Ukuqatshelwa kweebhleyidi zecermet 01

Kwisitshixo sokusika, isixhobo sokusika sisoloko sibizwa ngokuba ngamazinyo okuvelisa amashishini, kunye nokusebenza kokusika kwesixhobo sokusika enye yezinto eziphambili ezibonisa ukusebenza kakuhle kwayo kokuvelisa, iindleko zokuvelisa kunye nomgangatho wokucubungula.Ke ngoko, ukukhetha okuchanekileyo kwesixhobo sokusika kubalulekile.
Isixhobo sesixhobo sibhekisela kwizinto eziphathekayo zenxalenye yokusika isixhobo.
Ngokukodwa, ukhetho olufanelekileyo lwezixhobo zesixhobo luchaphazela le miba ilandelayo:
Imveliso yomatshini, ukuqina kwesixhobo, ukusetyenziswa kwezixhobo kunye neendleko zomatshini, ukuchaneka komatshini kunye nomgangatho womphezulu.
Ngokuqhelekileyo kukholelwa ukuba izixhobo zesixhobo ziquka i-carbon tool steel, i-alloy tool steel, i-high-speed steel, i-alloy eqinile, i-ceramics, i-cermets, idayimani, i-cubic boron nitride, njl.

I-Cermet yinto edibeneyo

Cermet

Igama lesiNgesi elithi Cermet elithi cermet okanye i-ceramet yenziwe nge-ceramic (i-ceramic) kunye nesinyithi (isinyithi).I-Cermet luhlobo lwezinto ezidibeneyo, kwaye inkcazo yayo yahluke kancinane kumaxesha ahlukeneyo.

(1) Ezinye zichazwa njengemathiriyeli eyenziwe ngeeseramikhi kunye nesinyithi, okanye imathiriyeli edityanisiweyo yeeseramikhi kunye neentsimbi ezenziwe ngomgubo wesinyithi.

I-American ASTM Professional Committee iyichaza ngolu hlobo: i-heterogeneous composite material eyenziwe ngesinyithi okanye ialloy kunye nesigaba esinye okanye ngaphezulu se-ceramic, esokugqibela sithatha malunga ne-15% ukuya kwi-85% yeqhezu lomthamo, kunye nobushushu bokulungiselela, ukunyibilika phakathi izigaba zetsimbi kunye nezeramic zincinci.

Izinto ezenziwe ngentsimbi kunye ne-ceramic ekrwada zineengenelo ezithile zentsimbi kunye neekeramics, ezinje ngokuqina kunye nokumelana nokugoba kwangaphambili, kunye nokumelana nobushushu obuphezulu, amandla aphezulu kunye nokumelana ne-oxidation yale yokugqibela.

(2) I-Cermet yi-carbide ene-cemented kunye ne-titanium-based particles hard as the main body.Igama lesiNgesi le-cermet, i-cermet, yindibaniselwano yamagama amabini i-ceramic (i-ceramic) kunye nesinyithi (isinyithi).I-Ti (C, N) ikwandisa ukuxhathisa ukunxiba kwebakala, isigaba sesibini esinzima sonyusa ukuchasana nokuguqulwa kweplastiki, kwaye umxholo we-cobalt ulawula ukuqina.Iicermets zonyusa ukuxhathisa ukunxiba kwaye zinciphisa utyekelo lokunamathela kwisixhobo sokusebenza xa kuthelekiswa ne-sintered carbide.

Kwelinye icala, ikwanamandla aphantsi okucinezelayo kunye nokunganyangeki kakuhle kwe-thermal.Iicermets zahlukile kwii-alloys eziqinileyo kuba iikhomponenti zazo ziyinxalenye ye-WC system.Iicermets ubukhulu becala zenziwe ngeTi-based carbides kunye nenitrides, kwaye zikwabizwa ngokuba yiTi-based cemented carbides.

Iicermets ngokubanzi zikwabandakanya ialloys edityanisiweyo edityanisiweyo, iialloyi eziqinileyo, kunye nezixhobo zedayimani ezibotshelelwe ngentsimbi.Isigaba se-ceramic kwi-cermets yi-oxide okanye i-refractory compound enendawo ephezulu yokunyibilika kunye nobunzima obuphezulu, kwaye isigaba sesinyithi sisona sibalulekileyo soguqulo kunye ne-alloys yazo.

I-Cermet luhlobo lwezinto ezidibeneyo, kwaye inkcazo yayo yahluke kancinane kumaxesha ahlukeneyo.

Iicermets zizixhobo zokusika isinyithi

izinto ezibalulekileyo

Iicermets ziyaphuculwa

Ngokuqhelekileyo kukholelwa ukuba izixhobo zesixhobo ziquka i-carbon tool steel, i-alloy tool steel, i-high-speed steel, i-carbide ene-cemented, i-cermet, i-ceramics, i-diamond, i-cubic boron nitride, njl.

Ngama-1950, ii-cermets ze-TiC-Mo-Ni zaqala ukusetyenziswa njengezixhobo zesixhobo sokusika i-high-speed precision cut of steel.

Ekuqaleni iicermets zenziwa kwi-TiC kunye ne-nickel.Nangona inamandla aphezulu kunye nobunzima obuphezulu obuthelekiswa ne-cemented carbide, ukuqina kwayo akubi kakhulu.

Kwiminyaka ye-1970, iicermets ezisekelwe kwi-TiC-TiN, iicermets ezingenayo i-nickel zaphuhliswa.

Le cermet yanamhlanje, kunye ne-titanium carbonitride Ti (C, N) iinqununu njengeyona nto iphambili, inani elincinci lesigaba sesibini esinzima (Ti, Nb, W) (C, N) kunye ne-tungsten-cobalt-rich binder, iphucula isinyithi. Ukuqina kweekeramics kuphucule ukusebenza kwazo kokusika, kwaye ukusukela ngoko iicermets ziye zasetyenziswa kakhulu kuphuhliso lwezixhobo.

Ngokumelana nokushisa okukhulu, ukuxhatshazwa kokugqoka kunye nokuzinza kweekhemikhali, izixhobo ze-cermet zibonise iingenelo ezingenakuqhathaniswa kwintsimi yokusika i-high-speed cut and cutting hard-to-machine materials.

I-Cermet + PVD yokwambathisa iphucula ukuxhathisa ukunxiba

kwixesha elizayo

Ukusetyenziswa kweemela ze-cermet kwiinkalo ezahlukeneyo kuyanda imihla ngemihla, kwaye akungabazeki ukuba imboni ye-cermet iya kuphuhliswa ngakumbi.

Iicermets zinokuthi zigqunywe ngePVD zokuphucula ukuxhathisa kokunxiba.