CN103692112B - Be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux - Google Patents
Be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux Download PDFInfo
- Publication number
- CN103692112B CN103692112B CN201310660425.0A CN201310660425A CN103692112B CN 103692112 B CN103692112 B CN 103692112B CN 201310660425 A CN201310660425 A CN 201310660425A CN 103692112 B CN103692112 B CN 103692112B
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- Prior art keywords
- brazing
- copper
- applicable
- weight portions
- stainless steel
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3606—Borates or B-oxides
Abstract
The invention discloses one and be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux, the formula of its parts by weight is: boric acid: 40 ~ 42 weight portions; Potassium fluoride: 40 ~ 42 weight portions; Potassium fluoborate: 12 ~ 15 weight portions; Potassium chloride: 2 ~ 5 weight portions.It is low that this brazing flux has fusion temperature, and active strong, brazing quality is good, the advantage of brazing easy-clear.
Description
Technical field
The present invention relates to a kind of brazing flux, be specifically related to one and be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux, belong to material science.
Background technology
The flux used when brazing flux is soldering, its effect is the oxide removing solder and mother metal surface, and protects weldment and liquid solder in brazing process, avoid oxidation, improves the wetability of liquid solder butt-welding fitting.For most of method for welding, brazing flux is indispensable.
The brazing flux that current routine adopts easily lumps hardening, can cause very large waste.
Summary of the invention
The object of the present invention is to provide a kind of fusion temperature low, active strong prevented from caking is hardening, and brazing quality is good, the brazing flux of brazing easy-clear.
The present invention is achieved in that
One is applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux, and the formula of its parts by weight is:
Boric acid (H
3bO
3): 40 ~ 42 weight portions
Potassium fluoride (KF): 40 ~ 42 weight portions
Potassium fluoborate (KBF
4): 12 ~ 15 weight portions
Potassium chloride (KCl): 2 ~ 5 weight portions.
Further scheme is: be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux, the formula of its parts by weight is:
Boric acid (H
3bO
3): 42 weight portions
Potassium fluoride (KF): 42 weight portions
Potassium fluoborate (KBF4): 14 weight portions
Potassium chloride (KCl): 2 weight portions.
Be applicable to the preparation method of carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux described in present invention also offers, be: get pulverous four kinds of compositions, take in proportion, put into container;
In container, pour water into, mix well;
To container heating, remove moisture, boil 10 to 15min being no more than at the temperature of 200 DEG C, carbon steel to be applicable to, stainless steel, Copper and its alloy silver brazing brazing flux become white paste.
Further scheme is: described container is crucible.
Further scheme is: described water is distilled water.
Further scheme is: describedly boil 10 to 15min being no more than at the temperature of 200 DEG C, and temperature is not less than 100 DEG C.
Further scheme is: described four kinds of compositions are pure for analyzing.
The principle of this patent is: this brazing flux selects boric acid to be matrix, then adds potassium fluoride, potassium fluoborate, potassium chloride to obtain suitable active temperature and to strengthen deoxidation compound ability.
Boric acid H
3bO
3boric anhydride B is decomposed to form during heating
2o
3
2H
3BO
3→B
2O
3+3H
2O↑
The fusing point of boric anhydride is 580 DEG C, and it can form meltable borate with the oxide of iron, nickel and copper and float over brazed seam on the surface with the form of slag, can reach striping, can play mechanical protection effect again.
The function adding KF and KCl reduces the viscosity of brazing flux and improves the ability of deoxidation compound.
In order to reduce its fusion temperature further and improve its activity, add potassium fluoborate KBF
4, KBF
4fusing point is 540 DEG C, is decomposed into after fusing:
KBF
4→KF+BF
3
The BF separated out
3there is the ability of extremely strong deoxidation compound.
The present invention's advantage is compared with prior art: it is low that this brazing flux formula has fusion temperature, and brazing flux viscosity is good, and active strong, active temperature 550 DEG C to 850 DEG C, brazing quality is good, the advantage of brazing easy-clear.
Detailed description of the invention
Below by specific embodiment, the present invention is described further:
Embodiment one
One is applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux formula, and the formula of its parts by weight is:
Boric acid (H
3bO
3): 42 weight portions
Potassium fluoride (KF): 42 weight portions
Potassium fluoborate (KBF
4): 14 weight portions
Potassium chloride (KCl): 2 weight portions.
Embodiment two
One is applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux, and the formula of its parts by weight is:
Boric acid (H
3bO
3): 40 weight portions
Potassium fluoride (KF): 40 weight portions
Potassium fluoborate (KBF
4): 12 weight portions
Potassium chloride (KCl): 5 weight portions.
Embodiment three
One is applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux, and the formula of its parts by weight is:
Boric acid (H
3bO
3): 41 weight portions
Potassium fluoride (KF): 41 weight portions
Potassium fluoborate (KBF
4): 15 weight portions
Potassium chloride (KCl): 4 weight portions.
In above-described embodiment, be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux preparation method as follows:
Get and analyze pure, pulverous four kinds of compositions, take in proportion, put into crucible; In crucible, pour distilled water into, mix well; To crucible heating, remove moisture, boil 10 to 15min being not less than 100 DEG C, at the temperature that is no more than 200 DEG C, become white paste.
