CN102658438A - Welding ring special for aluminum and copper composite pipe and preparation method thereof - Google Patents
Welding ring special for aluminum and copper composite pipe and preparation method thereof Download PDFInfo
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- CN102658438A CN102658438A CN2012101429123A CN201210142912A CN102658438A CN 102658438 A CN102658438 A CN 102658438A CN 2012101429123 A CN2012101429123 A CN 2012101429123A CN 201210142912 A CN201210142912 A CN 201210142912A CN 102658438 A CN102658438 A CN 102658438A
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Abstract
The invention discloses a welding ring special for an aluminum and copper composite pipe. The welding ring comprises the following components in percentage by weight: 1 to 20 percent of Sb, 0 to 5 percent of Cu, 0 to 6 percent of Ni, 0 to 5 percent of Ag, 0 to 2 percent of Ce and the balance of Sn and inevitable impurities. The welding ring special for the aluminum and copper composite pipe has excellent tensile strength and ageing resistance after being welded and smooth welding surface, can avoid electrochemical corrosion, is stable in product quality, high in yield, low in cost and convenient to use and is mainly used for air-conditioning and refrigerating industries, and the welding requirements of the conventional copper and aluminum composite pipes are met.
Description
Technical field
The present invention relates to a kind of weld-ring, relate in particular to environmental protection weld-ring that is used for the soldering copper aluminium composite pipe and preparation method thereof, be mainly used in air-conditioning and the refrigeration industry.
Background technology
Past refrigeration industry and air conditioner industry welding copper pipe generally adopt the welding of copper-phosphorus alloy weld-ring, and this weld-ring is complex process when welding, and copper phosphorus weld-ring fusing point is higher, also need during welding to apply special-purpose scaling powder in addition, have increased processing step greatly.Now; A kind of material copper aluminum composite pipes of novel energy-conserving comes out; Its heat exchange efficiency is because copper pipe; No matter be that indexs such as tensile strength, burst pressure, percentage elongation, enlarging rate, interior table cleannes, flattening, bending, anti-leakage performance satisfy industry standard fully, its price is also cheap than copper pipe, has been subjected to the favor in many market.Copper aluminum composite pipes is compared with copper pipe and had following advantage: the body outside is 3003 rust-preventing aluminum alloys, and the inboard is a T2 oxygen-free copper, is metallurgical alloy layer between molecular atoms between two-layer; Copper aluminum composite pipes is with copper moment heat absorption of high thermal conductivity coefficient, comprehensively dispels the heat with the aluminium of high specific heat coefficient, is suitable for all kinds of radiators most; Average every air-conditioning reduces by 150 yuan of tubing purchase costs; Stopped the electrochemical corrosion between copper pipe and aluminium fin in traditional air-conditioning, the Energy Efficiency Ratio decay is a critical material of making long-acting air-conditioning slowly in the air-conditioning cycle; In the process, bend pipe, the pipe that rises, enlarging and suitable together; The tensile strength of pipe is 130MPa, and all more than 15MPa, the enlarging rate is big more than 40% for burst pressure.
The appearance of copper aluminum composite pipes, great variety has also taken place in its welding procedure, and what change maximum has just replaced the higher copper phosphorus weld-ring of fusing point with the soldering ring, and the soldering ring carries scaling powder, and welding procedure is simple.Simple weld-ring can not satisfy the welding requirements of copper aluminum composite pipes, because the surface of copper can be oxidized gradually during with the air Long contact time, therefore, only is weld-ring and copper aluminum composite pipes and parts thereof to be heated and are difficult to weld.
Summary of the invention
The technical problem that the present invention mainly solves provides the special-purpose weld-ring of a kind of albronze multiple tube, can the welding performance excellence.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: provide a kind of copper aluminum composite pipes special-purpose weld-ring; Each composition and percentage by weight are in the described weld-ring: Sb 1%-20%, Cu 0%-5%, Ni 0%-6%, Ag 0%-5%, Ce 0%-2%, surplus is Sn and inevitable impurity.
