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Forging Process
Created on 01.04
Injection Molding Process Flow
Forging is a metalworking process that employs hammering or pressure to induce plastic deformation in metal, thereby achieving the desired shape and dimensions. This technique holds significant importance in mechanical engineering, aerospace, automotive, and other industries. This article will outline the fundamental forging process, providing you with a deeper understanding of this technology.
I. Material Selection
Prior to forging, it is essential to select suitable metallic materials. Based on the functional requirements of the component, choose metals with good plasticity and appropriate mechanical properties, such as carbon steel, alloy steel, stainless steel, aluminum, or copper.
II. Cutting
Cutting refers to the process of trimming raw materials to the required dimensions and shapes. Common cutting methods include shearing, sawing, and oxy-fuel cutting. The purpose of cutting is to reduce the volume of metal materials, thereby facilitating forging.
III. Heating
Heating involves raising the temperature of cut metal materials to a specific level, thereby imparting good plasticity to facilitate forging. Heating methods include flame heating, resistance heating, and induction heating. The heating temperature is determined according to the material type and forging requirements.
IV. Forging and Forming
Forging is the core process of metalworking, encompassing the following fundamental operations:
Hammering: The process of striking metal with a forging hammer to induce plastic deformation.
Die forging: The process of placing metal into a die and applying pressure to force it to fill the die cavity, thereby achieving the desired shape.
Drawing: The process of inducing axial plastic deformation in metal through drawing, thereby altering its length and cross-sectional shape.
Rolling: The process of applying pressure to metal using rollers to induce radial plastic deformation.
V. Cooling
Following the completion of forging, the forged piece must be cooled to eliminate internal stresses and stabilise its dimensions. Cooling methods include water cooling, air cooling, and oil cooling.
VI. Heat Treatment
Heat treatment is employed to enhance the mechanical properties of forgings, such as improving strength, hardness, and toughness. Common heat treatment methods include annealing, normalising, quenching, and tempering.
VII. Cleaning and Inspection
Following the completion of forging, the forgings must undergo cleaning to remove scale, burrs, and other impurities. Subsequently, the forgings are subjected to inspection regarding dimensions, shape, mechanical properties, and other aspects to ensure product quality.
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