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PREPARATION LINES OF SOLID WELDING WIRE

 

 

Function of the Preparation lines

The Purpose of preparation is to remove the oxide coating on the surface and coat the surface with borax to lower the possibility of producing broken filament and wire fracture .This will also extend the life of the drawing die and improve the speed of the drawing to finish the work smoothly.

STRUCTURE:

Turret-type Pay-off Rack, Mechanical Descaling Machine, Electrolysis Pickling Tank, Cold Water Rinsing Tank, Boronation Tank, Drying Box.

 

 

TURRET-TYPE PAY OFF RACK

 

The machine will pay off the wires automatically if the wire rod is in order. When the wire jumbling is produced, a dead-stop device is provided to stop the machine to avoid snapping the wire rod. Each preparation line is equipped with two turret-type pay off racks to enable changing the wire rod without stopping the machine.

 

MECHANICAL DESCALING MACHINES

 

The descaling machine is one set of equipment of preparation lines. It is used to shuck the oxide coating on the surface of the wire rod to enable convenient drawing and ensure good quality of the plated copper. The working principle is that the oxide coating on the surface of the bending wire rod will be loosened and shucked from the base of the wire rod goes through the shucking wheel and bent in multi-direction. The quality of a descaling machine depends on the life time of descaling roller and the completing of descaling the coating .The wire rod shall be bent sufficiently in multi-direction to achieve sound effect of shucking the coating. Larger bending angle and smaller bending radius will provide better effect. However, the power and electrical energy consumption will be in creased. Therefore, a rational balanced point shall be found. Unique bending curve and multi-directional bending created by us is: The wire rod shall be bent in (horizontal and vertical direction )90° to stretch the periphery. During the bending in the same direction (horizontal and vertical), the wire rod shall be folding bent with angle of more than 180°.This will shuck the oxide coating of the surface easily .The unique material of our descaling roller ensures long life time.

 

ELECTROLYSIS PICKLING

 

In order to remove the ferriferous oxide on wire rod surface, this procedure is used to converse the rust oxides into salts through the chemical reaction between sulfuric acid and the ferriferous oxide on wire rod surface. Purpose of the electrolysis: accelerate the chemical reaction speed and remove the oxide effectively.

Cold water rinsing:Use clean water to wash away the remained acid liquid on the wire rod taken for the pickling tank

 

BORONATION DRAWING MACHINE

 

The treatment is similar to phosphorization and liming treatment for the wire rod surface .It is used to separate the wire rod and die to enable smooth drawing.

 

Drying Machine