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1. Hardened counter pressure cylinder coated with special synthetic rubber.

2. According counter pressure casting technique and structure of aluminum alloy wheels, designing of molding system and optimized mold has been discussed.

3. It also Provides a Constant Counter Pressure to the Lumbar in All Tilting Positions to Encourage Optimum and Balanced Dynamic Posture.

4. This blade can be used to produce counter pressure gradient at cascade passage end, reduce secondary flow loss, increase the efficiency of IP casing consequently, and improve the heat rate of units.

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5. Under PPB, SV increased significantly when chest counter pressure was equal to the mask pressure.

6. The fluid surface forcing control system applied on counter pressure casting is built based on the combined digital valve as the main flow control component.

7. Sample aluminum wheels of automobiles and special vehicles by counter pressure casting, have a compact microstructure inner, with fine grains, without air holes, and with no loosen.

8. Tensile strength of sample special vehicle ZL205A aluminum alloy wheels made by counter pressure casting is with no heat crack, loosen or other defects.

9. The forming accuracy of flat and round bottomed cylindrical shells formed by hydraulic counter pressure deep drawing is investigated.

10. The result suggests that the compensatory effects is determined mainly by the body surface region on which the counter pressure is applied, but the surface area is also an important factor.

11. The paper introduces the design and calculation of a counter pressure casting equipment, to provide the designers and users with experience and technical reference.

12. Elongation of Al casting can be more than 10% by means of counter pressure casting, in which alloy composition and impurities contents are closely controled, and heat treating procedure is adjusted.