Ukuhlukaniswa kanyeSqhubekaAmathuluzi Okusika I-Carbide Ehlanganisiwe

Ingxenye yokuqala

Ithuluzi iyithuluzi elibalulekile ekusikeni ukucutshungulwa, noma ngabe ithuluzi lomshini elijwayelekile, noma ithuluzi lomshini wokulawula izinombolo (NC), isikhungo somshini (MC) kanye nohlelo lokukhiqiza oluguquguqukayo (FMC), kumele luthembele ethuluzini ukuqedela ukusika. inqubo. Ukuthuthukiswa kwamathuluzi kunomthelela oqondile ekuthuthukiseni ukukhiqiza kanye nekhwalithi yokucubungula. Impahla, isakhiwo kanye nejometri yizici ezintathu ezinquma ukusebenza kwethuluzi, lapho ukusebenza kwethuluzi kudlala indima ebalulekile.

Njengengxenye ebalulekile yezinto zamathuluzi, i-carbide enosimende idlala indima engenakushintshwa ekucutshungulweni kwesimanjemanje. I-carbide enosimende iwubulukhuni obuphezulu, i-refractory metal carbide (WC, TiC, njll.) ye-micron oda yempushana yobukhulu, ehlanganiswe ne-Co, Mo, Ni kanye neminye imikhiqizo ye-binder powder metallurgy, lapho izinga lokushisa eliphezulu lokuqukethwe kwe-carbide lidlula izinga eliphezulu. -Speed ​​steel, izinga lokushisa elivumelekile lokusika lifinyelela ku-800 ~ 1000 ℃, ubulukhuni bokushisa obujwayelekile be-HRC89 ~ 93, 760℃ ubulukhuni be-HRC77 ~ 85, ukusika isivinini kufika ku-100 ~ 300m/min, okungaphezulu kakhulu kwensimbi enesivinini esikhulu, impilo iphindwe izikhathi eziningana kuya ezikhathini eziningi zensimbi enesivinini esikhulu, kodwa amandla nokuqina kungu-1/30 ~ 1/8 kuphela wensimbi enesivinini esikhulu, ikhono eliphansi lokumelana nokushaqeka nomthelela. Manje isiphenduke enye yezinto ezisetshenziswayo eziyinhloko.

I-International Organisation for Standardization (ISO) ihlukanisa i-carbide yokusika amathuluzi ngezigaba eziyisithupha:

1. Uhlobo P

Ihlanganiswe ne-WC, Co kanye no-5% ~ 30% TiC, eyaziwa nangokuthi i-tungsten titanium cobalt carbide, ibanga YT5, YT14, YT15, YT30, lapho okuqukethwe kwe-TiC kungu-5%, 14%, 15%, 30%, okuhambisanayo Okuqukethwe kwe-Co kungu-10%, 8%, 6%, 4%, ubulukhuni HRA91.5 ~ 92.5. Tamandla akhe okugoba angama-900 ~ 1400MPa. Okuqukethwe kwe-TiC kunyukile, okuqukethwe kwe-Co kwehlile, ubulukhuni nokumelana nokugqokwa kwanda, kodwa ukuqina komthelela kwehle kakhulu. Lolu hlobo lwe-alloy lunokuqina okuphezulu nokumelana nokugqoka, ukunamathela okuhle nokumelana nokusabalalisa kanye nokumelana ne-oxidation. Kodwa amandla okugoba, ukusebenza kokugaya kanye nokwehla kwe-thermal conductivity, ukushisa okuphansi kwe-brittleness, ukuqina akulula. Ifanele impahla yensimbi yokusika isivinini esikhulu. Uma kuphakeme okuqukethwe kwe-Co kwengxubevange, kuba ngcono amandla okugoba kanye nokuqina komthelela, okulungele ukugoqa. Okuqukethwe kwe-Co kuncishisiwe, ubulukhuni, ukumelana nokugqoka kanye nokumelana nokushisa kuyanda, futhi kulungele ukuqedwa. Ukuhlobana phakathi kwe-elementi ye-Ti ku-alloy kanye ne-elementi ye-Ti ku-umsebenzi-ucezuizokhiqiza into engathi sína yethuluzi lokunamathela, elizothuthukisa ukuguga kwamathuluzi esimweni sokusika izinga lokushisa eliphezulu kanye nesici esikhulu sokungqubuzana, futhi alifaneleki ukucubungula insimbi engagqwali ne-titanium alloy.

2. Uhlobo K

Ihlanganiswe ne-WC ne-Co, eyaziwa nangokuthi i-tungsten cobalt tungsten carbide, amabanga avame ukusetshenziswa YG6, YG8, YG3X, YG6X, aqukethe i-Co ka-6%, 8%, 3%, 6%. Ukuqina HRA89 ~ 91.5, ukugoba amandla 1100 ~ 1500GPa. Isakhiwo sehlukaniswe okusanhlamvu okumahhadla, okusanhlamvu okuphakathi nendawo kanye nokusanhlamvu okuhle. Ngokuvamile (njenge-YG6, YG8) yesakhiwo sokusanhlamvu esimaphakathi, i-fine grain carbide (efana ne-YG3X, YG6X) equkethe inani elifanayo le-Co kunokuqina okusanhlamvu okumaphakathi,yayoukumelana nokugqoka kuphakeme kancane, amandla okugoba futhiubulukhunikukhonakancane kancane. Lolu hlobo lokuqina kwe-alloy, ukugaya, ukuqhutshwa kokushisa kuhle, kufanelekile ukucubungula izinto ezithambile..

3. Uhlobo M

Ngokwesisekelo se-WC, i-TiC ne-Co, i-TaC(noma i-NbC) yengezwa ekubunjweni, ukwengeza i-TaC(NbC) ku-YT ingathuthukisa amandla ayo okugoba, amandla okukhathala, ukuqina komthelela, ubulukhuni bokushisa okuphezulu, amandla nokumelana ne-oxidation, ukuguga. ukumelana nokunye. Amabanga asetshenziswa kakhulu i-YW1 ne-YW2. Ingasetshenziselwa ukucubungula insimbi eyinsimbi, izinsimbi ezingezona ayoni nensimbi, kodwa futhi ingacubungula ingxubevange yokushisa okuphezulu, insimbi engagqwali nokunye okunzima.-to-izinto zokwakha.

4. Uhlobo H

Ikakhulukazi isetshenziselwa ukusika izinto eziqinile eziphakeme, njengensimbi eqinile, insimbi ephonsiwe ebandayo nokunye. I-Cubic boron nitride PCBN isohlwini lwe-Class H.

5.Uhlobo S

Isetshenziselwa ukusika izinto ezikwazi ukumelana nokushisa,super-alloys, njll.

6.Uhlobo H

Isetshenziselwa ukusika izinsimbi ezingenayo insimbi. I-PCD yedayimane ye-Polycrystalline ifakiwe ekilasini N.

Kulesi sihloko, ngishilo izinhlobo eziyisithupha ze-carbide enosimende ngokuhlukanisa amathuluzi okusika, ingxenye elandelayo, kuzoba nezinhlobo ezintsha ze-carbide enosimende ukuphetha, sicela unikeze’t ukhohlwe ukuhlola ingxenye elandelayo uma unentshisekelo.

I-ZZBETTER ikhiqiza imikhiqizo ye-TC/WC enesipiliyoni seminyaka engaphezu kwe-10, xhumana nathi uma unesidingo mayelana nezinto ze-tungsten carbide noma imikhiqizo ebheke kanzima. Linda uphenyo lwakho, sithembekile nakanjani.