CN100519051C - Hot melt welding agent - Google Patents
Hot melt welding agent Download PDFInfo
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- CN100519051C CN100519051C CNB2007100708246A CN200710070824A CN100519051C CN 100519051 C CN100519051 C CN 100519051C CN B2007100708246 A CNB2007100708246 A CN B2007100708246A CN 200710070824 A CN200710070824 A CN 200710070824A CN 100519051 C CN100519051 C CN 100519051C
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Abstract
A hot melt welding fluid belongs to a combination. Prior art is not able to realize the full thermo-welding of metal and make the molecule of the metal combined. Moreover, the mechanical strength and the conductivity of the prior art are not good enough. The invention is made of powdery composition and corresponding weight percentage as following: 58 to 62 per cent of copper oxide, 4 to 6 per cent of ferric oxide, 4 to 6 per cent of aluminum, 14 to 16 percent of magnesium, 6 to 8 per cent of copper, 1 to 3 per cent of iron and 4 to 6 per cent of phosphorus. The invention is able to make use of welding the elements of same materials and different materials such as pure copper, brass, bronze, red copper, copper covered steel, pure iron, stainless steel, cast iron, galvanized steel and cast iron and so on. The joint of the invention has good load capacity. In addition, the invention has good mechanical property, stable percussion, strong resistance to corrosion and easy and safe connection. The invention also can be provided with different reaction temperature according to the metallic character of a conductor that needs to be welded, which makes the welded joint more firm and perfect.
Description
Technical field
The invention belongs to composition, a speciogenesis thermit reaction utilizes chemical heat release to produce high temperature specifically, and passes through fusible pattern and realize Thermofusion welding agent to member welding.
Background technology
Present exothermic welding flux is to mix with common chemical material, the proportioning of stock yard is science not, the heat that produces does not reach the standard of thorough deposite metal, make intermetallic welding not reach specification requirement (GB/T 3323-2005 metal molten weldering welding point radiography, the Non-Destructive Testing of GB/T14693-1993 weld seam, welded stock size tolerance of GB/T 19804-2005 and form and position tolerance, QJ3116-1999 metal melting welding internal flaw X-ray radiography, the quality control of HB5363-1995 welding procedure, national standards such as JB/T7716-1995 welding point four-point bending fatigue test have been done concrete regulation to specification requirement), not only in welding point, be easy to generate the gap, and mechanical strength and conductance are all not ideal enough, can't reach intermolecular combination.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition be overcome that prior art exists can not make the abundant welding of metal, do not reach the intermetallic molecule in conjunction with and mechanical strength and all dissatisfactory defective of conductance, a kind of new Thermofusion welding agent is provided, to utilize the chemical reaction generation high temperature between the metallic compound to make metal melting, so that impel the welding position to form the permanent splice of given shape by mould, guarantee the size conforms technological requirement, make intermetallic fusion reach the molecule combination.For this reason, the present invention is by the following technical solutions:
Thermofusion welding agent is characterized in that being made up of following pulverous component and corresponding mass percentage content: cupric oxide 58%～62%, iron oxide 4%～6%, aluminium 4%～6%, magnesium 14%～16%, copper 6%～8%, iron 1%～3%, phosphorus 4%～6%.
As the further of technique scheme improved and replenish, the present invention also comprises following additional technical feature:
Described component and corresponding mass percentage content are: cupric oxide 60%, iron oxide 5%, aluminium 5%, magnesium 15%, copper 7.5%, iron 2.5%, phosphorus 5%.
Described each component, wherein the granularity of cupric oxide is 40～100 orders.
The present invention utilizes the molten metal temperature that is reduced into after the granularity of controlling cupric oxide and the exothermic reaction that oxygenation efficiency is adjusted solder flux and the reaction, and (granularity that increases cupric oxide can make reaction temperature raise, the granularity that reduces cupric oxide can make reaction temperature reduce, the oxygenation efficiency that improves cupric oxide can make reaction temperature raise, the granularity that reduces cupric oxide can make reaction temperature reduce), give full play to exothermic reaction, 2500～3400 ℃ the high temperature that utilizes the present invention to reach makes the thawing of weldment termination and finishes welding, make the weldment joint form molecular structure, reach intermolecular combination, guarantee welding quality, specifically can reach following beneficial effect:
1. current load ability is big.The current capacity of welding point is identical with conductor, has excellent conducting performance, and after testing, the D.C. resistance rate of change rate before and after the welding approaches zero.
2. satisfactory mechanical property.Because be the fusion joint,, be a kind of nonvolatil joint so its joint is that molecule combines with conductor part.Tensile strength is carried out 180 ° of flexibility with weld and the crack can not taken place and peel off up to 600 newton/square millimeter.
3. impulse resistance is stable.Test shows that under the impact of big electric current of short time, conductor melts prior to joint made by flame welding, thereby can not be subjected to the damage of surge current.
