Method for manufacturing zinc-coating-steel grounding electrode continuously

Abstract

The invention discloses a continuous manufacture method of a zinc-clad steel grounding electrode and belongs to the manufacture method of metal materials. The prior art has the defect of low production efficiency and the prepared zinc-clad steel grounding electrode has the defects of poor performance and short service life. In the invention, round steel after acid cleaning is carried out on round steel, the round steel is cold drawn to a required diameter and polished; then the round steel is heated to the temperature between 200 and 300 DEG C, enters the zinc liquid in a liquation furnace and is combined with the zinc liquid; finally, the round steel comes out from the zinc liquid in the liquation furnace and forms the zinc-clad steel grounding electrode the inner core of which is steel and the outer coating is zinc by a crystallizer. The zinc of the coating is tightly combined with the steel of the core layer and is hard to be separated; the contact resistance between the zinc of the coating and the steel of the core layer is low; the thickness of the core layer is easy to be controlled and can play the role of protection on the devices and pipelines on an anode; moreover, the production efficiency is high.

Description

technical field

[0001] The invention belongs to a manufacturing method of metal materials, in particular to a continuous manufacturing method of a zinc-clad steel grounding electrode. Background technique

[0002] The grounding electrode is a conductive element buried in the ground. After practice tests, the zinc-clad steel grounding electrode has better performance and is widely favored by users. The Chinese Invention Patent Application Publication with application number 200510021757.X and publication number CN 1747236 Y discloses a "method for manufacturing zinc-clad steel grounding electrodes", which is to sequentially heat zinc ingots to 450°C-550°C to melt , cast into a cylindrical zinc ingot and cut into segments; heat the extrusion die to 250°C-300°C, heat the cylindrical zinc ingot to 200°C-260°C; put the extrusion die that has been preheated to a constant temperature into the press Inside the machine; put the prepared steel core into the press and fix it; press th...

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