Hydraulic pressing vibration forming device for graphite electrode products and forming method

Abstract

The invention discloses a hydraulic pressing vibration forming device for graphite electrode products and a forming method, and belongs to the technical field of vibration forming. The hydraulic pressing vibration forming device comprises a supporting frame, a vibration device and a hydraulic loading device, wherein the vibration device is installed at the center of a base of the supporting frame; the top of the vibration device is connected with a mold through bolts; the outer side wall of the top end of the mold is sleeved with a guide plate; a vacuum cover detachably connected with a base plate sleeves the outer side of the mold; the vacuum cover is connected with a vacuum pump through a vacuumizing connecting nozzle on the side wall of the vacuum cover; a hydraulic loading device is mounted at the top of the supporting frame; and the hydraulic loading device and the vibration device are both connected with a hydraulic system. The hydraulic pressing vibration forming device for the graphite electrode products provided by the invention is simple in structure, compact in machine body arrangement, high in power amplification rate, high in response speed, stable in movement and good in linearity, and the weight of the device body is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of vibration forming, and in particular relates to a hydraulic compression vibration forming device and a forming method for graphite electrode products. Background technique [0002] Graphite electrodes mainly use needle coke as aggregate and coal tar pitch as binder. It is a high-temperature resistant graphite conductive material produced through a series of processes such as kneading, molding, roasting, impregnating, graphitization, and machining. An important high-temperature conductive material for electric furnace steelmaking, among which graphite electrode products with large diameter and ultra-high power are favored by the market. [0003] Needle coke is the key raw material for manufacturing high-power and ultra-high-power graphite electrodes. Its physical and mechanical properties are very anisotropic, and it has good electrical and thermal conductivity parallel to the long axis of the particle, an...

AI Technical Summary

Problems solved by technology

However, the production process of extrusion molding must use an extrusion machine of several thousand tons for the production of larger diameter graphite electrodes.

These large-tonnage extrusion equipment not only have a large extrusion pressure, but also have a long fuselage due to the requirements of the electrode extrusion molding method, so the weight of the equipment is very large, and the weight of the equipment body is more than 500 tons. In addition, these equipment are equipped with There is a high-power main motor, and the power of the motor reaches 300-400 kilowatts

Moreover, the large-tonnage extrusion equipment has huge investment and high energy consumption, and it is difficult to achieve the ideal level due to the flow of needle coke particles with a large diameter, so it is difficult to obtain high product quality; , first widely used in the aluminum carbon industry, especially in the production of prebaked anodes, and gradually extended to the production of cathode carbon blocks and graphite electrodes

The vibration forming mechanism used in the existing vibration forming method is relatively simple in structure, consumes a lot of power, and has a single frequency and amplitude, which cannot achieve high-frequency vibration, and it is difficult to obtain high product quality, which restricts product quality.

Images