SE446195B - Carbide rod for drilling rock and the like - Google Patents
Carbide rod for drilling rock and the likeInfo
- Publication number
- SE446195B SE446195B SE8405667A SE8405667A SE446195B SE 446195 B SE446195 B SE 446195B SE 8405667 A SE8405667 A SE 8405667A SE 8405667 A SE8405667 A SE 8405667A SE 446195 B SE446195 B SE 446195B
- Authority
- SE
- Sweden
- Prior art keywords
- phase
- etaphase
- pins
- core
- eta
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 19
- 239000011435 rock Substances 0.000 title claims abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 3
- 239000011707 mineral Substances 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 1
- 229910009043 WC-Co Inorganic materials 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Earth Drilling (AREA)
- Carbon And Carbon Compounds (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Description
8405667-0 2 Ett villkor är dock att ytzonen är helt fri från eta-fas för bibehållande av WC-Co-hárdmetallens goda brottseghets- egenskaper. Den eta-fasfria zonen kan exempelvis skapas genom att man vid hög temperatur tillför kol till ytzonen på stift med genomgående eta-fas. Med varierande av tid och temperatur kan den eta-fasfria zonen styras till önskad tjocklek. 8405667-0 2 One condition, however, is that the surface zone is completely free of the eta phase in order to maintain the good fracture toughness properties of the WC-Co cemented carbide. The eta-phase-free zone can be created, for example, by supplying carbon to the surface zone at high temperature on pins with a continuous eta-phase. With varying time and temperature, the eta-phase-free zone can be controlled to the desired thickness.
Stiftets högre hàllfasthet kan förklaras som följer. Etafas- kärnan har högre styvhet än WC-Co~hârdmetallen vilket inne- bär att stiften utsätts för mindre elastisk deformation ledande till mindre dragspänningar i den kritiska ytzonen när stiftet belastas vid borrning. Konsekvensen av detta är att uppfinningen är speciellt lämpad för stift där förhål- landet mellan höjd och största bredd är större än 0.75 före- trädesvis större än 1.25.The higher strength of the pin can be explained as follows. The Etafas core has a higher stiffness than the WC-Co ~ hard metal, which means that the pins are subjected to less elastic deformation leading to less tensile stresses in the critical surface zone when the pin is loaded during drilling. The consequence of this is that the invention is particularly suitable for pins where the ratio between height and maximum width is greater than 0.75, preferably greater than 1.25.
Allteftersom avverkningen fortgår får stiften en ökande slitfas vilket i sin tur ger upphov till en ökad mekanisk pàkänning. Kontaktytan hårdmetall-berg ökar, krafterna blir snart mycket stora på stiften och risken ökar för att de slås av. Stift med eta-fas-kärna enligt uppfinningen klarar p g a den väsentligt ökade styvheten och hàllfastheten be- tydligt större slitfaser i jämförelse med konventionella stift. (Anledningen till att man omslipar konventionella stift är t ex att ta bort slitfasen och därmed minska påkän- ningen d v s risken för brott. Omslipning skulle således kunna undvikas i ökad omfattning vid användning av stift enligt uppfinningen).As felling continues, the pins have an increasing wear phase, which in turn gives rise to an increased mechanical stress. The carbide-rock contact surface increases, the forces soon become very large on the pins and the risk of them being knocked off increases. Pins with eta-phase core according to the invention can withstand significantly larger wear phases in comparison with conventional pins due to the significantly increased stiffness and strength. (The reason for regrinding conventional pins is, for example, to remove the wear phase and thereby reduce the stress, ie the risk of breakage. Regrinding could thus be avoided to an increased extent when using pins according to the invention).
