The design of centrifugal pipe casting machine needs to determine several parameters: the speed of the tube mold during pouring, pouring speed, pouring time, etc., and follow the following four principles.
1. The downward speed of the centrifuge should be uniform to ensure that the wall thickness of the cast tube is uniform, and the downward speed of the cast tube of different specifications is different.
2, when casting different specifications of the cast pipe, with different capacity of the fan bag. A set of fan-pack tilting mechanism can dump different weights of iron and water at one tipping speed.
3, the cooling water of the tube mold adopts closed-loop control, and the cooling water is controlled according to the temperature of the water outlet and inlet.
4, the speed of the centrifugal cast tube mold should ensure that the liquid metal into the tube mold immediately into a cylindrical shape, and can get a good internal structure of the cast tube, according to different specifications of the cast tube to determine the different speed. Casting characteristics: Horizontal centrifugal casting is characterized by liquid metal filling and solidification under the action of centrifugal force, good metal feeding effect, dense outer tissue of the casting, less non-metallic inclusions, good mechanical properties. Centrifugal casting does not need to shape, core making, saving the relevant materials and equipment investment. Hollow castings do not need to be poured, and the metal utilization rate can be greatly improved. Therefore, for some specific shapes of castings, centrifugal casting is a material saving, energy saving, high-efficiency process, but special attention must be paid to effective safety measures. Horizontal centrifugal casting can obtain castings without shrinkage, porosity and slag inclusion, and the structure is fine and the mechanical properties are good. When casting round hollow parts, the core can be omitted. In addition, centrifugal casting does not require a gating system, reducing the consumption of metal. However, the free surface of the inner hole of the cylindrical parts cast by centrifugal casting is rough, the size error is large, the quality is poor, there are more pores, slag inclusion, so it is necessary to increase the processing allowance, and it is not suitable for pouring alloys and alloys such as aluminum and magnesium that are easy to produce specific gravity segregation. Casting is a method of melting metal, making mold, pouring molten metal into mold, and obtaining blank metal parts with certain shape, size and performance after solidification. Casting is a process in which the metal is melted into a liquid that meets certain requirements and poured into the cast, and the castings with predetermined shape, size and performance are obtained after cooling and solidification and cleaning treatment. Because the casting blank is almost formed, it reduces the cost and reduces the production time to a certain extent by achieving the purpose of no mechanical processing or small processing. Casting is one of the basic processes of modern device manufacturing industry.