| 摘要 |
PROBLEM TO BE SOLVED: To provide a solenoid control valve with good responsiveness performance which suppresses the vibration to the structure of a mother machine to improve the proportional solenoid control valve hysteresis performance. SOLUTION: In this solenoid control valve for performing switching of outflow direction and flow rate regulation, a main spool 2 is made of light metal, and the surface of the main spool 2 is subjected to hardening treatment.
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