... slag, mountain mud, silt, etc. as raw materials to carry out a strong mixing, vacuum processing, and then the screw auger ... make better for the machines' concentrically. 7. Techniques of squeeze out cylinder and vacuum chamber: the whole processing, quenching processing, ... life. 8. Vacuum chamber: adopts the funnel shape, it can pull out the vacuum fatly. 9. Reamer techniques: adopts the high chromium ...