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            保定宏晟隆精密鑄造有限公司
            公司地址:保定南市區朱莊
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            當前位置:不銹鋼鑄件鑄造性能
            [來源:www.phecda.org] [作者:精密鑄造] [日期:19-01-08]

            1、鑄件結構 1, the structure of the casting 鑄造時要全面考慮鑄件的結構、形狀、大型、壁厚及其過渡等影響鑄件液態和固態收縮的因素,選擇適當的工藝參數,防止縮孔縮松等鑄造缺陷。鑄件的澆冒口系統設計要合理,若要采用冷鐵等工藝措施,其安放的部位要合理,既要保證鑄件內部組織的致密性,又要盡量避免應力集中的情況產生。 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、熔煉 2, melting 熔煉過程中,盡量降低P、S等有害元素的含量,降低N、H、O等氣體和夾雜物含量。通過采用低磷鋼中間合金,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、保溫 3, heat preservation 通過適當延長鑄件在砂型中的保溫時間,主要是控制開箱溫度低于70℃,保證鑄件在砂型中充分完成液態和固態收縮,避免外力因素造成應力集中的情況發生。 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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