I regel har eta-fashaltig hårdmetall högre hårdhet än mot- svarande eta-fasfri med samma sammansättning. Som framgår av följande utföringsexempel kan den prestandahöjande effek- ten av eta-faskärnan ej förklaras med högre hårdhet d v s ökad slitstyrka. WC-Co-varianten med en hårdhet motsvarande eta-fas-varianten har i samtliga exempel visat underlägsna prestanda. 8405667-0 Etafasen skall vara finkornig med en kornstorlek av 0.5 - / grundmassan av den normala WC-Co strukturen i centrum av um företrädesvis 1 - 5 /um och jämnt fördelad i hàrdmetallkroppen. Det har visat sig att etafaskärnans tjocklek skall vara 10 - 95 % företrädesvis 40 - 75 % av hårdmetallkroppens tvärsnitt då dessa goda resultat uppnås.As a rule, eta-phase-containing cemented carbide has a higher hardness than the corresponding eta-phase-free one with the same composition. As can be seen from the following exemplary embodiment, the performance-enhancing effect of the eta-phase core cannot be explained by higher hardness, i.e. increased wear resistance. The WC-Co variant with a hardness corresponding to the eta-phase variant has shown in all examples inferior performance. 8405667-0 The ethaphase should be fine-grained with a grain size of 0.5 - / matrix of the normal WC-Co structure in the center of um preferably 1 - 5 / um and evenly distributed in the cemented carbide body. It has been found that the thickness of the etaphase core should be 10 - 95%, preferably 40 - 75% of the cross section of the cemented carbide body when these good results are achieved.
Kärnan bör innehålla minst 2 vol% företrädesvis minst 10 vol% etafas, eftersom annars ingen effekt uppnås, men maxi- malt 60 vol% företrädesvis maximalt 35 vol%.The core should contain at least 2% by volume, preferably at least 10% by volume of etaphase, otherwise no effect is achieved, but a maximum of 60% by volume, preferably a maximum of 35% by volume.
Den positiva prestandaökningen märks vid alla hàrdmetallsor- ter som normalt används i ovannämnda applikationer från sorter med 3 vikt% Co upp till sorter med 35 vikt% Co före- trädesvis med 5 - 10 vikt% Co för slående borrning, 10 - 25 vikt% Co för roterande-krossande borrning och 8 - 15 vikt% Co för mineral tools och där WC-kornstorleken kan variera från 1,5 /um upp till 8 /um företrädesvis 2 ~ 5 /um.The positive increase in performance is noticeable in all cemented carbide grades normally used in the above-mentioned applications, from varieties with 3% by weight Co up to varieties with 35% by weight Co, preferably with 5 - 10% by weight Co for striking drilling, 10 - 25% by weight Co for rotary-crushing drilling and 8 - 15% by weight Co for mineral tools and where the toilet grain size can vary from 1.5 / um up to 8 / um preferably 2 ~ 5 / um.
Fig 1 visar ett stift enligt uppfinningen i längd- och tvär- snitt. I figuren betecknar A - eta-fashaltig hàrdmetall, B - etafasfri hårdmetall och C - ingjutningsmassa(bakelit).Fig. 1 shows a pin according to the invention in longitudinal and cross-section. In the figure, A denotes - eta-phase cemented carbide, B - etaphase-free cemented carbide and C - grout (bakelite).
Det har även visat sig att andelen Co i M6-karbiden (eta- fasen) helt eller delvis kan bytas ut mot någon av metaller- na Fe eller Ni d v s själva betafasen kan bestå av en eller flera av järnmetallerna i kombination, och även i detta fall ökas hárdmetallens prestanda i förvånansvärt hög grad.It has also been found that the proportion of Co in the M6 carbide (eta phase) can be completely or partially replaced by one of the metals Fe or Ni, ie the beta phase itself can consist of one or more of the ferrous metals in combination, and also in this In this case, the performance of the cemented carbide increases to a surprisingly high degree.
