 |
 |
||||||
[December 2000]
BPB speeds modelling time with new material
BPB Formula has come up with a new material - called 'Molda Formax' - which is a machinable composite for use in the production of patterns and moulds. The product can be machined directly using CNC machining techniques and can be used in industries such as ceramics, foundry, automotive and aerospace. Among the advantages claimed for the product are bespoke castings, limited wastage, no dust generation, excellent machining properties, low tool wear, excellent surface finish and first-class results.
BPB says that comprehensive independent evaluation has confirmed the product's many beneficial characteristics, including safety, versatility, speed, precision, quality and cost efficiency.
Molda Formax can be readily cast using conventional mixing techniques. In standard test methods, plaster to water ration was 3.33:1 by weight and initial Vicat setting time at the stated ratio was 30 minutes. The plaster should be hard enough to demould after one hour. The blocks are then placed in a dryer at a temperature of 40oC until completely dry, i.e. dried to a constant weight. When dry, the blocks can be machined to the desired shape.
The product is said to then be stable in shape and form, no cutting lubricants are required, it demonstrates good dimensional accuracy, no dust formation and is environmentally friendly.
Andrew Briggs of the Hothouse Centre for Design remarked: "I believe the new material represents a real opportunity for the ceramic industry to improve lead times on new product development, both in terms of speed through improved cutting times and the ability to integrate the material into the existing familiar range of modelling and tooling materials without any new process requirements or product handling".
Web site: http://www.bpbformula.com/
ENDS