the Products

Cellimpact today offers a standard range of five(5) High Velocity Impact Units with impact energy from about 100J to 15,000J. The newest development, the HVI-U 1000M, generating about 150,000J, is now erected and being evaluated in our test centre.

Thanks to the high-speed, the resulting kinetic energy is transferred into the material faster than it can dissipate. The higher energy that is transferred into the material by a piston accelerating towards a tool, the higher is the temperature concentration in a narrow shearing zone. Hence, impact/impulse of extreme pressure is generating clean shears within a fraction of a second. High velocity impacting above 10 m/s is often referred to as adiabatic softening. The main benefits are less work hardening, reduced temperature related stresses and fractures and high-quality in terms of decreased burr height and rollover, less force needed and higher shearing ratio.

With total impact cycles of 0.10 to 0.30 seconds per cycle and piston velocity of up to 15m/s at impact, this technology provides new opportunities for a wide area of applications.

(The today available standard High Velocity Impact Units 10C to 100M)

The High Velocity Impact Unit can be used for different purposes. The basic HVI-U is however the same compact and proven hydraulic unit that is only further equipped in a modular way to meet new demands such as including the cutting module to create a system ready to be used in a cutting application.

The HVI-U has been running in, for example, cutting applications for now closer to 100,000,000 impacts. The HVI-U can also be tailored to meet new demands or to be optimized for integration in new applications.

Using the HVI-U for embossing can mean everything from integrating it into a smaller system using only frame, anvil and basic control all the way to a complete high-volume line production. Apart from the possibility of decreasing investment costs, lowering the energy consumption and increasing the productivity, the HVI-U facilitates tight tolerances, more precise patterns and more flat-sheet post forming.

The HVI-U can not only be used for traditional embossing, but the HVI-U can also be used to create coining type of patterns. In some applications this can replace manufacturing methods like etching and milling. In such cases a change to HVI technology can have a revolutionary impact to the production cost.

In cutting or cutoff applications clients do not only benefit from the durability and productivity, but also increased cutting speed and, often more importantly, the increased quality of the cutting surface. Today also the environmental aspect is important. The HVI cutting is not only free of chips, waste material, but also free of coolants. Just clean cuts!

The benefits in blanking and piercing applications are similar to the cutting. This means a client can obtain a fast and clean punch in various materials.

Solid and powder material compaction is a wide area of applications. Cellimpact has experience in metal, but also graphite and in particular expanded graphite forming. Where, in the latter, density figures close to the theoretic maximum have been achieved after forming.

HVI-U-C 125C

HVI-U 125C (test setup)

Cutoff line

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HVI-U 20C