A polycrystalline crucible that can be reused many times and its forming method

A technology of multiple repetitions and crucibles, which is applied in the field of crucibles, can solve the problems of few times of reusable use, high use and production costs, and only a few times of repeated use, so as to achieve long service life, enhanced corrosion resistance, Good toughness and stability
CN109437874BActive Publication Date: 2021-11-23贵州大东风机械有限公司
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
贵州大东风机械有限公司
Publication Date
2021-11-23
Patent Text Reader

Abstract

The invention discloses a multi-reusable polycrystalline crucible and a molding method thereof, and relates to the technical field of crucibles; the polycrystalline crucible is composed of the following raw materials according to the percentage of the total weight of raw materials: fused silica 25%-35 %, low porosity corundum 25%-35%, zirconia 10%-40%, chromium oxide 10%-30%. Fused quartz, low porosity corundum, zirconia, and chromium oxide of the present invention interact with each other after melting at high temperature to change the crystal structure between the components; in addition, after the raw materials are melted at high temperature, the crystal phases recombine to form a The mullite phase improves the heat resistance of the crucible, the baddeleyite phase enhances the erosion resistance of the crucible, the α-alumina phase enhances the stability of the crucible, and the glass phase enhances the compactness of the crystal; thus making The formed polycrystalline crucible has the advantages of good heat resistance, good toughness, high stability, strong corrosion resistance, and is not easy to break and break.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of crucibles, in particular to a reusable polycrystalline crucible and a forming method thereof. Background technique

[0002] At present, the existing crucibles are mainly made by knotting, sintering or pressing. Due to the current crucible formula and the finished product produced by the process are limited by production technology and formula, the heat resistance and toughness of the crucible are poor. , poor stability, and poor corrosion resistance, resulting in short average life of the products produced, easy to break and break, and high use and production costs, resulting in high scrap rates. In addition, most of the existing crucibles are disposable crucibles, and some crucibles can be reused. However, the life of the crucibles for melting metals is short, and the number of reusable times is small. Generally, they can only be used several times. Contents of the invention

[0003] Therefore, in vie...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More