JPS59173478A - 掘削用ビツト及びその製造方法 - Google Patents

掘削用ビツト及びその製造方法

Info

Publication number
JPS59173478A
JPS59173478A JP4684383A JP4684383A JPS59173478A JP S59173478 A JPS59173478 A JP S59173478A JP 4684383 A JP4684383 A JP 4684383A JP 4684383 A JP4684383 A JP 4684383A JP S59173478 A JPS59173478 A JP S59173478A
Authority
JP
Japan
Prior art keywords
mold
alloy
bit
powder
hard
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.)
Granted
Application number
JP4684383A
Other languages
English (en)
Japanese (ja)
Other versions
JPS635548B2 (enrdf_load_stackoverflow
Inventor
佐藤　壽彦
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.)
Tone Boring Co Ltd
TONE BORING KK
Original Assignee
Tone Boring Co Ltd
TONE BORING 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 Tone Boring Co Ltd, TONE BORING KK filed Critical Tone Boring Co Ltd
Priority to JP4684383A priority Critical patent/JPS59173478A/ja
Publication of JPS59173478A publication Critical patent/JPS59173478A/ja
Publication of JPS635548B2 publication Critical patent/JPS635548B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP4684383A 1983-03-18 1983-03-18 掘削用ビツト及びその製造方法 Granted JPS59173478A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4684383A JPS59173478A (ja) 1983-03-18 1983-03-18 掘削用ビツト及びその製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4684383A JPS59173478A (ja) 1983-03-18 1983-03-18 掘削用ビツト及びその製造方法

Publications (2)

Publication Number Publication Date
JPS59173478A true JPS59173478A (ja) 1984-10-01
JPS635548B2 JPS635548B2 (enrdf_load_stackoverflow) 1988-02-04

Family

ID=12758619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4684383A Granted JPS59173478A (ja) 1983-03-18 1983-03-18 掘削用ビツト及びその製造方法

Country Status (1)

Country Link
JP (1) JPS59173478A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61169191U (enrdf_load_stackoverflow) * 1985-12-21 1986-10-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61169191U (enrdf_load_stackoverflow) * 1985-12-21 1986-10-20

Also Published As

Publication number Publication date
JPS635548B2 (enrdf_load_stackoverflow) 1988-02-04

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