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Aluminum alloy is a general term of aluminum-based alloy. Aluminum alloy has low density but high strength which is close to or higher than the quality steel, it has good plasticity and easy processing, and can be processed into various profiles. Due to its excellent electric conductivity, thermal conductivity and corrosion resistance, after adding different alloying elements, it can produce casting aluminum alloy with good casting property or wrought aluminum alloy with good processing plasticity.
對(duì)特殊鋼尚無(wú)統(tǒng)一的定義和概念,異型材 擠出管材生產(chǎn)線,一般認(rèn)為特殊鋼異型材指具有特殊異型材化學(xué)成分(合金化)、采用特殊異型材工藝生產(chǎn)、具備特殊異型材組織和性能、能夠滿足特殊需要的鋼類.與普通鋼相比,異型材,異型材 pvc管材押出機(jī),特殊鋼具有更高的強(qiáng)度和韌性、物理性能、化學(xué)性能、生物相容性和工藝性能.
我國(guó)與日本、歐盟對(duì)特殊鋼的定義比較接近,將特殊鋼分成優(yōu)質(zhì)碳素鋼、合金鋼、高合金鋼(合金元素大于10%)三大類,其中合金鋼和高合金鋼占特殊鋼產(chǎn)量的70%.主要鋼種優(yōu)特殊碳素結(jié)構(gòu)鋼、碳素工具鋼、碳素彈簧鋼、合金彈簧鋼、合金結(jié)構(gòu)鋼、滾珠軸承鋼、合金工具鋼、高合金工具鋼、高速工具鋼、不銹鋼、耐熱鋼,以及高溫合金、精密合金、電熱合金等.目前世界上有近2000個(gè)特殊鋼牌號(hào)、約50000個(gè)品種規(guī)格.特殊鋼除了種類繁多之外,在規(guī)格上異型材表現(xiàn)出與普通鋼不同的特點(diǎn).除了板、管、絲、帶、棒和異型材之外,異型材 重金屬對(duì)現(xiàn)代人異型材影響,還有復(fù)合材、表面合金化材、表面處理材、精鍛材、精密鑄件、粉末冶金制品等.
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