Powder Compaction Systems

We design and supply

- complete, turn-key compaction plants
based on hydraulic as well as mechanical processes
- peripheral equipment for powder compaction
- we modify and upgrade our customers existing presses
to new standards of compaction efficieny

The system comprises

- povvder feed systern
- tooling
- automatic tool lubrication system
- magnetic aligning circuits (parallel and transverse to press direction)
- part removal and cleaning systems

It tolerates oxygen and moisture and bad rheological properties of the fine milled powder.Our standard systems have been used for compaction plants with pressing forces from 60 to 1400kN.

Process Development

We make technical and economic evaluations, feasibility studies of processes and experimental tests to help our customers to improve and optimize their production lines.
Our scientific know - how and deep technical experience enables to control novel complex processes.
Finite element calculations software development a pilot plant for hydrogen treatments are some of the methods we use.

Hydrogen Decrepitation

The HD plant has been designed for premilling ingot mat riall without mechanical forces when manufacturing permanent magnets from alloy based on the intermetallic compound Nd2Fe14B.
These alloys react strongly vvith hydrogen to form hydrides, In the coarse of such a reaction the ingot material, normaly input as large lumps, embrittles and decrepitates to a powder with grains of less than 1 mm. The advantage of the powder in comparison with mechanically premilled powder is an increased capacity in the subsequent fine milling step, milling rates 3 - 4 times faster are typical.

The plant consists of

- vacuum vessel
- vacuum pumping unit
- rotation drive unit with magnetic coupling
- gas supply system for H2, N2, Ar
- full safety interlock system for gas handling
- resistance heating elements
- recirculation gas cooling
- PLC process controller

The HD plant is operated fully automatically. Operating lemperatures upto 600 C are standard.The integrated heating system allows partial degassing after the hydrogenation step.
During the process the drum containing the material rotates, yielding optimum homogeneity of the powder and short total process cycle times.The standard size of the plants has been designed for a batch size of 200 kg. Higher loads or variation on specification are available for development and negotiation.

Experience
Our capabilities in engineering, designing and building highly sophisticated plants are based on the high technical and scientific standard of our company and on more than 25 years of experience in Powder Metallurgy: Physics, Research, Development Engineering and Production Management.
Major R. F. magnet manufacturers, world wide, rely on our experience and use NKE products.

Flexibility
We know that maximum flexibility is invariably needed by our customers in tailor-made solutions for their individual problems. Consequentiy, we take into account all customer specific aspects as soon as we start to work on a project.

Our service comprises:
Engineering & Consulting
Technical and Economic Evalutions
Project Planning
Installation Management
Equipment & Turn-Key Projects
After Sales Service
Development

NKE is engaged, directly in developing new and more efficient production technologies, using the latest scientific sources, analyses and technique process studies of our customers. In co - operation with European Universitie and companies we find solutions for tomorrows' questions.

Innovation
We use advanced technologies for our work, such as modern software applications or lay out of magnetic circuits by means of Finite calculation.
The application of hydrogen treatment techniques and novel high - speed compaction are major activities of our company.