I-DACROMET HEX NUTS-Intshayelelo eBanzi kwiziQinisekiso eziNganyangekiyo kwi-Corrosion 

1. Intshayelelo

I-Hexagonal nuts, eyaziwa njenge-hex nuts, ziphakathi kwezona zibophelelo zisetyenziswa kakhulu kubunjineli bomatshini, ulwakhiwo, izithuthi, kunye nokusetyenziswa kwemizi-mveliso. Xa zidityaniswe nonyango oluphezulu olunje nge-Dacromet coating, la macandelo afumana ukuxhathisa okugqwesileyo, okuwenza alungele imeko engqongileyo ebandakanya ulwandle, i-automotive underbody, kunye nezicelo zesakhiwo sangaphandle.

Eli nqaku libonelela ngentshayelelo yeembono ezimbini: okokuqala kuphonononga uyilo olusisiseko kunye nemigangatho ye-hex nuts, kwaye okwesibini kuphonononga i-Dacromet (i-zinc-aluminium flake) itekhnoloji yokwambathisa ephucula kakhulu ukuqina nokusebenza kwayo.

1.1 Yintoni iHex Nuts?

I-hex nut luhlobo lwesibophelelo esinomngxuma ophothiweyo kunye nemilo yangaphandle ene-hexagonal. I-geometry enecala ezintandathu ivumela ukusetyenziswa ngokufanelekileyo kwe-torque usebenzisa i-wrenches okanye iziseko eziqhelekileyo, ukubonelela ukufikelela okulungileyo kwiindawo ezivaliweyo ngelixa uxhathisa ukujikeleza phantsi kwemithwalo ephezulu. I-Hex nuts iphantse yahlala isetyenziswa kunye nebholithi yokukhwelana okanye i-stud ukuze ibambe izinto ezimbini okanye ngaphezulu kunye.

Iimpawu eziphambili ziquka:

• Umsonto wangaphakathi (imetric okanye i-imperial) ehambelana nebholithi
• Ububanzi phakathi kweeflethi (ubukhulu bekrentshi) kunye nobukhulu obuchazwe ngokwemigangatho
• Ifumaneka kumabakala ahlukeneyo amandla (umzekelo, iKlasi 8, 10, iBanga lesi-5, lesi-8)
• Izinto eziqhelekileyo: i-carbon steel, i-alloy steel, insimbi engenasici

1.2 Indima yeDacromet Coating

I-Dacromet yinkqubo yokwaleka ye-zinc-aluminiyam ye-flake (eyayiphuhliswe yi-Metal Coatings International) isetyenziswe njengefilimu ebhityileyo, engeyiyo i-electrolytic. Inika ukhuseleko oluphezulu lwe-corrosion xa kuthelekiswa ne-electroplating ye-zinc eqhelekileyo okanye i-hot-dip galvanizing, ngokukodwa kwizibophelelo eziphezulu zamandla apho i-hydrogen embrittlement kufuneka igwenywe. Ukwaleka ngokuqhelekileyo kubonakala ngentsimbi esiliva-ngwevu kwaye ilinganisa kuphela i-5-12 μm ngobukhulu, igcina ukufaneleka kwentambo kunye nokuchaneka komdanso.

2. I-Hex Nuts: Uyilo, iMigangatho kunye nemilinganiselo

2.1 Iindidi zeHex Nuts

Kukho iinguqu ezininzi zokuhlangabezana neemfuno ezahlukeneyo zokusebenza:

• I-Standard (Egqityiweyo) i-Hex Nut - Injongo-Jikelele, ifom eqhelekileyo (ISO 4032 / DIN 934 / ASME B18.2.2).
• Heavy Hex Nut - Ububanzi obukhulu kwiiflethi kunye nobukhulu obukhulu bokusetyenziswa kwesakhiwo (umzekelo, i-ASTM A563).
• IJam (Ebhityile) I-nut - Ubunzima obuncitshisiweyo bokutshixa okanye ukusetyenziswa kwe-space-constraining.
• Inayiloni-Faka i-Lock Nut (iNylock) -Into ekhoyo yokutshixa i-torque.
• I-Flange Nut - Ubuso bewasha obudibeneyo bokuphucula ukuhanjiswa komthwalo.

2.2 Imilinganiselo ye-Metric Hex Nut (ISO 4032 / DIN 934)

Le theyibhile ilandelayo ishwankathela imilinganiselo engundoqo yeesayizi zemetric eziqhelekileyo zomgangatho we-hex nuts:

Itheyibhile 1: Imilinganiselo ekhethiweyo ye-metric hex nut (amaxabiso aqikelelwayo asekelwe kwi-ISO 4032 / DIN 934).

2.3 AMabanga Amandla & neZincedisi

I-Hex nuts zihlelwa ngokwemigangatho yepropathi yoomatshini. Iiklasi zemetric eziqhelekileyo ziquka iClass 6, 8, kunye ne-10 (ISO 898-2). Iiklasi eziphezulu zihambelana nomthwalo ophezulu wobungqina kunye nobunzima. Ukusetyenziswa kolwakhiwo, i-hex nuts enzima ehambelana ne-ASTM A563 okanye imigangatho ye-EN iyakhethwa. Intsimbi yekhabhoni yeyona nto ixhaphakileyo; insimbi engagqwali (A2/A4) isetyenziswa xa i-corrosion resistance efunekayo, nangona i-Dacromet-coated carbon steel isoloko inika enye indlela eneendleko eziphezulu zokusebenza.

3. I-Dacromet Coating Technology

3.1 Ukwakhiwa kunye noKwakha

I-Dacromet yi-water-based, i-non-electrolytic coating ebandakanya ngokuyinhloko i-zinc edibeneyo kunye ne-aluminium flakes ehlakazwe kwi-inorganic chromium-oxide binder. Ifilimu ebangelwayo ibhityile (ngokuqhelekileyo i-5-12 μm), isilivere yensimbi ngembonakalo, kwaye ibonelela ngokhuseleko lwe-multi-layer:

• Ukukhuselwa komqobo - Iileyile ze-Flake zihlukanisa i-substrate kwimidiya eyingozi.
• Ukukhuselwa kwe-Galvanic (umbingelelo) - i-Zinc isebenza njenge-anode, i-corroding ngokukhethekileyo.
• I-Passivation-Ii-oksidi zesinyithi zicothisa ukusabela komhlwa.
• Ukuzilungisa - i-Zinc oxides kunye ne-carbonates zifudukela kwiindawo ezonakalisiweyo.

3.2 Inkqubo yesicelo

Ulandelelwano oluqhelekileyo lwenkqubo luthintela ukucholwa kweasidi, ngaloo ndlela kuphelisa umngcipheko wokufakwa kwe-hydrogen:

1. Ukulungiswa komphezulu: Ukususwa kwealkaline + ukuhla ngoomatshini (ukudubula ngokudutyulwa).
2. Ukufakwa kokugquma: Dip-spin (eyona ixhaphake kakhulu kwi-fasteners), isitshizi, okanye idiphu-drain.
3. Ukucima / ukomisa kwangaphambili kwiqondo lokushisa eliphakathi ukususa amanzi.
4. Ukunyangwa kweThermal malunga ne-280-320 °C ukwenza i-inorganic matrix.

3.3 Ukusebenza koMhlwa

Ukusebenza ngokuqhelekileyo kuvavanywa ngovavanyo olungathathi hlangothi lwesitshizi setyuwa (ISO 9227 / ASTM B117). Iziphumo eziqhelekileyo zenkqubo yeDacromet 320/500 ziboniswe ngezantsi:

Itheyibhile 2: Ukusebenza kwe-corrosion eqhelekileyo yeengubo ze-Dacromet (iziphumo zixhomekeke kwi-substrate, ijometri, kunye nenkqubo).

Izibonelelo ezongezelelweyo ziquka ukuxhathisa ubushushu ukuya kutsho malunga ne-300 °C, ukupeyinta okulungileyo, i-coefficient elawulwayo yokukhuhlana (ingakumbi kunye ne-topcoat ethambisayo efana ne-PLUS okanye i-DACROLUB), kunye nokuhambelana ne-aluminiyam (umngcipheko wokuthotywa kwegalvanic).

4. Izicelo, uthelekiso kunye nesiphelo

4.1 Ukusetyenziswa okuqhelekileyo kweDacromet Hex Nuts

Ngenxa yokudityaniswa kwamandla aphezulu, ijometri echanekileyo, kunye nokumelana nokugqwesa okubalaseleyo ngaphandle komngcipheko we-hydrogen-embrittlement, i-Dacromet-coated hex nuts zichazwe ngokubanzi kwi:

• I-Automotive: i-chassis, i-underbody, i-injini kunye ne-fasteners yokuhambisa (ngokuqhelekileyo iBanga le-10.9 / i-Class 10).
• Izixhobo zaselwandle naselunxwemeni: iitreyila, iiwintshi, i-hardware yesakhiwo.
• Ukwakhiwa kunye neziseko zophuhliso: izakhiwo zentsimbi zangaphandle, iibhulorho, iindawo zokugada.
• Amandla omoya kunye noomatshini abanzima: Amandla aphezulu adityanisiweyo adityaniswe nemozulu.
• Uloliwe kunye nezixhobo zezolimo ezifuna ubomi obude benkonzo kwindawo enomhlwa.

4.2 Uthelekiso kunye nezinye iiCoatings

Itheyibhile 3: Uphononongo oluthelekisekayo lwezigqubuthelo zokuqhobosha eziqhelekileyo.

4.3 Isiphelo

I-Dacromet hex nuts imele isisombululo esivuthiweyo, esiphezulu esiphezulu esidibanisa ukuthembeka komatshini we-standard hexagonal fasteners kunye ne-zinc-aluminium flake corrosion protection. Ukugquma kwabo okubhityileyo, okufanayo kugcina i-geometry yomsonto echanekileyo kwaye kuphelise iinkxalabo ze-hydrogen-embrittlement ezinxulumene neenkqubo ze-electrolytic, zibenze bafaneleke ngakumbi kumabakala aphezulu asetyenziswa kukhuseleko-olubalulekileyo okanye olude lwezicelo zangaphandle.

Xa zikhetha izinto zokuqhobosha, iinjineli kufuneka ziqwalasele imeko-bume ethile enomhlwa, ubushushu benkonzo obufunekayo, itorque/iimfuno zokungqubana, kunye neendleko ekujoliswe kuzo. Kwiiprojekthi ezininzi zeemoto, zaselwandle, kunye neziseko ezingundoqo, i-Dacromet-coated hex nuts ihambisa ibhalansi egqwesileyo yokusebenza, ukuthembeka, kunye nexabiso lilonke lomjikelo wobomi.

Njengoko imimiselo yokusingqongileyo iqhubeka ithanda ezinye iindlela ezincitshisiweyo zechromium okanye ezingenazo i-chromium (umzekelo, iinkqubo zeGeomet®), usapho olubanzi lokugquma i-zinc-flake luhlala lubuchwephesha obukhethwayo kwizisombululo zale mihla zokunqanda ukubola.