I texten ovan såväl som i exemplen nedan belyses bara etafa- sens positiva effekter i centrum av hàrdmetallstift där alfafasen är WC och betafasen är en eller flera av järnme- tallerna (Fe, Ni eller Co). Orienterande försök'har också givit mycket lovande resultat då maximalt 15 vikt% wolfram i alfafasen är substituerat mot någon eller flera av de metalliska karbidbildarna Ti, Zr, Hf, V, Nb, Ta, Cr och Mo. 8405667-0 Exemgel 1 Av ett WC - 6%Co - pulver med 0.3 % understökiometrisk kol- halt (5,5 % C i stället för 5.8 % C) pressades stift med höjden 16 mm och diametern 10 mm. Stiften försintrades i N2-gas i 1 h vid 900 OC. Därefter inpackades stiften glest i fint Al2O3-pulver i grafitboxar och sintrades i uppkolande atmosfär i 2 h vid 1450 OC i en genomskjut- ningsugn. I inledningsskedet av sintringen bildades då en struktur av alfa + beta-fas och i denna jämnt fördelad fin- kornig eta-fas. Samtidigt bildades i ytan av stiften en mycket smal zon av enbart alfa + beta struktur p g a att kol börjar diffundera in i stiften och ombilda eta-fasen till alfa- + beta-fas. Efter 2 h sintringstid hade till- räckligt med kol diffunderat in och ombildat all eta-fas i en bred ytzon. De på detta sätt tillverkade stiften hade efter sintringen en 2 mm eta-fasfri ytzon och en kärna med diametern 6 mm innehållande finfördelad eta-fas.In the text above as well as in the examples below, only the positive effects of etaphase are highlighted in the center of cemented carbide pins where the alpha phase is WC and the beta phase is one or more of the ferrous metals (Fe, Ni or Co). Orientation experiments have also given very promising results as a maximum of 15% by weight of tungsten in the alpha phase is substituted for one or more of the metallic carbide formers Ti, Zr, Hf, V, Nb, Ta, Cr and Mo. 8405667-0 Example gel 1 From a WC - 6% Co - powder with 0.3% understochiometric carbon content (5.5% C instead of 5.8% C) pins with a height of 16 mm and a diameter of 10 mm were pressed. The pins were pre-sintered in N2 gas for 1 hour at 900 ° C. Then the pins were wrapped sparsely in fine Al 2 O 3 powder in graphite boxes and sintered in a carbonating atmosphere for 2 hours at 1450 ° C in a sliding oven. In the initial stage of sintering, a structure of alpha + beta phase was formed and in this evenly distributed fine-grained eta phase. At the same time, a very narrow zone of alpha + beta structure was formed in the surface of the pins only because carbon begins to diffuse into the pins and transform the eta phase into alpha + beta phase. After 2 hours of sintering time, sufficient carbon had diffused in and reshaped all eta phase in a wide surface zone. The pins made in this way after sintering had a 2 mm eta-phase-free surface zone and a core with a diameter of 6 mm containing finely divided eta-phase.
Exemgel 2 Berg: Hård förslitande granit med inslag av leptit, tryck- hâllfasthet 2800 - 3100 bar.Example gel 2 Rock: Hard abrasive granite with elements of leptite, compressive strength 2800 - 3100 bar.
Maskin: Atlas Copco COP 1038 HD, Hydraulisk borrmaskin för tyngre drifterutrustning. Matningstryck 85 bar, rotations- tryck 45 bar, varvtal 200 rpm.Machine: Atlas Copco COP 1038 HD, Hydraulic drilling machine for heavier operating equipment. Feed pressure 85 bar, rotary pressure 45 bar, speed 200 rpm.
Kronor: 45 mm stiftborrkronor, 2 vings med 10 mm periferi- stift med höjd 16 mm, 10 st kronor per variant.Crowns: 45 mm pin drill bits, 2 wings with 10 mm peripheral pin with a height of 16 mm, 10 kronor per variant.
Hárdmetallsammansättnig: 94 vikts% WC och 6 vikts% Co. Korn- storlek (variant l - 3) = 2.5 /um 8405667-0 Provvarianter Eta-fasvarianter 1. etafaskärna Q 6 mm, etafas-fri ytzon 2 mm 2. etafaskärna 0 7.5 mm, etafas-fri ytzon 1.25 mm Konventionella 3. normal struktur utan etafas sorter 4. normal struktur utan etafas, men finkornigare c a 1.8 /um för erhållande av hårdhet och slitstyrka jämförbar med etafasvarianterna Utförande Kronorna borrades i omgångar om 7 hål ä 5 meter och varva- des så att rättvisa borrförhàllanden förelåg. Kronorna togs ur provning omedelbart vid första skada på stiften och borr- metertalet noterades.Carbide composition: 94% by weight WC and 6% by weight Co. Grain size (variant 1 - 3) = 2.5 / um 8405667-0 Sample variants Eta phase variants 1. stage phase Q 6 mm, stage phase-free surface zone 2 mm 2. stage phase core 0 7.5 mm, stage phase-free surface zone 1.25 mm Conventional 3. normal structure without etaphase varieties 4. normal structure without etaphase, but finer approx. 1.8 .mu.m to obtain hardness and wear resistance comparable to etaphase variants Design The crowns were drilled in rounds of 7 holes of 5 meters and alternated so that fair drilling conditions were present. The crowns were removed from testing immediately at the first damage to the pins and the drilling meter number was noted.
