CN110449681A - A kind of platinoiridita noble metal and mild steel vacuum brazing method - Google Patents
A kind of platinoiridita noble metal and mild steel vacuum brazing method Download PDFInfo
- Publication number
- CN110449681A CN110449681A CN201910618907.7A CN201910618907A CN110449681A CN 110449681 A CN110449681 A CN 110449681A CN 201910618907 A CN201910618907 A CN 201910618907A CN 110449681 A CN110449681 A CN 110449681A
- Authority
- CN
- China
- Prior art keywords
- vacuum brazing
- platinoiridita
- mild steel
- noble metal
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/203—Fluxing, i.e. applying flux onto surfaces
Abstract
The invention belongs to Vacuum Soldering Technology field, it is related to a kind of platinoiridita noble metal and mild steel vacuum brazing method.Equipment used in the present invention is vacuum brazing furnace, and the welding method of use is vacuum brazing.Base metals and solder complete welding process under high vacuum environment, have prevented nitrogen under high temperature while not only ensure that the cleannes and safety of weld seam and have incorporated the phenomenon that molten pool metal causes joint microstructure to harden.Furthermore entire welding process is controlled by automated procedures completely, has good production efficiency and security reliability；The present invention is lower than 6.0 × 10‑3It is welded under the vacuum environment of Pa.The method is safe and clean, efficiently and ensure that welding quality.Welding finished product achievable per minute more than 24840 times uninterrupted sparking tests.
Description
Technical field
The invention belongs to Vacuum Soldering Technology field, it is related to a kind of platinoiridita noble metal and mild steel vacuum brazing method.
Background technique
The welding of platinumiridio and mild steel, existing welding method use box type heater and ammonia dore furnace, pass through ammonia
Nitrogen after gas decomposes carries out protection welding.The method operating process is many and diverse, and the nitrogen that ammonia decomposites is in protection welding process
In easily cause welding point to harden, while ammonia decompose there are security risks.
Summary of the invention
The purpose of the present invention
Using the method for vacuum brazing, it is being lower than 6.0 × 10-3It is welded under the vacuum environment of Pa.The method is safe, clear
It is clean, efficiently and ensure that welding quality.Welding finished product achievable per minute more than 24840 times uninterrupted sparking tests.
Technical solution of the present invention
A kind of platinoiridita noble metal and mild steel vacuum brazing method, it is characterised in that: the following steps are included:
Platinoiridita metal and mild steel component assembly in tooling and are placed solder by the first step；
Second step, by the placing part assembled in vacuum brazing furnace, close fire door；
Third step makes welding temperature in vacuum brazing furnace furnace reach 1140 ± 10 DEG C, subsequent Temperature fall；
4th step vacuumizes burner hearth；
5th step is down to 150 DEG C or less to fire box temperature and takes out part.
Vacuum brazing furnace temperature-rise period full curve in gradient.
The gradient full curve is that 700 DEG C are risen to from 0-2.0h, and 2.0-2.5h rises to 700 DEG C of heat preservations, 2.5-3.5h liter
To 1140 DEG C, 8-12min is kept the temperature, wherein h is hour.
Described vacuumize is to open roughing valve, starts mechanical pump, starts sieve when vacuum degree reaches 1.0-3.0 × 10-1Pa
Thatch pump opens main valve when vacuum degree reaches 6.0-7.0 × 10-2Pa and opens diffusion pump, reaches 1.0-1.5 × 10- to vacuum degree
Start heating when 3Pa, starts to heat burner hearth at this time.
Described is to start lobe pump when vacuum degree reaches 2.0 × 10-1Pa to burner hearth heating, vacuum degree reaches 6.5 ×
Main valve is opened when 10-2Pa and starts diffusion pump, starting heating when vacuum degree reaches 1.25 × 10-3Pa.
The solder is fine copper solder T-3.
The part assembled will steadily be put in vacuum brazing furnace.
The placing part assembled is in vacuum brazing furnace temperature uniformity effective district.
Beneficial effects of the present invention
Equipment used in the present invention is vacuum brazing furnace, and the welding method of use is vacuum brazing.Base metals and pricker
Material completes welding process under high vacuum environment, has prevented under high temperature while not only ensure that the cleannes and safety of weld seam
Nitrogen incorporates the phenomenon that molten pool metal causes joint microstructure to harden.Furthermore entire welding process is controlled by automated procedures completely,
With good production efficiency and security reliability.
Specific embodiment
Technical solution of the present invention is further illustrated below
A kind of platinoiridita noble metal and mild steel vacuum brazing method,
Platinoiridita metal and mild steel component assembly in tooling and are placed solder by the first step；
The part assembled is steadily placed in the temperature uniformity effective district of vacuum brazing furnace by second step, closes furnace
Door；
Third step sets technological parameter, temperature-rise period full curve in gradient；Reach 1140 ± 10 DEG C of welding temperature, with
Temperature fall afterwards；The gradient full curve is that 700 DEG C are risen to from 0-2.0h, and 2.0-2.5h700 DEG C of heat preservation, 2.5-3.5h rises to
1140 DEG C, keep the temperature 8-12min.
4th step, vacuumizes burner hearth；When vacuum degree reaches 2.0 × 10-1Start lobe pump when Pa, vacuum degree reaches
6.5×10-2Main valve is opened when Pa and opens diffusion pump, and vacuum degree reaches 1.25 × 10-3Starting heats burner hearth best when Pa.
5th step, equipment are executed according to the heating schedule set in step 3, and being down to 150 DEG C or less to fire box temperature will
Part takes out.
Solder selects fine copper solder T-3 solder.
