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当前位置:不锈钢铸件铸造性能
[来源:www.] [作者:精密铸造] [日期:19-01-08]

1、铸件结构 1, the structure of the casting 铸造时要全面考虑铸件的结构、形状、大型、壁厚及其过渡等影响铸件液态和固态收缩的因素,选择适当的工艺参数,防止缩孔缩松等铸造缺陷。铸件的浇冒口系统设计要合理,若要采用冷铁等工艺措施,其安放的部位要合理,既要保证铸件内部组织的致密性,又要尽量避免应力集中的情况产生。 Should fully consider when casting casting structure, shape, large, wall thickness and transition effects such as factors of liquid and solid state contraction of castings, select the appropriate process parameters, to prevent the shrinkage cavity casting defects such as shrinkage. Castings poured riser system design is reasonable, if you want to use cold iron process measures, such as the site of setting to reasonable, both to ensure the density of the casting internal organization, and try to avoid stress concentration occurs. 2、熔炼 2, melting 熔炼过程中,尽量降低P、S等有害元素的含量,降低N、H、O等气体和夹杂物含量。通过采用低磷钢中间合金,可以起到很好的效果。 Smelting process, try to reduce the content of harmful elements such as P, S, lower N, H, O gas and inclusion content, etc. Through the adoption of low phosphorus steel intermediate alloy, can have very good effect. 3、保温 3, heat preservation 通过适当延长铸件在砂型中的保温时间,主要是控制开箱温度低于70℃,保证铸件在砂型中充分完成液态和固态收缩,避免外力因素造成应力集中的情况发生。 Through appropriate to extend the time of castings in sand mold, heat preservation, mainly control box temperature below 70 ℃, ensure full completion of liquid and solid in the sand mould castings contraction, avoid stress concentration caused by external force factors. 1, 1 casting casting casting structure, the structure must be considered in the casting structure, shape, scale, thickness and transition factors such as casting liquid and solid shrinkage, proper selection of parameters, to prevent shrinkage and other casting defects. The design of gating system of castings to be reasonable, if a cold iron and other technological measures at site should be reasonable, to ensure the compactness and casting structure to avoid the stress concentration situation that should be considered. When the casting casting structure, shape, thickness and influence factors of Wall Street and transformation, such as liquid and castings solid state contraction selection the appropriate process parameters, the big hole to prevent shrinkage defects casting such as shrinkage. The design of system reasonable riser castings is, if you want to use the measures of chill process, such as the density of setting reasonable two big websites, ensure the internal pressure of the casting organization, and try the avoid concentration. 2, melting 2, melting smelting process, reduce the content of harmful elements P, s, N, h and O decreased the content of gas and inclusion. Through the use of low phosphorus steel alloy, can play a very good effect. Smelting tries to reduce the harmful, such as P, S, H elements the content of the O gas, through the content and inclusion, etc.. The middle low phosphorus steel alloy title, can have very good effect. 3, holding 3, thermal protection by holding time prolonging casting in sand mold, is the main control box temperature lower than 70 DEG C, the casting in sand mold fully completed liquid and solid shrinkage, avoid stress concentration occurs pipe to expand external thermal protection factors. Through the appropriate time of castings in sand mold. Is the main control box temperature is 70 degrees below, to ensure full and complete liquid mould castings contraction avoid in solid sand concentration, pressure is caused by external factors.

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