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Precision casting production process and defect analysis
In the process of making precision castings, they are effectively liquid at room temperature, but soon the solidified material is effectively poured into the mold of its specific shape to wait for it to solidify and form. Most of the castings are solid in situ But heated to liquid metal materials. The material used in the processing of castings can be metal, sand or ceramics. In the process of use, the method of use will vary according to the requirements of its use. This method is called its Casting. In the production process of precision casting parts, parts with more complicated shapes can be produced, especially the blanks with more complicated inner cavities. The whole product has a very wide adaptability. Such products are metal materials that are often used in the industry. Cast it. In the process of processing precision castings, the requirements for the quality of the castings are relatively good, which will directly lead to the reduction of the machining allowance, so that the defects of the product will be reduced to a certain extent, so that the air or It was cast in a vacuum. It was previously considered to be a qualified heat-resistant steel precision casting, but it is now judged as a scrap. In the actual production of precision castings, it is often necessary to effectively analyze the defects of the castings, and to find out the reasons for the defects purposefully, so that it is convenient to take measures to prevent them, and then effectively combine the actual conditions of the casting production. Appropriately formulate technical requirements. Castings need to have a certain degree of hardness and tensile strength in terms of materials, a certain degree of elongation, impact toughness, dimensional accuracy, and shape accuracy during use. Different castings have different requirements and use different sizes. And geometric tolerances
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