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Flange Bolts mai Rufin Dacromet da Flange Nuts
2026-10-29
1. Gabatarwa
Kowane haɗin gwiwa da aka kulle yana da ƙarfi kawai kamar mafi raunin abokin tarayya. Ƙarfin flange mai ƙarfi wanda aka haɗa tare da kwaya hex na yau da kullun mara kariya yana haifar da a galvanic biyu, tarkon lalata, da gazawar filin nan gaba. Wannan labarin yana gabatar da nau'ikan da suka dace - Dacromet mai rufi flange bolts (hex kusoshi tare da hadedde flange karkashin kai) da Kwayoyin flange mai rufi dacromet (hex kwayoyi tare da jujjuya flange abin wuya) - kuma ya bayyana dalilin da ya sa duka mambobi na haɗin gwiwa ya kamata su dauki wannan tuti-aluminum flake shafi.
Dacromet shafi - da wadanda ba electrolytic zinc-flake tsari bayyana ta ISO 10683 kuma Saukewa: ASTM F1136 - yana ba da sa'o'i 700 zuwa 1,000 na juriya na feshin gishiri (ASTM B117 tsaka tsaki na gishiri, NSS) zuwa farko. jan tsatsa, a cikin fim na bakin ciki 8-12 μm, tare da babu hydrogen ebrittlement kasada. Aiwatar akai-akai zuwa gungu kuma goro, yana kare tsarin ƙulla zaren gabaɗaya: filaye masu ɗaukar nauyi, fuskokin flange, da zaren ɗaukar nauyi na ciki da na waje.
2. Abubuwa Biyu
2.1 Hex flange kusoshi
Maƙarƙashiyar flange hex ƙwanƙolin kai hexagon tare da hadedde flange madauwari (ginayen fuskar wanki) a saman ƙasan kai, daidaitacce a ciki. ISO 4162 / DIN 6921 kuma GB/T 5789/GB/T 16674. Zaɓuɓɓukan ƙira sun haɗa da:
- Ƙananan jerin flange- ƙananan diamita don wuraren da aka kulle;
- Manyan jerin flange (fadi).- girman diamita na kusan 1.5 × d, wanda ke rage matsa lamba a ƙarƙashin kai kuma yana rage haɗawa cikin kayan laushi kamar simintin aluminum;
- Flange mai shinge- radial hakora a kan flange karkashin cewa cizo a cikin manne saman, ƙara juriya ga vibration-jawo kai-sako da kai ba tare da keɓantaccen mai wankin kulle ba.
3. Me yasa Tsarin Daidaitawa yana da mahimmanci don Kula da lalata
Ƙaƙwalwar tuƙi mai lulluɓe da tutiya da ke gudana cikin dandali ko ƙwaya mai nau'in lantarki ta samar da a galvanic biyu: filaye guda biyu masu ban sha'awa a cikin hulɗa da electrolyte (ruwan sama, condensation, gishirin hanya). Ƙarƙashin ƙasa mai daraja yana lalata fifiko, yana haifarwa farin tsatsa (kayayyakin oxidation na zinc) kuma a ƙarshe jan tsatsa (lalata-ƙarfe) a daidai wuri mafi mahimmanci - zaren da ke ɗauke da preload. Rufe duka biyun kusoshi da goro tare da tsarin Dacromet iri ɗaya yana daidaita yuwuwar lalata kuma yana kawar da ƙarfin tuƙi don harin galvanic.
Tsarin Dacromet bai ƙunshi ɗaukar acid ba kuma babu halin yanzu na electrolytic, don haka ba a shigar da hydrogen atom a cikin karfe. Wannan ya sa ya zama madaidaicin zaɓi don ƙwanƙwasa mai ƙarfi mai ƙarfi da ƙwayoyin flange na nau'in kadara na 10.9 da 12.9, inda gazawar hydrogen embrittlement (HE) na masu ɗaure-plated electro-plated haɗarin haɗari ne.
4. Kwatanta Ayyukan Rubutu
| Tsarin sutura (bolt + goro, aji 8.8) | Yawan kauri | Gishiri fesa zuwa farin tsatsa | Salt spray zuwa jan tsatsa (NSS) | Haɗin hydrogen |
| Electro-galvanized Zn5 | 5m ku | ≈ 24 h | ≈ 72-96 h | Babban haɗari |
| Electro-galvanized Zn12 | 12m ku | ≈ 72 h | ≈ 192 h | Babban haɗari |
| Injiniya galvanizing | 25-40 m | da 96h | ≈ 400-500 h | Ƙananan |
| Hot-tsoma galvanized | 45-85 m | — | ≈ 720 h | Ƙananan; zaren yana buƙatar sake bugawa, girman goro |
| Dacromet DAC 320 (Class 2) | 8m ku | ≈ 240 h | ≈ 720 h | Kusan babu |
| Dacromet DAC 500 / baki | 10-12 m | ≈ 480 h | ≈ 1,000 h | Kusan babu |
Ƙarin fa'idar taro: ƙwayayen galvanized mai zafi dole ne a tsoma su da girma, wanda ke rage tasirin goro mai tasiri, yayin da ƙwayayen flange mai rufin Dacromet suna riƙe daidaitattun daidaito. 6H zaren haƙuri da cikakken ƙarfi - bakin ciki, fim mai wuyar gaske yana kiyaye zaren dacewa, don haka kusoshi da goro suna taruwa cikin yardar kaina tare da daidaiton juzu'i kuma babu. zato na rufin rufin.
5. Kammalawa
Dacromet-rufi flange bolts da flange kwayoyi samar da wani injiniya fastening tsarin: flange geometry rarraba matsa lodi, danne vibration loosening, da kuma kawar da daban-daban washers, yayin da matching tutiya-aluminum flake shafi a kan duka mambobi ya hana galvanic ma'aurata, shãfe da crevice zones, tsayayya da farin tsatsa da ja gishiri - 1, 700 karfe free of hydrogen embrittlement. Mafi mahimmancin ƙayyadaddun ƙa'idodin ya rage: odar kusoshi da goro kamar yadda suka dace, tsarin kariya na lalata.
