Manufacturing device of ultra-large type special thick plate rectangular ingotblank

Abstract

The invention discloses a manufacturing device of an ultra-large type special thick plate rectangular ingotblank. The manufacturing device of the ingotblank comprises a water-cooling metal mould chassis on which a water-cooling metal mould is arranged; the top of the water-cooling metal mould is provided with a heat insulation and heat preservation dead head; the interior of the water-cooling metal mould is a taperless rectangular hollow cavity which is through up and down; and the hollow cavity of the water-cooling metal mould is internally through and is provided with a width delivery device. By adopting a taperless water-cooling metal mould structure based on a traditional roller manufacturing technology, the invention can eliminate the taper of a casting, lower the higher requirement for the opening degree of a rolling mill, reduce the impact of the taper to the rolling of the rolling mill at the initial stage and ensure that the produced ingotblank more approaches to a finished plate in shape. The manufacturing device is provided with the width delivery device by combining the characteristics of the ultra-large type rectangular ingotblank, thereby ensuring that the filling of liquid steel and the formed temperature field are more uniform, avoiding the occurrence of cracks and trapped gas conditions, being beneficial to the upward flotation of impurities, and improving the quality of the ingotblank. The width delivery device has simple structure and convenient use.

Description

technical field [0001] The invention relates to an ingot manufacturing device in the field of metallurgy, in particular to a manufacturing device for a super-large extra-thick plate rectangular ingot. Background technique [0002] As a well-known technology by the public, continuous casting has been widely used in slab manufacturing. It is characterized by high efficiency, good quality, and high effective metal utilization rate. It is especially suitable for mass production of a single material, such as: thin slab, medium Production of slabs and medium-thick slabs with a thickness of less than 400mm. However, for plates for super large ships, plates for nuclear reaction equipment, plates for chemical reaction vessels in the chemical industry, plates for hydroelectric power generation, plates for marine structures, etc., the billets are produced in a single batch with small batches and large specifications (ultra-wide, Ultra-thick, finished material thickness ≥ 200mm), mater...

AI Technical Summary

Problems solved by technology

This steel ingot mode manufacturing method includes square ingot, polygonal round ingot and flat steel ingot etc., and the defective of existence is: (1) the mold used all has taper, therefore, shaping mostly is tapered shaping, and shaping shape It is quite different from the finished material, and requires a higher opening degree for the rolling mill. At the same time, the riser has a relatively large cutting head, and the finished product rate is relatively low, which limits the tonnage of the steel ingot (currently, the existing technology can only produce ingots below 50 tons) (2) Using a single injection hole for molten steel casting, resulting in uneven temperature distribution of molten steel and local cracks, etc. During top casting, there will also be excessive momentum of molten steel that will cause gas entrainment, and impurities will not easily float up, etc. problems, thereby affecting the quality of the ingot

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