Maboti a Hexagon Flange okhala ndi Dacromet Coating: Geometry, Njira, Magwiridwe ndi Chitsogozo cha Msonkhano

2026-10-26

1. Mawu Oyamba

Geometry, Ndondomeko, Kachitidwe ndi Malangizo a Msonkhano (1)

Flange bolts - hexagon head bolts yokhala ndi flange yophatikizika (nkhope yochapira) yomangidwa pamutu - yakhala chosankha chosankha pakupanga magalimoto, kuphatikiza makina, ndi kupanga mapaipi. Pophatikiza bawuti ndi wochapira mu gawo limodzi, bawuti ya flange imathandizira kusonkhana, kugawa katundu wotsekera pamalo okulirapo, ndikuwongolera kukana kudzimasula pogwedezeka.

M'malo opangira ziwopsezo, komabe, phindu la kapangidwe ka flange limatha kuzindikirika ngati zokutira zomwe zimateteza bolt zimakhalabe ndi moyo bola cholumikizira chokha. Dacromet (zinc-aluminiyamu flake) ❖ kuyanika kwatuluka ngati njira yoteteza dzimbiri yamphamvu kwambiri ya flange mabawuti, yopereka kukana kutsitsi kutsitsi kangapo kuposa electro-galvanizing pagawo la makulidwe a dip-dip galvanizing - komanso popanda chiopsezo cha hydrogen embrittlement.

Nkhaniyi ikufotokoza za geometry ndi miyezo ya ma hex flange bolts, ikufotokoza njira yokutira ya Dacromet monga momwe imagwiritsidwira ntchito ku ma flange bolts, imapereka mafananidwe a magwiridwe antchito ndi mawonekedwe ake, ndipo imapereka chitsogozo chothandiza komanso chitsogozo cha msonkhano.

2. Kodi Hex Flange Bolt ndi Chiyani?

Bawuti ya hex flange ndi bawuti yamutu ya hexagon yomwe mutu wake umanyamula chozungulira chozungulira pamtunda, malinga ndi ISO 4162 / DIN 6921 (metric) ndi miyezo yofananira ya inchi-series. Pali mitundu iwiri yosiyana ya mapangidwe:

Small flange mndandanda- compact flange m'mimba mwake m'malo olimba, omwe amapezeka mu injini zamagalimoto;
Large (lonse) flange mndandanda- pafupifupi 1.5 × m'mimba mwake yokhala ndi ulusi, yomwe imagwiritsidwa ntchito pomwe zonyamula zapamwamba kapena zida zomangira zofewa (aluminium, mapulasitiki) zimakhudzidwa.

Ma bolts ambiri a flange amaphatikizanso serrations (mano ozungulira) pa flange pansi. Ma serrations amaluma pamwamba pa makwerero, kukulitsa kukana kusuntha kwapang'onopang'ono ndikuwongolera kukana kwa bawuti kuti idzimasula yokha pansi pa kugwedezeka kopingasa - osafuna makina ochapira loko.

Geometry, Ndondomeko, Kachitidwe ndi Malangizo a Msonkhano (2)

3. N'chifukwa Chiyani Dacromet Akuphimba Ma Flange Bolts?

Dacromet zokutira ndi madzi slurry zinki ndi aluminiyamu flakes ndi passivators ndi inorganic binders. Zigawo zimakutidwa, zopota pakati kuti zichotse slurry, ndikuchiritsidwa pa 280-330 ° C kwa mphindi 20-40; mikombero iwiri ya dip-spin nthawi zambiri imatulutsa filimu ya 6-10 μm. Maboti a Flange ali oyenererana bwino ndi dip-spin process:

1. Kuphunzira kwathunthu- zokutira zimalowa mu flange-to-shank fillet ndi serration grooves, madera omwe electroplating nthawi zambiri imasiya madipoziti woonda kapena osakhazikika;

2.Uniform makulidwe- kupota kwapakati kumapereka ngakhale mafilimu pankhope yathyathyathya, kusunga malo ofananirako omwe ndi ofunikira kuti azitha kuwongolera bwino;

3.No hydrogen embrittlement- palibe pickling ya asidi kapena electrolytic pano yomwe ikukhudzidwa, kotero kuti magiredi 10,9 ndi 12.9 akhoza kukhala otetezedwa bwino;

4.Ulusi wolondola- filimu yopyapyala, yolimba imasunga ulusi wa geometry, kotero mabawuti a flange amayendabe momasuka m'mabowo okhomedwa ndikukhala ndi mtedza wamba wamba;

5.Kusasinthasintha kwa mkangano- okhala ndi ma topcoats ophatikizika amafuta, ma Dacromet flange bolts amakwaniritsa zinthu zokhazikika za mtedza (K ≈ 0.12-0.16), zofunika pamizere yolumikizirana yoyendetsedwa ndi torque.

4. Magwiridwe ndi Ubwino Wamakina

Malo onyamula ndi kuthamanga pamwamba

Ubwino wodziwika wa mapangidwe a flange ndikugawa katundu. Gome ili pansipa likufananiza bawuti wamba wa M10 hex, bawuti ya hex yokhala ndi makina ochapira osiyana, ndi bawuti yayikulu ya M10 pamlingo womwewo wa 30 kN.

Kusintha kwa bolt	Kukhala ndi OD (pafupifupi.)	Malo onyamula (mm²)	Kuthamanga kwapamtunda pa 30 kN (N/mm²)
Hex bolt DIN 933, palibe chochapira	14.5 mm (nkhope yochapa)	≈ 78	≈ 385
Hex bawuti + wochapira wathyathyathya DIN 125	20 mm	≈ 166	≈ 181
Hex flange bawuti DIN 6921	21.5 mm	≈ 208	≈ 144

Table 1. Malo onyamula ndi kufananitsa kwapamwamba (M10 chitsanzo, makhalidwe ofanana).

Chithunzi 2. Kutsika kwapansi kumatanthauza kuyika pang'ono kumalo ofewa kapena opaka utoto komanso olowa mwamphamvu pakapita nthawi.

Kutsika kwapansi kumachepetsa kuyika (brinelling) mu aluminiyamu kapena malo opaka utoto, kumapangitsa kuti mfundo zomangira zikhale zolimba pakapita nthawi, komanso kumachepetsa chiopsezo cha mutu kuti umire muzinthu zofewa. Kuphatikiza apo, kuyesa kodziyimira pawokha kunjenjemera (kuyesa kwa Junker, DIN 65151) kumawonetsa nthawi zonse kuti mabawuti opindika amasunga katundu wocheperako kuposa mabawuti a hex amtundu womwewo, chifukwa ma serrations amatseka mawonekedwe ake ndipo flange yotakata imakana kuzungulira mutu.

Zam'mbuyo. Kenako.

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