A kind of dry quasi-isostatic pressing method and device
A quasi-isostatic pressing and dry technology, applied in the field of powder pressing and forming, can solve the problems of pressure transmission medium pollution of molded products, easy leakage of liquid medium, and high requirements for equipment sealing, and achieves the elimination of sealing safety problems, simplicity, convenience and efficiency. small effect
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Embodiment 1
[0036] Such as figure 2 The schematic diagram of the decentralized structure of the dry quasi-isostatic pressure device is shown. The device is composed of a pressure-bearing frame 1300, a high-pressure chamber 1200 and a pressure-bearing frame fixing fixture 1100. The pressure-bearing frame 1300 is composed of two completely symmetrical parts; the high-pressure chamber The body 1200 is tightly embedded in two symmetrical pressure-bearing frames 1300 , and is clamped and fixed by the pressure-bearing frame fixing fixture 1100 .
[0037] Such as figure 1 The schematic diagram of the cross-sectional structure of the dry quasi-isostatic pressing device is shown. The high-pressure chamber 1200 includes a pressure column 100, a top cover 200, a high-pressure chamber wall 300, and a bottom bracket 400; the high-pressure chamber wall 300 is cylindrical, and an isostatic High-pressure cavity 301; the high-pressure cavity 301 is filled with elastic quasi-fluid 900 with sufficient flu...
Embodiment 2
[0044] A kind of dry type quasi-isostatic pressing method, a kind of dry type quasi-isostatic pressing method, described method is to put the raw material to be pressed in the elastic mould; In the high-pressure cavity of the quasi-fluid; then pressurize the high-pressure cavity, the elastic quasi-fluid transmits the pressure evenly and applies it to the surface of the elastic mold to realize the quasi-isostatic pressing of the raw material to be pressed.
[0045] The elastic quasi-fluid with sufficient fluidity is an elastic rubber ball, the elastic rubber ball is solid, has a smooth outer surface, and has a diameter ranging from 0.5 to 5 mm.
Embodiment 3
[0047] A kind of dry type quasi-isostatic pressing method, described method is to put the raw material to be pressed in elastic mold earlier; And described elastic mold is placed in the high-pressure cavity that is full of quasi-fluid; The pressure is evenly transmitted and applied to the surface of the elastic mold to realize the quasi-isostatic pressing of the raw material to be pressed.
[0048] The elastic quasi-fluid with sufficient fluidity is an elastic rubber bladder; the elastic rubber bladder includes an elastic rubber bladder and fluid located in the bladder; the elastic rubber bladder and the fluid in the bladder are an airtight whole; the The surface of the elastic rubber capsule is smooth, the particle size range is 5-15 mm, and the thickness of the rubber capsule body is 1.5-3 mm.
[0049] The fluid in this embodiment is hydraulic oil.
[0050] The dry quasi-isostatic pressing method of the present invention will be further described below in conjunction with t...
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