Dacromet Hex Nuts-Nkwupụta nka nka 

1. Okwu mmalite

Mkpụrụ hexagonal (hex nuts) so na ngwa ngwa a na-ejikarị eme ihe na mgbakọ igwe, ihe owuwu, ụgbọ ala, na ngwa ụlọ ọrụ mmepụta ihe. Mgbe ejikọtara ya na ọgwụgwọ elu dị elu dị ka mkpuchi Dacromet, ha na-ebuga nguzogide corrosion pụrụ iche ma na-edobe oke nha anya yana iguzosi ike n'ezi ihe.

1.1 Kedu ihe bụ Hex Nuts?

Akụ hex bụ ụdị ihe nkedo nwere ọdịdị mpụga hexagonal yana oghere nwere eriri n'ime. Nhazi nke akụkụ isii na-enye ohere ngwa ngwa torque dị mma site na iji wrenches ma ọ bụ sọket ọkọlọtọ. A na-emepụta mkpụrụ osisi hex dị ka ụkpụrụ mba ụwa si dị ka ISO 4032 (style 1 regular nuts), DIN 934, ma ọ bụ ASME B18.2.2, na-ekpuchi ọtụtụ metric na imperial nha.

Ihe njiri mara geometric gụnyere dayameta eri aha (d), pitch (P), obosara gafee ụlọ (s), obosara gafee nkuku (e), na ịdị elu nut (m). Klaasị ihe onwunwe (dịka, 8, 10, 12 maka ígwè) na-akọwapụta ike arụrụ arụ iji dakọọ akara akara bolt kwekọrọ.

1.2 Nchịkọta nke mkpuchi Dacromet

Dacromet bụ mkpuchi mmiri na-abụghị nke zinc-aluminom flake emepụtara na 1970s. Ọ nwere zinc na flakes aluminom gbasasịrị nke ọma kwụsịtụrụ na chromate inorganic (ma ọ bụ chromium na-enweghị). A na-etinye ya n'ụzọ bụ isi site n'ụzọ dip-spin ma ọ bụ ịgba ma gwọọ ya na ihe dịka 280-320 Celsius, ọ na-etolite obere (nke na-adịkarị 5-12 μm), uwe, ihe nkiri nchebe ọlaọcha-agba ntụ.

N'adịghị ka omenala electroplating ma ọ bụ na-ekpo ọkụ-mikpu galvanizing, Dacromet na-enye nchebe corrosion ka elu na-enweghị hydrogen embrittlement ize ndụ-eme ka ọ dị mma karịsịa maka elu-ike fasteners (ọkwa 10.9 na 12.9).

2. Dacromet mkpuchi mkpuchi

2.1 Nhazi na nhazi

Ihe mkpuchi ahụ bụ akwa zinc na aluminom flakes jikọtara ya na matriks inorganic jikọtara ya. Ọdịdị lamellar a na-emepụta ọtụtụ ihe mgbochi anụ ahụ megide mmiri na ion na-emebi emebi, ebe zinc na-enye nchebe ịchụàjà (galvanic). Aluminom na-eme ka ihe mgbochi na-eguzogide okpomọkụ.

Ọgụgụ 2. Ọdịdị dị mfe nke multi-layer nke mkpuchi Dacromet na nchara ígwè

2.2 Usoro ngwa

Usoro usoro a na-ahụkarị bụ:

1. Nkwadebe dị n'elu - nkwụsị nke alkaline na nhicha abrasive (enweghị pickling acid).
2. Ngwa mkpuchi - ntinye-spin ma ọ bụ ịgbasa mmiri nke zinc-aluminom slurry dabeere na mmiri.
3. Centrifuging - mwepụ nke ngafe mkpuchi iji hụ na nha nha.
4. Ngwọta - ime na ~ 300 Celsius C maka nkeji 15-30 iji mepụta ihe nkiri inorganic siri ike. Enwere ike itinye akwa mkpuchi ọtụtụ maka akara ngosi dị elu.

2.3 Isi uru

• Nguzogide corrosion pụtara ìhè: 1,000-2,000+ awa nnu ịgbasa (ASTM B117) ka nchara na-acha uhie uhie - na-adịkarị 5-10 ugboro ka mma karịa zinc plating.
• Ọ dịghị hydrogen embrittlement: Usoro na-abụghị electrolytic dị mma maka elu-ike ígwè (10.9 / 12.9).
• Mkpuchi dị nro (5-12 μm): Na-echekwa eriri eriri na nha nha nha; ọ dịghị mkpa overtapping.
• Nnukwu okpomọkụ na-eguzogide: Stable ruo 300 °C na-aga n'ihu ọrụ.
• Mkpuchi n'ụdị: Nbanye mara mma n'ime ebe ezumike, eri, na geometries dị mgbagwoju anya site na ntinye-spin.
• Ọnụọgụ esemokwu na-agbanwe agbanwe: Enwere ike ijikọ ya na akwa mkpuchi mmanye maka ịrụ ọrụ nrụrụ aka na-achịkwa.

