Long material horizontal hot plating equipment and hot plating method

Abstract

The invention relates to long material horizontal hot plating equipment and a hot plating method. The hot plating equipment comprises a horizontal overflow hot plating device; the horizontal overflowhot plating device comprises a high-temperature resisting pipe, a high-frequency power supply, a main zinc pot, an overflow zinc pot and a protective gas source; the main zinc pot holds a hot platingmaterial; the upper parts of the main zinc pot and the overflow hot plating zinc pot are both sealed; a branch pipe for introducing a protective atmosphere is arranged at the middle part of the high-temperature resisting pipe; a high-frequency induction coil sleeves the front part of the high-temperature resisting pipe, and is connected with a high-frequency induction power supply; the tail end ofthe high-temperature resisting pipe is tightly connected with a workpiece inlet of the overflow zinc pot; a temperature measuring gauge is arranged near the tail end of the high-temperature resistingpipe; the overflow zinc pot is positioned above the main zinc pot; long material workpieces transversely penetrate through the overflow zinc pot; a lifting pump is arranged on the overflow zinc pot;and an overflow port is arranged above the overflow zinc pot. The equipment can provide a closed protective gas system to long materials, and finishes continuous hot plating process for the long materials.

Description

technical field [0001] The invention relates to the hot-dip technology in the metallurgical industry, in particular to a long product horizontal hot-dip equipment and a hot-dip method. Background technique [0002] In the prior art, the hot-dip galvanizing of long products adopts the process of solvent blowing plating method: degreasing—washing—pickling—washing—helping plating—drying—hot dipping—lifting the workpiece to the roller table for wiping with an air knife—water cooling—passivation— finished product. The so-called blow-plating refers to the long products that have been pre-treated, dipped in the plating flux, dried, and rolled down one by one into the zinc pot by the conveyor frame, and then lifted by the lifting device for air knife blowing to complete the hot-plating process. The zinc pot used in this process is the same as the usual batch hot-dip galvanizing pot. The size of the zinc pot depends on two factors: the size of the workpiece and the heat capacity of ...

AI Technical Summary

Problems solved by technology

Therefore, the size of the zinc pot is relatively large, resulting in a large zinc capacity and high energy consumption

In addition, the pretreatment also adopts the degreasing-pickling process, which has serious pollution

The pre-galvanized workpiece is also immersed in the zinc pot in a cold state, and is heated to the galvanizing process temperature by the zinc liquid, which takes a long time, so the production efficiency is low

[0003] In summary, the current blowing and hot-dip plating process for long products has problems such as high pollution, low efficiency, high cost, and different processes for different products.

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