Ihe na-emekarị nke nrụgide arịa corrosion

1.Comprehensive corrosion (makwaara dị ka edo corrosion), nke bụ a onu mere site chemical corrosion ma ọ bụ electrochemical corrosion, na corrosive ọkara nwere ike iru n'akụkụ niile nke metal elu evenly, nke mere na metal mejupụtara na nzukọ dịtụ edo ọnọdụ, na Elu igwe dum na-emebi emebi n'otu aka ahụ. Maka arịa nrụgide igwe anaghị agba nchara, na gburugburu ebe na-emebi emebi nwere uru PH dị ala, ihe nkiri passivation nwere ike ịla n'iyi nchebe ya n'ihi mgbasa, wee bụrụ corrosion zuru oke. Ma ọ bụ a keukwu corrosion mere site kemịkalụ corrosion ma ọ bụ electrochemical corrosion, ihe a na-ahụkarị bụ na ọ na-esiri ike ịmepụta ihe nkiri nchebe nchebe n'elu ihe n'oge usoro corrosion, na ngwaahịa corrosion nwere ike igbari na ọkara, ma ọ bụ. na-etolite oxide porous rụrụ arụ, nke na-eme ka usoro mmebi ahụ sie ike. A pụghị ilele mmerụ ahụ nke corrosion zuru oke anya: nke mbụ, ọ ga-eduga n'ibelata mpaghara nrụgide nke ihe na-ebute arịa nrụgide, nke nwere ike ime ka nkwụsị nke perforation, ma ọ bụ ọbụna nkwụsị ma ọ bụ nsị n'ihi ike na-ezughị ezu; Nke abuo, n'ime usoro nke electrochemical comprehensive corrosion, H + Mbelata mmeghachi omume na-esochi ya, nke nwere ike ime ka ihe ahụ jupụta na hydrogen, wee mee ka hydrogen embrittle na nsogbu ndị ọzọ, nke bụkwa ihe mere na akụrụngwa kwesịrị ka mmiri gwụ. n'oge ịgbado ọkụ mmezi.
2. Pitting bụ ihe nrụrụ ime obodo nke na-amalite n'elu igwe ma gbasaa n'ime ime ka ọ bụrụ obere oghere ekara olulu corrosion. N'ebe a kapịrị ọnụ gburugburu ebe obibi, mgbe oge ụfọdụ gasịrị, oghere ndị a kpụrụ akpụ n'otu n'otu nwere ike ịpụta n'elu igwe, oghere ndị a na-agbanye ga-anọgide na-etolite ruo omimi ka oge na-aga. Ọ bụ ezie na mbelata arọ ígwè nke mbụ nwere ike ịdị ntakịrị, n'ihi ngwa ngwa nke corrosion mpaghara, ngwá ọrụ na mgbidi ọkpọkọ na-agbawakarị, na-ebute ihe mberede mberede. Ọ na-esiri ike inyocha pitting corrosion n'ihi na oghere pitting dị ntakịrị n'ogo ma na-ejikarị ngwaahịa corrosion kpuchie ya, n'ihi ya, ọ na-esiri ike ịlele na iji tụnyere pitting degrees quantitatively. Ya mere, a pụrụ iwere corrosion pitting dị ka otu n'ime ụdị corrosion kacha emebi emebi na nke aghụghọ.
3. Intergranular corrosion bụ ihe na-emebi emebi mpaghara nke na-eme n'akụkụ ma ọ bụ n'akụkụ oke ọka, karịsịa n'ihi ọdịiche dị n'etiti elu ọka na ihe mejupụtara kemịkalụ dị n'ime, yana ịdị adị nke oke oke ọka ma ọ bụ nrụgide dị n'ime. Ọ bụ ezie na corrosion intergranular nwere ike ọ gaghị apụta ìhè na ọkwa macro, ozugbo ọ na-eme, ike nke ihe na-efunahụ ihe fọrọ nke nta ka ọ bụrụ ozugbo, na-edugakarị na mberede ọdịda akụrụngwa na-enweghị ịdọ aka ná ntị. Nke ka njọ, corrosion intergranular na-agbanwe ngwa ngwa ka ọ bụrụ nrụrụ nrụrụ nke intergranular corrosion cracking, nke na-aghọ isi iyi nke nrụgide corrosion cracking.
