Casting, forging, stamping, die-casting, what are the differences between them? What are the processing processes?

Casting: A metal forming process that directly injects molten metal into a Casting mold to form a certain shape. The raw materials are melted and allowed to form naturally in the forming mold, and the quality is slightly worse.

Casting is divided into two types: high-pressure casting and low-pressure casting. Simply put, after the metal is melted, the pressure of pressing the mold is different, and the temperature of heating the metal and the machine used for casting are different.

 

Die-casting: It is a type of casting. If the solution flows naturally into the mold, the casting may have pore defects, so the melt is injected with a certain pressure, which will reduce the defects accordingly. The advantage of using a die-Casting Machine to form the solution at high speed is that it can make products with more complex shapes; while stamping is to use a punch to punch out solid objects, which can only make products with simpler shapes and single shapes.

A method of high-temperature casting. When encountering castings with more complex structures and greater difficulty, a die-casting machine can be used to heat the metal into a liquid state, press it into the mold, and open the mold to take out the product after cooling.

 

Forging: A process in which castings or other workpieces are struck, hammered or subjected to other pressure shocks to obtain better strength. The products obtained in this way are stronger than castings in terms of performance and strength. For example, ironmaking is a traditional forging process. The workpiece is heated to red heat (austenite is easy to deform) and then forged into shape; casting is to heat the material into "molten steel" and then inject it into the cavity; die casting is to press the "molten steel" into the cavity on a die casting machine. The same material should have a higher forging strength. Some materials will have better results if cold heading is selected.

 

Forging is also a form of casting. The difference is that the temperature during forging is lower, and some methods can make metal into finished products in a semi-molten state.

Stamping: It is to place an object of a certain shape under a stamping machine, which is equipped with a mold, and use a punch to punch out the designed product in the mold. Stamping is mainly classified by process, which can be divided into two categories: separation process and forming process. The separation process is also called blanking, and its purpose is to separate the stamped parts from the sheet along a certain contour line while ensuring the quality requirements of the separation section. Stamping is an efficient production method. With compound dies, especially multi-station progressive dies, multiple stamping processes can be completed on one press, realizing fully automatic production from strip unwinding, leveling, punching to forming and finishing. It has high production efficiency, good working conditions, low production costs, and can generally produce hundreds of pieces per minute.

 

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