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            當前位置:首頁>新聞中心>新聞動態>模具鋼中耐熱鋼和耐熱合金的分類

            模具鋼中耐熱鋼和耐熱合金的分類

            來源:http://www.environmentandpeople.net/ 日期:2021-03-16 發布人:admin


            1)珠光體或鐵素體一珠光體耐熱鋼。這類鋼一般在正火高溫回火后使用,其組織屬于鐵素體l碳化物的亞共析鋼,其合金元素總含量一般不超過5%。由于這類鋼的抗氧化合金元素含量不高,故工作溫度范圍為350—620℃,常用作鍋爐、氣輪機中工作的耐熱零件。
            1) Pearlite or ferrite pearlite heat resistant steel. This kind of steel is usually used after normalizing and high temperature tempering. Its structure belongs to hypoeutectoid steel with ferrite and carbide, and its total alloy element content is generally less than 5%. Because of the low content of anti-oxidation alloy elements in this kind of steel, the working temperature range is 350-620 ℃, which is often used as heat-resistant parts in boilers and gas turbines.
            2)馬氏體耐熱鋼。這類鋼一般經過淬火一高溫回火后使用,這類鋼中一部分是在lcr13馬氏體不銹鋼基礎上發展起來的,使用狀態是回火馬氏體,主要用作氣輪機葉片;另一部分以馬氏體耐熱鋼為閥門鋼,使用狀態是回火索氏體o
            2) Martensitic heat resistant steel. This kind of steel is generally used after quenching and high temperature tempering. One part of this kind of steel is developed on the basis of lcr13 martensitic stainless steel, and its service state is tempered martensite, which is mainly used for gas turbine blades; the other part takes martensitic heat-resistant steel as valve steel, and its service state is tempered sorbite o
            山東模具鋼
            3)鐵素體耐熱鋼。屬于抗氧化鋼,系高鉻鋼加入硅、鋁等元素形成的鋼。
            3) Ferrite heat resistant steel. It belongs to oxidation resistant steel, which is formed by adding silicon, aluminum and other elements into high chromium steel.
            4)奧氏體耐熱鋼。它是在奧氏體不銹鋼的基礎上發展起來的,可以在600~810℃范圍使用,作為抗氧化用鋼可工作到1200℃左右。根據其強化方法的不同又分成固溶強化的簡單奧氏體耐熱鋼、用碳化物沉淀硬化的奧氏體鋼、用金屬問化合物沉淀硬化的奧氏體鋼等。奧氏體耐熱鋼可用作燃氣渦輪、航空發動機、工業爐耐熱構件等高溫材料。
            4) Heat resistant austenitic steel. It is developed on the basis of austenitic stainless steel and can be used in the range of 600 ~ 810 ℃. As an anti-oxidation steel, it can work up to 1200 ℃. According to the different strengthening methods, it can be divided into simple austenitic heat-resistant steel with solid solution strengthening, austenitic steel with carbide precipitation hardening, austenitic steel with intermetallic compound precipitation hardening, etc. Austenitic heat-resistant steel can be used as high-temperature materials for gas turbine, aeroengine, industrial furnace and other heat-resistant components.
            按性能和用途,模具鋼中耐熱鋼可分成三大類:
            According to properties and uses, heat resistant steel can be divided into three categories
            1)抗氧化鋼。應具有高溫抗氣體腐蝕(主要是抗氧化)能力。
            1) Oxidation resistant steel. It shall have high temperature resistance to gas corrosion (mainly oxidation resistance).
            2)熱強鋼。應具有良好的熱穩定性和一定的高溫強度。
            2) Hot strength steel. It should have good thermal stability and high temperature strength.
            3)氣閥鋼。是動力設備大量使用的鋼,它應具有上述西方面的高溫性能。
            3) Valve steel. It is a kind of steel widely used in power equipment. It should have the high temperature performance mentioned above.
            耐熱合金按基體元素,一般分為鐵基、鎳基、銷基等耐熱合金;按生產工藝,可分為變形耐熱合金和鑄造耐熱合金兩大類。變形耐熱合金按其高溫性能、成型特點,又可分為熱穩定變形耐熱合金和熱強變形耐熱合金兩種類型。
            According to the matrix elements, heat-resistant alloys are generally divided into iron-based, nickel based, pin based and other heat-resistant alloys; according to the production process, they can be divided into deformation heat-resistant alloys and cast heat-resistant alloys. According to their high temperature properties and forming characteristics, wrought heat-resistant alloys can be divided into two types: heat stable wrought heat-resistant alloys and heat strength wrought heat-resistant alloys.

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