Archive for November, 2017

Turning Round Tensile Bars

November 16, 2017

Tensilathe in operation, turning a stainless steel bar in accordance with ASTM E8.

Turning a Round Tensile Bar

Turning a Round Tensile Bar

The machine is simplified in operation, and completes round tensile bars quickly.

Contact us for more information on making your lab more efficient with the Tensilathe from Tensilkut Engineering.

 

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Cutting Round Monel Tensile Bars

November 6, 2017

Recently, we shipped a CNC Tensilathe to a customer who was cutting, amongst other materials, Monel.  This is a very hard material to cut, but the CNC Tensilathe handled it well.  These are pictures of a shaving from the monel bar, as it was being cut; we cut it in .012″ deep passes, which would equate to approximately 10 passes for an ASTM E8 bar cut from a .750″ diameter starting piece.

The starting end of a shaving from a Monel bar, cut in accordance with ASTM E8 on the CNC Tensilathe

The starting end of a shaving from a Monel bar, cut in accordance with ASTM E8 on the CNC Tensilathe

A shaving from the cutting of a Monel Tensile Bar using the CNC Tensilathe.

A shaving from the cutting of a Monel Tensile Bar using the CNC Tensilathe.

Starting with an irregular bar would require more and shallower cuts, but with Tensilkut’s CNC machines, we program the specimens for your starting size and shape, and you insert the blank into the machine, select the specimen from the drop down menu on the integral computer, and walk away until the cycle is finished, and your specimen is complete.

Contact us for more information on how the CNC Tensilathe can help your testing lab become more efficient.

Complex Round Test Bars

November 1, 2017

In addition to being able to turn perfect shouldered, button head and threaded tensile bars, Tensilkut’s CNC Tensilathe has been used for preparing more complicated, proprietary test specimens.  This one is a fine example:

Tapered stress test bar

Tapered stress test bar

This is a bar designed by a customer for a specific test of longevity of Hastelloy.  Each of the end sections on both ends is tapered, as is the gauge section.  This test specimen is beautiful in its complexity.

Ends of tapered stress test bar

Ends of tapered stress test bar

Of course, because it was turned from Hastelloy, accommodations had to be made in the program; when the program would turn steel or stainless specimens perfectly, the deflection from the Hastelloy caused it to be oversized.  When we program your specimens for the CNC Tensilathe or the CNC Tensilkut III, we want to receive several samples of your actual material, so our programs will accurately prepare your test bars, regardless of its properties.  Machines which accurately prepare physical test specimens are the only things we’ve ever built, and we pride ourselves on offering the best sample preparation equipment available.