Technological arrangement and preparation method of minimal-specification tire cord steel wire rods

Abstract

The invention relates to a technological arrangement and preparation method of minimal-specification tire cord steel wire rods. The technological arrangement of the minimal-specification tire cord steel wire rods comprises a high-speed wire rod production line and further comprises a minimal-specification rolling production line arranged behind the high-speed wire rod production line. The minimal-specification rolling production line comprises a cluster mill unit. After a gathered roll is collected, the temperature of tire cord steel is kept at 400-600 DEG C, then minimal-specification continuous rolling is conducted, and rolling is conducted for 10-20 passes. By the adoption of the technological arrangement and preparation method of the minimal-specification tire cord steel wire rods, the minimal-specification tire cord steel at the dimension of phi4.5 mm-phi1.6 mm can be produced, the fault rate is effectively reduced in the wire rod production process, the labor consumption, the machine consumption, the equipment consumption and the like of the follow-up drawing step are greatly reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting wire rod production, and relates to a process layout and preparation method of cord steel wire rods with extremely small specifications. Background technique [0002] Cord steel is mainly used to make radial wires of automobile tires. It is one of the steel types that are difficult to produce in wire products. With the rapid development of the automobile industry, the demand for cord steel for tires is becoming increasingly strong. At present, the main specifications of domestic high-end wire production are Ф5.0mm~Ф25.0mm, and then the wire rod needs to be drawn to Φ0.15mm~Φ0.38mm through the drawing process. Taking Φ5.5mm wire rod as an example, the drawing process is generally As follows: 1) Initial drawing to Φ3.0mm~Φ3.5mm; 2) 980℃~1050℃ austenitization, lead bath quenching; 3) Intermediate drawing to Φ0.8mm~Φ1.6mm; 4) 980℃ ~1050℃ austenitization, lead bath quenching; 5) electr...

AI Technical Summary

Problems solved by technology

During the drawing process, the area reduction rate can reach 99.9%, and the elongation rate can reach more than 1600 times. During the whole drawing process, the process is complicated and requires multiple heat treatments, resulting in the consumption of manpower, machinery, equipment, etc., based on the needs of downstream users , the smaller the original size of cord steel wire rod, the less difficult it is for users to process, so there is a strong market demand for small-sized cord steel wire rod

However, the minimum specification produced by the high-speed wire rod production line is only Φ4.5mm, most manufacturers can produce up to Φ5.5mm, and the production line equipped with wire reduction and sizing can produce up to Φ5.0mm, and the smaller the production specification, the lower the output , the higher the rolling line failure rate

[0003] In order to solve the problems that the existing high-speed wire rod production line produces small-sized cord steel with a high failure rate and cannot produce extremely small-sized (Φ4.5mm~Φ1.6mm) cord steel, etc., the present invention provides a preparation method for extremely small-sized cord steel wire rods. The method and process arrangement can produce Φ4.5mm~Φ1.6mm extremely small-sized cord steel, effectively reducing the failure rate in wire rod production, greatly reducing the consumption of manpower, machinery, equipment, etc. in the subsequent drawing process, saving production costs, energy saving and environmental protection , improve the economic efficiency and competitiveness of enterprises

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