Another object of the present invention provides the preparation method of the special-purpose weld-ring of a kind of copper aluminum composite pipes, and concrete steps comprise:
(100), the intermediate alloy melting: drop into purity in the crucible and be 99.99% tin slab, respectively with copper, antimony, silver, nickel, that cerium is smelted into intermediate alloy is subsequent use;
(200) casting: choose purity on request and be 99.99% tin slab and corresponding intermediate alloy melting; And be cast into the tin post; Said each component of tin post and percentage by weight are: Sb 1%-20%, Cu 0%-5%, Ni 0%-6%, Ag 0%-5%, Ce 0%-2%, and surplus is Sn and inevitable impurity;
(300), extruding: the preheating hydraulic press, set that horizontal bridge of the nose temperature is 70-80 ℃ before the hydraulic press, die head temperature is 113-123 ℃; The rosin bucket temperature is 130-150 ℃, treat that the machine preheating is good after, the tin post is spread on the material loading seat that suitable lubricating oil is put in 450T solder stick hydraulic press; Scaling powder is poured in the hydraulic press rosin bucket; And be incubated in 130-150 ℃, covering the rosin bung, feeding pressure is 2-3kg/cm
2Nitrogen; Primer fluid press, extrusion speed are 4-5min/ tin post, and squeeze pressure is 140-190MPa, and the control scaling powder is produced the scolding tin line of Φ 14 band scaling powder cores between 1.5%-3.0%.
(400), rolling: roller mill transfers to manual mode earlier, the scolding tin line of Φ 14 band scaling powder cores is passed successively roll wheel, errorless after, with the spray mode dissolubility cooling-lubricant of fetching boiling water, go out linear velocity and transfer to 40m/min, the outlet line directly is 5.0mm;
(500), wire drawing: first preheating wire drawing machine cools off cutting fluid, and fluid temperature is controlled at 60 ℃-70 ℃, starts the machine, and line directly for the solder of 5mm passes the wire drawing machine grinding tool successively, is gone out linear diameter and is controlled between the 1.0mm-3.0mm, is convenient to follow-up system ring;
(600), Cheng Huan: solder successively through three fabric wheels of ring forming machine, is sent into solder the line sending mouth of ring forming machine at last, start ring forming machine, frequency conversion speed is 80-120 time/min, can make the environmental protection weld-ring that different size is used for copper aluminum composite pipes.
In preferred embodiment of the present invention, the detailed process of said step (100) is: according to mass fraction add 80% purity be 99.99% pure tin in crucible, heat temperature raising to 250 ℃-280 ℃; The waterglass that in crucible, adds 2cm again adds than copper, antimony, silver, nickel, the cerium of getting 20% respectively according to mass fraction, in 1200 ℃ of-1400 ℃ of smeltings; Keep this temperature 0.5-1h, prepare mass fraction respectively than being tin 80 bronze medals 20, tin 80 antimony 20; Tin 80 silver medals 20, tin 80 nickel 20, the intermediate alloy of tin 80 ceriums 20; Through cooling, between 350 ℃ of-400 ℃ of temperature, be cast into alloy bar or piece to intermediate alloy with subsequent use then.
In preferred embodiment of the present invention, the detailed process of said step (200) is: the tin of predetermined number is put into the horizontal caster smelting furnace, be warming up to 350 ℃; According to formula rate, add above-mentioned intermediate alloy, warming while stirring is stirred and to be not less than 20min, is warming up between 420 ℃-450 ℃ of the cast temperatures and keeps this temperature range; Add solder dross reducing agent, the scruff that is stirred to liquid level becomes ash dress back fully to be got with strainer, continues to add antioxidant and stir 5min; Alloy liquid prepares the back and starts the tin liquor pump; In the incubator with alloy liquid suction horizontal caster, temperature is controlled at 420 ℃-450 ℃, opens cooling circulating water; Start horizontal caster, be cast into the tin post to alloy liquid.
