Boron nitride-based side seal plate for twin-roll thin strip continuous casting and preparation method thereof

A twin-roll thin strip continuous casting, boron nitride-based technology, applied in the field of boron nitride-based side seal plates and its preparation, can solve the problems of service performance degradation of side seal materials, achieve good corrosion resistance to molten steel, and expand applications range, evenly distributed effect

Active Publication Date: 2017-11-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the contradictory technical problem that the service performance of the side seal material decreases due to the low melting point phase residue due to the addition of low melting point sintering aids, and provides a boron nitride-based side seal plate for twin-roll thin strip continuous casting and its preparation method

Method used

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specific Embodiment approach 1

[0019] Specific embodiment 1: The boron nitride-based side seal plate for twin-roll strip continuous casting in this embodiment consists of 60-80 parts by weight of boron nitride, 12-35 parts of fused zirconia, and 2 parts by weight. ~15 parts of silicon carbide, 2~10 parts of calcium borate and 2~10 parts of alumina;

[0020] The calcium borate salt is CaB 4 o 7 , CaB 2 o 4 , Ca 2 B 2 o 5 , Ca 2 B 6 o 11 , Ca 3 B 2 o 6 , Ca 3 B 4 o 9 , Ca 4 B 10 o 19 . CaB 4 o 7 10H 2 O, CaB 2 o 4 4H 2 O, CaB 2 o 4 ·6H 2 O, Ca 3 B 4 o 9 9H 2 O or Ca4 B 10 o 19 ·7H 2 O.

specific Embodiment approach 2

[0021] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the boron nitride-based side seal plate for twin-roll thin strip continuous casting is composed of 60 to 80 parts of boron nitride, 20 to 30 parts in parts by weight. It is made of fused zirconia, 8-12 parts of silicon carbide, 6-9 parts of calcium borate and 6-9 parts of alumina. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the boron nitride-based side seal plate for twin-roll thin strip continuous casting is composed of 70 parts of boron nitride and 15 parts of electrolytic Made of fused zirconia, 5 parts silicon carbide, 5 parts calcium borate and 5 parts alumina. Others are the same as those in the first or second embodiment.

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Abstract

The invention discloses a boron nitride-based side sealing plate for twin-roll strip continuous casting and a preparation method thereof, which relates to a boron nitride-based side sealing plate and a preparation method thereof. The invention aims to solve the contradictory technical problem that the service performance of the side seal material decreases due to the low melting point phase residue due to the addition of the low melting point sintering aid. The boron nitride-based side seal plate for twin-roll thin strip continuous casting is made of boron nitride, fused zirconia, silicon carbide, borate and aluminum oxide in parts by weight. The method: 1. Weigh the raw materials; 2. Prepare the composite powder; 3. Put the composite powder into a hot-pressing mold and press it to obtain a boron nitride-based side sealing plate for twin-roll thin strip continuous casting. The boron nitride-based side seal plate for twin-roll strip continuous casting prepared by the invention has fine grains, uniform distribution, and a density of 95.0% to 99.5%, and has excellent thermal shock resistance, molten steel corrosion resistance, High temperature friction and wear resistance and good thermomechanical properties and thermal stability. The invention belongs to the field of preparation of side sealing plates.

Description

technical field [0001] The invention relates to a boron nitride-based side sealing plate and a preparation method thereof. Background technique [0002] Twin-roll thin strip continuous casting technology is a new type of thin strip steel production process. As a cutting-edge technology in the development direction of the iron and steel industry, it can be directly produced from liquid steel with a thickness of 1 to The 5mm thin strip blank can complete the whole process from liquid metal to solid thin strip in a short time. In addition, it has unique advantages in obtaining special properties, and can realize the reduction production method of high-performance steel, which has received extensive attention from the world steel industry, but it still needs continuous improvement to realize industrial production as soon as possible. [0003] The side sealing plate is a leak-proof part added at both ends of the crystallization roller, which can restrain the metal liquid, promot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/583C04B35/622
Inventor 陈磊王玉金冯锐贾德昌周玉
Owner HARBIN INST OF TECH
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