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r?n?ha?t] 華氏溫度Quenched [kwent?d] 淬火的Aged 時效Clamp 夾具Profile 型材Circumscribing circle diameter 外接圓直徑 AgingSome 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 heattreating.When the profile emerges from the press it is in a semisolid state, but rapidly solidifies as it cools or is quenched (whether by air or water). Nonheattreatable aluminum alloys (such as those utilizing manganese or magnesium) derive their strength through natural aging and cold working. Heattreatable alloys (such as those utilizing copper, zinc, and magnesium with silicon) are further strengthened or hardened through controlled thermal treatments that affect the metallurgical structure of the alloys.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.注釋:Age hardening 時效強化Natural aging 自然時效Artificial aging 人工時效Precipitation [pri?sipi?tei??n] heattreating 沉淀熱處理Nonheattreatable aluminum alloys 不可熱處理鋁合金Metallurgical 冶金的 PackagingAfter sufficient aging, whether in an aging oven or at room temperature, the profiles are moved to other areas of the plant for finishing or fabricating, or to be packed and prepared for shipment to the customer.Most extrusion plants are equipped to acmodate any likely packaging requirement. Profiles are palletized in such a way as to be protected from surface damage, twisting, or other hazards. Customers may specify their own packaging requirements, or the type of extruded product may suggest a particular method of packaging for ease of storage or delivery.注釋:Packing 包裝Fabricating 加工Palletized [′p230。F (500176。F (375176。 Fahrenheit (660176。ndril] 心軸、模芯Piercing mandrel 穿孔針A semihollow die extrudes a shape that is nearly hollow, partially enclosing a void, the area of which (the area of the die tongue) is large in parison with the gap where the tongue is connected to the main body of the die.While a solid or semihollow die is a single piece, it requires support from additional tools called backers and bolsters. Depending on the plexity of the extruded shape, the total cost of the extrusion tooling may include charges for these supplemental tools.. 5 A semihollow die also produces shapes without enclosed voids。 the best bination of product performance, quality and cost is achieved when the product designer, the die maker, the extruder, and the purchaser recognize each other’s requirements and work together.A typical extrusion operation will make use of a die assembly, including the die itself, which, together with a backer, is enclosed within a die ring, placed in