Voltage fluctuations and flicker

Voltage fluctuations and flicker Voltage fluctuation and flicker are the percentage of the difference between the maximum and minimum values ​​of the voltage relative to the r.......

The meshing process of the gear drive is a complex system


The tip height correction can be used to balance and reduce the temperature rise of the root and the top of the tooth. It can also be used to reduce the temperature rise by the tooth profile and tooth root trimming method. The meshing process of the gear drive is a complex system. The lubr.......

How to choose mold material

How to choose mold material Mold selection is a very important part of the entire mold making process. The material selection of the mold needs to satisfy three principles. The mold meets t.......

Butterfly valve application

Butterfly valve application Butterfly valve, also known as flap valve, is a simple structure of the valve, but also can be used for low pressure pipe medium switching control valve work. Bu.......