The operation of this circuit is similar to that of S7-4, except that the winding is connected to the rectified power supply and the rotor is connected to the thyristor circuit. Thus the excitation current and the rotor current is varied in one direction is the direction of the rotational direction of the rotor results in variable speed is controlled by potentiometer R 1. Forging is one of the two components of forging (forging and stamping), which is a processing method that makes use of forging machinery to exert pressure on metal billets and produce plastic deformation to obtain forgings with certain mechanical properties, certain shape and size. Through forging can eliminate the defects such as loose cast state produced in the smelting process of metal, optimize the microstructure structure, at the same time because of the preservation of a complete metal streamline, the mechanical properties of the forging is generally better than the same material castings. Forgings are mostly used for the important parts with high load and severe working conditions in the relevant machinery, except for the simple plate, profile or welding parts that can be rolled. Hot Forging,Forging Mine Chain Link,Custom Made Forging,Alloy Steel Forging Mine Chain Tianhui Machine Co.,Ltd , https://www.thcastings.com