Dacromet Coating Bolts – Cikakken Jagora ga Fasahar Rufin Zinc-Aluminum Flake don Fasteners 

1. Menene Dacromet?

Kamfanin Amurka Diamond Shamrock (daga baya MCI, sannan NDS / Doerken MKS) ya haɓaka Dacromet a ƙarshen 1960s. Asali an ƙirƙira shi don magance gazawar haɓakar hydrogen a cikin na'urori masu ƙarfi masu ƙarfi, tun daga lokacin ya zama ma'aunin abin da aka sani na rigakafin lalata, wanda aka ƙayyade a ƙarƙashin ISO 10683, ASTM B695, da ka'idodin ƙasa daban-daban (GB/T 18684 a China).

Mabuɗin Halaye

Tsarin da ba na lantarki: Ana amfani da Dacromet ta hanyar tsoma-spin shafi, ba electroplating. Babu wutar lantarki da ke wucewa ta sassan, yana kawar da samar da hydrogen da haɗarin ɓarna mai alaƙa.

Shafi na tushen flake: Rufin ya ƙunshi ƙananan zinc da flakes na aluminum (20-60 nm lokacin farin ciki) wanda ya mamaye kamar shingles na rufin, yana haifar da shinge mai yawa, mai yawa.

Siriri da uniform: Matsakaicin kauri na shafi shine 4-10 µm - bakin ciki isa don adana dacewan zaren da juriya mai girma, sabanin kauri mai tsoma galvanizing.

Mai yarda da muhalli: Dacromet na zamani ba shi da chromium hexavalent (Cr⁶⁺), saduwa da RoHS, REACH, da ELV (Ƙarshen-Na-Life Vehicle).

Mai jure zafi: Rufin inorganic yana jure yanayin yanayin sabis na ci gaba har zuwa 250 ° C, yana mai da shi dacewa da injin injin da madaidaicin madaidaicin.

2.Mabudin Amfani

Mafi girman juriya na lalata: 500-1,200 hours na tsaka tsaki gishiri fesa (NSS) ta ISO 9227 - 5-10 sau fiye da na al'ada zinc plating (96-240 hours).

Sifirin hydrogen embrittlement: Hanyar da ba ta da wutar lantarki ta kawar da shayarwar hydrogen, yana sa Dacromet ya zama abin da aka fi so don maɗaukaki masu ƙarfi (Grade 8.8-12.9) inda aka ƙuntata ko dakatar da electroplating.

Kyakkyawan suturar uniformity: Rubutun tsoma-tsalle yana rufe wuraren zama, ramukan makafi, da hadaddun geometries fiye da na lantarki ko tsoma galvanizing. Ƙunƙarar zaren da tushen sa suna samun daidaitaccen ɗaukar hoto.

Mai kauri mai kauri, juriya da aka kiyaye: A 4-10 µm, Dacromet baya tsoma baki tare da haɗin gwiwar zaren ko alaƙar tashin hankali. Ba a buƙatar sake danna goro ba, ba kamar maɗaurin galvanized mai zafi ba.

Juriya mai zafi: Rubutun yumbu mai kama da inorganic yana kiyaye kaddarorin sa na kariya a yanayin zafi har zuwa 250 ° C (ci gaba) da 300 ° C (na ɗan gajeren lokaci), wanda ya wuce kayan kwalliyar kwayoyin halitta.

Yarda da muhalli: Kyauta na Cr⁶⁺, mai yarda da RoHS, REACH, da umarnin ELV. Ruwa na tushen ruwa yana da ƙarancin fitar da VOC idan aka kwatanta da madadin tushen ƙarfi.

Kyakkyawan mannewa da juriya: Rufin flake ɗin da aka haɗe da kemikal yana ƙin chipping, taɓowa, da kuma lalacewa fiye da plating na al'ada.

3. Kwatanta da Sauran Rufi

Teburin da ke ƙasa yana kwatanta Dacromet tare da zaɓi biyu na yau da kullun na abin rufe fuska - zinc plating electroplated da galvanizing mai zafi:

Gishiri mai feshi ta ISO 9227 NSS. Haɗarin ɓarna hydrogen ya shafi na'urorin lantarki da aka yi da lantarki Grade 10.9 da sama.

4. Aikace-aikace

Mota: Abubuwan da aka haɗa na injin, na'urorin haɗi na chassis, tsarin birki, sassan dakatarwa, da kayan aikin ƙarƙashin jiki. An kayyade Dacromet ta manyan OEMs (VW, Toyota, GM, Ford) don ƙarfin ƙarfi mai ƙarfi (Grade 8.8-10.9) inda dole ne a guji haɓakar hydrogen.

Gina & kayan more rayuwa: Haɗin tsarin ƙarfe, kayan aikin gada, masu ɗaurin ramin rami, da ƙaƙƙarfan haɗin ginin da aka fallasa ga mahalli mai ɗanɗano da lalata.

Lantarki & ƙarfi: Tsuntsaye hasumiya mai watsawa, kayan aikin sauya kayan aiki, da madaidaitan ma'auni na lantarki suna buƙatar dorewa na waje na dogon lokaci.

Titin jirgin ƙasa & wucewa: Na'urorin haɗi na jujjuyawa, abubuwan da aka haɗa, da kayan aikin sigina da kayan aikin sigina waɗanda aka fallasa ga gishirin ƙanƙara da lalata yanayi.

Marine & bakin teku: Dock da kayan aikin tashar jiragen ruwa, na'urorin dandali na ketare, da kayan aiki a cikin yanayi mai cike da gishiri (wanda aka haɗa da babban rigar siti don iyakar kariya).

Ƙarfin iska: Hasumiya flange bolts, nacelle hardware, da ginshiƙi bolts na bukatar shekaru da yawa na kariya-free lalata kariya.

Kayan Aiki & HVAC: Masu haɗa wuta, abubuwan da aka gyara tanderu, da kayan aikin naúrar waje inda ake buƙatar juriya na zafi da kariyar lalata duka biyun.

Takaitawa

Dacromet tabbatacce ne, fasaha mai fa'ida mai fa'ida don lalata kayan aikin ƙarfe. Tsarinsa na musamman na zinc-aluminum flake, wanda aka yi amfani da shi ta hanyar tsarin dip-spin mara amfani, yana ba da juriya na 500-1,200 na gishiri ba tare da embrittlement na hydrogen ba - yana sanya shi zaɓin zaɓi don babban ƙarfin kusoshi a cikin motoci, gini, da sassan makamashi. Tare da bakin ciki, fim ɗin rigar, ƙa'idodin muhalli, da kyakkyawan juriya na zafi, Dacromet ya haɗu da rata tsakanin ƙarancin ƙarancin zinc plating da bakin karfe mai tsada, yana ba da ma'auni mafi kyau na aiki, aminci, da farashi don buƙatar aikace-aikacen fastener.