Investment Casting
Direct investment casting, also called the lost-wax casting process, is actually an ancient metal investment casting technologywith a history of over 6,000 years. Investment casting mold generally refers to the mold made with meltable materials (such as wax, plastic, etc.) in very accurate dimensions. The types of the investment casting systemsare applied to several layers of refractory coating, then heat it to create a solid and hard shell over the mold. The further step is to heat it at a very high temperature, so as to melt the inner mold so that let the fire-resistant shell is left. All these processes together we call "molding", which describes the basic method to make the shell that we desired for the next casting works.
After making the shell, the next casting works is similar to normal sand casting. Pouring the melted metal into the shell, wait until the casting part cools down. Then break the shell to acquire the finished part.
Lost Wax Investment Casting
Lost wax apa itu investment castingcould achieve complex castings of various alloys, especially high-temperature alloy castings can be cast. Such as jet engine blades, its streamlined outer profile, and cooling with the inner cavity, with a mechanical processing process almost impossible to form. With the investment casting process production can not only achieve mass production, but also ensure the consistency of the casting, and avoid the stress concentration of the residual knife pattern after mechanical processing.
Silica Sol Investment Casting
Rayforce investment casting factoryprovides batch silica sol investment casings at a reasonable investment casting price, timely supply, thoughtful service, praised and trusted by users. Manufacturing by heart and strict quality inspection, many years of casting production experience, complete specifications of investment casting products, and worry-free after-sales.
Stainless Steel Investment Casting
Rayforce products are made by investment casting and value-added services with an excellent design team and production equipment. Our investment casting process can produce parts for you in the medical, military, aerospace, automotive, and other industries.
Vacuum Investment Casting
Rayforce vacuum investment casting products is generally used for smelting high vapor pressure, easy to volatile loss of alloy, and high-quality castings. The cast should not contain volatiles. Vacuum die-casting is a process method of die-casting after establishing a certain vacuum in the die cavity, and its vacuum is generally in the range of 50~80kPa.
What Are The Advantages Of Investment Casting Process Over Traditional Sand Casting Process?
What Is Investment Casting Process
The first process of investment casting production is the manufacture of the investment casting mold, which is used to form the model of the cavity in the refractory shell, so to obtain castings with high dimensional accuracy and surface finish. In addition, the performance of the investment casting mold itself should make the subsequent processes such as shell making as easy as possible. In order to get the above high-quality requirements of the investment casting mold, in addition to a good press (press molten die mold), but also must choose the appropriate investment casting materials (referred to as mold material) and reasonable mold making process.
Most of the production uses pressure to press the paste mold material into the pressed shape to make the investment casting mold. Before pressing the casting mold, a thin layer of the parting agent is applied to the surface of the mold so that the molten mold can be removed from the mold. When pressing a wax-based mold, the parting agent can be divided into machine oil, turpentine, etc.; when pressing a resin-based mold, a mixture of sesame oil and alcohol or silicone oil is often used as a parting agent. The thinner the parting agent layer, the better, so that the investment casting mold can better replicate the surface of the pressed mold and improve the surface finish of the molten mold. There are three methods of pressing the investment casting mold, plunger pressurization, pneumatic pressurization, and piston pressurization.
What Is Investment Casting
Investment casting is also called lost wax casting when the wax is used for the mold. Investment casting usually refers to a casting scheme in which to shape by fusible material, and the shape surface is coated with several layers of refractory material to make the shell. Then the shape is melted out of the shell, so as to obtain the investment casting without parting surface, and the casting scheme can be filled with sand after high-temperature roasting. Because the investment casting mold is widely made of wax material, investment casting is often called lost wax casting.
The types of alloys that can be produced by invest casting process include carbon steel, alloy steel, heat-resistant alloys, stainless steel, precision alloys, permanent magnet alloys, bearing alloys, copper alloys, aluminum alloys, titanium alloys, and ductile iron.
The shape of the investment casting mold is generally more complex, which can be cast out of the minimum diameter of the hole up to 0.5mm. The minimum wall thickness of the casting is 0.3mm. In the manufacturing process, some parts are originally made from a combination of several parts, by changing the structure of the parts, design to a whole part and cast directly from the investment casting mold, in order to save processing time and metal material consumption, so that the structure of the parts more reasonable.
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