Globe valve, also known as the cut-off valve, is a forced-sealed valve, so the valve is closed, the pressure must be applied to the valve flap to force the sealing surface does not leak. When the medium from below the valve into the valve, the operating force needed to overcome the resistance is the valve stem and packing friction and the thrust generated by the media pressure, off the valve force than the valve open, so the valve stem The diameter should be larger, otherwise it will happen valve stem bend. According to the connection is divided into three kinds: flange connection, threaded connection, welding connection. From the self-sealing valve appears, the cut-off valve to change the flow of medium from the top of the valve into the valve chamber, then under medium pressure, the valve closed the force is small, and open the valve force, the stem diameter can be To reduce. At the same time, in the medium, this form of valve is also more stringent. China's valve "three to" have provided that the flow of the valve, all from top to bottom. When the globe valve is opened, the flap opening height is 25% ~ 30% of the nominal diameter, the flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the full-stop position of the valve, valve stroke should be determined.
The main machine consists of a bed, a double-layer precision workbench, a sliding mechanism for adjusting the top seat, a sliding assembly for the top seat, a moving and driving system for the table, a rotating and driving system for the spindle, a rotating and adjusting mechanism for the parts, a matching balance, a cover frame, and an electrical numerical control part. CNC quenching transformer can be used to move up and down the lifting table at a constant speed, chuck or thimble fixed roll or shaft rotation at a constant speed, inductor water quenching while. The machine tool adopts advanced numerical control technology, through programming can realize continuous scanning quenching, quenching at the same time, section continuous scanning quenching, section quenching at the same time. The machine tool is driven by a stepper motor controlled by a programming controller, while controlling the heating equipment and workpiece rotation as well as liquid injection. The body is made of steel plate and channel steel structure, and the guide rail is made of cylindrical linear rolling guide. The workpiece moving drive screw is ball screw, and the top moving drive is T screw.
Main configuration of quenching machine host:
1. Numerical control system control;
2, stepper motor drive;
3, ball screw transmission;
4, cylindrical linear guide, ball slider sliding;
5. Ac speed regulating motor drives the sprocket chain, and the optical bar rotates the workpiece;
6, AC reducer motor drive lead screw, lead screw is the top lifting;
7, solenoid valve control water spray;
8, equipped with control heating equipment plug.
Main features of quenching machine host:
1, the use of numerical control technology, with connection, at the same time, segment connection, segment at the same time and other quenching functions.
2, used for shaft, disk, pin, gear and other parts of the induction quenching.
3, can be configured with integrated quenching liquid circulation cooling system.
4, the use of profile structure body, high degree of automation.
Notes for CNC quenching machine tools: CNC quenching machine tools are used to heat quench or normalize large workpieces with industrial electric frequency, low voltage and large current. Use should comply with the safety rules of electricity.
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Ningbo Yufeng Electronics Co., Ltd , https://www.yufengheating.com