Intshayelelo yeDacromet Hex Nuts-Technical 

1. Intshayelelo

I-Hexagonal nuts (i-hex nuts) ziphakathi kwezona zibophelelo zisetyenziswa kakhulu kwiindibano zoomatshini, ulwakhiwo, izithuthi, kunye nokusetyenziswa kwemizi-mveliso. Xa zidityaniswe nonyango oluphezulu olufana ne-Dacromet coating, zihambisa uxhathiso olukhethekileyo lwe-corrosion ngelixa zigcina ukunyamezelana okuchanekileyo kunye nokuthembeka koomatshini.

1.1 Yintoni iHex Nuts?

I-hex nut luhlobo lwe-fastener ene-hexagonal imilo yangaphandle kunye nomngxuma ongaphakathi. Uyilo olunamacala amathandathu luvumela ukusetyenziswa kwetorque esebenzayo usebenzisa i-wrenches eqhelekileyo okanye iziseko. I-Hex nuts zenziwa ngokwemigangatho yamazwe ngamazwe efana ne-ISO 4032 (isimbo soku-1 samantongomane aqhelekileyo), i-DIN 934, okanye i-ASME B18.2.2, equka uluhlu olubanzi lweemetric kunye neesayizi ze-impiriyali.

Iimpawu eziphambili zejometri ziquka umsonto wedayamitha yesiqhelo (d), inowuthi (P), ububanzi kwiiflethi (s), ububanzi kwiikona (e), kunye nobude be nut (m). Iiklasi zePropati (umzekelo, i-8, i-10, i-12 yentsimbi) ichaza amandla omatshini ukufanisa amabakala ebholithi ahambelanayo.

1.2 Isishwankathelo seDacromet Coating

I-Dacromet yi-coating yamanzi, i-non-electrolytic zinc-aluminium flake eyenziwe ngo-1970. Iqulethe i-zinc ehlakazwe kakuhle kunye neeflakes ze-aluminiyam ezixhonywe kwi-inorganic chromate (okanye i-chromium-free) binder. Isetyenziswa ikakhulu nge-dip-spin okanye iindlela zokutshiza kwaye yanyangwa malunga ne-280-320 °C, yenza ifilimu ekhuselayo ebhityileyo (ngokuqhelekileyo i-5-12 μm), iyunifomu, isilivere-grey.

Ngokungafani ne-electroplating yendabuko okanye i-hot-dip galvanizing, i-Dacromet inikeza ukhuseleko oluphezulu lwe-corrosion ngaphandle kwengozi ye-hydrogen embrittlement-eyenza ukuba ifaneleke ngokukodwa kwi-fasteners ephezulu (ibanga le-10.9 kunye ne-12.9).

2. I-Dacromet Coating Technology

2.1 Ukubunjwa kunye neSakhiwo

I-coating yenziwe ngamaleko adlulanayo e-zinc kunye neeflakes ze-aluminium eziboshwe yi-matrix ye-inorganic. Esi sakhiwo se-lamellar senza izithintelo zomzimba ezininzi ezichasene nomswakama kunye ne-ion ezibolayo, ngelixa i-zinc inika ukhuseleko lombingelelo (galvanic). I-Aluminiyam iphucula iimpawu zomqobo kunye nokumelana nobushushu.

Umzobo 2. Ulwakhiwo olulula lwe-multi-layer ye-Dacromet yokugqoka kwi-substrate yensimbi

2.2 Inkqubo yesicelo

Ulandelelwano lwenkqubo oluqhelekileyo lu:

1. Ukulungiswa komphezulu - ukuchithwa kwe-alkaline kunye nokucocwa kwe-abrasive (akukho pickling ye-asidi).
2. Ukusetyenziswa kwe-coating - idipha-spin okanye i-spray ye-zinc-aluminium slurry esekelwe emanzini.
3. I-Centrifuging - ukususwa kwe-coating engaphezulu ukuqinisekisa ubukhulu obufanayo.
4. Ukunyanga - ukubhaka kwi ~ 300 °C imizuzu eyi-15-30 ukwenza ifilimu eshinyeneyo ye-inorganic. Iidyasi ezininzi zinokufakwa kumabanga aphezulu okusebenza.

2.3 Izinto eziluncedo ezingundoqo

• Okugqwesileyo ukumelana nokuhlwa: 1,000-2,000+ iiyure zokutshiza ngetyuwa (ASTM B117) ukuya kwirusa ebomvu - ngokuqhelekileyo amaxesha angama-5-10 angcono kune-zinc plating.
• Akukho embrittlement hydrogen: Inkqubo non-electrolytic ikhuselekile kwintsimbi ephezulu amandla (10.9 / 12.9).
• I-Thin Coating (5-12 μm): Igcina intambo efanelekileyo kunye nokuchaneka komda; akukho mfuneko yokugqithisa.
• Ukumelana nobushushu obuphezulu: Izinzile ukuya kuthi ga kwi-300 °C yenkonzo eqhubekayo.
• Ugutyulo olufanayo: Ukungena okugqwesileyo kwimiva, imisonto, kunye neejometri ezintsonkothileyo ngedip-spin.
• I-coefficients ye-friction engaguqukiyo: Inokudityaniswa kunye ne-topcoat ethanjiswayo ukwenzela ukusebenza kwe-torque-tension elawulwayo.