4. resistance to corrosion is strong.Because joint is by fusion weld, there is not contact surface, do not have residual stress, and joint covered by the copper that flux reaction produces, thereby strengthened the corrosion resistance of conductor greatly.Put into 10% salpeter solution and soaked 90 hours, do not have corrosion substantially, be applicable to the environment (life-span is more than 50 years) of different humidity, temperature, pH value.
5. connect simple and safe.Need not outside resources, need not Special Equipment, need not professional operating personnel, only need the common instrument that ignites (such as spray gun) that it is ignited, indoor, outdoor can the operation finished the connect hours weak point.
6. can dispose different reaction temperatures according to by the metallic character of weldering conductor, make welding point more firm, perfect.
This Thermofusion welding agent can be used for fine copper, brass, bronze, red copper, copper covered steel, pure iron, stainless steel, wrought iron, zinc-plated iron-steel, the welding between material of the same race such as cast iron and the foreign material member.
The specific embodiment
Below by several embodiment the present invention is described in detail.
Embodiment one
With 60～80 purpose cupric oxide powder 6kg and the Powdered iron oxide 0.5kg of 50～65 purposes, aluminium 0.5kg, magnesium 1.5kg, copper 0.75kg, iron 0.25kg, phosphorus 0.5kg mixes, take a morsel and be used for soldering copper Baogang member (member that the copper layer is promptly arranged in the surface coverage of steel): two copper covered steel members are opposite to fusible pattern mutually, and (fusible pattern is a kind of mould, be used to retrain geometric specifications and the surface quality that forms joint, reaction to solder flux does not exert an influence) in, between two joints, fill out and state solder flux, light solder flux with spray gun, thermit reaction promptly takes place, release heat produces 2200～3000 ℃ high temperature, make the member metal molten, in fusible pattern, realize the welding of two members.Weld the solid that the joint that finishes becomes rule, after testing:
Because be subjected to the constraint of fusible pattern, appearance free from flaw, the dimensional tolerance of joint and form and position tolerance all meet the regulation of national standard less than 2mm;
The no bubble crack of taking pictures through X ray inside, contact tensile strength reaches 600 newton/square millimeters, and crooked 180 ° of surfaces do not come off, and non-cracking and slit produce;
Put into 10% nitric acid liquid and do not have corrosion phenomenon in 90 hours substantially;
D.C. resistance rate of change rate before and after the welding approaches zero;
Under the impact of big electric current of short time, conductor melts prior to joint made by flame welding, thereby can not be subjected to the damage of surge current;
Above testing result, the examination requirements that is up to state standards fully.
Embodiment two
Mix with 40～60 order cupric oxide powder 5.8kg and the pulverous iron oxide 0.5kg of 30～75 orders, aluminium 0.5kg, magnesium 1.8kg, copper 0.75kg, iron 0.25kg, phosphorus 0.5kg, take a morsel and be used for welding of aluminum and copper: be opposite to two members in the fusible pattern mutually, between two joints, fill out and state solder flux, light solder flux with spray gun, thermit reaction promptly takes place, release heat produces 2000 ℃ high temperature, makes the member metal molten, realizes the welding of two members in fusible pattern.Weld the solid that the joint that finishes becomes rule, after testing:
Because be subjected to the constraint of fusible pattern, appearance free from flaw, the dimensional tolerance of joint and form and position tolerance all meet the regulation of national standard less than 2mm;
The no bubble crack of taking pictures through X ray inside, contact tensile strength reaches 500 newton/square millimeters, and crooked 180 ° of surfaces do not come off, and non-cracking and slit produce;
Put into 10% nitric acid liquid and do not have corrosion phenomenon in 90 hours substantially;
D.C. resistance rate of change rate before and after the welding approaches zero;
Under the impact of big electric current of short time, conductor melts prior to joint made by flame welding, thereby can not be subjected to the damage of surge current;
Above testing result, the examination requirements that is up to state standards fully.
Embodiment three
Mix with 80～100 purpose cupric oxide powder 6.2kg and pulverous iron oxide 0.5kg, aluminium 0.5kg, magnesium 1.4kg, copper 0.75kg, iron 0.25kg, phosphorus 0.5kg below 40 orders, take a morsel and be used for weldable steel: be opposite to two copper members in the fusible pattern mutually, between two joints, fill out and state solder flux, light solder flux with spray gun, thermit reaction promptly takes place, release heat produces 2500～3400 ℃ high temperature, makes the member metal molten, realizes the welding of two members in fusible pattern.Weld the solid that the joint that finishes becomes rule, after testing:
Because be subjected to the constraint of fusible pattern, appearance free from flaw, the dimensional tolerance of joint and form and position tolerance all meet the regulation of national standard less than 2mm;
The no bubble crack of taking pictures through X ray inside, contact tensile strength reaches 600 newton/square millimeters, and crooked 180 ° of surfaces do not come off, and non-cracking and slit produce;
Put into 10% nitric acid liquid and do not have corrosion phenomenon in 90 hours substantially;
D.C. resistance rate of change rate before and after the welding approaches zero;
Under the impact of big electric current of short time, conductor melts prior to joint made by flame welding, thereby can not be subjected to the damage of surge current;
Above testing result, the examination requirements that is up to state standards fully.
