JPS5750271A - Brazing method - Google Patents

Brazing method

Info

Publication number
JPS5750271A
JPS5750271A JP12469580A JP12469580A JPS5750271A JP S5750271 A JPS5750271 A JP S5750271A JP 12469580 A JP12469580 A JP 12469580A JP 12469580 A JP12469580 A JP 12469580A JP S5750271 A JPS5750271 A JP S5750271A
Authority
JP
Japan
Prior art keywords
vacuum
pressure
brazing
furnace
maintained
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
Application number
JP12469580A
Other languages
Japanese (ja)
Inventor
Takashi Shige
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP12469580A priority Critical patent/JPS5750271A/en
Publication of JPS5750271A publication Critical patent/JPS5750271A/en
Pending legal-status Critical Current

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  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

PURPOSE: To decrease the defects produced in a brazed part and to obtain the sound brazed part by controlling the pressure of a brazing atmosphere.
CONSTITUTION: While the degree of vacuum in a furnace 11 is measured with a vacuum gage 12, the displacement of a vacuum pump 13 and the gas introduction amt. of a gas introducing valve 14 are regulated to regulate the pressure in the furnace 11. The inside of the furnace is heated up to a brazing material molting temp. in a low pressure (high degree of vacuum) atmosphere, and the heating is maintained for a certain time (until the brazing filler metal melts and runs to the joint). Thence, while the temp. is held maintained high, the heating is maintained for a certain time (until pores shrink) under the atmospheric pressure relatively higher (low degree of vacuum) than the above-mentioned pressure. According to this method, the volume of the pores produced in the brazing part decreases considerably in inverse proportion to the atmospheric pressure.
COPYRIGHT: (C)1982,JPO&Japio
JP12469580A 1980-09-10 1980-09-10 Brazing method Pending JPS5750271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12469580A JPS5750271A (en) 1980-09-10 1980-09-10 Brazing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12469580A JPS5750271A (en) 1980-09-10 1980-09-10 Brazing method

Publications (1)

Publication Number Publication Date
JPS5750271A true JPS5750271A (en) 1982-03-24

Family

ID=14891799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12469580A Pending JPS5750271A (en) 1980-09-10 1980-09-10 Brazing method

Country Status (1)

Country Link
JP (1) JPS5750271A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4997124A (en) * 1988-04-20 1991-03-05 Zojirushi Corporation Vacuum-insulated, double-walled metal structure and method for its production

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5351159A (en) * 1976-10-22 1978-05-10 Hitachi Ltd Method of producing composite brazing filler
JPS53125252A (en) * 1977-04-09 1978-11-01 Mitsubishi Aluminium Brazing method of aluminium
JPS5471749A (en) * 1977-11-21 1979-06-08 Mitsubishi Aluminium Soldering of easily evaporative element containing aluminium alloy without using flux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5351159A (en) * 1976-10-22 1978-05-10 Hitachi Ltd Method of producing composite brazing filler
JPS53125252A (en) * 1977-04-09 1978-11-01 Mitsubishi Aluminium Brazing method of aluminium
JPS5471749A (en) * 1977-11-21 1979-06-08 Mitsubishi Aluminium Soldering of easily evaporative element containing aluminium alloy without using flux

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4997124A (en) * 1988-04-20 1991-03-05 Zojirushi Corporation Vacuum-insulated, double-walled metal structure and method for its production

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