I am thinking about constructing a 350 ton press, and would like to try extruding some aluminum for grins and giggles. my problem is that I have no experiance in making the extrusion die. I have made many presses, and precision heating furnaces, so that should not be a problem. but in the die lyes some chalenges. the part I want to make is a hallow part, I understand the consepts of extrusion, however lack some specific information. here are some questions that one might be able to answer, I am looking into purcahsing some good books on the subject as well:
- What are the tempratures used to extrude aluminum?
- What are the angles leading to the finish edge?
- Is there typically a "final" flat that is parralel to the surface of the part or other angle just before the part leaves the die?
- When using a forming mandrel for the hollow, what taper is common on the leading edge and the trailing ege?
- On the trailing edge of the mandrel what distance is typicall from the finish edge to allow the parts material to flow together properly?
- What strength or alloy of material are the dies typically made with?
Thank you for this information.