Okwu Mmalite nke Dacromet Hexagonal Bolts

2026-09-09

1. Okwu mmalite

Na injinia ọgbara ọhụrụ na n'ichepụta, ntụkwasị obi nke njikọ igwe na-adaberekarị n'ịdị mma na ịdịte aka nke fasteners. N'ime ọgwụgwọ dị iche iche dị n'elu maka bolts ígwè, mkpuchi Dacromet apụtala dị ka teknụzụ na-eduga maka inye nchebe corrosion pụrụ iche na-emebighị ike ọrụ. Dacromet hexagonal bolts-hexagon head bolts emeso ya na nke a dị elu zinc-aluminom flake mkpuchi-bụ nke akọwapụtara n'ọtụtụ ebe na ụlọ ọrụ ebe arụmọrụ ogologo oge n'okpuru ọnọdụ gburugburu ebe obibi siri ike dị mkpa.

Isiokwu a na-enye nkọwa zuru ezu nke Dacromet hexagonal bolts, na-ekpuchi ọdịdị nke nkà na ụzụ mkpuchi, usoro mmepụta ihe, uru ọrụ dị mkpa, ntụnyere na mkpuchi omenala, ngwa ngwa, na ụkpụrụ ụlọ ọrụ dị mkpa. Ịghọta akụkụ ndị a na-enyere ndị injinia, ndị na-azụ ahịa, na ndị ọkachamara na-arụzi ọrụ aka ime mkpebi ziri ezi mgbe ha na-ahọrọ ihe nkwụnye maka ngwa dị oke mkpa.

2. Gịnị bụ mkpuchi Dacromet?

Dacromet (ụghalaahịa edebanyere aha nke ghọrọ onye na-akọwa ọnụọgụgụ maka teknụzụ) bụ sistemu mkpuchi flake na-abụghị nke elektrọn, nke inorganic zinc. Ọ bụ isi nke ultra-fine zinc na aluminom flakes gbasasịrị na ihe nkedo dabere na mmiri nwere ogige chromium. Mgbe ngwa na ọgwụgwọ, flakes na-etolite a multilayered lamellar Ọdịdị nke na-enye ma mgbochi na àjà (cathodic) nchebe na nchara n'okpuru ala.

N'adịghị ka electroplating a na-emekarị ma ọ bụ na-ekpo ọkụ na-ekpo ọkụ, usoro Dacromet anaghị agụnye nchịkọta acid ma ọ bụ ntinye electrolytic. Kama nke ahụ, a na-asachapụ akụkụ ahụ n'ụzọ igwe, na-emikpu ma ọ bụ fesa ya na nkwusioru mkpuchi mmiri (na-ejikarị usoro ntupu), wee gwọọ ya na ihe dịka 300 Celsius. N'oge a na-agwọ ọrịa, ihe nkedo ahụ na-etolite nnukwu matriks inorganic nke na-akpọchi flakes metal na ebe ma jikọta nke ọma na metal ala.

Ihe nkiri a na-esi na ya pụta dị ezigbo mkpa—na-abụkarị naanị 4–8 μm (micrometers)—ma na-ewepụta nguzogide corrosion ọtụtụ ugboro karịa mkpuchi zinc ọdịnala nke nha ma ọ bụ ọkpụrụkpụ ka ukwuu. Ọdịdị emechachara na-abụkarị otu edo dara ọla ọcha-isi awọ. Ụdị dị iche iche nke oge a, gụnyere chrome-reduced na sistemu na-enweghị chrome (dị ka Geomet), na-eleba anya na-agbanwe ụkpụrụ gburugburu ebe obibi ma na-ejigide uru arụmọrụ bụ isi.

3. Hexagonal Bolts na Ọrụ nke ọgwụgwọ elu

Ihe mkpuchi hexagonal (nke a na-akpọkwa hex head bolts ma ọ bụ ihe mkpuchi isi hexagon) nwere isi akụkụ isii nke na-enye ohere ka e jiri akwa wrenches ma ọ bụ sọket mee ihe dị elu. Ha so n'ihe nkedo a na-ejikarị eme ihe n'ihe owuwu, ụgbọ ala, igwe, na ngwa ihe owuwu. Akara ogo sitere na ike dị ala (dịka ọmụmaatụ, ihe onwunwe 4.8) na ike dị elu (8.8, 10.9, 12.9 na karịa), nke a na-emepụta site na carbon ígwè ma ọ bụ ígwè alloy na-ekpo ọkụ na-emeso ya iji nweta ihe eji arụ ọrụ achọrọ.

