Cast iron mold with gap interlayer

Abstract

A cast iron mold with a gap interlayer comprises a bottom layer, a working layer and a gap layer arranged between the bottom layer and the working layer, the bottom layer and the bottom of the working layer are welded and connected through cotter pins, supporting blocks are located on the peripheral edge of the cast iron mold and are adopted for welding and supporting, cotter pin welding is that the cotter pins penetrate through the bottom layer and the working layer, and the two ends of the cotter pins are welded through plug welding seams. The thickness of the working layer is 1 / 2 of that of the bottom layer. The gap layer is arranged between the working layer and the bottom layer, a large amount of cooling water sprayed on an iron block can enter the gap layer between the working layer and the bottom layer during cast iron production, meanwhile, the working layer and the bottom layer are cooled, the thermal load of the working layer and the bottom layer is reduced, therefore the thermal fatigue life of the cast iron mold is prolonged, and the replacement frequency of the cast iron mold is reduced.

Description

technical field [0001] The invention relates to a vulnerable part of auxiliary equipment for blast furnace ironmaking, in particular to a cast iron mold with a gap interlayer for a cast iron machine. Background technique [0002] Iron casting machine is an indispensable auxiliary equipment for iron and steel enterprises. Its function is to continuously cast molten iron produced by blast furnace or non-blast furnace ironmaking process into iron blocks. The molten iron produced is continuously cast into iron blocks to ensure the continuous and normal production of the ironmaking blast furnace, and at the same time, it can effectively solve the safety problems in the transportation of the blast furnace molten iron to different places and the large power consumption problem caused by the cooling of the molten iron. It is a necessary molten iron continuous casting equipment for domestic and foreign iron and steel enterprises. [0003] The cast iron mold accounts for about 35% of...

AI Technical Summary

Problems solved by technology

It can be seen that under the working conditions, the cast iron mold is under the alternating heat load for a long time, the working condition is very bad, thermal fatigue cracks or fractures are prone to occur, and frequent shutdowns and replacements occur, which affects the comprehensive production capacity of the cast iron machine

The same industry in China has also optimized the structural design of cast iron molds to varying degrees. The selection of materials has been continuously explored and tried, experimented with gray cast iron, nodular cast iron, heat-resistant cast iron, low-carbon cast steel, etc. Composite refractory material in the inner cavity and heat-resistant steel in the working layer. These improvements have achieved certain results, but they are not very ideal. The main performance is that the life of the cast iron mold is not up to expectations and the operating cost of the equipment is high.

Images