CNC Machining vs Die Casting - How to Choose the Right Manufacturing Process | Dajin Precision

2020/2/4 15:09:57

There are lots of common manufacturing process for the increasing demands, a good option is beneficial for both suppliers and customers. Die casting vs CNC machining, what’s the difference and which one to choose? Here are some considerations for using a right manufacturing process.

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What is CNC Machining?

CNC machining (computer numerical control machining), which is a precision machining under the control of computer digitization, can perform a variety of special techniques and do complex surface treatment, such as chamfering, non penetrating pattern or texture carving, hole drilling at the bend, etc., even the most severe and difficult details are possibly to be achieved with CNC machining, it’s suitable for personalized requirements and custom machined parts.

What is Die Casting and How Does it Work?

Die casting process is to apply high pressure to the molten metal in the mold cavity, so as to create same shape and surface as the mold. The molten metal like aluminum and copper will be injected into a steel die and until fills the mold, cool it down, the metal will in the desired shape. Under die casting process, some simple punching and pattern forming work can be carried out. Compared with CNC process, its cost is lower, but the extremely complex treatment can not be completed.

Die Casting vs CNC Machining - How to Choose the Right Manufacturing Process

What’s the difference between CNC machining and die casting? When to die cast and when CNC machining is better? To choose the right method, we need to know the advantages and disadvantages of the two technologies, as well as their applications, characteristics.

1. From the amount of production, CNC machining is more ideal for low volume products because no tooling cost is required. Die casting is the first considered option for a high volume of consistent parts.

2. For the part features or details, the die can be made with all surface details included to produce parts directly, saves time greatly. While CNC machining parts may need post-processing or secondary machining.

3. For the cost and materials used, most of materials will be used in die casting, there is little scrap left. As CNC machining is a cutting operations, there will be some materials chips and leftovers around the machine, you need to clean or recycle it.

4. CNC Machining can produce more complex geometries, extremely large or oddly shaped parts and tighter tolerances that can’t be realized through die casting. Die cast parts can also processed with CNC processes to add more features.

Dajin Precision is a China leading CNC turned parts manufacturer and precision machining factory that specialized in CNC service and manufacturing for over 10 years.


DAJIN provides excellent quality turning services, precision turned parts, offering professional machining services at competitive price and on timely delivery. With our extensive machining capabilities, we produce the most challenging precision machining parts covering all Industries especially in mass production in automotive industry.