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,,,,250kN,20,,1250kN,250kN5,,(1)GB817687,,(2),(),(3),,,,,,,,,1..1979102.(1)(2).,1996,16(3)3..,1996(5):19970108710024,NoiseandcontrolofcrankpressTodiscusscausesofnoiseandharmsofcrankpressandputforwardeffectivewaystoreducenoise.,,,1990,,,JB182986A:90dB(A);JBöGQF200286:,90dB(A),87dB(A),85dB(A);JBöGQF200486:JB182986A:90dB(A),88dB(A),87dB(A),,,,,,,,,,5©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(1)(2)(3)(4)22.1(1),,510dB(A)[1],[3],J36800B,6dB(A)(2),,,,,,,,80dB(A)[2],212,[1](1),A=10,46dB(A)(2),5dB(A)213,:(1),,dB(A)JH23-100D888683JH21-160D858380(2),,3dB(A);25dB(A);2dB(A)(3),,3dB(A)(4),,,,,58dB(A)(5),,10mm011mm,,4dB(A),,214(1),10dB(A)[1](2),,,,,,8dB(A),,38dB(A)[4]3,,,,,,,,,1..,1981(1)2..,1981(6)3..,1995(1)4..,1995(5)5..,1982(4)63ö1997©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.