Ọgwụgwọ n'elu dị oke egwu n'ihi na ígwè enweghị ihe na-adaba na corrosion, nke nwere ike ibelata ikike ibu ibu, jide eriri, ma mesịa bute ọdịda nkwonkwo. Nhọrọ ọdịnala dị ka electro-galvanizing na hot-dip galvanizing nwere oke ama ama: ihe egwu embrittlement hydrogen na nchara siri ike, ndụ corrosion dị ntakịrị na gburugburu ebe ike ike, na nnyonye anya akụkụ nke akwa mkpuchi na eri mara mma. E mepụtara mkpuchi dacromet iji merie adịghị ike ndị a.

4. Isi uru nke Dacromet Hexagonal Bolts

4.1 Nguzogide nrụrụ dị elu

N'agbanyeghị ọkpụrụkpụ mkpuchi nke naanị 4-8 μm, Dacromet na-enye nchebe corrosion nke na-adịkarị 7-10 ugboro karịa electro-galvanizing. Na nnwale ịgba nnu na-anọpụ iche (ASTM B117 / ISO 9227), mkpuchi Dacromet etinyere nke ọma na-agafe awa 1,000 na-erute awa 1,200 ma ọ bụ karịa - na-enweghị nchara na-acha ọbara ọbara. Ụfọdụ sistemụ arụmọrụ dị elu na-enweta ọbụna ogologo oge. Ogologo ogologo oge a na-enweghị atụ sitere na mgbochi multi-layer nke zinc na flakes aluminom jikọtara ya na mmetụta na-agafe agafe nke eriri inorganic.

4.2 Adịghị nke Hydrogen Embrittlement

Otu n'ime uru kachasị dị mkpa maka ihe nkedo dị elu bụ enweghị ihe ize ndụ nke embrittlement hydrogen. Usoro electroplating omenala gụnyere ihicha acid na ntinye nke cathodic, nke abụọ nwere ike iwebata hydrogen atom n'ime lattice ígwè. Hydrogen a nwere ike ịkpata mgbaji na-egbu oge n'okpuru nrụgide tensile-karịsịa dị ize ndụ na klas 10.9, 12.9 na karịa. N'ihi na usoro Dacromet na-ejighị acid pickling ma ọ bụ electrolysis, bolts ike dị elu nwere ike kpuchie ya n'enweghị nsogbu ma na-ejigide iguzosi ike n'ezi ihe ha.

4.3 Nguzogide Okpomọkụ kacha mma

Ihe mkpuchi dacromet na-anọgide na-eguzosi ike ma na-echebe na okpomọkụ ọrụ na-aga n'ihu ruo ihe dịka 300 Celsius (na mkpughe oge dị mkpirikpi ọbụna karịa). Eletrọnkị nke zinc nke a na-emebu na-amalite imebi ma tụfuo nguzogide corrosion nke ọma n'okpuru 100-150 Celsius. Nkwụsi ike a na-ekpo ọkụ na-eme Dacromet hexagonal bolts dị mma maka akụkụ injin, sistemu iyuzucha, ọkụ ụlọ ọrụ mmepụta ihe na gburugburu okpomọkụ ndị ọzọ dị elu.

4.4 Ihe nkiri dị mkpa na ndakọrịta eri

Ihe mkpuchi ahụ dị gịrịgịrị, nke otu na-echekwa akụkụ eri dị oke egwu na nnabata. N'adịghị ka galvanizing na-ekpo ọkụ na-ekpo ọkụ, nke na-etinye 50-80 μm ma ọ bụ karịa ma na-achọkarị nnukwu mkpụrụ ma ọ bụ na-achụso eri mkpuchi, a na-ejikọta bolts nke Dacromet na mkpụrụ osisi na-enweghị nnyonye anya. Ihe mkpuchi ahụ na-abanyekwa n'ebe ezumike, eri dị n'ime, na geometry dị mgbagwoju anya bụ ndị siri ike ịdepụta n'otu n'otu site na usoro electrolytic.

