Ihe na-akpata corrosion nke igwe anaghị agba nchara grating

Ihe na-akpata corrosion nke igwe anaghị agba nchara grating

1 Nchekwa na-ezighi ezi, njem na ibuli elu
N'oge nchekwa, njem na ebuli, grating igwe anaghị agba nchara ga-emebi mgbe ọ na-ezute ncha sitere na ihe siri ike, kọntaktị na nchara ndị yiri ya, uzuzu, mmanụ, nchara na mmetọ ndị ọzọ. Ịgwakọta igwe anaghị agba nchara na ihe ndị ọzọ na ngwá ọrụ na-ekwesịghị ekwesị maka nchekwa nwere ike imerụ elu igwe anaghị agba nchara ma mee ka nsị kemịkal. Iji ngwá ọrụ njem na ihe ndozi eme ihe n'ụzọ na-ezighị ezi nwere ike ime ka ọkpụkpụ na ncha n'elu igwe anaghị agba nchara, si otú ahụ na-ebibi ihe nkiri chromium elu nke igwe anaghị agba nchara ma na-akpụ corrosion electrochemical. Iji hoists na chucks eme ihe n'ụzọ na-ezighi ezi na arụ ọrụ na-ezighi ezi nwekwara ike ime ka ihe nkiri chromium elu nke igwe anaghị agba nchara bibie, na-eme ka corrosion electrochemical.
2 Na-ebubu ma na-akpụpụta akụrụngwa
Ọ dị mkpa ka a hazie ihe efere igwe a na-atụgharị ka ọ bụrụ nchara dị larịị maka ojiji site na oghere na ịkpụ. Na nhazi nke dị n'elu, ihe nkiri chromium-ọgaranya oxide passivation film n'elu igwe anaghị agba nchara na-ebibi n'ihi ịcha, clamping, kpo oku, ebu extrusion, oyi na-arụ ọrụ ike, wdg, na-eme ka electrochemical corrosion. N'okpuru ọnọdụ nkịtị, ekpughere elu nke nchara ígwè mgbe e bibiri ihe nkiri passivation ga-emeghachi omume na ikuku na-edozi onwe ya, megharịa ihe nkiri passivation oxide bara ụba nke chromium, ma nọgide na-echebe mkpụrụ ahụ. Otú ọ dị, ọ bụrụ na elu nke igwe anaghị agba nchara adịghị ọcha, ọ ga-eme ka corrosion nke igwe anaghị agba nchara. Mbelata na kpo oku n'oge usoro ịkpụ na clamping, kpo oku, extrusion ebu, oyi na-arụ ọrụ siri ike n'oge usoro nhazi ga-eduga na mgbanwe na-enweghị isi na nhazi ahụ ma mee ka corrosion electrochemical.
3 Ntinye ọkụ
N'oge usoro mmepụta nke igwe anaghị agba nchara, mgbe okpomọkụ ruru 500 ~ 800 ℃, chromium carbide na igwe anaghị agba nchara ga-ebuli n'akụkụ oke ọka, na intergranular corrosion ga-eme n'akụkụ oke ọka n'ihi mbelata nke ọdịnaya chromium. Thermal conductivity nke austenitic igwe anaghị agba nchara bụ banyere 1/3 nke nke carbon ígwè. Igwe ọkụ na-eme n'oge ịgbado ọkụ enweghị ike ịgbasa ngwa ngwa, a na-akwakọba nnukwu okpomọkụ na mpaghara weld iji mee ka okpomọkụ dịkwuo elu, na-akpata corrosion intergranular nke eriri igwe anaghị agba nchara na mpaghara ndị gbara ya gburugburu. Tụkwasị na nke ahụ, a na-emebi oyi akwa oxide elu, nke dị mfe ime ka mmebi nke electrochemical. Ya mere, ebe weld na-adịkarị mfe corrosion. Mgbe arụchara ọrụ ịgbado ọkụ ahụ, ọ na-adịkarị mkpa ịkwanye ọdịdị nke weld iji wepụ ntụ ojii, spatter, slag welding na mgbasa ozi ndị ọzọ na-adịkarị mfe corrosion, a na-eme pickling na passivation ọgwụgwọ na ekpughere arc weld.
4. Nhọrọ na-ezighị ezi nke ngwá ọrụ na nhazi usoro n'oge mmepụta
N'ime usoro ọrụ n'ezie, nhọrọ na-ezighị ezi nke ụfọdụ ngwá ọrụ na nhazi usoro nwekwara ike iduga corrosion. Dịka ọmụmaatụ, mwepụ na-ezughị ezu nke passivation n'oge weld passivation nwere ike iduga corrosion kemịkal. A na-ahọrọ ngwaọrụ na-ezighi ezi mgbe ị na-ehicha slag na spatter mgbe ịgbado ọkụ, na-ebute ihicha ezughị ezu ma ọ bụ mebie ihe nne na nna. Ichicha ụcha oxidation na-ezighi ezi na-emebi oyi akwa oxide elu ma ọ bụ nrapado nke ihe ndị na-enwekarị nchara, nke nwere ike iduga corrosion electrochemical.