A key to a perfect extrusion process lies in proper extrusion tools. For a perfect extrusion operation Toolmakers, extrusion press manufacturers and the companies that put these machines to work should share an understanding for desired results. Some of the parameters on which extrusion equipment are to be evaluated are as under.

“Getting it right since beginning saves time, checks interruptions and leading ultimately to savings of money.”

• Tools to meet exactly with the drawings
• Tools suited to long, medium or short production runs
• Minimal production disruptions
• Fewer tool failures
• Minimal wear and tear of extrusion press components

Selecting the Right Extrusion Equipment
Selecting the most appropriate tool for an extrusion job goes a long way towards its success. In fact for the extrusion equipment, working conditions are also taken into consideration. Some of the considerations for the appropriate extrusion equipment includes:

• Position of the component in relation to the hot billet and the extruded profile that emerges out.
• The pressure applied on the metal being extruded.
• Pressure and temperature to which the equipment are subjected to.
• Resistance to thermal fatigue cracking.
• Good compressive strength especially for dummy blocks.
• Good bending strength when temperatures are high especially for dies and mandrels.
• Heightened hot yield strength and hot hardness in case of shear blades.
• High creep strength in case of dummy blocks.
• Excellent temper resistance and resistance to softening at raised temperatures.

Test for Extrusion Equipment A die is exposed to the most severe working conditions. Along with it liner, dummy block and the mandrel are other parts to experience high temperatures. Typical temperatures experienced by these components are: Aluminium extrusion: 400°–500°C Copper and copper Alloys: 600°–1100°C Stainless steel: 1100°–1250° C

Types of Extrusion Equipment
Components of the extruder hardware can be divided in to the following systems as described in this image.



Some of the major extrusion tools as part of the above extruder hardware system is described here.

• Extruder
• Extruder Screw
• Extrusion Dies
• Extrusion Press
• Feed Systems
• Extruder Barrel
• Extruder Screens