Pipe quenching na-ekpo ọkụ n'elu oké egwu okpomọkụ, na-ejide oge, na mgbe ahụ ngwa ngwa n'ime hardening gị n'ụlọnga na okpomọkụ na mberede ebelata ka a ọnụego karịrị oké egwu jụrụ ọnụego nke ngwa ngwa jụrụ, martensite na-enwetara dabeere bụghị nhata microstructure okpomọkụ ọgwụgwọ zutere. .
GỤKWUO