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    热处理是模具钢重要的工艺工程

    来源:https://www.jnqhmj.com/ 日期:2022-08-27 发布人:guanli


    热处理是山东模具钢重要的工艺工程,这种工艺一般不改变工件的整体形状,是改善工件的内在质量,提高模具钢的工件的力学性能、物理性能和化学性能,模具钢热处理技术要求也是比较高,那么具体的工艺过程如何呢?
    Heat treatment is an important process engineering of Shandong die steel. This process generally does not change the overall shape of the workpiece. It is to improve the internal quality of the workpiece and improve the mechanical, physical and chemical properties of the workpiece of die steel. The technical requirements for heat treatment of die steel are also relatively high. What about the specific process?
    热处理工艺一般包括加热、保温、冷却三个过程,有时只有加热和冷却两个过程。这些过程互相衔接,不可间断。
    The heat treatment process generally includes three processes of heating, insulation and cooling, and sometimes only two processes are heating and cooling. These processes are interconnected and cannot be interrupted.
    加热是热处理的重要工序之一。金属热处理的加热方法很多,早是采用木炭和煤作为热源,近而应用液体和气体燃料。电的应用使加热易于控制,且无环境污染。利用这些热源可以直接加热,也可以通过熔融的盐或金属,以至浮动粒子进行间接加热。
    Heating is one of the important processes of heat treatment. There are many heating methods for metal heat treatment. In the early days, charcoal and coal were used as heat sources, and liquid and gas fuels were recently used. The application of electricity makes heating easy to control and no environmental pollution. These heat sources can be used for direct heating or indirect heating by molten salt or metal or even floating particles.
    金属加热时,工件暴露在空气中,常常发生氧化、脱碳(即钢铁零件表面碳含量降低),这对于热处理后零件的表面性能有很不利的影响。因而金属通常应在可控气氛或保护气氛中、熔融盐中和真空中加热,也可用涂料或包装方法进行保护加热。
    When the metal is heated, the workpiece is exposed to the air, and oxidation and decarburization often occur (that is, the carbon content on the surface of steel parts is reduced), which has a very adverse effect on the surface performance of the parts after heat treatment. Therefore, the metal should usually be heated in a controlled atmosphere or protective atmosphere, molten salt and vacuum, and can also be protected by coating or packaging.
    加热温度是热处理工艺的重要工艺参数之一,选择和控制加热温度,是保证热处理质量的主要问题。加热温度随被处理的金属材料和热处理的目的不同而异,但一般都是加热到相变温度以上,以获得高温组织。
    Heating temperature is one of the important process parameters of heat treatment process. Selecting and controlling heating temperature is the main problem to ensure the quality of heat treatment. The heating temperature varies with the metal material to be treated and the purpose of heat treatment, but it is generally heated to above the phase transformation temperature to obtain a high-temperature structure.
    山东模具钢
    另外转变需要一定的时间,因此当金属工件表面达到要求的加热温度时,还须在此温度保持一定时间,使内外温度一致,使显微组织转变完全,这段时间称为保温时间。采用高能密度加热和表面热处理时,加热速度快,一般就没有保温时间,而化学热处理的保温时间往往较长。
    In addition, the transformation takes a certain time. Therefore, when the surface of the metal workpiece reaches the required heating temperature, it must be kept at this temperature for a certain time to make the internal and external temperatures consistent and complete the transformation of the microstructure. This period of time is called the holding time. When high-energy density heating and surface heat treatment are adopted, the heating speed is fast, and generally there is no holding time, while the holding time of chemical heat treatment is often long.
    冷却也是热处理工艺过程中不可缺少的步骤,冷却方法因工艺不同而不同,主要是控制冷却速度。一般退火的冷却速度慢,正火的冷却速度较快,淬火的冷却速度更快。但还因钢种不同而有不同的要求,例如空硬钢就可以用正火一样的冷却速度进行淬硬。
    Cooling is also an indispensable step in the heat treatment process. The cooling method varies with different processes, mainly by controlling the cooling speed. Generally, the cooling speed of annealing is slow, the cooling speed of normalizing is faster, and the cooling speed of quenching is faster. However, there are different requirements due to different steel types. For example, air hardened steel can be quenched at the same cooling rate as normalizing.
    综上所述,模具钢一般是加热、保温、冷却这三个过程,热处理是模具钢重要的工序之一,能大幅度的提高模具钢的各项指标和性能,以上就是关于模具钢的工艺过程内容,相信大家已有所了解,更多相关内容可关注我们网站https://www.jnqhmj.com咨询!
    To sum up, die steel generally consists of three processes: heating, heat preservation and cooling. Heat treatment is one of the important processes of die steel, which can greatly improve the various indicators and properties of die steel. The above is the content of the process of die steel. I believe you have already understood it. For more related content, please follow our website https://www.jnqhmj.com consulting service

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