Rufewa ba tare da sirri ba
Ziyarar wannan wuri ba shakka ba za ta faranta wa mai ƙafa huɗu rai ba. Yin amfani da sabis na kantin fenti, saboda an tattauna wannan batu a cikin wannan labarin, koyaushe yana haɗuwa da farashi mai yawa. Koyaya, don ƙarshen ya sami barata ta ƙarshe ta sakamakon ƙarshe, dole ne a aiwatar da daidaitattun ayyuka na mutum ɗaya, daga yashi saman jikin don fentin shi, yin amfani da fenti a hankali kuma ya ƙare tare da bushewa.
Brick, ko watakila grinder?
Abu na farko da za a yi kafin amfani da aikin fenti shine a hankali yashi saman da aka zaɓa na jiki. A yawancin shagunan fenti, ana amfani da sanders orbital a matakin farko na machining, kuma ana yin kammalawa (polishing) tare da toshe na musamman da abrasives na tushen ruwa. A halin yanzu, masana sun gamsu cewa ana iya amfani da shredders a wannan mataki na biyu na sarrafawa. Koyaya, kar a manta da bin ƙa'idodin ƙa'idodin asali. Daya shine a yi amfani da injin niƙa kawai da aka ƙera don ƙwararrun ayyukan zanen, zai fi dacewa tare da diski na 150mm (don ƙananan gyare-gyare 75mm fayafai za a iya amfani da su). Bugu da ƙari, injin nama dole ne a sanye shi da abin da ake kira farawa mai laushi da kuma yin motsi na oscillatory a cikin haɓaka na 2,5 zuwa 3 mm, don daidaitawa mai kyau. Amfanin yin amfani da irin wannan nau'in na'ura akan tubalan gargajiya da abrasives na tushen ruwa suna da yawa. Da fari dai, lokacin niƙa yana raguwa a matakai biyu na mashin ɗin harka. A lokaci guda kuma, yana da ma, wanda ke guje wa bayyanar tabo daga ƙugiya a wurare masu wuyar isa. Bugu da ƙari, yin amfani da sander yana kawar da hulɗar fenti da fenti tare da ruwa (kamar yadda yake tare da abrasives da aka yi amfani da su a al'ada), wanda ya ba ka damar samun gashin karshe mafi kyau.
Tare da dama shawa
Bayan an shirya substrate da kyau, ana amfani da varnish a saman sa. Makullin a cikin wannan yanayin shine amfani da nozzles masu dacewa a cikin bindigogin feshi da matsi na fesa daidai a kowane mataki na aikin. Wannan yana da mahimmanci musamman a lokacin da ake amfani da ruwa- ko acrylic-tushen fari. Ya isa a faɗi cewa yin amfani da bututun ƙarfe wanda shine kawai 0,1-0,2 mm ya fi girma sakamako a cikin dozin ko makamancin microns mai kauri na varnish. Saboda amfani da nozzles da suke da girma kuma a lokaci guda rashin kuskuren raguwa a cikin matsa lamba na lacquer, akwai matsaloli tare da bushewa na lacquer da aka yi amfani da shi, da kuma matsaloli tare da maganin da ya dace. A cikin matsanancin yanayi, kauri mara kyau na iya bayyana a saman, wanda dole ne a cire shi, don haka sake farawa gabaɗayan aikin zanen.
Na gargajiya ko tare da hita mai haske?
Mataki na ƙarshe na kowane mataki na sarrafa varnish shine bushewa mai kyau. Wannan yana da mahimmanci musamman duka a mataki na yin amfani da putty da kuma bayan yin amfani da gashin gashi. Busasshiyar tushe mai kyau (karanta: zafi da juriya mai ƙarfi) yana hana ƙarewar daga tabarbarewar tabarbarewar (kamar “karya” ko ɓarna) daga baya. Ana iya yin bushewa ta hanyar gargajiya, watau. barin motar na sa'o'i da yawa ko da yawa a cikin rumfar fesa. Duk da haka, wannan bayani ne mai cin lokaci da rashin inganci, musamman a yanayin zanen ƙananan saman. Saboda wannan dalili, yana da kyau a yi amfani da abin da ake kira gajeriyar raƙuman ruwa. Dukansu na'urori masu sauƙi da wadataccen kayan aiki suna samuwa a kasuwa. Na farko daga cikinsu ba su da na'urori masu auna zafin jiki, don haka wajibi ne a yi amfani da pyrometers na hannu, godiya ga abin da za ku iya sarrafa cikakken zafin jiki na busasshiyar wuri. Koyaya, yana da fa'ida sosai don amfani da radiators tare da firikwensin zafin jiki, saboda suna ba da "aiki na atomatik" na tsarin bushewa ba tare da buƙatar sarrafa zafin jiki akai-akai ba. A cewar masana, ƙima mai girma da yawa na iya haifar da saurin "rufe" na Layer varnish da aka yi amfani da shi. Mafi muni kuma, lacquers na ƙarfe ko lu'u-lu'u ba za su yaɗu da kyau ba. A gefe guda, ƙananan zafin jiki na bushewa yana ƙara lokacin ƙafewar saman fentin. A sakamakon haka, lokacin bushewa na iya ma ninka sau biyu.
