centrifugal casting - a method of manufacturing preforms castings, which is based on centrifugal force on the molten mass of material.Foundry, a producer of shaped pieces and rough castings, has a wide variety of methods of casting: gravity die casting in sand-clay molds, Special casting, under pressure, etc.But the quality of the resulting casting is optimal centrifugal casting.
In essence, the method consists in that by centrifugal force the molten material uniformly spreads over the inner surface of the mold and crystallizing the workpiece forms with the required parameters.I do not think that this method is only applicable to metals and their alloys.In fact, casting plastic products has become unusually widespread.But plastics have a number of features that should be considered when working with them.Plastic Injection is often carried out under pressure, which ensures the accuracy of a particular product.
In most cases, different types of casting are used for metal castings.This centrifugal casting has several advantages: no hollow shells and slag inclusions in the resulting casting, high-density material, high wear resistance of the metal, which is achieved through a uniform structure, and others. The main advantages of this method is referred to as material savings on procurement and a significant reduction in the complexity of the entire processprocess (by the maximum approach of casting to the finished product).
Centrifugal casting has a number of "cons."These include: inaccurate resulting free surfaces of the workpiece, a tendency to phase separation material, the high cost of forms (due to increased requirements for dimensional accuracy).
When centrifugal casting method using special machines.They vary in the direction of the axis of rotation - vertical, horizontal and inclined axis (though the last is rarely used).Machines with a vertical axis is used to produce small-length pieces with minor differences of steps (rings, pistons, plugs, etc.).Machines with horizontal axis of rotation allows to obtain high-precision casting lengthy one with the wall thickness.Similarly prepared by cast-iron pipes.This method is the most common.Using centrifugal casting can produce pipes with walls of 80 to 300 mm (depending on the equipment used).The only thing that you should definitely keep in mind is the fact that with this method in the blanks internal stress arises.So after receipt of castings necessary to carry out a joke.
prepared by centrifugal casting and other components for the workpiece, which represent a body of revolution.The most popular method of precision casting uses in the manufacture of preforms from non-ferrous metals (this method allows you to save expensive materials).
