Alloyedkub-dip galvanized steel phaj(440 BH)
Tam sim no, automotive panels feem ntau siv ci-hardened 340BH steel daim hlau thiab zoo tib yam 440W steel daim hlau. Lub zog tawm los ntawm 440BH yog qis dua 440W thiab qhov pib zoo ib yam li 340BH. Txawm li cas los xij, tom qab kev kho mob ci, lub zog ntawm 440BH steel phaj nce mus rau ntau dua 340BH steel phaj thiab nyob ze rau 440W steel phaj. Txij li thaum lub dent resistance yog proportional rau 1/2 lub hwj chim ntawm steel phaj thickness, cov nyhuv ntawm kev siv 440BH steel phaj los txo cov thickness ntawm cov tivthaiv yog tib yam li uas siv 440W steel phaj. Nws yog kwv yees tias piv nrog 340BH steel phaj Cheebtsam, lub thickness ntawm cov khoom yuav raug txo los ntawm 0.05mm los ntawm kev siv 440BH steel phaj. Cov nyhuv thinning no yog tshwm sim los ntawm kev faib tawm me me ntawm martensite hauv cov qauv ferrite ntawm 440BH steel phaj.
Lub rigidity ntawm steel phaj tsuas yog nyob ntawm thickness thiab elastic modulus ntawm steel phaj. Lub zog siab tsis tuaj yeem txhim kho lub rigidity ntawm steel phaj. Yog li ntawd, qhov teeb meem rigidity tau dhau los ua lub hauv paus hauv kev txo cov thickness ntawm lub tsheb panels.
Txias dov daim hlaurau automotive structural qhov chaw
Txhawm rau tiv thaiv qhov tshwm sim ntawm cov kab nrib pleb hauv cov kab nrib pleb thiab shear ntug kab nrib pleb hauv cov khoom siv hauv tsheb, cov hlau txias txias rau cov khoom siv hauv tsheb yuav tsum muaj kev ua haujlwm zoo. Ob qhov kev ua tau zoo no yog hu ua elongation thiab stretch flangeability, feem, thiab raug soj ntsuam los ntawm elongation thiab qhov nthuav dav tus nqi, feem. Qhov loj dua ob qhov ntsuas no yog, ntau dua qhov ua tau zoo ntawm cov phaj steel thiab qhov dav ntawm cov duab ntau ntawm cov khoom siv machined.
Txhawm rau txhim kho qhov kev tswj xyuas meej ntawm cov qauv hlau phaj, GNEE tau tsim cov hlau phaj uas yooj yim rau kev ua bulge forming thiab stretch flange (shearing) ua.
Lub elongation ntawmhigh-strength steel phajyog inevitably me dua li cov hlau uas muaj zog tsawg. GNEE tau tsim high-lubricity kub-dip galvanizing tshuab. Tshuab tuaj yeem them nyiaj rau qhov txo qis hauv formability, tshwj xeeb tshaj yog bulgeability, ntawm high-strength steel phaj los ntawm tsawg elongation. GNEE yog ib qho zoo heev lubricating film tsim los txhim kho formability ntawm me ntsis steel. Nws tau siv dav thiab tseem zoo heev hauv kev txhim kho formability ntawm high-strength steel daim hlau. Lub siab-lubricity zaj duab xis txo qhov kev sib txhuam ntawm lub siab-lub zog steel phaj thiab pwm, ua rau lub qhov siab ntawm lub alloyed kub-dip galvanized steel phaj nrog lub siab-lubricity zaj duab xis yuav ntau dua li qhov siab qhov siab. Yog li ntawd, GNEE kuj yog ib qho kev kho mob saum npoo av los txhim kho formability ntawm cov hlau phaj siab.