Resultat Variant Antal borrmeter, m HV3 medel max min sprid- cent- ning rum 1 300.8 359 270 32.9 1490 2 310.2 361 271 39.8 1510 3 225.8 240 195 17.2 1420 4 220 340 103 65 1510 Bästa etafasvariant hade c a 40 % högre livslängd än bästa konventionella sort.Result Variant Number of drilling meters, m HV3 average max min spreading rate room 1,300.8 359 270 32.9 1490 2 310.2 361 271 39.8 1510 3 225.8 240 195 17.2 1420 4 220 340 103 65 1510 Best stage phase variant had about 40% higher service life than best conventional variety.
Exemgel 3 Berg: Förslitande granit med tryckhållfasthet ca 2000 bar.Example gel 3 Rock: Abrasive granite with compressive strength approx. 2000 bar.
Maskin: Atlas Copco Cop 62, pneumatiskt larvbandsgående aggregat för sänkborrning. Lufttryck 18 bar, varvtal 40 rpm. 8405667-Û 6 Kronor: 165 mm sänkborrkronor med stift ø 14 och 16 mm, höjd 24 mm, 5 kronor/variant. Omslipningsintervall: 42 m.Machine: Atlas Copco Cop 62, pneumatic crawler unit for countersink drilling. Air pressure 18 bar, speed 40 rpm. 8405667-Û 6 Crowns: 165 mm countersunk drill crowns with pins ø 14 and 16 mm, height 24 mm, 5 kronor / variant. Sanding interval: 42 m.
Håldjup: Zl m.Hole depth: Zl m.
Hårdmetallsammansättning enligt Exempel 2. Samtliga varian- ter hade en kornstorlek av 2.5 /um.Carbide composition according to Example 2. All variants had a grain size of 2.5 .mu.m.
Provvarianter: Etafas- _ 1. 9 mm etafaskärna, 3.5 mm etafasfri ytzon varianter: 2. 12 mm etafaskärna, 2 mm etafasfri zon.Sample variants: Etafas- _ 1. 9 mm etaphase core, 3.5 mm etaphase-free surface zone variants: 2. 12 mm etaphase core, 2 mm etaphase-free zone.
Konventionella 3. WC-Co utan etafas referenssorter 4. WC-Co utan etafas finkornig 1.8 /um Utförande: Vid varje omslípning d v s efter vart annat hål omkastades turordningen bland kronorna på så sätt att likvärdiga borr- förhållanden säkerställdes. Borrningen avbröts för varje krona när diameterslitaget blev för stort eller då någon stiftskada kunde noteras.Conventional 3. WC-Co without etaphase reference varieties 4. WC-Co without etaphase fine-grained 1.8 / um Design: At each regrouping, ie after every other hole, the order of rotation among the crowns was reversed in such a way that equivalent drilling conditions were ensured. Drilling was interrupted for each crown when the diameter wear became too great or when any pin damage could be noted.
Resultat: Variant Antal borrmeter, m HV3 medel index (centrum) 1 ' 750 100 1495 2 674 90 1525 3 573 76 1415 4 429 57 ' 1515 Bästa etafasvarianten uppvisade ca 25 % längre livslängd än den konventionella sorten och hade hela 43 % längre livs- längd än sorten med jämförbar hårdhet.Result: Variant Number of drilling meters, m HV3 average index (center) 1 '750 100 1495 2 674 90 1525 3 573 76 1415 4 429 57' 1515 The best stage phase variant had about 25% longer life than the conventional variety and had as much as 43% longer life length than the variety with comparable hardness.
