Vacuum plating cracking phenomenon

Vacuum plating cracking phenomenon

Moulding ntawm hluavtaws resins rau lub tshuab nqus tsev plating (ABS, PS, PP, PC, thiab lwm yam) nyob rau hauv ntau yam ntaub ntawv yuav ua rau txawv degrees ntawm deformation, thiab lub deformation yuav adversely cuam tshuam adhesion thiab tawg. Xws li cov kab nrib pleb tsuas yog tshwm sim hauv cov yas yas kub, thiab qhov ua rau tuaj yeem yog kev ntxhov siab sab hauv thaum molding. Txawm hais tias tib cov ntaub ntawv tseem nyob ntawm cov txheej txheem molding thiab molding txoj kev, nws kuj tshwm sim nyob rau hauv tib txoj kev, feem ntau nyob rau hauv lub protruding qhov chaw. Qhov tshwm sim no tuaj yeem hloov kho los ntawm kev siv cov kuab tshuaj tsis muaj zog. Txawm hais tias nws tuaj yeem daws qee qhov teeb meem, nws tuaj yeem txo cov thermal deformation kub ntawm cov khoom, thiab ua kom cov cua sov kom yooj yim rau kev ntxhov siab. Cov khoom siv yas molded yuav tsum siv tus neeg sawv cev tso tawm thaum lub sijhawm txhaj tshuaj. Hom kev tso tawm no ua rau cov xim tsis yog nplaum, tsis muaj gloss, tsis zoo adhesion, thiab fogging. Muab qhov tsis zoo rau kev pleev xim.

Qhov laj thawj yog vim li cas lub tshuab nqus tsev plating yog ib qho yooj yim ua rau atomization

 

 

 

<1>Tsis txaus ziab ntawm cov roj hauv paus (nws yuav ua rau cov roj saum toj kawg nkaus)

 

<2>Residual stress ntawm cov khoom (tsuas yog protrusions)

 

<3>Kev cuam tshuam ntawm kev tso tawm tus neeg sawv cev

 

<4>Kev cuam tshuam ntawm plasticizers

 

<5>Thaum lub txheej yog nyias nyias

 

<6>Tsis tsim nyog ziab tej yam kev mob rau lub ntsej muag roj

 

<7>Oxidation overlapping hom, tsis txaus cua ncig, thiab lwm yam.

 

<8>Thaum cov av noo siab heev

 

<9>Cov dej ntsiab lus ntawm diluent yog siab dhau

Nqus electroplating hluav taws xob cua sov raj PVD tu

 

PVD tu yog tshem tawm cov roj, xeb, plua plav, thiab lwm yam ntawm lub workpiece los ntawm cov tshuaj los yog (thiab) lub cev txoj kev los xyuas kom meej tias lub workpiece tau zoo txheej adhesion thiab du ntau lawm. Kev ntxuav yog ib qho tseem ceeb ntawm cov txheej txheem ua ntej PVD txheej, thiab nws tseem yog txheej txheem tseem ceeb tshaj plaws hauv PVD txheej txheej. Yog tias muaj teeb meem nrog kev tu, txheej txheej ntau lawm yuav tsum tau qeeb, txheej txheej txheej yuav raug cuam tshuam, lossis muaj teeb meem nrog txheej txheej adhesion. Ua rau cov neeg siv khoom tsis txaus siab thiab kev them nyiaj, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm cov peev txheej tsis tshua muaj peev xwm ntawm cov khoom siv txheej txheej, kev ntxuav cov teeb meem, muaj kev pheej hmoo ntau dua rau saum toj no.

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