Whether it's ensuring packaging or accuracy, vacuum casting has become a very important process. Currently, most manufacturing companies have started using vacuum casting technology instead of traditional methods.
Silicone molds can be completed in one day. One mold can produce about 30 - 50 parts within 20 days. Vacuum casting enables continuous production. Compared to CNC machining and 3D printing, vacuum casting saves more machine preparation time. Similar injection molding can make parts faster, but producing necessary aluminum molds takes weeks. Compared to other manufacturing methods, vacuum casting has a time advantage.
Aluminum is more expensive than silicone. Under the same volume conditions, the price of liquid silicone is about 45% higher than that of aluminum. As a material reduction production method, CNC machining cuts aluminum blocks into ideal cavities. The cutting material is another material cost. Quality calculations and settings are made before CNC machining. All of these preparations result in higher labor costs. Vacuum casting replicates parts without wasting materials. It is more environmentally friendly.
Material is one of the key factors that make vacuum casting popular. For small batch production, vacuum casting can achieve the same effects as other manufacturing methods.
After 3D printing or CNC machining, the main model will undergo surface treatment according to customer requirements. After that, the cured silicone mold can have detailed surface restoration of the main model. This one-time surface treatment saves dozens of times in cost and time for subsequent copies.
Consistency in appearance and function is advantageous for market research and testing. The silicone molds produced by mother molds ensure that each replicated part has the same characteristics in terms of shape, size, and precision machining. This is why we need batch production. Consistency and rapid turnover allow for more flexible user preferences. Vacuum casting is the ideal choice for small batch production.
Thin-walled castings are lightweight, require less material, and have higher technical requirements. In some special cases, they are necessary. Products with functional shells require thin walls to achieve maximum efficiency. Products with complex internal structures rely on heat transfer between thin-walled parts. In traditional manufacturing, thin-walled castings are difficult to pour, which is a key reason for high failure rates. Under constant vacuum pressure, the structure of the produced parts can be compact and thin-walled.