GB2148353A - Mining picks - Google Patents
Mining picks Download PDFInfo
- Publication number
- GB2148353A GB2148353A GB08422564A GB8422564A GB2148353A GB 2148353 A GB2148353 A GB 2148353A GB 08422564 A GB08422564 A GB 08422564A GB 8422564 A GB8422564 A GB 8422564A GB 2148353 A GB2148353 A GB 2148353A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pick
- tip
- compact
- mining
- tungsten carbide
- 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
Links
- 238000005065 mining Methods 0.000 title claims abstract description 16
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 13
- 239000010432 diamond Substances 0.000 claims abstract description 13
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 229910001347 Stellite Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000005219 brazing Methods 0.000 claims description 2
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
- E21C35/1835—Chemical composition or specific material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
A mining pick has a steel body 10 and a cylindrical diamond compact 13 as a cutting tip. The compact 13 is embedded lengthwise in a recess in a backing 12 made of cemented tungsten carbide. <IMAGE>
Description
SPECIFICATION
Mining picks
Background to the invention
This invention relates to mining picks of the kind used in mining machines for coal and other minerals and in machines for road planing.
In general a pick of the kind in question has an elongated body with a tip which performs the cutting action.
It has already been proposed to form the cutting section of the tip from a diamond compact - see
SA patent No. 80/5766. In this prior proposal the cutting pick is formed in three parts secured together: the tip, a hard alloy such as stellite backing the tip and the main body of the tip made of steel.
Tips of cemented tungsten carbide embedded in steel bodies have also been disclosed - see US patent No. 3,650,565.
It is an object of the invention to improve on the use of diamond compacts in mining picks.
Summary of the invention
According to the invention a mining pick having an elongated steel body with a diamond compact as a cutting tip, the tip being backed by a material harder than the body has the improvement that the backing material is cemented hard metal, preferably tungsten carbide, and that the compact is embedded longwise in a recess in the hard metal.
Description of the drawings
Figure 1 is a pick bit according to the invention, and
Figure 2 is a view of another kind of bit according to the invention.
Description of embodiments
Figure 1 shows a bit of the kind illustrated, e.g.
in US patent specification No. 4 084 856 modified by the teachings of the present invention. The bit has a body 10 to which is brazed along a line 11 to a cemented tungsten carbide portion 12. The forward end of the portion 12 is formed with a cylindrical blind hole in which is accommodated, by brazing or infiltration, a cylindrical diamond compact 13.
Figure 2 shows a pick of the kind illustrated in
British patent specification No. 1170 979 and comprises a body 20 to which is secured a tungsten carbide section 21 and which section carries a cylindrical diamond compact 23.
In practice the portion 12 and the section 21 wear in step with the compact 13 or 23.
1. A mining pick having an elongated steel body with a diamond compact as a cutting tip, the tip being backed by a material harder than the body with the improvement that the backing material is a cemented hard metal, and that the compact is embedded longwise in a recess in the hard metal.
2. The pick claimed in claim 1 in which the hard metal is cemented tungsten carbide.
3. The pick claimed in either one of claims 1 or 2 in which the compact is cylindrical.
4. A mining pick substantially as herein described with reference to Figures 1 or 2.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. A mining pick having an elongated steel body with a diamond compact as a cutting tip, the tip being backed by a material harder than the body with the improvement that the backing material is a cemented hard metal, and that the compact is embedded longwise in a recess in the hard metal.
