瑞典ASEA公司研究成一种新工艺,用均衡热压力和新压型加工方法可使车轮不同部分的钢材具有不同的性能。车轮在最后的热成形和热处理之前加入适当的添加剂,可以改变金属的性能。热处理能使添加剂活化改变钢材的组织。轮缘内侧的钢材硬度很大,并能自动润滑以减少磨耗。车轮其它部分的钢材机械强度适当,韧性大,能吸收冲击力。这种车轮已在 Sweden ASEA research into a new technology, with balanced heat pressure and new pressure processing methods can make different parts of the wheel steel with different properties. The wheel incorporates the proper additives before the final thermoforming and heat treatment to change the properties of the metal. Heat treatment can activate the additive to change the texture of the steel. The rim of the steel inside the hardness, and can automatically lubricate to reduce wear. Other parts of the wheel steel mechanical strength, toughness, can absorb impact. This wheel is already there