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            當前位置:首頁>新聞中心>新聞動態>我們常用的模具鋼使用硬度的范圍是多少?

            我們常用的模具鋼使用硬度的范圍是多少?

            來源:http://www.environmentandpeople.net/ 日期:2020-11-24 發布人:admin


            模具鋼的硬度是模具鋼的主要技術指標,模具在高應力的作用下欲保持其形狀尺寸不變,必須具有足夠高的硬度。在高溫狀態下工作的熱作模具,要求保持其組織和性能的穩定,從而保持足夠高的硬度,模具鋼在通過一定的熱處理后,會改變其自身的硬度。接下來山東模具鋼給大家分享一下常用的模具鋼使用硬度的范圍。
            The hardness of die steel is the main technical index of die steel. In order to keep its shape and size unchanged under high stress, the die must have enough hardness. The hot working die working at high temperature is required to maintain the stability of its structure and properties, so as to maintain enough high hardness. After a certain amount of heat treatment, die steel will change its own hardness. Next, Shandong die steel to share with you the common use of die steel hardness range.
            除了模具鋼本身質量不過關之外,模具鋼的熱處理硬度不夠或者是過硬,都會使其使用壽命大大地減少。
            In addition to the quality of die steel itself is not up to standard, the heat treatment hardness of die steel is not enough or too hard, which will greatly reduce its service life.
            熱處理硬度如果過高,就會導致材料開裂,裂紋等問題。在模具鋼使用過程中也會大大的降低它的使用壽命。
            If the hardness of heat treatment is too high, it will lead to material cracking, cracks and other problems. In the process of using die steel, its service life will be greatly reduced.
            以上硬度一般為真空熱處理高硬度,如超過此硬度,不但材料的性能方面不能保證,還會產生開裂與裂紋等問題。
            The above hardness is generally high in vacuum heat treatment. If the hardness is exceeded, not only the performance of the material can not be guaranteed, but also cracks and other problems will occur.
            1.模具截面大,鋼材淬透性差,如大型模具選用了淬透性低的鋼種。
            1. The cross section of the die is large, and the hardenability of the steel is poor. For example, the steel with low hardenability is selected for the large mold.
            解決方法:正確選用模具鋼種,大型模具應選用淬透性高的高合金模具鋼。
            Solution: the correct selection of die steel, large-scale mold should choose high hardenability of high alloy die steel.

            山東模具鋼
            2.模具鋼原始組織中碳化物偏析嚴重或組織粗大,鋼中存在石墨碳和碳化物偏析、聚集。
            2. Carbide segregation is serious or coarse in the original structure of die steel, and graphite carbon and carbide segregation and aggregation exist in the steel.
            解決方法:加強原材料檢查,確保原材料符合標準。對不良原材料鋼材進行合理的鍛造并進行球化退火處理,確保獲得良好的組織。碳素工具鋼不易多次退火,以防石墨化。
            Solution: strengthen the inspection of raw materials to ensure that the raw materials meet the standards. Forging and spheroidizing annealing treatment should be carried out to ensure good microstructure. Carbon tool steel is not easy to be annealed many times to prevent graphitization.
            3.模具鍛造工藝不正確,鍛造后未進行很好的球化退火,使模具鋼球化組織不良。
            3. The die forging process is not correct, and the spheroidizing annealing is not carried out well after forging, which makes the spheroidizing structure of die steel poor.
            解決方法:嚴格執行鍛造工藝和球化退火工藝,保證有良好的預備熱處理組織。
            Solution: strictly implement forging process and spheroidizing annealing process to ensure good preparation of heat treatment structure.
            4.模具表面未除凈退火或淬火加熱時產生的脫碳層。
            4. The decarburization layer produced during annealing or quenching heating is not removed from the die surface.
            解決方法:熱處理前應徹底清除模具表面的銹斑和氧化皮,并注意加熱時的保護,盡量采用真空加熱淬火或保護氣氛加熱淬火,鹽浴加熱時應進行良好的脫氧處理。
            Solution: before heat treatment, rust spots and oxide scales on the mold surface should be completely removed, and attention should be paid to the protection during heating. Vacuum heating quenching or protective atmosphere heating quenching should be used as far as possible, and good deoxidation treatment should be carried out when heating in salt bath.

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