With several effective manufacturing processes available, choosing the right one that fits your metal part requirements is challenging. CNC Machining and Die casting are two of the most common industrial manufacturing methods.
But which is better?
Here is a comprehensive CNC Vs. Die Casting points to understand the most suitable one for your project.
CNC VS. DIE CASTING: WHAT ARE THE DIFFERENCES?
CNC MACHINING PROCESS
CNC machining is cutting tools to remove additional material and get the desired shapes. The process is based on a computer-operated program using G codes, instructing the machine to cut the material and process. CNC stands for Computer Numerical Code which enhances the efficiency of machining with an automated process. Think of it like a robot that works on a preloaded program and makes the task more accessible and accurate.
DIE CASTING PROCESS
Unlike CNC, die casting is a completely manual process that involves metal, cavity molds, tools, and molten metals. Metals like aluminum, zinc, and copper are melted and poured into a die or mold of the shape desired. Once the liquid is cold, the desired shape is eliminated from the mold and then delivered after a finishing process. The parts are used for construction, structural and industrial needs.
For low-volume production, CNC machining is ideal as it does not need tooling costs. But, when it comes to high-volume production, die casting always wins due to its quality and consistency.
TIME & SPEED
CNC machining needs a post-cutting process and rechecking the program with every unique shape. The higher the production volume, the more time it takes to get the desired quantity with CNC. On the other hand, die casting is a faster option for large-scale production as manual labor and molds are more efficient than getting the digital model ready and proceeding with further finishing.
REMAINING MATERIAL OR WASTE
While there is no scrape material in die casting, the process is more affordable for industrial requirements. CNC machining leaves more waste while carving away the layers of metal blocks. If you are into minimalism and waste management, die casting is always a better option than CNC machines. Or reusing the material with a recycling system gets essential due to the high amount of waste during the process.
Die casting has evolved over the years with a controlled and consistent approach, which offers excellent qualities and accuracy for demanding industries. Medical devices, aerospace, and heavy-duty equipment prefer to die casting as CNC machining is still behind when you talk about precise shapes within the deadline.
No matter which process you choose, it is crucial to understand that Die casting and CNC machining are often utilized together to boost the effectiveness of your product line. With state-of-the-art machining and high-quality cavity molds, the process gets more efficient. However, die casting is always the first choice of big manufacturing companies and large-scale production needs.