Chiyambi cha Dacromet Hex Nuts-Technical 

1. Mawu Oyamba

Mtedza wa hexagonal (mtedza wa hex) ndi zina mwa zomangira zomwe zimagwiritsidwa ntchito kwambiri pamisonkhano yamakina, zomangamanga, zamagalimoto, komanso ntchito zamafakitale. Zikaphatikizidwa ndi chithandizo chapamwamba chapamwamba monga zokutira za Dacromet, zimapereka kukana kwa dzimbiri kwapadera ndikusunga kulekerera koyenera komanso kukhulupirika kwamakina.

1.1 Kodi Mtedza wa Hex Ndi Chiyani?

Mtedza wa hex ndi mtundu wa chomangira chokhala ndi mawonekedwe akunja axagonal ndi dzenje lamkati. Mapangidwe a mbali zisanu ndi chimodzi amalola kugwiritsa ntchito torque moyenera pogwiritsa ntchito ma wrenches kapena sockets. Mtedza wa hex nthawi zambiri umapangidwa molingana ndi miyezo yapadziko lonse lapansi monga ISO 4032 (style 1 mtedza wokhazikika), DIN 934, kapena ASME B18.2.2, yokhala ndi makulidwe osiyanasiyana amitundu ndi mafumu.

Zinthu zazikuluzikulu za geometric zimaphatikizira ulusi wa ulusi (d), phula (P), m'lifupi kudutsa ma flats, m'lifupi kumakona (e), ndi kutalika kwa nati (m). Makalasi a katundu (monga 8, 10, 12 achitsulo) amatanthawuza mphamvu zamakina kuti zifanane ndi ma bawuti ogwirizana.

1.2 Chidule cha Kupaka kwa Dacromet

Dacromet ndi zokutira zamadzi, zopanda electrolytic zinc-aluminium flake zomwe zidapangidwa mu 1970s. Zimapangidwa ndi zinki zomwazikana bwino ndi ma flakes a aluminiyamu zoyimitsidwa mu inorganic chromate (kapena chromium-free) binder. Amagwiritsidwa ntchito makamaka ndi dip-spin kapena njira zopopera ndikuchiritsidwa pafupifupi 280-320 ° C, zimapanga filimu yowonda (yomwe nthawi zambiri imakhala 5-12 μm), yunifolomu, filimu yoteteza siliva.

Mosiyana ndi chikhalidwe cha electroplating kapena kutentha-kuviika galvanizing, Dacromet imapereka chitetezo chapamwamba cha dzimbiri popanda chiwopsezo cha hydrogen embrittlement-kuzipanga kukhala zoyenera kwambiri zomangira zolimba kwambiri (giredi 10.9 ndi 12.9).

2. Dacromet Coating Technology

2.1 Mapangidwe ndi Kapangidwe

Chophimbacho chimapangidwa ndi zigawo zowonjezera za zinki ndi aluminiyamu zomangika ndi matrix. Kapangidwe ka lamellar kameneka kamapanga zotchinga zingapo zakuthupi motsutsana ndi chinyezi ndi ayoni owononga, pomwe zinc imapereka chitetezo chansembe (galvanic). Aluminiyamu imawonjezera zotchinga katundu ndi kukana kutentha.

Chithunzi 2. Mapangidwe osavuta amitundu yambiri ya zokutira za Dacromet pagawo lachitsulo

2.2 Njira Yogwiritsira Ntchito

Ndondomeko yotsatizana ndi:

1. Kukonzekera pamwamba - kuchotsa mchere wa alkaline ndi kutsuka kwa abrasive (popanda pickling asidi).
2. Kugwiritsa ntchito zokutira - dip-spin kapena kupopera madzi a zinc-aluminium slurry.
3. Centrifuging - kuchotsa zokutira mowonjezera kuti muwonetsetse makulidwe ofanana.
4. Kuchiritsa - kuphika pa ~ 300 ° C kwa mphindi 15-30 kuti mupange filimu yowundana yachilengedwe. Makhoti angapo angagwiritsidwe ntchito kuti agwire bwino ntchito.

2.3 Ubwino waukulu

• Kusachita dzimbiri kwapadera: Kupopera mchere kwa maola 1,000–2,000+ (ASTM B117) mpaka dzimbiri lofiyira - nthawi zambiri 5-10 kuposa plating wamba wa zinki.
• Palibe hydrogen embrittlement: Non-electrolytic ndondomeko ndi otetezeka mkulu-mphamvu zitsulo (10.9 / 12.9).
• Kupaka kopyapyala (5–12 μm): Kumasunga ulusi wokwanira ndi kulondola kwake; palibe chifukwa cha overtapping.
• Kukana kutentha kwakukulu: Kukhazikika mpaka 300 ° C mosalekeza.
• Kuphimba kwamtundu umodzi: Kulowa kwabwino kwambiri m'malo obisika, ulusi, ndi ma geometri ovuta kudzera pa dip-spin.
• Ma friction coefficients: Atha kuphatikizidwa ndi ma topcoat opaka mafuta kuti azitha kuwongolera mphamvu ya torque.

