Tuesday, 24 July 2018

Incredible new invention! - Stainless Steel - to revolutionise cutlery as we know it!

According to Consul John M. Savage, who is stationed at Sheffield, England, a firm in that city has introduced a stainless steel, which is claimed to be non-rusting, unstainable, and untarishable. This steel is said to be especially adaptable for table cutlery, as the original polish is maintained after use, even when brought in contact with the most acid foods, and it requires only ordinary washing to cleanse.

“It is claimed;”
writes Mr. Savage in the Commerce Reports, “that this steel retains a keen edge much like that of the best double-sheer steel, and, as the properties claimed are inherent in the steel and not dues to any treatment, knives can readily be sharpened on a ‘steel’ or by using the ordinary cleaning machine or knife board. It is expected it will be a great boon, especially to large users of cutlery, such as hotels, steamships, and restaurants.

“The price of this steel is about 26 cents a pound for ordinary sizes, which is about double the price of the usual steel for the same purpose. It also costs more to work up, so that the initial cost or articles made from this new discovery, it is estimated, will be about double the present cost; but it is considered that the saving of labor to the customer will more than cover the total cost of the cutlery in the first twelve month.’

Image: The announcement, as it appeared in the 1915 New York Times, of the development of stainless steel in Sheffield, England.

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Friday, 13 July 2018

Can 3D Stainless Steel printing reinvent the bicycle?

With over a century of experience, Reynolds has seen the shifting demand for customizable bicycles for road, touring, and mountain expeditions. Avid riders wanting to construct a personalized bicycle would commonly go to frame builders with purchased groupsets – an organized collection of mechanical bicycle parts – for bicycle assembly.

However, with the capabilities of 3D printing stainless steel and titanium, frame builders can create unique components and bicycle frames with shortened production processes. These customized components,  that would otherwise be commercially unavailable, can be built to improve a cyclist’s riding experience.

Using metal 3D printing, Reynolds’ streamlined production process enables frame parts with cleaner edges and tighter tolerances. This removes the metering process for tubes on the bicycle – a time-consuming process for a frame builder.

Reynolds has also identified an increasing demand for production-run, semi-custom steel framesets. This is where its new range of parts will flourish within 3D production as there will no longer be a need for costly manufacturing processes involving file and emery cloth working on lugs and manual hacksawing.

3D printing also enables the production of far more intricate shapes than is possible with casting or forging. This allows the construction of internal pockets, which reduces the bicycle frame weight and holds internal cables.

Less time and money spent on traditional processes can then be translated into an aesthetically-pleasing, affordable, and high-performing bicycle.

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Friday, 29 June 2018

The weird and wonderful Stainless Steel World Fair landmark

The Atomium, a concoction of nine stainless steel spheres, connected by interlocking tubes, is one of the symbols of the modern Europe. Sixty years after it was constructed for the Expo58 World’s Fair, it still lights up the Brussels landscape in unmistakable fashion (and dispenses widescreen views of the Belgian capital from its 335ft/102m-high top-floor restaurant).

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Monday, 25 June 2018

The story of France’s first tidal power station with Stainless Steel blades

In 1966, the first tidal power station with stainless steel turbine blades was completed in France.  The Rance Tidal Power Station is a tidal power station located on the estuary of the Rance River in Brittany, France. 

In order to be able to construct the structure across the estuary, two dams had to be built to block the Rance river during the first two years of the construction phase to ensure that the estuary was completely drained. The reason that the Rance River estuary was chosen was due to its large tidal range; it actually has highest tidal range in France. It has an average tidal range of 8m between low and high tide, while the spring and neap range can be as big as 13.5m.

Its 24 turbines reach peak output at 240 megawatts (MW) and average 57 MW, a capacity factor of approximately 24%.

Salt water causes corrosion in metal parts. It can be difficult to maintain tidal stream generators due to their size and depth in the water. The use of corrosion-resistant materials such as stainless steel, greatly reduces, or eliminates, corrosion damage.

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Pic:A stamp showing Range Tidal Power Station

Tuesday, 12 June 2018

“Shrieks and giggles are what we aim for” - the new Stainless Steel slide!

Design studio Splinterworks has created a sculptural waterslide that is designed to mimic the barrel-shape of a wave before it breaks.

Called Waha, the waterslide takes its name from a term given by surfers to describe the hollow portion of a wave that appears like tube or barrel.

"The elegant design was inspired by surfing a waha – the shape appears to gather momentum and reaches a crescendo, which then circles back in on itself," said Splinterworks.

Intended as an add-on to existing swimming pools, the Waha is the company's first standardised water slide.