After utilizing the good brazing flux of the concrete formulated of above-described embodiment, carry out test process for Q235 carbon steel, 1Cr18Ni9Ti stainless steel and T1 red copper, spreading area measure, strength test, specific as follows:
According to the regulation of JB/T6045-1992 " hard solder brazing flux ", carry out soldering processes test to the silver brazing brazing flux of the present invention's allotment, result is as shown in table 1.
Table 1JB/T6045-1992 specifies technical requirement result of the test
According to GB11364-2008 " solder wetting test method ", various silver-colored brazing flux is coordinated BAg45CuZn silver solder, at 780 DEG C, carry out spreadability test respectively to Q235 carbon steel, 1Cr18Ni9Ti stainless steel and T1 red copper, and contrast silver-colored brazing flux QJ102 spreading area, result is as shown in table 2.
Table 2 spreadability test result
Claims (6)
1. be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux, it is characterized in that: described in be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux the formula of parts by weight be:
Boric acid: 40 ~ 42 weight portions
Potassium fluoride: 40 ~ 42 weight portions
Potassium fluoborate: 12 ~ 15 weight portions
Potassium chloride: 2 ~ 5 weight portions.
2. be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux according to claim 1, it is characterized in that: described in be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux the formula of parts by weight be:
Boric acid: 42 weight portions
Potassium fluoride: 42 weight portions
Potassium fluoborate: 14 weight portions
Potassium chloride: 2 weight portions.
3. be applicable to the preparation method of carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux described in claim 1 or 2, it is characterized in that:
Get pulverous four kinds of compositions, take in proportion, put into container;
In container, pour water into, mix well;
To container heating, remove moisture, be not less than 100 DEG C and boiling 10 to 15min under being no more than the temperature of 200 DEG C, carbon steel to be applicable to, stainless steel, Copper and its alloy silver brazing brazing flux become white paste.
4. be applicable to the preparation method of carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux according to claim 3, it is characterized in that: described container is crucible.
5. be applicable to the preparation method of carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux according to claim 3, it is characterized in that: described water is distilled water.
6. be applicable to the preparation method of carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux according to claim 3, it is characterized in that: described four kinds of compositions are pure for analyzing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660425.0A CN103692112B (en) | 2013-12-05 | 2013-12-05 | Be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660425.0A CN103692112B (en) | 2013-12-05 | 2013-12-05 | Be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103692112A CN103692112A (en) | 2014-04-02 |
| CN103692112B true CN103692112B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310660425.0A Active CN103692112B (en) | 2013-12-05 | 2013-12-05 | Be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux |
Country Status (1)
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| CN104690448B (en) * | 2015-02-25 | 2017-06-09 | 哈尔滨工业大学 | A kind of belt carcass copperwelding rod for being suitable for fine region soldering |
| CN104907722A (en) * | 2015-05-25 | 2015-09-16 | 郑州机械研究所 | Brass flux-cored brazing filler metal with reducing agents and flow aids and preparation method thereof |
| 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 |
| CN105252171B (en) * | 2015-11-13 | 2017-10-31 | 浙江新锐焊接科技股份有限公司 | A kind of scaling powder |
| CN106270868A (en) * | 2016-08-30 | 2017-01-04 | 郑州机械研究所 | A kind of pure boron activated diffusion soldering connects the method for copper and steel |
| CN112658428A (en) * | 2020-12-15 | 2021-04-16 | 西安飞机工业（集团）有限责任公司 | Copper conduit flame brazing protective coating and protection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB454070A (en) * | 1935-02-07 | 1936-09-23 | British Thomson Houston Co Ltd | Improvements in and relating to fluxes for brazing |
| CN1105616A (en) * | 1994-01-17 | 1995-07-26 | 江立新 | Sliver soldering paste |
| CN1586795A (en) * | 2004-08-31 | 2005-03-02 | 广州有色金属研究院 | Copper welding paste for automatic brazing and its preparing method |
| CN101190483A (en) * | 2006-11-22 | 2008-06-04 | 上海斯米克焊材有限公司 | Cream-like silver brazing fluxes |
| CN101837526A (en) * | 2010-05-26 | 2010-09-22 | 惠州市五福工业技术有限公司 | Preparation method of silver solder paste and silver solder paste product |
| 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 |
-
2013
- 2013-12-05 CN CN201310660425.0A patent/CN103692112B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB454070A (en) * | 1935-02-07 | 1936-09-23 | British Thomson Houston Co Ltd | Improvements in and relating to fluxes for brazing |
| CN1105616A (en) * | 1994-01-17 | 1995-07-26 | 江立新 | Sliver soldering paste |
| CN1586795A (en) * | 2004-08-31 | 2005-03-02 | 广州有色金属研究院 | Copper welding paste for automatic brazing and its preparing method |
| CN101190483A (en) * | 2006-11-22 | 2008-06-04 | 上海斯米克焊材有限公司 | Cream-like silver brazing fluxes |
| CN101837526A (en) * | 2010-05-26 | 2010-09-22 | 惠州市五福工业技术有限公司 | Preparation method of silver solder paste and silver solder paste product |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103692112A (en) | 2014-04-02 |
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Address after: 610000 Sichuan Chengdu Economic and Technological Development Zone (Longquanyi District) 118 Aerospace North Road Patentee after: Sichuan Aerospace Zhongtian Power Equipment Co., Ltd. Address before: 610000 No. 118 Aerospace North Road, Longquanyi Town, Chengdu City, Sichuan Province Patentee before: Sichuan Dayu Special Vehicle Factory |