Onyonyo 3. Ntụle ihe atụ nke arụmọrụ nnu-spray

2.4 Tụnyere mkpuchi mkpuchi ndị ọzọ

Isiokwu 1. Arụmọrụ ntụnyere nke nkịtị fastener mkpuchi

3. Mkpụrụ Hex - Ụkpụrụ, Akụkụ & Ike

3.1 Ụkpụrụ mba ụwa

Ụkpụrụ ndị a na-ahụkarị maka mkpụrụ osisi hex metric bụ ISO 4032 (style 1 regular nuts) na ndị okenye ma ka na-ejikarị DIN 934. Ụkpụrụ ndị a na-akọwa akụkụ, ndidi, na akara ngwaahịa (A, B, C). A kọwapụtara klas akụrụngwa maka mkpụrụ nchara na ISO 898-2 (dịka ọmụmaatụ, klaasị 6, 8, 10, 12).

Rịba ama: DIN 934 na ISO 4032 dị iche iche n'ofe ọnụ ụlọ maka ụfọdụ nha (dịka M10, M12, M22). Na-enyocha ndakọrịta mgbe niile mgbe ị na-agwakọta ụkpụrụ.

3.2 Metric akụkụ (ISO 4032 Ụdị 1)

Tebụl 2. Akụkụ metric hex nut ahọpụtara (ISO 4032, mm). s = obosara gafee flat; e = obosara gafee nkuku; m = nut elu.

3.3 Klaasị ihe onwunwe & ndakọrịta

A ga-ejikọta mkpụrụ akụ na ike bolt iji hụ na njikọ ahụ dara n'ụzọ a na-achịkwa (ọkacha mma na bolt). Njikọ ndị nkịtị n'okpuru ISO 898-2:

• Klas Bolt 8.8 → Nut klas 8 ma ọ bụ karịa
• Klas Bolt 10.9 → Nut klas 10 ma ọ bụ karịa
• Klas Bolt 12.9 → Nut klas 12

Ihe mkpuchi dacromet bara uru karịsịa maka mkpụrụ klaasị 10 na 12 n'ihi na usoro ahụ anaghị ewebata ihe egwu embrittlement hydrogen nke nwere ike imebi ihe ndị dị elu.

4. Ngwa nke Dacromet Hex Nuts

Mkpụrụ hex nwere mkpuchi dacromet na-eme nke ọma n'ebe ọ bụla a chọrọ n'otu oge nguzogide corrosion dị elu, nkenke akụkụ, na ntụkwasị obi igwe:

Ụgbọala & Ụgbọ njem

Ihe ndị mejupụtara chassis, sistemu nkwusioru, mgbakọ breeki, ngwa njin, na akụkụ ahụ dị n'okpuru nke ekpughere na nnu okporo ụzọ na oke okpomọkụ.

Ike ikuku & akụrụngwa

Ụlọ elu bolts na ntọala ntọala maka ikuku ikuku nke dị n'akụkụ osimiri na nke dị n'ụsọ oké osimiri, ebe ikpughe-fesa nnu nwere ike gafere awa 2,000 nke nchekwa chọrọ.

Ihe owuwu & igwe dị arọ

Njikọ ụlọ, akụrụngwa ọrụ ugbo, igwe na-egwuputa ihe, na nrụnye n'èzí dabere na ihu igwe na mkpughe kemịkal.

Mmiri & Kemịkalụ gburugburu

Akụrụngwa ụgbọ ala, ikpo okwu dị n'ụsọ osimiri, na akụrụngwa nhazi ebe mkpuchi ọdịnala na-emebi ngwa ngwa.

4.1 Ntuziaka nhọrọ

Tebụl 3. Ntuziaka nhọrọ ngwa ngwa maka mkpụrụ hex kpuchie

5. Nkwubi okwu

Mkpụrụ hex Dacromet na-ejikọta ntụkwasị obi n'ibu na nhazi geometry nke mkpụrụ hexagonal ọdịnala yana nchebe corrosion dị elu nke teknụzụ flake zinc-aluminom. Ihe mkpuchi ha dị gịrịgịrị, nke edo edo na-echekwa njikọ erimeri na ịdịgidesi ike, ebe ha na-ebuga ọrụ ịgbasa nnu dị elu karịa nke a na-etinye n'ụdị zinc nke na-enwere onwe ya pụọ ​​​​na nchegbu hydrogen-embrittlement.

Maka ndị injinia na ndị na-azụ ahịa na-akọwapụta ihe mkpuchi maka ụgbọ ala, ume ọhụrụ, akụrụngwa, ma ọ bụ gburugburu ụlọ ọrụ mmepụta ihe siri ike, mkpụrụ hex nwere mkpuchi Dacromet na-enye nguzozi egosipụtara nke ịdịte aka, nkenke na ịdị ogologo oge.

Mgbe ị na-ahọrọ ngwaahịa, na-akwado ọkwa mkpuchi mgbe niile (A/B ma ọ bụ ihe nhata), ọkwa ncha nnu, ọnụ ọgụgụ esemokwu (ọ bụrụ na etinyere topcoat mmanye), yana ndakọrịta na klas mating bolt na ọnọdụ gburugburu ebe obibi nke ngwa ikpeazụ.

Ntuziaka & Ụkpụrụ: ISO 4032, ISO 898-2, DIN 934, ASTM B117, mpempe akwụkwọ data emeputa maka sistemụ Dacromet / zinc-flake (dịka, DACROMET®, GEOMET®).