CN1055883C - High-smelting point and low-vapor pressure solder alloy powder for soldering stain-less steel container and its preparation - Google Patents
High-smelting point and low-vapor pressure solder alloy powder for soldering stain-less steel container and its preparation Download PDFInfo
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- CN1055883C CN1055883C CN97121787A CN97121787A CN1055883C CN 1055883 C CN1055883 C CN 1055883C CN 97121787 A CN97121787 A CN 97121787A CN 97121787 A CN97121787 A CN 97121787A CN 1055883 C CN1055883 C CN 1055883C
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Abstract
The present invention relates to copper-base solder alloy powder and a preparation method thereof. The copper-base solder alloy has the constituents of 19 to 21% of silver, 10 to 15% of tin, 3.5 to 4.5% of nickel, 0.05 to 0.5% of chromium and residual copper. Material is matched according to the constituents of the alloy, and the matched material is melted under inert gas atmosphere and 900 to 1050 DEG C, and cast into prealloying ingots. After the prealloying ingots are carried out under the inert gas atmosphere and the 900 to 1050 DEG C, inert gas is used as atomizing steam for carrying out atomization, and the atomizing pressure is from 1.5 to 3.0MPa. the product of the present invention has the advantages of low oxygen content, good sphericity degree, uniform constituents, minute grain diameter, high melting point and low vapor pressure, and the present invention increases the soldering performance of the solder alloy powder.
Description
The present invention relates to the coper-base solder alloy powder, the high-smelting point and low-vapor pressure solder alloyed powder that is used for welding stainless steel vessel under the vacuum state and preparation method thereof of more specifically saying so.
As the brazing filler metal alloy that brazing filler metal is used, generally require it to have good processing properties, and good wetability is arranged by the brazing filler metal part, welding point has high strength.What stainless steel weldment welding was at present adopted is solder alloy, is mainly the welding rod alloy of money base or nickel-base alloy.
Purpose of the present invention just is to develop under a kind of vacuum state, the high-smelting point and low-vapor pressure solder alloyed powder of welding stainless steel vessel.
Another object of the present invention is to work out the preparation method that a kind of production is applicable to the high-smelting point and low-vapor pressure solder alloyed powder of welding stainless steel vessel under the vacuum state.
The soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of the present invention, percentage meter by weight, its alloying component is a silver 19～21, tin 10～15, nickel 3.5～4.5, chromium 0.05～0.5, surplus is a copper.
In the alloying component of high-smelting point and low-vapor pressure solder alloyed powder, again in percentage by weight, its alloying component is a silver 20, tin 11～13, and Ni 3.8～4.2, and Cr 0.05～0.1 surplus copper is good.
Be to be matrix in system combinations, add Sn, Ni, Cr, form the Cu-Ag-Sn-Ni-Cr multicomponent alloy with Cu, Ag.Cu, Ag can provide stainless steel braze welding spare connecting portion higher soldering strength, compare with other systems such as Ag-Cu-Sn-In that are processed into wire rod or sheet material, because adopting, the present invention produces the soldering processes that the brazing filler metal alloy atomized powder is prepared soft pricker cream, the Sn that can add more amount, to adjust the melting range of alloy, improve brazing filler metal alloy and stainless steel brazing filler metal part wettability of the surface; The content of Ni element is adjustable integrates golden melting range.Constituent element Cu, Ni can form a small amount of Cu-Sn, Ni-Sn with Sn or Cu-Ni-Sn is middle mutually, and this is verified from the sample XRD facies analysis collection of illustrative plates shown in the accompanying drawing 4.Under the atomization condition of rapid solidification, can make grain refinement in the middle of a small amount of, improve the weld strength at soldering position.The adding of Ni, Sn alloying element can also improve the surface smoothness after the soldering, but the affiliation that adds of excess amounts of tin produces the harmful effect that processability descends, and a small amount of Cr element helps to improve the bond strength of soldering weldment.
