Straight-barrel-shaped tungsten crucible

Abstract

A straight cylindrical tungsten crucible includes a crucible body with a cylindrical structure and a carrier plate horizontally arranged in the crucible body. There is a prism horizontally protruding from the inner wall of the crucible body. The two edges of the carrier plate are placed on the prism. The center of the carrier plate is provided with a blanking hole. The surface of the carrier plate is spaced with drainage grooves. The drainage grooves are along the diameter of the carrier plate. A through hole vertically penetrating the material carrier plate is spaced between two adjacent drainage grooves. The invention has the advantages of simple structure, stable operation, long service life, safety and reliability, and easy maintenance and replacement.

Description

technical field [0001] The invention belongs to the technical field of crucibles, in particular to a straight cylindrical tungsten crucible. Background technique [0002] Tungsten crucible is one of metal tungsten products. Because of its high melting point and boiling point, good high temperature strength, wear resistance and corrosion resistance, high thermal conductivity, small thermal expansion coefficient and good hardenability, tungsten crucible is widely used in rare earth smelting, quartz glass, In industries such as electronic spraying and crystal growth, the working temperature environment used is generally above 2000°C. Most of the existing tungsten crucibles have a barrel-shaped structure. In actual use, the raw materials to be melted are often put directly into the tungsten crucible, and then put into a high-temperature furnace for metallurgical melting. The raw materials are directly stacked in the tungsten crucible and The inner wall of the tungsten crucible ...

AI Technical Summary

Problems solved by technology

Most of the existing tungsten crucibles have a barrel-shaped structure. In actual use, the raw materials to be melted are often put directly into the tungsten crucible, and then put into a high-temperature furnace for metallurgical melting. The raw materials are directly stacked in the tungsten crucible and The inner wall of the tungsten crucible is in direct contact, and the bottom of the tungsten crucible directly bears the weight of the raw material. In a high-temperature environment, long-term use will cause the bottom of the tungsten crucible to break. Since the tungsten crucible is of an integrated structure, the entire tungsten crucible will be unusable. , and the raw materials are directly stacked in the tungsten crucible, the uneven temperature distribution will cause different thermal stresses in each part of the tungsten crucible, which will easily cause large local deformation and reduce the service life of the tungsten crucible

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