What is the ROI of mold manufacturers using metal 3D printing?

1. Optimizing the cost structure: changing from "reducing material waste" to "precision additive manufacturing"
Subtractive methods including milling, electrical discharge, and wire cutting are used in traditional mold making. The material utilization rates are usually less than 70%. Also, the waste that is made during the processing needs to be managed separately, which raises prices even more. For example, making an automotive injection mold the old way takes around 120 kg of mold steel billet, but the finished result only weights 80 kg and wastes 33% of the material. Using the additive manufacturing approach of "layer by layer stacking," metal 3D printing can use more than 90% of the material. For instance, the iSLM420 equipment from Zhongrui Technology only needs 85 kg of powder material to make a mold for an aircraft engine blade. The extra powder can be reused, which lowers the cost of the single mold material by 40%.

Also, metal 3D printing gets rid of a lot of complicated steps that are needed in traditional methods, like heat treatment, precision machining, and assembly. This saves a lot of money on equipment and manpower. A comparison of a certain automotive parts manufacturer shows that traditional methods need 5 CNC machine tools, 2 electric discharge machines, and 10 operators. In contrast, metal 3D printing only needs 1 piece of equipment and 3 technical staff to make the same amount of parts. This cuts equipment depreciation and labor costs by 65%.

2. Big jump in production efficiency: from "weekly cycle" to "daily delivery"
Another big problem with older techniques is that it takes a long time to make molds. For example, making a sophisticated die-casting mold the old-fashioned way takes 12 phases, such as designing, cutting, EDM, assembling, and debugging. The whole process takes 6 to 8 weeks. Also, changes to the design mean that the mold has to be opened again, which adds more time to the delivery. Metal 3D printing can turn digital models into solid molds without any further procedures. This shortens the development time to 3–5 days. A case study of a company that makes medical implants indicates that once they started using metal 3D printing, the time it takes to make unique bone molds went from four weeks to 72 hours, and the time it takes to fill urgent orders went up by 80%.

The process path has been made much simpler, which has led to the efficiency boost. In traditional craftsmanship, the mold cavity has to be split into several parts for processing and assembly. This can lead to accuracy errors because of the splicing gaps. Metal 3D printing, on the other hand, supports integrated molding, which lets you print complex molds with conformal cooling water channels and lightweight lattice structures all at once. This cuts down on steps in assembly and mistakes. For instance, Boeing makes molds for airplane fuel nozzles with metal 3D printing. This cuts down on assembly steps from 20 to 1 and lowers the cost of each piece by 35%.

3. Improving product quality: changing from "passive repair" to "active optimization"
The quality of the molds has a direct impact on how much of the final product is made and how quickly it is made. The standard design of a mold cooling system is simplistic, which can easily lead to uneven temperature distribution. This can cause problems like warping and shrinking of the product. Metal 3D printing can create a conformal cooling channel inside the mold that fits the shape of the mold cavity perfectly. This lets the cooling liquid directly affect the hot spot, which greatly improves temperature uniformity. A case study of an automobile injection mold reveals that the use of a conformal cooling design resulted in a reduction of the surface temperature differential from 15 ℃ to 3 ℃, a 30% drop in the injection cycle time, and an increase in the product yield rate from 85% to 98%.

Also, metal 3D printing has a density advantage (typically up to 99.5% or more) that makes molds far more resistant to wear and fatigue than traditional casting molds. A particular die-casting mold maker did a test to compare the two types of molds. They found that traditional molds crack after 20,000 uses, whereas metal 3D printed molds stay intact after 50,000 uses, which means they last 150% longer. The mold cost for each die casting is lower in the long run, even though the initial manufacturing cost is a little more.

4. Expanding the application scenario: from "single mold" to "whole industry chain empowerment"
Metal 3D printing is valuable not only in the mold-making process, but also in the optimization of the whole "design production after-sales" chain, which brings in more money for businesses. In the automotive industry, metal 3D printing can quickly make lightweight parts like battery pack brackets made of aluminum alloy and carbon fiber reinforced metal wheels, which is what new energy vehicles need to be lighter. In the aerospace industry, it supports the integrated molding of special materials like titanium alloys and high-temperature alloys, which is a big step forward from traditional methods for making complex structures. Customized metal bones, dental implants, and other high-value-added items have become major areas of growth in the medical field.

For example, a high-end custom automobile manufacturer employs metal 3D printing to make pieces for the inside of cars. This lets them make bespoke designs without having to make molds, and the profit per piece is 50% higher than with traditional methods; Metal 3D printing can swiftly make copies of broken parts like brake pads and radiators in the after-sales market. This cuts down on repair time and expenses. A military business case study illustrates that employing metal 3D printing to fix ship hydraulic system parts has cut the maintenance cycle from two weeks to three days, making sure that the ships can still fight on the battlefield.