Dacromet Hex Nuts-Gabatarwa na Fasaha 

1. Gabatarwa

Kwayoyin hexagonal (kwayoyin hex) suna daga cikin abubuwan da aka fi amfani da su a cikin majalissar injina, gini, motoci, da aikace-aikacen masana'antu. Lokacin da aka haɗe su tare da ci-gaba na jiyya na saman kamar rufin Dacromet, suna ba da juriya na musamman na lalata yayin da suke riƙe daidaitattun juzu'ai da amincin injiniyoyi.

1.1 Menene Hex Nuts?

Kwayar hex wani nau'in maɗauri ne mai siffar waje mai siffar hexagonal da rami mai zaren ciki. Ƙirar mai gefe shida tana ba da damar ingantaccen aiki mai ƙarfi ta amfani da madaidaitan maƙalai ko kwasfa. Kwayoyin hex yawanci ana kera su ne bisa ga ƙa'idodin ƙasa da ƙasa kamar ISO 4032 (style 1 na yau da kullun), DIN 934, ko ASME B18.2.2, wanda ke rufe nau'ikan ma'auni da girman sarki.

Maɓallin siffofi na geometric sun haɗa da diamita na zaren ƙira (d), farar (P), faɗin faɗuwar filaye (s), faɗin sasanninta (e), da tsayin goro (m). Azuzuwan dukiya (misali, 8, 10, 12 don karfe) suna ayyana ƙarfin injina don dacewa da ma'auni daidai gwargwado.

1.2 Bayanin Rufin Dacromet

Dacromet wani tushen ruwa ne, wanda ba shi da wutar lantarki da zinc-aluminum flake shafi wanda aka haɓaka a cikin 1970s. Ya ƙunshi tataccen tarwatsewar tutiya da flakes na aluminium da aka dakatar a cikin abin ɗaure chromate (ko marar chromium). Ana amfani da shi da farko ta hanyar dip-spin ko hanyoyin fesa kuma an warke a kusan 280-320 ° C, yana samar da siriri (yawanci 5-12 μm), yunifom, fim ɗin kariya mai launin toka.

Ba kamar na al'ada electroplating ko zafi-tsoma galvanizing, Dacromet yana samar da m lalata kariya ba tare da hydrogen embrittlement hadarin-sa shi musamman dace da high-ƙarfi fasteners (aji 10.9 da 12.9).

2. Dacromet Coating Technology

2.1 Haɗawa da Tsari

Rufin ya ƙunshi yaduddukan tutiya da flakes na aluminium da aka ɗaure da matrix na inorganic. Wannan tsarin lamellar yana haifar da shinge na jiki da yawa akan danshi da ions masu lalata, yayin da zinc yana ba da kariya ta hadaya (galvanic). Aluminum yana haɓaka kaddarorin shinge da juriya na zafi.

Hoto 2. Sauƙaƙe tsarin multi-layer na rufin Dacromet akan ƙananan ƙarfe

2.2 Tsarin Aikace-aikacen

Tsarin tsari na yau da kullun shine:

1. Shirye-shiryen shimfidar wuri - lalatawar alkaline da tsabtace abrasive (babu pickling acid).
2. Aikace-aikacen sutura - tsoma-spin ko fesa slurry na tushen ruwa na zinc-aluminum.
3. Centrifuging - kawar da wuce haddi na rufi don tabbatar da kauri iri ɗaya.
4. Curing - yin burodi a ~ 300 ° C na minti 15-30 don samar da fim din inorganic. Ana iya amfani da riguna da yawa don mafi girman maki.

2.3 Mabuɗin Amfani

• Fitaccen juriya na lalata: 1,000-2,000+ sa'o'i 1,000 na gishiri gishiri (ASTM B117) zuwa tsatsa ja - yawanci sau 5-10 mafi kyau fiye da daidaitaccen zinc plating.
• Babu hydrogen embrittlement: Non-electrolytic tsari ne mai lafiya ga high-ƙarfi karfe (10.9 / 12.9).
• Shafi na bakin ciki (5-12 μm): Yana kiyaye dacewan zaren da daidaiton girma; babu bukatar overtapping.
• Babban juriya na zafin jiki: Barga har zuwa 300 °C ci gaba da sabis.
• Keɓancewar Uniform: Madalla da shiga cikin rafukan, zaren, da hadaddun geometries ta hanyar dip-spin.
• Matsakaicin juzu'i masu daidaitawa: Ana iya haɗa su tare da manyan riguna masu ma'ana don aikin ƙarfin juzu'i mai sarrafawa.

