Yuav tsum xaiv cov khoom dab tsi rau manufacturing extrusion tshuab pwm?
Tshuab moulds yuav tsum muaj tsawg dua cov ntaub ntawv thiab muaj kev xaiv dav dua.Qhov xaiv cov ntaub ntawv rau tshuab tuaj pwm yuav tsum coj mus rau hauv tus account yam xws li thermal conductivity, lub zog, txhaws kuj, corrosion kuj, polishing, nqi, thiab siv cov yas thiab ntau lawm. , plastics uas ua rau cov neeg tsis muaj zog (xws li PVC, polyacrylonitrile, polyformaldehyde, thiab lwm yam.), cov khoom siv corrosion resistant siv los ua moulds los yog lub tsho tiv no cov kab pwm nrog corrosion-resistant co.Yuav muaj ntau yam ntaub ntawv rau kev muag tshuab moulds .
(1) txhuas.Aluminium yog ib qho khoom siv thaum ntxov thiab dav siv rau extrusion tshuab moulds.Aluminium muaj zoo thermal conductivity, zoo machinability thiab ductility, low density, low hardness thiab yooj yim hnav.Aluminium alloys yuav hnav zoo dua.Rhuas aluminium yog tsawg zais, yog li ntawd, inetays hauv pob tsuas yog ua los ntawm cov hlau los sis tooj liab beryllium
Alloy manufacturing.The pab cuam lub neej ntawm txhuas pwm yog txog 100,000 rau 200,000 zaug.Aluminium yog ntxeem tau thiab qee zaum infiltrates me me ntawm yas yaj, uas cuam tshuam cov tsos ntawm lub tshuab molding khoom.Qhov no yuav daws tau los ntawm kev thov sealant rau cov pwm kab noj hniav, tab sis qhov no yuav txo qhov kev hloov hluav taws xob ntawm cov khoom thiab cov pwm phab ntsa.
(2) tooj liab qab alloy.Cu-beryllium alloy yog ib hom khoom siv feem ntau siv hauv tshuab pwm. Nws muaj cov thermal conductivity, hardness, hnav ua haujlwm, corrosion kuj thiab mechanical toughness.Qhov disadvantages yog cov nqi siab, txom nyem txhua yam kev ua haujlwm (sij hawm ua haujlwm yog li ib feem peb ntev dua txhuas), thiab qhov ceev yog li peb zaug uas ntawm txhuas , uas ntxiv zuj zus rau tus nqi (tooj liab beryllium ib ntim ntawm ib lub ntim twg txog li ntawm 6 zaug ntawm txhuas) .Txhob beryllium alloy yuav ua kom sov kho kom siab (nce mus rau HRC40) .Cov txhuas beryllium alloy yuav machined, nrum thiab kub extrusion kom molds.The hardness ntawm tooj liab beryllium alloy uas muaj siab beryllium (xws li, 1.8% ~ 2.0%) yog siab dua, thiab kev ua txhua yam yuav tsum tau txais kev kho.Ua ua cov pwm tsis zoo, siv tooj liab beryllium alloys nrog ib sab beryllium cov ntsiab lus, xws li 1.65% .Bearllium alloy tooj liab yog feem ntau siv hauv cov txha hniav hauv kev tsim thiab siv tau nrog txhuas moulds.Some (tshwj xeeb tshaj yog rau corrosive plastics) tag nrho txheej ntawm tshuab pwm muaj kev chim e ntawm tooj liab beryllium alloy.Piv txwv li, cov tooj hlau beryllium alloy tsis yuav corroded los ntawm hydrogen chloride ua los ntawm PVC ua. Nws tseem yuav tiv thaiv cov dej kom tsis txhob ntub dej hauv cov cua txias thiab txo kom cov cua sov hloov tau yooj yim dua.Lub tooj liab beryllium alloy mould yog kho yooj yim kho los ntawm kev siv vuam los yog inlaying. Lub tsev teev ntuj muaj teeb meem rau tib neeg kev noj qab haus huv. Tiv thaiv beryllium hmoov av yog teeb meem rau lub ntsws. Nws tseem xav tias nws yog ib tug carcinogen.In addition rau lub tooj liab beryllium alloy, Ni / Si / CU, Cr / CU thiab aluminium / bronze alloys kuj muaj rau manufacturing tshuab pwm. Lub thermal conductivity ntawm thawj ob lub phom sij yog kwv yees li 2 thiab 3 zaug ntawm lub tooj liab beryllium alloy, feem.
(3) lub steel.Steel yog tsuas yog siv nyob rau hauv lub tshuab molding ntawm PVC thiab engineering plastics. Qhov no yog vim tsis tshua muaj siab, hnav tsis muaj zog thiab toughness ntawm hlau.Qhov ntsiab disadvantage ntawm hlau yog tsis thermal conductivity, uas yuav tsum tau compensated los ntawm qhov system txias thiab txias txias kub thiab ntws xeev.Hauv corrosive plastics (xws li PVC ) yuav tsum yog ua los ntawm cov xim tsis muaj steel.Teluj pwm tuaj yeem tsim los ntawm kev ua haujlwm, txias extrusion, casting los yog vuam (rau cov pwm loj) .Puas kev ua haujlwm ntawm cov hlau pwm tuaj yeem ncav 10 lab lub sij hawm, yog li thaum qhov ntau ntawm cov tshuab molding khoom loj, hlau yog ib hom khoom uas zoo dua.Tshuaj (xws li cov cuab yeej siv hluav taws xob) kuj yog siv los ua qhov tshuab pwm ntawm cov khoom ua rau hnav, xws li pob txha caj dab, rub pas nrig, daim ntawv qhia sab, coj lub tes tsho thiab cov ntaub ntawv ua ke. seem yuav tsum tau hardening ntawm lub steel.But feem ntau hais lus, hlau yog siv tsawg dua nyob rau hauv manufacturing tshuab pwm.
(4) lwm yam ntaub ntawv.
Zinc alloy.Nws muaj cov thermal conductivity thiab cov nqi tsawg. Nws yuav siv rau casting loj tuaj pwm los yog tuaj pwm nrog cov duab tsis sib xws.Zinc alloy tsis nyuab dua aluminium alloy, yog li hlau los yog tooj liab beryllium alloy yog siv los ua cov roj hauv inlay.Zinc kuj yuav ua tau nrog txhuas los yog tooj liab, uas muaj qhov loj dua kev ruaj ntseg tab sis tsis muaj corrosion kuj.
Zinc nickel copper alloy.Koj yuav siv tau cov tshuab ua pwm, nws thermal conductivity ntawm tooj liab beryllium alloy thiab txhuas alloy, tab sis, nyob rau hauv zoo li thermal conductivity, nws hardness yog qis dua tooj liab los ntawm alloy.
(Xws li polyacrylate, epoxy) .Txoj cai siv casting tsawg tus nqi pwm, pwm nrog ntau lub sij hawm ntau los yog cov pwm coj mus kuaj. Lawv yuav tau ntim nrog cov hmoov hlau los yog iav fiber ntau los txhim kho qhov chaw ruaj ntseg thiab cov thermal conductivity.