N'oge nnyefe ike, ụlọ elu ígwè bụ ihe dị oké mkpa. N'oge a na-emepụta ngwaahịa ígwè ụlọ elu ígwè, a na-emekarị usoro mmepụta nke galvanizing na-ekpo ọkụ na-ekpo ọkụ n'elu iji chebe elu nke ngwaahịa ígwè site na corrosion nke ikuku mpụga na gburugburu dị iche iche. Iji usoro galvanizing na-ekpo ọkụ na-ekpo ọkụ nwere ike nweta mmetụta mgbochi corrosion dị mma. Site na ihe ndị dị elu nke nnyefe ike, ihe ndị a chọrọ maka usoro mmepụta nke ngwaahịa ígwè galvanized dịkwa elu.
(1) Basic ụkpụrụ nke na-ekpo ọkụ itinye galvanizing
Galvanizing na-ekpo ọkụ na-ekpo ọkụ, nke a makwaara dị ka ikpo ọkụ na-ekpo ọkụ, bụ otu n'ime ụzọ mkpuchi kachasị mma maka ichekwa mkpụrụ ígwè. Na zinc mmiri mmiri, mgbe ígwè workpiece emewo ọgwụgwọ anụ ahụ na nke kemịkal, a na-emikpu nchara nchara n'ime zinc gbazere na okpomọkụ nke 440 ℃ ~ 465 ℃ ma ọ bụ karịa maka ọgwụgwọ. Ngwa nchara ahụ na-eji zinc a wụrụ awụ meghachi omume iji mepụta akwa ọla edo Zn Fe yana akwa zinc dị ọcha ma kpuchie elu igwe nchara ahụ dum. Elu galvanized nwere ụfọdụ ihe siri ike, nwere ike iguzogide nnukwu esemokwu na mmetụta, ma nwee njikọ dị mma na matriks.
Nke a plating usoro bụghị nanị nwere corrosion eguzogide nke galvanizing, ma nwekwara Zn Fe alloy oyi akwa. Ọ nwekwara ike corrosion eguzogide na-apụghị iji tụnyere galvanizing. Ya mere, usoro plating a dabara adaba maka ebe dị iche iche na-emebi emebi dị ka acid siri ike, alkali na foogu.
(2) Arụmọrụ nke na-ekpo ọkụ itinye galvanizing
O nwere akwa akwa zinc dị ọcha ma dị oke n'elu nchara, nke nwere ike izere kọntaktị nke mkpụrụ nchara na ngwọta corrosion ọ bụla ma chebe mkpụrụ nchara site na corrosion. N'ime ikuku n'ozuzu, a na-emepụta akwa zinc oxide dị nro na nke siri ike n'elu akwa zinc, nke siri ike igbari na mmiri, ya mere ọ na-arụ ọrụ ụfọdụ n'ichebe matrix ígwè. Ọ bụrụ na zinc oxide na ihe ndị ọzọ dị na mbara igwe na-etolite nnu zinc na-adịghị edozi, mmetụta mgbochi corrosion dị mma karịa.
Mgbe galvanizing na-ekpo ọkụ na-ekpo ọkụ, ígwè ahụ nwere oyi akwa Zn Fe alloy, nke bụ kọmpat ma nwee nguzogide corrosion pụrụ iche na ikuku nnu mmiri na ikuku ụlọ ọrụ. N'ihi njikọ siri ike, Zn Fe na-enweghị ike ma nwee nguzogide iyi siri ike. N'ihi na zinc nwere ezigbo ductility na alloy oyi akwa na-ike mmasị na ígwè mkpụrụ, na-ekpo ọkụ-mikpu galvanized workpiece nwere ike kpụrụ oyi punching, mpịakọta, waya ịbịaru, ekwe, wdg na-enweghị imebi zinc mkpuchi.
Mgbe na-ekpo ọkụ galvanizing, na ígwè workpiece bụ Ẹkot ihe annealing ọgwụgwọ, nke nwere ike n'ụzọ dị irè melite n'ibu Njirimara nke ígwè mkpụrụ, wepụ nchegbu nke ígwè workpiece n'oge akpụ na ịgbado ọkụ, na bụ mma na-atụgharị ígwè workpiece.
N'elu ígwè workpiece mgbe galvanizing ọkụ na-egbuke egbuke ma mara mma. Oyi akwa zinc dị ọcha bụ oyi akwa zinc kacha rọba n'ime galvanizing na-ekpo ọkụ. Ngwongwo ya yiri zinc dị ọcha, yana ọ nwere ductility, ya mere ọ na-agbanwe agbanwe.
Oge nzipu: Ọgọst-26-2022