The preparation method of the high-smelting point and low-vapor pressure solder alloyed powder of a kind of Kromarc container of the present invention; the percetage by weight meter; by alloying component; silver 19～21; tin 10～15; nickel 3.5～4.5, chromium 0.05～0.5, surplus is a copper; take by weighing silver; part copper; tin; nickel and copper chromium intermediate alloy batching in the 900-1050 ℃ of fusing of will preparing burden, are cast into the prealloy ingot under the inert gas atmosphere protection; under inert gas atmosphere protection in 900-1050 ℃ with the fusing of prealloy ingot after; with the inert gas is that atomization gas atomizes, and atomizing pressure is 1.5-3.0MPa, produces the soldering alloyed metal powder of high-smelting point and low-vapor pressure.
When preparation high-smelting point and low-vapor pressure solder alloyed powder, the percetage by weight meter, by alloying component, silver is 20, tin is 11～13, nickel 3.8～4.2, chromium 0.05～0.1, surplus is a copper, takes by weighing silver, part copper, tin, nickel and copper chromium intermediate alloy are prepared burden to well.Said copper chromium intermediate alloy is the CuCr13 intermediate alloy.Under the protection of inert gas atmosphere; in the 900-1050 ℃ of fusing or carry out prealloy ingot when fusing of will preparing burden in 900-1050 ℃; used inert gas is nitrogen, argon gas a kind of gas wherein, and the pressure of used nitrogen, argon gas a kind of gas wherein is 0.9～1.013 * 10
5Pa.
Under the protection of inert nitrogen gas or argon gas atmosphere, with intermediate frequency furnace 900-1050 ℃ will prepare burden melt 20-40 minute after, be cast into the prealloy ingot for well.The prealloy ingot at first is under the vacuum state of 1.33～13.3pa; charge into inert nitrogen gas, argon gas a kind of gas wherein again; with intermediate frequency furnace in 900-1050 ℃; under the protection of inert nitrogen gas, argon gas a kind of gas atmosphere wherein, carry out the fusing of prealloy ingot, the pressure of the inert nitrogen gas that charges into, argon gas a kind of gas wherein be 0.8～1.013 * 10
5Pa.Adopting the aerosolization powder-making technique, is that atomization gas atomizes with inert nitrogen gas, argon gas a kind of gas wherein, and atomizing pressure is 1.5-3.0MPa, makes the high-smelting point and low-vapor pressure solder alloyed powder, and its melting range is 800-850 ℃.
The process chart of its preparation high-smelting point and low-vapor pressure solder alloyed powder is seen Fig. 1, the gas atomization fundamental diagram is seen Fig. 2, at first the prealloy ingot is melted with intermediate frequency furnace 7, the prealloy of fusing is forwarded in the tundish 8, enter inert nitrogen gas, the argon gas a kind of gases at high pressure wherein that pipe 10 enters 1.5-3.0MPa from gases at high pressure, make the soldering alloyed metal powder 11 of the prealloy formation high-smelting point and low-vapor pressure of fusing, rapid condensation is collected in the powder catcher 12.
Advantage of the present invention just is:
1. to have oxygen content low for the soldering alloyed metal powder of high-smelting point and low-vapor pressure of the present invention, and composition is even, narrow particle size distribution, good sphericity, the characteristic that cost is low.This alloy powder can be mixed with soft pricker cream with suitable scaling powder.This soft pricker cream has good wetability to stainless steel brazing filler metal part, and has higher welding performance, can satisfy the welding procedure and the performance demands of vacuum welding rustless steel container fully.
2. owing to carried out the preparation of prealloy ingot, improve the uniformity of each alloying elements distribution, adopted the gas atomization rapid condensation to make the alloy powder composition even, grain refinement, particle diameter is tiny, has improved the brazing filler metal alloy brazing property, and the soldering rear surface is bright and clean.
Fig. 1 produces the process chart of high-smelting point and low-vapor pressure solder alloy powder
Among the figure, 1 is batching, and 2 is the preparation of prealloy ingot, and 3 for vacuumizing, and charges into the inert gas of protection, and 4 for to melt the prealloy ingot, and 5 are gas atomization, and 6 for making the high-smelting point and low-vapor pressure solder alloyed powder.
Fig. 2 gas atomization fundamental diagram
Among the figure, 7 is intermediate frequency furnace, and 8 is tundish, and 9 is the working chamber, 10 the pipes that enter for gases at high pressure nitrogen or argon, and 11 is the high-smelting point and low-vapor pressure solder alloyed powder, 12 is high-smelting point and low-vapor pressure solder alloy powder gatherer.
