Kuna ganin wannan tambayar ta tashi sosai a cikin ƙayyadaddun bayanai da RFQs. Kowa yana son fil mai tauri kuma yayi kyau, sau da yawa yana ƙayyadaddun tukwane mai launin tutiya kamar guda ɗaya, gamawa mara kyau. Gaskiyar ta fi nuanced. Wannan suturar shuɗi, rawaya, ko baƙar fata ba fenti kawai ba ne; Layer ne mai jujjuyawar chromate akan zinc, kuma dorewansa ya rataya akan abubuwa goma sha biyu da mutane ke yawan kau da kai. Ba wai kawai game da sa'o'in fesa gishiri a kan takardar bayanai ba.

Bambancin Mahimmanci: Launi Yayi Daidai da Aiki

Yawancin masu siye, har da wasu injiniyoyi, suna ganin launi a matsayin ƙarewa. Za su nemi buɗaɗɗen zinc fil suna tunanin launin da kansa yana ba da juriya na lalata. Wannan shine tarkon farko. Launi shine samfurin tsari na chromate-blue yawanci chromate ne na iridescent, baƙar fata yana iya zama chromate baki, da sauransu. Garkuwa na ainihi shine kauri na tushen zinc Layer, wanda aka auna a cikin microns, da ingancin hatimin chromate. Na ga fil masu kyau, launin shuɗi mai zurfi sun gaza da wuri saboda ajiyar zinc ya kasance sirara kuma mai laushi, ko kurkura chromate ya gurɓace. Launi ya yi daidai har sai da tsatsa ta yi fure a ƙasa.

Sannan akwai substrate. Dorewar igiyar fil tana farawa da dadewa kafin sakawa. Idan kuna samar da fil daga ƙarancin daraja, waya mara tsabta tare da rashin lahani, plating ɗin zai haɓaka waɗannan lahani, ba ɓoye su ba. Mun koyi wannan hanya mai wuya shekaru da suka wuce akan tarin clevis fil don kayan daki na waje. Takaddun bayanai sun yi kira don ƙare zinc baki. Sun yi kyau a cikin akwatin, amma a cikin watanni shida a cikin yankin bakin teku, an shafe su da farin tsatsa da ramukan lalata. Bayan mutuwar mutum ya nuna batun ba shine plating din ba ne kawai, amma ingancin kayan da bai dace ba daga mai siyar da sandar waya. Plating kawai ya biyo bayan kwandon karfen da ke ƙarƙashin ƙasa.

Gudanar da tsari shine komai. Matakan tsaftacewa na riga-kafi-degreasing, pickling acid-suna da shakka sun fi mahimmanci fiye da tankin plating kanta. Duk wani saura mai ko sikelin oxide yana hana mannen zinc daidai. Na tuna ziyartar masana'antar fastener, kamar Handan Zitai Fastener Manufacturing Co., Ltd. a Yongnian, Hebei-wannan yanki shine babban cibiyar samar da kayayyaki. Kuna iya ganin bambanci tsakanin layi. Wadanda suka fi dacewa sun kasance masu tsaftataccen tsaftataccen mataki da kuma wankewa sosai. Layukan masu rahusa za su gajarta zagayowar kurkura. Sakamakon? Fitunan da suka wuce gwajin feshin gishiri mai sauri na sa'o'i 24 amma zasu nuna gazawar maki bayan wasu zagayowar zafi ko rauni mai laushi.

Inda Ake Yin Gwajin Dorewa

A cikin duniyar gaske, igiyar fil ba ta zaune a cikin dakin gwaje-gwaje na tsaka tsaki. Ana sarrafa shi, shigar da shi, ƙila yana fuskantar juzu'i, fallasa ga sinadarai, ko hasken UV. Juriyar abrasion babban abu ne. Wannan Layer na chromate yana da bakin ciki, sau da yawa kawai ɓangarorin micron. Idan aikace-aikacenku ya ƙunshi fil ɗin da ake zamewa a ciki da waje akai-akai, wannan saman mai launi mai ban sha'awa na iya lalacewa da sauri, yana fallasa zinc ɗin hadaya sannan kuma ƙarfen tushe. Don irin waɗannan lokuta, ƙaramin zinc mai kauri tare da chromate bayyananne ko rawaya (wanda ya zama ɗan kauri) na iya wuce bakin ciki, chromate na ado, koda kuwa baƙar fata yana da ƙimar feshin gishiri mafi girma a cikin gwaji a tsaye.

Fitar da sinadarai wani kisa ne na shiru. Ka yi tunanin taruka kusa da ɗakunan baturi, ko a cikin injina inda ake amfani da mayukan mai ko tsaftacewa. Wasu masu tsabtace alkaline na iya cire suturar chromate daidai. Muna da akwati tare da fil da aka yi amfani da su a cikin madaidaicin firikwensin mota. Sun kayyade igiya mai shuɗi mai ruwan tutiya don kariyar lalata. Ginin taron ya yi amfani da wani nau'in mai tsabtace masana'antu akan sashin ƙarshe. A cikin makonni, shudin shudin ya juya ya zama mara kyau kuma ya bushe. Matsalar ita ce rashin daidaituwar pH. Fim ɗin chromate bai tsaya tsayin daka ba a cikin takamaiman yanayin sinadarai. Gyaran ba shine mafi kyawun sabulun zinc ba, amma canzawa zuwa wani nau'in sinadarai na chromate (wani nau'in wuce gona da iri maimakon hexavalent) wanda ya fi ƙarfin sinadari don wannan saitin.

