Ọ na - abụkarị ihe nchara nchara bụ ihe na - apụnara ihe, ọ bụ ebe kachasị mkpa bụ ogo nsogbu ahụ. Nke a bụkwa isiokwu kachasị mkpa na ogo nke ndị na - emepụta igwe anaghị agba nchara. Yabụ otu esi ehicha stays ndị bi na flange thinly na ngwa ngwa?

Ihe a na-ejikarị flange bụ steel 304. A ga-agbakọ akwụkwọ a na ihe a na 20 ℃ na 10% nitric acid na ọnụego erughị 0.1 mm kwa afọ; Na 10% esi acetic acid, ọnụego corrosion erughị 0.1 mm kwa afọ; Ọnụego crarion na-erughị 0.1 mm kwa afọ na 50% citric acid; 20% nke potassium hydroxide bụ ihe na-erughị 0.1 mm kwa afọ. Na 60 ℃, corrosion ọnụego nke 80% phosphoric acid ka na-erughị 0.1 mm kwa afọ. Mana na 50 ℃, corrosion ọnụego nke 2% sulfuric acid bụ 0.016 mm kwa afọ. Ya mere, eriri igwe anaghị agba nchara site na igwe anaghị agba nchara welded cipe fit na-acha odo odo na-agba nchara ma ọ bụ na-adịghị ike alcia. A na-emekarị fdịji igwe anaghị agba nchara n'ọhịa, nke ga-ada n'elu akụrụngwa ahụ. Enwere ike iji mmiri ma ọ bụ ihe ngwọta a ga-ewepụ. Mana maka ntinye nke unyi kwesiri iji mmiri nrụgide dị elu ma ọ bụ uzuoku iji dị ọcha. Mgbe ahụ enwere okwu banyere ígwè na-egwe ntụ ma ọ bụ ígwè agbakwunyere. N'elu elu ọ bụla, iron free ga-agba nchara na corrode igwe anaghị agba nchara. N'ihi ya, ọ ga-ekpochapụ ya. A ga-ewepụ ntụ ntụ mmiri na uzuzu. A ga-ejikwa nraranye siri ike na-emeso ya.

Ihe dị n'elu bụ usoro nhicha nke residual stails na igwe anaghị agba nchara, igwe anaghị agba nchara na-emebi emebi, kama ọ ga-asacha nke ọma ma lekọta ya nke ọma.