N a two-stage wi r e dr awing oper at ion, t he fract ional r educt ion (rat io of change in crosssect ional area to init ial cross-sect ional area) in the first stage is 0.4. The fract ional reduct ion in the second stage is 0.3. The

N a two-stage wi r e dr awing oper at ion, t he fract ional r educt io

1.	N a two-stage wi r e dr awing oper at ion, t he fract ional r educt ion (rat io of change in crosssect ional area to init ial cross-sect ional area) in the first stage is 0.4. The fract ional reduct ion in the second stage is 0.3. The
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