4.5 Adhesion siri ike na mgbake

Ihe nkiri Dacromet a gwọrọ na-arapara n'ahụ nchara nchara. Ọ na-enyekwa ezigbo ntọala maka uwe elu ma ọ bụ eserese organic na-esote mgbe ntinye agba, njikwa esemokwu, ma ọ bụ ihe ịchọ mma dị. A na-etinye uwe elu mkpuchi esemokwu (dị ka sistemụ Dacrolub ma ọ bụ Plus) iji nweta mmekọrịta ọgbaghara na-agbanwe agbanwe n'oge mgbakọ.

4.6 Uru gburugburu na usoro

Usoro kemistri dabere na mmiri na usoro ntinye aka mechiri emechi na-emepụta ihe mkpofu na-adịchaghị njọ karịa ahịrị ịsa efere. Ọ bụ ezie na usoro Dacromet kpochapụwo nwere chromium hexavalent, chromium nke oge a na-enweghị chromium ma ọ bụ nke dị ala (Geomet na ndị yiri ya) na-ezute ntuziaka gburugburu ebe obibi siri ike dịka RoHS, ELV, na REACH ka ha na-ebuga arụmọrụ yiri ya.

5. Tụnyere uwe ejiji ọdịnala

Tebụlụ na-esonụ na-achịkọta isi ọdịiche dị n'etiti Dacromet na mkpuchi zinc ọdịnala abụọ a na-ahụkarị:

Ngwongwo	Dacromet	Electro-galvanizing	Galvanizing na-ekpo ọkụ
Mkpuchi Ọkpụrụkpụ	4-8 mm	5-15 μm	50-80 μm
Nri nnu (enweghị nchara uhie)	≥1,000–1,200 h	100-300 h	500-800 h
Embrittlement hydrogen	Ọ dịghị	Nnukwu ihe ize ndụ	Obere - adịghị agafe agafe
Okpomọkụ Nguzogide	Ruo 300 Celsius C	≤100C	≤200C
Mmetụta dabara adaba	Opekempe	Dị ala	Dị mkpa
Kwesịrị ekwesị maka HS Bolts	Magburu onwe	Oke	Na-agafeghị oke

Tebụl 1. Nlebanya atụnyere nke mkpuchi nke zinc nkịtị maka ihe ngbochi.

7. Mmechi

Dacromet hexagonal bolts na-anọchi anya ihe ngwọta tozuru oke, na-arụ ọrụ dị elu maka ngwa ndị na-achọ nchebe corrosion ogologo oge, nkwụsi ike nke okpomọkụ, na enweghị hydrogen embrittlement. Mkpuchi flake zinc-aluminom ha dị gịrịgịrị ma dị oke mma na-emeri ọtụtụ njedebe jikọtara ya na galvanizing electro-galvanizing na-ekpo ọkụ na-ekpo ọkụ, ebe ọ na-adaba na akụkụ na ihe mgbakọ chọrọ nke ndị na-ebu nkenke.

Ka ụlọ ọrụ na-aga n'ihu na-akwalite maka ndụ ọrụ dị ogologo, mbelata nrụzi, na nrube isi n'iwu gburugburu ebe obibi na-esiwanye ike, nnabata nke mkpuchi flake zinc dị elu-gụnyere ụdị chrome nke oge a-na-atụ anya ịgbasa. Maka ndị injinia na ndị na-ede nkọwa nkọwa, ịhọrọ bolts hexagonal nwere mkpuchi Dacromet bụ atụmatụ egosipụtara maka ịkwalite ntụkwasị obi nkwonkwo na gburugburu corrosive, okpomọkụ dị elu, ma ọ bụ ike dị elu.

Mgbe a na-akọwa ihe nkedo ndị a, ekwesịrị ka etinye nlebara anya na mkpuchi mkpuchi (oke mkpuchi), uwe mkpuchi nhọrọ maka njikwa esemokwu, klaasị ihe onwunwe, yana nkwenye nke nnabata na ụkpụrụ mba ụwa ma ọ bụ ndị ahịa dị mkpa. Nhọrọ nke ọma na ngwa njikwa mma na-ahụ na arụ ọrụ zuru oke nke teknụzụ Dacromet na-arụ ọrụ.