In ancient times, there were no special utensils for incense burning, but copper, pottery, porcelain, tiles and wood flowers were used instead. Since handing slow to make boshan incense burner, only began to have a special name, but specia…

At present, low pressure vacuum carburizing heat treatment has been gradually applied in the automobile industry of developed countries in the world. It will gradually replace conventional controlled atmosphere carburizing (or carburizing)…

Aiming at the characteristics of time degeneration, large hysteresis and non-linearity of vacuum sintering furnace in powder metallurgy, the fuzzy control algorithm is adopted, and the PID control effect is not ideal. PID control and fuzzy…