CN104842088A - Nickel-based welding flux for braze welding on tube plate connectors and method for manufacturing nickel-based welding flux - Google Patents
Nickel-based welding flux for braze welding on tube plate connectors and method for manufacturing nickel-based welding flux Download PDFInfo
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- CN104842088A CN104842088A CN201510299054.7A CN201510299054A CN104842088A CN 104842088 A CN104842088 A CN 104842088A CN 201510299054 A CN201510299054 A CN 201510299054A CN 104842088 A CN104842088 A CN 104842088A
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- nickel
- welding flux
- solder
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- melting
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Classifications
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- 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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses nickel-based welding flux for braze welding on tube plate connectors and a method for manufacturing the nickel-based welding flux. The nickel-based welding flux comprises, by weight, 15-25% of Cu, 9-12% of P, 0.1-0.8% of Si and the balance Ni. The method includes proportioning the Cu, the P, the Si and the Ni, then melting the Cu, the P, the Si and the Ni in a vacuum induction furnace, starting a vacuum pump, switching on an induction power source when the vacuum degree is 1.033*10<-2>-1.033*10<-3>Pa, and melting the Cu, the P, the Si and the Ni at the melting temperatures of 1100-1200 DEG C; preserving heat for 3-6 minutes after the Cu, the P, the Si and the Ni are melted, filling the vacuum induction furnace with argon, and pouring alloy liquid into a heat-insulation furnace when the pressures reach 0.5-0.8 times the atmospheric pressure; atomizing the alloy liquid in an atomizing bucket by the aid of a nozzle of the heat-insulation furnace; classifying the atomized alloy liquid by the aid of a powder classifier to form the nickel-based welding flux. The nickel-based welding flux and the method have the advantages that the silicon is added into the nickel-based welding flux, so that the melting point of the welding flux is lowered when the welding flux is used for braze welding on the tube plate connectors, capillary actions and the wettability of the welding flux in welding seams can be improved, and the seams can be filled with the welding flux after the welding flux is melted; welded tubes are high in connector strength and pressure resistance and free of leakage and are impact-resistant, and the like.
Description
Technical field
The present invention relates to a kind of Nickel Matrix Solder of tube sheet joint soldering, particularly a kind of Nickel Matrix Solder for tube sheet joint soldering and preparation method thereof.
Background technology
Engine is in China's communications and transportation, capital construction, agricultural modernization, the modernization of national defense and promotion and promote economic development, to upgrade the living standards of both urban and rural residents etc. in play an important role, be widely used as the leading supporting power of automobile, construction machine, agricultural machinery, boats and ships, generating equipment, military hardware, geology and oil-well rig and graden machine and various universal machine.And pipe-line system is the important component part of engine, the conveying of the fuel oil in engine, lubricating oil, cooling water all be unable to do without pipe-line system, not only the quantity of pipe fitting is many, kind is also many, and the quality condition of quality to engine of the performance such as fatigue resistance, tensile strength, anti-leak degree of each pipe fitting has decisive role.The pipe fitting majority used in current engine is hard metal tube, the problems such as it exists in process that outside drawing crack, inner side are wrinkling to some extent, the reliability of solder joints difference of pipe and flange, this has become the bottleneck restricting engine manufacture processing and increased quality.For solving the processing problems of pipe fitting, sufficient attention is given to this problem in each manufactory commercial city closely during the last ten years, drops into a large amount of manpower and materials, comprises and introduces advanced pipe fitting process equipment from external, still can not meet processing and the quality requirement of pipe fitting.
Bundy tube has certain superiority in many cases relative to plastic tube, multiple tube and copper pipe: intensity is high, corrosion resistance is strong, good toughness, anti-vibrating and impact and the excellent feature of anti-seismic performance, low temperature does not become fragile, safe and reliable, economic and practical, be widely used, become the new trend of domestic pipe-line system development.Applying of it, can not only bring considerable economic benefit for enterprise, also for country economizes on resources, reduces consumption.Except price advantage, supporting method of attachment ensures that the reliability of pipe fitting becomes the principal element determining Bundy tube development.
Tube sheet joint adopts brazing to have obvious advantage: soldering is a kind of metallurgical binding, brazing temperature is low, pipe and joint indeformable, reliable in quality, intensity are high, good seal performance, and corrosion resistance is strong, permanent use can not be leaked, pipe fitting long service life, simple to operate, the needs of joint quick assembling can be met.