In preferred embodiment of the present invention; The scaling powder preparation method is in the said step (300): accurately weighing water-white Foral is in electric furnace; Constant temperature melts between 130 ℃-150 ℃; Treat that rosin fusing back adds the weld-ring special active agent that meets the rosin ratio that takes by weighing, and stir 20min-30min.
The invention has the beneficial effects as follows: the special-purpose weld-ring of albronze multiple tube of the present invention has welding after-drawing intensity and ageing resistance excellence, weld smooth surface, can avoid electrochemical corrosion; Reach the welding requirements of copper aluminum composite pipes now; Constant product quality, yield rate is high, and cost is lower; Easy to use, be mainly used in air-conditioning and the refrigeration industry.
The specific embodiment
Set forth in detail in the face of preferred embodiment of the present invention down, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
Embodiment one:
Each composition and percentage by weight are in the weld-ring: Sb 5%, and Cu 0.1%, and Ce 0.002%, and surplus is Sn and inevitable impurity; It is following that the tin ring prepares process:
(100), the intermediate alloy melting: according to mass fraction add 80% purity be 99.99% pure tin in crucible, heat temperature raising to 250 ℃-280 ℃ adds the waterglass of 2cm again in crucible; Add than copper, antimony, silver, nickel, the cerium of getting 20% respectively according to mass fraction,, keep this temperature 0.5-1h in 1200 ℃ of-1400 ℃ of smeltings; Prepare mass fraction respectively than being tin 80 bronze medals 20, tin 80 antimony 20, tin 80 silver medals 20; Tin 80 nickel 20; The intermediate alloy of tin 80 ceriums 20 then through cooling, is cast into alloy bar or piece to intermediate alloy with subsequent use between 350 ℃ of-400 ℃ of temperature;
(200) casting: the tin of predetermined number is put into the horizontal caster smelting furnace, be warming up to 350 ℃; According to formula rate; Calculate respectively with the tin of predetermined number and will add tin 80 bronze medals 20, tin 80 antimony 20, the amount of tin 80 ceriums 20 intermediate alloys also adds in the smelting furnace; Warming while stirring is stirred and to be not less than 20min, is warming up between 420 ℃-450 ℃ of the cast temperatures and keeps this temperature range; Add solder dross reducing agent, the scruff that is stirred to liquid level becomes ash dress back fully to be got with strainer, and the existence that is intended to prevent scruff exerts an influence to the wetability of the good scolder of subsequent preparation; Continue to add antioxidant and also stir 5min, the adding of this additive be intended to washing lotion in hot environment not by the dioxygen oxidation in the environment, improve the flowability of scolder; Alloy liquid prepares the back and starts the tin liquor pump, and in the incubator with alloy liquid suction horizontal caster, temperature is controlled at 420 ℃-450 ℃, opens cooling circulating water, starts horizontal caster, is cast into the tin post to alloy liquid.Using intermediate alloy to add metallic element compares with direct adding metallic element; Intermediate alloy add metallic element can make metallic element uniformly and tin form corresponding alloy; Metal distributes even more in alloy, and alloy grain is got over refinement, and the intensity of alloy is high more; Plasticity and toughness are good more, have improved the physical synthesis performance of weld after the scolder welding.Said each component of tin post and percentage by weight are: Sb 5%, and Cu 0.1%, and Ce 0.002%, and surplus is Sn and inevitable impurity;
(300), extruding: the preheating hydraulic press, set that horizontal bridge of the nose temperature is 70-80 ℃ before the hydraulic press, die head temperature is 113-123 ℃; The rosin bucket temperature is 130-150 ℃, treat that the machine preheating is good after, the tin post is spread on the material loading seat that suitable lubricating oil is put in 450T solder stick hydraulic press; Large-tonnage hydraulic press extruded alloy post can improve the metal deformation ability, improves the tissue of metal material, makes metal fine and close more; Improve the mechanical property of alloy material, improved the combination property of weld-ring.The scaling powder preparation: accurately weighing water-white Foral is in electric furnace; Constant temperature melts between 130 ℃-150 ℃, treats that rosin fusing back adds the weld-ring special active agent that meets the rosin ratio that takes by weighing, and stirs 20min-30min; After preparing, pours into scaling powder in the hydraulic press rosin bucket; And be incubated in 130-150 ℃, covering the rosin bung, feeding pressure is 2-3kg/cm
2Nitrogen; The primer fluid press; Extrusion speed is a 4-5min/ tin post; Squeeze pressure is 140-190MPa, and the control scaling powder is produced the scolding tin line of Φ 14 band scaling powder cores between 1.5%-3.0%; Hydraulic press at first goes out continuity and the uniformity that Φ 14 lines solder directly helps rosin scaling powder in the scolder, the quality when having guaranteed the scolder welding.
