Blasthole Drilling Handbook

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1、SecorocRockDrillingToolsRotaryproducts–BlastholedrillinghandbookContentsPartPage1Rockbitelements.....................................................52Steeltoothbitselectionandoperation................103Tungstencarbidebitselectionandoperation......134Importanceofre

2、cords............................................185Airrequirementsandnozzleselection.................216Rockformationanddrillability..............................257Guidesforbestbitperformance............................288Dullbits..................................

3、..................................313ContributionstodrillingtechnologyAtlasCopcoSecorocistheworld'sleaderinthemanu-Overtheyearsthatspiritofinnovationhasledtohun-facturerofrockdrillingbitsforthemining,explora-dredsofadvancementsindrillingtools.Ourcommit-tion,andwater

4、wellindustries.mentcontinuestodaywithouremphasisonresearchanddevelopmentofnewproductsandtheimprovementSinceinceptionin1909,ourTriconebitresearchandofexistingtoolsandservicetoourcustomer.technologyhasbeenadrivingforceforourdevelop-ment.Followingarejustafewofthosecont

5、ributionsnowconsideredthe“standardoftheindustry”•1909–Firstrotaryrockbitequippedwithtworoll-•2000–Introduced“HD”productswithupgradedingconecutters.cuttingstructuresandbearingsspecificallyintendedfor“HardDrilling”applications.•1929–Applicationofhardfacingonthecutting

6、structureofcones.•2002–Introducedthe“HD+”productline.HD+of-ferssuperiorperformanceinharddrillingapplica-•1933–IntroductionofthefirstTriconebitwithinter-tionswithnewlydevelopedproprietarycarbides,fittingteeth.newbearingsystems,andnewcuttingstructurede-•1949–Introduct

7、ionofthefirstbroadapplicationofsigns.compressedairformineandquarryblastholedrill-•2003–Introductionofthe“MAGII”productline,ingwithspeciallydesignedROTABLASTbitswithtargetingsofterdrillingapplications.MAGIIbitsairdistributedtothebearings.featureerosionresistantlugsth

8、atprotectbitbear-•1951–Introducesthefirstofthetungstencarbideings,wearresistantcarbidegrades,andenhancedbitinserttoothbits.geometryformore