DACROMET HEX NUTS-Mawu Omveka Kwambiri a Zomangamanga Zosagwirizana ndi Corrosion 

1. Mawu Oyamba

Mtedza wa hexagonal, womwe umadziwika kuti hex nuts, uli m'gulu la zomangira zomwe zimagwiritsidwa ntchito kwambiri pamakina, zomangamanga, zamagalimoto, komanso ntchito zamafakitale. Zikaphatikizidwa ndi chithandizo chapamwamba chapamwamba monga zokutira za Dacromet, zigawozi zimakwaniritsa kukana kwa dzimbiri, kuzipangitsa kukhala zoyenera m'malo ovuta kuphatikiza am'madzi, magalimoto apansi panthaka, ndi ntchito zakunja.

Nkhaniyi ikupereka zoyambira zapawiri: choyamba ndikuwunika kapangidwe kake ndi miyezo ya mtedza wa hex, ndipo chachiwiri ndikuwunika ukadaulo wa Dacromet (zinc-aluminium flake) womwe umathandizira kwambiri kulimba kwawo komanso magwiridwe antchito.

1.1 Kodi Mtedza wa Hex Ndi Chiyani?

Mtedza wa hex ndi mtundu wa chomangira chokhala ndi dzenje la ulusi komanso mawonekedwe akunja a hexagonal. Ma geometry am'mbali zisanu ndi chimodzi amalola kugwiritsa ntchito torque moyenera pogwiritsa ntchito ma wrench kapena sockets, kupereka mwayi wopezeka m'malo otsekeka ndikukana kuzungulira pansi pazolemetsa zambiri. Mtedza wa hex nthawi zambiri umagwiritsidwa ntchito molumikizana ndi bolt yokweretsa kapena nsonga kuti amangirire zigawo ziwiri kapena zingapo palimodzi.

Makhalidwe akuluakulu ndi awa:

• Ulusi wamkati (metric kapena mfumu) wofanana ndi bawuti
• M'lifupi kudutsa ma flats (kukula kwa wrench) ndi makulidwe ofotokozedwa ndi miyezo
• Zopezeka m'magiredi osiyanasiyana amphamvu (monga Class 8, 10, Giredi 5, 8)
• Zipangizo wamba: carbon zitsulo, aloyi zitsulo, zitsulo zosapanga dzimbiri

1.2 Udindo wa Kupaka kwa Dacromet

Dacromet ndi makina opangira zinc-aluminium flake (omwe adapangidwa ndi Metal Coatings International) omwe amagwiritsidwa ntchito ngati filimu yopyapyala, yopanda magetsi. Amapereka chitetezo chapamwamba kwambiri cha dzimbiri poyerekeza ndi electroplating wamba ya zinki kapena galvanizing yotentha, makamaka zomangira zamphamvu kwambiri zomwe hydrogen embrittlement iyenera kupewedwa. Chophimbacho nthawi zambiri chimawoneka ngati chitsulo chasiliva-imvi ndipo chimangopanga 5-12 μm mu makulidwe, kusunga ulusi wokwanira komanso kulondola kwake.

2. Mtedza wa Hex: Mapangidwe, Miyezo & Makulidwe

2.1 Mitundu ya Mtedza wa Hex

Pali mitundu ingapo kuti ikwaniritse zosowa zosiyanasiyana zogwirira ntchito:

• Standard (Yamaliza) Hex Nut - General-purpose, yofala kwambiri (ISO 4032 / DIN 934 / ASME B18.2.2).
• Heavy Hex Nut - M'lifupi mwake mokulirapo pamaphwando komanso makulidwe ochulukirapo pamapangidwe (mwachitsanzo, ASTM A563).
• Kupanikizana (Woonda) Mtedza - Kuchepetsa makulidwe a kutseka kapena kugwiritsa ntchito movutikira.
• Nylon-Insert Lock Nut (Nylock) - Chotsekera chokhazikika cha torque.
• Mtedza wa Flange - Nkhope yophatikizika yochapira kuti iperekedwe bwino.

2.2 Metric Hex Nut Dimensions (ISO 4032 / DIN 934)

Gome lotsatirali likufotokozera mwachidule miyeso yayikulu yamitundu yofananira ya mtedza wa hex:

Tebulo 1: Miyeso yosankhidwa ya metric hex nut (mitengo pafupifupi kutengera ISO 4032 / DIN 934).

2.3 Makalasi Amphamvu & Zida

Mtedza wa Hex umayikidwa molingana ndi miyeso yamakina. Magulu a metric wamba amaphatikizapo Class 6, 8, ndi 10 (ISO 898-2). Makalasi apamwamba amafanana ndi kuchuluka kwa umboni komanso kuuma. Pazogwiritsidwa ntchito mwamapangidwe, mtedza wolemera wa hex wotsatira miyezo ya ASTM A563 kapena EN ndiwo umasankhidwa. Chitsulo cha kaboni ndizomwe zimagwiritsidwa ntchito kwambiri; chitsulo chosapanga dzimbiri (A2 / A4) chimagwiritsidwa ntchito ngati chiwopsezo cha corrosion chikufunika, ngakhale Dacromet-coated carbon steel nthawi zambiri imapereka njira yotsika mtengo kwambiri yogwira ntchito kwambiri.

