Thin steel wire atomizing cooling treatment method and device

Abstract

The invention discloses a thin steel wire atomizing cooling treatment method and a thin steel wire atomizing cooling treatment device. Steel wires of different steel numbers and diameters can be cooled simply by changing the ratio of cooling water to compressed air and the cooling capacity of a system instead of changing the cooling medium. Meanwhile, a two-stage segmental cooling method is adopted to ensure the temperatures of the core parts and surfaces of the cooled steel wires are more uniform, so the heat treatment performance of the steel wires is improved and the quality of the steel wires subjected to heat treatment is more stable. Therefore, when the method and the device are used, the process is simple, pollution is avoided, and cooling water can be utilized circularly; and the method can replace a high-temperature lead patenting process effectively.

Description

technical field [0001] The invention relates to a method and device for heat treatment of steel wire, in particular to a method and device for atomization cooling treatment of fine steel wire. Background technique [0002] At present, the intermediate heat treatment and final heat treatment of domestic medium-carbon steel wire and high-carbon steel wire are widely used in the traditional process of high-temperature air normalizing and high-temperature lead quenching. In production, after heating, dozens of steel wires are very close to each other and pass side by side over or inside the lead tank with a temperature of about 500°C for air normalizing or high-temperature lead quenching. The only advantage of this process is that the production is stable and it is relatively easy to ensure the mechanical properties of the finished steel wire. But its shortcoming is many, and quite serious. For example, causing environmental pollution. The melting point of lead is 327°C, and ...

AI Technical Summary

Problems solved by technology

Secondly, the production investment is large, and a lead tank uses about 50 tons of lead

Third, the production consumption is large

Fourth, energy consumption is high

Due to the inhomogeneity of the local water temperature in the water tank, the cooling of each steel wire is not uniform, so the heat treatment performance of the steel wire using this water bath cooling method is unstable and cannot be industrialized.

[0004] A quenching and cooling device for steel wire and steel rod with publication number CN201367452 has the defect that the process cooling capacity cannot be continuously adjusted online, and the cooling capacity is uncontrollable

Moreover, only the rapid supercooling stage of steel wire water quenching cooling is considered, and the inconsistency between the core temperature and surface temperature of the steel wire due to rapid cooling is not considered. After the steel wire passes through the cooler for a few seconds, the temperature rises by tens of degrees, and even reaches the embrittlement zone. , resulting in unstable heat treatment quality of steel wire

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