CN1172713A - BNi-2 alloy high-temp. brazing welding rod and its preparing method - Google Patents
BNi-2 alloy high-temp. brazing welding rod and its preparing method Download PDFInfo
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- CN1172713A CN1172713A CN 97116263 CN97116263A CN1172713A CN 1172713 A CN1172713 A CN 1172713A CN 97116263 CN97116263 CN 97116263 CN 97116263 A CN97116263 A CN 97116263A CN 1172713 A CN1172713 A CN 1172713A
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Abstract
A high-temp soldering electrode of BNi-2 alloy contains such components (wt%) as Cr (6-8), Si (4-5), B (2.75-3.5), Fe (2.5-3.5), C (less than 0.06), Ni (rest) and is made up through high-temp smelting, sucking molten alloy into crystallizer and cooling. Its advantages are high anti-oxidation temp up to 9500 deg. C, high solt fog corrosion resistance comparable to GH625 alloy, tensile strength higher than 500 MPa and better infiltration nature. It is suitable for solding big workpieces.
Description
A kind of BNi-2 alloy high-temp soldering bar and preparation method thereof relates to a kind of nickel-base alloy cored solder, is used for metallic high temperature soldering field, particularly under argon shield, is used for the welding of nickel-base alloy, cobalt-base alloys and stainless steel and mild steel class alloy.
At present, much more production and the application study at home and abroad of BNi-2 alloy brazed have report.Made report as characteristic and the preparation method to the BNI-2 solder alloy in the document below.Comprise document (1) PERFORMANCE OFBNi-2ADN BNiAMORPHOUS ALLOY FLLOS IN BRAZING OF 409 FERRITIC STAILESSSTEEL, PUBL DY AWS, MAINI FL, USA P265-266; Document (2) Brazing Characteristicsof Modified Ni-Cr-B-Si-Fe Based Vuz Powder Brazing Alloy.ZvaracskeSpravy (Weldding New) 42, (2), 37-43 1992; Research " the Shanghai steel grinds " 1991[4 of document (3) amorphous state soldering], P76-79 etc.Document (1) and document (3) are to introduce to produce BNi-2 amorphous paper tinsel band and brazing characteristics thereof with quench.Document (2) has reported that the employing atomization is produced the BNi-2 alloy powder and brazing characteristics is studied.But the BNi-2 solder alloy mainly is to use with paper tinsel band and powder brazing alloy form at present.And no matter be paper tinsel band cored solder or powder cored solder, only be adapted at using in the vacuum drying oven or in the protective atmosphere anchor clamps to carry out soldering.Welding comes following shortcoming in the stove, when welding the workpiece of irregularity, and the processing difficulties of its anchor clamps.Because large-scale workpiece can not be put into stove, can't adopt furnace brazing method,, limited the range of application of BNi-2 alloy brazed material so can't use the BNi-2 solder alloy to realize the workpiece welding operation.And when adopting existing BNi-2 solder alloy to carry out in the stove welding operation, must be through vacuumizing processes such as (or fill and protect gas), heating and heat preservation, cooling, the production cycle is long, influences the raising of production efficiency.
Purpose of the present invention is exactly in order to overcome existing BNi-2 solder alloy above shortcomings, provide a kind of be fit to baroque workpiece soldering, simple, the form of solder of process condition is simple and easy to novel B Ni-2 alloy high-temp cored solder of usefulness and preparation method thereof.
A kind of BNi-2 alloy high-temp soldering bar, it is characterized in that its alloy composition (percentage by weight) is: Cr 6%～8%; Si 4%～5%; B 2.75%～3.5%; Fe 2.5%～3.5%, and surplus is Ni and unavoidable impurities, and wherein C content is less than 0.06%.
The preparation method of BNi-2 alloy high-temp soldering bar of the present invention, it is characterized in that: the BNi-2 alloy high-temp brazing alloy that will meet the composition requirement melts under normal pressure, with smoke for negative pressure, its cavity shape is the crystallizer of required soldering bar appearance and size, the alloy liquation is sucked cooling forming in the crystallization, and process conditions are: the suction casting temperature of alloy liquation is 1300～1500 ℃; Vacuum when inhaling casting in the crystallizer is 0.005MPa～0.04MPa; Cooling naturally in air then.
