Posts Tagged ‘flat tensile bars’

Demonstration of the Tensilkut II

June 23, 2015

The Tensilkut II is used to easily prepare flat tensile, compression, flexural and other specimens from metals and non-metallics.  This machine is designed for operation in the testing lab by technicians without previous machining experience.

The starting blank is inserted into the Tensilkut Master Template, and the clamping screws are tightened as shown in this video.  The micrometer dial on the Tensilkut control head is set to its starting position, and a series of light passes are taken to cut the material from each side of the specimen.  When the correct tensile specimen dimensions are achieved, the micrometer dial will stop turning, thus preventing cutting an undersized test specimen.  After removing the completed ASTM E8 or other specimen from the master template, the tensile bar is ready for immediate testing.

ASTM D412 Die C Tensile Specimens

May 13, 2015
Tensilkut Master Templates 50-92, 50-93 and 50-94 for preparing rubber test specimens in accordance with ASTM D412 Die C: Available for use on Tensilkut I and Tensilkut II models.

Tensilkut Master Templates 50-92, 50-93 and 50-94 for preparing rubber test specimens in accordance with ASTM D412 Die C: Available for use on Tensilkut I and Tensilkut II models.

50-94 Tensilkut Template for ASTM D412 Die C

50-94 Tensilkut Template for ASTM D412 Die C

50-93 Tensilkut Template

50-93 Template: ASTM D412 Die C

50-92 Template

50-92 Template

ASTM D638 Type III Templates

May 11, 2015
The 50-57 Template for preparing ASTM D638 Type III tensile bars on the 10-20 or 10-40 series Tensilkut I or 10-82 Tensilkut II

The 50-57 Template for preparing ASTM D638 Type III tensile bars on the 10-20 or 10-40 series Tensilkut I or 10-82 Tensilkut II

The family of Tensilkut Master Templates available for preparing tensile bars in accordance with ASTM D638 Type III on all available Tensilkut I and Tensilkut II model machines

The family of Tensilkut Master Templates available for preparing tensile bars in accordance with ASTM D638 Type III on all available Tensilkut I and Tensilkut II model machines

The 50-58 Template for preparing ASTM D638 Type III tensile bars on the 10-30 series or 10-58 Tensilkut I or 10-85 Tensilkut II

The 50-58 Template for preparing ASTM D638 Type III tensile bars on the 10-30 series or 10-58 Tensilkut I or 10-85 Tensilkut II

The 50-59 Template for preparing ASTM D638 Type III tensile bars on the 10-68 or 10-78 Tensilkut I or 10-88 Tensilkut II

The 50-59 Template for preparing ASTM D638 Type III tensile bars on the 10-68 or 10-78 Tensilkut I or 10-88 Tensilkut II

ASTM D638 Type II Templates

May 11, 2015

Tensilkut master templates for preparing tensile bars in accordance with ASTM D638 Type II from plastics and other non-metallic materials are available for all Tensilkut I and Tensilkut II models.

50-51 Template for preparing samples in accordance with ASTM D638 Type II

50-51 Template for preparing samples in accordance with ASTM D638 Type II

Tensilkut Master Templates for cutting ASTM D638 Type II tensile bars can be used with all Tensilkut I and Tensilkut II models

Tensilkut Master Templates for cutting ASTM D638 Type II tensile bars can be used with all Tensilkut I and Tensilkut II models

50-53 Tensilkut Master Template for ASTM D638 Type II plastic tensile bars

50-53 Tensilkut Master Template for ASTM D638 Type II plastic tensile bars

ASTM D638 Type II Master Template for use with 10-68 or 10-78 Tensilkut I or 10-88 Tensilkut II

ASTM D638 Type II Master Template for use with 10-68 or 10-78 Tensilkut I or 10-88 Tensilkut II

Visit http://www.tensilkut.com for ordering information.

Tensilkut Master Templates for Subsized Metal Specimens

May 7, 2015

The 50-30 series Tensilkut Master Templates are used to prepare modified ASTM E8 subsized specimens, with a .250″ x 2″ gauge section.

