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用不含任何合金元素的商业用纯铝生产的材料,在1000小时内于500℃下完全软化退火,并缓慢冷却后,当断裂强度为33公斤/公厘~2和布氏硬度为90°时,仍具有30公斤/公厘~2的屈服極限。也许以为这种材料有些奇特。那么,现在就讨论一下由烧结铝粉制成的材料吧。它的优良性能的先决条件是尽可能采用细致的和无脂的铝粉。此粉系按已知方法中的一种制成。这样的粉末是由细致的片状或鳞片状的微粒组成。所制成的烧结铝粉的厚度在一公忽以下,不过,这两类粉末根据每一种制造方法的不同,其尺寸大小各异,一般在一百公忽以
Materials produced from commercially pure aluminum free from any alloying elements were fully softened and annealed at 500 ° C for 1000 hours and slowly cooled. When the breaking strength was 33 kg / mm² and the Brinell hardness was 90 ° , Still has a yield limit of 30 kg / mm ~ 2. Maybe think this kind of material is a bit strange. Well, let’s talk about the material made of sintered aluminum powder now. A prerequisite for its excellent performance is to use as fine and non-fat aluminum powder as possible. The powder is made according to one of the known methods. Such a powder is composed of fine flake or flake particles. The thickness of the sintered aluminum powder produced is below 1 Kg, however, these two types of powder vary in size according to each method of manufacture,