Chithunzi 3. Kufanizira kofananiza kwa ntchito yopopera mchere

2.4 Kuyerekeza ndi Zovala Zina

Table 1. Kuyerekeza kwa magwiridwe antchito a zokutira wamba zomangira

3. Mtedza wa Hex - Miyezo, Makulidwe & Mphamvu

3.1 Miyezo Yapadziko Lonse

Miyezo yodziwika bwino ya mtedza wa metric hex ndi ISO 4032 (kalembedwe 1 mtedza wanthawi zonse) ndi akale koma ogwiritsidwabe ntchito kwambiri DIN 934. Miyezo iyi imatanthawuza miyeso, kulolerana, ndi magiredi azinthu (A, B, C). Maphunziro a katundu wa mtedza wachitsulo amatchulidwa mu ISO 898-2 (mwachitsanzo, makalasi 6, 8, 10, 12).

Zindikirani: DIN 934 ndi ISO 4032 amasiyana pang'ono mumiyeso yopingasa yamitundu ina (monga M10, M12, M22). Onetsetsani kuti zikugwirizana nthawi zonse mukasakaniza mfundo.

3.2 Miyeso Yofanana ya Metric (ISO 4032 Style 1)

Tebulo 2. Miyeso yosankhidwa ya metric hex nut (ISO 4032, mm). s = m'lifupi kudutsa ma flats; e = m'lifupi kudutsa ngodya; m = kutalika kwa mtedza.

3.3 Maphunziro a Katundu & Kufananiza

Mtedza uyenera kufananizidwa ndi mphamvu ya bawuti kuonetsetsa kuti olowa akulephera mowongolera (makamaka mu bawuti). Ma pairing wamba pansi pa ISO 898-2:

• Gulu la bolt 8.8 → Gulu la Nut 8 kapena kupitilira apo
• Gulu la bolt 10.9 → Gulu la Nut 10 kapena kupitilira apo
• Gulu la Bolt 12.9 → Gulu la Nut 12

Kupaka kwa Dacromet ndikofunika kwambiri kwa mtedza wa kalasi 10 ndi 12 chifukwa ndondomekoyi imayambitsa chiopsezo cha hydrogen embrittlement chomwe chingasokoneze zipangizo zamphamvu kwambiri.

4. Kugwiritsa ntchito Dacromet Hex Nuts

Mtedza wa hex-wokutidwa ndi Dacromet umapambana kulikonse komwe kukana kutukula kwambiri, kulondola kwenikweni, komanso kudalirika kwamakina kumafunika nthawi imodzi:

Magalimoto & Mayendedwe

Zida za chassis, kuyimitsidwa, mabuleki, zomangira injini, ndi zida zamkati zomwe zili ndi mchere wamsewu komanso kutentha kwambiri.

Mphamvu za Wind & Infrastructure

Maboliti a Tower ndi zomangira maziko a ma turbines amphepo akumtunda ndi kumtunda, komwe kutulutsa mchere kumatha kupitilira maola 2,000 achitetezo.

Zomanga & Zolemera Makina

Zolumikizidwe zamapangidwe, zida zaulimi, makina amigodi, ndi zoyika zakunja zimatengera nyengo komanso kukhudzana ndi mankhwala.

Malo a Marine & Chemical

Zida zamasinthidwe, nsanja zakunyanja, ndi zida zopangira pomwe zokutira zachikhalidwe zimawonongeka mwachangu.

4.1 Malangizo Osankha

Table 3. Chitsogozo chosankha mwachangu mtedza wa hex wokutidwa

5. Mapeto

Mtedza wa Dacromet hex umaphatikiza kudalirika kwamakina ndi geometry yokhazikika ya mtedza wamtundu wa hexagonal ndi chitetezo chapamwamba cha dzimbiri chaukadaulo wa zinc-aluminium flake. Kupaka kwawo kopyapyala, kofananako kumateteza kulumikizidwa kwa ulusi komanso kusasunthika kwa torque, pomwe kumapereka ntchito yopopera mchere kwambiri kuposa plating wamba komanso wopanda nkhawa za hydrogen-embrittlement.

Kwa mainjiniya ndi ogula omwe amatchula zomangira zamagalimoto, mphamvu zongowonjezwdwanso, zomanga, kapena malo owopsa a mafakitale, mtedza wa hex wokutidwa ndi Dacromet umapereka chitsimikiziro chokhazikika, cholondola, komanso kukwera mtengo kwanthawi yayitali.

Posankha zinthu, nthawi zonse tsimikizirani giredi yokutira (A/B kapena yofanana nayo), mulingo wopopera mchere, kugundana kokwanira (ngati topcoat yothira mafuta itayikidwa), komanso kugwirizana ndi kalasi ya bolt yokweretsa komanso momwe chilengedwe chimagwirira ntchito pomaliza.

Maumboni & Miyezo: ISO 4032, ISO 898-2, DIN 934, ASTM B117, mapepala opanga ma data a Dacromet / zinc-flake systems (mwachitsanzo, DACROMET®, GEOMET®).