Brazing material is the filling metal forming soldered fitting, and the quality of soldered fitting depends on brazing material to a great extent.Brazing material not only will have good soldering processes performance (as wetability, mobility), but also needs to have good non-oxidizability, heat resistance and bond strength etc., also will have suitable fusing point and brazing temperature simultaneously.The corrosion resistance of usual basis in special media and know that the applicability of operating temperature selects cored solder at oneself.At present, the middle temperature brazing material used both at home and abroad has copper base, money base and Ni-based solder.Money base cored solder is the conventional cored solder of tube sheet joint, has high ductility, good mobility and wellability, but containing a large amount of silver in solder, price is higher, and causes the corrosion resistance of mother metal to reduce with the conference of tube sheet joint matrix difference; The brazing temperature of copper-based solder is high and must carry out soldering in protective atmosphere, and therefore the application of spelter solder is generally only limited to furnace brazing.Ni-based solder has excellent decay resistance and relative cost is lower, therefore, is widely used in the fields such as machinery, chemical industry, Aeronautics and Astronautics.The kind of Ni-based solder is a lot, develops a kind of Nickel-based brazing material of low-cost and high-performance, can reduce the production cost of pipe fitting for engine pipe fitting, improves pipe fitting quality.
Summary of the invention
For the deficiency of existing steel pipe plate joint brazing material, the object of the present invention is to provide a kind of Nickel Matrix Solder for tube sheet joint soldering and preparation method thereof, this Ni-based solder not only has suitable fusing point and brazing temperature, and has good wellability and adhesion with steel and copper alloy surface.
The object of the invention is to be achieved through the following technical solutions:
One, for a Nickel Matrix Solder for tube sheet joint soldering, percentage, raw material components is as follows:
Cu 15～25%，
P 9～12%，
Si 0.1～0.8%，
Ni surplus.
Two, for a preparation method for the Nickel Matrix Solder of tube sheet joint soldering, percentage, raw material components is as follows: Cu 15 ~ 25%, P 9 ~ 12%, Si 0.1 ~ 0.8%, Ni surplus; The raw material prepared is put into vaccum sensitive stove melt, open vavuum pump, vacuum is 1.033 × 10
-2~ 1.033 × 10
-3during Pa, open induction power supply melting, fusion temperature 1100 ~ 1200 DEG C, 3 ~ 6 minutes are incubated after melting down, when pouring argon gas to 0.5 ~ 0.8 atmospheric pressure, aluminium alloy is poured into holding furnace, by holding furnace let slip a remark atomization bucket in be atomized, the solder alloy of atomization, by classifying device for powder classification, makes the solder powder of required granularity.
The beneficial effect that the present invention has is:
When Nickel Matrix Solder of the present invention is used for tube sheet joint soldering, owing to adding a certain amount of Si, reduce the fusing point of solder, effectively improve the capillarity of solder in weld seam and wellability, can fill up seam after solder fusing, smooth welding joint is full; The features such as it is high, shock-resistant that the pipe welded has strength of joint, withstand voltage height, non-leakage.
Accompanying drawing explanation
Fig. 1 fusion temperature curve that to be Nickel Matrix Solder measure without the synchronization discrepancy thermal analyzer of silicon.
Fig. 2 is the fusion temperature curve that Nickel Matrix Solder has the synchronization discrepancy thermal analyzer of silicon and measures.
Fig. 3 is that Nickel Matrix Solder is without silicon soldering mild steel and Bundy tube joint welding microscopic structure.
Fig. 4 is that Nickel Matrix Solder has silicon soldering mild steel and Bundy tube joint welding microscopic structure.
Fig. 5 is Nickel Matrix Solder without the Elemental redistribution of silicon soldering mild steel and Bundy tube joint welding tissue.
Fig. 6 is the Elemental redistribution that Nickel Matrix Solder has silicon soldering mild steel and Bundy tube joint welding tissue.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Ni-based new solder of the present invention is used for the soldering of tube sheet joint, and concrete preparation method comprises the following steps:
1, by the various raw material of aforementioned weight percentage precise, wherein Cu, Ni add with an electrolysis material, and Si adds with High Purity Polycrystalline state, and P adds with nickel phosphorus intermediate alloy form.The raw material prepared is put into vaccum sensitive stove and is melted, and open vavuum pump, vacuum is 1.033 × 10
-2~ 1.033 × 10
-3during Pa, open induction power supply melting, fusion temperature is 1100 ~ 1200 DEG C, after melting down, be incubated 3 ~ 6 minutes.
When 2, pouring argon gas to 0.5 ~ 0.8 atmospheric pressure in vaccum sensitive stove, aluminium alloy is poured in the tundish of holding furnace, by its let slip a remark atomization bucket in be atomized.Atomization adopts high pressure high pure nitrogen.
