Modeling and Optimization for Piercing Efficiency and Energy Consumption Based on Mean Value Substaged KELM-PLS and GA Method

Table 1

Modeling variable table for piercing efficiency and energy.

Number

Original variables

The first stage variables

The second stage variables

The third stage variables

The mean of variables

Efficiency

Energy consumption

Efficiency

Energy consumption

Efficiency

Energy consumption

1

The percent reduction of upper roll

2

The percent reduction of under roll

3

The angle of inclination of upper roll

4

The angle of inclination of under roll

5

The rotational speed of upper roll

6

The rotational speed of under roll

7

The position change range of pusher

8

The actual position of mandrel thrust block

9

The position of mandrel

10

The rotational speed of left guide disc

11

The rotational speed of left guide disc

12

The temperature of tube blank

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