Light and long-service-life tundish cover and manufacturing method thereof

Abstract

The invention discloses a light and long-service-life tundish cover and a manufacturing method thereof. The tundish cover comprises a steel structure, fireproofing filling layers, a fluxing hole and a stopper rod hole, wherein the steel structure comprises a stainless steel frame and a stainless steel net; the stainless steel net is arranged in the stainless steel frame; the lower side of the stainless steel net is connected with an anchoring piece; and light fireproofing filling layers are arranged on the upper side and the lower side of the stainless steel net. The manufacturing method comprises the following steps of manufacturing the steel structure; smashing and screening classified high-temperature-resistant glass particles; performing acid pickling and soft water rinsing on the classified high-temperature-resistant glass particles; drying and storing the glass particles; weighing the following materials in percentage by weight: 10%-20% of the high-temperature-resistant glass particles with the sizes of 8-15mm, 15%-25% of the high-temperature-resistant glass particles with the sizes of 5-8mm, 20%-30% of the high-temperature-resistant glass particles with the sizes of 3-5mm, 8%-15% of the high-temperature-resistant glass particles with the sizes of 1-3mm, 5%-10% of the high-temperature-resistant glass particles with the sizes of 0-1mm, 15%-25% of the high-temperature-resistant glass particles with the sizes of 0.088mm, 3%-8% of the high-temperature-resistant glass particles with the sizes smaller than 5mm and 0.1%-0.5% of water reducing agents; adding the materials in a sand mixer sequentially; adding 8%-15% of running water in the sand mixer in percentage by weight; adding hydrochloric acid in the sand mixer and adjusting a PH (potential of hydrogen) value to 3-5; adding 1%-3% of initiating agents in the sand mixer in percentage by weight; stirring the mixture for 5-8 minutes; discharging pug and pouring the pug in the steel structure; performing vibration molding on the pug; placing the pug in a kiln integrally after the pug is solidified; baking the pug; and then discharging the baked pug out of the kiln. A manufacturing technology of the device is simple, and the service life of the device is long.

Description

technical field [0001] The invention relates to a molten steel container for steelmaking and continuous casting and a manufacturing method thereof, in particular to a lightweight and long-life tundish cover for steelmaking and continuous casting and a manufacturing method thereof. Background technique [0002] With the development of large-scale, light-weight, non-oxidizing full-protection continuous casting technology, the traditional tundish cover can no longer meet the requirements of production and billet quality control, and the service life of the inner lining of the cover is low, which not only affects the turnover use, Increased costs. [0003] At present, there is also a tundish cover made of special-shaped refractory bricks fired at high temperature on the market, and the manufacturing process is quite complicated. Its production process is roughly: mold making → molding → firing → cutting, grinding → pre-build → packaging → shipping → assembly → baking → put into...

AI Technical Summary

Problems solved by technology

[0004] The invention overcomes the problems of low service life and complicated process of the tundish cover in the prior art, and provides a light-weight long-life tundish cover with simple process and long service life and its manufacturing method

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