Exemgel 4 500 m2 asfalt av medium till hårt förslitande typ frästes utan uppvärmning. Lufttemperatur 15 OC. Tre varianter testades. 8405667-0 7 Maskin: Arrow CP2000 vägplaningsmaskin. Hydraulisk, fyr- hjulsdriven maskin med automatisk skärdjupskontroll.Exemgel 4,500 m2 of asphalt of medium to hard-wearing type was milled without heating. Air temperature 15 OC. Three variants were tested. 8405667-0 7 Machine: Arrow CP2000 road planing machine. Hydraulic, four-wheel drive machine with automatic cutting depth control.
Skärtrumma: Bredd 2 m, diameter inkl verktyg: 950 mm, peri- ferihastighet: 3.8 m/s, skärdjup: 40 mm.Cutting drum: Width 2 m, diameter incl tools: 950 mm, peripheral speed: 3.8 m / s, cutting depth: 40 mm.
Bestyckning: 166 st verktyg jämnt fördelade runt trumman, varav S0 verktyg (20 per variant) med 1) och 2) konventio- nell hárdmetall och 3) hàrdmetall enligt uppfinningen. Test- varianterna är parvis i ingrepp samtidigt och jämnt fördela- de runt trumman längs hela bredden.Equipment: 166 tools evenly distributed around the drum, of which S0 tools (20 per variant) with 1) and 2) conventional carbide and 3) carbide according to the invention. The test variants are engaged in pairs at the same time and evenly distributed around the drum along the entire width.
Provvarianter 4 Co, antal anm W/o 1. Konventionell 9.5 106 normal sort- 2. Konventionell 8 20 lägre Co-halt för sort ökad slitstyrka och hårdhet motsvarande etafasvarianten 3. etafasvariant 9.5 20 ca 1.5 mm etafasfri ytzon Samtliga stift hade höjd 17 mm och diameter 16 mm.Sample variants 4 Co, number of notes W / o 1. Conventional 9.5 106 normal variety- 2. Conventional 8 20 lower Co content for variety increased wear resistance and hardness corresponding to the phase phase variant 3. phase phase variant 9.5 20 approx. 1.5 mm phase phase-free surface zone All pins had a height of 17 mm and diameter 16 mm.
Så snart ett provstift eller normalstift fallerade byttes verktyget omedelbart ut mot ett standardverktyg.As soon as a test pin or standard pin failed, the tool was immediately replaced with a standard tool.
Resultat Variant Höjdreduktion Skadade och Rang- HV3 (förslitning) mm utbytta stift ordning l 3.5 l.2(relativt) III 1208 '2 2.6 2 1:1' 1280 3 2.6 0 ' I 1295 8405667-0 Exempel Q Provplats: Borrning i dagbrott med rullborrkronor.Result Variant Height reduction Damaged and Rank- HV3 (wear) mm replaced pin order l 3.5 l.2 (relative) III 1208 '2 2.6 2 1: 1' 1280 3 2.6 0 'I 1295 8405667-0 Example Q Test site: Drilling in open pit with roller drill bits.
Maskin: Buuyrus Erie 60R. Matningskraft 40 ton vid 70 rpm.Machine: Buuyrus Erie 60R. Feed power 40 tons at 70 rpm.
Hål med djup mellan 10 och 17 m borrades.Holes with depths between 10 and 17 m were drilled.
Borrkrona: 12 1/4"-rullborrkrona, två kronor per variant.Drill bit: 12 1/4 "roller drill bit, two kroner per variant.
Berg: Företrädesvis gràberg med inslag av kvarts, tryckhåll- fasthet 1350 - 1600 kp/cmz.Rock: Preferably gray rock with elements of quartz, compressive strength 1350 - 1600 kp / cmz.
