???? ????????/?????????????

???????????

????GB9948-2006???й??????? ???????????????????????Ρ????? ?????????

????????????????????ˉ??????????????????????? ??????????????????

????10??20??15CrMo??1Cr2Mo??1Cr5Mo?? ???????????? ????10??20<??????????????ι?????> ????15CrMo<??????????+?????ι?????+???> ????1Cr2Mo<??????????+?????ι?????+???> ????1Cr5Mo<???> ?????????????????????????-???X???X0.02466=KG/M ?????????????-???X???X0.02486=KG/M ??????繫??: ????

???????	????D??	?????S??
??ι?	?????(mm)	???????(mm)	????? (mm)	???????(mm)
??30??50	??0.3	??30	??10??
??50??219	??0.8??
??????	??219	??1.0??	??20	??10??

?????????? ????

???	???	????????MPa??	????????MPa??	?????????	???????J??	????????HB??	??????
GB9948	10	330??490	??205	??24	/	/	????
20	410??550	??245	??21	??39	/	????
15CrMo	440??640	??235	??21	??47	??170	???????
1Cr2Mo	??390	??175	??22	??92	??179	???????
1Cr5Mo	??390	??195	??22	??92	??187	???

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

???	???	???????????
C	Si	Mn	P	S	Cr	Mo	Ni
GB9948	10	0.07??0.14	0.17??0.37	0.35??0.65	??0.035	??0.035	??0.15	/	??0.25
20	0.17??0.24	0.17??0.37	0.35??0.65	??0.035	??0.035	??0.25	/	??0.25
15CrMo	0.12??0.18	0.17??0.37	0.40??0.70	??0.035	??0.035	0.80??1.10	0.40??0.55	??0.30
1Cr2Mo	??0.15	0.50??1.00	0.30??0.60	??0.035	??0.030	2.15??2.85	0.45??0.65	/
1Cr5Mo	??0.15	??0.50	??0.60	??0.035	??0.030	4.00??6.00	0.45??0.60	??0.60