一, Usoro ule ịgba nnu nnu
Standardskpụrụ dị iche iche na-enye usoro nnwale dịtụ iche, isiokwu a na GJB 150.11A-2009 "Ụzọ nnwale ụlọ nyocha akụrụngwa agha Nkebi 11: Nnwale ịgba nnu" dịka ọmụmaatụ, kọwaa usoro nnwale nnwale nnu, gụnyere akọwapụtara:
1.Ọkọlọtọ nnwale ịgba nnu: GJB 150.11A-2009
2.Nleba anya nke mpempe ule: wepụ ihe ndị na-emerụ emerụ, dị ka mmanụ, griiz, uzuzu, pretreatment kwesịrị ịdị ntakịrị ka o kwere mee.
3.Nnwale mbụ: nlele anya, ọ bụrụ na ọ dị mkpa, nnwale arụmọrụ eletriki na igwe, na-edekọ data ntọala.
4.Nnwale nzọụkwụ:
a.Gbanwee okpomọkụ nke ụlọ ule na 35 Celsius C ma debe ihe nlele ahụ ma ọ dịkarịa ala awa 2;
b.Fesa maka awa 24 ma ọ bụ dị ka akọwapụtara;
c.Kpochapụ ihe nlele ahụ na okpomọkụ nke 15 ° C ruo 35 Celsius C yana iru mmiri na-erughị 50% maka awa 24 ma ọ bụ maka oge a kapịrị ọnụ;
d.Tinyegharịa usoro ịgbasa nnu na ihicha otu ugboro ka ịmechaa okirikiri abụọ ahụ.
5.Iweghachite: Jiri mmiri na-agba ọsọ sachaa ihe atụ ndị ahụ.
6.Nnwale ikpeazụ: Nleba anya, ule arụmọrụ anụ ahụ na eletriki ma ọ bụrụ na ọ dị mkpa, na ndekọ nke nsonaazụ ule.
7.Nyocha nsonaazụ: Nyochaa nsonaazụ ule site na akụkụ atọ: anụ ahụ, eletriki na corrosion.
Ihe ndị na-emetụta ule ịgba nnu nnu
Ihe ndị bụ isi na-emetụta nsonaazụ ule ịgba nnu na-agụnye: ule nyocha na iru mmiri, ntinye nke ngwọta nnu, akụkụ nke ntinye ihe nlele ahụ, uru pH nke ngwọta nnu, ọnụ ọgụgụ nke nnu na-etinye nnu na usoro ịgba.
1) Nnwale okpomọkụ na iru mmiri
Nzacha ncha nnu sitere na nzaghachi electrochemical nke ihe onwunwe, ebe okpomọkụ na iru mmiri na-arụ ọrụ dị mkpa n'ịgbanwe ọsọ ọsọ nke mmeghachi omume a. Mmụli elu na okpomọkụ na-ebutekarị ọganihu ngwa ngwa nke nrụrụ nnu. The International Electrotechnical Commission (IEC) amụbawo ihe omume a site n'ọmụmụ ihe gbasara ule corrosion ikuku na-aga ngwa ngwa, na-achọpụta na mmụba 10 Celsius nwere ike ịkwalite ọnụego corrosion site na abụọ ruo atọ, ma na-ebulikwa conductivity electrolyte site na 10 ruo 20. %
N'agbanyeghị nke ahụ, ọ bụghị nanị mmụba nke ahịrị; Ọnụ ọgụgụ corrosion n'ezie adịghị adabara mgbe niile na mmụba okpomọkụ n'ụzọ kwụ ọtọ. Ọ bụrụ na nnwale nnwale arịgoro nke ukwuu, ọdịiche dị n'etiti usoro nrụrụ nnu na ọnọdụ ụwa nwere ike ibilite, na-agbagha ntụkwasị obi nke nsonaazụ ya.
Akụkọ dị iche na iru mmiri. Ọkpụkpụ ígwè nwere ebe iru mmiri dị oke egwu, ihe dịka 70%, nke nnu na-amalite ịgbaze, na-emepụta electrolyte na-eduzi. N'aka nke ọzọ, ka ọ̀tụ̀tụ̀ iru mmiri na-adalata, ihe ngwọta nnu na-arị elu ruo mgbe mmiri ozuzo nnu kristal na-apụta, na-eduga n'ịkwụsị nwayọọ nwayọọ na ọnụego corrosion. Ọ bụ egwu dị nro n'etiti okpomọkụ na iru mmiri, nke ọ bụla na-emetụta ibe ya n'ụzọ dị mgbagwoju anya, iji chọpụta n'otu ntabi anya nke corrosion na-aga n'ihu.
2)pH nke ngwọta nnu
PH nke ngwọta nnu bụ otu n'ime ihe ndị bụ isi na-achọpụta nsonaazụ nke ule ịgba nnu. Mgbe pH dị ala karịa 7.0, ntinye nke ion hydrogen na ngwọta na-abawanye ka pH na-ebelata na acidity na-abawanye, si otú ahụ na-abawanye mmebi.
3) Sample ọnye n'akuku
Mgbe nnu na-adaba ihe fọrọ nke nta ka ọ bụrụ kwụ ọtọ, mpaghara a tụrụ atụ nke ihe nlele ahụ na-abawanye ma ọ bụrụ na ihe nlele ahụ nọ n'ọnọdụ kwụ ọtọ, na-ebute oke mbibi nke elu sample site na ịgba nnu, wee si otú a na-abawanye ogo corrosion.
4)Ntinye uche nke ngwọta nnu
Kedu ka ntinye nke ngwọta nnu si emetụta ọnụ ọgụgụ nke corrosion na-adabere n'ụdị ihe na mkpuchi elu ya. Mgbe ntinye uche adịghị agafe pasent 5, anyị na-ahụ na ọnụ ọgụgụ corrosion nke ígwè, nickel na brass na-abawanye ka ntinye nke ngwọta na-ebili; N'aka nke ọzọ, mgbe ntinye uche karịrị pasent 5, ọnụ ọgụgụ corrosion nke ọla ndị a na-egosi ọchịchọ nke imebi ihe n'ụzọ kwekọrọ na mmụba nke ntinye uche. Otú ọ dị, maka ọla ndị dị ka zinc, cadmium na ọla kọpa, ọnụ ọgụgụ corrosion na-ejikọta ya na ntinye nke ngwọta nnu, ya bụ, ntinye uche dị elu, ọnụ ọgụgụ corrosion na-adị ngwa ngwa.
Na mgbakwunye na nke a, ihe ndị na-emetụta nsonaazụ nnwale nnu nnu gụnyere: nkwụsị nke ule ahụ, ọgwụgwọ nke ụdị ule, usoro ịgba mmiri, oge ịgba mmiri, na ihe ndị ọzọ.
Oge nzipu: Mar-02-2024
