Nhọrọ nke ọgwụgwọ elu bụ nsogbu nke onye mmebe ọ bụla na-eche ihu. Enwere ọtụtụ ụdị nhọrọ ọgwụgwọ elu dị na ya, na onye nrụpụta ọkwa dị elu kwesịrị ọ bụghị naanị ịtụle akụ na ụba na ịdị irè nke imewe ahụ, kamakwa ṅaa ntị na usoro mgbakọ na ọbụna ihe ndị chọrọ gburugburu ebe obibi. N'okpuru ebe a bụ okwu mmeghe nke ụfọdụ mkpuchi a na-ejikarị eme ihe maka ihe nkedo dabere n'ụkpụrụ ndị a dị n'elu, maka ntụnye aka site n'aka ndị na-eme ihe.
1. Electrogalvanizing
Zinc bụ mkpuchi a na-ejikarị eme ihe maka ngwa ngwa ahịa. Ọnụahịa ahụ dị ọnụ ala, na ọdịdị dị mma. Agba ndị a na-ahụkarị gụnyere oji na akwụkwọ ndụ akwụkwọ ndụ agha. Agbanyeghị, arụmọrụ ya na-egbochi corrosion bụ nkezi, yana arụmọrụ mgbochi corrosion ya bụ nke kachasị ala n'etiti akwa zinc plating ( mkpuchi mkpuchi). N'ozuzu, a na-eme ule ịgbasa nnu na-anọpụ iche nke igwe galvanized n'ime awa 72, a na-ejikwa ihe mkpuchi pụrụ iche iji hụ na ule ịgba nnu na-anọpụ iche na-ewe ihe karịrị awa 200. Otú ọ dị, ọnụahịa ahụ dị oke ọnụ, nke bụ 5-8 ugboro nke ígwè galvanized nkịtị.
Usoro nke electrogalvanizing na-adịkarị mfe na hydrogen embrittlement, ya mere, a naghị agwọ bolts n'elu ọkwa 10.9 na galvanizing. Ọ bụ ezie na enwere ike iwepụ hydrogen site na iji oven mgbe etinyere ya, ihe nkiri passivation ga-emebi na okpomọkụ dị elu karịa 60 ℃, ya mere a ga-eme iwepụ hydrogen mgbe electroplating na tupu passivation. Nke a nwere arụ ọrụ adịghị mma yana ọnụ ahịa nhazi dị elu. N'ezie, ụlọ ọrụ mmepụta ihe n'ozuzu anaghị ewepụ hydrogen ọ gwụla ma ndị ahịa akọwapụtara ya.
The anọgidesi n'etiti torque na pre tightening ike nke galvanized fasteners bụ ogbenye na-ejighị n'aka, na ha na-na-na-adịkarị eji maka njikọ dị mkpa akụkụ. Iji mee ka ihe na-agbanwe agbanwe nke torque preload, a pụkwara iji usoro mkpuchi lubricating ihe ndị na-emepụta ihe na-eme ka ọ dịkwuo mma ma mee ka ọ dịkwuo mma.
2. Phosphate
Ụkpụrụ bụ isi bụ na phosphating dị ọnụ ala karịa galvanizing, mana nguzogide corrosion ya dị njọ karịa galvanizing. Mgbe phosphating gasịrị, a ga-etinye mmanụ mmanụ, na nguzogide corrosion ya nwere njikọ chiri anya na arụmọrụ nke mmanụ a na-etinye. Dịka ọmụmaatụ, mgbe phosphating gasịrị, tinye mmanụ nchara nchara n'ozuzu ma na-eduzi ule ịgba mmiri na-anọpụ iche maka naanị awa 10-20. Itinye mmanụ mgbochi nchara dị elu nwere ike were awa 72-96. Mana ọnụ ahịa ya bụ okpukpu 2-3 karịa mmanụ phosphating izugbe.
Enwere ụdị phosphating abụọ a na-ejikarị eme ihe maka ngwakọ, phosphating nke zinc na phosphating dabere na manganese. Zinc dabeere phosphating nwere mma mmanu mmanu arụmọrụ karịa manganese dabeere phosphating, na manganese dabeere phosphating nwere mma corrosion nguzogide na eyi iguzogide karịa zinc plating. Enwere ike iji ya na okpomọkụ sitere na 225 ruo 400 degrees Fahrenheit (107-204 ℃). Karịsịa maka njikọ nke ụfọdụ akụkụ dị mkpa. Dị ka njikọ bolts na mkpụrụ nke injin, isi cylinder, isi ihe na-ebugharị, bolts flywheel, bolts wheel na nuts, wdg.
Igwe ike dị elu na-eji phosphating, nke nwekwara ike zere nsogbu mgbakasị hydrogen. Ya mere, bolts n'elu ọkwa 10.9 na ulo oru ubi n'ozuzu na-eji phosphating elu ọgwụgwọ.
