Dacromet mai rufi Flange Bolts 

2. Fahimtar Fasahar Rufe Dacromet

Dacromet shine tushen ruwa, tsarin rufin tutiya-aluminum flake mara amfani da wutar lantarki wanda aka kera musamman don masu ɗaure, gami da ƙwanƙwasa flange mai ƙarfi. Ba kamar tsarin sarrafa wutar lantarki na gargajiya wanda ke ajiye ions ƙarfe ta hanyar wutar lantarki ba, tsarin Dacromet yana aiwatar da slurry da aka ƙera a hankali wanda ke ɗauke da flakes na zinc, flakes na aluminum, da masu ɗaure inorganic a saman murfin. Bayan aikace-aikacen ta hanyar dip-spin ko hanyoyin fesa, bolts ɗin da aka lulluɓe suna fuskantar yanayin zafi mai zafi (yawanci a kusa da 300 ° C), wanda ke juyar da ɓangarorin cikin ƙuƙƙarfan haɗin gwiwa, fim mai kariya mai nau'i-nau'i.

Sakamakon Dacromet shafi yana da bakin ciki sosai - yawanci tsakanin 6 zuwa 12 micrometers - duk da haka yana ba da juriya na lalata. Zinc da flakes na aluminium da suka mamaye suna haifar da shingen labyrinthine wanda ke rage saurin shigar danshi, oxygen, da ions masu lalata. A lokaci guda, zinc yana ba da kariya ta hadaya (cathodic) ga madaidaicin ƙarfe na ƙarfe na kulle, yayin da aluminium da abubuwan chromate suna haɓaka haɓakawa da gabaɗayan rigakafin tsatsa. Wannan tsarin kariyar injina da yawa yana ɗaya daga cikin mahimman dalilan Dacromet ya zarce plating na zinc na al'ada har ma da tsoma-tsatsa mai zafi a cikin gwaje-gwajen lalata da yawa.

Mahimmanci, saboda tsarin Dacromet ya ƙunshi ba tare da tsinkar acid ba kuma babu jigilar electrolytic, yana gabatar da babu hydrogen a cikin lattice na ƙarfe. Wannan ainihin tsarin halayen yana sa suturar Dacromet gabaɗaya hydrogen embrittlement kyauta - madaidaicin fa'ida yayin rufe manyan kusoshi na flange na sa 10.9, 12.9, ko ƙayyadaddun ASTM A490.

3. Mabuɗin Amfanin Dacromet Flange Bolts

3.1 Na Musamman Juriya na Lalata da Ayyukan Anti-tsatsa

Dacromet mai rufi flange bolts suna ci gaba da samun sama da sa'o'i 1,000 na juriya mai tsaka tsaki na gishiri (ASTM B117 / ISO 9227) ba tare da bayyanar tsatsa ba. A yawancin maki na kasuwanci, farin tsatsa shima yana jinkiri fiye da sa'o'i 240. Wannan matakin aikin rigakafin tsatsa ya zarce na daidaitattun kayan kwalliyar zinc, wanda yawanci ke nuna tsatsa a cikin sa'o'i 72 zuwa 200 a ƙarƙashin yanayin gwaji iri ɗaya. Mafi girman juriya na lalata Dacromet ya samo asali ne daga tsarin flake na musamman da aikin haɗin gwiwa na kariyar shinge, kariyar zinc ta hadaya, da wuce gona da iri.

A cikin mahalli na gaske-yanayin bakin teku, tsire-tsire masu sinadarai na masana'antu, ingantattun motoci, da dandamali na ketare-Dacromet flange bolts suna kiyaye amincinsu da tsayi fiye da na'urorin da aka rufe na al'ada. Rufin da ya dace yana hana duka lalata iri ɗaya da rami na gida, yana tabbatar da cewa kullin ya ci gaba da samar da ingantaccen ƙarfi mai ƙarfi a duk rayuwar sabis ɗin sa. Wannan ƙwararren ƙarfin hana tsatsa yana fassara kai tsaye zuwa rage farashin kulawa, ƙarancin rufewar da ba a shirya ba, da ingantaccen tsarin tsaro.

3.2 Cikakkiyar Haɗaɗɗen Hydrogen Kyauta

Ɗaya daga cikin fa'idodin da ke da mahimmanci na rufin Dacromet don ƙwanƙwasa flange shine cewa ba shi da ƙarancin haɓakar hydrogen. Ƙarfe mai ƙarfi na musamman yana da sauƙi ga haɓakar hydrogen, al'amarin da atom hydrogen ya bazu a cikin ƙananan ƙananan ƙarfe, yana rage ductility, kuma yana iya haifar da kwatsam, jinkirta karaya a ƙarƙashin damuwa na tensile. Hanyoyin lantarki na al'ada suna haifar da hydrogen a cathode a lokacin ajiyar karfe, har ma da yin burodi sosai bayan plating ba zai iya tabbatar da cikakken cire hydrogen ba.

Saboda Dacromet wani rufin da ba na lantarki ba ne wanda aka yi amfani da shi ba tare da pretreatment na acid ba, ba a shigar da hydrogen a cikin kusoshi yayin aikin gamawa. Maganin zafin jiki mai zafi na gaba yana ƙara tabbatar da cewa duk wani ɗanshi da ya rage yana kore. Gwajin cancantar ƙwarewa-ciki har da karatun da ke tallafawa yarda da Dacromet don ASTM A490 bolts-ya tabbatar da cewa Dacromet mai rufi mai ƙarfi mai ƙarfi yana riƙe da cikakkiyar ƙarfin karaya ko da bayan tsawaita bayyanar da yanayin lalata. Wannan sifa ta kyauta ta hydrogen embrittlement ta sa Dacromet ya zama zaɓi na zaɓi don haɗin haɗin flange mai mahimmanci a cikin injin turbin iska, gadoji, kayan aikin matsa lamba, da aikace-aikacen chassis na mota.

3.3 Bakin ciki, Rufin Uniform tare da Kyau mai Kyau

Ba kamar galvanizing mai zafi-tsoma ba, wanda ke ajiye ɗan ƙaramin kauri kuma wani lokacin mara daidaituwa Layer Layer zinc, Dacromet yana samar da siriri, sutura mai ɗaci sosai wanda ke bin madaidaicin juzu'i na zaren ƙwanƙwasa, radius ƙarƙashin kai, da fuskar flange. Wannan daidaitaccen daidaituwa yana kiyaye ƙirar zaren da aka ƙera kuma yana ba da damar ingantacciyar alaƙar tashin hankali yayin taro. Hanyar aikace-aikacen dip-spin yana tabbatar da cewa ko da hadaddun geometries, wuraren da aka cire, da saman ciki na flange bolts suna samun cikakkiyar kariya ta tsatsa, kawar da raunin raunin da aka danganta da suttura masu lantarki.

3.4 Tsawon Tsawon Zafi da Tsawon Injini

Rufin Dacromet ya kasance mai karko a ci gaba da yanayin yanayin sabis har zuwa 300 ° C, wanda ya zarce iyakar aiki na plating na zinc na al'ada (wanda ya fara raguwa a kusa da 100-120 ° C). Wannan juriya na zafi yana da mahimmanci musamman ga ƙwanƙolin flange da ake amfani da su a cikin ɗakunan injin, tsarin shaye-shaye, tanderun masana'antu, da kayan aikin samar da wutar lantarki. Bugu da ƙari, fim ɗin Dacromet da aka warke yana nuna kyakkyawan juriya ga lalacewar injiniya a lokacin sarrafawa da shigarwa, yana kara kiyaye lalatawar lokaci mai tsawo da aikin tsatsa na kullun.