矫直工在交接班时先检查机械紧固件和液压传动系统，操作手柄及按钮能否正常。
The straightening machine checks the mechanical fasteners and the hydraulic transmission system during the shift, the operation handle and button can be normal.
介绍了液压伺服阀和位置传感器在拉弯矫直机中的应用。
The application of hydraulic servo and position sensor on stretch bender was introduced.
平行多辊矫直机是材料平整工业中十分重要的设备，但高精度液压位置伺服控制矫直机国内还很少。
Parallel multi-roller straightener is an important equipment in the materials straightening industry. But high-precision straightener with hydraulic position servo-control can hardly be made in China.
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