An important consideration in heading is the tendency for the wire to buckle if its unsupported length to diameter ratio is too high. This ratio usually is limited to less than 3:1 but with appropriate dies, it can be higher.
There are a variety of cold heading machines but typically for fastener manufacturing you will see one die two blow up to five die six blow and beyond. Multi-die headers allow for more complex parts to be formed as part of one process due to the above limitations of diameter ratio reductions.
Some advantages of cold heading a part over using a CNC lathe or Swiss screw machine include reduced part cost both through production speed (60-400 parts per minute) and the minimal scrap generated from a cold headed part. Also, because the part is formed rather than cut, the grain flow stays intact and creates a much stronger part for its size. [2]
Referencesedit
^, February 2004, archived from the original on 2004-05-04, retrieved 2009-05-24.
^Why Cold Heading, August 2011, retrieved 2014-08-13.
This metalworking article is a stub. You can help Wikipedia by expanding it.
heading, metalworking, heading, metalworking, process, which, incorporates, forging, extruding, upsetting, process, dubious, discuss, often, performed, cold, state, resulting, cold, working, this, process, typically, produces, near, shape, workpiece, which, me. Heading is a metalworking process which incorporates the forging extruding and upsetting process 1 dubious discuss It is often performed in the cold state resulting in cold working This process typically produces a near net shape workpiece which means the final product is almost finished although it can sometimes create the final product less plating or heat treating An important consideration in heading is the tendency for the wire to buckle if its unsupported length to diameter ratio is too high This ratio usually is limited to less than 3 1 but with appropriate dies it can be higher There are a variety of cold heading machines but typically for fastener manufacturing you will see one die two blow up to five die six blow and beyond Multi die headers allow for more complex parts to be formed as part of one process due to the above limitations of diameter ratio reductions Some advantages of cold heading a part over using a CNC lathe or Swiss screw machine include reduced part cost both through production speed 60 400 parts per minute and the minimal scrap generated from a cold headed part Also because the part is formed rather than cut the grain flow stays intact and creates a much stronger part for its size 2 References edit HEADING HINTS ABOUT COLD HEADING February 2004 archived from the original on 2004 05 04 retrieved 2009 05 24 Why Cold Heading August 2011 retrieved 2014 08 13 nbsp This metalworking article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Heading metalworking amp oldid 1049744811, wikipedia, wiki, book, books, library,
