Yiza ukuqonda isantya esiphezulu sentsimbi
High-speed steel (HSS) sisixhobo sentsimbi enobulukhuni obuphezulu, ukumelana nokunxiba okuphezulu kunye nokumelana nobushushu obuphezulu, okwakwaziwa ngokuba yintsimbi yomoya okanye intsimbi yangaphambili, nto leyo ethetha ukuba inokuqina naxa ipholile emoyeni ngexesha lokucinywa, kwaye ibukhali kakhulu.Ikwabizwa ngokuba yintsimbi emhlophe.
Izixhobo ze-Xinfa ze-CNC zineempawu zomgangatho omhle kunye nexabiso eliphantsi.Ngeenkcukacha, nceda undwendwele: https://www.xinfatools.com/hss-tap/
Isinyithi esinesantya esiphezulu yintsimbi ye-alloy ene-complex composition, equlethe izinto ezenza i-carbide ezifana ne-tungsten, i-molybdenum, i-chromium, i-vanadium, kunye ne-cobalt.Isixa esipheleleyo sezinto ezidibeneyo malunga ne-10-25%.Isenokugcina ubunzima obuphezulu phantsi kwemeko yobushushu obuphezulu obuveliswa ngokusika kwesantya esiphezulu (malunga ne-500 ℃), kunye ne-HRC yayo ingaba ngaphezu kwe-60. Le yimpawu ebaluleke kakhulu yensimbi ephezulu-ubunzima obomvu.Emva kokucima kunye nokushisa okuphantsi kweqondo lokushisa, i-carbon tool steel inobunzima obuphezulu kwiqondo lokushisa, kodwa xa iqondo lokushisa lingaphezulu kwama-200 ° C, ubunzima buyehla ngokukhawuleza, kwaye ukuqina kuye kwehla kwinqanaba elifana nelobume be-annealed state. 500°C., Ukulahlekelwa ngokupheleleyo ukukwazi ukusika isinyithi, esinciphisa ukusetyenziswa kwensimbi ye-carbon tool yezixhobo zokusika.Intsimbi yesantya esiphezulu yenza ukusilela okubulalayo kwensimbi yesixhobo sekhabhoni ngenxa yokuqina kwayo okuhle obomvu.
Intsimbi enesantya esiphezulu isetyenziswa ikakhulu ukwenza iincakuba ezibhityileyo ezintsonkothileyo kunye nezixhobo zokusika intsimbi ezinganyangekiyo, kunye neebheringi ezinobushushu obuphezulu kunye nokufa okubandayo, okufana nezixhobo ezijikayo, iibhithi zokuqhuba, iihobs, iisarha zoomatshini kunye nokungunda okufunwayo.
▌ Masifunde ngentsimbi ye-tungsten
Insimbi ye-Tungsten (i-tungsten carbide) inoluhlu lweempawu ezigqwesileyo ezifana nobunzima obuphezulu, ukuxhathisa ukunxiba, amandla alungileyo kunye nokuqina, ukumelana nobushushu kunye nokumelana nokugqwala, ngakumbi ukuqina kwayo okuphezulu kunye nokumelana nokunxiba, nakwiqondo lobushushu le-500 ° C. Ihlala ihlala ngokusisiseko ayitshintshanga, kwaye isenobunzima obuphezulu kwi-1000 °C.
Intsimbi yeTungsten, awona malungu aphambili yitungsten carbide kunye necobalt, ethatha i-99% yazo zonke izinto, kwaye i-1% yezinye isinyithi, ke ibizwa ngokuba yi-tungsten steel, ekwabizwa ngokuba yi-cemented carbide, kwaye ithathwa njengezinyo langoku. ishishini.
Intsimbi yeTungsten yimathiriyeli edityanisiweyo eyenziwe ngentsimbi enye ubuncinane.I-tungsten carbide, i-cobalt carbide, i-niobium carbide, i-titanium carbide, kunye ne-tantalum carbide zizinto eziqhelekileyo zentsimbi ye-tungsten.Ubungakanani obuziinkozo becandelo le-carbide (okanye isigaba) ngokuqhelekileyo phakathi kwe-0.2-10 microns, kunye neengqolowa ze-carbide zibanjwe kunye zisebenzisa i-binder yensimbi.Iintsimbi zokubopha zidla ngokuba ziintsimbi zeqela lentsimbi, ezidla ngokusetyenziswa yicobalt kunye nenickel.Ngoko ke, kukho i-tungsten-cobalt alloys, i-tungsten-nickel alloys kunye ne-tungsten-titanium-cobalt alloys.
Ukucoca intsimbi ye-tungsten kukucinezela umgubo kwi-billet, emva koko uyitshise kwisithando somlilo ukuya kwiqondo elithile lobushushu (ubushushu be-sintering), uyigcine ixesha elithile (ukubamba ixesha), kwaye emva koko uyipholise ukuze uyifumane. impahla yensimbi ye-tungsten eneempawu ezifunekayo.
① I-tungsten-cobalt enesamente carbide
Amacandelo aphambili yi-tungsten carbide (WC) kunye ne-binder cobalt (Co).Ibanga lalo liqulunqwe "YG" (i-initials ye-pinyin yaseTshayina ye "hard, cobalt") kunye nepesenti yomxholo we-cobalt ophakathi.Umzekelo, i-YG8 ithetha ukuba i-avareji ye-WCo = 8%, kwaye enye i-tungsten-cobalt cemented carbide ye-tungsten carbide.
②I-tungsten-titanium-cobalt ye-cemented carbide
Amacandelo aphambili yi-tungsten carbide, titanium carbide (TiC) kunye ne-cobalt.Ibakala layo lenziwe "YT" (i-initials ye-pinyin yaseTshayina ye "hard, titanium") kunye nomxholo ophakathi we-titanium carbide.Umzekelo, i-YT15 ithetha ukuba i-avareji ye-TiC = 15%, kwaye enye i-tungsten carbide kunye ne-cobalt-based tungsten-titanium-cobalt cemented carbide.
③I-tungsten-titanium-tantalum (niobium) esekwe kwi-carbide enesamente
Amacandelo aphambili yi-tungsten carbide, i-titanium carbide, i-tantalum carbide (okanye i-niobium carbide) kunye ne-cobalt.Olu hlobo lwe-cemented carbide lukwabizwa ngokuba yi-carbide ye-cemented general okanye i-universal cemented carbide.Ibakala layo lenziwe ngo-“YW” (oonobumba bokuqala be-pinyin yesiTshayina ethi “hard” kunye no-“wan”) kunye nenombolo yolandelelwano, efana no-YW1.
Intsimbi yeTungsten inoluhlu lweempawu ezibalaseleyo ezinjengokuqina okuphezulu, ukumelana nokunxiba, ukomelela okuhle kunye nokuqina, ukumelana nobushushu kunye nokumelana nokubola, ngakumbi ubunzima bayo obuphezulu kunye nokumelana nokunxiba, okuhlala kungatshintshi nakwiqondo lobushushu le-500 ° C.Usenobunzima obuphezulu kwi-1000°C.I-carbide ene-cemented isetyenziswa ngokubanzi njengezinto eziphathekayo, ezifana nezixhobo zokuguqula, i-milling cutters, i-drills, izixhobo ezithandekayo, njl.
Ixesha lokuposa: Aug-09-2023
