Flow steel brick dry setting method

Abstract

The invention discloses a runner brick dry embedding method. The method is characterized by comprising the following steps: placing a porous central brick in the center of a groove of a base plate, and connecting the male teeth sleeved with a sealing gasket of a runner brick with the female teeth of the central brick in a butt joint way; connecting the male teeth sleeved with a sealing gasket of a second runner brick with the female teeth of the first runner brick in a butt joint way, and connecting and tightening the bricks in sequence and till the last tail brick; placing dry quartz sand or a water-free powdery or small-particle refractory material into apertures between the runner bricks and the base plate, and performing solid filling. The method has the beneficial effects that the slits between the bricks and the base plate are filled with the dry quartz sand or the water-free powdery or small-particle refractory material, and the dry quartz sand and the refractory material are free from water, so that the runner bricks are prevented from getting wet. Molten steel does not absorb moisture while flowing through the runner bricks, so that the white-point rejection rate of steel ingots is lowered remarkably.

Description

technical field [0001] The invention relates to a brick inlay method, in particular to a flow steel brick dry inlay method. Background technique [0002] At present, the technology used for inlaying bricks in the die-casting system of steelworks is: after the flowing steel bricks are inlaid, the gap between the bricks and the chassis is filled and smoothed with small grains of brine quartz sand, and the brine quartz sand is hard and firm after drying. The flow steel brick is very stable. In addition, the joints on both sides and the bottom of the flow steel brick will not leak air when the dust in the hole of the flow steel brick is blown with compressed air. Run steel at the gap between the flow steel brick and the chassis. [0003] However, the use of brine quartz sand will bring great defects to the ingot. The composition of brine quartz sand is: salt, water, and quartz sand (ie MgCl+H2O+SiO2). Because brine quartz sand contains a lot of water, when the dry flow steel b...

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Problems solved by technology

[0003] However, the use of brine quartz sand will bring great defects to the ingot

The composition of brine quartz sand is: salt, water, and quartz sand (ie MgCl+H2O+SiO2). Because brine quartz sand contains a lot of water, when the dry flow steel brick comes into contact with brine quartz sand, it will become wet after absorbing water. When the molten steel flows through the steel brick, it absorbs water, and the water molecules decompose to produce hydrogen atoms, and the hydrogen atoms gather to form hydrogen molecules. After the molten steel solidifies, the hydrogen molecules expand the crystal structure of the steel ingot, forming small cracks (that is, white spots) ), steel ingots are scrapped after production, resulting in increased costs of steelmaking, rolling or forging, and serious economic losses

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