Thursday 21 February 2013

Casting is one of the oldest of the procedures performed in the metal

Casting is one of the oldest of the procedures performed in the metal. Products that use this method. Here is an attempt to improve the knowledge of casting parts.

Casting is one of four types: sand casting, permanent molding and plaster molding. All those kinds of castings and disadvantages. Depending on the characteristics of the product that is building and to determine the casting.

Sand Casting: Sand Casting is the oldest cast on. These shapes form the texture of 1950.The use depends on the product used in sand casting. As the final smooth finish later. Generally speaking, iron, Sand Casting Steel, brass, copper, aluminum and magnesium, which also often include the use of lead, tin and zinc.

Continuous Casting: the permanent mold used two parts of the mold. Merged porous matrices and molten metal into the mold. This means that the cooling of hot metal and mold parts are separated. Some products have an extruded metal, which is removed by grinding or hand flash. Usually made of tin, lead, zinc, and with this method.

Plaster: The plaster is one of the easiest ways. As always be used for metals with a low melting point, such as zinc, Aluminum cobut and. This is the simplest process, the mold can easily inhibit the process.

Die Casting: This is done by introducing molten metal into the mold die casting high or low. And before only the injection molding of low pressure, but is now in the high pressure Castings India on a larger scale. Models are well designed to make complex products with incredible precision and a smooth finish. It is made of high quality stainless steel has a higher melting point. It can be reused many times these models. It can be a mold cavity that only a single component, multi-cavity that simultaneously produce multiple identical parts, the different parts of die and die unit produces combination that produces results different parts together. Zinc alloy is commonly used based on copper, aluminum, magnesium, tin, lead and tin smelting.

Using We cast products with pore-free products that do not allow the passage of gas well and strong. And the use of two types of casting machines. Cold and hot casting department.

Use molding department hot metal high liquidity. The first is that the molten metal the swan neck to collect and released in the metal mold. The advantage of this method is / min increasing. But the downside is that the metal support high melting point and aluminum particles of iron absorption.

Used foundry cold room where you can not hot circuit can be used. In this process, the molten metal to the injector tip, and then injected into the mold metal. Metals with high melting point are launched with this process, but the downside is that the slow hot pie.

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