Manufacturer & Supplier of Custom Construction Machinery Part Castings with 17 Years' Expertise.
The "Steel Aesthetics" of the Foundry: When 1350℃ Molten Iron Meets Lost Foam
Have you ever seen molten iron at 1350℃? It's not "red," but a "bright white" like the core of the sun. The sparks that splash up when it's poured can leave burn marks on the steel plate—this is the most stunning "steel aesthetics" in the foundry.
The "Disappearing Art" of Bubble Models
The core of lost foam casting is "using foam to replace molten iron": we use EPS foam to make the model of the bucket teeth, coat the surface with three layers of refractory coating, and then bury it in dry sand. When molten iron is poured in, the foam will vaporize within 0.3 seconds, leaving only a "vacuum shape" for the molten iron to fill. There was no sound of molds colliding during this process, only the hissing sound of foam vaporizing—like steel "breathing".
![The Steel Aesthetics of the Foundry: When 1350℃ Molten Iron Meets Lost Foam 1]()
The Precision Code in the Sparks
The operator's safety goggles reflect the trajectory of molten iron splashes—this isn't random, but a signal of the molten iron's flow rate: if the sparks are fan-shaped, the flow rate is just right; if they're straight, the gate angle needs adjustment. An operator with 18 years of experience can read a flow rate change of 0.1 m/s from the arc of the sparks.
The "silent power" after cooling down
After the molten iron is poured, it takes 24 hours for the temperature inside the sand box to drop to room temperature. When the sand box is opened, the surface of the bucket teeth still retains residual heat and has a matte metallic sheen—it is no longer flowing molten iron, but a wear-resistant part that can withstand 50 tons of impact. This transformation "from liquid to solid" is like a coming-of-age ceremony for steel.
Summarize
Many people think of casting as a "rough industry," but in Yuezhong's workshop, it is a combination of temperature, precision, and art: molten iron at 1350℃ is the pen, lost foam is the paper, and what is ultimately written is the "durability" of engineering machinery.
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West side of National Highway 206, Liuguanzhuang Town, Ju County, Rizhao City, Shandong Province, China