Metal extrusions and roll forming
Download
1 / 34

Metal Extrusions and Roll Forming - PowerPoint PPT Presentation


  • 118 Views
  • Uploaded on

Metal Extrusions and Roll Forming. Chapters 3.1 and 3.11. http://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusion. http://www.aec.org/techinfo/expro.html. http://www.aec.org/techinfo/expro.html. Videos. Pacific Bearing introduction to Extrusion:.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Metal Extrusions and Roll Forming' - zelenia-phelps


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Metal extrusions and roll forming

Metal ExtrusionsandRoll Forming

Chapters 3.1 and 3.11


http://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusionhttp://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusion


http://www.aec.org/techinfo/expro.htmlhttp://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusion


http://www.aec.org/techinfo/expro.htmlhttp://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusion


Videos
Videoshttp://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusion

Pacific Bearing introduction to Extrusion:

http://www.youtube.com/watch?v=iiGlq7408ME&feature=player_embedded#

Impact Extrusion:

http://www.youtube.com/watch?v=9mQ2ic-kDlk&feature=related

Spanish Extrusion Company:

http://www.youtube.com/watch?v=9HpV483vJq8&feature=related


www.aluminumextrusions.com/ extrusions/http://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusion


http://www.engineersedge.com/extrusion.htmhttp://www.world-aluminium.org/About+Aluminium/Production/Processing/Extrusion


http://www.alexandriaextrusion.com/media/pdf/technical_guides/6_4.pdfhttp://www.alexandriaextrusion.com/media/pdf/technical_guides/6_4.pdf


http://www.aec.org/techinfo/dies.htmlhttp://www.alexandriaextrusion.com/media/pdf/technical_guides/6_4.pdf


It is also possible to produce hollow sections using extrusion. In this case, the die contains a short piece (or mandrel) in the shape of the hole. This mandrel is attached to the die by one or more ‘bridges’. As the extruded material encounters the bridges it is forced to separate, but it flows around the bridges and joins up again, much the same as water flowing around the piers of a bridge. Figure 30 shows such a ‘bridge die’. This works successfully even for processing of solid metals.

Figure 30:

http://openlearn.open.ac.uk/mod/resource/view.php?id=198368


http://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpghttp://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpg

http://www.aluminiumdesign.net/die-design.html


Brallahttp://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpg


Roll forming

Roll Forminghttp://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpg


http://www.custompartnet.com/wu/sheet-metal-forminghttp://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpg


http://www.iai.dk/Default.asp?ID=120http://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpg


Videos1
Videoshttp://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpg

Steel Forming Systems overview of their Roll Forming process

http://www.youtube.com/watch?v=44XD5mZoM_0&feature=related

Quick Animation:

http://www.youtube.com/watch?v=ik2FfI_vEUE&NR=1

SME description of bow twist, etc

http://www.youtube.com/watch?v=xGLHjyPdDBI&NR=1


www.roll-forming.com/ simply.htmhttp://img.directindustry.com/images_di/photo-g/profile-extrusion-die-163472.jpg


http://www.bikudo.com/product_search/details/46545/roll_forming_machine.htmlhttp://www.bikudo.com/product_search/details/46545/roll_forming_machine.html


Material straightnesshttp://www.bikudo.com/product_search/details/46545/roll_forming_machine.html

is another tolerance consideration. Factors that establish material straightness include camber, curve or sweep, bow, and twist. The terms camber, curve, and bow are many times interchanged when describing material straightness, but they actually have slightly different meanings. A formed part's horizontal and vertical planes are determined by their position in the roll forming process.

Material straightness terms include:

Camber Camber is the variation of a side edge from a straight line. Extreme camber contributes to curve, bow, and/or twist in the finished part.

Curve or SweepCurve or sweep is the variation from a straight line in the horizontal plane measured after the part has been roll formed. Causes of curve or sweep included incorrect horizontal roll alignment and uneven forming pressure.

Bow Bow is the variation from a straight line in the vertical plane. It can be either cross bow or longitudinal bow. Bow is often caused by the existence of irregular vertical spaces on symmetrical sections and from uneven forming areas on unsymmetrical sections. [could use an illustration here!]

Twist A formed part is said to have twist when it resembles a corkscrew effect. This is often caused by excessive forming pressure in the final formed part. For most roll forming operations, twist is typically less than 5° in 10 feet of formed parts.

http://www.corrugated-metals.com/rollforming3.html#tolerance


www.commercialroll.com/crf/roll_forming.htmhttp://www.bikudo.com/product_search/details/46545/roll_forming_machine.html


ad