Need to prove, except above-mentioned three embodiment, the solder flux that in the scope of component of the present invention and its content, is made into, be used to weld fine copper, brass, bronze, red copper, pure iron, stainless steel, wrought iron, zinc-plated iron-steel, the member of material of the same race such as cast iron and foreign material, after testing, its technique effect is not inferior to the foregoing description, will not give unnecessary details one by one at this.
Claims (2)
1, Thermofusion welding agent is characterized in that being made up of following pulverous component and corresponding mass percentage content: cupric oxide 58%～62%, iron oxide 4%～6%, aluminium 4%～6%, magnesium 14%～16%, copper 6%～8%, iron 1%～3%, phosphorus 4%～6%.
2, Thermofusion welding agent according to claim 1 is characterized in that described component and corresponding mass percentage content are: cupric oxide 60%, iron oxide 5%, aluminium 5%, magnesium 15%, copper 7.5%, iron 2.5%, phosphorus 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100708246A CN100519051C (en) | 2007-08-16 | 2007-08-16 | Hot melt welding agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100708246A CN100519051C (en) | 2007-08-16 | 2007-08-16 | Hot melt welding agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101143412A CN101143412A (en) | 2008-03-19 |
| CN100519051C true CN100519051C (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100708246A Expired - Fee Related CN100519051C (en) | 2007-08-16 | 2007-08-16 | Hot melt welding agent |
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| Country | Link |
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| CN (1) | CN100519051C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412167B (en) * | 2008-11-28 | 2011-01-26 | 中国电力科学研究院 | Thermofusion welding agent for welding copper covered steel grounded screen |
| CN101972905B (en) * | 2010-10-27 | 2012-06-27 | 天津大学 | Self-propagating brazing heat source medicinal powder, self-propagating brazing device and preparation method thereof |
| CN102198570B (en) * | 2011-05-06 | 2014-12-31 | 中国电力科学研究院 | Heating welding flux of copper-coated steel/steel grounding network |
| CN103938548A (en) * | 2014-04-23 | 2014-07-23 | 宁波邦和新材料有限公司 | Welding ball for suspension bridge main cable wrapping wires |
| CN104551445B (en) * | 2014-11-18 | 2016-06-01 | 昆山斯格威电子科技有限公司 | The block exothermic welding flux that a kind of high safety is easily ignited and briquetting technique thereof |
| CN109332941B (en) * | 2018-10-01 | 2024-01-19 | 郴州湘利电子有限公司 | Corrosion-resistant high-conductivity exothermic welding flux |
| CN113996968B (en) * | 2021-11-08 | 2023-04-28 | 绍兴十目科技有限公司 | Exothermic welding flux based on copper-iron alloy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902891A (en) * | 1973-06-29 | 1975-09-02 | Goldschmidt Ag Th | Aluminothermic reaction mixture based on copper oxide and iron oxide |
| CN1037855A (en) * | 1988-05-26 | 1989-12-13 | 昆明冶金机械厂 | Aluminithermic weld of cables |
| US5944914A (en) * | 1996-12-04 | 1999-08-31 | Elektro-Thermit Gmbh | Aluminothermic mixture with ferrochromium alloy |
| RU2151037C1 (en) * | 1998-01-16 | 2000-06-20 | Иоффе Борис Владимирович | Thermit welding composition |
| CN1371781A (en) * | 2001-02-28 | 2002-10-02 | 石含华 | Heat releasing welding flux |
-
2007
- 2007-08-16 CN CNB2007100708246A patent/CN100519051C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902891A (en) * | 1973-06-29 | 1975-09-02 | Goldschmidt Ag Th | Aluminothermic reaction mixture based on copper oxide and iron oxide |
| CN1037855A (en) * | 1988-05-26 | 1989-12-13 | 昆明冶金机械厂 | Aluminithermic weld of cables |
| US5944914A (en) * | 1996-12-04 | 1999-08-31 | Elektro-Thermit Gmbh | Aluminothermic mixture with ferrochromium alloy |
| RU2151037C1 (en) * | 1998-01-16 | 2000-06-20 | Иоффе Борис Владимирович | Thermit welding composition |
| CN1371781A (en) * | 2001-02-28 | 2002-10-02 | 石含华 | Heat releasing welding flux |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101143412A (en) | 2008-03-19 |
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Owner name: XINCHANG COUNTY HUATIAN LIGHTNING PROTECTION EQUIP Free format text: FORMER OWNER: HUANG LILI Effective date: 20091113 |
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Effective date of registration: 20091113 Address after: No. 30 Jiangnan Road, Nanming street, Xinchang County, Zhejiang Province, China: 312500 Patentee after: Xinchang Huatian Lightening Protection Equipment Co., Ltd. Address before: Room 6, Lane 252, Shengli Road, Xinchang County, Zhejiang Province: 312500 Co-patentee before: Huang Bizhen Patentee before: Huang Li Li |
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Granted publication date: 20090729 Termination date: 20110816 |