Dacromet Flange Bolts

2026-11-09

1. Okwu mmalite

N'ime ngwa ụlọ ọrụ mmepụta ihe nke oge a, iguzosi ike n'ezi ihe nke ogologo oge nke nkwonkwo na-adabere n'ụzọ dị irè nchebe corrosion na arụmọrụ mgbochi nchara. Omenala zinc plating na ikpo ọkụ na-ekpo ọkụ na-adakarị mkpụmkpụ na gburugburu oke ike dị ka akụrụngwa nke osimiri, ikpo okwu ndị dị n'ụsọ osimiri, osisi kemịkalụ, na anụ ahụ ụgbọ ala ekpughere na nnu okporo ụzọ. Dacromet flange bolts jikọta uru nhazi nke flange-head imewe na ihe pụtara ìhè nchara-egbochi na mgbochi corrosion Njirimara nke mkpuchi zinc-aluminom flake.

Dacromet (nke a makwaara dị ka mkpuchi flake zinc) bụ ọgwụgwọ na-abụghị nke elektrọnik, nke dabere na mmiri. Ọ na-edobe oyi akwa zinc na aluminom nke dị gịrịgịrị ma dịkwa irè nke ọma site na matrix chromate, na-ebuga pụrụ iche. mgbochi mgbochi, àjà nchebe cathodic, na passivation na-agwọ onwe ya. Tinyere na flange bolts, mkpuchi a na-enye ogologo oge a pụrụ ịdabere na ya iguzogide nchara na-emebighị eriri eriri, izi ezi nke torque, ma ọ bụ iwebata ihe egwu embrittlement hydrogen.

Ọgụgụ 1. bolts mkpuchi mkpuchi Dacromet dị elu nwere otu ọla ọcha na-acha ntụ ntụ mgbochi corrosion.

2. Flange Bolts na teknụzụ mkpuchi mkpuchi Dacromet

Ihe mkpuchi flange nwere flange okirikiri dị mkpa n'okpuru isi hexagonal nke na-arụ ọrụ dị ka igwe eji arụ ọrụ. Nhazi a na-ekesa ike mpịachi n'elu nnukwu ihe na-ebu ibu, na-ebelata mmebi elu ma na-eme ka nguzogide na-akpalite ịma jijiji. Mgbe bolts ndị a na-enweta mkpuchi Dacromet, nchikota na-enye ngwa ngwa nke na-enye ma ntụkwasị obi nke igwe na nke ka elu mgbochi nchara na corrosion na-eguzogide arụmọrụ. Ihe mkpuchi ahụ dị mkpa (nke na-abụkarị 5-12 μm) na-edobe geometry eri.

2.1 Mkpuchi mkpuchi na Usoro

Dacromet bụ mkpọsa mmiri nke flakes zinc, flakes aluminom, na chromium oxides. Usoro na-abụghị electrolytic na-agụnyekarị: (1) ihicha elu n'ejighị acid pickling; (2) ngwa site na ntinye-spin, mwepu-mmiri ma ọ bụ ịgba; na (3) na-agwọta n'ihe dịka 300°C iji jikọta flakes ahụ n'ọkwa ndị na-ekekọta. Ihe nkiri ọla ọcha na-acha ntụ ntụ na-esi na ya pụta na-enye multi-layer oxidation iguzogide na a pụrụ ịdabere na ya ihe mgbochi mmiri.

2.2 Usoro nke nchedo corrosion

Dacromet na-enweta ihe pụrụ iche mgbochi corrosion ịrụ ọrụ site na usoro synergistic atọ:

Nchekwa mgbochi: Zinc na flakes aluminom gbakọtara na-emepụta ihe mgbochi anụ ahụ nke na-egbochi mmiri, oxygen, na ion corrosive dị ka chlorides.
Nchekwa ịchụ aja (Cathodic): Zinc flakes na-emebi emebi nke ọma, na-eme ihe dị ka anode ịchụàjà nke na-echebe mkpụrụ nchara site na nchara.
Passivation na ọgwụgwọ onwe: Ngwakọta chromate na-etolite ihe nkiri na-agafe agafe ma nwee ike ịkwaga na obere ncha, na-enye na-aga n'ihu mgbochi ncharana ikike imezi onwe ya.

3. Isi uru nke Dacromet Flange Bolts

E jiri ya tụnyere ọgwụgwọ elu elu, Dacromet flange bolts na-enye ngwakọta pụrụ iche nke uru arụmọrụ:

Nguzogide nfesa nnu kachasị elu: Na-adịkarị karịa 1,000-1,200 awa nke nnwale ịgba nnu na-anọpụ iche (ISO 9227) na-enweghị nchara na-acha uhie uhie - na-adịkarị 7-10 ugboro karịa mkpuchi electro-galvanized.
Ihe ize ndụ embrittlement hydrogen efu: Usoro na-abụghị nke electrolytic na-ewepụ ọgbọ hydrogen, na-eme Dacromet dị mma maka ọkwa dị elu nke 8.8, 10.9, na 12.9 bolts.
Mkpuchi mkpuchi ahụ dị gịrịgịrị, nke kwụsiri ike n'akụkụ: Na naanị 5-12 μm, mkpuchi ahụ na-echekwa izi ezi nke eri ma na-enye ohere ka ejiri mkpụrụ ọkọlọtọ mee ihe na-enweghị ịmegharị.
Ezigbo Nguzogide Okpomọkụ: Na-edobe iguzosi ike n'ezi ihe nchebe ruo 300C, dị elu karịa mkpuchi zinc nke na-emebi emebi karịa 100-200 Celsius.
Mmetụta ihu igwe na nguzogide kemịkalụ pụtara ìhè: Na-eguzogide ikuku ụlọ ọrụ, nnu okporo ụzọ, acid dị nro na alkalis ma na-enye ogologo oge mgbochi ncharaarụmọrụ n'èzí.
Ezigbo njikwa esemokwu: Site na uwe mkpuchi mmanye mmanye nhọrọ, enwere ike ịchịkwa ọnụọgụ nke esemokwu maka ibu mwekota a pụrụ ịdabere na ya.

