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覆膜砂铸造工艺

发布时间:2020-01-11
覆膜砂模具覆膜砂叠箱浇铸模具/热芯盒模具/铸造模具/覆膜砂模具:覆膜砂铸造工艺是一种热覆膜砂叠型铸造工艺,涉及金属零件的铸造成型,包括制模、型砂制备、芯型制作、芯型成形、合模等步骤,制成的模型为金属模型,型砂制备中所用的原料是覆膜砂,成形强度高,流动性好,能够制造形状复杂的砂芯,砂芯表面质量好,其溃散性好,铸件容易清理。使用射芯机进行芯型制作和芯型成形,生产效率高,起模容易,砂型的尺寸精度高。由芯型叠加组成叠型浇注系统,在浇注时承压力大,填充力强,产量及成品率高,在保证质量的同时生产成本也有所下降,能够承担高精度小型铸件的大批量生产。叠箱串铸中间覆膜砂型模具,它包括上模板、下模板、加热板、定位机构和紧固机构,其特点是:在上、下模板上分别对应设有一条以上水平直浇口凸模,在水平直浇口凸模两侧分别设有至少二个半球凸模,半球凸模与水平直浇口凸模之间设有内浇口凸模。本实用新型适用于铸件直径为50mm以下垒箱串铸砂型的中间覆膜砂型机械化制造。采用本实用新型制造的多个砂型叠置,可实现多箱垒注、无箱造型,适用于自动化铸造生产线,可大幅度降低工人劳动强度和生产成本,提高生产效率,显著提高产品的工艺出品率、正品率和产品质量。
Film-coated Sand Mold Casting Mould/Hot Core Box Mould/Casting Mould/Film-coated Sand Mould: Film-coated Sand Casting Process is a kind of hot-coated Sand Casting Process, which involves the casting of metal parts, including moulding, sand preparation, core moulding, core moulding, closing and other steps. The model made is a metal model. The raw material used in the preparation of sand is film-coated sand. It has high strength and good fluidity. It can make sand cores with complex shapes. The surface quality of sand cores is good. Its collapsibility is good and the castings are easy to clean. Core-shooting machine is used for core-making and core-forming, which has the advantages of high production efficiency, easy start-up and high dimensional accuracy of sand moulds. The superimposed pouring system consisting of core mold superimposition has the advantages of high bearing pressure, strong filling force, high yield and finished product rate, while guaranteeing the quality, the production cost has also been reduced, and it can undertake the mass production of high precision small castings. The sand mould with film covering in the middle of stacked box castings consists of upper template, lower template, heating plate, positioning mechanism and fastening mechanism. Its characteristics are that there are more than one horizontal gate punch on the upper and lower templates, at least two hemispherical punches on both sides of the horizontal gate punch, and an inner gate punch between the hemispherical punch and the horizontal gate punch. The utility model is suitable for the mechanized manufacturing of intermediate coated sand moulds for castings with a diameter of less than 50 mm. The sand moulds manufactured by the utility model are superimposed, which can realize multi-box base injection and no-box moulding, and is suitable for automatic casting production line. The labor intensity and production cost of workers can be greatly reduced, the production efficiency can be improved, and the technological yield, quality rate and product quality of products can be significantly improved.

当前地址:http://www.pyshexinji.com/news/792/  作者:鹏宇射芯机
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