宝马汽车钣金-高强度车身钢板基础知识

和业事故车维修技能培训中心HoYeCollisionRepairCompetenceTrainingCenter高强度钢板在车身设计的基础知识BasicKnowledgeofHighStrengthSteelinBodyDesignCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.断裂延伸率与屈伏极限Elongation/Yieldpoint.Copyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.˙铝合金材料主要分为铝硅合金(6xxx合金)和铝镁合金(5xxx)˙铝镁合金(5xxx)无法通过热处理工艺硬化；相反，铝硅合金(6xxx合金)在按规定进行热处理时其强度几乎能增加一倍，在设计部件时可以利用这个特性，但是需要额外使用热处理炉且成本明显提高。在成形过程中某些应力状态下铝镁合金(5xxx)合金有形成滑移带的趋势，这一点妨碍了其在外部面板部件中使用。铝硅合金(6xxx合金)没有这个缺点。车身用铝合金材料Copyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.˙磁性˙Magnetic˙非磁性˙Magneticneutral˙弹性率只有1/3˙容许重新塑形˙断裂时的伸长率低于50%˙结构已从200OC开始变化˙结构变化温度范围：200~250OC˙外观：有光泽˙外观：容易氧化、没光泽˙容易腐蚀˙材料膨胀率-钢材的两倍˙熔点˙MeltingPoint=1,460oC˙熔点˙MeltingPoint=650oC˙密度˙Density=2.7g/cm3铝金属˙Aluminum˙密度˙Density=7.9g/cm3钢˙Steel˙磁性˙Magnetic˙非磁性˙Magneticneutral˙弹性率只有1/3˙容许重新塑形˙断裂时的伸长率低于50%˙结构已从200OC开始变化˙结构变化温度范围：200~250OC˙外观：有光泽˙外观：容易氧化、没光泽˙容易腐蚀˙材料膨胀率-钢材的两倍˙熔点˙MeltingPoint=1,460oC˙熔点˙MeltingPoint=650oC˙密度˙Density=2.7g/cm3铝金属˙Aluminum˙密度˙Density=7.9g/cm3钢˙Steel车身用铝合金材料Copyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.˙各种类型的钢材在通常情况下随着强度的提高，钢材的断裂延伸率会降低。(但特种钢除外)˙碳钢分为几类。第一类：DC/DX级深拉延钢板。第二类：IF钢、烘烤硬化钢（BH钢）、微合金钢和各向同性钢制造的高强度钢板。第三类：双相钢、TRIP钢、上面提到的特种钢和新种类的TWIP钢等较高强度钢板(advancedhighstrengthsteel)。第四类：超高强度钢板(ultra-strengthsteel)，包括CP钢、MS钢和热成形的MnB钢。第五类：带有多相组织结构的钢材，如：DP钢、TRIP钢、MS钢和复相钢（CP钢）。车身用钢板材料Copyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.钢材可以按以下方式分类：(1)低碳深拉延钢：屈服极限Rp0.2180Mpa。(2)高强度钢(CHSS-HighStrengthSteel)是指屈服极限为180MPa至300Mpa的钢材。(3)较高强度钢(AHSS-AdvancedHighStrengthSteel)是指屈服极限为300MPa至600Mpa的钢材。(4)超高强度钢(UHSS-UltraHighStrengthSteel)的屈服极限为Rp0.2大于等于600Mpa。车身用钢板材料Copyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.减轻重量WeightReductionCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.刚性与延伸率RigidityandElasticityCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.Copyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.多层钢板的微观组织MicrostructureonMultilayedSteel.铁素体贝氏体奥氏体马氏体Copyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.板材生产与涂装流程Production&CoatingProcessofSteelCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E90白车身与钢板等级E90WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E90白车身与钢板等级E90WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E90白车身与钢板等级E90WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E90白车身与钢板等级E90WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E65白车身与钢板等级E65WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E65白车身与钢板等级E65WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E65白车身与钢板等级E65WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E65白车身与钢板等级E65WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E65白车身与钢板等级E65WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E65白车身与钢板等级E65WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E87白车身与钢板等级E87WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E87白车身与钢板等级E87WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E87白车身与钢板等级E87WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E87白车身与钢板等级E87WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E60白车身与钢板等级E60WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E60白车身与钢板等级E60WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E60白车身与钢板等级E60WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E60白车身与钢板等级E60WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E60白车身与钢板等级E60WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E60白车身与钢板等级E60WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E60白车身与钢板等级E60WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E46白车身与钢板等级E46WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E46白车身与钢板等级E46WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E46白车身与钢板等级E46WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E46白车身与钢板等级E46WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E46白车身与钢板等级E46WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E64白车身与钢板等级E64WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E64白车身与钢板等级E64WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E64白车身与钢板等级E64WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E64白车身与钢板等级E64WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.E64白车身与钢板等级E64WhiteBody&SteelGradeCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserved.前部的撞击力路径FrontImpactForceFlowCopyright(C)SINEWSW&H(SHANGHAI)CO.,LTD.AllRightsReserve