Provvarianter 1. Standard 10 % Co, stift Q 14 mm och höjd 21 mm 2. Etafas-variant 10 % Co Stift ø 14 mm och höjd 21 mm o med 2 mm etafasfri ytzon och 0 10 mm etafas-kärna Resultat Borrmeter index borrsjunk- index m ning, m/h Standard 1220 100 13 100 etafasvariant 1704 140 15 115 I detta exempel har varianten enligt uppfinningen både upp- nått en längre livslängd och högre borrsjunkning.Sample variants 1. Standard 10% Co, pin Q 14 mm and height 21 mm 2. Etafas variant 10% Co Pin ø 14 mm and height 21 mm o with 2 mm etaphase-free surface zone and 0 10 mm etaphase core Result Drill gauge index drilling sink- index m ning, m / h Standard 1220 100 13 100 stage phase variant 1704 140 15 115 In this example, the variant according to the invention has achieved both a longer service life and a higher drilling subsidence.
Exempel 6 I stígortsaggregat används rullar med hàrdmetallstift.Example 6 In riser assemblies, rollers with cemented carbide pins are used.
Stift med eta-faskärna testades i ett 7 fots borrhuvud.Pins with eta-phase core were tested in a 7-foot drill head.
Bergart: Gnejs, tryckhållfasthet: 262 MPa, hård och för- slitande.Rock type: Gneiss, compressive strength: 262 MPa, hard and abrasive.
Borraggregat: Robbins 71R.Drilling unit: Robbins 71R.
Borrad längd: 149.5 m.Drilled length: 149.5 m.
Borrningshastighet: 0.8 m/h 8405667-0 9 En rulle var bestyckad med stift ø 22 mm och höjd 30 mm i en standardsort med 15 % Co och rest 2 /um WC. En test- rulle placerad diametralt på stigortshuvudet var bestyckad med stift med etafaskärna enligt följande: % Co, 2 /um WC, eta-fasfri ytzon: 3 mm eta-faskärnans bredd: 16 mm Resultat: På rullen med standardstift hade 30 % av stiften skador medan på testrullen endast 5 % av stiften var ur funktion.Drilling speed: 0.8 m / h 8405667-0 9 A roller was equipped with pins ø 22 mm and a height of 30 mm in a standard type with 15% Co and residual 2 / um WC. A test roll placed diametrically on the riser head was fitted with pins with eta phase core as follows:% Co, 2 / um WC, eta-phase-free surface zone: 3 mm eta-phase core width: 16 mm Result: On the roll with standard pins, 30% of the pins had damage while on the test roll only 5% of the pins were out of order.
Claims (5)
Priority Applications (20)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8405667A SE446195B (en) | 1984-11-13 | 1984-11-13 | Carbide rod for drilling rock and the like |
| SE8503804A SE446196B (en) | 1984-11-13 | 1985-08-14 | HARD METAL BODY FOR MOUNTAIN DRILLING OR DYL |
| IN821/MAS/85A IN165813B (en) | 1984-11-13 | 1985-10-17 | |
| ZA858049A ZA858049B (en) | 1984-11-13 | 1985-10-18 | Cemented carbide body used preferably for rock drilling and mineral cutting |
| EP85850333A EP0182759B2 (en) | 1984-11-13 | 1985-10-23 | Cemented carbide body used preferably for rock drilling and mineral cutting |
| DE8585850333T DE3574738D1 (en) | 1984-11-13 | 1985-10-23 | SINDERED HARD METAL ALLOY FOR STONE DRILLING AND CUTTING MINERALS. |
| AT85850333T ATE48655T1 (en) | 1984-11-13 | 1985-10-23 | SINTERED CARBIDE ALLOY FOR ROCK DRILLING AND MINERAL CUTTING. |
| US06/791,556 US4743515A (en) | 1984-11-13 | 1985-10-25 | Cemented carbide body used preferably for rock drilling and mineral cutting |
| MX000433A MX170150B (en) | 1984-11-13 | 1985-10-29 | PREFERRED USED CEMENT CARBIDE BODY FOR DRILLING ROCKS AND MINERAL CUTTING |
