Technology Difference Between 3D Printing &. Injection Molding

Technology Difference Between 3D Printing &. Injection Molding

3D printing technology is not a novel technology. It belongs to the thinking of the last century. The technology of the last century belongs to the market of this century.

As early as the 1980s, the concept of 3D printing technology has been proposed and recognized by foreign scientists, and officially entered people's lives in the mid-1990s. This is a rapid prototyping technology, based on a digital model file, using powder-like metal / plastic and other adhesive materials to construct objects by printing layer by layer.

Plastic injection molding refers to a method of obtaining a molded product by stirring a completely melted plastic material at a certain temperature with a high-pressure injection into a mold cavity and cooling and solidifying. The process started in the 1920s and has a history of nearly 100 years. It is a widely used and very mature industrial manufacturing technology.

In the plastic manufacturing industry, 3D printing and injection molding are often used for PK, and there are a lot of talks about 3D printing as the terminator of injection molding. For manufacturers, it is one of the topics that they are most concerned about who has the highest competitiveness.

So, what is the difference between 3D printing technology and injection molding?

Production mode

As long as the injection molding process has injection molds, standardized products can be produced at low cost and on a large scale. Therefore, for traditional large-scale and large-scale manufacturing, injection molding is still the best choice at present.

The 3D printer does not need traditional tools, fixtures, machine tools or any molds, and can directly, automatically, quickly, directly and accurately convert any 3D design in the computer into a physical model. Thanks to the large size of the 3D printer, Different from the characteristics of the traditional injection molding process, the more complex and non-solid objects, the faster the processing speed, the more the cost of raw materials is saved, so it is better at manufacturing personalized and diversified products.

Manufacturing cost

Due to the wide availability of raw materials for injection molding, and its large-scale and rapid standardized production, it is also conducive to reducing the cost of a single product. Therefore, from the perspective of manufacturing costs, the cost of injection molding is much lower than 3D printing technology.

However, for industrial manufacturing, the real cost saving part of 3D printing is the modification of the prototype. Modifying the prototype only needs to modify the CAD model without any manufacturing costs.

In injection molding, if the prototype is a steel mold, the modification cost will be relatively low, but if an aluminum mold tool is used, the cost will be much higher. This is also the reason why many companies or individuals engaged in mold design will choose to create 3D printers for printing.

Application area

At present, the injection molding process can realize the mass production of articles with consistent shapes, so it is very suitable for large-scale standardized product manufacturing.

3D printing only needs to input three-dimensional images through the control terminal to print raw materials into physical models, and even directly manufacture parts or molds, which effectively shortens the product development cycle. 3D printers for 3D production have been widely used in maker, architecture design, mold model design and other fields.

Posted By Leila

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