JPH0370257U - - Google Patents

Info

Publication number
JPH0370257U
JPH0370257U JP13058289U JP13058289U JPH0370257U JP H0370257 U JPH0370257 U JP H0370257U JP 13058289 U JP13058289 U JP 13058289U JP 13058289 U JP13058289 U JP 13058289U JP H0370257 U JPH0370257 U JP H0370257U
Authority
JP
Japan
Prior art keywords
blade
drill
opening
hemispherical
bit
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
JP13058289U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0634359Y2 (ja
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 filed Critical
Priority to JP1989130582U priority Critical patent/JPH0634359Y2/ja
Publication of JPH0370257U publication Critical patent/JPH0370257U/ja
Application granted granted Critical
Publication of JPH0634359Y2 publication Critical patent/JPH0634359Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Blast Furnaces (AREA)
JP1989130582U 1989-11-10 1989-11-10 高炉出銑口の開孔用錐 Expired - Lifetime JPH0634359Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989130582U JPH0634359Y2 (ja) 1989-11-10 1989-11-10 高炉出銑口の開孔用錐

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989130582U JPH0634359Y2 (ja) 1989-11-10 1989-11-10 高炉出銑口の開孔用錐

Publications (2)

Publication Number Publication Date
JPH0370257U true JPH0370257U (cs) 1991-07-15
JPH0634359Y2 JPH0634359Y2 (ja) 1994-09-07

Family

ID=31678149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989130582U Expired - Lifetime JPH0634359Y2 (ja) 1989-11-10 1989-11-10 高炉出銑口の開孔用錐

Country Status (1)

Country Link
JP (1) JPH0634359Y2 (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007046078A (ja) * 2005-08-08 2007-02-22 Nippon Steel Corp 熱間穿孔用ビットおよびこれを用いた転炉の出湯孔スリーブ穿孔方法
JP2007119868A (ja) * 2005-10-28 2007-05-17 Nakazono Kogyosho:Kk 出湯口開孔用ドリル
WO2020189393A1 (ja) * 2019-03-19 2020-09-24 Ｊｆｅスチール株式会社 開孔ビットおよびそれを用いた出銑口の開孔方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151407A (ja) * 1982-03-03 1983-09-08 Kawasaki Steel Corp 高炉出銑口座ぐり用ビツト
JPS58157907A (ja) * 1982-03-11 1983-09-20 Mitsubishi Metal Corp 出銑用ビツト

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151407A (ja) * 1982-03-03 1983-09-08 Kawasaki Steel Corp 高炉出銑口座ぐり用ビツト
JPS58157907A (ja) * 1982-03-11 1983-09-20 Mitsubishi Metal Corp 出銑用ビツト

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007046078A (ja) * 2005-08-08 2007-02-22 Nippon Steel Corp 熱間穿孔用ビットおよびこれを用いた転炉の出湯孔スリーブ穿孔方法
JP2007119868A (ja) * 2005-10-28 2007-05-17 Nakazono Kogyosho:Kk 出湯口開孔用ドリル
WO2020189393A1 (ja) * 2019-03-19 2020-09-24 Ｊｆｅスチール株式会社 開孔ビットおよびそれを用いた出銑口の開孔方法
JPWO2020189393A1 (ja) * 2019-03-19 2021-04-01 Ｊｆｅスチール株式会社 開孔ビットおよびそれを用いた出銑口の開孔方法
CN113490754A (zh) * 2019-03-19 2021-10-08 杰富意钢铁株式会社 开孔钻头以及使用其的出铁口的开孔方法
US11821048B2 (en) 2019-03-19 2023-11-21 Jfe Steel Corporation Hole-opening bit and tap hole opening method using same

Also Published As

Publication number Publication date
JPH0634359Y2 (ja) 1994-09-07

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term