Claims (8)
1. a kind of platinoiridita noble metal and mild steel vacuum brazing method, it is characterised in that: the following steps are included:
Platinoiridita metal and mild steel component assembly in tooling and are placed solder by the first step；
Second step, by the placing part assembled in vacuum brazing furnace, close fire door；
Third step makes welding temperature in vacuum brazing furnace furnace reach 1140 ± 10 DEG C, subsequent Temperature fall；
4th step vacuumizes burner hearth；
5th step is down to 150 DEG C or less to fire box temperature and takes out part.
2. platinoiridita noble metal as described in claim 1 and mild steel vacuum brazing method, it is characterised in that: the vacuum brazing
Furnace temperature-rise period full curve in gradient.
3. platinoiridita noble metal as claimed in claim 2 and mild steel vacuum brazing method, it is characterised in that: the gradient is continuous
Curve is that 700 DEG C are risen to from 0-2.0h, and 2.0-2.5h rises to 700 DEG C of heat preservations, and 2.5-3.5h rises to 1140 DEG C, keeps the temperature 8-12min,
Wherein h is hour.
4. platinoiridita noble metal and mild steel vacuum brazing method as described in claims 1 to 3 any one, it is characterised in that:
Described vacuumize is to open roughing valve, starts mechanical pump, starts lobe pump when vacuum degree reaches 1.0-3.0 × 10-1Pa, to
Main valve is opened when vacuum degree reaches 6.0-7.0 × 10-2Pa and opens diffusion pump, is opened when vacuum degree reaches 1.0-1.5 × 10-3Pa
Dynamic heating starts to heat burner hearth at this time.
5. platinoiridita noble metal as claimed in claim 4 and mild steel vacuum brazing method, it is characterised in that: described to add to burner hearth
Heat is to start lobe pump when vacuum degree reaches 2.0 × 10-1Pa, and main valve is opened when vacuum degree reaches 6.5 × 10-2Pa and is started
Diffusion pump, starting heating when vacuum degree reaches 1.25 × 10-3Pa.
6. platinoiridita noble metal and mild steel vacuum brazing method as described in claims 1 or 2 or 3, it is characterised in that: the pricker
Material is fine copper solder T-3.
7. platinoiridita noble metal and mild steel vacuum brazing method as described in claims 1 or 2 or 3, it is characterised in that: the dress
The part prepared will steadily be put in vacuum brazing furnace.
8. platinoiridita noble metal and mild steel vacuum brazing method as described in claims 1 or 2 or 3, it is characterised in that: the dress
The placing part prepared is in vacuum brazing furnace temperature uniformity effective district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618907.7A CN110449681A (en) | 2019-07-09 | 2019-07-09 | A kind of platinoiridita noble metal and mild steel vacuum brazing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618907.7A CN110449681A (en) | 2019-07-09 | 2019-07-09 | A kind of platinoiridita noble metal and mild steel vacuum brazing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110449681A true CN110449681A (en) | 2019-11-15 |
Family
ID=68482555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910618907.7A Pending CN110449681A (en) | 2019-07-09 | 2019-07-09 | A kind of platinoiridita noble metal and mild steel vacuum brazing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110449681A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391329A (en) * | 2008-11-05 | 2009-03-25 | 南京工业大学 | Vacuum brazing technique of stainless steel plate fin structure |
| CN102554509A (en) * | 2012-02-24 | 2012-07-11 | 山东大学 | Vacuum brazing solder and process of Mo-Cu alloy and stainless steel |
| CN103056468A (en) * | 2013-01-04 | 2013-04-24 | 昆山众备机械设备有限公司 | Method for brazing in vacuum state |
| CN103264204A (en) * | 2013-05-30 | 2013-08-28 | 中国科学院理化技术研究所 | Vacuum-pumping system |
| EP2756914A1 (en) * | 2013-01-18 | 2014-07-23 | Umicore AG & Co. KG | Solder alloy |
| CN104148759A (en) * | 2014-08-07 | 2014-11-19 | 托伦斯精密机械（上海）有限公司 | Vacuum brazing method |
| CN206882952U (en) * | 2017-06-28 | 2018-01-16 | 南京威途真空技术有限公司 | Stainless steel high temperature vacuum brazing furnace extract system |
-
2019
- 2019-07-09 CN CN201910618907.7A patent/CN110449681A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391329A (en) * | 2008-11-05 | 2009-03-25 | 南京工业大学 | Vacuum brazing technique of stainless steel plate fin structure |
| CN102554509A (en) * | 2012-02-24 | 2012-07-11 | 山东大学 | Vacuum brazing solder and process of Mo-Cu alloy and stainless steel |
| CN103056468A (en) * | 2013-01-04 | 2013-04-24 | 昆山众备机械设备有限公司 | Method for brazing in vacuum state |
| EP2756914A1 (en) * | 2013-01-18 | 2014-07-23 | Umicore AG & Co. KG | Solder alloy |
| CN103264204A (en) * | 2013-05-30 | 2013-08-28 | 中国科学院理化技术研究所 | Vacuum-pumping system |
| CN104148759A (en) * | 2014-08-07 | 2014-11-19 | 托伦斯精密机械（上海）有限公司 | Vacuum brazing method |
| CN206882952U (en) * | 2017-06-28 | 2018-01-16 | 南京威途真空技术有限公司 | Stainless steel high temperature vacuum brazing furnace extract system |
Non-Patent Citations (2)
| Title |
|---|
| 吕友礼: "钨触头真空钎焊", 《机械工人技术资料》 * |
| 李正仁: "铂铱接点的钎焊", 《焊接通讯》 * |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191115 |
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| RJ01 | Rejection of invention patent application after publication |