Conveyors feed the work to the saw. Cutting Typically, a finish cut saw is used to cut the profile to the specified commercial length. Circular saws are the most common in use today and are generally similar to a radial arm saw that cuts across the profile at a perpendicular angle to the length of the extrusion. Larger saws are used for larger-diameter presses. Lubricated saws are equipped with delivery systems that feed the lubricant through the teeth of the saw for optimal efficiency and cut surface.
Automatic devices clamp profiles in place for sawing.
Saw chips are collected for later recycling. Aging Some extrusion alloys reach their optimal strength through the process of aging, sometimes known as age-hardening. Natural aging occurs at room temperature. Artificial aging takes place through controlled heating in an aging oven and is sometimes referred to as precipitation heat-treating . Either way, the aging process ensures the uniform precipitation of fine particles through the metal, yielding maximum strength, hardness, and elasticity for the specific extrusion alloy.