3, the solder alloy of atomization is by classifying device for powder classification, makes the solder powder of required granularity.
embodiment 1
Add by 50% by mass percent Cu 18%, Si 0.3%, P 11%(Ni-P22 intermediate alloy) and the various raw material of nickel surplus precise, wherein Cu, Ni add with an electrolysis material, and Si adds with High Purity Polycrystalline state, and P adds with Ni-P intermediate alloy form.The raw material prepared is put into vaccum sensitive stove and is melted, and open vavuum pump, vacuum is 1.033 × 10
-3during Pa, open induction power supply melting, fusion temperature is 1150 DEG C, after melting down, be incubated 3 minutes.When pouring argon gas to 0.8 atmospheric pressure in vaccum sensitive stove, aluminium alloy is poured in the tundish of holding furnace, by its let slip a remark atomization bucket in be atomized.Atomization adopts high pressure high pure nitrogen.The brazing filler metal alloy of atomization, by classifying device for powder classification, makes the solder powder of required granularity.As shown in Figure 1 and Figure 2, after adding Si, solidus temperature is 885 DEG C and has dropped to 877 DEG C the fusion temperature curve that the synchronization discrepancy thermal analyzer of solder alloy measures, and peak temperature has dropped to 890 DEG C from 894 DEG C, and brazing temperature can at about 940 DEG C.Nickel Matrix Solder brazing welding Elemental redistribution as shown in Figure 3, Figure 4, brazed pipe joint soldering microscopic structure as shown in Figure 5, Figure 6, after adding Si, solder and steel or Bundy tube junction boundary diffusion and course of dissolution fiercer, bond strength is higher.
embodiment 2
Add by 54.5% by mass percent Cu 25%, Si 0.1%, P 12%(Ni-P22 intermediate alloy) and the various raw material of nickel surplus precise, wherein Cu, Ni add with an electrolysis material, and Si adds with High Purity Polycrystalline state, and P adds with Ni-P intermediate alloy form.The raw material prepared is put into vaccum sensitive stove and is melted, and open vavuum pump, vacuum is 1.033 × 10
-3during Pa, open induction power supply melting, fusion temperature is 1200 DEG C, after melting down, be incubated 5 minutes.When pouring argon gas to 0.6 atmospheric pressure in vaccum sensitive stove, aluminium alloy is poured in the tundish of holding furnace, by its let slip a remark atomization bucket in be atomized.Atomization adopts high pressure high pure nitrogen.The solder alloy of atomization, by classifying device for powder classification, makes the solder powder of required granularity.The fusion temperature curve that the synchronization discrepancy thermal analyzer of solder alloy measures, Nickel Matrix Solder brazing welding Elemental redistribution and brazed pipe joint soldering microscopic structure substantially consistent with embodiment 1.
embodiment 3
Add by 40.9% by mass percent Cu 15%, Si 0.8%, P 9%(Ni-P22 intermediate alloy) and the various raw material of nickel surplus precise, wherein Cu, Ni add with an electrolysis material, and Si adds with High Purity Polycrystalline state, and P adds with Ni-P intermediate alloy form.The raw material prepared is put into vaccum sensitive stove and is melted, and open vavuum pump, vacuum is 1.033 × 10
-2during Pa, open induction power supply melting, fusion temperature is 1100 DEG C, after melting down, be incubated 6 minutes.When pouring argon gas to 0.5 atmospheric pressure in vaccum sensitive stove, aluminium alloy is poured in the tundish of holding furnace, by its let slip a remark atomization bucket in be atomized.Atomization adopts high pressure high pure nitrogen.The solder alloy of atomization, by classifying device for powder classification, makes the solder powder of required granularity.The fusion temperature curve that the synchronization discrepancy thermal analyzer of solder alloy measures, Nickel Matrix Solder brazing welding Elemental redistribution and brazed pipe joint soldering microscopic structure substantially consistent with embodiment 1.
Above-described embodiment is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (2)
1. for a Nickel Matrix Solder for tube sheet joint soldering, it is characterized in that: percentage, raw material components is as follows:
Cu 15～25%，
P 9～12%，
Si 0.1～0.8%，
Ni surplus.
