HSS, High SpeedSteel, imhando yemidziyo yandinonyanya kubata kana ndapinda muindasitiri yezvishandiso.Gare gare, takadzidza kuti simbi yekumhanya yataishandisa panguva iyoyo inofanira kunzi "yemazuva ese simbi inomhanya", uye kune zvinhu zviri nani kupfuura iyo, sealuminium high speed simbi, cobalt high speed simbi, nezvimwewo, izvo zviri pachena kuti zviri pachena. pamusoro payo maererano nekuumbwa kwealloy, kana poda metallurgy high speed simbi iyo iri pachena pamusoro payo maererano nekunyungudutsa nzira;Zvechokwadi, kunewo anonzi "low-alloy high-speed steel" nekushanda kwakaderera.
Iyo yepamusoro-yekumhanya simbi yemidziyo yemidziyo inonyanya kuve nezvikamu zviviri zvakakosha:Imwe isimbi carbide (tungsten carbide, molybdenum carbide kana vanadium carbide), iyo inopa chishandiso zviri nani kupfeka kuramba;Yechipiri ndiyo simbi matrix yakagovaniswa yakatenderedza, inoita kuti chishandiso ive nekusimba kuri nani uye kugona kutora maitiro uye kudzivirira kupatsanuka.
Inowanikwa kuti hukuru hwezviyo zvesimbi yepamusoro-soro ine simba guru pane zvinhu zvesimbi yakakwirira.Kunyangwe kuwedzera huwandu hwesimbi carbide zvimedu musimbi zvinogona kuvandudza kupfeka kuramba kwechinhu, nekuwedzera kweiyo alloy yemukati, saizi yecarbide uye huwandu hweagglomerates huchawedzerawo, izvo zvichave nemhedzisiro yakaipisisa pakuomarara. yesimbi, nekuti masumbu makuru ecarbide anogona kukurumidza kuve nzvimbo yekutanga yekutsemuka.Naizvozvo, nyika dzekunze dzakaita tsvakiridzo kare kare kuti dzitevere tsanga yakanaka yesimbi inomhanya kwazvo.
Mukupera kwema1960, iyo poda metallurgy high-speed simbi yekugadzira maitiro akabudirira kugadzirwa muSweden uye akapinda mumusika mukutanga 1970s.Iyi nzira inogona kuwedzera mamwe alloy zvinhu musimbi inomhanya-mhanya pasina kukuvadza simba, kuoma kana kugaya kwechinhu, kuitira kuti chishandiso chine kuomarara kwakanyanya, kukwirira kupfeka kuramba, kugona kutora maitiro ekucheka, uye yakakodzera kukwirira kwekucheka mwero kugadzirisa. uye kupindirana kwekucheka kugadzirisa kunogona kuitwa.Nekudaro, inosanganisa kusimba kwakanaka kwesimbi yekumhanya nekukwira kwepamusoro-soro kuramba kwecemented carbide.Nekuda kwekugovewa kwakanaka uye kwakafanana kwecarbide particles muupfu metallurgy high-speed simbi, simba rayo uye kusimba kunovandudzwa zvikuru kana zvichienzaniswa nesimbi yakajairwa-yekumhanya ine yakafanana carbide zvirimo.Neiyi mukana, poda metallurgy yakakwirira-kumhanya simbi maturusi akanyatsokodzera machining zviitiko zvine hombe yekucheka maitiro uye yakakwirira simbi yekubvisa mwero (senge flexure kucheka, kucheka kwepakati, nezvimwewo).Mukuwedzera, nokuti simba uye kuoma kwehupfu metallurgy high-speed simbi haizoregi nekuwedzera kwesimbi carbide content, vagadziri vesimbi vanogona kuwedzera huwandu hwezvinhu zvealloy kune simbi kuvandudza kushanda kwezvinhu zvekushandisa.Panguva imwecheteyo, nekuti tungsten (W) zviwanikwa zviwanikwa zvehungwaru, uye yemazuva ano simende carbides inoshandisa tungsten zviwanikwa muhuwandu hukuru, yakaderera-tungsten high-speed simbi yave kutungamira kwekumhanya-mhanya kwesimbi kutsvaga nekusimudzira.High-speed simbi ine cobalt (HSS-Co) yakagadzirwa munhamba huru kune dzimwe nyika.Gare gare, zvakazozivikanwa pasi rose kuti simbi yepamusoro-soro ine cobalt ine inodarika 2% yecobalt yemukati yaive yepamusoro-yepamusoro-speed simbi (HSSE).Cobalt inoitawo basa riri pachena mukuvandudza kushanda kwesimbi yepamusoro.Inogona kukurudzira carbides kunyungudika zvakanyanya mumatrix panguva yekudzima uye kupisa, uye kushandisa yakakwira matrix kuomarara kuvandudza kupfeka kuramba.Iyo yekumhanyisa simbi ine kuoma kwakanaka, kuomarara kwekupisa, kupfeka kuramba uye grindability.Iyo cobalt yemukati yeyakajairwa cobalt high-speed simbi munyika inowanzo 5% uye 8%.Semuyenzaniso, W2Mo9Cr4VCo8 (American brand M42) inoratidzwa ne low vanadium content (1%), high cobalt content (8%) uye heat treatment hardness ye67-70HRC.Nekudaro, nzira dzakakosha dzekurapa kupisa dzinogamuchirwawo kuwana 67-68HRC kuomarara, izvo zvinovandudza kucheka kwayo kuita (kunyanya kucheka kwepakati) uye kunatsiridza kuoma kwesimba.Cobalt high-speed simbi inogona kugadzirwa mune zvakasiyana-siyana zvekushandisa, izvo zvinogona kushandiswa kucheka zvakaoma-ku-muchina zvinhu zvine maitiro akanaka.Nekuda kwekuita kwayo kwakanaka kwekukuya, inogona kugadzirwa mumidziyo yakaoma, iyo inoshandiswa zvakanyanya pasi rese.Nekudaro, China inoshomeka zviwanikwa zvecobalt, uye mutengo wecobalt high-speed simbi inodhura, ingangoita 5-8 times yeyakajairika high-speed simbi.
Naizvozvo, China yakagadzira aluminium yakakwirira-kumhanya simbi.Magiredhi ealuminium yakakwira-kumhanya simbi ndeye W6Mo5Cr4V2Al (inozivikanwawo se501 simbi), W6Mo5Cr4V5SiNbAl, W10Mo4Cr4VAL (inozivikanwawo se5F6 simbi), nezvimwewo, uye aluminium (Al), silicon (Si), niobium (Nb) zvinhu zvakanyanya yakawedzera kuvandudza kuomarara kwekupisa uye kupfeka kusagadzikana.Inokodzera zviwanikwa zveChina, uye mutengo wakaderera.Iyo yekupisa kurapwa kuoma kunogona kusvika 68HRC, uye kuomarara kwekupisa kwakanakawo.Nekudaro, iyi mhando yesimbi iri nyore kuita oxidize uye decarburize, uye mapurasitiki ayo uye grindability zvishoma zvishoma, izvo zvichiri kuda kuvandudzwa.
Nguva yekutumira: Feb-24-2023