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  • Requirements For Working Conditions For Machining Precision Die Accessories
    Nov 30, 2018

    The CNC Machining, CNC turning, Auto lathe turning, CNC Milling,Stamping, Sheet metal fabrication, Casting, Injection molding are the common machining process.

    With the development of precision mould, the material requirement is higher for the precision measurement of products. So in the development of precision mould, the development of precision machining enterprises is accompanied by opportunities and challenges. The more technology an enterprise needs to meet the needs of its customers. Wear resistance, precision die parts processing, the blank in the mold plastic change, along the cavity surface flow and slide, resulting in the cavity surface and the blank produced severe friction, resulting in mold wear and invalidation. Therefore, the wear resistance of materials is the most basic, one of the most important properties of the mold. Hardness is the main factor affecting wear resistance. In general, the higher the hardness of die parts, the less wear and wear resistance.

    Strength and toughness of materials: the working conditions of precision die fittings are affected by many aspects, some of them often bear large impact load, which leads to brittle fracture. In order to prevent the die parts from breaking suddenly, the die should have high strength and toughness. The toughness of the die mainly depends on the carbon content, grain size and microstructure of the material.

    Fatigue fracture performance: in the precision die parts processing process, under the long-term cyclic stress, often lead to fatigue fracture. Its forms include low energy multiple impact fatigue fracture, tensile fatigue fracture, contact fatigue fracture and bending fatigue fracture. The fatigue and fracture properties of the die mainly depend on its strength, toughness, hardness and the content of inclusions in the material.

    High temperature resistance: when the working temperature of the die increases, the hardness and strength will decrease, leading to early wear or plastic deformation of the mold failure. Therefore, the materials of die should have higher tempering resistance and stability, so as to ensure that the mould has higher hardness and strength at working temperature.

    Cold and thermal fatigue resistance: some dies in the process of repeated heating and cooling state, make the cavity surface tension, pressure to change the role of stress, cause surface crack and spalling, increase friction, hinder plastic deformation, The dimension precision is reduced, which leads to die failure. Cold and hot fatigue is one of the main failure forms of hot work die.

    The above points are the requirements of the working conditions of precision die parts processing. Only by doing these standards well can we better carry out the production development, serve the customers, and meet the needs of the market to adapt to the development of the market.