首页>
外国专利>
METHOD TO PRODUCE AXISYMMETRIC FORGINGS OF COVER TYPE WITH DIAMETER UP TO 200 MM FROM HIGH-STRENGTH ALUMINIUM ALLOYS AL - ZN - MG - CU, ALLOYED BY SCANDIUM AND ZIRCONIUM
METHOD TO PRODUCE AXISYMMETRIC FORGINGS OF COVER TYPE WITH DIAMETER UP TO 200 MM FROM HIGH-STRENGTH ALUMINIUM ALLOYS AL - ZN - MG - CU, ALLOYED BY SCANDIUM AND ZIRCONIUM
FIELD: metallurgy.;SUBSTANCE: method to produce axisymmetric forgings of a cover type with a diameter of up to 200 mm from high-strength aluminium alloys Al-Zn-Mg-Cu, alloyed with scandium and zirconium, includes preparation of aluminium melt, containing scandium and zirconium, its reheating to 765-780°C, casting of round bars of small diameter at 710-740°C, their homogenisation at 400-440°C for 4-10 hours, stamping at 380-440°C, tempering from temperature 465-480°C with even cooling of the entire surface of forgings with speed providing for preservation of fully non-crystallised structure of the forging after tempering, and artificial ageing.;EFFECT: forgings have lower level of residual tempering stresses, which provides for stability of geometric parameters of parts due to elimination of ovalisation when turning forgings into thin-walled parts.;2 tbl, 1 ex
展开▼
机译：领域：冶金;物质：由from和锆合金化的高强度铝合金Al-Zn-Mg-Cu制成直径最大为200 mm的盖型轴对称锻件的方法，包括铝熔体的制备，包含scan和锆，将其重新加热到765-780°C，在710-740°C铸造小直径的圆棒，在400-440°C均质化4-10小时，在380-440°C冲压，在465-480°C的温度范围内回火，并以一定的速度均匀冷却整个锻件表面，以保持锻件在回火和人工时效后完全非晶态。当将锻件变成薄壁零件时，由于消除了椭圆化，从而提供了零件几何参数的稳定性。; 2 tbl，1 ex
展开▼
