?????????????? ?????????? ??????????:

?????? ?????????? ?????????????? ??? ?????????? cast???? ????? ???? ???????, ?????????????? ing???? ???? ??? ???? ???? ?????????? ???? ??? ??????? ???? ???, ???????? ??? ?????????????? ing???????? ?????? ??? ???????? ??????????? ??????? ????? ???? ???, ??? ?????? ????-????? ?????????? ?????????? ?? ?????? ????? ???, ?????????? ???? ?????? ???????? ???? ??? ????? ??????, ???? ????????? ??????????? ???? ???? ????? ????? ???? ????? ?? ?????? ??????? ??? ?????????????? ??? ???????? ???? ??? the

?????????????? ????? ?????????? ????????????? ?????? ?????????? ???? ?????????????? ????? ???? ?? ????? ??? ????, ??????? ?????? ??? ???? ??? ?? ??????? ?????????? ???????? ?????? ????????? ??? l ?????????????? ??????? ??????? cast???? ???, ???? ??? ?? ?????? ??? usually ??? ??????? ??? ??? ???? ????? ?????????????? ?????? ??????? ????? ?????? ???? ??? ?????????? ??????? ???? ??????? ??? ???? ??? ???????? 450 ???????? ??????? ??? ???, ?????? 10% ?????? ?????

?????????? ??????? ?????????????:

1. ?????????? ??? ????????: ????????? ??????????, ?????? ??????????, ?????????? ??????????

2. ?????? ????????? ???????: ???? ?????? ?????????? ??????? ?????????? ?????? ?????????? ?????? ??????????? ?????? ??????????

3. ?????????? ??????? ????????: ??? ?????????? ?????????? ?????????? ?????????? ????? ?????????? ??????????

?????????? ?????????????????? ??????:

1. ????? ?????? ?????? ????? ????

????? ???????????????? ?????????? ?????? 500 ??????? ?????? ????, ????? ??????? ?????????? ?????? 400 ? ?????? ???? ??? ???????? ?????????? ?????? 40-50 ? ?????? ?????

2. ?????????? ?????????? ???? ?????? ????? ??????

?????????? ?????? ???? ??????????? ????????????????? ??? ????????? ??????????????? ????? ???? ????, ?????? ?????????? ?????? ?? ???? ?????????????? ??????????? ????, ???? ??? ?????????? ??? ????????? ????????? ?????????? (?????????? ???) ????????? ????????????? ???????? ???????????????? ??????? ?????? ???????? ?????? ????????? ??????? ???? ???? ?

?. ?????????? ????????? ???? ??????? ??????? ??????

?????????? ????????????? ???? ?????? ??????? ?????? ???? ????, ?? ??? ????? ??????? ???? ???? ??, ??? ??? ???? ??????? ????? ?? ???? ??? ????? ????? ??? ???? ??????? ????????? ??? ????? ???? ???? ???????? ??? ???? ???? ???????? ?? ??????????? ??????? ????? ???? ???? ?????

??????? ???????? ??? ???????, ??? ??? ???? ??? ???????????? ???? 500-1000 ???? ??????? ??????? ?????????? ????????? ?? ??? ??? ??????? ???????? extrusions ?????????? ???? ??????????????? ?????

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