Tensilkut Master Templates 50-34, 50-36, 50-38

Tensilkut Master Templates 50-34, 50-36, 50-38

50-34 Template for use with 10-20 and 10-40 series Tensilkut I and 10-82 Tensilkut II

50-34 Template for use with 10-20 and 10-40 series Tensilkut I and 10-82 Tensilkut II

50-36 Template for use with Tensilkut I and Tensilkut II

50-36 Template for use with Tensilkut I and Tensilkut II

50-38 Template for use with Tensilkut I and Tensilkut II

50-38 Template for use with Tensilkut I and Tensilkut II

Changing Tensilbits

April 9, 2015

Tensilbits are designed specifically for use with the Tensilkut I and Tensilkut II series machines.  These carbide bits have a precise diameter with cutting edge angles, rakes and reliefs engineered for optimal surface finish on a variety of materials.  Once a dulled cutting edge on a Tensilbit is noted, do not continue cutting your tensile specimens with that Tensilbit; permanent damage to the Tensilbit, including chipping of the edges can occur, making it impossible to resharpen the Tensilbits for extended use.  A dulled edge will also result in a lesser quality surface finish, yielding inaccurate test results.

Before replacing the Tensilbit, be certain that you’ve used all available sections of your carbide Tensilbit by moving it up and down.  This can be accomplished by loosening the bolt which holds the motor secure within its mount, and twisting the motor to move it up and down, allowing new sections of the carbide flutes on your Tensilbit to be used.

10-33 Tensilkut I

Tensilkut I

To install a new Tensilbit, remove the motor from its mound and loosen the collet with the wrenches provided with your Tensilkut machine.  Remove the worn Tensilbit and insert the new one, sliding it far enough into the collet that it is securely held in place.  Be certain that the chuck, chuck nut and Tensilbit are free of dirt and debris to insure trueness of the bit and accurate alighnment of the carbide cutting edges.

Cutting Specimens from Plaques

March 31, 2015

Some customers wish to cut specimens from plaques, using the CNC Tensilkut III, without first cutting the pieces into strips. This unit can be designed to do just that.

The machine is programmed to cut the specimens you need in the layout you desire. All clamps are custom made, and, as shown in this photograph, this plaque will be cut into ASTM D638 Type I specimens, cutting the entire length of each bar.

Plaque to be cut with CNC Tensilkut III

Plaque to be cut with CNC Tensilkut III

Often, a plaque which is to be cut into all tensile bars is sawn into strips using the Tensilsaw before the pieces are clamped into the machine. More commonly, when a customer wishes to cut specimens from a plaque, he wants several types of specimens, including tensile, flexural and impact blanks.

Although this can be done for thin plaques of metal, it is not recommended, as the cutting time is significantly longer, and the cutter wear will be much greater. Using the Tensilshear to cut metal strips to be clamped in the CNC Tensilkut III is much more efficient.

ASTM D638 Samples

October 11, 2013

Samples can be made on any model Tensilkut machine quickly and easily.

Below are white corian ASTM D638 Type I specimen and ASTM D638 Type II specimen, and black phenolic ASTM D638 Type I and ASTM D638 Type II tensile bars.

ASTM D638 Type I and ASTM D638 Type II

ASTM D638 Type I and ASTM D638 Type II Tensile bars


Standard templates for many other test specimens are available.

CNC Tensilkut III Video

September 1, 2010

Because the recent video of the CNC Tensilkut III showed very little of the motion, here is a video in which the cutting head is moving along its X axis.  Note that no cutting is occurring in this clip.  This is a Quicktime video; please download Quicktime if you can’t view it.

Operation of the CNC Tensilkut III

August 25, 2010

While there are plenty of photos of the CNC Tensilkut III, this is the first time we’ve posted video of the operation of the machine. You will have to look closely, because these samples are lined up front to back on the table, so the cutting head is moving only a minor amount on a left/right or up/down basis, and the table is moving forward and backward for cutting the length of the specimen. When the camera pans to the view of the computer screen, the red shapes indicate the uncut specimens, while the blue lines display the sample which has already been prepared.

Because the door cannot be opened while the cutting operation is in progress, we can’t give a closer view of the operation of this machine.