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            塑料模具鋼的發展形成了剛體系

            來源:http://www.environmentandpeople.net/ 日期:2021-03-08 發布人:admin


            我國過去無專用的塑料模具鋼,一般塑料模具用正火的45和40Cr經調質后制造,因而模具硬度低、耐磨性差,表面粗糙度值高,加工出來的塑料產品外觀質量較差,而且模具使用壽命低;精密塑料模具及硬度高塑料模具采用CrWMo、Cr12MoV等合金工具鋼制造,不僅機械加工性能差,而且難以加工復雜的型腔,更無法解決熱處理變形問題。由此,國內對專用塑料模具用鋼進行了研制,并獲得了一定的進展。
            In the past, there was no special plastic mold steel in China. Generally, the plastic mold was made of normalized 45 and 40Cr after quenching and tempering, so the hardness of the mold was low, the wear resistance was poor, the surface roughness value was high, the appearance quality of the processed plastic products was poor, and the service life of the mold was low. The precision plastic mold and the high hardness plastic mold were made of crwmo, Cr12MoV and other alloy tool steel, which not only made by mechanical machining It is difficult to process complex cavity and solve the problem of heat treatment deformation. Therefore, special steel for plastic mould has been developed in China, and some progress has been made.
            我國已有了自己的專用模具鋼系列,目前已納入標準的有兩種,即3Cr2Mo和3Cr2MnNiMo,納入行業標準的已有20多種,已在生產中推廣應用十多種新型塑料模具鋼,初步形成了我國塑料模具用鋼體系。
            China has its own series of special die steel. At present, there are two kinds of plastic die steel, 3Cr2Mo and 3cr2mnnimo, which have been included in the industry standard. More than 20 kinds of new plastic die steel have been popularized and applied in production, and China's plastic die steel system has initially formed.
            塑料模具鋼的具有以下特點
            Plastic mold steel has the following characteristics
            1. 塑料模具用鋼涵蓋廣泛,從普通鋼材到專用鋼才都有。這在塑料模具初期更加明顯,如今已日趨正規和高級。專門用鋼已自成體系,模具用鋼的化學成分和合金工具鋼的基本相同,但其冶金質量更高,加工精良,對熱處理有利。
            1. Plastic mould steel covers a wide range, from ordinary steel to special steel. This is more obvious in the early days of plastic mold, and now it has become more and more formal and advanced. The chemical composition of die steel is basically the same as that of alloy tool steel, but it has higher metallurgical quality and better processing, which is beneficial to heat treatment.
            2. 塑料模具鋼性能要求嚴格,熱處理難度大。
            2. The performance requirements of plastic mold steel are strict, and the heat treatment is difficult.
            3. 為避免模具零件在強韌化過程中的變形或其他熱處理問題,模具鋼以預硬化形式供應市場已較普遍。
            3. In order to avoid the deformation or other heat treatment problems of die parts in the process of strengthening and toughening, it is common for die steel to be supplied to the market in the form of pre hardening.
            4. 以石化產品為原料的塑料制品,某些度不同的腐蝕性,所以耐蝕鋼應用也較多。
            4. Plastic products with petrochemical products as raw materials have different degrees of corrosion, so corrosion-resistant steel is widely used.
            5. 配合預硬化鋼、非調質剛的應用,易切削性也是塑料模具鋼的特點.
            5. With the application of pre hardened steel and non quenched and tempered steel, free cutting is also the characteristic of plastic mold steel

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