WCN Spring 2010

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WCN Issue N° 42 21
Research and production in China
Tianjin Hengjiu Tongda Machinery Co Ltd is a high technology enterprise based in Tianjin, China, involved with the design,
development, production and service of production equipment for pre-stressed steel wire. The company is involved with
research and development into new processes, new equipment and new technology.
Tianjin Hengjiu Tongda Machinery has a strong technical force and works in cooperation with national science, technology
and design institutes. Areas where Tianjin Hengjiu Tongda Machinery Co is involved in research and manufacture include
PC steel bar production, low-relaxation PC steel wire production, low-relaxation PC steel stranded wire stabilisation
treatment, straight line-type wire drawing machinery, retarded adhesive pre-stressed steel stranded wire production,
unbonded PC steel bar production lines, and lines for oil-hardened and tempered spring steel wire production.
The business objective of the company is one of continuous innovation, advanced technology, service and quality.
Tianjin Hengjiu Tongda Machinery Co Ltd – China Fax: +86 22 2698 1345 Email:
Electrostatic powder coating from Schlicht
Rolf Schlicht’s electrostatic powder coating machine
model RSC was designed for an even, finely dosable and
dust free powdering of cables, wires, hoses, profiles with
powders such as talc, stearate, lac and swellable powder.
Due to the electrostatic charging of the powder an
even and strongly adhered layer is achieved on the
product surface. The electrostatic charge also ensures
that no powder will fall outside of the dusting chamber.
Depending on extrusion speed and product diameter up
to four powder guns of 100kV each can be used.
Rolf Schlicht can supply machines for product diameters
up to 200mm. Each machine is manufactured to corres-
pond to the desired extrusion speed and diameter.
The machine features a fluidised powder hopper from
which the powder is sucked by pneumatic venturi pumps
and then blown to the guns.
For optimal adjustment of the powder quantity the power
of the electrostatic charge can be varied from 0–100kV.
Depending on the product the powder gun can be
equipped with different powder nozzles. A fine dosing
device is also available.
The machine is fitted with a fully automatic and
maintenance-free filter system that maintains a strong
and constant vacuum in the machine. Inlet and outlet
openings of the dusting chamber do not have to be sealed
by brushes.
A free standing dusting chamber is available for use
where space is limited; this is connected to the machine
by hoses.
Available accessories for the machines include an
automatic 90l powder refilling hopper, a powder flow
indicator with alarm, automatic adjustment of the
electrostatic and pneumatic to comply with the extrusion
speed, and an interface to connect the machine to
the line.
wire Düsseldorf stand: 12A35
Rolf Schlicht GmbH – Germany
Fax: +49 40 67 99 4211
Email:
Website: Model RSC electrostatic powder coating machine ▲ ▲