A kind of BNi-2 alloy high-temp soldering bar of the present invention can be used for metallic high temperature soldering field effectively, particularly under argon shield, is used for the welding of nickel-base alloy, cobalt-base alloys and stainless steel and mild steel class alloy.Solder connects the oxidation resistance temperature of nutriment head from self and soldering can be up to 9500 ℃, salt fog resistance and GH
625Alloy phase is worked as, and the room temperature tensile strength of cored solder self and soldered fitting is all greater than 500Mpa, and is good to the wellability of soldering base material.The preparation method of BNi-2 alloy high-temp soldering bar of the present invention has solved because of containing a large amount of borides in the alloy, and quality is extremely crisp, can not become the problem of welding wire with conventional cold and hot working.Use soldering bar of the present invention, under argon shield,, can directly weld the workpiece of different shape and specification,, also be not subjected to the restriction of workpiece size, solved the Welding Problems of large-scale workpiece both without anchor clamps with the argon arc brazing mode.Owing to do not use soldering oven, can raise the efficiency, can reduce cost again.It is a kind of desirable high temperature brazing bar and preparation method thereof.
Below in conjunction with example to BNi-2 alloy high-temp soldering bar of the present invention and the preparation method be described further.
A kind of BNi-2 alloy high-temp soldering bar, it is characterized in that its alloy composition (percentage by weight) is: Cr 6%～8%; Si 4%～5%; B 2.75%～3.5%; Fe 2.5%～3.5%, and surplus is Ni and unavoidable impurities, and wherein C content is less than 0.06%.Its preparation method melts under normal pressure for the BNi-2 alloy high-temp brazing alloy that will meet the composition requirement, with inside be negative pressure, its cavity shape is the crystallizer of required soldering bar appearance and size, the alloy liquation is sucked cooling forming in the crystallizer, and process conditions are: the suction casting temperature of alloy liquation is 1300～1500 ℃; Vacuum when inhaling casting in the crystallizer is 0.005MPa～0.04MPa; Cooling naturally in air then.
Embodiment 1
BNi-2 alloy high-temp solder composition: Cr 6.5%; Si 4%; B 2.8%; Fe 2.6%, and surplus is Ni and unavoidable impurities, and wherein C content is less than 0.06%.The batching total amount is 5Kg.Adopt high frequency material mode, under argon shield, melt, when melt temperature is 1500 ℃, inhale casting.Adopting internal diameter is that 1.5mm, thickness are that the quartz ampoule of 2mm is made crystallizer, and casting is inhaled in preheating when the vacuum in the quartz ampoule reaches 0.02MPa, promptly obtain 1.50 * 400mm welding rod.
Embodiment 2
BNi-2 alloy high-temp solder composition: Cr 7.0%; Si 4.8%; B 3.5%; Fe 3.%, and surplus is Ni and unavoidable impurities, and wherein C content is less than 0.06%.The batching total amount is 5Kg.Adopt high frequency material mode, under argon shield, melt, when melt temperature is 1400 ℃, inhale casting.Adopting internal diameter is that 2.5mm, thickness are that the quartz ampoule of 2mm is made crystallizer, and casting is inhaled in preheating when the vacuum in the quartz ampoule reaches 0.04MPa, promptly obtain 2.50 * 550mm welding rod.
Embodiment 3
BNi-2 alloy high-temp solder composition: Cr 7.5%; Si 4.5%; B 3.0%; Fe 2.8%, and surplus is Ni and unavoidable impurities, and wherein C content is less than 0.06%.The batching total amount is 5Kg.Adopt high frequency material mode, under argon shield, melt, when melt temperature is 1300 ℃, inhale casting.Adopting internal diameter is that 2.0mm, thickness are that the quartz ampoule of 1.5mm is made crystallizer, and casting is inhaled in preheating when the vacuum in the quartz ampoule reaches 0.005MPa, promptly obtain the welding rod of 2.0 * 450mm.
