Kwinkqubo yemveliso ye-astm a179umbhobho wentsimbi ongenamthungo otsalwa ngokubanda, kukho ukuqina okubandayo kunye ne-hydrogen embrittlement phenomenon, ezibangelwa kukubanda okutsalwa ngokubanda kwetyhubhu eqhekezayo esona sizathu siphambili.

Uhlahlelo lwesenzeko sokugqabhuka kombhobho we-astm a179 obandayo otsalwa ngumthungo yidayamitha encinci yombhobho wentsimbi ongenamthungo ngomzobo wokufa okubandayo okwenza ukubanda kubumba, indlela yenkqubo iqhele ukutsala, ukuchola, ukuzoba.Umbhobho wentsimbi ongenamthungo otsalwa yingqele encinci kwinkqubo yokuzoba, ngamanye amaxesha ukusuka ekuqaleni ukuya ekupheleni kufana ne-cracker bamboo crack phenomenon, le nto siyibiza ngokuba kukuqhekeka.

Izizathu zokuqhekeka zezi:

Impembelelo yomsebenzi wokuqina, umbhobho wentsimbi uvelisa ubuninzi beplastiki ngexesha lokuzoba okubandayo, okubangela ukuphazamiseka okukhulu kwelatisi, okwandisa amandla e-lattice kunye nokwandisa amandla angaphakathi esinyithi, okukhokelela kuxinzelelo olungalinganiyo lwangaphakathi lwentsimbi kunye noxinzelelo olushiyekileyo. .Oku kuya kwandisa ukuqina kwesinyithi, ukuqina kwehle.Ukuphakama kokuqina kwesinyithi, kokukhona kukho intsalela yoxinzelelo lwangaphakathi ngexesha lomzobo obandayo, kokukhona kucaca ngakumbi ukuba umsebenzi unzima.Xa uxinzelelo olushiyekileyo lufikelela kwixabiso elithile, isinyithi siya kukrazula kunye ne-interface ethile yeenkozo, ukubunjwa kombhobho wentsimbi epholileyo.

Impembelelo ye-hydrogen embrittlement, kwinkqubo yokuhla nge-asidi, i-asidi ye-sulfuric kunye nentsimbi isabela kwi-precipitate hydrogen.I-Hydrogen ingena kwintsimbi ngendlela yee-athomu okanye i-ion ukwenza isisombululo esiqinileyo.Umphumo we-hydrogen kwiipropati ze-mechanical zensimbi zifana ne-hydrogen embrittlement.