2. for a preparation method for the Nickel Matrix Solder of tube sheet joint soldering, it is characterized in that: percentage, raw material components is as follows: Cu 15 ~ 25%, P 9 ~ 12%, Si 0.1 ~ 0.8%, Ni surplus; The raw material prepared is put into vaccum sensitive stove melt, open vavuum pump, vacuum is 1.033 × 10
-2~ 1.033 × 10
-3during Pa, open induction power supply melting, fusion temperature 1100 ~ 1200 DEG C, 3 ~ 6 minutes are incubated after melting down, when pouring argon gas to 0.5 ~ 0.8 atmospheric pressure, aluminium alloy is poured into holding furnace, by holding furnace let slip a remark atomization bucket in be atomized, the solder alloy of atomization, by classifying device for powder classification, makes the solder powder of required granularity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510299054.7A CN104842088A (en) | 2015-06-03 | 2015-06-03 | Nickel-based welding flux for braze welding on tube plate connectors and method for manufacturing nickel-based welding flux |
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|---|---|---|---|
| CN201510299054.7A CN104842088A (en) | 2015-06-03 | 2015-06-03 | Nickel-based welding flux for braze welding on tube plate connectors and method for manufacturing nickel-based welding flux |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381059A (en) * | 2018-05-09 | 2018-08-10 | 南京固华机电科技有限公司 | A kind of Cu-Sn-Ti superalloy solders and preparation method thereof containing Fe, Ni, Si |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3450527A (en) * | 1966-12-09 | 1969-06-17 | Eutectic Welding Alloys | Welding alloy |
| JPS60106691A (en) * | 1983-11-15 | 1985-06-12 | Hitachi Metals Ltd | Alloy for brazing |
| CN1102150A (en) * | 1993-10-23 | 1995-05-03 | 浙江省冶金研究所 | Ni-P-Cu series nickel base brazing material |
| US5496391A (en) * | 1992-12-04 | 1996-03-05 | Castolin S.A. | Material and a method for forming a protective coating on a substrate of a copper-based alloy |
| CN100441363C (en) * | 2006-04-19 | 2008-12-10 | 华中科技大学 | High-temperature brazing alloy welding flux for ceramic and steel welding and its preparing method |
| CN101898283A (en) * | 2009-06-01 | 2010-12-01 | 李昕 | Low-temperature nickel-based solder for soldering |
| CN102672368A (en) * | 2012-05-25 | 2012-09-19 | 天津市北方涂层材料有限公司 | Novel wear-resisting nickel-base overlaying alloy powder |
| CN102851544A (en) * | 2012-10-09 | 2013-01-02 | 天津市铸金表面工程材料科技开发有限公司 | Corrosion-resistant nickel-base alloy overlay welding powder |
| CN103071945A (en) * | 2012-12-25 | 2013-05-01 | 浙江科技学院 | Nickel-based solder used for welding diamond and preparation method for nickel-based solder |
-
2015
- 2015-06-03 CN CN201510299054.7A patent/CN104842088A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3450527A (en) * | 1966-12-09 | 1969-06-17 | Eutectic Welding Alloys | Welding alloy |
| JPS60106691A (en) * | 1983-11-15 | 1985-06-12 | Hitachi Metals Ltd | Alloy for brazing |
| US5496391A (en) * | 1992-12-04 | 1996-03-05 | Castolin S.A. | Material and a method for forming a protective coating on a substrate of a copper-based alloy |
| CN1102150A (en) * | 1993-10-23 | 1995-05-03 | 浙江省冶金研究所 | Ni-P-Cu series nickel base brazing material |
| CN100441363C (en) * | 2006-04-19 | 2008-12-10 | 华中科技大学 | High-temperature brazing alloy welding flux for ceramic and steel welding and its preparing method |
| CN101898283A (en) * | 2009-06-01 | 2010-12-01 | 李昕 | Low-temperature nickel-based solder for soldering |
| CN102672368A (en) * | 2012-05-25 | 2012-09-19 | 天津市北方涂层材料有限公司 | Novel wear-resisting nickel-base overlaying alloy powder |
| CN102851544A (en) * | 2012-10-09 | 2013-01-02 | 天津市铸金表面工程材料科技开发有限公司 | Corrosion-resistant nickel-base alloy overlay welding powder |
| CN103071945A (en) * | 2012-12-25 | 2013-05-01 | 浙江科技学院 | Nickel-based solder used for welding diamond and preparation method for nickel-based solder |
Non-Patent Citations (3)
| Title |
|---|
| 张静政等: "《初级电焊工应知应会问答》", 30 September 1989 * |
| 祝邦文: "镍基新焊料", 《浙江冶金》 * |
| 祝邦文等: "镍基新焊料在电子工业上的开发应用", 《机械工程材料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381059A (en) * | 2018-05-09 | 2018-08-10 | 南京固华机电科技有限公司 | A kind of Cu-Sn-Ti superalloy solders and preparation method thereof containing Fe, Ni, Si |
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Application publication date: 20150819 |