WO2003025486A3 - Furnace taphole drill - Google Patents

Furnace taphole drill Download PDF

Info

Publication number
WO2003025486A3
WO2003025486A3 PCT/ZA2002/000140 ZA0200140W WO03025486A3 WO 2003025486 A3 WO2003025486 A3 WO 2003025486A3 ZA 0200140 W ZA0200140 W ZA 0200140W WO 03025486 A3 WO03025486 A3 WO 03025486A3
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
formations
drill bit
cutting
fitted
Prior art date
Application number
PCT/ZA2002/000140
Other languages
French (fr)
Other versions
WO2003025486A2 (en
Inventor
Jakobus Lewis
Original Assignee
Jakobus Lewis
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 Jakobus Lewis filed Critical Jakobus Lewis
Publication of WO2003025486A2 publication Critical patent/WO2003025486A2/en
Priority to ZA200304626A priority Critical patent/ZA200304626B/en
Publication of WO2003025486A3 publication Critical patent/WO2003025486A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B28D1/146—Tools therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/02—Connections between shanks and removable cutting heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/20—Number of cutting edges
    • B23B2251/204—Four cutting edges
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Drilling equipment for furnace refractory lining piercing for draining molten metal comprises a furnace taphole drill bit (10) fitted to a mounting shaft (40). The drill bit (10) has four symmetrically arranged cutting formation (14). The trailing end extends in the form of a stub (16) forming part of its shaft securing means. The planes (18) of the cutting faces (20) of the formations (14) pass through the central axis (22) of the drill bit (10). Each cutting face (20) is laterally and forwardly bordered by a cutting edge (26). The outer edges (28) of the formations (14) extend in the form of strips causing the original cross sectional area of the various cutting faces (20) to be retained for some distance into the bodies of the formations (14) despite wear. The shaft (40) is hollow for the passage of cooling fluid there along. The shaft (40) is fitted with a non-return valve (45). This limits the penetration of molten metal and slag down the shaft (40) once used.
PCT/ZA2002/000140 2001-09-14 2002-09-13 Furnace taphole drill WO2003025486A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA200304626A ZA200304626B (en) 2001-09-14 2003-06-13 Furnace taphole drill.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200107567 2001-09-14
ZA2001/7567 2001-09-14

Publications (2)

Publication Number Publication Date
WO2003025486A2 WO2003025486A2 (en) 2003-03-27
WO2003025486A3 true WO2003025486A3 (en) 2003-10-16

Family

ID=25589317

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2002/000140 WO2003025486A2 (en) 2001-09-14 2002-09-13 Furnace taphole drill

Country Status (2)

Country Link
WO (1) WO2003025486A2 (en)
ZA (1) ZA200304626B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE66580C (en) * TH. höfer in Hamburg, Jacobikirchhof 31 Drill with three cutting edges
DE7031895U (en) * 1970-08-26 1970-12-17 Thyssen Huette Ag DRILLING MACHINE FOR A TOTE DRILLING MACHINE.
US3706504A (en) * 1970-07-29 1972-12-19 Louis Simonffy Spiral drill having unequal cutting faces
DE7610485U1 (en) * 1976-04-03 1976-07-29 Wengeler & Kalthoff, 4320 Hattingen DRILLING TOOL FOR ROTARY IMPACT DRILLING
US4225275A (en) * 1978-03-10 1980-09-30 Elliott William L Drill bit
US4273202A (en) * 1979-02-05 1981-06-16 Woodings Industrial Corporation Drilling bit for blast furnace tap holes
EP0118806A1 (en) * 1983-02-23 1984-09-19 Helmut Faustka Drilling tool with replaceable cutting bit
US5184689A (en) * 1991-03-06 1993-02-09 Kennametal Inc. Radial cut drill bit insert
US5725337A (en) * 1995-06-16 1998-03-10 Cochran; Donald Paul Self centering spade drill
WO2001061142A1 (en) * 2000-02-15 2001-08-23 Kennametal Inc. Drill bit, hard member, and bit body

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE66580C (en) * TH. höfer in Hamburg, Jacobikirchhof 31 Drill with three cutting edges
US3706504A (en) * 1970-07-29 1972-12-19 Louis Simonffy Spiral drill having unequal cutting faces
DE7031895U (en) * 1970-08-26 1970-12-17 Thyssen Huette Ag DRILLING MACHINE FOR A TOTE DRILLING MACHINE.
DE7610485U1 (en) * 1976-04-03 1976-07-29 Wengeler & Kalthoff, 4320 Hattingen DRILLING TOOL FOR ROTARY IMPACT DRILLING
US4225275A (en) * 1978-03-10 1980-09-30 Elliott William L Drill bit
US4273202A (en) * 1979-02-05 1981-06-16 Woodings Industrial Corporation Drilling bit for blast furnace tap holes
EP0118806A1 (en) * 1983-02-23 1984-09-19 Helmut Faustka Drilling tool with replaceable cutting bit
US5184689A (en) * 1991-03-06 1993-02-09 Kennametal Inc. Radial cut drill bit insert
US5725337A (en) * 1995-06-16 1998-03-10 Cochran; Donald Paul Self centering spade drill
WO2001061142A1 (en) * 2000-02-15 2001-08-23 Kennametal Inc. Drill bit, hard member, and bit body

Also Published As

Publication number Publication date
ZA200304626B (en) 2004-07-21
WO2003025486A2 (en) 2003-03-27

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