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  • How to Repair Defects in Precision Castings

    Precision castings are metal parts manufactured through precision casting technology, with high dimensional accuracy and surface finish. However, during the production process, due to various factors, precision castings may exhibit various defects, such as porosity, shrinkage, cracks, deformation...
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  • Reasons for the Formation of Shrinkage Holes in Precision Casting

    Precision casting is a common metal manufacturing technique that involves pouring liquid metal into fine molds to produce metal parts with specific shapes and sizes. However, during the precision casting process, there may be problems with shrinkage holes, which may result in the manufactured met...
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  • Solidification method and process requirements for copper castings

    Surface coating process for copper castings. Copper castings are used to manufacture copper products that require surface spraying, which can effectively isolate air and water. The painting process can generally be divided into: spray painting, powder spraying, and electrophoresis. After surface ...
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  • Leakage Method and Processing Steps for Aluminum Casting

    Treatment method for leakage of aluminum castings: 1. During the hot stamping stage, analyze whether there is local air entrainment and poor fusion of alloy flow in the pressed aluminum casting. Properly add slag collection bags and exhaust ducts; 2. The far end or wall thickness of the component...
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  • Casting and molding methods for copper castings

    Copper castings can be divided into ordinary sand casting, metal casting, die-casting, centrifugal casting, continuous casting, investment casting, ceramic casting, electroslag remelting casting, bimetallic casting, etc. according to different casting methods. Among them, ordinary sand castings a...
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  • Causes of Surface Depression in Copper Castings and Electroplating Process

    The concave areas on the surface of copper castings are called depressions, which can be caused by: 1. In situations where the performance of the machine’s injection mechanism is poor (such as in old vertical machines), when the working fluid pressure is unstable, the injection pressure is ...
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  • What are the storage issues with copper castings?

    Several major issues to pay attention to when storing copper castings 1. When storing copper castings, it is necessary to place them in a ventilated, dry, and corrosion-free inventory environment; Strictly prevent rainwater from getting wet. 2. Copper castings must not come into contact with othe...
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  • Prevention methods for wall thickness defects in copper castings

    The wall thickness of copper castings (commonly referred to as wall thickness) is a significant factor in the die casting process. Wall thickness is closely related to the entire process specification, such as the calculation of filling time, the selection of inner gate speed, the calculation of ...
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  • Four elements in the use process of die-casting parts

    Precautions during the use of die-casting parts: (1) Poor corrosion resistance. When the impurity elements lead, cadmium, and tin in the alloy composition exceed the standard, it leads to aging and deformation of the casting, manifested as volume expansion, significant decrease in mechanical prop...
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  • Inspection items and polishing methods for die-casting parts

    The inspection of die-casting parts is generally determined by both the supply and demand parties, and the routine inspection items are: 1) The appearance quality of die castings should be smooth and free from cracks, porosity, bubbles, and any penetrating defects. 2) The chemical composition and...
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  • Summary of Disadvantages and Defects of Die Castings

    Disadvantages of using die-casting parts: 1. Equipment costs are expensive The equipment required for die-casting production, such as die-casting machines, melting furnaces, holding furnaces, and die-casting molds, are quite expensive. 2. Poor airtightness of die-casting parts Due to the phenomen...
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  • Treatment Method for Cracks Occurred during Sand Casting of Aluminum Parts

    The solution to the occurrence of casting cracks in sand cast aluminum parts is as follows: 1. Improve the wall thickness of the casting structure of the sand casting aluminum parts to strive for uniformity, and make transition rounded corners at the corners to reduce stress concentration. The sp...
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