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      模具的原材料的控制從下列幾方面進行:
      模具的原材料的控制從下列幾方面進行:
      The control of the raw material of the die is carried out from the following aspects:
      1、宏觀檢驗
      1. Macro-examination
      化學成分對保證鋼材的性能是決定性的,但成分合格,不能全面來說明鋼材性能,由于鋼材內部組織和成分的不均勻性,宏觀檢驗在很大程度上補充了這方面的不足。
      Chemical composition is decisive to ensure the performance of steel, but the composition is qualified, which can not fully explain the performance of steel. Because of the heterogeneity of the internal structure and composition of steel, macro-inspection to a large extent complements this deficiency.
      宏觀檢測可以觀察鋼的結晶情況,鋼的連續性的破壞和某些成分的不均勻性。
      Macroscopic examination can observe the crystallization of steel, the destruction of continuity of steel and the inhomogeneity of some components.
      2.1、退火組織的評定
      2.1. Assessment of Annealing Microstructure
      退火的目的,降低鋼的硬度,便于機加工,同時也為后續的熱處理作組織準備。
      The purpose of annealing is to reduce the hardness of the steel and to facilitate machining. At the same time, it is also to prepare the structure for subsequent heat treatment.
      碳素工具鋼退火組織按GB1298第一級別評級圖評定。
      The annealing structure of carbon tool steel is evaluated according to the first grade grading chart of GB1298.
      2.2、碳化物不均勻性
      2.2. Carbide inhomogeneity
      Cr12型萊氏體鋼,組織中含有大量的共晶碳化物,碳化物不均勻性對使用性能產生非常重要的影響,所以對其碳化物的分布必須有嚴格的控制。
      Cr12 type ledeburite steel contains a lot of eutectic carbides in its structure. Carbide inhomogeneity has a very important impact on its performance, so the distribution of carbides must be strictly controlled.
      總而言之,由于模具生產廠和車間的生產對象比較繁瑣,并且多少又是單件、小批量,從而為模具生產定額的制定和管理帶來一定的難度,再加上各廠和車間的生產方式、設備、技術素質又不太一樣,所以在制定定額時,必須要根據本廠和車間的實際情況,找出適當的方法制定出既先進又合理的工時定額,以提高勞動生產率的目的。
      In a word, because the object of production in the mould factory and workshop is rather complicated, www.laoniangongyu56.com www.zaoxingji.com.cn www.shejimoju.com www.ldgcasting.com www.hslcasting.com.cn www.bdhxnt.com
      and it is more or less single-piece and small batch, it brings some difficulties to the formulation and management of the mould production quota. Moreover, the production mode, equipment and technical quality of each factory and workshop are different, so it is necessary to formulate the quota. According to the actual situation of the factory and workshop, we should find out appropriate methods to formulate advanced and reasonable working hours quota, so as to improve labor productivity.

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