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- We understand some aluminum extruded hollows are not truly seamless. How can we be sure the extrusions we use for bending will not crack? The aluminum extruded hollow can be seamless
through a pierce-mandrel method or can be metallurgically welded through
the bridge-porthole process. The seamless is preferred for severe bending
applications, but in most of the smooth radius end-uses the non-seamless
metallurgical controlled alloy temper bonded product will work. As
a rule, as long as you are not seeking to utilize the tube for internal
flow where burst pressure becomes a concern, the truly seamless is
not required. Also as a rule of thumb, bend radius of twice the metallurgical
welded hollow will work. Tooling, product price and availability are
considerably less. Typical applications are furniture posts, truck
mirrors -- handles, greenhouses, and archways in commercial architectural
buildings.
- What is the best way to center-punch my extrusions without leaving surrounding dents? One of the best ways to facilitate punching
and drilling is to utilize a built-in indexing mark. The shallow extruded
groove provides an easy and economical way to locating proper drilling
locations. Additionally, the index can be used to identify an inside
versus an outside surface or identify pieces that have a similar appearance.
- What is the minimum bending radius for an aluminum extrusion? Extruded aluminum tube, pipe and shapes
can be formed on conventional bending equipment. The minimum bending
radius of a specific extrusion will depend on its size, alloy and temper,
the complexity of its shape, and the characteristics of the available
equipment.
- What's the best way to join the extruded aluminum parts of our product to the other parts that are non-aluminum? Aluminum extrusions can be joined to other
aluminum parts or to different materials by all major methods, including:
welding, bolts, soldering, brazing, rivets, clips, adhesives, clinching,
and slide-on, snap-together or interlocking joints. Ask your Shapemaker
extruder which method would be best for your application.
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