In this process, a separating/sealing membrane (master bag) is fixed within the pressure vessel. The powder is poured into the mold externally, then inserted into the pressure vessel with/onto the bottom. The isostatic pressure of the pressure fluid (hydraulic oil) is then applied to the outer surface of the mold via the built-in sealing membrane (master bag), compressing the powder into a solid part with a homogeneous microstructure.
Dry bag technology is ideal for mass production of parts.
The advantages of an isostatic dry die press:
Fully automatable
Reduced cycle times due to simultaneous filling / pressing / demolding / cleaning
Uniform strength and density
Homogeneous microstructure
Uniform shrinkage
High dimensional accuracy
Reduced finishing
Low mold cost
Wide variety of materials
Very high compacting pressures
Ideal for series and mass production
Modular system of process individual stations (basic version with later expansion / Expansion option available)
- Modular system consisting of individual process stations:
- Basic version – press station with hydraulic system, automatic controls, mold turntable with manual filling and demolding station
- Full version with fully automatic filling/demolding/cleaning and mold exchange station
- Press pressures up to 250 MPa (2,500 bar) in quick-release closure – threaded design (> 250 MPa as yoke version)
- Pressure vessel inner diameter: from 100 mm to over 600 mm
- Pressure vessel working lengths: from 300mm to over 2,000mm
- Variable press parameters for pressure build-up speed / pressure dwell time / decompression / holding or switching stages
- Selection of different high-pressure generators (high pressure multipliers / high pressure triplex plunger pumps / high pressure axial piston pumps
- Freely programmable high pressure decompression valve (servo-controlled) enables precise and variable decompression levels or decompression control via single-stroke pressure intensifier
- Storage of product-specific pressing parameter recipes
- Easy operation via plain text instructions
- Clear process displays
ISOSTATIC LABORATORY PRESSES – as wet and dry bag presses
Cutting-edge technology in a small format
LOOMIS PRODUCTS isostatic laboratory presses are the ideal solution for process/material testing and the production of smaller series.
Custom sizes available
Variable press parameters for pressure build-up speed / pressure holding time / decompression / holding or switching stages
Lifting and closing mechanism for the upper closure
Automatic de-airing valve
Fast pre-filling and emptying of the pressure vessel via high-volume pilot operated check valve
Adjustable high pressure decompression valve enables gentle and variable decompression
Selection of different high-pressure generators (air-driven high-pressure pump / hydraulic pressure intensifier
Easy operation via plain text instructions
Clear process displays
