Surface roughness considerably influences the stamping and coating performance of the automotive plates;however,the surface roughness of the automotive plates is transferred from the roll during the rolling process.Th...Surface roughness considerably influences the stamping and coating performance of the automotive plates;however,the surface roughness of the automotive plates is transferred from the roll during the rolling process.Therefore,the variation and control technology regarding the roughness of the automotive plates and rolls has drawn increasing attention from researchers in China and around the globe.In this study,the research methods,analytical techniques,prediction models,transfer rules,and control technologies regarding the surface roughness of the automotive plates and rolls were reviewed.Among these,an online measurement system for automotive-plate and roll surface roughness has been applied to the production lines of Germany,China,Belgium,Holland,Austria,and other countries and has achieved remarkable results.Online measurement and timely feedback regarding the automotive-plate and roll surface roughness are needed to ensure favorable conditions for the establishment of automotive-plate roughness-control measurement.展开更多
In Pangang 1450 hot strip mill,the 610MPa grade hot rolled sheet with stable mechanical properties using for automobile crossbeam was developed by adopting Nb-V microalloying design,controlled rolling and cooling.The ...In Pangang 1450 hot strip mill,the 610MPa grade hot rolled sheet with stable mechanical properties using for automobile crossbeam was developed by adopting Nb-V microalloying design,controlled rolling and cooling.The ranges of its yield strength,tensile strength,elongation are 510-645MPa,615-710MPa,and 22%-30%,respectively.The average yield strength tensile strength,elongation are 569MPa,652MPa,26%,respectively.The P610L steel which produced in Pangang with excellent low temperature impact toughness and forming property,can fully meet the requirements of users.展开更多
文摘Surface roughness considerably influences the stamping and coating performance of the automotive plates;however,the surface roughness of the automotive plates is transferred from the roll during the rolling process.Therefore,the variation and control technology regarding the roughness of the automotive plates and rolls has drawn increasing attention from researchers in China and around the globe.In this study,the research methods,analytical techniques,prediction models,transfer rules,and control technologies regarding the surface roughness of the automotive plates and rolls were reviewed.Among these,an online measurement system for automotive-plate and roll surface roughness has been applied to the production lines of Germany,China,Belgium,Holland,Austria,and other countries and has achieved remarkable results.Online measurement and timely feedback regarding the automotive-plate and roll surface roughness are needed to ensure favorable conditions for the establishment of automotive-plate roughness-control measurement.
文摘In Pangang 1450 hot strip mill,the 610MPa grade hot rolled sheet with stable mechanical properties using for automobile crossbeam was developed by adopting Nb-V microalloying design,controlled rolling and cooling.The ranges of its yield strength,tensile strength,elongation are 510-645MPa,615-710MPa,and 22%-30%,respectively.The average yield strength tensile strength,elongation are 569MPa,652MPa,26%,respectively.The P610L steel which produced in Pangang with excellent low temperature impact toughness and forming property,can fully meet the requirements of users.
