GEOMET® (Jumete) Yokutidwa ndi Maboliti a Hexagonal-Technical Introduction 

1. Mawu oyamba a GEOMET® (久美特) Coating

GEOMET® (yomwe imadziwika bwino m'Chitchaina kuti 久美特 kapena Jumete) ndi zokutira zopanda chromium, zokhala ndi madzi za zinc-aluminium zopangidwa ndi NOF Metal Coatings Group monga wolowa m'malo wokonda zachilengedwe kunjira yachikhalidwe ya DACROMET®. Amapereka chitetezo chambiri cha dzimbiri pazitsulo zomangira zitsulo, makamaka ma bolts a hexagonal, pomwe akutsatira kwathunthu malamulo amakono achilengedwe monga RoHS, REACH, ELV (2000/53/EC), ndi ISO 10683.

Chophimbacho chimakhala ndi zinc ndi ma aluminium flakes omwe amamangidwa ndi matrix. Pogwiritsidwa ntchito ndi dip-spin kapena njira zopopera ndikuchiritsidwa pa kutentha kochepa kwambiri, GEOMET® imapanga filimu yopyapyala yachitsulo yasiliva-imvi (yomwe nthawi zambiri imakhala 6-12 μm) yomwe simakhudza kwambiri kukula kwa ulusi kapena kukwanira. Chifukwa chakuti ndondomekoyi si ya electrolytic, imachotseratu chiopsezo cha hydrogen embrittlement-ubwino wofunikira pazitsulo zolimba kwambiri (makalasi a katundu 8.8, 10.9 ndi 12.9).

1.1 Ubwino waukulu wa GEOMET®

• Zopanda chromium (zopanda Cr⁶ kapena Cr³⁺) komanso zochokera m'madzi - zopanga zachilengedwe.
• Kukana kwabwino kwa kupopera mchere: maola 720-1500+ (ISO 9227 / ASTM B117) kutengera kalasi ndi makulidwe.
• Palibe hydrogen embrittlement - yabwino kwa zomangira zolimba kwambiri.
• Kanema woonda (≈ 8 μm avareji) - samasokoneza kusonkhana kwa bolt-nut kapena ma torque.
• Kukhazikika kwabwino kwamafuta mpaka 300 ° C komanso kukana madzi amagalimoto, zosungunulira ndi dzimbiri la cyclic.
• Ma conductivity a magetsi ndi kuyanjana kwa bimetallic ndi aluminiyumu.
• Ovomerezedwa ndi OEMs zazikulu: Toyota, Honda, VW, BMW, GM, Ford, Daimler, Fiat, etc.

1.2 Magulu Akuluakulu a GEOMET®

Gulu 1 - Kufananiza kwa Common GEOMET® Coating Systems

Zindikirani: Kuchita zenizeni kumadalira kulemera kwake (nthawi zambiri> 24 g/m²), kukonzekera gawo lapansi, ndi malaya apamwamba a PLUS® omwe amasinthanso kugundana (μ ≈ 0.06–0.20 pa ISO 16047).

2. Maboti a Hexagonal - Mapangidwe ndi Miyezo

Maboti ammutu a hexagonal (hex) ndi ena mwa zomangira zamakina zomwe zimagwiritsidwa ntchito kwambiri. Mutu wawo wam'mbali zisanu ndi chimodzi umalola kumangika kosavuta ndi ma wrenches wamba kapena zitsulo ndipo amapereka malo akulu onyamula. Akaphatikizidwa ndi zokutira za GEOMET®, mabawutiwa amapereka mphamvu zamakina apamwamba komanso kukana kwa nthawi yayitali kwa dzimbiri.

2.1 Miyezo Yoyenera Yapadziko Lonse

• TS EN ISO 4014 / DIN 931 - Maboti akumutu a hexagon okhala ndi ulusi wochepa (shank pansi pamutu).
• ISO 4017 / DIN 933 - Zomangira zamutu za Hexagon zolumikizidwa bwino.
• TS EN ISO 898-1 Zomangira zomangira zopangidwa ndi chitsulo cha carbon ndi alloy zitsulo (makalasi a katundu 4.6 mpaka 12.9)
• TS EN ISO 10683 Zovala za zinc zomwe sizimayikidwa pamagetsi pa zomangira (zomwe zimagwira ntchito mwachindunji ku GEOMET®).
• ASTM F1136 / F1136M - Zinc / Aluminium Corrosion Protective Coatings for Fasteners.

2.2 Mechanical Property Classes (ISO 898-1)

Table 2 - Makalasi Katundu Wamba a Steel Hex Bolts

Kupaka kwa GEOMET® ndikofunikira kwambiri pamakalasi a 10.9 ndi 12.9 chifukwa njira yosagwiritsa ntchito electrolytic imapewa kutulutsa kwa haidrojeni komwe kumatha kuchitika ndi electro-galvanizing wamba.

2.3 Mitundu Yambiri Yamitundu

Maboti a metric hexagonal nthawi zambiri amaperekedwa mu mainchesi kuchokera ku M5 mpaka M36 (komanso okulirapo akafunsidwa). Kukweza kwa ulusi kumatsatira mndandanda wa ISO metric coarse. Maboti a ulusi wapang'ono (ISO 4014) amasiya shank yopanda ulusi yomwe imakulitsa mphamvu yakumeta; ma bolt a ulusi wonse (ISO 4017) amakulitsa kuchitapo kanthu pamabowo oponyedwa.

