Cov khoom siv ntawm extruder screws txawv thiab nyob ntawm qhov tseem ceeb ntawm cov khoom siv thiab cov khoom siv rau kev ua.
Cov khoom siv feem ntau thiab siv dav rau cov ntsia hlau yog 38CrMoAlA (ib chromium-molybdenum- aluminium alloy steel). Tsis tas li ntawd, nyob ntawm qhov kev xav tau ntawm kev ua tau zoo, muaj ntau yam khoom siv siab - muaj.
| Hom khoom | Hom Qib | Ntsiab nta | Cov Khoom Siv Tseem Ceeb |
| Cov khoom siv | 38CrMoAlA | Nws muaj kev ua tau zoo tag nrho thiab, tom qab kev kho nitriding, nthuav tawm qhov siab ntawm qhov tawv tawv (txog HV900 lossis siab dua), nrog rau hnav thiab tiv thaiv corrosion, ua rau nws cov khoom siv dav tshaj plaws rau cov ntsia hlau. | Nws yog qhov tsim nyog rau kev ua cov khoom siv extrusion ntawm feem ntau cov plastics thiab yog hom ntau tshaj plaws nyob rau hauv ob- tes ua lag luam. |
| Hnav heev-resistant / Reinforced | W6Mo5Cr4V2 (siab{4}}ceev steel) | Kev nyuaj siab heev (txog HRC 60 lossis siab dua) thiab hnav tsis kam, ua rau nws tsim nyog rau kev tuav cov khoom abrasive lossis siab -cov ntaub ntawv hnav | Extruders tshwj xeeb tsim los rau kev ua cov yas uas muaj cov iav fiber ntau, cov pob zeb hauv av (xws li calcium carbonate), thiab lwm yam ntaub ntawv zoo sib xws. |
| Corrosion heev-resistant | 9Cr18MOV | Nws muaj kev tiv thaiv corrosion zoo heev thiab tuaj yeem tiv taus corrosive gases tsim los ntawm decomposition ntawm cov ntaub ntawv (xws li PVC) thiab nplaim retardants. | Rau kev ua cov yas corrosive xws li PVC, los yog nyob rau hauv cov xwm txheej uas corrosive additives xws li nplaim retardants yuav tsum tau ntxiv thaum lub sij hawm tsim khoom. |
| Extended -lub neej | Bimetal / Txheej Kev Kho Mob | Ntawm cov txheej txheem substrates (xws li 45 # steel), siv cov hnav- thiab corrosion- tiv taus alloy txheej (xws li npib tsib xee-raws li alloys lossis tungsten carbide) los ntawm kev txau lossis hauv ob sab phlu nce nqi tab sis txuas ntxiv kev pab cuam lub neej. | Tsim nyog rau qhov loj - nplai, siab - siv cov khoom siv tas mus li, qhov twg cov cuab yeej ruaj khov thiab lub neej ntev yog qhov tseem ceeb tshaj plaws. |
| Nkag mus -level | Tsis muaj . 45 steel | Nws yog pheej yig thiab yooj yim rau tshuab, tab sis nws hnav thiab corrosion kuj tsis zoo. | Qhov no feem ntau pom muaj nyob rau hauv extruders siv rau thaum ntxov-theem ntau lawm los yog cov uas ua cov qib qis-qib, tsis yog{2}} corrosive plastics; Thaum kuaj xyuas cov cuab yeej siv, kev saib xyuas tshwj xeeb yuav tsum tau them rau qhov kev hnav thiab tsim kua muag. |
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias txawm tias cov khoom siv ntsia hlau nws tus kheej yog hnav- tiv taus, tus nqi hnav tseem yuav nce ntxiv thaum ua cov ntaub ntawv uas muaj cov khoom ntim xws li iav fiber ntau lossis calcium carbonate.