TECH TIP - Changing Cutting Bit Position for Best Results

Optimize the burr conditions on the tube squaring operations. How the tool bit is mounted can shift the .005" burr from the ID to the OD (or the OD to the ID). The balance between the ID and the OD burr conditions (even though they are small) can be shifted by changing the shear cutting angle of the tool bit. 

TECH TIP - End Preparation Squareness

Tri Tool Inc. designs all standard ID mounting weld end preparation products to machine the end square to the mounting surface within .002" per diameter inch and flat within .005". Tri Tool does not test and certify each tool to meet the criteria, but the initial production lot is verified to meet the criteria and random samples are tested thereafter. A squareness factor of .002" per diameter inch is equivalent to about 1/8" of one degree. If a customer requires a certification of squareness and flatness then Tri Tool will test a machine at time of sale and provide the certification at a nominal fee.

Preparing Tube Ends for High-Purity Welding

by William Sandford

Autogenous welding (fusion welding without the use of filler metal) joins the tubing used for most high-purity and sanitary tubing systems.

These systems require very high-quality weld joints, with emphasis placed on obtaining a smooth inside surface to avoid contaminant traps and on all the normal structural requirements for welded joints.

Automatic Tube Welding for High Purity Systems

by Bill Atkinson

 

Background

Over the years, the equipment used for welding, testing, and certifying welds has become more complex. This is evident in the use of computers by welders for the study, design, and control of welding processes. Technology has provided us with an intimate understanding of the metallurgical processes of metal joining. In many industries, one way to help obtain repeatable and reliable high-integrity welds is to use machinery specifically designed to generate accurately machined tube and pipe ends.