(400), rolling: roller mill transfers to manual mode earlier; Be with the scolding tin line of scaling powder cores to pass successively Φ 14 and roll wheel; After errorless, with the spray mode dissolubility cooling-lubricant of fetching boiling water, the heat that produces when being convenient to lubricated between roll and the solder and taking away rolling; Go out linear velocity and transfer to 40m/min, the outlet line directly is 5.0mm; Roller mill has further improved alloy property, has improved the physical property of bonding wire, is convenient to follow-up wire drawing and system ring technology.
(500), wire drawing: first preheating wire drawing machine cools off cutting fluid, and fluid temperature is controlled at 60 ℃-70 ℃, and this temperature can keep best lubricated and cutting effect, can make bonding wire that certain toughness is arranged, and is convenient to enhance productivity and the bonding wire quality.Start the machine, line directly for the solder of 5mm passes the wire drawing machine grinding tool successively, is gone out linear diameter and is controlled between the 1.0mm-3.0mm, be convenient to follow-up system ring;
(600), Cheng Huan: solder successively through three fabric wheels of ring forming machine, is sent into solder the line sending mouth of ring forming machine at last, start ring forming machine, frequency conversion speed is 80-120 time/min, can make the environmental protection weld-ring that different size is used for copper aluminum composite pipes.
Embodiment two
Each composition and percentage by weight are in the weld-ring: Sb 5%, Cu 0.2%, Ni 0.05%, Ce 0.001%, and surplus is Sn and inevitable impurity; The preparation process of weld-ring is identical with embodiment one.
Embodiment three
Each composition and percentage by weight are in the weld-ring: Sb 7%, Cu 0.45%, Ni 0.05%, Ce 0.001%, and surplus is Sn and inevitable impurity; The preparation process of weld-ring is identical with embodiment one.
Embodiment four
Each composition and percentage by weight are in the weld-ring: Sb 5%, Ag 0.2%, and surplus is Sn and inevitable impurity; The preparation process of weld-ring is identical with embodiment one.
Embodiment five
Each composition and percentage by weight are in the weld-ring: Sb 6%, Ni 0.06%, Ag 0.3%, Ce 0.001%, and surplus is Sn and inevitable impurity; The preparation process of weld-ring is identical with embodiment one.
The composition of the special-purpose weld-ring of aluminum bronze multiple tube of the present invention is main with tinbase, has added alloying elements such as Sb, Ni, Ag, Ce, makes flowability, mechanical strength, ageing resistance and the tensile property of the special-purpose weld-ring of albronze multiple tube obtain comprehensive lifting.What each alloying element that wherein, is added played specifically act as:
1, Cu: improve its mechanical strength and percentage elongation, can suppress infiltration in a large number in the albronze multiple tube copper course fusion weld tin liquor simultaneously, improve its heat conductivility.
2, Sb: increase the affinity of scolder and mother metal, have excellent mechanical intensity after making welding, also increased the hardness of scolder simultaneously, the system of being convenient to is encircled operation.
