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What is Formdrill?
Thermal drilling is a process that uses friction to produce bushings in metal tubing and flat stock.
The combined rotational and downward force of our special Thermal Drilling tool bit creates frictional heat. Temperatures can reach 900 C for the tool, and 700 C for the work piece.
The material is transformed into a "super-plastic" state, allowing the tool to displace material and form a bushing. The height of the bushing is roughly 3 to 4 times the original metal thickness.
These bushings are ideal for threaded applications, as the number and strength of threads is significantly increased. It is an excellent alternative to weld nuts or threaded inserts. The bushing can also be used as a support hole for welded, soldered or brazed connections as well as for a load-bearing surface.
The Thermal Drilling System can be used in most ferrous and non-ferrous metals including mild steel, stainless steel, copper, brass and aluminium, with material thickness up to 12 mm. In general, all malleable materials can be thermal drilled. Standard drills are available in any size up to 25.4 mm. diameter. Larger drill sizes are available on request.
No special equipment is required. A standard drill press, milling machine or CNC machining center is suitable. Thermal Drilling is also ideal for automation because it is a chipless process, produces accurate holes, and has a long tool life.
Thermal Drilling is also well suited for short run or prototype work because of its ease of use.
There is absolutely no cutting involved during the creation of the hole.
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Flowdrill tools are molded and shaped from very high strength tungsten carbide. The forming part of the tool has a polygonal shape with four facets. These facets produce the friction while turning at high speeds to heat and form the material. Flowdrills are designed with an almost flat conical tip that transitions into a sharper conical shape that leads into the cylindrical shape. The conical and cylindrical portions of the tool are polygon shaped. The cylindrical part of the tool determines the diameter of the hole.
Several styles and sizes are available to suit your Flowdrilling needs. Sizes and styles can also be customized.
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Flow punch forming with centerdrill is a process in which high-strength bushes or eyelets are produced in thin-walled metals using a simple operation without cutting. Instead, friction and feed pressure are used to heat and form the material.
The flow punch forming process may be used everywhere, where threads, bushings, soldering connections or through-holes are to be produced in thin-walled metals materials (e.g. steel plates, non-ferrous metals or high-alloy steels).
Flow punch forming can be used with virtually all thin-walled metals.
The standard versions include the centerdrill short and long models. They differ only in the length of the cylindrical part; the angle of the conical part is identical. When using these versions the material displaced against the direction of feed remains on the surface of the workpart and forms a collar.
Both models are also available in the flat version, with cutters ground into the belt that remove the collar in the same operation, resulting in a smooth surface.
For further details and more information, please visit our website.
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The flowdrill process is based on a combination
of thrust force and rotation speed. It allows to form
bushing into thin walled metallic materials.
All metals which can be soldered, ferrous or non
ferrous, can also be flowdrilled. Parts with a protecting
coat like chromium platimg, etc., are non suitable for
the flowdrilling.
In order to precisely control the process (thrust and
speed) it is recommended to work with the machining
unit BEA25CNC, for less demanding applications the
unit BEM20. For thread cutting or forming the tapping
unit GEM20.
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