HSS, High SpeedSteel, ke mofuta oa lisebelisoa tseo ke kopanang le tsona haholo ha ke kena indastering ea lisebelisoa.Hamorao, re ile ra ithuta hore tšepe ea lebelo le phahameng leo re neng re e sebelisa ka nako eo e lokela ho bitsoa "tšepe e tloaelehileng ea lebelo le phahameng", 'me ho na le thepa e molemo ho feta eona, e kang tšepe e phahameng ea aluminium, tšepe ea cobalt e phahameng, joalo-joalo, eo ho totobetseng hore e teng. e phahametseng eona ho latela sebopeho sa alloy, kapa metallurgy metallurgy high speed steel eo ho hlakileng hore e phahametse ho latela mokhoa oa ho qhibilihisa;Ha e le hantle, ho boetse ho na le seo ho thoeng ke "tšepe e tlaase ea alloy high-speed" e nang le ts'ebetso e tlaase.
Lisebelisoa tsa tšepe tse lebelo haholo li na le likarolo tse peli tsa mantlha:E 'ngoe ke tšepe ea carbide (tungsten carbide, molybdenum carbide kapa vanadium carbide), e fanang ka sesebelisoa ho hanyetsa ho apara hantle;Ea bobeli ke matrix ea tšepe e ajoang ho e potoloha, e etsang hore sesebelisoa se be le boima bo betere le bokhoni ba ho monya tšusumetso le ho thibela ho arohana.
Ho fumanoa hore boholo ba lijo-thollo tsa tšepe e phahameng e na le tšusumetso e kholo ho thepa ea tšepe e phahameng.Le hoja ho eketsa palo ea likaroloana tsa tšepe ka tšepe ho ka ntlafatsa ho hanyetsa ha thepa, ka ho eketseha ha lihlahisoa tsa alloy, boholo ba carbide le palo ea li-agglomerate le tsona li tla eketseha, tse tla ba le phello e mpe haholo ho boima. ea tšepe, hobane lihlopha tse khōlō tsa carbide li ka 'na tsa fetoha sebaka sa ho qala sa mapetsong.Ka hona, linaha tsa kantle li entse lipatlisiso esale pele ho phehella lijo-thollo tse ntle tsa tšepe ea lebelo le holimo.
Ho elella bofelong ba lilemo tsa bo-1960, ts'ebetso ea tlhahiso ea tšepe e potlakileng ea phofo e ile ea ntlafatsoa ka katleho Sweden 'me ea kena' marakeng mathoasong a bo-1970.Ts'ebetso ena e ka eketsa likarolo tse ling tsa alloy ka har'a tšepe e lebelo le holimo ntle le ho senya matla, ho tiea kapa ho sila ha thepa, e le hore sesebelisoa se nang le boima bo phahameng, ho hanyetsa ho roala holimo, se ka monya tšusumetso ea ho itšeha, 'me se loketse ho sebetsa ka sekhahla se phahameng. le ts'ebetso ea nakoana ea ho itšeha e ka etsoa.Leha ho le joalo, e kopanya ho tiea ho hotle ha tšepe ea lebelo le phahameng le khanyetso e phahameng ea carbide e entsoeng ka samente.Ka lebaka la kabo e ntle le e ts'oanang ea likaroloana tsa carbide ka tšepe ea phofo e lebelo le phahameng, matla a eona le ho tiea ha eona li ntlafalitsoe haholo ha li bapisoa le tšepe e tloaelehileng ea lebelo le phahameng e nang le carbide e tšoanang.Ka molemo ona, lisebelisoa tsa tšepe tse nang le phofo tse phahameng tsa tšepe li loketse haholo liketsahalong tsa machining tse nang le tšusumetso e kholo ea ho itšeha le sekhahla se phahameng sa ho tlosoa ha tšepe (joalo ka ho itšeha ha flexure, ho itšeha ka