Dacromet Flange Bolts: Cikakken Gabatarwa zuwa Ƙaƙƙarfan Ƙaƙƙarfan Ƙaƙƙarfan Ƙarfafawa 

2. Menene Dacromet Coating?

Dacromet shi ne babban aiki tutiya-aluminum flake shafi tsarin ɓullo da a matsayin ci-gaba madadin zuwa gargajiya electroplating da zafi tsoma galvanizing. Rubutun ya ƙunshi yadudduka na tutiya da flakes na aluminium wanda aka dakatar a cikin ɗaure mara nauyi. Bayan aikace-aikace ta hanyar dip-spin, spray, ko tsoma-magudanar hanyoyin da kuma yanayin zafi mai zafi, flakes suna samar da shinge mai yawa, mai yawa wanda ke ba da hanyoyi masu yawa na anti-lalata kariya.

Ba kamar na al'ada na zinc plating wanda ya dogara da Layer na ƙarfe mai ci gaba ɗaya, tsarin lamellar na zinc da flakes na aluminum yana haifar da hadaddun hanya mai mahimmanci wanda ke jinkirta shigar ruwa, oxygen, da ions chloride. Wannan microstructure na musamman yana samar da tushe na mafi girman rufin juriya lalata kuma mai dorewa rigakafin tsatsa iyawa. Yawan kauri na Dacromet ya bambanta daga 5 zuwa 12 micrometers (μm). Duk da siraran siraran sa, Layer Dacromet da aka yi amfani da shi yadda ya kamata na iya cimma juriya na fesa gishiri fiye da sa'o'i 1,000 - kuma galibi sama da sa'o'i 2,000 - ba tare da bayyanar tsatsa ba. Wannan darajar anti-tsatsa Yi nisa ya zarce na'urorin lantarki-galvanized na al'ada kuma akai-akai ya fi ƙarfin tsoma-tsatsa mai zafi a cikin cyclic da gwajin fallasa na dogon lokaci.

3. Mabuɗin Amfanin Dacromet Flange Bolts

Dacromet flange bolts sun haɗu da amincin inji tare da mafi girma anti-lalata karko, yin su manufa domin high-ƙarfi da m fastening aikace-aikace.

3.1 Fitaccen Juriya na Lalata da Ayyukan Anti-tsatsa

Babban dalilin zaɓin ƙusoshin flange mai rufi na Dacromet shine na musamman juriya lalata. Gwajin fesa gishiri mai zaman kanta (ASTM B117 / ISO 9227) koyaushe yana nuna cewa rufin Dacromet yana jure wa awanni 1,000 zuwa 2,000 ko sama da haka kafin tsatsa ta bayyana. Ƙididdigar kwatancen sun nuna cewa Dacromet sau da yawa yana ba da mafi kyawun sau 3 zuwa 10 anti-tsatsa aiki fiye da daidaitaccen zinc electroplating. Wannan mafi girma rigakafin tsatsa iyawa tana fassara zuwa rayuwar sabis mai mahimmanci don haɗin flange da aka fallasa ga mahalli masu ban tsoro kamar bakin teku, ruwa, da yanayin masana'antu.

3.2 Babu Hadarin Rushewar Hydrogen

Babban ƙarfi flange kusoshi (maki 8.8, 10.9, 12.9 da ASTM A490 / F3125 tsarin kusoshi) suna musamman kula da hydrogen embrittlement. Wutar lantarki ta al'ada ta ƙunshi ɗaukar acidic da kuma sanyawa na electrolytic wanda zai iya shigar da hydrogen a cikin ƙarfe, yana haifar da jinkirin karaya. Dacromet wani tsari ne wanda ba na lantarki ba ne wanda ke guje wa wannan haɗarin, yana mai da kusoshi da aka yi wa Dacromet fifiko. anti-lalata bayani don manyan kusoshi na flange mai tsayi.

3.3 Rufi Mai Bakin Ciki tare da Madaidaicin Madaidaicin Zaren

Tare da kauri na yau da kullun na 5-12 μm kawai, fim ɗin Dacromet baya canza girman zaren ko tsoma baki tare da haɗin gwiwar goro. Sabanin haka, galvanizing mai zafi-tsoma sau da yawa yana samar da kauri, riguna marasa daidaituwa waɗanda ke cika zaren kuma suna buƙatar ƙwaya masu girma. Dacromet flange bolts don haka ana iya haɗa su tare da daidaitattun kwayoyi yayin da suke isar da fice juriya lalata kuma anti-tsatsa kariya.

3.4 Babban Tsayin Zazzabi da Kariya na Injiniyanci da yawa

Dacromet coatings kula da su anti-lalata Mutunci a yanayin zafi mai tsayi (yawanci har zuwa 250-300 ° C), wanda ke da mahimmanci ga ƙwanƙolin flange kusa da injuna, tsarin shaye-shaye, ko tsarin waje. Rufin yana ba da ƙarin guda huɗu rigakafin tsatsa hanyoyin: (1) Kariyar shinge daga abin da ke tattare da flakes na zinc-aluminum; (2) Kariyar hadaya ta Galvanic ta zinc; (3) Tasirin gyaran kai ta hanyar cika oxide na ƙananan lalacewa; da (4) Passivation ta hanyar daurin inorganic wanda ke jinkirta ci gaba da lalata.