Unlock instant, AI-driven research and patent intelligence for your innovation.

Vacuum electric arc remelting apparatus and process

A vacuum arc remelting and process technology, used in electric heating devices, electric furnace heating, electrical components, etc., can solve problems such as shortening the life of parts

Inactive Publication Date: 2002-05-29
GENERAL ELECTRIC CO
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These areas where solute-poor material and oxides are present are the sites of early cracking, resulting in reduced life of parts made of this material

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vacuum electric arc remelting apparatus and process
  • Vacuum electric arc remelting apparatus and process
  • Vacuum electric arc remelting apparatus and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] According to the present invention, the crucible wall of the vacuum arc remelting process is textured to increase its surface area, and the textured crucible wall can increase the mechanical stability of the shelf when it is melted at the bottom and formed at the top sex. A textured surface is an uneven or disordered surface with increased surface area compared to a flat surface. This surface can be grooved as shown, or patterned, or corrugated with alternating ridges and ribs. The surface features may be grooves, pleats, indentations such as grooves or dimples, or the surface may be formed with furrows, corrugations or ridges.

[0021] These and other features, which will be apparent from the accompanying drawings and the detailed discussion that follows, are presented by way of example, and not limitation, of the description of preferred embodiments of the invention.

[0022] Fig. 1 is a schematic cross-sectional view of a vacuum arc remelting furnace 10, figure 2 ...

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

PUM

No PUM Login to View More

Abstract

A VAR process is provided in an apparatus characterized by a crucible wall that provides a stable shelf anchor. The VAR apparatus includes a furnace chamber, a consumable electrode formed of a material to be remelted within the furnace chamber and a crucible within the furnace chamber. The crucible has a wall that forms a vessel to collect melt material from the consumable electrode. At least part of the wall is textured to provide area for mechanical stabilization of the shelf as the underside of the shelf melts and the upperside of the shelf forms. In a vacuum arc remelting process, a consumable electrode is loaded into a furnace chamber above a cooled crucible having a textured wall that forms a vessel to collect melt material from the consumable electrode. The process includes striking a direct electric current between the electrode and a bottom of the crucible to cause melting of material from a tip of the electrode. Melt material is collected from the tip in the crucible. The melt material is cooled to form an ingot characterized by a shelf of solidified material forming adjacent the textured section of the crucible wall in advance of a lower boundary of solidifying material.

Description

technical field [0001] The invention relates to a vacuum arc remelting (VAR) device and its technology. Background technique [0002] Vacuum arc remelting is a process for the controlled solidification of segregation-sensitive alloys. In this process, a cylindrical alloy electrode is loaded into a water-cooled copper crucible in a furnace. The furnace is evacuated and a DC arc is ignited between the electrode (cathode) and the starting material at the bottom of the crucible (anode). The arc heats the starting material and the electrode tip and eventually melts both. As the tip of the electrode melts, the molten metal drips into the crucible below. A liquid bath is maintained in this process down to the semi-freezed zone, which is the transition zone to the fully solidified ingot. The diameter of the crucible is larger than that of the electrodes. Therefore, the shrinking electrode should move down towards the surface of the anode pool to maintain a constant average dist...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F27B14/04C22B9/187C22B9/20C22B9/21F27B14/10F27D11/08H05B7/07
CPCH05B7/07F27B14/04
Inventor M·G·本兹M·F·亨赖小W·T·卡特B·P·比莱
Owner GENERAL ELECTRIC CO