Plazma spraying technology of powdered materials

Nezavisimosti ave, 65, building 6, Minsk, Belarus, 220013 

Ph.: 375-172-310 045

Ph/fax: 375-172-939 223

e-mail: scvdmed@bntu.by

Professor O. Devoino 

 

 

The technology may be used for spraying a large member of powdered materials and formation of hard-wearing, corrosion-resistant, erosion-resistant coating’

It is possible to spray metallic, clad and composition materials, as well as ceramic materials possessing exothermal effect.

The designed technologies have been tested for quick wearing parts used for different types of equipment – oil, petrochemical, drilling, for gas processing equipment, for automobile and tractor industry, textile production, shut-off armature of power equipment, in shafts, rods, battery cartridge, bush of pumping equipment. The wear resistance of parts, as a rule is increase in 3-5 times as contrasted to serial ones.

The main characteristics of the unit for plasma spraying are given in table 2.

Table 2

Main specification

Values of parameters

1

Voltage of an arch, (V)

90...95

2

Current of the arc dischargingm, (A)

220...250

3

Gas consumption, (L/min)

- formationing gas (nitrogen)

- transporting gas (nitrogen)

 

60

4…5

4

Maximal output (kg/hour)

4

6

Output ratio of the powdered material (%)

up to 95

5

Distance of spraying (mm)

120

 The contracts on the delivery of the unit include the following list of operations:

a) organization of a working place for strengthening and reconditioning of the parts for the customer;

b) trengthening an experimental bath of the parts, transfer of know-hows, servicing staff training;

c) ransfer of powdered materials for strengthening of an experimental bath of parts.