Ngokwemithombo yoshishino, intengiso yehlabathi jikelele isantya esiphezulu sentsimbi (HSS) izixhobo zokusika kulindeleke ukuba zikhule ziye ngaphezulu kwe-10 yezigidigidi ngo-2020. UJackie Wang-Jikelele Umphathi weShanghai Histar Metal, ujonga ukuba kutheni i-HSS ihlala iyindlela ethandwayo, iingoma ezahlukileyo ezikhoyo kunye nendlela imathiriyeli etshintshe ngayo ukuba ishishini elitshintsha ngokukhawuleza.

Ngaphandle kokhuphiswano olukhulayo ukusuka kwi-carbide eqinileyo, i-HSS iyaqhubeka ithandwa ngabavelisi ngenxa yokuxhathisa kwayo kakhulu ukunxiba kunye nokuqina okuhle kunye neepropathi zokuqina. Izixhobo zokusika ze-HSS zilunge kakhulu kwimveliso yemveliso apho ubunzima besixhobo, ubuchule, imveliso kunye neendleko zezixhobo zibaluleke kakhulu kumsebenzisi wokugqibela. Kungoko isadlala indima enkulu ekusebenzeni kakuhle nangokuthembekileyo kwezinto ezininzi.

Kwakhona, kugxilwe ngoku kumgangatho olungileyo wemveliso, ohlangabezana neemfuno zesicelo somthengi ngexabiso elingenaxabiso, ibonakalisa umtsalane kwimeko yezoqoqosho ekhoyo ngoku.

Ukuxhasa ukwanda kwebango lehlabathi HSS, Ukusika abavelisi bezixhobo benze izinto ezibanzi kweli candelo. Oku kubandakanya ukwanda kotyalo-mali kungekuphela nje kuphuhliso lwemveliso kodwa nakwimisebenzi yophando kunye nophuhliso, ekhokelele kwizixhobo ze-HSS zithembeke ngakumbi ngokunciphisa inani leziphene, iindleko zemveliso ezisezantsi kunye namaxesha amafutshane akhokelayo. Ukongezwa kwee-substrates eziphuculweyo, kubandakanya i-powder metallurgy kunye ne-coilings kuye kwaba luncedo ekuphuculeni ukusebenza.

I-Shanghai Histar Metal ibonelela iphepha elinesantya esiphezulu, ibha ejikelezileyo kunye nebha ethe tyaba. Ezi zinto zisetyenziselwa ukuqhelanisa, ukucima izixhobo, ukubuyisela kwakhona iitampu, iitephu kunye nokusika.

Ukwenziwa kwe-HSS

Uhlobo lweHSS oluqhelekileyo lubonisa i-chromium (4%), i-tungsten (malunga ne-6%), i-molybdenum (ukuya kuthi ga kwi-10%), i-vanadium (ejikeleze i-2%), i-cobalt (ukuya kuthi ga kwi-9%) kunye nekhabhoni (1%). Iindidi zebakala ezahlukeneyo zixhomekeke kumanqanaba ohlukeneyo ezinto ezongeziweyo.

IChromium iphucula ubuchule bokuqina kwaye ithintele ukukala. I-Tungsten ibonelela ngokusika okukhulu kunye nokuchasana nokubila, kunye nokuphucula ubunzima kunye namandla aphezulu obushushu. I-Molybdenum-imveliso evelisiweyo yobhedu kunye nemveliso ye-tungsten- ikwaphucula ukusika ukusebenza kakuhle kunye nobulukhuni, kunye nokuchasana nokubila. I-Vanadium, ekhoyo kwizimbiwa ezininzi, yenza iicarbides ezinzima kakhulu zokuxhathisa ukunxiba okungaginyisi mathe, inyusa ubushushu obuphezulu ukunxiba amandla kunye namandla, kunye nokugcinwa kobulukhuni.

I-Cobalt iphucula ukuxhathisa kobushushu, ukugcinwa kobunzima kunye nokuphucula ukuhambisa ubushushu, ngelixa i-khabhoni, inyusa ukuxhathisa kokunxiba kwaye inoxanduva lobunzima obusisiseko (malunga ne-62-65 Rc). Ukongezwa kwe-5-8% ye-cobalt engaphezulu kwi-HSS iphucula amandla kwaye inxibe ukuxhathisa. Ngokwesiqhelo, uqheliso olwenziwe ngokudibanisa ii-cobalt ezingaphezulu zisetyenziswa kwimisebenzi ethile yesicelo.

Izinto eziluncedo

Izixhobo ze-HSS zinokuxhathisa ukungcangcazela, nokuba loluphi na uhlobo lwesixhobo somatshini, nokuba ukuqina kulahlekile ngokuhamba kwexesha kwaye nokuba iimeko zomsebenzi ziyangqinelana. Inokuthintela ukothuka ngomatshini kwinqanaba lezinyo kwimisebenzi yokugaya kunye nokujamelana neemeko zokuthambisa ezinokubangela utshintsho kwi-thermal.

Kwakhona, enkosi kumandla endalo e-HSS, abavelisi besixhobo banokuvelisa imiphetho yokusika ebukhali kakhulu. Oku kwenza kube lula kumatshini izinto ezinzima, unikezela umsebenzi omncinci wokwenza i-austenitic insimbi ezingenasici kunye ne-nickel alloys, kwaye inika umgangatho ophezulu womhlaba kunye nokunyamezelana kwamalungu omatshini.

Njengoko isinyithi sinqunyiwe kwaye singakrazuki, sinika ubomi obude besixhobo ngamaqondo asezantsi ashushu. Ikwafuna imikhosi yokusika esezantsi, ethi ekugqibeleni ithethe ukusetyenziswa kwamandla okuncinci kwisixhobo somatshini. Ukusuka kwindawo yezixhobo zobomi, i-HSS isebenza kakuhle kakhulu xa kusenziwa izicelo zokusika.

Isishwankathelo

Kwiminyaka apho abasebenzisi bafuna izixhobo ezinokuthenjwa, ezingaguquguqukiyo, eziguquguqukayo ngexabiso elingenaxabiso, isantya esiphezulu sentsimbi iseyinto elungileyo kwizicelo ezininzi. Kananjalo, isenokuzibamba kwindawo yentengiso ngokuchasene nezinto ezincinci kunye nezobuchwephesha eziphambili.

Ukuba kukhona, HSS sele iminyaka emininzi isomelela ngokuziqhelanisa neebhatyi ezintsha, uhlengahlengiso lwayo kunye nokongeza itekhnoloji entsha, konke oko kunceda ekugcineni indawo yayo njengezinto ezibalulekileyo kwishishini lokusika isinyithi.

Icandelo lokucheba icandelo lokuhlala lisoloko liyindawo enokhuphiswano kwaye HSS lihlala liyinto ephambili ekunikezeleni abathengi into ebisoloko iyimfuneko ebalulekileyo: ukhetho olulungileyo.

Isinyithi seMbali yeShanghai

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