Intshayelelo kwi-Dacromet Hexagonal Bolts

2026-09-09

1. Intshayelelo

Kubunjineli banamhlanje kunye nokuveliswa, ukuthembeka koqhagamshelo lomatshini kuhlala kuxhomekeke kumgangatho kunye nokuqina kweefasteners. Phakathi kweendlela ezahlukeneyo zonyango ezifumanekayo kwiibholiti zetsimbi, i-Dacromet coating iye yavela njengeteknoloji ehamba phambili yokubonelela ngokhuseleko olukhethekileyo lwe-corrosion ngaphandle kokuphazamisa amandla omatshini. I-Dacromet hexagonal bolts-hexagon head bolts ephathwa ngolu hlobo oluphambili lwe-zinc-aluminium flake coating-lucaciswe ngokubanzi kumashishini apho ukusebenza kwexesha elide phantsi kweemeko ezinzima zokusingqongileyo kubalulekile.

Eli nqaku linika umboniso obanzi we-Dacromet ye-hexagonal bolts, egubungela ubume beteknoloji yokugqoka, inkqubo yokuvelisa, iinzuzo eziphambili zokusebenza, ukuthelekiswa kunye neengubo zendabuko, izicelo eziqhelekileyo, kunye nemigangatho yoshishino olufanelekileyo. Ukuqonda le miba kwenza ukuba iinjineli, abathengi, kunye neengcali zogcino zithathe izigqibo ezinolwazi xa kukhethwa iziqhoboshi kwizicelo ezibalulekileyo.

2. Yintoni i-Dacromet Coating?

I-Dacromet (uphawu lwentengiso olubhalisiweyo oluye lwaba sisichazi se-generic kwithekhnoloji) si-non-electrolytic, i-inorganic zinc-flake coating system. Iqukethe ikakhulu i-zinc ecocekileyo kunye ne-aluminium flakes ehlakazwe kwi-binder esekwe emanzini equlethe iikhompawundi zechromium. Emva kokusetyenziswa kunye nokunyanga, iiflakes zenza isakhiwo se-lamellar esine-multilayered esinika umqobo kunye nokukhuselwa kwedini (cathodic) kwi-substrate yensimbi engaphantsi.

Ngokungafaniyo ne-electroplating eqhelekileyo okanye i-hot-dip galvanizing, inkqubo ye-Dacromet ayibandakanyi i-acid pickling okanye i-electrolytic deposition. Endaweni yoko, iinxalenye zikholisa ukucocwa ngoomatshini, zintywiliselwe okanye zitshizwe ngokunqunyanyiswa kokugquma kwamanzi (okuqhelekileyo kusetyenziswa indlela yediphu-spin), kwaye zinyangelwe malunga ne-300 °C. Ngexesha lokunyanga, i-binder yenza i-matrix exineneyo ye-inorganic evala i-flakes yesinyithi kwindawo kwaye ibophe ngokuqinileyo kwisiseko sesinyithi.

Ifilimu enesiphumo ibhityile ngokumangalisayo-idla ngokuba yi-4-8 μm kuphela (i-micrometers)-kodwa ihambisa ukuxhathisa ukubola ngokuphindwe kaninzi kuneengubo ze-zinc zesintu ezinokuthelekiswa okanye ubukhulu obukhulu. Inkangeleko egqityiweyo ngokuqhelekileyo yintsimbi efanayo yesilivere-grey. Ukwahluka kwangoku, kubandakanywa ne-chrome-ecuthiweyo kunye ne-chrome-free systems (efana ne-Geomet), ilungisa imimiselo eguqukayo yokusingqongileyo ngelixa igcina izibonelelo zokusebenza eziphambili.

3. IiBolts zeHexagonal kunye nendima yoNyango lwe-Surface

Iibholiti ezine-hexagonal (ezikwabizwa ngokuba yi-hex head bolts okanye izikrufu ze-hexagon head) zinentloko enamacala amathandathu evumela ukuba kusetyenziswe i-torque ephezulu kunye ne-wrenches okanye iisokethi eziqhelekileyo. Ziphakathi kwezona zibophelelo zixhaphakileyo ezisetyenziswa kulwakhiwo, kwiimoto, koomatshini, nakwizicelo zokwakha. Amabanga avela kumandla aphantsi (umzekelo, iklasi yepropathi ye-4.8) ukuya kumandla aphezulu (8.8, 10.9, 12.9 nangaphezulu), eveliswe kwi-carbon steel okanye i-alloy steel kunye nokushisa-ukuphathwa ukuze kufezekiswe iimpawu ezifunekayo zomatshini.