2, Ni: can make the grain refinement of alloy, tension intensity is just big more.Thinner crystal grain has also increased the mobile performance of tin soldering liquid, the postwelding smooth surface; Suppress etch and the interface alloy-layer Cu of tin to albronze multiple tube copper layer
6Sn
5Increase.So just guaranteed that weld has enough tension intensitys; Reduced the attenuation of copper layer even, good air-tightness and resistance to pressure have been arranged thereby weld the back product fully by the possibility of etch; Also can suppress to weld the crystallization again of back crystal, improve the mechanical performance of the copper aluminum composite pipes after welding greatly, improve reliability of products.
3, Ag: can increase flowing and wetability of tin soldering liquid; Improve the weld strength of welding and the percentage elongation of weld-ring; Improve the hot tired ability and the ageing resistance of weld, also help to stop the etch of tin, have well heat-resisting tired ability copper aluminum composite pipes copper layer.
4, Ce: can increase the antioxygenic property of scolder, make scolder the time be difficult for oxidation and improve the mobile performance of scolder in welding.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. the special-purpose weld-ring of a copper aluminum composite pipes, it is characterized in that each composition and percentage by weight are in the described weld-ring: Sb 1%-20%, Cu 0%-5%, Ni 0%-6%, Ag 0%-5%, Ce 0%-2%, surplus is Sn and inevitable impurity.
2. the preparation method of the special-purpose weld-ring of a copper aluminum composite pipes is characterized in that concrete steps comprise:
(100), the intermediate alloy melting: drop into purity in the crucible and be 99.99% tin slab, respectively with copper, antimony, silver, nickel, that cerium is smelted into intermediate alloy is subsequent use;
(200) casting: choose purity on request and be 99.99% tin slab and corresponding intermediate alloy melting; And be cast into the tin post; Said each component of tin post and percentage by weight are: Sb 1%-20%, Cu 0%-5%, Ni 0%-6%, Ag 0%-5%, Ce 0%-2%, and surplus is Sn and inevitable impurity;
(300), extruding: the preheating hydraulic press, set that horizontal bridge of the nose temperature is 70-80 ℃ before the hydraulic press, die head temperature is 113-123 ℃; The rosin bucket temperature is 130-150 ℃, treat that the machine preheating is good after, the tin post is spread on the material loading seat that suitable lubricating oil is put in 450T solder stick hydraulic press; Scaling powder is poured in the hydraulic press rosin bucket; And be incubated in 130-150 ℃, covering the rosin bung, feeding pressure is 2-3kg/cm
2Nitrogen; Primer fluid press, extrusion speed are 4-5min/ tin post, and squeeze pressure is 140-190MPa, and the control scaling powder is produced the scolding tin line of Φ 14 band scaling powder cores between 1.5%-3.0%.
3. (400), rolling: roller mill transfers to manual mode earlier, the scolding tin line of Φ 14 band scaling powder cores is passed successively roll wheel, errorless after, with the spray mode dissolubility cooling-lubricant of fetching boiling water, go out linear velocity and transfer to 40m/min, the outlet line directly is 5.0mm;
(500), wire drawing: first preheating wire drawing machine cools off cutting fluid, and fluid temperature is controlled at 60 ℃-70 ℃, starts the machine, and line directly for the solder of 5mm passes the wire drawing machine grinding tool successively, is gone out linear diameter and is controlled between the 1.0mm-3.0mm, is convenient to follow-up system ring;
(600), Cheng Huan: solder successively through three fabric wheels of ring forming machine, is sent into solder the line sending mouth of ring forming machine at last, start ring forming machine, frequency conversion speed is 80-120 time/min, can make the environmental protection weld-ring that different size is used for copper aluminum composite pipes.
