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Zinc spraying machine 180 Model

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PRODUCT DESCRIPTION

Zinc spray machine 180 model

Description


Zinc spraying machine is especially designed for seam coating for welded tubes .it is the only suitable model for zinc spraying on welded tubes at present in China .



Feature

1.Higher spraying efficiency ,safe and easy operation

2.Higher adhesive force between the coating and the substrate.

3.Higher rate of zinc deposition-75% above

4.Even and stable feeding speed,ensuring swift and reliable arc generation

5.Capacity of continuous and stable long working time

6.It’s especially suitable for zinc-patching of weld seam in tube welding line


Technical Parameters

The complete set of equipment consists of a 250 high-speed arc spray gun and a 180 model arc spraying machine 

User prepare:air compressor ,air cleaner 


Table 1 (Basic parameter)


Item

Basic parameters

1

Weight of Spray Gun

2.65kg

2

Operating pressure /Consumption of spray gun

0.5Mpa/2.87m3/min

3

Wire-feeding pulling force of spray gun

9.8kg

4

Wire-feeding speed of spray gun

Stepless spreed regulation

5

Weight of arc spraying machine

120kg

6

Input power supply

380V (three-phase)50Hz

7

Maximum output current

180A

8

No-load output voltage

20-27V

9

Arcing time factor

(180A)100%

10

Temperature

85

11

Characteristic

Flat characteristic 


Table2  Main technical parameters(for reference)


Spraying material

Wire diameter(mm)

Frequently-used working current(A)

No-load voltage(V)

Maximum efficiency of spray painting(kg/h)

Zinc wire

Φ1.0-φ2.0

20-180

20-29

4-16



Schematic diagram of electric arc spraying



Principle :act as consumable electrodes ,two coated metal wires are fed at a constant speed and are melted by electric arc produced between ends of two metal wires . Subsequently ,melted metal wires are atomized into small-grained and evenly distributed particles and are sprayed onto workpieces’ surfaces by compressed are flow to form coatings , When operation of spray coating is performed ,two wires intersecting wire each other at an angle are (30℃-40℃ at usual conditions )are continuously fed and respectively connected wire power supply’s positive and nagative electrodes ,Arc is generated at the ends of metal wires ,Under the action of power supply ,stable combustion of arc is maintained ,Behind the point where the arc is generated , melted metal wires are atomized into fine particles and sprayed onto pre-treated substrate’s by high-speed compressed air flow so as to form coatings 


Structure of Spray gun

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