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JD Squared, Inc. is an American manufacturer of tube and pipe benders.Founded in 1982 and based in Johnson City, Tennessee, the company has manufactured fabrication tools since 1982, starting with tube and pipe benders and later expanding to other fabrication tools.
End notching works the end of the tube, such as a semicircular concavity to make the base of a tee, or a convex vee to fit into a mitre. Vee-notched tube, bent for assembly of a mitred joint. Side notching (also called offset notching) works the side of a tube with a vee notch for bending, semicircular or vee notches for tee joint.
Flow forming is an incremental metal-forming technique in which a disk or tube of metal is formed over a mandrel by one or more rollers using tremendous pressure. The roller deforms the workpiece, forcing it against the mandrel, both axially lengthening and radially thinning it. [ 1 ]
The type of notch introduced to a specimen depends on the material and characterization employed. For standardized testing of fracture toughness by the Charpy impact method, specimen and notch dimensions are most often taken from American standard ASTM E23, or British standard BS EN ISO 148-1:2009.
This is an accepted version of this page This is the latest accepted revision, reviewed on 31 December 2024. Manufacturing processes This section does not cite any sources.
Tube- and pipe-forming dies—a first operation bends the edges of the sheet to make the piece roll up. Then a die similar to a curling die causes the tube to be formed. Larger tubes are formed over a mandrel. Four-way die blocks—A single die block may have a V machined into each of four sides for ease of changeover of small jobs.
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