Papers by Author: Hong Yan Hao

Abstract: On the basis of the CT mountings’ technology characteristics produced by Furan resin self-hardening sand, and aiming at the easy appearing defects in the progresses, the reasonable solution had proposed. Practice has proved that, through the scientific selection of raw and auxiliary materials, controlling the molding the environment conditions and strict management of key processes, can improve product quality to meet customer needs.

Abstract: The brushless constant-voltage synchronous generators are fitted with thyristor voltage regulator excitation system. The excitation current can be regulated automatically in accordance with the variation of load, resulting in constant voltage. This style of excitation has excellent kinetic in the condition of load-variation and short-circuit.