Fig. 3 embodiment outturn sample brazing filler metal alloy powder scanning electron microscope sem pattern photo
X-ray method (XRD) the facies analysis figure of Fig. 4 embodiment outturn sample
Outward appearance photo after Fig. 5 welds with the embodiment outturn sample
Below the present invention is further illustrated with embodiment, will help the preparation method and the advantage thereof of product of the present invention and product are done further to understand, and the present invention is not subjected to the qualification of these embodiment, and protection scope of the present invention is limited by claims.
The soldering alloyed metal powder of a kind of high-smelting point and low-vapor pressure in the present embodiment, percentage meter by weight, its alloyed powder food ingredient is Ag 20, and Cu 65, and Sn 11, and Ni 3.93, and Cr 0.07.Take by weighing silver, part copper, tin, nickel and the CuCr13 intermediate alloy batching of purity 99.9% (purity is better more than 99.9%).Under inert nitrogen gas (or argon gas) atmosphere protection in 1000 ℃ intermediate frequency furnace will prepare burden the fusing 30 minutes, the pressure of inert gas is 1.013 * 10
5Pa is cast into the prealloy ingot, and the prealloy ingot at first is under the vacuum state of 6.65pa, charges into inert nitrogen gas again, and the pressure that charges into inert nitrogen gas is 1.013 * 10
5Pa; with intermediate frequency furnace in 1000 ℃ of fusings of under the protection of inert nitrogen gas atmosphere, carrying out the prealloy ingot; the powder by atomization technology is adopted in prealloy ingot fusing back; with the inert nitrogen gas is that atomization gas atomizes; atomizing pressure is 2.0MPa, makes the soldering alloyed metal powder of high-smelting point and low-vapor pressure.The composition that makes is even, narrow particle size distribution, and good sphericity, the scanning electron microscope sem pattern photo of soldering alloyed metal powder is seen Fig. 3, X ray facies analysis figure sees Fig. 4.The soldering alloyed metal powder of choosing size 30-65 μ m is mixed with soft pricker cream with the scaling powder that suits.Because each constituent element is the low volatility element, show the brazing filler metal alloy vapour pressure P of present embodiment in 800 ℃ industrialness air-tightness experiments
800 ℃≤ 10
-8Pa has extremely low vapour pressure under the vacuum brazing technique condition.
Soft pricker cream is squeezed on weldment on request with distributor, in the soldering electric furnace of two Room (cooling chamber, welding booth), weld: send into cooling chamber after the rustless steel container that will scribble soft pricker cream assembles on request; After being evacuated to 1.33pa, weldment is sent into the welding booth; Be evacuated to 1.33 * 10
-2Be warming up to 900-950 ℃ behind the pa and weld, be incubated stop after 2 minutes the heating; When treating slow cooling to 600 ℃, open intermediate valve and send weldment back to cooling chamber; Inflated with nitrogen is cooled to below 200 ℃ and can comes out of the stove.
High-smelting point and low-vapor pressure solder alloy powder and the brazing member that makes carried out performance test, and its result is Ag 20 for the brazing filler metal alloy meal component, and Cu 65, and Sn 11, and Ni 3.93, Cr 0.07 (percentage meter by weight).This soldering alloyed metal powder interface wet ability is good.The bond strength height, tensile strength reaches 220MPa, soldering and sealing smooth surface, bright and clean.The kettle top cover of vacuum seal is shown among Fig. 5.
Claims (10)
1. the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a Kromarc container is characterized in that, percentage meter by weight, and its alloying component is a silver 19～21, tin 10～15, nickel 3.5～4.5, chromium 0.05～0.5, surplus is a copper.
2. according to the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 1, it is characterized in that percentage meter by weight, silver 20, tin 11～13, nickel 3.8～4.2, chromium 0.05～0.1.
