JPS574342A - Airtight piercing and forging method - Google Patents

Airtight piercing and forging method

Info

Publication number
JPS574342A
JPS574342A JP7682880A JP7682880A JPS574342A JP S574342 A JPS574342 A JP S574342A JP 7682880 A JP7682880 A JP 7682880A JP 7682880 A JP7682880 A JP 7682880A JP S574342 A JPS574342 A JP S574342A
Authority
JP
Japan
Prior art keywords
punch
piercing
airtight
hole
deburring
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
JP7682880A
Other languages
English (en)
Inventor
Tsugio Fujii
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.)
BIZEN TANKOUSHIYO KK
Original Assignee
BIZEN TANKOUSHIYO KK
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 BIZEN TANKOUSHIYO KK filed Critical BIZEN TANKOUSHIYO KK
Priority to JP7682880A priority Critical patent/JPS574342A/ja
Publication of JPS574342A publication Critical patent/JPS574342A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Forging (AREA)
JP7682880A 1980-06-06 1980-06-06 Airtight piercing and forging method Pending JPS574342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7682880A JPS574342A (en) 1980-06-06 1980-06-06 Airtight piercing and forging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7682880A JPS574342A (en) 1980-06-06 1980-06-06 Airtight piercing and forging method

Publications (1)

Publication Number Publication Date
JPS574342A true JPS574342A (en) 1982-01-09

Family

ID=13616534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7682880A Pending JPS574342A (en) 1980-06-06 1980-06-06 Airtight piercing and forging method

Country Status (1)

Country Link
JP (1) JPS574342A (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233592A (en) * 1975-09-10 1977-03-14 Hitachi Ltd Ion concentration measuring apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233592A (en) * 1975-09-10 1977-03-14 Hitachi Ltd Ion concentration measuring apparatus

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