Lost foam casting foundry machine
Introduction to Lost Foam's advantage and process technology
1, The structure and shape casting process is not limited to product design and manufacturing to provide a wide range of degrees of freedom, short production cycle, high production efficiency, not sand, under the core, from the model, combined box, type, easy-to-a box of multi- cast, cast group, to achieve the most optimized design, to avoid the result under the core, from the model, boxes and other factors combined casting defects and waste.
2, casting dimensional accuracy, shape and size accuracy, internal and external quality, precision castings with the characteristics, could partially substitute for investment casting, reducing the machining allowance of up to 60%, process production rate of up to 95%.
3. Less investment, quickly launched, few workers, low cost, compact device, small footprint, technology easy to master, easy to implement automated production machinery.
The production principle and the process
The technique is made by the first foam model of EPC technology, linked to a special paint coating, dry sand placed in a special box, fill in the dry sand, three-dimensional vibration compaction, the vacuum state, casting, model gasification disappear, metal replacement model, replicate the same with the foam mold castings, after the release of the vacuum condensate, removed from the loose sand casting to the next cycle.
1. Make Foam gasification Mould (Manual, mechanical)
2. Foam gasification, Dry after the mould is combined.
3. Foam Gasification mould, brush, sprayed fire-resistant paint, dry again. ( Completely dry)
4. Put the special sand box on the three-dimensional vibrating table
5. Fill in low sand (dry sand) tap, Calibrating
6. Put the dry Foam Gasification mould on the bottom sand, according to process requirements to sand filling, smooth up the box mouth after automatic jolt ramming.
7. Sand box with a plastic film covering the mouth, put a gate Cup, and then vacuum system. Tight after the liquid steel casting, lost foam mold gasification, liquid metal take its place;
8. After the release of the vacuum casting and turned condensate tank, remove the casting to the next cycle.
This set of equipment and technology is a real, advantage of vacuum casting as a whole, for steel, iron, aluminum, copper and other brands, a variety of materials of different structures of large, medium and small types of castings, castings for complex effects better.
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