KR840005679A - Sliding gate valves and valve members for metallurgy - Google Patents

Abstract

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Description

Sliding gate valves and valve members for metallurgy

As this is a public information case, the full text was not included.

1 is a partial cross-sectional view of a linear sliding gate valve mounted in a metallurgical vessel.

2 is a partial plan view of the active surface of the fixed valve plate of the FIG. 1 valve.

3 is a plan view of the active surface of the fixed valve plate of the rotary gate valve.

4 is a partially enlarged cross-sectional view taken from the line IV-IV of FIG. 2;

Claims (14)

In the valve member in mutual contact action of the sliding gate valve for injection of molten metal, at least one valve member is made of abrasive material and the other valve member is made of wear-resistant material. A valve member in which a demand due to wear is formed along the direction of valve movement on the active surface, and a mixture of wear particles and metal particles is formed between the valve members to bury the aforementioned demands so that a sealing action appears between the two valve members. The valve member according to claim 1, wherein the valve member to be worn is made of graphite. The valve member according to claim 1, wherein the valve member to be worn is composed of boron nitride having a six-way lattice structure. The valve member of claim 1 wherein the wear resistant valve member is comprised of a high purity aluminum containing material. 4. A valve member according to any one of claims 1 to 3, wherein the wear resistant valve member is comprised of zirconium oxide. The valve member according to any one of claims 1 to 3, wherein the wear resistant valve member is made of aluminum titanate. The valve member according to any one of the preceding claims, wherein the valve members are formed in a plate shape with a flat active surface. A sliding gate valve for injecting molten metal provided with a valve member as claimed in any one of the preceding claims. A valve according to claim 8, wherein the wearable valve member is fixed and the wear resistant valve member is movable. 10. A valve according to claim 8 or 9, characterized in that the valve is a linear sliding valve and the demands formed in use are linearly formed. 10. A valve according to claim 8 or 9, wherein the valve is a Rotani sliding valve and the demands formed in use are formed in a circular or arc shape. According to any one of claims 8 to 11, when the valve is repeatedly operated in contact with the molten metal in the metallurgical vessel, a request according to the direction of movement of the valve member is formed by the wear on the active surface of the wearable valve member. A valve characterized in that a mixture of wear particles and metal particles formed between the valve members is embedded in a request to exhibit a sealing action between the valve members. A method of sealing an outlet of a metallurgical vessel in which one of the valve members of a molten metal injection sliding valve is configured to be abrasion and the other valve member is configured to be abrasion resistant so as to cause a sealing action between the two valve members. The active surface is brought into contact with the active surface of the fixed valve member to form a demand on the active surface of the wearable valve member in the direction of relative movement of the valve member, and a mixture of particles and metal particles caused by wear is formed between the two valve members. Method for closing the outlet of a metallurgical vessel, which is formed and made to be buried in the electrical requirements ※ Note: The disclosure is based on the initial application.