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Powder metallurgy industry and technical sintered parts

Since 1982, the company Polis Precis is involved in the manufacturing of tools for the Powder metallurgy industry.  

We produce powder compacting tools, injection molds type: MIM (Metal Injection Moulding) and CIM (Ceramic injection moulding) and extrusion dies.

From the 3D drawings of the piece before or after sintering, we are able to bring our advices and to produce a complete powder press tool with polishing and fitting of all the active parts. We take care also about the repairs, we can resize and cut the tools again

Products and realizations

Powder compacting tools

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carbide powder press tools, ceramic powder press tools, steel powder, magnet powder, diamond powder press tools, other powder press tools

Uniaxial powder compacting tools

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Compacting die, punch, core rode, helical groove press die, pressing dies

Multi Axial Compaction Tools / Side Compaction / Splitted Die

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Production of Multi axial compaction tools of complex geometries by cross hole, closed die, opened die and splitted die, upper and lower punches filler plates.

Adiabatic powder compaction tools

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The introduction of reference clamping systems for pressing metal and ceramic powders saves assembly time and prevents tool breakage during assembly. It is therefore an economical solution. We have the possibility to manufacture the pressing tools with optional reference clamping systems (Progrit, System 3R, Erowa, …).               We invested in a punch alignment system for vertical compaction that can handle any type of positioning pallet (Erowa, 3R, Progrit).

Injection moulds

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CIM injection moulds / MIM injection moulds, moulds cavities, overmoulding parts.

Extrusion tools

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Extrusion dies, extrusion nozzles, extrusions tools which can be used for the manufacturing of carbide rods as sintered with straight coolant holes, the blank rods without cooling holes, the square profiles …

Die-forging tools, Calibration tools

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Calibration tools to set tolerances before sintering

Compression tools for rotary presses

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While the pharmaceutical industry is the largest customer for our rotary compression tools, we have developed a range of high-speed rotary compression tools specifically for a number of applications including powder metallurgy, ceramics, nuclear fuel, catalysts, ferrites, electronics, automotive, detergents and food.

Rotary press tooling for industrial applications

Tools for pharmaceutical tablet presses

Tools with special coatings for the pharmaceutical industry

Carbide filling table

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wearing part that allows the filling of the die. We produce tables with active carbide parts where the filler shoe passes to prevent long term wear.

Consulting & Engineering for the powder industry :

Polis Précis provides customer-specific developments, concepts and solutions for:

  • Powder compacting tools with reference clamping systems for single and multi-level applications
  • Co axial compaction – splitted punch
  • Multi axial compaction – cross hole, closed, open and splitted die
  • Compaction with multi cavities
  • Design and standardization of compaction tools and filler plates
  • Development of manufacturing concept for the tool shop
  • Palletization technology for positioning of existing compaction tools and position correction of new produced compaction tools

Following our customers’ requests, we also produce some filler plates with carbide inserts or ceramics insert in order to avoid the wear.

Regarding the geometries of the final pieces, the multi axial compaction system is sometime superior to the MIM and CIM manufacturing process in terms of quickness and accuracy and can replace the MIM and CIM process.

 

Properties of carbides

the pressed powders are generally highly abrasive, carbide is the basic material for the manufacture of powder compression tools. We work in partnership with the European manufacturers of carbide.

We have chosen the most suitable grades for this area among all the manufacturers. The grades are corrosion resistant, wear resistant, high toughness and of course resistant to compression. No porosity is accepted.

3D part machining

For few years, the additive manufacturing technologies have strongly developed. We offer a 3D printed parts machining service.
Machining on parts printed in additive manufacturing :

  • Grinding of sintered and 3D printed parts

  • Milling of sintered and 3D printed parts

Carbide and ceramic machining :

  • Grinding of ceramic and carbide

  • 5-axis carbide milling

  • 5-axis ceramic milling

  • EDM: Electrical discharge machining: Wire-erosion and Electrical Discharge Die-sinking

Carbide properties

  • Wear-resistant

  • High compressive strength

  • Corrosion-resistant

  • High fracture toughness (good edge stability)

  • Well suited for coating and removal of the coating

  • High transverse rupture strength

Scope of application

Carbide manufacturers, ceramic manufacturers, Powder and powder-metallurgical materials

Sectors

  • Automotive and aerospace construction: sintered pieces manufacturers

  • Construction and furniture industry

  • Electric and electronic industry: manufacturers of electrical – electronic components

  • Pharmaceutical industry: manufacturer of ceramic parts such as teeth, manufacturer of medical tablets.

  • Grinding material industry

  • Tool and die production: Machining by material removal: manufacture of cutting inserts: turning inserts, milling inserts, cut-off inserts, inserts for bar turning, special cutting inserts developed in partnership with our customers.

 

Machining technologies 

  • Electrical Discharge wire-erosion in water bath
  • Electrical Discharge Wire Erosion in oil bath
  • Electrical Discharge Die-sinking
  • High-Speed Electrical Discharge Drilling
  • HSM milling: high speed Milling: 3 and 5 axes + 80 positions loading Robot
  • High-Precision Jig Grinding
  • Cylindrical Grinding
  • Flat Grinding
  • CNC Turning
  • Brazing (steel/carbide, steel/ceramic)
  • Shrinking (steel/carbide, steel/ceramic, steel/steel)
  • Sticking
  • Laser marking
  • Measuring control
  • Milling of electrode in Sparkal® or copper or cupro-tunsgten
  • Hard milling of carbide
  • Hard milling of ceramic
  • Technical polishing without deformation

Services 

  • Complex mechanical parts from customers’ drawings: prototypes, single parts and small series from 1 to 80 parts per month.

  • Repeatability and constancy of dimensional and geometric characteristics.

  • Advice: choice of carbide, choice of ceramic, coating, analysis of breakages and wear

  • Engineering: development of compression tools from the 3D file of the part before and after sintering.

  • Machining of sintered parts and machining of 3D printed parts.

  • Conception, machining and assembly of complex mechanical tools.

    • Hard materials milling : carbide high speed milling, ceramic high speed milling, tungsten high speed milling,

      Advice / Engineering  3D printed pieces machining

    • Repair of powder pressing tools
    • reface of the shapes of the compression tools
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