A metalforming process which is displacing stamping in a wide range of applications, especially in the automotive industry. Hydroforming is important to tube-bending, because many parts to be hydroformed start off as tubing which is bent into the approximate shape of the finished part before going into the hydroforming press. Hydroformers call this bending operation “pre-bending”. Pre-bending is rotary-draw tube-bending and does not differ in the fundamentals from any other rotary-draw tube-bending process.
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A complete guide to the principles of the 4-Step set-up for tube-bending tools
This is a printable handbook showing how to implement in four standardized steps the “forward mandrel” set-up for rotary-draw tube-bending machines and establish process control over the so-called black art. The procedure is based upon the guiding principle that the tools make the bend and takes advantage of the inserted design of modern mandrel tooling.