Laminate Quality Problem Analysis

Qhov teeb meem zoo ntawm laminate yog ib qho kev xav txog ntawm cov teeb meem zoo ntawm cov resin, gluing thiab nias. Txawm hais tias nias yog cov txheej txheem tseem ceeb kawg hauv kev tsim laminate, qhov zoo ntawm cov khoom siv ua tiav ua tiav hauv cov txheej txheem dhau los yuav muaj kev cuam tshuam ncaj qha rau qhov zoo ntawm laminate. Yog li ntawd, cov teeb meem zoo ntawm laminates yuav tsum tau txheeb xyuas kom meej txhawm rau txhawm rau nrhiav cov laj thawj tseeb thiab siv cov kev ntsuas zoo los daws lawv lub sijhawm los txhim kho qhov zoo ntawm laminates.

(1) Nto pitting Qhov tshwm sim no feem ntau tshwm sim nyob rau hauv cov ntawv nyias, feem ntau yog cov nplaum nplaum, tshwj xeeb tshaj yog cov khoom nto nrog cov kua nplaum me me, cov ntsiab lus tsis tshua muaj dej soluble, thiab cov dej tsis zoo ntawm cov resin. Qhov thib ob yog qhov tsis sib xws thaum nias. Qee zaum, lub siab tsis tshua muaj vim lub sijhawm preheating ntev. Yog li ntawd, thaum npaj cov ntawv nyias nyias, yuav tsum tau them nyiaj tshwj xeeb rau qhov tseeb tias cov ntsiab lus ntawm cov nplaum nplaum yuav tsum tsis txhob qis dhau, thiab cov ntaub ntawv zoo yuav tsum tau siv. Yog hais tias tsuas yog ib lub phaj nyias nyias vim qhov kev txwv ntawm cov khoom tshwj xeeb, cov ntawv thaub qab yuav tsum tuab dua thiab yuav tsum tau hloov ntau zaus, lub sij hawm ua ntej yuav tsum tsis txhob ntev dhau, thiab lub siab yuav tsum tau ceev. Tsis tas li ntawd, qhov kub ntawm lub phaj kub yuav tsum tsis txhob siab dhau thaum cov kua nplaum ntws.

(2) Qhov tshwm sim ntawm qhov tsis sib xws ntawm qhov chaw thiab corrugation feem ntau tshwm sim nyob rau hauv daim ntawv nplaum nrog cov ntsiab lus loj thiab cov solubility tsawg. Vim qhov tsis muaj fluidity ntawm cov resin, qhov tshwm sim ntawm cov kua nplaum tsis sib xws thaum lub sij hawm gluing yog yooj yim xav txog ntawm lub laminate. Tam sim no uneven thiab stuttering phenomenon. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau qhov sib npaug ntawm cov kua nplaum tswj thaum gluing. Thaum npaj cov ntaub ntawv, ua tib zoo tig txhua cov ntaub ntawv upside down mus rau 180 degree kom ua rau cov kua nplaum tsis sib xws los ntawm gluing, kom qhov chaw saum npoo tuaj yeem txhim kho.

(3) Laminate cracking Qhov tshwm sim tawg feem ntau tshwm sim nyob rau hauv cov ntawv tuab thiab cov ntaub boards. Hauv cov xwm txheej hnyav, cov laminates nrog lub thickness ntau dua 5 hli yuav tawg. Lub epoxy phenolic iav ntaub board tsis yooj yim rau tawg, uas yog vim muaj zog adhesion ntawm cov kua nplaum. Kev tawg ntawm laminate muaj ntau yam ua rau cov resin adhesion. Thaum cov khoom laus yog sandwiched ntawm laminate, lub laminate yuav tawg. Yog li ntawd, cov khoom siv ntawm cov nplaum nplaum yuav tsum tau ua, thiab cov khoom siv laus yuav tsum raug xaiv thiab tsis tuaj yeem muab sib xyaw rau hauv qhov khoob. . Tsis tas li ntawd, yog tias daim kab xev nplaum me me dhau lawm thiab tsis sib npaug, thiab lub siab qis dhau los yog lub siab qeeb dhau, nws yooj yim ua rau tawg.

(4) Cov xim nyob nruab nrab ntawm qhov chaw yog tsaus, thiab ib puag ncig yog dawb. Qhov no feem ntau yog vim cov nplaum nplaum muaj cov volatiles loj, thiab cov volatiles nyob ib puag ncig yooj yim khiav tawm thaum lub sij hawm preheating, thiab cov residual volatiles nyob rau hauv nruab nrab yog loj, yog li ib puag ncig yog dawb thiab nruab nrab xim yog tsaus. Qhov no tuaj yeem raug txiav txim siab los ntawm qhov tsis muaj zog los ntawm qhov tseeb tias qhov kev tiv thaiv hluav taws xob nyob rau hauv nruab nrab ntawm lub rooj tsavxwm yog qis dua qhov kev tiv thaiv hluav taws xob ntawm ntug dawb ntawm lub rooj tsavxwm. Yog li ntawd, nws yog ib qho tsim nyog los tiv thaiv cov nplaum nplaum los ntawm absorbing noo noo, tshwj xeeb tshaj yog yog hais tias lub soluble resin cov ntsiab lus ntawm cov nplaum nplaum loj heev, cov khoom uas tsis muaj molecular generated thaum kub nias yuav nce raws li, thiab qhov tshwm sim no yuav hnyav dua nyob rau lub sij hawm no. . Kev ntsuam xyuas tau pom tias qhov hnyav molecular tsawg muaj qhov cuam tshuam ntau dua li cov dej noo. Kev xyaum tau ua pov thawj tias qhov teeb meem tsis hloov pauv ntawm daim kab xev nplaum yog tsawg dua 4 feem pua ​​thiab tsis tsim cov npoo dawb. Tswj preheating hauv qab 6 feem pua ​​tuaj yeem tsim tsis muaj cov npoo dawb lossis cov npoo dawb heev. Ntau tshaj 6 feem pua ​​​​ntawm cov npoo dawb yog qhov loj dua.

(5) Nto fracturing Qhov no feem ntau yog vim cov resin nias ceev heev thaum ntws thiab substrate yog crushed. Yog li ntawd, tus naj npawb ntawm lub sij hawm nias thiab lub siab ntawm cov nplaum nplaum yuav tsum tsis txhob siab dhau thaum lub sij hawm ntws ntawm cov kua nplaum. Yog tias chav tsev siab ntawm epoxy phenolic iav ntaub board ntau tshaj 7MPa (70kgf / cm²), cov ntaub iav yuav raug crushed.

(6) Qhov sib txawv ntawm qhov sib txawv ntawm qhov saum npoo av nplaum cov khoom siv nws tus kheej yog qhov loj, uas ua rau cov kua nplaum tsis sib xws lossis tsis muaj lub tshuab ua kua nplaum, uas ua rau cov kua nplaum ntau dhau ntawm ib qho chaw ntawm cov nplaum nplaum, tsis sib xws, thiab tsis sib xws ntawm cov cua sov. ntawm lub phaj kub thaum lub sij hawm preheating. , Cov ntsiab lus soluble resin yog loj, thiab lub siab ceev heev thaum cov resin ntws. Yog li ntawd, lub thickness sib txawv ntawm lub substrate yuav tsum tsis txhob loj heev, cov kua nplaum ntawm daim kab xev yuav tsum yog uniform, thiab cov ntsiab lus ntawm soluble resin yuav tsum tau txo. Thaum npaj cov khoom, xyuam xim rau tig ib feem ntawm cov nplaum nplaum rau ntawm 180 degree, thiab lub siab yuav tsum tsis txhob ceev heev thaum lub sij hawm preheating. Ceev faj kom tshem tawm cov dej condensed los ntawm cov kav dej thiab lub phaj kub.

(7) Loj thickness sib txawv ntawm laminate Qhov sib txawv thickness sib txawv yog tias ntug yog tuab thiab nruab nrab yog nyias, uas yog feem ntau tshwm sim los ntawm unevenness ntawm ntug ntawm cov hlau phaj. Yog li ntawd, cov phaj hlau yuav tsum tau ua tib zoo khaws cia, thiab cov ntug corrugated yuav tsum tau kho ua ntej siv. Qhov sib txawv loj kuj muaj qhov tshwm sim uas ib sab yog nyias, uas feem ntau yog tshwm sim los ntawm qhov tseeb tias ib sab ntawm daim kab xev qub thiab lwm sab yog kev sib tw, los yog qhov kub ntawm lub phaj kub yog siab ntawm ib sab thiab qhov kub thiab txias. nyob rau sab nraud yog qhov qis, thiab qhov qaij ntawm lub phaj kub yog tshwm sim. Yog li ntawd, thaum npaj cov ntaub ntawv, xyuam xim rau tig ib feem ntawm cov nplaum daim kab xev upside down mus rau 180 degree, thiab lub inlet thiab qhov hluav taws xob cov kav dej yog teem nyob rau hauv ib tug staggered yam. Thaum preheating, xyuam xim rau ntws cov phaj kub thiab cov dej hauv cov kav dej, thiaj li tiv thaiv lub phaj kub los ntawm qhov kub thiab txias ntawm ib sab thiab tsis kub ntawm sab nraud. Txheeb xyuas cov phaj kub qaij nquag thiab kho kom raws sijhawm. Lub thickness sib txawv kuj muaj ib tug tuab tuab thiab nyias ntug nyob rau hauv nruab nrab, uas yog feem ntau yog tshwm sim los ntawm kev nyuaj siab thiab deformation nyob rau hauv nruab nrab ntawm lub kub phaj uas tau siv rau lub sij hawm ntev. Lub phaj kub yuav tsum tau muab kev pabcuam.

(8) Sheet slipping tawm Thaum nias, daim kab xev plam tawm ntawm lub phaj hlau, tshwj xeeb tshaj yog thaum lub epoxy phenolic iav daim ntaub raug nias, uas feem ntau hu ua "cov khoom siv khiav". Muaj ntau qhov laj thawj rau cov khoom siv khiav, xws li cov ntaub nplaum ntau dhau thiab kev sib tw, tus nqi ntawm cov nplaum ntawm ob sab tsis sib xws, cov khoom npaj tsis sib xws, cov khoom siv tsis raug, lub siab yog ceev heev thiab siab dhau thaum preheating cov kua nplaum ntws, thiab lub zog ntawm lub phaj kub nws tus kheej tsis sib npaug. Qhov tshwm sim ntawm cov khoom siv khiav yuav tshwm sim, thiab cov khoom siv khiav yuav ua rau cov khoom sib tsoo ntawm tus kheej, uas yuav tsum tau tiv thaiv. Thaum npaj cov ntaub ntawv, tib batch ntawm daim ntawv nplaum yog siv, thiab cov kua nplaum cov ntsiab lus thiab solubility yeej ib yam. Nyob rau hauv cov ntaub ntawv ntawm khiav tawm ntawm cov khoom, lub chav yuav tsum tau muab tua kom txias, tab sis txaus siab yuav tsum tau tswj, lub slippage yuav tsum tau soj ntsuam, thiab kev kho yuav tsum tau ua tom qab stabilization, thiab maj mam nce qhov kub ntawm lub chav mus ntxiv. mus suppress.

(9) Ua rau cov hlau phaj lossis cov roj nplaum saum npoo av Qhov no feem ntau yog tshwm sim los ntawm qhov tsis tsim nyog ntawm tus neeg tso tawm, tus nqi ntawm tus neeg tso tawm sab hauv xws li zinc stearate, calcium, barium, oleic acid yog me me, lossis cov neeg tso tawm sab nraud yog wiped ntau heev Yog hais tias nws yog me me thiab tsis sib xws, nws yog ib qho yooj yim rau lo rau lub phaj steel. Yog tias tus nqi ntau dhau los yog tus neeg sawv cev tso tawm yog rubbed, nws yooj yim los tsim cov roj txaws. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum nruj me ntsis tswj qhov ntau npaum li cas ntawm cov pwm tso tawm sab hauv, thiab nws yog ib qho tsim nyog los so cov pwm tso tawm sab nraud, xws li hauv pem teb siv quav ciab, silicone roj hmab, thiab lwm yam. kom zoo, thiab nws yuav tsum tau wiped evenly tsim ib txheej nyias. . Tsis tas li ntawd, daim hlau nplaum nplaum muaj feem xyuam rau qhov zoo ntawm cov phaj steel. Qhov saum npoo tiav yog qhov tsis zoo los yog kev kho mob tsis txaus, thiab nws yooj yim los lo rau lub phaj steel.

(10) Qhov tshwm sim ntawm ntau dhau warpage ntawm laminates feem ntau tshwm sim hauv cov duab los qhia nrog lub thickness ntawm 7 ~ 15mm. Cov laj thawj rau kev ua tsov rog yog qhov nyuaj heev, xws li qhov tsis sib xws ntawm cov nplaum nplaum, cua sov thiab txias ceev thaum nias, thiab tawm qhov kub thiab txias. Siab dhau lawm, cov tswv yim sib txuam yog tsis tsim nyog, thiab lwm yam, tab sis nws feem ntau tshwm sim los ntawm kev ntxhov siab sab hauv. Yog li ntawd, kev ntxhov siab sab hauv yuav tsum tau txo qis. Piv txwv li, thaum cua sov thiab cua txias, chav dej los yog dej txias yuav tsum tau maj mam muab los tiv thaiv lub laminate los ntawm kev kub heev los yog txias. Yuav tsum muaj lub sijhawm txias txaus, uas tsis tuaj yeem ua kom luv luv arbitrarily. Thaum cov dej siab tsis txaus, lub sijhawm yuav tsum raug ncua kom tsim nyog. Cov phiaj xwm sib xws yuav tsum tau them sai sai rau cov cua kub sib txawv ntawm lub laminate, thiab sim kho cov nplaum nplaum kom ntau li ntau tau thaum npaj cov khoom siv, uas yog qhov zoo los txo qhov kev sib tsoo.

(11) Unqualified withstand voltage Lub unqualified withstand voltage yog tsuas yog rau nyias daim hlau. Vim tias cov qauv tiv thaiv hluav taws xob ntawm cov phaj nyias nyias yog siab dua li cov phaj tuab, tom qab cov txheej txheem kho cua sov raug tshem tawm, qhov kev tiv thaiv hluav taws xob ntawm cov phaj nyias feem ntau ua tsis tau raws li cov qauv xav tau. Lub zog tawg ntawm daim ntawv muaj kev sib raug zoo nrog cov volatiles ntawm daim nplaum nplaum. Kev xyaum tau ua pov thawj tias thaum cov volatiles ntawm 3020 daim kab xev yog qis dua 4 feem pua, qhov kev tiv thaiv hluav taws xob tsim nyog, cov volatiles tsis ruaj khov ntawm 4.5 feem pua ​​~ 5 feem pua, thiab tus nqi dhau 5 feem pua ​​yog qhov siab heev. Tsawg. Cov laminates uas tsis muaj peev xwm tiv taus hluav taws xob raug kho nrog kev kho cua sov, uas feem ntau ua tau zoo, tab sis qee cov laminates uas tsis tshua muaj hluav taws xob kuj tseem tsis tsim nyog los ntawm kev ua kom sov. Kev ziab khaub ncaws kub yuav tsum tau ua haujlwm ntau, yog li daim nplaum nplaum yuav tsum muab khaws cia rau hauv lub tsev muag khoom qhuav tsis ntub.