Methods and applications of precision forging

Precision forging and forming technology (net forming) refers to the part forging and forming layer, only a small amount of processing or no further processing to meet the requirements of the part forming technology. Precision forging and forming technology is an important part of advanced manufacturing technology, but also automotive, mining, energy, construction, aviation, aerospace, weapons, and other industries in the widely used parts manufacturing process. Precision forging and forming technology not only saves materials and energy, but also reduces processing procedures and equipment, and significantly improves productivity and product quality, reduces production costs, thus improving the market competitiveness of products.
Precision forging process methods
Currently has been applied to the production of precision forging process a lot. According to the forming temperature can be divided into hot precision forging, cold precision forging, temperature precision forging, composite precision forging, and isothermal precision forging.
1.1 hot precision forging process
Forging temperature in the recrystallization temperature above the precision forging process is called hot precision forging. Hot precision forging material deformation resistance is low, has good plasticity, easy to form a more complex workpiece, but due to strong oxidation, workpiece surface quality and dimensional accuracy are low. Hot precision forging process commonly used for closed die forging.
1.2 Cold forging process
Cold precision forging is a precision forging process at room temperature. Cold precision forging process has the following characteristics: the shape and size of the workpiece is easier to control, to avoid errors caused by high temperature; workpiece strength and high precision, good surface quality. Cold forging forming process towel, poor plasticity of the workpiece, deformation resistance, the mold and equipment requirements of the business, and it is difficult to form complex structural parts.
1.3 warm precision forging process
Temperature precision forging is in the recrystallization temperature below a suitable temperature for the precision forging process. Temperature forging precision forming technology not only breaks through the cold forging in the deformation resistance, but the shape of the part can not be too complex, the need to increase the intermediate heat treatment and surface treatment of the limitations of the step, but also overcome the hot forging due to the strong oxidation and reduce the surface quality and dimensional accuracy of the problem. It also has the advantages of cold forging and hot forging, to overcome the shortcomings of both.
1.4 Composite Precision Forging Process
With the increasing complexity of precision forging workpieces and precision requirements, simple cold, warm, and hot forging processes can not meet the requirements. The composite precision forging process will be a cold, overflow, hot forging process for sewing together to complete the forging of a workpiece, can play cold, warm, hot forging advantages, and abandon cold, warm, hot forging shortcomings.
1.5 isothermal precision forging process
Isothermal precision forging refers to the billet tendency to a constant temperature under the die-forging forming. Isothermal die forging is commonly used in the aerospace industry in titanium alloys, aluminum alloys, magnesium alloys, and other difficult-deformed precision forming of material, in recent years, also been used in the automotive and mechanical industry non-ferrous metal precision forming. Isothermal forging is mainly used in forging temperatures in narrower metal materials, especially for the deformation temperature that is very sensitive to the titanium alloy.
Second, the application of precision forging
1. Production of refined blanks and precision die forging parts will be refined to get finished parts.
2. Production of precision die forging parts, precision forging forming the main part of the parts, eliminating cutting, while some parts of the parts still need a small amount of cutting.