A method for flexible manufacturing of steelmaking

Abstract

The invention belongs to the technical field of metallurgy, and relates to a method for achieving steelmaking flexible manufacturing. The method includes the following steps that molten iron in ladlesis added into a primary smelting furnace to be subjected to primary steelmaking in a steelmaking workshop, and after steelmaking is completed, qualified molten steel in the primary smelting furnace is tapped multiple times and poured into multiple steel ladles; the molten steel in the different steel ladles enters refining furnaces corresponding to the molten steel in the following process according to a production plan, and corresponding refining operation is carried out; and qualified molten steel obtained after refining enters needed continuous casting machines to be cast. During application, the primary smelting molten steel in the primary smelting furnace can be quantitatively refined according to the requirements, customized production of products is achieved, a response is made tothe multi-variety and small-batch production requirements rapidly, the delivery cycle of the products is shortened, and wider requirements are met. Cost allowances brought by molten steel full-dose refining quality control in the steelmaking process can be reduced. Due to the application of the method, more diversified matching relationships between the primary smelting furnace, the refining furnaces and the continuous casting machines can be achieved, and flexible manufacturing in the steelmaking process is enhanced.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to a method for realizing flexible steelmaking manufacturing. Background technique [0002] Iron and steel enterprises are typical process-based manufacturing enterprises. The traditional production mode is to carry out large-scale production based on market forecasts, and formulate technological processes with the goal of economical production batches or even large-scale production to obtain economies of scale. The production process is rigid and production Organization is inflexible. In the past 20 years, with the rapid development of my country's steel production, the number of similar products on the market has increased sharply. With the slowdown of economic growth, economic development has changed from high speed to high quality, and the competition of similar products in the steel market has become increasingly fierce. Large-scale production The limitation of the model is hig...

AI Technical Summary

Problems solved by technology

Therefore, it is unreasonable to go through the pretreatment of molten iron, primary smelting in converter, and refining of molten steel for the full amount of molten iron / steel. To increase the output of molten steel in a limited workshop, large-scale primary smelting equipment is required. However, under the current process flow, large-scale The primary refining equipment corresponds to large refining equipment and slab continuous casting machines, which will inevitably lead to a large output of a single variety and a small variety, prolonging the delivery time of small varieties

Typical problems If a converter with a nominal capacity of 300 tons is used, refining equipment of a corresponding size must be configured and only slab continuous casting machines can be configured, which limits the product variety

If a tundish is added after the primary smelting furnace to connect the primary smelting furnace and the refining furnace, it will inevitably cause energy waste and is not compatible with the current development trend of intensive production

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