Dacromet Flange Bolts: Anti-corrosion kacha elu na arụ ọrụ mgbochi nchara maka ngwa chọrọ. 

Dacromet bụ sistemu mkpuchi inorganic nke na-abụghị nke elektrọnịkị, nke sitere na mmiri nke mejupụtara ya bụ zinc na flakes aluminom gbasasịrị n'ime ihe nkedo inorganic nwere chromium ma ọ bụ chromium na-enweghị. A na-etinye ya site na ụzọ dip-spin, spray, ma ọ bụ ntinye mmiri wee gwọọ ọkụ, mkpuchi ahụ na-etolite obere (nke na-adịkarị 5-15 μm), otu, ihe nkiri nchebe ọlaọcha-agba ntụ nke na-arapara n'ahụ ígwè ígwè.

Usoro mgbochi corrosion nke Dacromet na-arụ ọrụ site na omume mmekọ anọ:

1. Ihe mgbochi mgbochi: Zinc na flakes aluminom na-ekpuchi ekpuchi na-emepụta ọtụtụ ọkwa na-egbochi ntinye nke mmiri, oxygen na ion corrosive.

2.Achụ-aja (galvanic) nchebe: Zinc na-arụ ọrụ dị ka anode achụ àjà, ọkachamma na-emebi emebi iji chebe ígwè dị n'okpuru na nchara.

3. Ngwọta onwe onye / imezi onwe ya: Ngwaahịa oxidation nke zinc na aluminom na-ejupụta micro-emebi na mkpuchi ahụ, na-ejigide iguzosi ike n'ezi ihe nchara na-aga n'ihu.

4. Ngabiga: Ihe nkedo inorganic na ogige ndị na-agafe agafe na-ebelata oriri nke zinc, na-agbatị nguzogide corrosion n'ozuzu ya.

N'ihi na usoro a na-agụnye enweghị acid pickling ma ọ bụ electrolysis, Dacromet mkpuchi kpamkpam na-ewepụ ihe ize ndụ nke hydrogen embrittlement-a oké egwu uru maka elu-ike bolts (Akara 10.9, 12.9, na ASTM A490 / F3125). Nke a na-eme ka Dacromet flange bolts bụrụ nke a pụrụ ịdabere na ya nke ọma na nke siri ike na-eguzogide nchara na mmebi gburugburu ebe obibi.

3. Isi uru nke Dacromet Flange Bolts

3.1 Nrụrụ pụrụiche na nguzogide nchara

Mkpuchi flange nke dacromet na-enweta mgbe niile 1,000 awa ma ọ bụ karịa Nnwale ịgba nnu na-anọpụ iche (ASTM B117 / ISO 9227) na-enweghị ọdịdị nke nchara na-acha ọbara ọbara. N'ọtụtụ nkọwapụta, nchara na-acha ọcha na-egbu oge karịa awa 240-500, yana arụmọrụ mgbochi corrosion n'ozuzu ya dị elu ugboro 7-10 karịa electrogalvanizing nkịtị. Ikike igbochi nchara a pụtara ìhè na-eme ka ndụ ogologo ndụ dị n'akụkụ oke osimiri, mmiri, ụlọ ọrụ mmepụta ihe na gburugburu ebe nnu na-ekpochapụ.

3.2 Enweghị ihe ize ndụ nke embrittlement hydrogen

N'adịghị ka usoro electroplating nke na-ewebata hydrogen n'ime nchara dị elu, Dacromet dip-spin ma ọ bụ ịgbasa usoro bụ kpamkpam na-abụghị electrolytic. N'ihi ya, bolts flange dị elu na-ejigide akụrụngwa ha zuru oke ma nweere onwe ya pụọ ​​​​na mgbaji na-egbu oge nke ikuku hydrogen kpatara - na-enye ma mgbochi nchara na nchekwa nhazi.

3.3 Mkpa, mkpuchi uwe na njikwa akụkụ mara mma

Ọkpụrụkpụ mkpuchi a na-ahụkarị sitere na 5 ruo 15 μm. Ihe nkiri a dị gịrịgịrị anaghị agbanwe akụkụ eri nke ukwuu, na-enye ohere iji mkpụrụ osisi ọkọlọtọ mee ihe na-enweghị oke. Mkpuchi ahụ na-abanye n'ime geometry gbagwojuru anya, eri, na ebe ezumike n'otu n'otu, na-ahụ na mkpuchi mgbochi corrosion zuru oke ọbụlagodi na profaịlụ flange gbagwojuru anya.

3.4 Nkwụsi ike dị elu na uru ndị ọzọ

Ihe mkpuchi dacromet na-anọgide na-arụ ọrụ na okpomọkụ na-aga n'ihu ruo ihe dịka 250-300 Celsius C, na-agafe oke okpomọkụ nke zinc plating. Uru ndị agbakwunyere gụnyere ezigbo eserese, ọnụọgụ esemokwu a na-achịkwa (karịsịa na akwa mkpuchi mmanye), ndakọrịta bimetallic na aluminom, yana nnabata n'ọtụtụ ọkọlọtọ ụgbọ ala na gburugburu ebe obibi.