?? ?? ??

?? / leg length
?????? ???? ?????? ?????? ??? ???.

???? / hot crack, hot cracking, solidification cracking
??? ???? ??????? ?????? ?? ? ??? ??? ???? ???? ????? ?????? ?? ??????(?? ??)? ??? ??? ??? ???? ???? ???? ??? ???. ?? ?????? ????? ????? ??????? ????? ??. ????? ?? ????? ?? ???? ? ??, ????, ?? ?? ?? ????(solidfication crack), ????(liquation crack), ??????(ductility-dip crack)? ????.
Type ¢ñ
(????) Type¢ñA ???? (????)
Type¢ñB ???? (HAZ)
Type¢ñC ???? (????/????)
Type ¢ò
(??????) Type¢òA ?????? (HAZ)
Type¢òB ?????? (????/??)
Type¢òC ?????? (???? ????/????)

????? ????? ?? ????(bead crack)? ??????(ctater crack)??? ????? ??. ????? ???(longitudinal crack), ???(transverse crack), ????(»¡ î, arc-like crack)? ????. ?? ???? ????? ??? ???? ?? ??? ????? ??? ?????? ??? ??. ?? ???? ????? ???? ???? ??? ???? ??? ????, ??? ??? ???? ??? ??? ???? ?? ??? ????. ??(»¡ î)??? ???? ?????? ???? ???? ????? ??? ???? ?? ?? ???? S??? ???, ????? ???? ?? ??? ????. ?? ???? ??? ????? ??? ??????? ??? ??? ???? ???? ? ??? ?? ???, ???, ????(star shape crack)? ????.