3. Deta ya Ntchito & Makhalidwe Opaka

3.1 Deta ya Corrosion Resistance

Table 3 - Magwiridwe Osalowerera Ndale Yamchere (NSS) (ISO 9227 / ASTM B117)

Mayesero a cyclic corrosion (mwachitsanzo, GMW 14872, SAE J2334, ACT) amasonyezanso zotsatira zabwino kwambiri-kawirikawiri maulendo 60 kapena kuposerapo popanda dzimbiri lofiira akagwiritsidwa ntchito moyenera.

3.2 Katundu Wowonjezera Wogwira Ntchito

1. Kutentha kwa kutentha: Kuchita kumasungidwa pambuyo pa 100 h pa 180 ° C; Itha kugwiritsidwa ntchito mpaka ≈ 300 ° C kwakanthawi kochepa.
2. Kukana kwa Chemical: Kukana bwino kwamafuta, mafuta, brake fluid, coolants and many organic solvents (VDA 621-412).
3. Kukhazikika kwamakina: Kukana kwabwino kwambiri pakuwononga kuwonongeka komanso kulimbitsa kangapo pakagwiritsidwa ntchito ma topcoat opaka mafuta.
4. Kupaka utoto: Kugwirizana ndi zokutira zambiri za organic ndi utoto wa ufa.

3.3 Kuyerekeza ndi zokutira Njira Zina

Table 4 - GEOMET® vs. Zovala Zina Zomwe Zimagwirizanitsa

4. Mapulogalamu ndi Zosankha Zosankha

GEOMET®-yokutidwa ndi hexagonal bolts amatchulidwa kwambiri m'mafakitale omwe chitetezo cha dzimbiri kwa nthawi yayitali, kutsata chilengedwe komanso magwiridwe antchito odalirika amafunikira nthawi imodzi.

4.1 Magawo Omwe Amagwiritsa Ntchito

• Magalimoto: chassis, kuyimitsidwa, powertrain, zomangira pansi pa thupi (zovomerezedwa ndi VW, BMW, GM, Toyota, Honda, etc.).
• Zomangamanga & zomangamanga: zitsulo, milatho, njanji, nsanja zamphepo.
• Makina aulimi ndi omanga.
• Zotsekera zamagetsi ndi zamagetsi komwe ma conductivity ndi kukana dzimbiri ndizofunikira.
• Zida zamafakitale zomwe zimakhudzidwa ndi chinyezi, mchere kapena kutentha kwapang'onopang'ono.

4.2 Zosankha Zosankha

Mukatchula ma bolt a GEOMET® hexagonal, lingalirani izi:

1. Kalasi ya dzimbiri yofunikira → sankhani GEOMET 321 (muyezo), 500 (yoyendetsedwa ndi mikangano) kapena 720 (chitetezo chachikulu).
2. Mphamvu zamakina → sankhani kalasi ya katundu 8.8, 10.9 kapena 12.9 molingana ndi katundu ndi chitetezo.
3. Mtundu wa ulusi → ulusi wapang'ono (ISO 4014) wolumikizana ndi kukameta ubweya wovuta; ulusi wonse (ISO 4017) pakuchitapo kanthu kwakukulu.
4. Friction coefficient → tchulani PLUS® topcoat ngati ubale wowongolera wa torque ndi wofunikira.
5. Zofunikira pazachilengedwe & zowongolera → GEOMET® imakwaniritsa RoHS, REACH ndi ELV popanda kuchotsera zina.

4.3 Mfundo Zotsimikizira Ubwino

Ogwiritsa ntchito zokutira odziwika bwino amakhala ndi ziphaso zovomerezeka (ISO 9001) ndipo nthawi zambiri amakhala ndi zovomerezeka za OEM (Toyota, GM, etc.). Makulidwe a zokutira, zomatira (mayeso a tepi), magwiridwe antchito opopera mchere ndi kugundana kokwanira ziyenera kutsimikiziridwa malinga ndi ISO 10683 ndi zojambula zamakasitomala. Maonekedwe owoneka ndi yunifolomu zitsulo zasiliva-imvi; mitundu yakuda (GEOBLACK®) imapezekanso ngati zokongoletsa kapena chizindikiritso zimafuna.

5. Mapeto

GEOMET® (久美特) zokutira zokhala ndi hexagonal zimaphatikiza kudalirika kwamakina kwa ISO-standardized hex-head fasteners ndi zokutira zamakono, zopanda chromium zopanda zinc-aluminium zomwe zimapereka chitetezo chambiri, kutsata chilengedwe komanso kumasuka ku hydrogen embrittlement. Kaya amagwiritsidwa ntchito pamakina amagalimoto, zitsulo zamakina kapena makina akumafakitale, zomangira izi zimapereka yankho laukadaulo laukadaulo komanso lotsimikizira zamtsogolo pazofunikira.

Kuti mupeze malingaliro okhudzana ndi pulojekiti, makulidwe kapena deta yamakina, fufuzani milingo yoyenera ya ISO (4014, 4017, 898-1, 10683) ndi mapepala aukadaulo operekedwa ndi NOF Metal Coatings Group kapena olembetsa ovomerezeka.