KT Metal Castings Blogs

The main difference between gravity casting and centrifugal casting is how molten metal fills the mold. Gravity casting relies on gravity to fill the mold, making it ideal for simpler parts. Centrifugal casting uses high-speed rotation to force metal outward, which improves density and is suited for cylindrical parts. What…

The main difference between sand casting and centrifugal casting is how the mold and metal interact. Sand casting uses static sand molds and gravity to form parts, while centrifugal casting spins a mold rapidly to force molten metal outward. Centrifugal casting produces denser, more precise parts with fewer impurities. What…

The main difference between expendable mold casting and investment casting is that investment casting is a type of expendable mold casting that uses a ceramic shell built around a wax pattern. All investment casting is expendable, but not all expendable mold casting uses the same detailed, precise process. What is…

Expendable mold casting is a metal forming process where the mold gets destroyed to remove the finished part. The mold is made from materials like sand, plaster, or ceramic that break apart after the metal cools and hardens. This process differs from permanent mold casting where the same mold creates…

The main difference between cast aluminum and cast iron is density; cast aluminum is light (≈ 2.7 g/cm³) while cast iron is heavy (≈ 7.2 g/cm³). Aluminum cools fast, dissipates heat, resists corrosion, and machines easily. Iron handles higher compressive loads, retains heat, costs less per kilogram, and melts at…

Foundries smooth cast parts with finishes such as as-cast, shot-blasted, tumble-deburr, machined, ground, polished, bead-blasted, powder-coated, anodized, and electroplated. Each step lowers roughness—from 200-500 µin Ra in sand cast to ≤4 µin Ra after precision polishing—while adding corrosion or cosmetic benefits and improving dimensional fidelity. Mechanical Surface Modification Processes Abrasive…

Aluminum castings vary widely in their ability to be welded successfully. The alloy series, casting process, and part identification are important in determining whether you can weld a cast aluminum part and which filler metal to use. This guide breaks down each aluminum casting series (1xx.x through 7xx.x) with specific…

Weld cast Aluminum by first cleaning the surface with a stainless steel brush and degreaser. Preheat the part to 300°F (150°C) to reduce cracking. Use AC TIG welding with 4047 filler rod for best results. Post-weld, allow slow cooling to avoid stress and cracking. Differentiating Casting Methods and Their Impact…

The main difference between investment casting and permanent mold casting is the mold type and application. Investment casting uses disposable ceramic molds for high-detail parts and complex shapes. Permanent mold casting uses reusable metal molds for faster production and stronger, less intricate parts. Investment Casting Investment casting, also known historically…

The main difference between investment casting and shell casting is the mold formation. Investment casting uses a wax pattern coated with ceramic, which is melted away before metal pouring. Shell casting builds a thin shell around the pattern using sand and resin, offering faster production but less intricate detail. Investment…