3. Dacromet Coating Technology

3.1 Mapangidwe ndi Kapangidwe

Dacromet ndi zokutira zokhala ndi madzi, zopanda electrolytic zomwe zimakhala ndi zinc ndi ma aluminium flakes omwazika mu inorganic chromium-oxide binder. Kanemayo ndi woonda (nthawi zambiri 5-12 μm), siliva wachitsulo, ndipo amapereka chitetezo chamagulu angapo:

• Chitetezo chotchinga - Zigawo za Flake zimalekanitsa gawo lapansi kuzinthu zowononga.
• Chitetezo cha Galvanic (chopereka nsembe) - Zinc imagwira ntchito ngati anode, makamaka ikuwononga.
• Passivation - Metal oxides amachepetsa kachitidwe ka dzimbiri.
• Kudzikonza - Zinc oxides ndi carbonates amasamukira kumadera owonongeka.

3.2 Njira Yogwiritsira Ntchito

Zomwe zimayenderana zimapewa kunyamula kwa asidi, potero kuchotsa chiwopsezo cha hydrogen embrittlement:

1. Kukonzekera pamwamba: Kuwotcha kwa alkaline + kutsika kwa makina (kuphulika kwa mfuti).
2. Kupaka zokutira: Dip-spin (yomwe imakonda kwambiri zomangira), kupopera, kapena dip-drain.
3. Kung'anima / kuyanika pa kutentha kwapakati kuchotsa madzi.
4. Kutentha kwa kutentha kwa pafupifupi 280-320 ° C kupanga matrix a inorganic.

3.3 Kuchita kwa Corrosion

Kuchita kwake kumawunikidwa nthawi zambiri ndikuyesa kusalowererapo kwa mchere (ISO 9227 / ASTM B117). Zotsatira zodziwika bwino zamakina a Dacromet 320/500 zikuwonetsedwa pansipa:

Gulu 2: Kuchita kwa dzimbiri kwanthawi zonse kwa zokutira za Dacromet (zotsatira zimadalira gawo lapansi, geometry, ndi njira).

Ubwino wowonjezerapo ndikuphatikizira kukana kutentha mpaka pafupifupi 300 ° C, kupendekeka kwabwino, kukangana koyendetsedwa bwino (makamaka ndi makoti opaka mafuta monga PLUS kapena DACROLUB), komanso kugwirizana ndi aluminiyamu (chiwopsezo chochepa cha galvanic corrosion).

4. Mapulogalamu, Kufananiza & Mapeto

4.1 Kugwiritsa Ntchito Ma Dacromet Hex Nuts

Chifukwa cha kuphatikizika kwawo kwamphamvu kwambiri, geometry yolondola, komanso kukana kwa dzimbiri popanda chiwopsezo cha hydrogen-embrittlement, mtedza wa hex wokutidwa ndi Dacromet umafotokozedwa mofala mu:

• Magalimoto: chassis, underbody, injini ndi zomangira zotumizira (nthawi zambiri Giredi 10.9 / Kalasi 10).
• Zida zam'madzi ndi zam'mphepete mwa nyanja: ma trailer, ma winchi, zida zamapangidwe.
• Zomangamanga ndi zomangamanga: zida zakunja zachitsulo, milatho, zoteteza.
• Mphamvu zamphepo ndi makina olemetsa: Malunji amphamvu olimba kwambiri omwe amakumana ndi nyengo.
• Zida za njanji ndi zaulimi zomwe zimafuna moyo wautali wautumiki mumlengalenga wowononga.

4.2 Kuyerekeza ndi zokutira Njira Zina

Gulu 3: Kufananiza mwachidule zokutira zomangira wamba.

4.3 Mapeto

Mtedza wa Dacromet hex umayimira njira yokhwima, yogwira ntchito kwambiri yomwe imaphatikiza kudalirika kwamakina kwa zomangira za hexagonal zokhazikika ndi chitetezo chapamwamba cha zinc-aluminium flake corrosion. Kupaka kwawo kopyapyala, kofananako kumasunga ulusi wolondola wa ulusi ndikuchotsa nkhawa za hydrogen-embrittlement zomwe zimayenderana ndi njira za electrolytic, zomwe zimawapangitsa kukhala oyenera kwambiri pamagiredi apamwamba kwambiri omwe amagwiritsidwa ntchito pachitetezo chovuta kwambiri kapena ntchito zakunja kwa moyo wautali.

Posankha zomangira, mainjiniya akuyenera kuganizira za malo omwe akudziwira, kutentha komwe kumafunikira, ma torque / mikangano, ndi mitengo yomwe akufuna. M'maprojekiti ambiri agalimoto, am'madzi, ndi zomangamanga, mtedza wa hex wokutidwa ndi Dacromet umapereka magwiridwe antchito abwino kwambiri, odalirika, komanso kuchuluka kwa moyo wonse.

Pamene malamulo azachilengedwe akupitilira kukomera njira zochepetsera chromium kapena zopanda chromium (mwachitsanzo, machitidwe a Geomet®), banja lopaka utoto la zinc-flake likadali ukadaulo wokondeka wamayankho amakono olimbana ndi dzimbiri.