Multi-layer staggered split type high-pressure device

Abstract

The invention discloses a multi-layer staggered split type high-pressure device, relates to a synthesizing preparation device of artificial diamond and other materials and belongs to the technical field of high pressure. The multi-layer staggered split type high-pressure device comprises split blocks (2), fixing rings (3), a pressure head, a hydraulic cylinder and a machine frame and is characterized in that multiple layers of split blocks (2) are arranged in staggered mode, the split surface of each split block (2) is a plane or curve surface, and connection surfaces of the fixing rings (3) and the split blocks (2) and connection surfaces of layers of the split blocks (2) are respectively tightly matched. Pressure loading capacity and service life of the multi-layer staggered split type high-pressure device can be remarkably improved.

Description

technical field [0001] The present invention relates to a multi-layer staggered split type high-voltage device, in particular, to a synthesis and preparation device for superhard materials such as synthetic diamond, cubic boron carbide and its products, and new materials that cannot be prepared under "normal pressure". It belongs to the field of high voltage technology. Background technique [0002] The current ultra-high pressure devices mainly include six-sided roof devices and two-sided roof devices. The multi-cylinder synchronization of the six-sided top device is poor, the stroke is short, the cavity is small, and it is difficult to obtain high cavity pressure; the two-sided top device can accurately control the pressure and temperature, and mainly produces gem-quality diamonds and other products. According to the different objects to which the pretightening force is applied, the double-sided roof device can be divided into annual ring type, winding type and wedge bloc...

AI Technical Summary

Problems solved by technology

According to the different objects to which the pretightening force is applied, the double-sided roof device can be divided into annual ring type, winding type and wedge block type. Among them, the annual ring type generates prestress through the interference fit of multi-layer steel rings to increase the strength and rigidity of the device. , but the resulting pre-tightening force is limited; the winding type is wound by a high-strength thin steel strip or steel wire at a certain tension, and its pre-tightening force is large and the structure is compact, but its pre-tightening force still has a certain limit

The wedge-shaped double-sided roof device uses the principle of "dividing before cracking" to only divide the inner cylinder to reduce the tensile stress of the cylinder in the circumferential direction, but it will increase the burden on the outer steel ring correspondingly, and the outer steel The force on the ring is not uniform, and it is easy to generate stress concentration at the split surface

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