Pouring device and pouring method for molded electrode rod

Abstract

The invention discloses a pouring device for mold casting of large electrode bars. The pouring device comprises a base, a middle pouring pipe, and an ingot mold for electrode bars. The base is provided with a molten steel runner. The bottom of the ingot mold is provided with a bottom plate; the center of the bottom of the bottom plate is provided with a tail brick hole communicated with the molten steel runner. The center of the top of the bottom plate is provided with a cone-frustum hole with large top and small bottom. The upper end of the cone-frustum hole is communicated with the bottom of the ingot mold, and the lower end of the cone-frustum hole is communicated with the tail brick hole. A wood block is disposed in the cone-frustum hole. The invention further discloses a pouring method for mold casting of large electrode bars. The bottom plate is added, molten steel in the molten steel runner flows from the bottom plate into the ingot mold, the speed of emergence which is too high since potential energy is converted into kinetic energy due to large height falling when molten steel emerges can be decreased, and electrode bar surface quality conditions such as ingot sputtering caused by too high emerging speed can be decreased.

Description

technical field [0001] The invention relates to the preparation technology of electrode rods, more specifically, to a pouring device and casting method for molded electrode rods. Background technique [0002] In the metallurgical process of iron and steel, it mainly includes two important links of steelmaking and pouring. Among them, pouring is divided into two parts: mold casting and continuous casting. Since continuous casting can greatly improve the yield of molten steel, it is widely used in iron and steel. In the metallurgical industry, continuous casting cannot meet the demand due to special steel types, special ingot specifications and special smelting process requirements. Therefore, die casting plays a vital role. It can not only meet quality requirements, but also achieve product specifications. Constantly expanding. [0003] see figure 1 As shown, the mold casting pouring process is as follows: After ladle 1 is set, install the argon protection pouring device, m...

AI Technical Summary

Problems solved by technology

The improvement of the above types of ingot molds has been improved in the multi-angle ingot type ingot mold, but there is no similar design for the electrode rod type ingot mold. bottom steel ingot molds, but their specifications are small-sized electrode rods (generally below Φ500mm); but for large-size electrode rod steel ingot molds, according to the search results, they are all open-type steel ingot molds (that is, steel ingot molds without mold bottoms) , when pouring molten steel, the molten steel flows directly into the ingot mold cavity after flowing through the end brick hole of the soup channel, without going through the chassis and other links), there is no separate ingot mold device with a chassis, one of the main reasons is Considering that the height between the ingot mold and the ingot will be too high, it will not only affect the pouring of the electrode rod, but also directly affect the on-site travel due to whether the crane can lift the ingot normally (the diameter of the ingot mold for the large-sized electrode rod Larger, generally more than 700mm, and the length is more than 3000mm. If an integral steel ingot mold with a mold bottom is used, when the ingot is taken off, the height of the two will exceed the standard and affect the forward movement of the site)

[0007] According to the comparison with similar foreign enterprises, when they produce such large-scale electrode rods, they generally use open-type steel ingot molds for production. However, for some demanding ones, the advanced method used is to cast large steel ingots with a vacuum pouring system, but due to The production cost of vacuum casting is high, and the requirements of each link are strict, especially the safety situation and product quality are relatively risky. Therefore, for many steel companies, this method has not been promoted yet.

[0008] To sum up, in the production of large-scale electrode rods for die casting, it is difficult to realize split steel ingot molds or bottomed steel ingot molds for such ingot molds, and in the process of pouring molten steel, the molten steel directly contacts the resistant surface on the base. If the materials are in contact with each other, after a long period of repeated use, it will cause serious wear of the base, increase production costs, and there are serious quality risks

Images