A kind of si/b hybrid resin mid-temperature reinforced non-fired slide brick and production method thereof

Abstract

The invention discloses a non-fired sliding brick made of Si / B hybrid resin reinforced at medium temperature. The raw material composition of the sliding brick is as follows: 60-70% of plate-shaped corundum particles, 15-25% of plate-shaped corundum powder , alumina micropowder 5-10%, aluminum powder 3-9%, silicon powder 1-3%, carbon black 1-3%, graphite 1-3%, boron carbide 0.5-1.0%, Si / B hybrid resin 3 ~5%. The preparation method is as follows: Weigh each component in proportion, knead for 0.5 hours and then store the material for 6 to 8 hours. According to the weight and shape of the slide, select the press to form the green body. After being hooped, glued to the steel shell, grinding, coating, finishing, and acceptance, it is stored in the warehouse. The medium-temperature reinforced sliding brick of Si / B hybrid resin produced by the present invention can obviously improve the combination of phenolic resin and non-burning Al 2 o 3 ‑C skateboard has medium and low temperature strength and good thermal stability.

Description

technical field [0001] The invention relates to a sliding brick for steelmaking, in particular to a Si / B hybrid resin medium-temperature reinforced non-burning sliding brick and a production method thereof, belonging to the production field of aluminum-carbon series sliding bricks. Background technique [0002] Sliding bricks are used in the continuous casting process of the iron and steel industry to regulate and control the flow of molten steel, or for the slag blocking and tapping system of the steelmaking furnace. Skateboards are subjected to various stresses during use, causing cracks or even breakage of the skateboard. Therefore, sufficient strength is an important requirement to ensure the safety of the skateboard. [0003] Do not burn Al 2 o 3 -C sliding plate has the advantages of energy saving, environmental protection, and simple process, but its low-temperature strength is low, and the thermal flexural strength at 500-800 ° C is only about 4-8 MPa, which is for...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: for phenolic resin combined with non-burning Al 2 o 3 - The problem of low low-temperature strength of the C slide plate, providing a slide brick and its production method that can improve the medium-low temperature strength, through the use of silicon modification, boron modification, carbon black modification and nano-alloy modification and other multi-mechanism synergy Modify the phenolic resin and its cured product to form a Si / B hybrid carbon network in the material to improve the bonding of the phenolic resin without burning Al 2 o 3 -C Skateboard's medium and low temperature strength