4. Nkwụsị nke ọdịiche bụ ihe mmebi nke na-eme na oghere dị warara (obosara na-abụkarị n'etiti 0.02-0.1mm) nke a na-emepụta n'elu igwe n'ihi ihe ndị ọzọ ma ọ bụ ihe nhazi. Ọdịiche ndị a kwesịrị ịdị warara nke ọma iji kwe ka mmiri na-asọba ma kwụsị, si otú a na-enye ọnọdụ maka oghere ahụ mebiri emebi. Na ngwa bara uru, nkwonkwo flange, nut compaction na-ebupụta, nkwonkwo ụkwụ, weld seams na-adịghị welded site, cracks, elu pores, ịgbado ọkụ slag adịghị ọcha na-edebe na metal elu nke ọnụ ọgụgụ, adịghị ọcha, wdg, nwere ike ịbụ oghere, na-akpata ọdịiche corrosion. Ụdị corrosion nke mpaghara a bụ ihe a na-ahụkarị ma na-ebibi ihe nke ukwuu, ọ pụkwara imebi iguzosi ike n'ezi ihe nke njikọ ígwè ọrụ na njigide nke akụrụngwa, na-eduga na ọdịda akụrụngwa na ọbụna ihe mberede na-ebibi ihe. Ya mere, mgbochi na njikwa nke crevice corrosion dị ezigbo mkpa, a na-achọkwa nlekọta na nhicha ngwa mgbe niile.
5. Nchegbu corrosion na-akpata 49% nke ngụkọta corrosion ụdị nke niile containers, nke e ji na synergistic mmetụta nke directional nrụgide na corrosive media, na-eduga na kenkuwa cracking. Ụdị mgbawa a nwere ike ịmalite ọ bụghị naanị n'akụkụ oke ọka, kamakwa site na ọka n'onwe ya. Site na mmepe miri emi nke mgbawa n'ime ime nke ígwè ahụ, ọ ga-eduga n'ịbelata dị ịrịba ama na ike nke usoro ígwè ahụ, na ọbụna mee ka ngwá ọrụ ígwè ahụ mebie na mberede na-enweghị ịdọ aka ná ntị. Ya mere, nrụgide corrosion-induced cracking (SCC) nwere njirimara nke na-emebi mberede na nke siri ike, ozugbo a na-emepụta mgbawa ahụ, ọnụego mgbasawanye ya na-adị ngwa ngwa ma ọ dịghị ịdọ aka ná ntị dị ịrịba ama tupu ọdịda, nke bụ nnọọ ihe na-emerụ ahụ nke ọdịda akụrụngwa. .
6. Ihe ikpeazụ na-emekarị corrosion bụ ike ọgwụgwụ corrosion, nke na-ezo aka na usoro nke nwayọọ nwayọọ mebiri n'elu ihe ruo mgbe mgbawa n'okpuru njikọ nke mgbanwe mgbanwe na corrosive media. Mmetụta nke corrosion na ihe na-agbanwe agbanwe na-eme ka oge mmalite na oge okirikiri nke ike ọgwụgwụ na-ebelata n'ụzọ doro anya, na mgbape ịgbasa ọsọ na-abawanye, nke na-eme ka ike ọgwụgwụ nke ihe ígwè na-ebelata nke ukwuu. Ihe omume a na-eme ọ bụghị nanị na-eme ka ọdịda mbụ nke nrụgide nrụgide nke ngwá ọrụ ahụ dịkwuo elu, ma na-emekwa ka ndụ ọrụ nke ụgbọ mmiri na-arụ ọrụ dị ka njedebe ike ọgwụgwụ siri dị ala karịa ka a tụrụ anya ya. Na usoro eji, iji gbochie dị iche iche corrosion phenomena dị ka ike ọgwụgwụ corrosion nke igwe anaghị agba nchara nrụgide arịa, a ga-eme ihe ndị na-esonụ: kwa ọnwa 6 iji kpochaa nke ọma n'ime nke sterilization tank, mmiri ọkụ tank na ihe ndị ọzọ; Ọ bụrụ na mmiri siri ike dị elu ma na-eji akụrụngwa ihe karịrị awa 8 kwa ụbọchị, a na-ehicha ya kwa ọnwa 3 ọ bụla.