4. the preparation method of the special-purpose weld-ring of copper aluminum composite pipes according to claim 3 is characterized in that the detailed process of said step (100) is: adding 80% purity according to mass fraction is that 99.99% pure tin is in crucible; Heat temperature raising to 250 ℃-280 ℃ adds the waterglass of 2cm again in crucible, add than copper, antimony, silver, nickel, the cerium of getting 20% respectively according to mass fraction; In 1200 ℃ of-1400 ℃ of smeltings, keep this temperature 0.5-1h, prepare mass fraction respectively than being tin 80 bronze medals 20; Tin 80 antimony 20; Tin 80 silver medals 20, tin 80 nickel 20, the intermediate alloy of tin 80 ceriums 20; Through cooling, between 350 ℃ of-400 ℃ of temperature, be cast into alloy bar or piece to intermediate alloy with subsequent use then.
5. the preparation method of the special-purpose weld-ring of copper aluminum composite pipes according to claim 3 is characterized in that the detailed process of said step (200) is: the tin of predetermined number is put into the horizontal caster smelting furnace, be warming up to 350 ℃; According to formula rate, add above-mentioned intermediate alloy, warming while stirring is stirred and to be not less than 20min, is warming up between 420 ℃-450 ℃ of the cast temperatures and keeps this temperature range; Add solder dross reducing agent, the scruff that is stirred to liquid level becomes ash dress back fully to be got with strainer, continues to add antioxidant and stir 5min; Alloy liquid prepares the back and starts the tin liquor pump; In the incubator with alloy liquid suction horizontal caster, temperature is controlled at 420 ℃-450 ℃, opens cooling circulating water; Start horizontal caster, be cast into the tin post to alloy liquid.
6. the preparation method of the special-purpose weld-ring of copper aluminum composite pipes according to claim 3; It is characterized in that; The scaling powder preparation method is in the said step (300): accurately weighing water-white Foral is in electric furnace; Constant temperature melts between 130 ℃-150 ℃, treats that rosin fusing back adds the weld-ring special active agent that meets the rosin ratio that takes by weighing, and stirs 20min-30min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394826A (en) * | 2013-08-22 | 2013-11-20 | 四川朗峰电子材料有限公司 | Technological method for reducing defect of extrusion rod |
| CN104384758A (en) * | 2014-09-28 | 2015-03-04 | 杭州华光焊接新材料股份有限公司 | Brass strip core flux-cored welding ring and preparation method thereof |
| CN108941967A (en) * | 2018-08-09 | 2018-12-07 | 重庆源晶电子材料有限公司 | A kind of low temperature has core solder stick and preparation method thereof |
| CN110957290A (en) * | 2018-09-27 | 2020-04-03 | 英飞凌科技股份有限公司 | Semiconductor device comprising solder compound comprising compound SN/SB |
| WO2024101041A1 (en) * | 2022-11-07 | 2024-05-16 | 富士電機株式会社 | Solder material |
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| CN101239425A (en) * | 2008-03-13 | 2008-08-13 | 浙江省冶金研究院有限公司 | Leadless high-temperature electronic solder and preparation |
| CN102059469A (en) * | 2010-11-29 | 2011-05-18 | 力创(台山)电子科技有限公司 | Manufacture method of environment-friendly soldering ring for copper aluminum composite pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103394826A (en) * | 2013-08-22 | 2013-11-20 | 四川朗峰电子材料有限公司 | Technological method for reducing defect of extrusion rod |
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| CN104384758A (en) * | 2014-09-28 | 2015-03-04 | 杭州华光焊接新材料股份有限公司 | Brass strip core flux-cored welding ring and preparation method thereof |
| CN108941967A (en) * | 2018-08-09 | 2018-12-07 | 重庆源晶电子材料有限公司 | A kind of low temperature has core solder stick and preparation method thereof |
| CN110957290A (en) * | 2018-09-27 | 2020-04-03 | 英飞凌科技股份有限公司 | Semiconductor device comprising solder compound comprising compound SN/SB |
| WO2024101041A1 (en) * | 2022-11-07 | 2024-05-16 | 富士電機株式会社 | Solder material |
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Application publication date: 20120912 |