Tharsus Engineering – Sheet Metal Fabrication
Tuesday 8 September 2009
Tharsus Engineering is a contract sheet metal fabricator in the UK. They are a sub division of the main Tharsus group. They are based in Tyne and Wear which is located in the north of England. They also have three other sub divisions: CQI, Vision and Direct. The Engineering division provides the following services:
- Design & Development
- Prototyping
- Manufacturing
- Low Cost Sourcing
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Metal Fabricator's Handbook (Paperback)
Wednesday 8 July 2009
Fuel and oil tanks, Exhaust headers, Roll bars and roll cages, Sheet metal interiors and Basic metal shaping.
This practical book shows how to build structurally sound, good looking metal parts for custom street rods, race cars or restorations. Over 350 step-by-step photos and instructions illustrate proper welding, metal shaping and design techniques.
"For the reader with more than a passing interest in automotive fabrication, this book is an excellent acquisition." -Road & Track
Buy Now
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Bending Formulas / Definitions
Monday 22 June 2009
Bend Allowance = Angle * (PI / 180) * (Radius + K-factor * Thickness)
Bend Compensation = Bend Allowance – (2 * Set Back)
Inside Set Back = tan (Angle / 2) * Radius
Outside Set Back = tan (Angle / 2) * (Radius + Thickness)
Bend Allowance – The length of the arc through the bend area at the neutral axis.
Bend Angle – The included angle of the arc formed by the bending operation.
Bend Compensation – The amount by which the material is stretched or compressed by the bending operation. All stretch or compression is assumed to occur in the bend area.
Bend Lines – The straight lines on the inside and outside surfaces of the material where the flange boundary meets the bend area.
Inside Bend Radius – The radius of the arc on the inside surface of the bend area.
K-factor – Defines the location of the neutral axis. It is measured as the distance from the inside of the material to the neutral axis divided by the material thickness.
Mold Lines – For bends of less than 180 degrees, the mold lines are the straight lines where the surfaces of the flange bounding the bend area intersect. This occurs on both the inside and outside surfaces of the bend.
Neutral Axis – Looking at the cross section of the bend, the neutral axis is the theoretical location at which the material is neither compressed nor stretched.
Set Back - For bends of less than 180 degrees, the set back is the distance from the bend lines to the mold line.
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Tharsus Engineering to exhibit at Defence Industry Exhibition
Friday 12 June 2009
Tharsus Engineering will be exhibiting at the Defence Equipment and Systems International (DSEi) 2009 event to be held in London in September.
DSEi is the largest fully integrated defence exhibition in the world and features the full capability of the international defence and security industry at a single exhibition.
Tharsus, first time exhibitors at this event will be promoting their specialist CQI fabrication division at Blyth which supplies customers with products which are produced in a Controlled environment using production processes and systems of known capability by fully Qualified personnel. The scheduling and line-side delivery of product is then configured to Integrate with customers’ processes and systems.
Tharsus will be exhibiting alongside other Northern Defence Industries (NDI) member companies at the four day event to be held at the ExCeL Centre in London’s Docklands.
Anyone interested in visiting the event to view over 1,350 exhibitors, please contact fran.jonas@tharsus.co.uk, to be added to Tharsus’ Exhibitor Guest list, which entitles you to free pre-registration and fast track event entry.
For more exhibition information visit www.dsei.co.uk
For more information on Tharsus’ CQI division visit www.tharsus.co.uk/engineeringCQI
Visit the Tharsus Engineering website for more information on sheet metal fabrication.
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Labels: defence, engineering, tharsus
Sheet Metal Fabrication Video
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Engineers Revolutionize Nano-device Fabrication
Friday 24 April 2009
Yale engineers have created a process that may revolutionize the manufacture of nano-devices from computer memory to biomedical sensors by exploiting a novel type of metal. The material can be molded like plastics to create features at the nano-scale and yet is more durable and stronger than silicon or steel.
The search for a cost-effective and manageable process for higher-density computer chip production at the nano-scale has been a challenge. One solution is making nano-scale devices by simple stamping or molding, like the method used for fabricating CDs or DVDs. This however requires stamps or master molds with nano-scale features. While silicon-based molds produce relatively fine detail, they are not very durable. Metals are stronger, but the grain size of their internal structure does not allow nano-scale details to be imprinted on their surfaces.
Unlike most metals, “amorphous metals” known as bulk metallic glasses (BMGs) do not form crystal structures when they are cooled rapidly after heating. Although they seem solid, they are more like a very slow-flowing liquid that has no structure beyond the atomic level — making them ideal for molding fine details, said senior author Jan Schroers of the Yale School of Engineering & Applied Science.
Researchers have been exploring the use of BMGs for about a decade, according to Schroers. “We have finally been able to harness their unusual properties to transform both the process of making molds and producing imprints,” he said. “This process has the potential to replace several lithographic steps in the production of computer chips.”
Schroers says BMGs have the pliability of plastics at moderately elevated temperatures, but they are stronger and more resilient than steel or metals at normal working temperatures.
“We now can make template molds that are far more reliable and lasting than ones made of silicon and are not limited in their detail by the grain size that most metals impose,” said Schroers.
To actually get detail at the nano-scale the researchers had to overcome an issue faced in any molding process — how to get the material to cover the finest detail, and then how to separate the material intact from the mold. Surfaces of liquid metals exhibit high surface tension and capillary effects that can interfere in the molding.
Postdoctoral fellow Golden Kumar found that by altering the mold-BMG combination they could create surfaces so that the atoms take advantage of their favorable interaction with the mold— to both fill the mold and then release the product.
In this paper, Schroers’ team reports nano-patterning of details as small as 13 nanometers— about one ten-thousandth the thickness of a human hair — and the scientists expect that even finer detail will be possible since the BMGs are only limited by the size of a single atom.
While ‘plastics!’ was the catchword of the 1960’s, Schroers says, “We think ‘BMGs!’ will be the buzz-word for the coming decade.”
Hong Tang, assistant professor of mechanical engineering and electrical engineering at Yale was also an author of the paper. Funding for this research was from the National Science Foundation.
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Labels: amorphous, fabrication, metal, nano
Learn how to layout a cone in sheet metal
Tuesday 21 April 2009
Here is a great tutorial from Sheet Metal World. The article explains how to layout a cone in sheet metal. It is a brief tutorial but with the diagram it is very easy to follow. Below is the full tutorial:
Learn how to layout a cone and the formula, these numbers can be replaced with your dimensions.
The formula for the cone is...
- First you must find the difference between the large and the small Dia.
- Multiply the large dia. by the vertical height,
- Divide this product by the difference first obtained large dia and small dia)
Large Dia - Small Dia = 20" - 8" = 12"
Vertical height X Large Dia. 22" x 20"= 440
440 divided by the product of the difference in dia.
440 / 12 = 36.66 and this 36.66 is the length
Original Article
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Labels: cone, metal, sheet, tutorial