随着人们生活水平的提高,我们对生活质量的要求也不断的提高,汽车日渐成为人们的代步工具,今天给大家介绍的不是汽车,而是汽车身上的一个零件,当然汽车通常由几千个零件组成,现代高级矫车由几万个零部件组成.为满足汽车节能、环保、安全、舒适的要求,实现轻量化、高强度、高性能的目标,构成汽车的材料也发生了巨大的变化。
With the improvement of people's living standard, our quality of life also constantly improve, the car was becoming a means of transport, to introduce the car not today, but a car parts of the body, of course the car usually consists of thousands of parts, modern car by tens of thousands of parts to meet. The automobile energy saving and environmental protection, safety and comfort requirements, realize the lightweight, high strength and high performance target components of automotive materials has also undergone tremendous changes.
从前的高强度钢板,拉延强度虽高于低碳钢板,但延伸率只有后者的50%,故只适用于形状简单、延伸深度不大的零件.现在的高强度钢板是在低碳钢内加入适当的微量元素,经各种处理轧制而成,其抗拉强度高达420N/mm2,是普通低碳钢板的2~3倍,深拉延性能极好,可轧制成很薄的钢板,是车身轻量化的重要材 料.主要有含磷冷轧钢板、烘烤硬化冷轧钢板、冷轧双相钢板和高强度IF冷轧钢等,车身设计师可根据板制零件受力情况和形状复杂程度来选择钢板品种.
High strength steel used, drawing strength was higher than that of low carbon steel, but the elongation is only 50% of the latter, it is only applicable to simple shape and extend the depth of small parts. High strength steel is now adding trace elements properly in the low carbon steel, by various processing and rolling, the tensile strength of up to 420N/mm2 that is 2~3 times that of ordinary low carbon steel, deep drawing can be rolled into excellent ductility, thin steel plate, is an important material for lightweight body. The main phosphorus cold rolled steel sheet and bake hardening cold rolled steel plate, cold rolled dual phase steel and high strength IF cold rolling, the body can be selected according to the varieties of designer steel plate parts of stress and shape complexity.

含磷高强度冷轧钢板:含磷高强度冷轧钢板主要用于轿车外板、车门、顶盖和行李箱盖升板,也可用于载货汽车驾驶室的冲压件.主要特点为:具有较高强度,比普通 冷轧钢板高15%~25%;良好的强度和塑性平衡,即随着强度的增加,伸长率和应变硬化指数下降甚微;具有良好的耐腐蚀性,比普通冷轧钢板提高20%;具有良好的点焊性能。
Phosphorus containing high strength cold rolled steel sheet: phosphorus high strength cold rolled steel plate mainly used car outer plate, door, roof and trunk lid lifting plate, can also be used for stamping parts of truck cab. Main features: high strength, high ratio of common cold rolled steel 15%~25%; good strength and plasticity balance, with strength the increase of the elongation and strain hardening index decreased little; has good corrosion resistance, 20% higher than the common cold rolled steel plate has good welding performance.
烘烤硬化冷轧钢板:经过冲压、拉延变形及烤漆高温时效处理,屈服强度得以提高.这种简称为BH钢板的烘烤硬化钢板既薄又有足够的强度,是车身外板轻量化设计首选材料之一。
Bake hardening of cold rolled steel plate after stamping, drawing and painting high temperature aging treatment, yield strength can be improved. This is referred to as the bake hardening steel BH steel plate is thin and have sufficient strength, lightweight body outer panel design is one of the preferred materials.
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