Claims (2)
1. a BNi-2 alloy high-temp soldering bar is characterized in that its alloy composition (percentage by weight) is: Cr6%～8%; Si 4%～5%; B 2.75%～3.5%; Fe 2.5%～3.5%, and surplus is Ni and unavoidable impurities, and wherein C content is less than 0.06%.
2. the preparation method of a kind of BNi-2 alloy high-temp soldering bar according to claim 1, it is characterized in that: the BNi-2 alloy high-temp brazing alloy that will meet the composition requirement melts under normal pressure, with smoke for negative pressure, its cavity shape is the crystallizer of required soldering bar appearance and size, the alloy liquation is sucked cooling forming in the crystallizer, and process conditions are: the suction casting temperature of alloy liquation is 1300～1500 ℃; Vacuum when inhaling casting in the crystallizer is 0.005MPa～0.04MPa; Cooling naturally in air then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97116263 CN1172713A (en) | 1997-09-08 | 1997-09-08 | BNi-2 alloy high-temp. brazing welding rod and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97116263 CN1172713A (en) | 1997-09-08 | 1997-09-08 | BNi-2 alloy high-temp. brazing welding rod and its preparing method |
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| CN1172713A true CN1172713A (en) | 1998-02-11 |
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| CN 97116263 Pending CN1172713A (en) | 1997-09-08 | 1997-09-08 | BNi-2 alloy high-temp. brazing welding rod and its preparing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201637A (en) * | 2015-09-24 | 2015-12-30 | 宁波申江科技股份有限公司 | Intercooler |
| CN106640402A (en) * | 2016-12-12 | 2017-05-10 | 日照金港活塞有限公司 | Vacuum high-temperature brazing piston and manufacturing process thereof |
| CN108285997A (en) * | 2017-12-19 | 2018-07-17 | 重庆材料研究院有限公司 | It is used to prepare the material and preparation method of nickel-based brazing cream |
| CN108555276A (en) * | 2018-01-23 | 2018-09-21 | 宁波华帆金属材料科技有限公司 | A kind of corrosion-resistant self-fluxing alloyed powder |
| CN109909641A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院金属研究所 | A kind of high temperature alloy connection Co-based powder solder and its preparation method and application |
| CN115106680A (en) * | 2022-06-21 | 2022-09-27 | 安徽工程大学 | Preparation method and brazing method of rare earth Nd-doped multi-element nickel-based alloy brazing filler metal |
-
1997
- 1997-09-08 CN CN 97116263 patent/CN1172713A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201637A (en) * | 2015-09-24 | 2015-12-30 | 宁波申江科技股份有限公司 | Intercooler |
| CN105201637B (en) * | 2015-09-24 | 2018-07-17 | 宁波申江科技股份有限公司 | Charge air cooler |
| CN106640402A (en) * | 2016-12-12 | 2017-05-10 | 日照金港活塞有限公司 | Vacuum high-temperature brazing piston and manufacturing process thereof |
| CN109909641A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院金属研究所 | A kind of high temperature alloy connection Co-based powder solder and its preparation method and application |
| CN108285997A (en) * | 2017-12-19 | 2018-07-17 | 重庆材料研究院有限公司 | It is used to prepare the material and preparation method of nickel-based brazing cream |
| CN108555276A (en) * | 2018-01-23 | 2018-09-21 | 宁波华帆金属材料科技有限公司 | A kind of corrosion-resistant self-fluxing alloyed powder |
| CN115106680A (en) * | 2022-06-21 | 2022-09-27 | 安徽工程大学 | Preparation method and brazing method of rare earth Nd-doped multi-element nickel-based alloy brazing filler metal |
| CN115106680B (en) * | 2022-06-21 | 2023-10-10 | 安徽工程大学 | Preparation method and brazing method of rare earth Nd-doped multi-element nickel-based alloy brazing filler metal |
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