| CA000494089A CA1249606A (en) | 1984-11-13 | 1985-10-29 | Cemented carbide body used preferably for rock drilling and mineral cutting |
| FI854321A FI79862C (en) | 1984-11-13 | 1985-11-04 | HAORDMETALLKROPP ANVAEND FOERETRAEDESVIS FOER BERG- OCH MINERALAVVERKNING. |
| AU49736/85A AU588003B2 (en) | 1984-11-13 | 1985-11-11 | Cemented carbide body used preferably for rock drilling and mineral cutting |
| BR8505668A BR8505668A (en) | 1984-11-13 | 1985-11-11 | USED CEMENTED CARBIDE BODY OF PREFERENCE FOR DRILLING ROCKS AND CUTTING MINERALS |
| NO854508A NO165447C (en) | 1984-11-13 | 1985-11-12 | HARD METAL BODY FOR USE IN MOUNTAIN DRILLING AND CUTTING OF MINERALS. |
| CN85108173A CN1016711B (en) | 1984-11-13 | 1985-11-12 | Hard alloy suitable for drilling rock and cutting ore |
| SU853975462A SU1604166A3 (en) | 1984-11-13 | 1985-11-12 | Cermet high-melting wafer |
| JP60252100A JPH068477B2 (en) | 1984-11-13 | 1985-11-12 | Cemented Carbide Body |
| ES548783A ES8706093A1 (en) | 1984-11-13 | 1985-11-12 | Cemented carbide body used preferably for rock drilling and mineral cutting. |
| IE281785A IE58589B1 (en) | 1984-11-13 | 1985-11-12 | Cemented carbide body used preferably for rock drilling and mineral cutting |
| PT81474A PT81474B (en) | 1984-11-13 | 1985-11-12 | METHOD FOR PREPARING HARD METAL PULP METHODS USED PREFERABLY FOR ROCK DRILLING AND MINERAL CUTTING |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8405667A SE446195B (en) | 1984-11-13 | 1984-11-13 | Carbide rod for drilling rock and the like |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8405667D0 SE8405667D0 (en) | 1984-11-13 |
| SE8405667L SE8405667L (en) | 1986-05-14 |
| SE446195B true SE446195B (en) | 1986-08-18 |
Family
ID=20357718
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8405667A SE446195B (en) | 1984-11-13 | 1984-11-13 | Carbide rod for drilling rock and the like |
| SE8503804A SE446196B (en) | 1984-11-13 | 1985-08-14 | HARD METAL BODY FOR MOUNTAIN DRILLING OR DYL |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8503804A SE446196B (en) | 1984-11-13 | 1985-08-14 | HARD METAL BODY FOR MOUNTAIN DRILLING OR DYL |
Country Status (4)
| Country | Link |
|---|---|
| IN (1) | IN165813B (en) |
| SE (2) | SE446195B (en) |
| SU (1) | SU1604166A3 (en) |
| ZA (1) | ZA858049B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11162161B2 (en) * | 2015-12-21 | 2021-11-02 | Sandvik Intellectual Property Ab | Cutting tool |
| DE102016207028A1 (en) * | 2016-04-26 | 2017-10-26 | H.C. Starck Gmbh | Carbide with toughening structure |
| EP3366795A1 (en) * | 2017-02-28 | 2018-08-29 | Sandvik Intellectual Property AB | Cutting tool |
-
1984
- 1984-11-13 SE SE8405667A patent/SE446195B/en not_active IP Right Cessation
-
1985
- 1985-08-14 SE SE8503804A patent/SE446196B/en not_active IP Right Cessation
- 1985-10-17 IN IN821/MAS/85A patent/IN165813B/en unknown
- 1985-10-18 ZA ZA858049A patent/ZA858049B/en unknown
- 1985-11-12 SU SU853975462A patent/SU1604166A3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| SU1604166A3 (en) | 1990-10-30 |
| SE446196B (en) | 1986-08-18 |
| ZA858049B (en) | 1986-06-25 |
| SE8405667D0 (en) | 1984-11-13 |
| SE8405667L (en) | 1986-05-14 |
| IN165813B (en) | 1990-01-20 |
| SE8503804D0 (en) | 1985-08-14 |
| SE8503804L (en) | 1986-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
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| NUG | Patent has lapsed |