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Squeeze casting and squeeze forming
Science, Maths & Technology

Squeeze casting and squeeze forming

...systems not usually required, giving high metal yields and weight tolerances of ±2%. Solidification times less than other casting processes except high pressure die casting and “Hyperforge” process. Accurate control of all process variables makes process difficult to operate under production conditions and often leads to slow cycle times. Typical production rates are...
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Article 5 mins
Soldering
Science, Maths & Technology

Soldering

...systems Electrical resistance: medium cost and output, poor versatility, preforms required Radio-frequency induction: high cost and output, preforms required Dipping bath: medium cost, low output and versatility Soldering iron: hand-feeding gives low cost and output, but high versatility Finishing – flux and residual solder are removed before inspection. Materials:...
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Article 10 mins
Injected metal assembly (Liquid riveting)
Science, Maths & Technology

Injected metal assembly (Liquid riveting)

...systems are more expensive and less versatile, since they are usually only economic for the high volume production of one particular assembly. The dies and tooling in an operating head can be changed in a few minutes, and complete operating heads for the production of entirely different assemblies can be fitted in approximately 10 min. The holding fixture for the...
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Article 10 mins
The Bottom Line Expert Opinion: The Northern Powerhouse
Money & Business

The Bottom Line Expert Opinion: The Northern Powerhouse

...system, publicly backed schemes to improve worker retention in the North and the creation of a National Investment Bank. Geraint Johnes looks at these alternatives in his article “Northern Powerhouse: Cruel Deception or Cool Conception?” This article was written to accompany the Autumn 2015 series of The Bottom Line. For more information on the series, visit the...
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Article 5 mins
Electrochemical Grinding (ECG)
Science, Maths & Technology

Electrochemical Grinding (ECG)

...system and the boiling point of electrolyte. Removal rates are 5–10 times those of conventional grinding for hard materials; typically 0.15 cm3 min–1 (100 A)–1. Main use of process is the shaping and sharpening of WC cutting tools, although it has been used for sharpening hypodermic needles and machining thin, fragile, honeycombed structures. Materials: Almost any...
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Article 5 mins
Crafting a new international partnership for racial equity in Higher Education
Education & Development

Crafting a new international partnership for racial equity in Higher Education

...systems and aiming to carve out a new path that is Africa-centred, decolonised and yet globally connected. On the one hand, Makerere had emerged as the leading university in the region based on foundations that were questionable on grounds of, not least, low recognition of local culture and knowledge. On the other hand, Makerere needed and needs to secure its leadership...
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Video 10 mins
Culture can be brutal, just ask Milton Keynes
Society, Politics & Law

Culture can be brutal, just ask Milton Keynes

...system then breaks with it in the late 1990s to expedite commercial value extraction by building smaller, cheaper roads to much denser housing. Beneath all of this is one brutal truth – there is no clear water between the profane business of economy and the sacred activity of culture – and the town knows it. Nothing illustrates that better than the story of the Milton...
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Video 25 mins
Tubman: The Moses of Her People
History & The Arts

Tubman: The Moses of Her People

...system. Tubman herself was in touch with the abolitionist leaders, and made public appearances at abolitionist rallies, despite her need for anonymity.However, the Underground Railroad was to challenge slavery in a more profound way, as what one might call a "propaganda device". In the 1840s and 1850s, the issue of fugitive slaves and the Railroad had a high public...
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Article 10 mins