2. The pick claimed in claim 1 in which the hard metal is cemented tungsten carbide.
3. The pick claimed in either one of claims 1 or 2 in which the compact is cylindrical.
4. A mining pick substantially as herein described with reference to Figures 1 or 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA836855 | 1983-09-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8422564D0 GB8422564D0 (en) | 1984-10-10 |
GB2148353A true GB2148353A (en) | 1985-05-30 |
GB2148353B GB2148353B (en) | 1986-03-05 |
Family
ID=25576912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08422564A Expired GB2148353B (en) | 1983-09-15 | 1984-09-06 | Mining picks |
Country Status (7)
Country | Link |
---|---|
AU (1) | AU3290184A (en) |
BE (1) | BE900582A (en) |
DE (1) | DE3432995A1 (en) |
FR (1) | FR2553146A1 (en) |
GB (1) | GB2148353B (en) |
IT (1) | IT1196248B (en) |
SE (1) | SE8404494L (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA846759B (en) * | 1983-09-05 | 1985-02-27 | ||
US4694918A (en) * | 1985-04-29 | 1987-09-22 | Smith International, Inc. | Rock bit with diamond tip inserts |
AU577958B2 (en) * | 1985-08-22 | 1988-10-06 | De Beers Industrial Diamond Division (Proprietary) Limited | Abrasive compact |
US4764255A (en) * | 1987-03-13 | 1988-08-16 | Sandvik Ab | Cemented carbide tool |
AT508232B1 (en) * | 2009-05-14 | 2011-05-15 | Sandvik Mining & Constr Oy | CUTTING TOOL FOR A MINING MACHINE |
CN104712336A (en) * | 2015-03-26 | 2015-06-17 | 河南四方达超硬材料股份有限公司 | Composite cutting tooth made of polycrystalline diamond and hard alloy |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB156521A (en) * | 1914-10-09 | 1922-04-05 | Signal Gmbh | Transmitting arrangement for submarine sound signals |
GB1114156A (en) * | 1964-09-01 | 1968-05-15 | Coal Industry Patents Ltd | Improvements in or relating to cutter picks |
GB1596610A (en) * | 1977-04-30 | 1981-08-26 | Christensen Inc | Drilling tools |
GB2096669A (en) * | 1981-04-11 | 1982-10-20 | Christensen Inc | Cutting member for rotary drill bits |
GB2108554A (en) * | 1981-10-29 | 1983-05-18 | Smith International | Improvements in drag bits |
GB2115460A (en) * | 1982-02-20 | 1983-09-07 | Unicorn Ind Plc | Rotary drilling bits |
GB2136035A (en) * | 1983-02-22 | 1984-09-12 | Nl Industries Inc | Improved pcd cutter and bit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE639335A (en) * | ||||
DE2610734A1 (en) * | 1976-03-13 | 1977-09-22 | Krupp Gmbh | TOOL EQUIPPED WITH CUTTING PINS AND DRIVE PINS FOR REMOVING ROCKS AND MINERALS |
CS202186B1 (en) * | 1977-11-29 | 1980-12-31 | Jaroslav Vasek | Knite incl. the knife holder determined for disconnectig the materials part. rocks |
GB2041427B (en) * | 1978-11-01 | 1982-08-18 | Nl Industries Inc | Insert for tool wear surfaces and method of manufacture |
ZA806249B (en) * | 1979-11-19 | 1982-01-27 | Gen Electric | Compacts for diamond drill and saw applications |
EP0103391A3 (en) * | 1982-08-06 | 1985-06-05 | Huddy Diamond Crown Setting Company (Proprietary) Limited | Cutter inserts for picks, picks and pick blanks |
-
1984
- 1984-09-06 GB GB08422564A patent/GB2148353B/en not_active Expired
- 1984-09-07 SE SE8404494A patent/SE8404494L/en not_active Application Discontinuation
- 1984-09-07 DE DE19843432995 patent/DE3432995A1/en not_active Withdrawn
- 1984-09-10 IT IT8422585A patent/IT1196248B/en active
- 1984-09-11 AU AU32901/84A patent/AU3290184A/en not_active Abandoned
- 1984-09-14 FR FR8414112A patent/FR2553146A1/en active Pending
- 1984-09-14 BE BE0/213654A patent/BE900582A/en not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB156521A (en) * | 1914-10-09 | 1922-04-05 | Signal Gmbh | Transmitting arrangement for submarine sound signals |
GB1114156A (en) * | 1964-09-01 | 1968-05-15 | Coal Industry Patents Ltd | Improvements in or relating to cutter picks |
GB1596610A (en) * | 1977-04-30 | 1981-08-26 | Christensen Inc | Drilling tools |
GB2096669A (en) * | 1981-04-11 | 1982-10-20 | Christensen Inc | Cutting member for rotary drill bits |
GB2108554A (en) * | 1981-10-29 | 1983-05-18 | Smith International | Improvements in drag bits |
GB2115460A (en) * | 1982-02-20 | 1983-09-07 | Unicorn Ind Plc | Rotary drilling bits |
GB2136035A (en) * | 1983-02-22 | 1984-09-12 | Nl Industries Inc | Improved pcd cutter and bit |
Also Published As
Publication number | Publication date |
---|---|
GB8422564D0 (en) | 1984-10-10 |
FR2553146A1 (en) | 1985-04-12 |
IT1196248B (en) | 1988-11-16 |
SE8404494L (en) | 1985-03-16 |
BE900582A (en) | 1985-01-02 |
IT8422585A0 (en) | 1984-09-10 |
DE3432995A1 (en) | 1985-04-04 |
SE8404494D0 (en) | 1984-09-07 |
GB2148353B (en) | 1986-03-05 |
AU3290184A (en) | 1985-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |