Dacromet Hex Bolts na-eduga ebili mmiri na-esote nke mgbochi mgbochi corrosion 

N'adịghị ka zinc electroplated ọdịnala, usoro Dacromet anaghị ewebata hydrogen n'ime mkpụrụ. Nke a na-ewepụ ihe ize ndụ nke mgbaka hydrogen - uru dị oke mkpa mgbe ị na-ekpuchi bolts hex dị elu nke 8.8, 10.9, na 12.9. Nsonaazụ bụ a hex bolt na-egbochi nchara nke na-ejigide iguzosi ike n'ezi ihe nke sistemu zuru oke ma na-enye nguzogide corrosion dị elu karịa nke emechara.

Ihe kpatara Hex Bolts ji rite uru na Dacromet

Hex bolts—kpọmkwem bolts arụrụ arụ hex dị arọ—a kọwapụtara nke ọma na àkwà mmiri, ụlọ elu ikuku ike, igwe dị arọ, na chassis ụgbọ ala. Ngwa ndị a na-achọ ihe nkedo na-agwakọta omume mgbakasị ahụ ziri ezi na ọtụtụ iri afọ mgbochi corrosion ndu. Dacromet na-emezu ihe abụọ a chọrọ:

• mkpuchi uwena jiometrị eri dị mgbagwoju anya na-enweghị ihe nrụpụta jikọtara ya na galvanizing na-ekpo ọkụ na-ekpo ọkụ, na-echekwa izi ezi akụkụ na eriri dabara adaba.
• Ọnụọgụ esemokwu achịkwara(nke μ = 0.12-0.18 nwere akwa mkpuchi), na-eme ka ibu mwekota na-agbanwe agbanwe na ịrụ ọrụ na-agbatị ọtụtụ.
• Enweghị ihe egwu mgbaka hydrogen, na-eme ka Dacromet bụrụ ọkachamma mgbochi ncharaimecha maka bolts hex dị elu na-eji na nkwonkwo nchekwa dị oke egwu.
• Okpomọkụ na-eguzogide ruo 300 ° C, karịa oke bara uru nke zinc electroplated.

Ịrụ arụrụ arụ: Dacromet vs. Mkpuchi Omenala

Nnwale ụlọ nyocha nọọrọ onwe ya na-egosipụta nke ahụ mgbe niile Ihe mkpuchi hex nwere dacromet na-arụ ọrụ nke ọma ma zinc electroplated na ihe na-ekpo ọkụ galvanized fasteners na nnu na-anọpụ iche (ASTM B117 / ISO 9227) na ule corrosion cyclic. Ntụle na-esonụ na-achịkọta nsonaazụ ahụkarị maka sistemu mkpuchi dakọtara:

Tebụl 1. Ọrụ atụnyere nke isi mkpuchi mgbochi corrosion maka hex bolts (ụkpụrụ ụlọ nyocha).

N'ime otu ọmụmụ ntozu a kpọtụrụ aha n'ọtụtụ ebe maka ASTM A490 bolts nwere ike dị elu, akụkụ mkpuchi Dacromet gosipụtara. nchara uhie efu mgbe 1,000 awa nke na-aga n'ihu nnu-ịgba ikpughe, mgbe mechanically galvanized bolts gosipụtara ihe karịrị 85% red nchara n'elu ịrịba na-ebupụta. Ọbụlagodi mgbe awa 5,000 gachara, ụdị Dacromet gosipụtara naanị ihe dị ka 6% nchara na-acha uhie uhie — na-eme nke ọma karịa ndị mmekọ na-ekpo ọkụ na-ekpo ọkụ na-erute nso mkpokọta elu.

Sayensị dị n'azụ Nchedo Mgbochi Nchara

Nke pụrụiche mgbochi corrosion arụmọrụ Dacromet sitere na usoro mmekọ atọ:

1. Nchekwa mgbochi- Zinc na aluminom flakes na-agbakọta na-etolite ọta dị ukwuu, nke na-egbochi mmiri na ntinye ion chloride.
2. Ịchụ-àjà (cathodic) nchebe- Zinc flakes ọkachamma na-emebi emebi, na-echebe ígwè dị n'okpuru ya ọbụlagodi na mkpuchi ahụ mebiri emebi na mpaghara.
3. Passivation / ọgwụgwọ onwe- Ngwakọta chromium-oxide dị n'ime ihe nkedo na-emepụta ihe nkiri na-agafe agafe nke na-eme ka ọganihu corrosion kwụsịlata.

Mmetụta Ahịa na Mmetụta Ahịa

Ka itinye ego akụrụngwa zuru ụwa ọnụ na-eme ngwa ngwa yana nyiwe ụgbọ ala na-akwaga n'ụkpụrụ siri ike dị elu, achọrọ maka ntụkwasị obi. mgbochi corrosion na ihe nchara ihe ngwọta fastener na-aga n'ihu na-ebili. Ndị na-ahụ maka ụlọ ọrụ na-achọpụta ọtụtụ usoro agbam ume:

• Uto nkọwapụta- Ụkpụrụ injinịa ndị ọzọ (gụnyere mmelite metụtara ASTM F3125 bolts structural) ugbu a na-amata usoro zinc-flake dị ka Dacromet dị ka ihe ndị ọzọ a na-anabata na galvanizing ọdịnala maka ngwa ike dị elu.
• Atụmatụ nkwado- Usoro Dacromet dabeere na mmiri na-emepụta ihe mkpofu na-adịchaghị njọ karịa ọtụtụ ahịrị electroplating, na-eme ka ụkpụrụ gburugburu ebe obibi sie ike.
• Mgbakọta ọnụ nke nwe– Ọ bụ ezie na unit na-eri nwere ike ịdị elu karịa isi zinc plating, ogologo ọrụ ndụ na ibelata mmezi nke Dacromet hex bolts na-ebutekarị ọnụ ahịa ndụ dị ala na gburugburu ebe ndị na-emebi emebi.

Ntuziaka bara uru maka nkọwapụta

Mgbe ị na-ahọrọ Ihe mkpuchi hex nwere dacromet, Ndị injinia kwesịrị ịchọpụta ọkwa mkpuchi (dịka ọmụmaatụ, ọkwa A ma ọ bụ B dị ka mkpuchi mkpuchi), kwadoro ndakọrịta nke mmanu topcoat ọ bụla na mmekọrịta nke torque-tension, ma hụ na ma bolts na kenha mkpụrụ / washers na-enweta mmecha dakọtara. Nchekwa na njikwa kwesịrị ekwesị ka dị mkpa: ebe mkpuchi ahụ dị oke mgbochi nchara, n'ibu mmebi tupu echichi nwere ike na mpaghara ibelata nchedo.

Mmechi

Teknụzụ Dacromet etoola site na imecha ụgbọ ala pụrụ iche wee bụrụ nke a na-ahụkarị mgbochi corrosion ngwọta maka elu-arụmọrụ hex bolts. Ngwakọta ya pụrụ iche nke otu ihe nkiri dị mkpa, enweghị hydrogen embrittlement, ikike okpomọkụ dị elu, yana nguzogide nfe nnu nke puku awa puku kwuru puku awa gosipụtara na-etinye ya dị ka nhọrọ na-eduga n'ebe ọ bụla ogologo oge. ihe nchara ntụkwasị obi bụ enweghị nkwekọrịta.

Dị ka ndị nwe akụrụngwa, ndị na-emepụta ugbo ikuku, na OEM ụgbọ ala na-aga n'ihu na-ebute ịdịte aka na mbelata mmezi, Dacromet hex bolts A na-atụ anya na ọ ga-eweghara oke na-agbasawanye nke ahịa ngwa ngwa ngwa ngwa-na-ebuga ihe mgbochi nchara arụmọrụ nke injinia ọgbara ọhụrụ chọrọ.