Unyango lomphezulu lubalulekile kuba intsimbi engenanto isengozini yokubola, enokuthi yehlise umthamo wokuthwala umthwalo, ibambe imisonto, kwaye ekugqibeleni ikhokelele ekungaphumelelini kokudibeneyo. Iinketho zemveli ezifana ne-electro-galvanizing kunye ne-hot-dip galvanizing zinemida eyaziwayo: umngcipheko we-hydrogen embrittlement kwiintsimbi eziphezulu zamandla, ubomi obuncinci bokuhlwa kwiindawo ezinobundlongondlongo, kunye nokuphazamiseka kwe-dimensional okubangelwa yi-coatings engqindilili kwimicu ecolekileyo. I-Dacromet coating yaphuhliswa ukoyisa ezi ntsilelo.

4. Izinto eziluncedo eziphambili zeDacromet Hexagonal Bolts

4.1 Ukumelana noKutya okuPhezulu

Ngaphandle kobunzima bokugquma obuyi-4-8 μm kuphela, i-Dacromet ibonelela ngokhuseleko lokutya okuqhelekileyo amaxesha angama-7-10 amakhulu kune-electro-galvanizing eqhelekileyo. Ekuvavanyeni kokungathathi hlangothi kwetyuwa yokutshiza (ASTM B117 / ISO 9227), i-Dacromet ifakwe ngokufanelekileyo i-coatings ihlala idlula iiyure ze-1,000-kwaye ihlala ifikelela kwiiyure ze-1,200 okanye ngaphezulu-ngaphandle kokubonakala kwe-rust ebomvu. Ezinye iinkqubo eziphezulu zokusebenza zifikelela ixesha elide. Olu kuqina lukhethekileyo luvela kumqobo we-multi-layer ye-zinc edibeneyo kunye neeflakes ze-aluminiyam ezidityaniswe nefuthe lokudlula le-inorganic binder.

4.2 Ukungabikho kweHydrogen Embrittlement

Enye yezona zinto zibalulekileyo eziluncedo kwiziqhoboshi zamandla aphezulu kukungabikho komngcipheko we-hydrogen embrittlement. Iinkqubo ze-electroplating zemveli zibandakanya ukucocwa kwe-asidi kunye ne-cathodic deposition, zombini ezinokuzisa i-athomu ye-athomu kwi-lattice yensimbi. Le hydrogen inokubangela ukulibaziseka kokuqhekeka kwe-brittle phantsi koxinzelelo lwe-tensile-ingakumbi iyingozi kwiiklasi zepropathi 10.9, 12.9 nangaphezulu. Ngenxa yokuba inkqubo ye-Dacromet ayisebenzisi i-asidi pickling okanye i-electrolysis, iibholiti eziphezulu zamandla zinokugquma ngokukhuselekileyo ngelixa zigcina ingqibelelo yazo epheleleyo.

4.3 Ukumelana nobushushu okugqwesileyo

Iingubo zeDacromet zihlala zizinzile kwaye zikhusela kubushushu benkonzo eqhubekayo ukuya kuthi ga kwi-300 °C (kunye nokuvezwa kwexesha elifutshane nangaphezulu). Ii-electroplatings zesiqhelo ze-zinc ziqala ukuthotywa kwaye ziphulukane nokumelana nomhlwa ngaphantsi kwe-100-150 °C. Oku kuzinza kwe-thermal kwenza i-Dacromet hexagonal bolts ilungele amagumbi e-injini, iinkqubo zokukhupha, iziko lezoshishino, kunye nezinye iindawo zokushisa eziphakamileyo.

4.4 IFilimu eNcinci kunye nokuYabelana kwemisonto

Ingubo ebhityileyo, efanayo igcina imilinganiselo yentambo ebalulekileyo kunye nokunyamezela. Ngokungafaniyo ne-galvanizing ye-hot-dip, ebeka i-50-80 μm okanye ngaphezulu kwaye ihlala ifuna amantongomane angaphezulu okanye i-post-coating threading, iibholiti ezifakwe kwi-Dacromet zinokudityaniswa ngamantongomane aqhelekileyo ngaphandle kokuphazamiseka. I-coating iphinda ingene kwimiva, imisonto yangaphakathi, kunye neejometri ezintsonkothileyo ekunzima ukuzityabeka ngokulinganayo ngeendlela ze-electrolytic.

4.5 Ukubambelela olomeleleyo kunye nokuRecoatability

Ifilimu ye-Dacromet ephilileyo ibambelela ngokunyanisekileyo kwi-substrate yentsimbi. Ikwabonelela ngesiseko esigqwesileyo kwiidyasi ze-organic okanye iipeyinti ezilandelayo xa ukhowudo lombala olongezelelweyo, ulawulo lokukhuhlana, okanye iimfuno zobuhle zikhona. I-topcoats elawulwayo (njenge-Dacrolub okanye i-Plus systems) isetyenziswa rhoqo ukufezekisa ubudlelwane obuhambelanayo be-torque-tension ngexesha lokuhlanganisa.

4.6 Izibonelelo zeNdalo kunye neNkqubo

Ikhemistri esekwe emanzini kunye nenkqubo yokufaka iluphu evaliweyo ivelisa inkunkuma enobungozi kakhulu kunemigca yokucwenga eqhelekileyo. Ngelixa uqulunqo lweDacromet yakudala iqulethe i-chromium enehexavalent, ezinye iindlela zale mihla ezingenazo ichromium okanye eziphantsi kwechromium (iGeomet kunye nezinye ezifanayo) zidibana nemigaqo engqongqo yokusingqongileyo efana ne-RoHS, ELV, kunye ne-REACH ngelixa ihambisa ukusebenza okufanayo.

5. Ukuthelekisa kunye neeNgqungquthela zeMveli

Le theyibhile ilandelayo ishwankathela umahluko ongundoqo wokusebenza phakathi kwe-Dacromet kunye nezona zinc ziqhelekileyo zokwaleka zemveli:

Ipropati	Dacromet	Electro-galvanizing	Hot-dip Galvanizing
Ukutyeba kokutyabeka	4–8 μm	5–15 μm	50–80 μm
Isitshizi setyuwa (akukho mhlwa obomvu)	≥1,000–1,200 h	100–300 h	500–800 h
I-Hydrogen Embrittlement	Akukho nanye	Umngcipheko ophezulu	Phantsi-phakathi
Ukumelana nobushushu	Ukuya kuthi ga kuma-300 °C	≤100 °C	≤200 °C
Umsonto Fit Impact	Ubuncinci	Phantsi	Kubalulekile
Ukufaneleka kwiiBolts zeHS	Egqwesileyo	Ilinganiselwe	Phakathi

Uluhlu loku-1. Uphononongo oluthelekisayo lweengubo eziqhelekileyo ezisekelwe kwi-zinc kwii-fasteners.

7. Ukuqukumbela

I-Dacromet ye-hexagonal bolts imele isisombululo esivuthiweyo, esiphezulu sezicelo ezifuna ukukhuselwa kwexesha elide, ukuzinza kwe-thermal, kunye nokungabikho kwe-hydrogen embrittlement. I-zinc-aluminiyam yeflake ebhityileyo kodwa esebenza kakhulu iyoyisa imida emininzi enxulunyaniswa ne-electro-galvanizing eqhelekileyo kunye ne-hot-dip galvanizing, ngelixa ihlala ihambelana neemfuno zomda kunye neendibano zeziqhoboshi ezichanekileyo.

Njengoko amashishini aqhubeka nokutyhala ubomi benkonzo obude, ukugcinwa okuncitshisiweyo, kunye nokuthotyelwa kwemithetho engqongqo yendalo esingqongileyo, ukwamkelwa komgangatho ophakamileyo we-zinc-flake-coatings-kubandakanywa nokwahluka kwe-chrome-free-kulindeleke ukuba kwandiswe. Kwiinjineli kunye nababhali benkcazo, ukukhetha i-Dacromet-coated-coated hexagonal bolts sisicwangciso esiqinisekisiweyo sokuphucula ukuthembeka ngokubambisana kwiindawo ezinobungozi, ezinobushushu obuphezulu okanye obuphezulu.

Xa ucacisa ezi fasteners, ingqalelo kufuneka ihlawulwe kwibakala yokugquma (ubunzima coating), topcoat ozikhethelayo for friction control, isiseko impahla udidi lwepropathi, kunye nokuqinisekisa ukuthotyelwa imigangatho efanelekileyo ngamazwe okanye umthengi. Ukukhethwa okufanelekileyo kunye nesicelo esilawulwa ngumgangatho siqinisekisa ukuba amandla okusebenza ngokupheleleyo kwitheknoloji yeDacromet ifezekiswa kwinkonzo.