Iindidi eziqhelekileyo zokubola kwesinyithi kwi-heat exchangers

I-Metal corrosion ibhekisela ekutshatyalalisweni kwesinyithi esiveliswa yikhemikhali okanye isenzo se-electrochemical ye-medium ejikelezileyo, kwaye kaninzi ngokubambisana nezinto eziphathekayo, ezoomatshini okanye zebhayoloji, oko kukuthi, ukutshatyalaliswa kwesinyithi phantsi kwesenzo sokusingqongileyo.

Iindidi eziqhelekileyo zomhlwa wesinyithi we-plate exchanger ubushushu zezi zilandelayo:

Umhlwa olinganayo kuwo wonke umphezulu ovezwe kwindawo ephakathi, okanye kwindawo enkulu, umonakalo omkhulu wokurhwalala obizwa ngokuba yi-uniform corrosion.

Umhlwa kwimingxuma eyingozi kakhulu wenzeka kwimingxuma nakwindawo ezigqunyiweyo zomphezulu wesinyithi.

I-Corrosion yoQhagamshelwano Iintlobo ezimbini zesinyithi okanye i-alloy enokuthi idibane noqhagamshelwano oluhlukeneyo, kunye nokuntywiliselwa kwisisombululo se-electrolyte solutive, kukho i-current phakathi kwabo, isantya sokubola kwezinto ezintle ezinokuthi zenzeke ziyancipha, isantya sokukhula kwezinto ezimbi ezinokuthi zinyuke.

Ukhukuliseko lokhukuliseko Ukhukuliseko luhlobo lokukhula olukhawulezisa inkqubo yomhlwa ngenxa yentshukumo ehambelanayo phakathi kwendawo ephakathi kunye nomphezulu wesinyithi.

Umhlwa okhethiweyo (Selective corrosion) Isenzeko sokuba into ekwialloyi idleke ibe phakathi ibizwa ngokuba yi-selective corrosion.

Umhlwa wokugrumba ogxunyekwe kumabala amancinane omnye kumphezulu wesinyithi wobunzulu obukhulu bomhlwa kuthiwa yi-pitting corrosion, okanye i-pore corrosion, i-pitting corrosion.

I-Intergranular corrosion I-Intergranular corrosion luhlobo lwe-corrosion ekhethwa ngokukhethekileyo umda weenkozo kunye nommandla okufutshane nomda weenkozo wesinyithi okanye i-alloy, ngelixa iinkozo ngokwazo zincinci.

Ukutshatyalaliswa kwe-Hydrogen Ukutshatyalaliswa kwesinyithi kwizisombululo ze-electrolyte ngokungena kwe-hydrogen kungenzeka ngenxa ye-corrosion, pickling, ukukhuselwa kwe-cathodic, okanye i-electroplating.

I-Stress corrosion fracture (SCC) kunye nokudinwa kwe-corrosion fracture yempahla ebangelwa isenzo esidibeneyo sokubola kunye noxinzelelo lwe-tensile kwinkqubo ethile yesinyithi-ephakathi.