4. Ntụle arụmọrụ na mkpuchi omenala

Tebụlụ dị n'okpuru na-achịkọta isi ihe dị iche na nchebe corrosion na njirimara mkpuchi.

Ngwongwo	Dacromet	Electro-galvanizing	Galvanizing na-ekpo ọkụ
Mkpuchi Ọkpụrụkpụ	5-12 μm	5-15 μm	40-80 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	Ọkara ize ndụ
Okpomọkụ Nguzogide	Ruo 300 ° C	≤100C	≤200C
Mmetụta dabara adaba	Obere / kacha mma	Obere	Ọtụtụ mgbe na-achọkwa ịpịgharị ọzọ

Tebụl 1. Arụmọrụ ntụnyere nke Dacromet megide mkpuchi zinc nke a na-ahụkarị maka ihe nkedo.

5. Ngwa a na-ahụkarị

A na-akọwapụta bolts Dacromet ebe ọ bụla dị elu iguzogide corrosion a ga-ejikọta ya na ntụkwasị obi igwe:

Ụgbọala: Chassis, nkwusioru, sistemu breeki na ihe ndị dị n'okpuru ahụ ekpughere na nnu okporo ụzọ.
Ike ikuku na oke osimiri: Flanges ụlọ elu, mgbakọ nacelle na njikọ nhazi na ikuku saline.
Ihe owuwu & akụrụngwa: Akwa akwa, ụlọ dị n'ụsọ oké osimiri, okporo ụzọ nche na-achọ ogologo oge mgbochi nchara.
Igwe na ụgbọ okporo ígwè dị arọ: Akụrụngwa dị na gburugburu iru mmiri ma ọ bụ kemịkalụ na-eme ihe ike ebe mgbochi corrosionarụmọrụ dị oke egwu.

6. Nkọwa nkịtị

A na-arụpụta bolts Dacromet ka ọ bụrụ ọkwa mba ụwa bụ isi na akara ike:

Oke	Ọnụ ahịa / ụkpụrụ
Ụkpụrụ	DIN 6921, ISO 4162, GB/T 5787/5789, ASME B18.2.1
Ogo ogo	8.8, 10.9, 12.9 (metric); SAE ọkwa 5/8 (inch)
Ogologo eriri	M5–M24 (metric); 1/4"-5/8" (eze ukwu)
Ogologo Ogologo	10 mm - 200 mm (ogologo omenala dị)
Mkpuchi Ọkpụrụkpụ	Na-adịkarị 5-12 μm (ụdị ọkwa A / B)
Ọdịdị	Ọlaọcha ọla-acha ntụ ntụ (matte)

7. Nwụnye Best Omume & Mmechi

Iji bulie ya mgbochi corrosion ndụ ọrụ nke Dacromet flange bolts: jiri mkpụrụ akụ na-ekpuchi Dacromet na washers ebe enwere ike; soro ụkpụrụ torque akwadoro (esemokwu a na-achịkwa na-akwado ibu mwekota ziri ezi); zere mmebi n'ibu oke n'oge njikwa; ma chekwaa ihe nkedo na ọnọdụ akọrọ tupu ejiri ya.

Na nchịkọta, Dacromet flange bolts na-anọchi anya ihe tozuru oke, ngwa ngwa ngwa ngwa na-arụ ọrụ nke ọma nke na-eleba anya nke ọma ihe abụọ chọrọ nke ntụkwasị obi igwe na ogologo oge. nchebe corrosion. Site na ijikọta uru na-ekesa ibu nke imewe flange dị mkpa na mkpuchi zinc-aluminom flake dị gịrịgịrị, nke dị oke mma, ihe nkedo ndị a na-ebuga pụtara ìhè. mgbochi nchara ịrụ ọrụ, wepụ ihe egwu mgbaka hydrogen, ma jikwaa njikwa n'ụzọ ziri ezi.

N'ebe ebe ihe nkwụnye eletrọ-galvanized ma ọ bụ nke na-ekpo ọkụ ga-ata ahụhụ akaghi aka nchara na nbibi — n'ụsọ osimiri, mmiri, ụgbọ ala, na ntọala ụlọ ọrụ—Dacromet flange bolts na-enye ụzọ ọzọ egosipụtara, na-adịgide adịgide. Ha kacha mma ike ihu igwe, oxidation iguzogide, na nchebe ịchụ àjà Usoro na-eme ka ndụ ọrụ gbatịkwuo yana belata ụgwọ ọrụ mmezi, na-eme ka ha bụrụ nhọrọ na-arịwanye elu maka ndị injinia na ndị na-emepụta ihe n'ụwa niile.