关键词: ZE10镁合金, 热拉深, 极限拉深比, 起皱, 拉深性能

Abstract:

Based on the deforming status and punching load-displacement curves of ZElO magnesium alloy sheet ,the forming properties of ZE10 sheet were experimentally investigated. The experiments were carried out in different temperatures , punching velocities , blank-holding methods , blank-holding forces and lubricate oil. In the experi-ments, the temperatures of the die and the punch were controlled via the thermocouples connected to heating com-ponents, and the fixed and gradually changed blank-holding forces were exerted by controlling the compression de-gree of spring. The results show that , when the lower die and punch are respectively heated to 250~300℃and (60±5) ℃, the punching velocity is (20±5)mm/min,the blank-holding force increases from 2 to 10 kN,the mixture of 80% gas pump oil and 20% graphite is used as the lubricant , and the floating blank-holding method is adopted , ZE10 magnesium alloy sheet exhibits preferable forming properties with a limit drawing ratio of 2. 8.

Key words: ZE10 magnesium alloy, deep drawing, limited drawing ratio, wrinkling, drawability