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            當前位置:首頁>新聞中心>新聞動態>對高溫下工作酌模具鋼材料的性能要求

            對高溫下工作酌模具鋼材料的性能要求

            來源:http://www.pyzhcc.com/ 日期:2021-06-25 發布人:admin


            對高溫下工作酌模具鋼材料的性能要求
            Performance requirements of die steel for high temperature operation
            具有良好的耐熱性
            It has good heat resistance
            耐熱性是指模具鋼金屬材料在高溫下抵抗介質腐蝕與機械負荷同時作用的能力高溫下工作就木易發生破壞,它包括熱穩定性和熱強性兩個方面。
            Heat resistance refers to the ability of die steel metal materials to resist medium corrosion and mechanical load at the same time at high temperature. Wood is easy to be damaged when working at high temperature. It includes thermal stability and thermal strength.
            濟南模具鋼
            1)熱穩定性
            1) Thermal stability
            熱穩定性是指金屬材料在高溫下抵抗氧化和燃氣腐蝕的能力。金屬在高溫下常見的腐蝕破壞是氣體腐蝕,其中以氧化為常見,故熱穩定性通常是指金屬抵抗氧化的能力。熱穩定性高的材料,在高溫下使用時就不易產生劇烈的氧化而導致損壞。
            Thermal stability refers to the ability of metal materials to resist oxidation and gas corrosion at high temperature. The common corrosion damage of metals at high temperature is gas corrosion, among which oxidation is the most common, so thermal stability usually refers to the ability of metals to resist oxidation. Materials with high thermal stability are not easy to be damaged due to severe oxidation when used at high temperature.
            2)熱強性
            2) Thermal strength
            熱強性是指金屬材料在高溫下抵抗塑性變形和破壞的能力,亦稱金屬高溫強度或稱熱強度。試驗表明,隨著溫度升高,金屬材料一般是強度降低而塑性增加(見圖61)。
            Thermal strength refers to the ability of metal materials to resist plastic deformation and failure at high temperature, also known as metal high temperature strength or thermal strength. The test shows that with the increase of temperature, the strength of metal materials generally decreases and the plasticity increases (see Figure 61).
            例如30CrMnSlA鋼,常溫強度ob=1100MPa,在550度時,ob只有550MPa。另外,在高溫下,隨著加載時間的延長,金屬的強度還要進一步下降。因此,金屬材料在高溫下的力學性能,除了考慮載荷因素外,還要考慮溫度和時間因素的影響,從而建立高溫強度指標。常用的高溫強度指標有高溫瞬時強度、蠕變強度和長久強度等。
            For example, 30crmnsla steel, the room temperature strength ob = 1100mpa, at 550 degrees, ob is only 550MPa. In addition, at high temperature, with the extension of loading time, the strength of the metal will further decline. Therefore, the mechanical properties of metal materials at high temperature should not only consider the load factor, but also consider the influence of temperature and time factors, so as to establish the high temperature strength index. The commonly used high temperature strength indexes include instantaneous strength, creep strength and long-term strength.

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