nakoana, joalo-joalo).Ho phaella moo, hobane matla le ho tiea ha tšepe ea phofo e phahameng-lebelo e ke ke ea fokolloa ke ho eketseha ha tšepe ea carbide, baetsi ba tšepe ba ka eketsa palo e kholo ea likarolo tsa motsoako ho tšepe ho ntlafatsa ts'ebetso ea lisebelisoa tsa lisebelisoa.Ka nako e ts'oanang, hobane lisebelisoa tsa tungsten (W) ke lisebelisoa tsa maqheka, 'me li-carbides tsa morao-rao tse entsoeng ka samente li sebelisa lisebelisoa tsa tungsten ka bongata, tšepe e tlaase ea tungsten e fetohile tataiso ea lipatlisiso le tsoelo-pele ea tšepe e phahameng.Litšepe tse phahameng tse nang le cobalt (HSS-Co) li entsoe ka bongata linaheng tse ling.Hamorao, ho ile ha hlokomeloa ka machaba hore tšepe ea lebelo le phahameng e nang le cobalt e nang le cobalt e fetang 2% e ne e le tšepe e phahameng ea lebelo le phahameng (HSSE).Cobalt e boetse e phetha karolo e totobetseng ho ntlafatsa ts'ebetso ea tšepe e phahameng.E ka khothaletsa li-carbides ho qhibiliha ho feta ka har'a matrix nakong ea ho tima le ho futhumatsa, 'me e sebelisa boima bo phahameng ba matrix ho ntlafatsa ho hanyetsa ho roala.Tšepe ea lebelo le phahameng e na le boima bo botle, boima ba mocheso, ho hanyetsa le ho sila.Likahare tsa cobalt tsa tšepe e tloaelehileng ea cobalt ka lebelo le phahameng lefatšeng hangata ke 5% le 8%.Ka mohlala, W2Mo9Cr4VCo8 (Letšoao la Amerika M42) le khetholloa ka lintho tse tlaase tsa vanadium (1%), li-cobalt tse ngata (8%) le boima ba phekolo ea mocheso oa 67-70HRC.Leha ho le joalo, mekhoa e khethehileng ea phekolo ea mocheso e boetse e amoheloa ho fumana boima ba 67-68HRC, bo ntlafatsang ts'ebetso ea eona ea ho itšeha (haholo-holo ho itšeha ka nakoana) le ho ntlafatsa ho tiea ha tšusumetso.Cobalt tšepe e phahameng ka ho fetisisa e ka etsoa lisebelisoa tse sa tšoaneng, tse ka sebelisetsoang ho khaola lisebelisoa tse thata tsa mochine ka phello e ntle.Ka lebaka la ts'ebetso e ntle ea ho sila, e ka etsoa lisebelisoa tse rarahaneng, tse sebelisoang haholo linaheng tse ling.Leha ho le joalo, Chaena e haelloa ke lisebelisoa tsa cobalt, 'me theko ea tšepe ea cobalt e theko e boima, hoo e ka bang makhetlo a 5-8 ho feta a tšepe e tloaelehileng ea lebelo le phahameng.
Ka hona, China e hlahisitse tšepe ea aluminium e lebelo le holimo.Likarolo tsa tšepe e phahameng ea aluminium ke W6Mo5Cr4V2Al (eo hape e tsejoang e le 501 steel), W6Mo5Cr4V5SiNbAl, W10Mo4Cr4VAL (eo hape e tsejoang e le 5F6 steel), joalo-joalo, le aluminium (Al), silicon (Si), niobium (Nb) ke lintho tse ka sehloohong. e eketsoa ho ntlafatsa boima ba mocheso le ho hanyetsa ho roala.E loketse lisebelisoa tsa Chaena, 'me theko e tlaase.Boima ba kalafo ea mocheso bo ka fihla ho 68HRC, 'me boima ba mocheso le bona bo botle.Leha ho le joalo, mofuta ona oa tšepe o bonolo ho oxidize le decarburize, 'me polasetiki ea eona le ho sila li fokola hanyane, tse ntseng li hloka ho ntlafatsoa.
Nako ea poso: Feb-24-2023