Hoto 3. Kwatancen kwatancen aikin fesa gishiri

2.4 Kwatanta da Sauran Rubutun

Teburin 1. Kwatancen kwatankwacin kwatankwacin abin rufewa na kowa

3. Kwayoyin Hex - Matsayi, Girma & Ƙarfi

3.1 Matsayin Duniya

Ma'auni na yau da kullum na metric hex kwayoyi sune ISO 4032 (style 1 na yau da kullum kwayoyi) da kuma tsofaffi amma har yanzu ana amfani da su DIN 934. Waɗannan ka'idoji sun bayyana ma'auni, haƙuri, da samfurin samfurin (A, B, C). An kayyade azuzuwan kadara don ƙwayar ƙarfe a cikin ISO 898-2 (misali, azuzuwan 6, 8, 10, 12).

Lura: DIN 934 da ISO 4032 sun bambanta dan kadan a cikin manyan filaye don wasu masu girma dabam (misali, M10, M12, M22). Koyaushe tabbatar da dacewa yayin haɗa ma'auni.

3.2 Ma'auni na gama gari (ISO 4032 Salo na 1)

Tebur 2. Zaɓaɓɓen ma'auni na hex goro (ISO 4032, mm). s = fadin fadin filaye; e = nisa a fadin sasanninta; m = tsayin kwaya.

3.3 Azuzuwan Dukiya & Daidaitawa

Dole ne a daidaita ƙwaya zuwa ƙarfin kulle don tabbatar da haɗin gwiwa ya gaza ta hanyar sarrafawa (zai fi dacewa a cikin kusoshi). Haɗin kai gama gari ƙarƙashin ISO 898-2:

• Bolt class 8.8 → Nut class 8 ko sama da haka
• Bolt class 10.9 → Nut class 10 ko sama da haka
• Bolt class 12.9 → Nut class 12

Dacromet shafi yana da mahimmanci musamman ga nau'in 10 da 12 kwayoyi saboda tsarin ba ya gabatar da haɗarin haɓakar hydrogen wanda zai iya lalata kayan ƙarfi mai ƙarfi.

4. Aikace-aikace na Dacromet Hex Kwayoyin

Kwayoyin hex mai rufaffiyar Dacromet sun yi fice a duk inda ake buƙatar juriya mai ƙarfi, daidaiton girma, da amincin injina lokaci guda:

Motoci & Sufuri

Abubuwan da aka gyara na chassis, tsarin dakatarwa, taron birki, na'urorin injin injin, da sassan jikin da aka fallasa ga gishirin hanya da yanayin zafi.

Makamashin Iska & Kayayyakin Gaggawa

Tushen hasumiya da na'urori masu ɗaurin gindi don injin turbin iska na kan teku da na teku, inda fallasa ruwan gishiri zai iya wuce sa'o'i 2,000 na buƙatun kariya.

Gina & Manyan Injina

Haɗin gine-gine, kayan aikin noma, injinan hakar ma'adinai, da kayan aikin waje waɗanda ke ƙarƙashin yanayin yanayi da bayyanar sinadarai.

Marine & Chemical muhalli

Kayan aiki na bene, dandamali na ketare, da kayan sarrafa kayan aiki inda suturar gargajiya ke raguwa cikin sauri.

4.1 Jagoran Zaɓi

Tebur 3. Jagoran zaɓi na sauri don ƙwayar hex mai rufi

5. Kammalawa

Kwayoyin hex na Dacromet sun haɗu da amincin injina da daidaitaccen lissafi na ƙwaya mai hexagonal na gargajiya tare da ci-gaba da kariyar lalata fasahar flake zinc-aluminum. Sirinrin su, riɓi iri ɗaya yana kiyaye haɗin zaren da daidaiton juzu'i, yayin da ke ba da aikin fesa gishiri wanda ya zarce plating na zinc na al'ada kuma ba tare da damuwa da damuwa na hydrogen ba.

Ga injiniyoyi da masu siye waɗanda ke ƙayyadaddun kayan ɗamara don kera, makamashi mai sabuntawa, ababen more rayuwa, ko munanan muhallin masana'antu, ƙwayar hex mai rufin Dacromet yana ba da ingantacciyar ma'auni na dorewa, daidaito, da ingantaccen farashi na dogon lokaci.

Lokacin zabar samfuran, koyaushe tabbatar da darajar shafi (A/B ko daidai), ƙimar fesa gishiri, ƙimar juzu'i (idan an yi amfani da suturar mai mai mai), da kuma dacewa tare da ajin ajin mating da yanayin muhalli na aikace-aikacen ƙarshe.

Nassoshi & Ka'idoji: ISO 4032, ISO 898-2, DIN 934, ASTM B117, takaddun bayanan masana'anta don tsarin Dacromet / zinc-flake (misali, DACROMET®, GEOMET®).