3. Oxidation (na-agbaji)
Blackening + mmanu bụ mkpuchi na-ewu ewu maka ngwakọ ụlọ ọrụ n'ihi na ọ dị ọnụ ala ma mara mma tupu eri mmanụ. N'ihi na ọ na-agba oji, ọ fọrọ nke nta ka ọ bụrụ na ọ nweghị ikike igbochi nchara, ya mere ọ ga-agba nchara ngwa ngwa na-enweghị mmanụ. Ọbụlagodi na ọnụnọ mmanụ, nnwale ịgba nnu nwere ike ịdịru naanị awa 3-5.
4. Electroplating nkebi
Cadmium plating nwere ezigbo nguzogide corrosion, karịsịa na gburugburu ikuku mmiri, ma e jiri ya tụnyere ọgwụgwọ elu ndị ọzọ. Ọnụ ego ọgwụgwọ mmiri n'efu na usoro electroplating cadmium dị elu, ọnụ ahịa ya dịkwa ihe dịka 15-20 ugboro karịa nke zinc electroplating. Ya mere, a naghị eji ya na ụlọ ọrụ izugbe, naanị maka gburugburu ebe obibi. Fasteners eji maka ikpo okwu na-egwupụta mmanụ na ụgbọ elu HNA.
5. Chromium plating
Ihe mkpuchi chromium na-akwụsi ike na mbara igwe, ọ dịghị mfe ịgbanwe agba na ịla n'iyi, na-enwekwa ike siri ike na ezigbo ihe mgbochi. A na-ejikarị iji chromium plating na ihe nkedo eme ihe maka ihe ịchọ mma. Ọ na-adịkarịghị eji na ulo oru ubi na elu corrosion eguzogide chọrọ, dị ka ezi chrome plated fasteners bụ hà ọnụ dị ka igwe anaghị agba nchara. Naanị mgbe ike igwe anaghị agba nchara ezughi oke, a na-eji ihe nkedo chrome plated kama.
Iji gbochie corrosion, ọla kọpa na nickel kwesịrị ibu ụzọ tinye ya tupu chrome plating. Ihe mkpuchi chromium nwere ike iguzogide oke okpomọkụ nke 1200 degrees Fahrenheit (650 ℃). Mana enwerekwa nsogbu nke mgbaka hydrogen, dị ka electrogalvanizing.
6. nickel plating
A na-ejikarị eme ihe na mpaghara chọrọ ma mgbochi corrosion na ezigbo conductivity. Dịka ọmụmaatụ, ọdụ ụgbọ ala na-apụ apụ.
7. Hot-mikpu galvanizing
Galvanizing na-ekpo ọkụ na-ekpo ọkụ bụ ihe mkpuchi na-ekesa ọkụ nke zinc na-ekpo ọkụ na mmiri mmiri. Ihe mkpuchi mkpuchi dị n'etiti 15 na 100 μm. Ma ọ dịghị mfe ịchịkwa, ma ọ nwere ezigbo nguzogide corrosion ma na-ejikarị eme ihe na injinia. N'oge usoro ịgbanye mmiri na-ekpo ọkụ, enwere mmetọ siri ike, gụnyere mkpofu zinc na vapor zinc.
N'ihi akwa mkpuchi ahụ, ọ kpatara ihe isi ike na ịghasa eriri ime na n'èzí na ihe nkedo. N'ihi okpomọkụ nke na-ekpo ọkụ-mikpu galvanizing nhazi, ọ na-apụghị ji mee ihe fasteners n'elu ọkwa 10.9 (340 ~ 500 ℃).
8. Zinc infiltration
Zinc infiltration bụ ihe siri ike metallurgical thermal mgbasa mkpuchi nke zinc ntụ ntụ. Ịdị n'otu ya dị mma, a pụkwara inweta akwa oyi akwa na eri na oghere kpuru ìsì. Ọkpụrụkpụ plating bụ 10-110 μm. Na njehie nwere ike ịchịkwa na 10%. Ike njikọta ya na arụ ọrụ mgbochi corrosion na mkpụrụ bụ ihe kachasị mma na mkpuchi zinc (dịka electrogalvanizing, galvanizing hot-dip galvanizing, na Dacromet). Usoro nhazi ya enweghị mmetọ na nke kachasị mma na gburugburu ebe obibi.
9. Dacromet
Enweghị okwu mgbanye hydrogen, yana arụmarụ arụrụ arụrụ arụrụ arụrụ dị mma. N'echeghị chromium na nsogbu gburugburu ebe obibi, Dacromet bụ n'ezie ihe kachasị mma maka ihe nkedo dị elu nke nwere nnukwu ihe mgbochi corrosion chọrọ.
Oge nzipu: Mee-19-2023