It is made from sheets of stainless steel that have been hammered into shape and welded together to form a tubular form. To create a contrast, the designers used a mirror-polished finish on the interior while the exterior is brushed.

"Polished stainless steel doesn't get too hot to touch, even in sunny climates," the UK-based designers explained. "In fact, it actually reflects sunlight and thermal energy as it doesn't oxidise like other metals."

Made from a single streamlined curve shape, the foot of the curve constitutes the steps that take the user to the top of the slide. The slide itself then loosens and turns in on itself.

The Waha slide is available in a range of sizes and finishes, including mirrored, brushed or enamelled in colour. There is also an option to have water jets inserted into the inner surface of the slide.

"We wanted to make a something fun and beautiful; that is just as appealing to kids as it is to grown-ups, and if that is for different reasons we are happy with that too!" said the designers.

"Having made static design objects for 10 years, it is now really fun to create objects that are dynamic, that you can physically move through and that are capable of sparking emotions and feelings," they continued. "Shrieks and giggles are what we aim for!"

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Tuesday, 29 May 2018

Did knights wear stainless steel chainmail running shoes?

Review taken from https://gearjunkie.com/chainmail-running-shoes

Until I glanced down at the mesh shoes on my feet I’d never before thought much about chainmail beyond renaissance festivals or Shark Week on the Discovery Channel. Yet the metal cloth was now swishing against the ground on my feet thanks to the work of Gost, a German company that takes minimalist running in a very weird direction. The shoes, called the PaleoBarefoots, go for a cool $250 a pair. They are made in Germany, constructed of thousands of tiny, interlinked stainless-steel rings.

Holy chrome-moly is right. But Gost claims its medieval shoes can improve barefoot-style running and biomechanics because chainmail gives a “tactile sensation of the ground.” Like it did for knights, the material also protects from sharp objects. This includes daggers and swords, though trail runners more often might find the Gost footwear protecting from rocks and sharp sticks.

I pulled on a pair for a few minutes last month while visiting a shoe designer in Boulder. He’d picked up the PaleoBarefoots for his company’s research and development purposes, not necessarily for running in foot armor through the woods.

My first observation? A swishing noise of metal as I moved brought to mind a Monty Python movie. Then upon walking a few steps the texture of the chainmail felt abrasive on my foot. The metal fabric neither flexed nor felt soft as I trotted around. A company tag line is “remember sensation,” which is hard not to do while your feet are being squeezed and raked by thousands of tiny metal rings.

My verdict? With so much excellent minimal-oriented running footwear on the market there is really no room for questionable designs. The Gost concept, while unique, takes the idea of minimalist running too far. The middle ages can have their shoes back.

By Sean McCoy

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Friday, 25 May 2018

How to use tiny Stainless Steel spikes to kill bacteria…

Researchers at the Georgia Institute of Technology in the US have used an electrochemical etching process to create a bacteria killing nanotextured surface on a stainless steel alloy. 

The initial goal of the research – which is reported in the journal ACS Biomaterials Science & Engineering – was to create a super-hydrophobic surface on stainless steel, but it soon became clear that creating such a surface would require the use of a chemical coating, which the researchers didn’t want to do. The group decided to explore the use of a nanotextured surface on stainless steel to control bacterial adhesion.

The team experimented with varying levels of voltage and current flow in a standard electrochemical process which they used to roughen the surface of the steel at the nanometre scale.

During laboratory tests the group found that the surface modification killed Gram negative and Gram positive bacteria, testing it on Escherichia coli and Staphylococcus aureus. Closer examination of the material showed protrusions 20 to 25 nanometres above the surface, and while the specific mechanism by which the material kills bacteria requires further study, the researchers believe tiny spikes and other nano-protrusions created on the surface puncture bacterial membranes to kill the bugs. Because the process appears to rely on a biophysical rather than chemical process, it’s thought that bacteria won’t be able to develop a resistance to it.

Intriguingly, the surface structures don’t appear to have a similar effect on mammalian cells, which are an order of magnitude larger than the bacteria. This suggests that the process could offer a solution to microbial contamination on implantable medical devices and on food processing equipment.

As well as its the anti-bacterial effects, the nano-texturing also appears to improve corrosion resistance.

“This surface treatment has potentially broad-ranging implications because stainless steel is so widely used and so many of the applications could benefit,” said Julie Champion, an associate professor in Georgia Tech’s School of Chemical and Biomolecular Engineering. “A lot of the antimicrobial approaches currently being used add some sort of surface film, which can wear off. Because we are actually modifying the steel itself, that should be a permanent change to the material.”

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