What is the difference between forging, stamping and casting? Do you really understand them?
Casting: Transforming shapeless molten metal into a shaped solid, analogous to playing with wax. It involves turning wax (scrap steel or pig iron) into liquid and molding it to obtain differently shaped solid objects (solid-liquid-solid).
Forging: The transformation of one solid shape into another solid shape, resembling the process of making dough. Small pieces of solid are kneaded and put into molds to create products of different shapes. It occurs at high temperatures, allowing the shape to change into other forms (solid to solid). Forging includes processes such as extrusion, drawing, piercing, etc.
Forging is shaping slowly, while casting is shaping at once.
Casting: Shaping happens at once, where molten liquid metal fills the mold cavity, occasionally resulting in air holes in the product.
Forging: Shaping occurs slowly, mainly through extrusion at high temperatures, refining grains in the parts.
Free Forging: A method where a heated metal blank is placed between the upper and lower die of forging equipment, subjected to impact force or pressure, causing direct plastic deformation to obtain the required forgings. Suitable for single pieces, small batches, and heavy forgings. Divided into manual and machine free forging, with machine free forging being predominant in modern industrial production, particularly in heavy machinery manufacturing.
Die Forging: Also known as die forging, it involves placing the heated blank in a forging die fixed on die forging equipment and forging it into shape. Die forging can be performed using various equipment, with steam-air hammers and hot die forging presses being common in industrial production.
Casting: Involves melting raw materials and allowing them to naturally form in molds.
Forging: Shapes raw materials at high temperatures, refining grains in the parts.
Stamping: Stamps raw materials into shape using suitable dies.
Die-Casting: Utilizes pressure to inject melted raw materials into molds, achieving higher density or more precise shapes.
Casting includes high-pressure and low-pressure casting, differing in the pressure used and the machinery involved.
Forging, as a casting method, operates at lower temperatures and can shape metal into finished products in a semi-molten state.
Stamping transforms semi-finished products into finished ones using machines like punches at normal temperatures.
Die casting, a high-temperature casting method, is employed for complex structures. It involves heating metal to a liquid state, pressing it into molds, and cooling before product retrieval.
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