Gravity casting
Refers to the process in which molten metal is poured into the mold under the action of the earth's gravity, also known as casting. Gravity casting in a broad sense includes sand casting, metal casting, investment casting, lost foam casting, mud casting, etc.; gravity casting in a narrow sense refers to metal casting.
Gravity die casting refers to the process of injecting molten metal into the mold under the action of other external forces (excluding gravity). Die casting in a broad sense includes pressure casting of die casting machine and vacuum casting, low pressure casting, centrifugal casting, etc.; pressure casting in a narrow sense refers to metal type pressure casting of die casting machine, referred to as die casting. The precision casting factory has been engaged in gravity casting of sand mold and metal mold for a long time.
These casting processes are the most commonly used in non-ferrous metal casting, and they are also relatively cheap. Sand casting is a traditional casting process that uses sand as the main molding material to make molds. Sand molds generally adopt gravity casting, and low-pressure casting, centrifugal casting and other processes can also be used when there are special requirements.
Die casting
Die casting is a special casting in casting. By pouring molten or semi-molten metal into the pressure chamber of the die-casting machine, under the action of high pressure, the molten metal is filled in the cavity of the die-casting mold at a high speed, and the molten or semi-molten metal is cooled under high pressure A high-efficiency, high-efficiency precision casting method that obtains castings by solidification. Compared with traditional casting, the same place is: both are by pouring molten or semi-molten metal into the mold, and then cooling and solidifying by cooling the metal to obtain the required parts.
CNC Machining
Referred to as machining, refers to the process of accurately removing excess material from the blank through traditional mechanical processing in accordance with the shape and size requirements of the drawing, so that the blank meets the shape and position tolerances required by the drawing.
Modern mechanical processing is divided into two categories: manual processing and numerical control processing.
Manual processing refers to the operator operating lathes, milling machines, grinding machines and other mechanical equipment to perform precise processing on workpieces, which is suitable for single-piece and small-batch parts production;
While numerical control processing is the operator sets the programming language for the CNC equipment, and the CNC controls the axis of the CNC machine tool to automatically process according to the requirements by recognizing and interpreting the programming language, which is suitable for the processing of parts with large quantities and complex shapes.
The specific processes of mechanical processing mainly include turning, milling, grinding, clamping, drilling, boring, planing, punching, sawing, as well as electroplating, heat treatment, wire cutting, forging and other methods.