Sa'an nan kuma ƙara hydrogen embrittlement. Don fitilun ƙarfe masu ƙarfi (sama da ~ 40 HRC), tsarin sarrafa wutar lantarki na iya gabatar da hydrogen a cikin ƙarfe, yana mai da shi gatsewa kuma mai saurin fashewa a ƙarƙashin kaya. Wannan ba batun dorewa ba ne na kwaskwarima; gazawar aiki ce. Duk wani mashahurin masana'anta da ke mu'amala da fil masu tauri dole ne ya haɗa da tsarin yin burodi bayan-plating don fitar da hydrogen. Yana ƙara farashi da lokaci, kuma wani lokaci ana ƙididdige shi ta hanyar masu ba da kayayyaki suna yanke sasanninta. Koyaushe tambaya idan an haɗa yin burodi don sassa masu ƙarfi. Ba abin tattaunawa ba ne.

Misalin Handan da Kasuwancin Kasuwanci

Yin aiki tare da masu kera ƙara a wurare kamar gundumar Yongnian, kuna ganin cinikin a cikin ainihin-lokaci. Kamfanin kamar Handan Zitai Fastener Manufacturing (zaka iya samun zangon su a https://www.zitaifaseners.com) an saita shi don ma'auni, yana daidai ta manyan hanyoyin haɗin kai. Amfanin su shine daidaito, aiki mai girma. Domin ma'auni fil mai launin zinc-plated aikace-aikace-tunanin kayan daki na ciki, hanyoyin haɗin kai marasa mahimmanci, kayan lantarki na mabukaci-suna iya isar da samfur mai inganci mai tsada, mai inganci. Dorewa zai yi kyau ga mahalli na cikin gida mara kyau.

Amma don aikace-aikace masu mahimmanci ko masu tsauri, kuna buƙatar shiga zurfi. Yana da game da ƙayyadaddun cikakkun bayanai: kauri na zinc (misali, 8-12μm min), nau'in chromate (misali, chromate baƙar fata don ɗanɗano mafi kyawun lalata, iridescent don kayan ado), da kuma bayan-plating sealant ko topcoat. Ee, bayyanannen suturar kwayoyin halitta akan platin zinc na iya haɓaka haɓakar abrasion da juriyar sinadarai. Yana ƙara wani mataki da farashi, amma yana canza rayuwar sashin a fagen. Yana da bambanci tsakanin fil don abin wasan yara da fil don dacewa da bene na ruwa.

Binciken gazawa shine mafi kyawun malamin ku. Mun taɓa samo wani nau'i na faranti mai launin shuɗi mai launin shuɗi don mai kera kayan aikin noma. Rahotannin filin sun zo na tsatsa mai tsanani bayan kakar wasa guda. Binciken dakin gwaje-gwaje ya nuna cewa Layer chromate ba shi da haɓaka, kusan babu shi a cikin tabo. Rawanin ya kasance rini. Tushen dalili? Wani gajiyar wanka mai chromate mai kawo kaya yana ƙoƙarin mikewa. Darasi: aminta amma tabbatar. Gwajin ɓangare na uku akan samfuran bazuwar daga batches samarwa inshora ne mai arha. Kada ka dogara ga takardar shedar niƙa kawai.

Don haka, Menene Hukuncin Dorewa?

Yana da sharadi. An zartar da kyau zinc-plated fil shaft tare da madaidaicin jujjuyawar chromate yana da ɗorewa isa ga ɗimbin aikace-aikace. Yana ba da kariya mai kyau na lalata hadaya da juriya mai kyau. Ƙarshen launi yana ba da shinge na asali da fa'ida mai kyau. Amma iyakokinsa a bayyane suke: abrasion akai-akai, acid mai karfi ko alkalis, yanayin zafi mai zafi, da ci gaba da nutsar da ruwan gishiri zai ci nasara da shi.

Idan kuna buƙatar ƙarin, kun tashi zuwa plating na inji (mafi kyau ga sifofi masu rikitarwa, ƙarancin haɓakawa), ko sutura kamar geomet ko dacromet, ko ƙarshe, bakin karfe. Amma ga farashi, fil ɗin da aka yi da zinc yana da wuya a doke shi. Makullin shine sarrafa tsammanin da ƙayyade daidai. Kada ka rubuta blue zinc kawai. Ƙayyade darajar kayan tushe, ƙarfin ɗaure, ƙaramin kauri na zinc, tsarin chromate (misali, ISO 4042, ASTM B633 Nau'in II), da duk wani magani da ake buƙata kamar yin burodi ko rufewa.

A ƙarshe, karko ba dukiya ce ta launi ba. Yana da wani dukiya na dukan masana'antu sarkar-daga waya niƙa zuwa kafa, zafi magani, plating sunadarai, da kuma sarrafa tsari. Fin daga mai ƙira mai ladabi tare da cikakkun bayanai na iya ɗaukar shekaru. Wani fil mai kama da kama daga kantin lax ba zai iya kaiwa ga lokacin rani mai ɗanɗano ba. Bambancin yana cikin bayanan da ba ku taɓa gani ba har sai ya gaza.