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Both investment casting and sand casting fall under the umbrella of casting processes; however, they exhibit notable differences in their technological process, scope of application, quality of castings, and cost implications. In the ensuing discourse, we shall dissect the distinctions between them across these several dimensions, with the aspiration that this analysis will aid in the judicious selection of the appropriate manufacturing technique.

With the rapid advancement of technology and the swift progress of society, the field of precision machining is bound to undergo significant transformations to adapt to societal development. Below, we analyze potential future changes from several perspectives:

CNC machining is a highly precise and automated manufacturing process that is suitable for products of various materials and complex shapes. The CNC machining we usually talk about includes CNC milling, CNC turning, CNC grinding, CNC wire cutting, and CNC compound machining, etc. Some products can be completed using the above single process, while some require the above multiple processes to complete, which depends on the product structure. So which products or parts are suitable for CNC machining? We classify and analyze from the following points:

In investment casting production, casting defects are inevitable due to the long and complicated process. If casting defects occur during production, it will not only increase production costs, but also affect production progress and delivery time. If quality accidents occur during use, it will not only cause significant economic and reputation losses to the company.

With the continuous change and development of science and technology, all walks of life are also facing the situation of continuous change and development. The CNC machining industry is no exception and will continue to develop with the changes in society and the development of science and technology. We can predict that the future of the CNC machining industry will change in the following aspects:

Investment casting is an ancient but still widely used metal fabrication process that is very common in the manufacturing industry. With the advent of Industry 4.0 and digital intelligence, how will this industry improve and develop in the future? What changes will there be in the future? We can discuss it from several aspects:

Let’s first talk about the main difference between investment casting and CNC machining?  Investment casting is a mold forming process; first, the mold (sand mold) is made, and then the metal liquid is cooled under the action of its own gravity to obtain the product. Due to the fluidity of liquids, investment casting can form products with complex structures. The precision of investment casting parts is not as high as that of CNC machined parts, but the cost is much lower than that of CNC machined parts. CNC machining is a molded product obtained by CNC cutting of solid metal materials. The machining cost is relatively high, but it can also achieve higher precision.