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What are the influencing factors on the quality of the machine tool for castings?

by:BoQiao Machinery     2020-11-29
What are the influencing factors on the quality of the machine tool for castings? Machine tool for castings quality mainly includes the appearance quality of the machine tool castings, the inherent quality and machine tool machine tool castings used for castings quality. Appearance quality refers to the machine tool for castings surface roughness, surface defect, size deviation, deviation of shape, and weight deviation; Inner quality mainly refers to the chemical composition of machine tool castings, physical properties, mechanical properties, microstructure, and exist in the inside of the machine tool castings hole, crack, inclusion, segregation, and so on and so forth; Use quality refers to the machine tool castings endurance ability to work under different conditions, including the wear-resisting, corrosion resistance, resistance to chilling excitation properties, such as fever, fatigue, shock absorption, and by cutting resistance, weldability and so on process performance. Casting factory what are the influencing factors on the quality of the machine tool for castings? Machine tool castings quality has a great influence on the performance of mechanical products. For example, the wear resistance and dimensional stability of machine tool castings, directly affect the precision of the machine tool to keep life. All kinds of pump and hydraulic parts of impeller, shell lumen size accuracy and surface roughness and contour line, directly affects the working efficiency of the pump and the hydraulic system, energy consumption and the development of the corrosion, etc. ; Internal combustion engine cylinder block, cylinder head, cylinder liner, piston ring, the strength of the exhaust pipe and other casting and quench heat shock resistance, directly affects the working life of the engine. What are the influencing factors on the quality of the machine tool for castings? The technology, the design of machine tool castings. Machine tool castings during design, in addition to according to the working conditions and the metal material performance to determine machine tool castings geometric shape, size, also must from the perspective of the casting alloy and casting characteristics to consider the rationality of the design, namely the obvious size effect and solidification, shrinkage, stress and other problems, in order to avoid or reduce the composition of machine tool castings produced segregation, deformation, cracking and other defects. Second, the reasonable casting casting process. Namely, according to the structure of machine tool castings, weight and size, casting alloy characteristics and production condition, choosing the appropriate parting surface and modelling, core making method, setting up reasonable casting steel, cold iron, riser and gating system, etc. To ensure access to quality machine tool castings; Three, the casting machine tool castings with the quality of raw materials. Metal furnace charge, refractory materials, fuel, fluxing agent, modifier and casting sand, sand binder, and the quality of coating materials such as substandard, can make the machine tool castings produced porosity, pore, slag inclusion, defects such as adhering sand, affect the appearance quality and internal quality of castings, the serious will make machine casting scrap; Four, machine tool castings process operations, to make reasonable machine tool castings process operation procedures, improve the technical level of workers, machine casting process procedures implemented correctly.
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