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???? ??????, ??????? ???????? ?? ?????? ?????? ??????? ?? ???? ???? ??????? ?????? ????? ??. ???????? ??????? ?????? ????????? ????? ?????? ?? ?? 170 ????? ??????, ???? ???????? ?????? ????? ??-70 ????? ?????? - ??? ????? ?????. ???? ????? ????????? ??? ???? ?? 110 ????? ?????? ???? ????? ?? ???? ??????? ?? ??? ????, ?????? ????? ??????? ??????? ???????? ????. ???????, ???????? ?????? ?????? ???? ????? ????? ????? ?????? ?????? ??????? ?? ?????? ??????. ????????? ?????? ???????? ?????? ?????? ??????? ??? ???????, ????? ??????? ?????? ????? ????? ????? ???? ?????? ??????? ?????? ?????? ??? ??????? ????. ????? ????? ???? ???? ????? ???? ???? ?? ?????? ???????. ??? ?? ??, ????????? ?????? ??????? ?????? ????? ?? ???????? ?????? ?? ????? ???? ???? ????? ????? ???????? ??????, ?? ?????? ?? ??????? ?????? ????? ??? ?????? ???????, ?? ????? ??????? ?? ?????? ?????? ???????.


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????? ?? ????? ????? ?? ??????? ?????? ??????? ?????? ???? ????? ????? ????? ???? ?? ??????? ?????. ???? ??????, ????? ????????? ?????? ?? ???????? ?????? ????? ???? ????? ?? ?????? ????? ??????? ????? ?????, ?? ????? ?????? ?????? ?? ?????. ??????, ???? ???? ?? ???????? ?????? ?? ????? ??????, ?? ???? ?????? ?????? ???????? ????? ?????. ???? ?????? ??????? ????? ???? ?? ?????? ????????? ?? ?????, ?????? ???? ???? ???? ??????? ?? ????? ???? ??? ?? ?????? ???????. ?????? ??? ?? ???? ??????, ???? ?????? ?? ?????? ?????? ??? ??? ??? ??? ??????? ????? ?????? ???????. ??? ????? ??????? ??????? ????????? ????, ?????? ????? ???? ?????? ???? ??? ???? ?? ??????. ?????? ?????? ??? ????? ??: ???????? ?????? ??????? ??? ?-45-60 ????? ??????, ????????? ??? ???? ??????? ?? ???? ??????? ???? ??? ??? 110 ????? ?????? ?-190 ????? ??????. ????? ???? ??? ?????? ??? ???????? ???? ????? ???? ????? ????? ????? ???? ?????? GB/T 8174-2008.

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??? ?????? ?????? ?? ??? ??????? ??????? ????? ?? ????? ?????? ?? ?????, ????? ?? ????? ?? ???? "?????? ???? ?????": ??? ????? ????? ?????? ?? ????? (???????? ?????, ????, ???????? ?????) ?????? ???????, ??????? ???????? ???? ?????? ???????? ???????, ??? ??? ??? ???? ???? ?????? ?????? ???????? ??? ???? ?? ????? ?????? ????? ???? ?????? ???? ????? ????? ????? ??????. ???? ?????? ???? ??????: ?????? ????? ??, ???? ?????? ????? ?? ????? ?????? ?????, ??????? ????????? ????? ???? ????? ??? ???? ??? ???????, ??????? ??? ????????? ????? ?? ?? 120℃-200℃. ???? ????? ????? ??????, ????? ??????? ???? ???? ???????, ????????? ?????? ???? ????? ???? ?????? ??-35℃-45℃. —— ???? ????? ????? ????? ?? ??????? ????? ????????? ????? ??????, ????????? ???? ???????? ??-40℃, ??? ????? ?????? ??????? ???????? ?????? ?????????? ???? ?????. ????? ?????? ????? ?????? ?????? ????, ??????? ??????? ?? ?????? ?????? ?? ?????.

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