * | 2020-12-30 | 2022-07-01 | 廊坊开发区环星焊接材料有限公司 | No-clean scaling powder for low-silver solder welding brass |
-
1996
- 1996-09-11 CN CN 96116503 patent/CN1176162A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972900A (en) * | 2010-10-26 | 2011-02-16 | 南阳防爆集团股份有限公司 | Soldering flux for copper brazing |
| CN103282548A (en) * | 2010-10-26 | 2013-09-04 | 新日铁住金株式会社 | Antioxidant and method for producing metal material |
| CN103282548B (en) * | 2010-10-26 | 2015-06-24 | 新日铁住金株式会社 | Antioxidant and method for producing metal material |
| CN105171274A (en) * | 2015-09-15 | 2015-12-23 | 铜陵新鑫焊材有限公司 | Formula for brazing flux of copper welding rod |
| CN114682951A (en) * | 2020-12-30 | 2022-07-01 | 廊坊开发区环星焊接材料有限公司 | No-clean scaling powder for low-silver solder welding brass |
| CN114682951B (en) * | 2020-12-30 | 2024-03-22 | 廊坊开发区环星焊接材料有限公司 | Cleaning-free soldering flux for soldering brass by low-silver solder |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |