Foda shafi line al'amura MDF foda shafi
Layin rufin foda ya tabbatar da zama mafi mahimmancin mahimmanci don samun MDF mai inganci foda kayan shafa. Abin baƙin ciki ga ƙananan kamfanoni masu rufin ƙarfe na ƙarfe, ba zai yiwu ba don samun babban kayan kwalliyar MDF foda a cikin tsoffin layin foda na karfe.
Mafi mahimmancin layin murfin foda shine fasahar tanda fasahar tanda fenti narkewa. Idan ana yin maganin foda na thermal curing. Abin da ya kamata a tuna shi ne ƙananan ƙarancin zafin jiki na MDF. Don haka, ana buƙatar tsara tanda ta yadda za a iya rarraba zafinsu daidai gwargwado; in ba haka ba, zafi ba za a rarraba a fadin substrate surface kamar aluminum. Koyaya, lokacin dumama akan MDF, dole ne a tabbatar da rarraba yanayin zafi iri ɗaya
Mun kawai amfani da wannan saboda ƙarancin ƙarancin zafin jiki na MDF. Kamar yadda aka ambata a baya, foda yana narkewa kuma yana ƙarfafawa a yanayin da ya dace. Wannan zafin jiki ya fi yawa fiye da yadda MDF zai iya ɗauka. Duk da haka, lokacin da foda ya yi zafi da hasken infrared, foda da saman allon da sauri ya kai ga zafin jiki na narkewa da ƙarfafawa. Saboda jinkirin da ake yi na thermal conductivity na hukumar, cibiyar zafin jiki har yanzu tana da ƙasa kaɗan, da ƙasa da yanayin zafin da ake narke gabaɗayan foda da ƙarfi. Sabili da haka, an rage yawan damuwa na thermal a cikin jirgi na MDF ba tare da lalacewa ba
Za mu iya ganin cewa tanda biyu da aka gabatar a sama sune maganin zafi da kuma UV curing narke curing, wanda bai dace da murfin foda na MDF ba. Na al'ada duk-foda thermal curing da MDF dumama daukan lokaci mai tsawo don isa 150-160 digiri saboda low thermal conductivity na MDF. A sakamakon haka, foda ba ta cika warkewa ba kuma MDF ya lalace. Sauran UV curing, ya zuwa yanzu domin cimma daidaitaccen rarraba UV tsanani da kashi, a lokaci guda mataki na curing na daban-daban. launuka, daban-daban foda shafi kauri. Saboda haka, UV curing bai riga ya yi nasarar amfani da misalin MDF foda shafi. Duk da haka, ana amfani da maganin UV don MDF foda shafi na m foda tushen yadudduka na gani (ba a cikakken bayani a cikin wannan misali).
Aikace-aikacen nasara don narkewa da warkarwa na kayan kwalliyar MDF foda shine tanda infrared. Kalubalen shine samar da bayyanar IR iri ɗaya zuwa saman MDF, gami da gefuna. Abin farin ciki, tanda infrared na zamani suna da babban matakin radiation iri ɗaya. Hoto na 6 shine taswirar rarraba zafin jiki wanda aka auna ta sama, tsakiya da ƙananan na'urori masu auna zafin jiki na tanda infrared MDF. Rarraba zafin jiki a saman MDF ya bambanta kaɗan kaɗan, kuma yanayin zafin jiki bai wuce 15 ° F ba
Wurin da aka ƙera da kyau na IR na warkewa yana nuna canjin zafin jiki a ƙasa 15 ° F daga sama zuwa ƙasa na MDF
Don samun kyakkyawar murfin foda, dole ne a auna rarraba zafin jiki a cikin tanda kafin a fara murfin foda. Yi la'akari da saka idanu ba kawai a wurin da ke saman ba, har ma a kusa da saman MDF, ciki har da gefuna. Ya kamata a daidaita yanayin tanda don guje wa bambance-bambancen zafin jiki tsakanin wurare da suka wuce iyaka, kamar ƙasa da 15°F. Hoto 7 shine rabe-raben zafin jiki guda biyu a cikin bangarori a da b. Hoto 7a shine tanda infrared mai daidaitawa; ana gyara firikwensin a wurare daban-daban akan farfajiyar MDF, gami da gefuna. Za mu iya ganin cewa rarraba zafin jiki a kan MDF surface ne sosai uniform.
Babu shakka, tanda MDF tare da saita yanayin zafin jiki sama da 75 ° F ba za su cimma aikin shafan foda iri ɗaya ba. A wasu lokuta, ko da daidaitattun rarraba zafin jiki ba za a iya samu ba saboda ƙarancin fasaha a cikin tanda. A wasu lokuta, an saita tanda da aka tsara da kyau a daidai zafin jiki. Wadannan yanayi suna haifar da gaskiyar cewa kada a yi amfani da kayan kwalliyar foda a cikin samarwa kuma a yawancin lokuta suna haifar da gazawar MDF foda.
A kan girman da aka bayar (ciki har da gefuna), narke - matsakaicin zafin jiki na tanda, tattaunawa mai kyau, da tsauraran dokoki kafin yin kowane yanke shawara tare da masana'anta. Da zarar an shigar da tanda, saitin layin samarwa dole ne a inganta shi ta hanyar ma'aunin bayanin zafin jiki da ci gaba da lura da bayanin martaba yayin samarwa. Wannan zai tabbatar da cewa ingancin murfin foda yana cikin ƙayyadaddun bayanai.
Foda shafi line al'amura MDF foda shafi