Built-in gas heated steel wire continuous phosphating tank unit

Abstract

The invention relates to a built-in gas heated steel wire continuous phosphating tank unit, which comprises a phosphating tank body, and is characterized in that: a flat long fire and smoke channel box body parallel to the length direction of the phosphating tank body is arranged in the phosphating tank body; the bottom of the fire and smoke channel box body is supported and fixed by a box body bracket; a nozzle is arranged in the phosphating tank body; the fire and smoke injection port of the nozzle is downwardly communicated with the fire and smoke channel box body directly; two ends of thefire and smoke channel box body are connected with smoke exhaust pipes; and the orifices of the smoke exhaust pipes are upward and higher than the liquid level of phosphating liquid. The built-in gasheated steel wire continuous phosphating tank unit is ingenious and reasonable in structure; the fire and smoke channel box body is arranged in the phosphating tank body, and the nozzle directly aligns a fire and smoke channel for heating and combusting, the heat conduction efficiency is high, the cost is low, energy is saved, environment is protected and a field is saved; and the fire and smoke channel box body is a small flat long fire and smoke channel box body, occupies a small area in the phosphating tank body, has large heat transfer area and high heat transfer efficiency, does not influence wire passing operation, has a small slag-bonding area and a small slag-bonding amount, and ensures that the slag is easy to clean.

Description

technical field [0001] The invention belongs to the technical field of steel wire heat treatment equipment, and in particular relates to a built-in gas heating steel wire continuous phosphating tank unit. Background technique [0002] In the prior art, in order to improve the comprehensive performance of the steel wire, it is usually necessary to perform various heat treatments on the steel wire. After the semi-finished steel wire is cleaned, it needs to be coated or reacted to form a lubricating coating on the surface of the steel wire. The lubricating coating is conducive to the smooth progress of the next drawing process. [0003] At present, manufacturers generally use phosphating coating or borax coating as lubricating coating. Phosphating is to make the steel wire pass through the phosphating solution above 80℃~85℃, and after a certain period of reaction, a phosphating film is formed on the surface of the steel wire. At present, domestic and international similar prod...

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Problems solved by technology

The traditional steam coil heating method has the following disadvantages: (1) Using steam heating method, the heat in maintaining the temperature of the heat treatment phosphating tank mainly comes from the heat release when the high-temperature steam changes from gaseous state to liquid state. The demand is huge, the cost is high, and the hot water after high-temperature steam conversion is discharged, which also causes a waste of energy.

(2) The steam heating method needs to be equipped with a boiler, provide a site and related steam delivery facilities, and the steam coil needs to be arranged at least three times in the phosphating tank, which occupies a large space in the phosphating tank and has a large slagging area , the phosphorus slag needs to be cleaned every day, and the steam coil also brings inconvenience to the cleaning of the phosphating tank, resulting in waste of raw materials and labor

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