3. the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a Kromarc container is characterized in that,
1) by alloying component, the percetage by weight meter, silver 19～21, tin 10～15, nickel 3.5～4.5, chromium 0.05～0.5, surplus is a copper, takes by weighing silver, part copper, tin, nickel and copper chromium intermediate alloy batching,
2) under inert gas atmosphere protection in the 900-1050 ℃ of fusing of will preparing burden, be cast into the prealloy ingot,
3) under inert gas atmosphere protection in 900-1050 ℃ with the fusing of prealloy ingot after, be that atomization gas atomizes with the inert gas, atomizing pressure is 1.5-3.0MPa, produces the soldering alloyed metal powder of high-smelting point and low-vapor pressure.
4. according to the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 3, it is characterized in that, percentage meter by weight, silver is 20, tin is 11～13, nickel 3.8～4.2, chromium 0.05～0.1.
5. according to the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 3, it is characterized in that said copper chromium intermediate alloy is the CuCr13 intermediate alloy.
6. according to the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 3; it is characterized in that; under the protection of inert gas atmosphere; in the 900-1050 ℃ of fusing or carry out prealloy ingot when fusing in 900-1050 ℃ of will preparing burden, used inert gas is nitrogen, argon gas a kind of gas wherein.
7. according to the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 6, it is characterized in that the pressure of nitrogen, argon gas a kind of gas wherein is 0.9～1.013 * 10
5Pa.
8. according to the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 3, it is characterized in that, under the protection of inert nitrogen gas or argon gas atmosphere 900-1050 ℃ of fusing 20-40 minute of will preparing burden.
9. according to the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 3; it is characterized in that; the prealloy ingot is under the vacuum state of 1.33～13.3pa; charge into inert nitrogen gas, argon gas a kind of gas wherein again; in 900-1050 ℃; under the protection of inert nitrogen gas, argon gas a kind of atmosphere wherein, carry out the fusing of prealloy ingot, the pressure of the inert nitrogen gas that charges into, argon gas a kind of gas wherein be 0.8～1.013 * 10
5Pa.
10. according to the preparation method of the soldering alloyed metal powder of the high-smelting point and low-vapor pressure of a kind of Kromarc container of claim 3, it is characterized in that, is that atomization gas atomizes with inert gas nitrogen, argon a kind of gas wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97121787A CN1055883C (en) | 1997-12-22 | 1997-12-22 | High-smelting point and low-vapor pressure solder alloy powder for soldering stain-less steel container and its preparation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97121787A CN1055883C (en) | 1997-12-22 | 1997-12-22 | High-smelting point and low-vapor pressure solder alloy powder for soldering stain-less steel container and its preparation |
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| Publication Number | Publication Date |
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| CN1191789A CN1191789A (en) | 1998-09-02 |
| CN1055883C true CN1055883C (en) | 2000-08-30 |
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| CN97121787A Expired - Lifetime CN1055883C (en) | 1997-12-22 | 1997-12-22 | High-smelting point and low-vapor pressure solder alloy powder for soldering stain-less steel container and its preparation |
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| JP6106154B2 (en) * | 2014-12-26 | 2017-03-29 | 千住金属工業株式会社 | Method for manufacturing solder material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039986A (en) * | 1989-04-08 | 1990-02-28 | 浙江大学材料制造厂 | A kind of copper-based polybasic alloy soldering materials |
| CN1029207C (en) * | 1991-03-14 | 1995-07-05 | 中国有色金属工业总公司昆明贵金属研究所 | Copper basis soldering paste and brazing method for copper ornaments |
| CN1049624C (en) * | 1995-04-28 | 2000-02-23 | 海德堡印刷机械股份公司 | Adjusting device for blanket cylinder |
-
1997
- 1997-12-22 CN CN97121787A patent/CN1055883C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039986A (en) * | 1989-04-08 | 1990-02-28 | 浙江大学材料制造厂 | A kind of copper-based polybasic alloy soldering materials |
| CN1029207C (en) * | 1991-03-14 | 1995-07-05 | 中国有色金属工业总公司昆明贵金属研究所 | Copper basis soldering paste and brazing method for copper ornaments |
| CN1049624C (en) * | 1995-04-28 | 2000-02-23 | 海德堡印刷机械股份公司 | Adjusting device for blanket cylinder |
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| CN1191789A (en) | 1998-09-02 |
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Owner name: BEIJING COMPO ADVANCED TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING CENTRAL INST.OF THE NONFERROUS METAL Effective date: 20140430 |
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