Umfanekiso 3. Umzekeliso wokuthelekisa ukusebenza kwesitshizi setyuwa

2.4 Ukuthelekisa nezinye iiCoatings

Itheyibhile 1. Ukuthelekiswa kokusebenza kweengubo eziqhelekileyo ze-fastener

3. I-Hex Nuts - Imigangatho, imilinganiselo kunye namandla

3.1 ImiGangatho yeHlabathi

Eyona migangatho ixhaphakileyo ye-metric hex nuts yi-ISO 4032 (isitayela soku-1 samantongomane aqhelekileyo) kunye nendala kodwa isasetyenziswa ngokubanzi i-DIN 934. Le migangatho ichaza imilinganiselo, ukunyamezela, kunye namabakala emveliso (A, B, C). Iiklasi zepropati yeentsimbi zensimbi zichazwe kwi-ISO 898-2 (umzekelo, iiklasi 6, 8, 10, 12).

Qaphela: I-DIN 934 kunye ne-ISO 4032 zohluke kancinane kwimilinganiselo yeeflethi zobukhulu obuthile (umzekelo, M10, M12, M22). Hlala uqinisekisa ukuhambelana xa uxuba imigangatho.

3.2 Imilinganiselo yeMetric eqhelekileyo (ISO 4032 Style 1)

Itheyibhile 2. Imilinganiselo ekhethiweyo ye-metric hex nut (ISO 4032, mm). s = ububanzi kwiiflethi; e = ububanzi kwiikona; m = ubude be-nut.

3.3 Iiklasi zePropati kunye nokuTshaniswa

Amantongomane kufuneka ahambelane namandla ebholithi ukuqinisekisa ukuba umdibaniso uyasilela ngendlela elawulwayo (ngokukhethekileyo kwibholiti). Ukudityaniswa okuqhelekileyo phantsi kwe-ISO 898-2:

• Iklasi yeBolt 8.8 → Nut class 8 okanye ngaphezulu
• Iklasi yeBolt 10.9 → Iklasi yeNut 10 okanye ngaphezulu
• Iklasi yeBolt 12.9 → Iklasi yeNut 12

I-Dacromet yokugqoka ibaluleke kakhulu kwiklasi ye-10 kunye ne-12 yamantongomane kuba inkqubo ingenisa umngcipheko we-hydrogen embrittlement onokuthi uphazamise izinto eziphezulu zamandla.

4. Ukusetyenziswa kweDacromet Hex Nuts

I-Dacromet-coated hex nuts iyagqwesa naphi na apho ukuxhathisa okuphezulu kwe-corrosion, ukuchaneka komgangatho, kunye nokuthembeka koomatshini kufuneka ngaxeshanye:

Izithuthi kunye nezoThutho

Amalungu eChassis, iinkqubo zokunqunyanyiswa, iindibano zebrake, iziqhoboshi ze-injini, kunye namalungu angaphantsi avuleleke kwityuwa yendlela kunye namaqondo obushushu aphezulu.

Amandla omoya kunye neziseko zophuhliso

Iibholiti zeTower kunye nezibophelelo zesiseko kwiiinjini zomoya eziselunxwemeni nakwi-offshore, apho ukuvezwa kwesitshizi setyuwa kunokudlula iiyure ezingama-2,000 zemfuno yokhuseleko.

Ulwakhiwo kunye noomatshini abanzima

Uqhagamshelo lwezakhiwo, izixhobo zolimo, oomatshini basemigodini, kunye nofakelo lwangaphandle oluxhomekeke kwimozulu kunye nokuvezwa kweekhemikhali.

INdawo yoLwandle kunye neMichiza

I-hardware yeDekhi, amaqonga angaphesheya, kunye nezixhobo zokusebenza apho iingubo zemveli zithotywa ngokukhawuleza.

4.1 IziKhokelo zokuKhetha

Itheyibhile 3. Isikhokelo esikhawulezayo sokukhetha amandongomane ehex aqatywe

5. Isiphelo

I-Dacromet hex nuts idibanisa ukuthembeka komatshini kunye nejometri esemgangathweni yamantongomane e-hexagonal yendabuko kunye nokhuseleko oluphezulu lwe-corrosion ye-zinc-aluminium flake technology. Ukugquma kwabo okubhityileyo, okufanayo kugcina ukudityaniswa kwemisonto kunye nokungaguquguquki kwetorque, ngelixa behambisa ukusebenza kwesitshizi setyuwa kuphezulu kakhulu kunokwesiqhelo kwe-zinc plating kwaye akukho nkxalabo ye-hydrogen-embrittlement.

Kwiinjineli kunye nabathengi abachaza izinto zokuqinisa izithuthi, amandla avuselelekayo, iziseko zophuhliso, okanye iindawo ezirhabaxa kwimizi-mveliso, i-Dacromet-coated hex nuts zibonelela ngebhalansi eqinisekisiweyo yokuqina, ukuchaneka, kunye neendleko zexesha elide.

Xa ukhetha iimveliso, soloko uqinisekisa ibakala lokugquma (A / B okanye elilinganayo), ukulinganiswa kwetyuwa-spray, i-friction coefficient (ukuba i-topcoat lubricated isetyenzisiwe), kunye nokuhambelana neklasi yokukhwelana kunye neemeko zokusingqongileyo zesicelo sokugqibela.

Iireferensi kunye neMigangatho: ISO 4032, ISO 898-2, DIN 934, ASTM B117, amaphepha edatha yomenzi weDacromet / zinc-flake systems (umzekelo, DACROMET®, GEOMET®).