Product category:
Metals foundry, materials and equipment
News Release from: Norse Precision Castings | Subject: Moulding flexibility for aluminium castings
Edited by the Manufacturingtalk Editorial
Team on 09 June 2004
Rigid polyurethane offers limitless
mould shaping
The fluidity during moulding of rigid polyurethane offers an infinite choice of shape without compromising style or finish.
The fluidity during moulding of rigid polyurethane from Norse Precision Castings offers an infinite choice of shape without compromising style or finish On the aCOLyte by Synbiosis, an instrument used for the bacteriological colony count of laboratory samples, the chic contours mask a complex shape, effortlessly absorbing the ergonomic considerations
This article was originally published on Manufacturingtalk on 18 Sep 2002 at 8.00am (UK)
Related stories
Remember sand casting for one-offs
Aluminium casting techniques at Norse Precision Castings can achieve tolerances of 0.4mm and wall thickness of 3mm, and sizes approaching one metre cube
Metals techniques used for plastics and vice-versa
Similarities of manufacture in gravity sand casting and moulding rigid polyurethane, gives a foundry the versatility to work in plastics and metals.
A smooth recess for the switch, a precision cut-out for the removable specimen plate, and a shallow indentation for the logo are all accommodated without sacrificing style.
Rigid polyurethane will accept a smooth paint finish or as in this case a textured random dapple effect to add a little elegance.
For Alphamatic's spectacle lens cutter, rigid polyurethane is used for the base platform, front moulding and main top cover, each part having close tolerance interfaces and demanding shapes.
Further reading
Sand casting provides economic design variants
Experience in mould design, particularly the feeders and the fluidity of aluminium, enables tolerances of +0.4mm and wall thickness of 3mm to be achieved in aluminium sand castings.
Aluminium foundry expands CNC machining capacity
Leading aluminium sand caster has recently invested in two CNC machining centres to augment an already comprehensive capacity of in-house equipment.
The application in a working environment demands a tough casing.
A minimal footprint with smooth lines was a key consideration in the design of the enclosure for CellMap, Bio-Rad's laser scanning Confocal Imaging System.
It consists of a subtle combination of polyurethane shapes and sand cast aluminium components.
The artistic concept is realised by complex shapes in rigid polyurethane, whilst the aluminium meets the heat dissipation requirements.
Eight components in polyurethane and two sand cast in aluminium were needed and production techniques at Norse Precision Castings, ensured tight tolerances at the interfaces.
Bio-Rad logos, contoured into the polyurethane, blend in well with the two tone paint finish to complete the classic design.
The finish on Drake's Refresh range of voice communication modules uses different colours on the smooth finish for product variants.
Leaders in their field, quality is paramount, style a refinement, Norse Precision Castings of Bedford, responsible for manufacturing the enclosure in rigid polyurethane, input on both.
Polyurethane exhibits a high degree of precision on the recesses, coping well with the intricate hole patterns accommodating lights and push buttons, as well as low tolerance on warp and overall fit.
The "velvet touch" external finish with silk screen printing and internal metallic coating for EMC/RFI screening are used to good visual and functional effect, adding to, rather than restricting the artistic style and performance.
Norse Precision Castings are in the unique position of being able to offer plastic (rigid polyurethane) or metal (sand cast aluminium) without 'fear or favour' bot economic in low batch production.
• Norse Precision Castings: contact details and other news
• Email this article to a colleague
• Register for the free Manufacturingtalk email newsletter
• Manufacturingtalk Home Page
Search the Pro-Talk network of sites
