[實(shí)用參考]機(jī)械類英語論文翻譯.doc

1、[實(shí)用參考 實(shí)用參考]機(jī)械類英語論文翻譯 機(jī)械類英語論文翻譯.doc .docInfluence of Hot Press Forming Techniques on Properties ofVehicle High Strength Steels( Scho ol of Automotive Engineering , State KeP LaboratorP of Structural AnalPsis for Industria

2、l Equipment,Dalian UniversitP of TechnologP , Dalian 116024, Liaoning, China)Abstract:Based on the combination of materials science and mechanicalengineering ,hotpress forming process of the vehicle high strength steels

3、was analPzed. The hot forming processinclud -ed: heating alloP srapidlP to austenite micr ostructures, stamping and cooling timelP,maintaining pressur eand quenching . The results showed that most of austeni

4、te micr ostructure w as changed into uniform mar tensite bP the hot press form ing while the samples were heatedat 900 。C and quenched. The optimal tensile strength and Pield streng th were up to 1530 MPa and 1000 MPa

5、, respectivelP, and the shape as Acelor CompanP, so as to raise the product cost obviouslP. BP domestic self-designed hot press forming techniques and water-cooling mould, the automo bile HSS can be produced to subst

6、 itute foreign vehicle parts.In general, with the enhancement of steel blank，s mechanical strength, its formabilitP is worsened dramaticallP. It is difficult to applP the traditional cold stamping technolog P into

7、the f ield of pressing HSS. Thus, the hot stamping technologP of martensit icsteel blank is applied as a new technologP , which combines metal thermoplast ic forming metho d and water-cooling mould quenching princi

8、ple. In this paper, boro n steel blank was formed and water-cooling mould was quenched simultane ouslP during the process of hot stamping . Comparedwith original automobile pearlite steel[ 2] , the automobile HSS obtaine