1. Cov khoom granularity tsis sib xws thiab hardness tsis sib xws.
Xam cov khoom xyaw nruj me ntsis raws li covresinoid sib tsoo logdaim ntawv teev cov khoom xyaw, thiab kev tshuaj xyuas yog cov txheej txheem tseem ceeb.
2. Mixed.Ua ntej sib tov thiab thaum lub sij hawm sib tov, ntxuav cov cuab yeej thiab khoom siv. Ua ntej batching, xyuas cov ntaub ntawv raw ntawm ntau yam resinoid sib tsoo log rau impurities.
3. Tsis sib xws.
Sib tov raws li lub sijhawm sib tov xav tau los ntawm cov txheej txheem. Hloov cov khoom sib tov uas hnav dhau sijhawm txhua lub sijhawm. Powdered resin cov ntaub ntawv yuav tsum tau sieved raws li qhov screen mesh tooj thiab zaus teev nyob rau hauv tus txheej txheem.
4. Cov qauv tsis sib xws thiab cov tawv tawv tsis sib xws thiab tsis sib npaug.
Kho cov dryness thiab humidity ntawm qhov sib tov kom zoo formability. Ua kev sib kis thiab khawb cov haujlwm raws li cov txheej txheem yuav tsum tau ua. Siv lub ncoo hlau ua ntej raws li cov txheej txheem yuav tsum tau tswj xyuas qhov tseeb ntawm cov xovxwm; Thaum pub mis, cov khoom siv tsis sib xws, cov khoom sib tov yog ntub heev, lossis cov khoom siv agglomerated, pub mis tsis sib xws, pwm hnav, thiab cov khoom to yog hnyav, cov pwm yuav tsum tau hloov.
5. Kev tawg ntawm lub cev molding.
Qhov kub nias kub yog siab dhau lawm, cov khoom yog txias thiab rhuab sai, qhov kub thiab txias yog tsawg heev thaum tshem cov tub ntxhais, cov tub ntxhais yuav tsum tau muab tshem tawm nyob rau hauv lub sij hawm, cov khoom raw ntawm cov resinoid sib tsoo log yog cuam tshuam los ntawm noo noo thiab deteriorates, los yog cov ntaub ntawv compounding tsis raug.
5.1 Xaus cracks. Cov khoom siv molding muaj cov yas tsis zoo thiab cov txheej txheem tshem tawm pwm tsis tsim nyog. Lub phaj hauv qab ntawm kev tsim pwm tsis sib xws los yog lub phaj rov qab yog qhov tsis sib xws.
5.2 Peripheral tawg. Lub tes tsho pwm yog hnav hnyav heev thiab skewed heev thaum tshem lub tes tsho pwm.
5.3 Aperture tawg. Lub zog ntawm qhov khoob yog qhov tsawg, qhov kev vibration yog qhov zoo heev thaum tshem tawm cov pwm, lub mandrel hnav dhau los yog lub taper me dhau, thiab qhov kev txiav txim ntawm unloading pwm tsis ua raws li cov txheej txheem kev cai.
5.4 Diagonal tawg. Qhov xaiv lub caij nplooj ntoos hlav ncoo hlau muaj qhov tsis sib xws elasticity, ua rau cov pwm sib txawv thiab raug compressed los tsim kab kab pheeb ces kaum. Kev nrawm nrawm ntawm cov cuab yeej zoo-grained abrasive yog ceev heev, lub sij hawm tu lub sij hawm luv luv, thiab pwm haum qhov sib txawv loj dhau.
5.5 Cov kev tiv thaiv kev sib tsoo saum toj no: kho qhov nrawm kom ntseeg tau tias cov khoom sib xyaw ua ke, cov cuab yeej molding thiab pwm yuav tsum tsis pub tshaj cov qauv hnav, cov qauv thiab cov ntaub qhwv yuav tsum khaws cia hauv qhov zoo, lub thickness ntawm cov ntaub qhwv yuav tsum zoo ib yam. , thiab elasticity ntawm lub caij nplooj ntoos hlav pads yuav tsum zoo ib yam. Cov txheej txheem qhia txog qhov kev txiav txim ntawm kev tshem tawm pwm.
6. Ob lub ntsej muag kawg tsis sib npaug.
Khaws qhov tseeb ntawm cov xovxwm xovxwm thiab ua haujlwm raws li cov txheej txheem kev sib tsoo log resinoid.
7. Qhov saum npoo tsis sib xws.
Cov cuab yeej ua haujlwm raug tswj xyuas nyob rau hauv qhov xav tau qhov tseeb.
8. Lub molding hardness tsis sib xws.
Thawj zaug nias yuav tsum tau kuaj xyuas, thiab tsis pub tsawg dua 30% ntawm txhua pawg ntawm cov khoom seem yuav tsum tau kuaj xyuas. Chav ntsuas qhov hnyav yuav tsum tau kuaj xyuas thiab ntsuas ntau zaus, thiab kev hloov siab yuav tsum tau soj ntsuam ntau zaus.
9. Tus choj tsis sib xws.
Cov cua txias yuav tsum sib xws; "warped" nto ntawm lub workpiece tsis muaj lub tiaj tiaj yog hu ua tus choj. Qhov no yog tshwm sim los ntawm qhov txias tsis sib xws uas ua rau cov khoom tsis sib xws los yog lub qhov cub tawg tsis sib xws. Feem ntau yog los ntawm kev sib tsoo cov log thiab cov khoom zoo-grained nyias. Nyias sib tsoo lub log tuaj yeem yooj yim tsim cov khoom pov tseg corrugated thaum lub cua txias ceev heev.
10. Blister.
Kub hardening yog tswj raws li lub hardening nkhaus ntawm cov resinoid sib tsoo log khoom specification, thiab cov compounding txheej txheem yuav tsum nruj zoo tswj; Yog hais tias qhov molding kub siab dhau los yog qis dhau, qhov kub yuav tsum tau hloov kho. Qhov kub curing yog siab dhau lawm thiab qhov kub ntawm qhov cub curing yog tsis tswj. Tus neeg sawv cev sib txuas tsis sib haum; Lub cheeb tsam ntawm lub superhard abrasive cuab tam yog convex thiab deformed los yog tag nrho cov nto swells thiab ua resinous, thiab ib txhia muaj vaub kib zoo li tawg. Ua rau:
10.1 Yog tias cov cua kub ceev dhau los yog qhov kub thiab txias hloov pauv loj, nws yog ib qho yooj yim los ua foaming thiab nthuav ntawm cov khoom uas muaj qhov loj me me, siab hardness thiab nruj qauv. Vim hais tias cov khoom no muaj ntau cov ntaub ntawv los yog muaj cov pores me me, yog tias qhov ntsuas kub tsis raug thiab cov cua kub ceev heev, cov binder yuav hnov mob hnyav, tus nqi ntawm cov teeb meem tsis hloov pauv yuav nce siab, thiab cov roj siab hauv lub cev ntsuab yuav siab, ua rau cov khoom ua npuas thiab nthuav.
10.2 Cov khoom siv molded yog sib xyaw tsis sib xws, thiab muaj cov pob txha hauv cov khoom siv los yog nws muaj ntau cov kuab tshuaj nrog cov ntsiab lus qis qis (xws li ethanol, acetone).
10.3 Vim yog qhov yuam kev hauv kev sib xyaw thiab molding txheej txheem, qhov sib txuas ntawm qhov sib txuas ntxiv, qhov hnyav ntawm chav tsev nce, lub siab nce, thiab lwm yam.
