???????：?????????, ???? ????? ?????? ??????????? ?????? ????? ????? ??????????, ????? ??????? ???? ?????????, ???? ??????? ????? ??????????, ????? ??????? ?????? ?????? ????? ????? ???????? ???????????.
?????????, ???? ????? ?????? ??????????? ?????? ????? ????? ??????????, ????? ??????? ???? ?????????, ???? ??????? ????? ????????????? ????? ????? ???????? ???????????.
???????????? ????? ????? ???????? ??????? ????? 9 ?????? ???????.
1, ???????????? ????? ????????
????? ??????? ???????, ??? ?????????? ??????? ?????? ????? ???????????? ????? ????? ?????? ??????? ????? ??????? ????? ??? ??????????. ???????????? ????? ????? ????????? ???????? ????? ???????? ????? ????? ?????? ?????? ?????????? 4.75mm ???? ?????? ?? ??????? ???? ???? ?????, ???? ??????? ???? ????? ??????? ???? ?????? ????? ?????.
2, ???????????? ????? ????????????
?????????, ??????? ???? ????????? ????-?????? ????, ????????? ????????? 2.6 ????? 3.6 ???? ???????, ???? ?????? ???????? ????? ????????? ?????????, ????? ???? ???? ?????? ????? ???????. 150 ???????????? ???????? ???? ?????? ???????????, ??????? ???????? ?????? ??????????? ???? ???????????????? ???????, ??????? ???????, ???????? ?????? ????? ??????.
?????, ????? ??????? ???? ?????????? ???????? ???? ??????, ????? ???????? ????? ?????????????? ???????? ???????? ????? ??????? ???????, ????? ??????? ???? ????? ?? ??? ????? ???????? ????? ?????? ????????.
????? ?????????? ????????? ???? ??????? ?????? ?????? ????????????, ???????? ??????? ???? ????? ????? ????? ????? ??????? ????????? ???? ??????????????. ?????? ???? ????? ?? ???????? ????? ??????? ???? ????? ?????? ????????? ?????? ?????????????.
????? ??????? ???? ????? ????????????? ???????? ????? (Mx) ??????? ?????? ??????? ??????????: ?????, ???????, ????? ????? ?????? ???????:
????? ???? ????? ???????? ?????: 3.7-3.1, ????? ???? ?? ??????? 0.5 ???? ???? ??????;
?????????? ???? ????? ??????????? ?????: 3.0-2.3, ???? ?? ??????? 0.5????-0.35????;
????? ???? ????? ??????????? ????? 2.2-1.6, ????? ???? ?? ??????? 0.35????-0.25????;
?????? ????? ???? ????? ??????????? ?????: 1.5-0.7, ????? ???? ?? ??????? 0.25???? ???? ??????;
??????????? ????? ???????? ????, ???? ????????? ???????; ??????????? ????? ???????? ????, ???? ????????? ???????.
3, ????? ??????? ???? ????? ????? ????? ??????
??????: ?????? ?????????? ??????????? ?????????, ???? ??????? ?????? ??????? ???? ??????????? ??????????: I, II, ????? III.
??????:
I ????? ???? C60 ???? ?????? ??? ????? ???? ??????????? ???????;
II ????? ???? C30-C60 ??? ????? ????? ???? ???????, ?????? ??????????????? ????? ???? ??? ???????? ????? ??????????? ???????;
III ????? ???? C30 ???? ?????? ??? ????? ???? ????????? ????? ??????? ?????? ???????.
4, ????? ??????? ???? ???????
????? ??????? ???? ?? ??????? 4.75-0.15mm ???? ???????, ????? 0.075mm ???? ????? ???? ?????? ???? ????????? ??????? ???????. ???? ?? ??????? 4.75, 2.36, 1.18, 0.60, 0.30 ????? 0.15. ?? ??????? ????????? ??????
5. ????? ??????? ???? ????? ?? ?????? ????????
???? ????? ?? ?????? ???????? ???? ???? ???? ???????? ?????????. ??? ???? ?? ???? ?????, ???? ???? ???? ??????; ????? ???? ??????? ???????, ???? ???? ??????????; ???? ???? ??????? ???????, ???? ????? ???????? ???????. ??? ???? ????? ?????? ???? ???? ???????? ???????? ???????? ??????? ???????? ???????????. ???? ???????????? ???? ?????????? ??? ?????? ???????, ????????? ????? ????????? ??????? ????? ?????? ????????????????.
6, ????? ??????? ???? ?????????? ???? ?????????
????? ??????? ???? ??????? ????????? ???? ????????? ????????? ????????, ????????, ??? ??????, ????? ??????, ????????, ????????, ???????, ???????, ???? ????, ??????? ???? ????? ??? ?????. ????? ??????? ???? ???? ???? ??????? ???????????????, ???????? ??? ????? ?????????.
7, ????? ??????? ???? ??????? ????? ???????
???????? ???? ??????? ???? ???? ??????, ????-???????? ?????? ??????? ????????? ?????????? ????? ??????. ?????? ????? ???????? ????? ?????? ????? ?????? ????? ??????, ??? ???? ???? ??????? ??????? ??????? ??????????. ????????,...
?????? ?????? ????? ????? ???? ????? 8 ????????
????? ??????? ????????? ????? ????? ????????? ????????: ?????? ?????????? ????? ????????? ????? 28 ????? ????????? ??? ??????????????; ?????? ???????? ??????, ???? ????? ???????????. ???? ??????? ??????????? ????, ????-??????? ????????? ?????????????, ??????? ????????? ??? ??????.
??????? ??????? ????? ??????? ????????? ??????????? ?????????????????, ??????? ??????? ????? ???? ????? ???????? ???????, ???????? ????????? ???? ???????? ??????? ????? ?????????? ????????????, ???????? ?????? ??? ???? ??????????? ??????? ???????? ???????.
?????? ????????? ????????? ???????? ??????????? ????????? ???????? ?????? ????? ??????? ?????? ???????? ????????????????. ????????? ??????? ?????? ????????? ??????? ?????? 2.6-3.0 ????? ???????? ????????? ????? II ????? ???????? ???????.
9, ????? ??????? ???? ?????? ?????????
???????? ??????? ????? ???? ?????? ?????????? ????????????????, ????? ?????? ??????? ??????: ????????? ??????? ???????, ?????????, ???????, ???? ????????, ???????? ???????? ?????, ?????? ????????.
????
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