Type VAQR 50A/50 Primary Pug Sealer

Extruder

Auger-shaft speed infinitely variable

1/min 2 - 30 2 - 30

Max. motor capacity kW 2,2 2,2

Max. torque for theentire speed range

Nm 300 500

Designed for

max. pressuremax. axial force

bar

kN

subject to design of auger

5010

15029

Max. volumetricthroughput rate l/h approx. 30

Type VAQR 80A/80 Primary Pug Sealer

Extruder

Auger-shaft speed infinitely variable

1/min 2 - 30 2 - 30

Max. motor capacity kW 3 5,5

Max. torquewith monolithic a ugerwith segment auger Nm

10001000

20001500

Designed for

max. pressuremax. axial force

bar kN

subject to design of auger

5025

15075

Max. volumetricthroughput rate l/h approx. 120

ECT-KEMA have a long history: In 1878 Richard Raupach

founded an engineering company in Görlitz with a

factory producing steam engines; later the focus was

on brick making machines, thus forming the essen-

tial basis for further development in ceramic ma-

chinery and plant engineering.

Up until 1939 Raupach was the largest European

manufacturer of this type of plants also being the

owner of several brick factories.

From 1947 onwards the company operated under

the name of VEB KEMA manufacturing and planning

plants for the fine and technical ceramics industry.

The merger of the production program and the

know-how potential of KEMA GmbH and ECT GmbH

in 2015 enabled the newly formed ECT KEMA GmbH

to substantially expand their range of activities into

new areas of technology. As the European market

leader in extrusion of ceramic bodies for engineering

ceramics and related materials, we are constantly

striving towards optimizing the benefits of our cli-

ents world-wide on the basis of an open partnership.

ECT-KEMA GmbH Holtendorfer Straße 31 D-02829 GirbigsdorfPhone: +49 (0)3581-878 777-0Fax: +49 (0)3581-878 777-77E-Mail: info@ect-kema.deWeb: www.ect-kema.de

Hard Metal The Extrusion

Profilesof

Who we are VAQR 50 VAQR 80

For extrusion of hard metal profiles the de-airing

extrusion unit employed is of the so-called trans-

verse-arrangement type, which enables to vary

the direction of extrusion freely from horizontal

to vertical.

For the production of small profiles, as well as

micro extrusion, a barrel diameter of 50 mm was

selected in view of the degree of deformation to

be expected.

Thanks to the feedback of the motors, the auger-

shaft speeds of the primary pug sealer and of

the extruder can be varied very accurately from

0 – 25 rpm allowing different extrusion modi.

The control system not only facilitates the pre-set-

ting of all operating values on the touchscreen, but

also the tracking and recording of all data, both

online and offline.

A special auger geometry was designed to deal

with extremely stiff hard metal and related materi-

als which, in the case of small section profiles and

high degrees of deformation respectively, results

in reduced flow pressure rates and torques. As an

option the axial pressure as well as the pressure

build-up over the entire auger length can be de-

tected, in addition to the flow pressure at the die.

For processing abrasive and/or corrosive bodies all

materials coming into contact with the body are

suitably optimized. In such cases, augers made of

ceramic, hard metal and special plastic materials

can be used, besides different stainless and hard-

ened steels, provided with PTA, HVOF, CVD or PVD

coatings. Other possible options are the selective

tempering of the augers, the barrel sections, as

well as the machine bodies. Also available are

special sealing systems between the primary pug

sealer and the extruder suitable for those materi-

als which demand a constant and high degree of

de-airing for extrusion.

If the dies and/or the strainer plates need to be

changed frequently, hydraulic screen changer

systems can be offered.

Continuous extrusion of hard me-tal profiles with auger extruders

De-airing extrusion unit VAQRS 50

for 45 angle degree extrusion

Extrusion of hard metal profilesHydraulic screen or die changer

The Technology

Dosing

Kneading

Straining

Extruding

The process technology

Weighing and proportioning

of powder and liquid raw

materials and additives

Intermittent mixing, kneading

and plasticizing of the body

Storage of the kneaded batch,

homogenizing and continuous

dosing of extrusion plant

Continuous de-airing

followed by shaping of the

plastic body forming profiles

of different geometry