How to operate investment casting?

Investment casting is a high-precision, high-quality casting process suitable for the production of precision castings with complex shapes and high precision requirements. The principle is to heat the metal material to a high temperature state, then inject it into a pre-made refractory mold, solidify it in the mold, and finally obtain the casting. The following will introduce the process flow of investment casting and how to operate it.

Process flow of investment casting

Mold making: First, it is necessary to make a mold according to the shape and size of the casting, generally made of refractory materials such as gypsum, silicone, etc. Automotive parts silica sol castings need to take into account factors such as shrinkage cavities, shrinkage, and shape of the castings, and strict inspection and testing are required.

Molten material preparation: After the mold is made, the metal material needs to be heated to a high temperature state to make it liquid, and then purified and adjusted. This process requires mastering the melting point, melting time, chemical composition and other parameters of the metal material.

Pouring and injection: After the molten material is prepared, the metal material needs to be injected into the mold so that it can solidify and form in the mold. The injection process needs to control parameters such as temperature, flow, and pressure to ensure the quality and stability of the casting.

Cooling treatment: After the casting is injected, it needs to be cooled. This process requires controlling the cooling rate and temperature to avoid quality problems such as shrinkage, shrinkage or deformation of the casting.

Finishing and surface treatment: Finally, the casting needs to be finished and surface treated to meet its accuracy and appearance requirements. This process requires the use of professional equipment and technology, such as lathes, grinders, polishing, etc.

How to operate investment casting?

Choose suitable materials and molds: Choose suitable materials and molds according to the shape, size and requirements of the casting, and ensure their quality and stability.

Finely control the molten material preparation process: Master the heating, purification and composition adjustment processes of metal materials to ensure the quality and stability of the molten material.

Control the injection process parameters: Control the temperature, flow, pressure and other parameters during the injection process to ensure uniform injection and stable quality of the casting.

Strictly control the cooling treatment: Control the cooling rate and temperature to avoid quality problems such as shrinkage, shrinkage or deformation of the casting.

Choose appropriate processing and surface treatment methods: Choose appropriate processing and surface treatment methods to ensure that the precision and appearance requirements of the castings meet the standards.

In short

Investment casting is a high-precision, high-quality casting process. Its principles and process flow require careful operation and strict control to ensure the quality and stability of the castings. In practical applications, investment casting manufacturers need to comprehensively consider factors such as materials, molds, molten materials, injection and cooling treatment, and need to adopt advanced equipment and technology to meet customer needs and market competition.