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 ntinye akụkụ
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