Application fields and specific cases of cold forging technology
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- Time of issue:2021-09-02
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(Summary description)Cold forging refers to placing a metal blank into a die cavity in a cold state, and under the action of a strong pressure and a certain speed, the metal is forced out of the die cavity to obtain the desired shape, size and certain mechanical properties. pieces. Clearly, the cold forging process relies on the die to control the flow of metal and the mass transfer of the metal volume to form the part. It is an important part of precision plastic volume forming technology.
Application fields and specific cases of cold forging technology
(Summary description)Cold forging refers to placing a metal blank into a die cavity in a cold state, and under the action of a strong pressure and a certain speed, the metal is forced out of the die cavity to obtain the desired shape, size and certain mechanical properties. pieces. Clearly, the cold forging process relies on the die to control the flow of metal and the mass transfer of the metal volume to form the part. It is an important part of precision plastic volume forming technology.
- Categories:Info-Center
- Author:
- Origin:
- Time of issue:2021-09-02
- Views:0
Introduction to Cold Forging Technology
Cold forging refers to placing a metal blank into a die cavity in a cold state, and under the action of a strong pressure and a certain speed, the metal is forced out of the die cavity to obtain the desired shape, size and certain mechanical properties. pieces. Clearly, the cold forging process relies on the die to control the flow of metal and the mass transfer of the metal volume to form the part. It is an important part of precision plastic volume forming technology.
Application fields of cold forging technology
Cold forging technology has been widely used in fasteners, machinery, instrumentation, electrical appliances, light industry, aerospace, shipbuilding, military and other industrial sectors, and has become one of the indispensable and important processing methods in metal plastic bulk forming technology. In addition, the emergence of new extrusion materials, new steel dies and large-tonnage presses has also expanded its development space.
Case 1: Application of cold forging in precision gear forming
When the outer diameter of the cylindrical gear is larger than the tooth width, it is difficult to form the cylindrical gear by traditional cold forging. When closed forming is used, defects will occur at the tooth ends due to the influence of high flow resistance. Therefore, in order to obtain high-precision and high-quality tooth profiles, a multi-process method must be adopted, that is, the gear parts must be formed multiple times to meet the quality requirements. The compound action closed forming method using mandrel exchange is an effective method for cylindrical gear forming. The so-called compound forming refers to the extrusion forming process composed of two or more die actions or movements on the same station. Since it is completed in the same station, the work efficiency is high and the molding quality is guaranteed.
Cold forging steps
a. Put the gear blank into the cavity to work;
B. The mold is closed. In one stroke of the slide, the mold is closed by the upper and lower molds
c. Pre-formed one-time forming gear
d. After the pre-forming of the mandrel is completed, the slider stops moving, and the lower mandrel pushes the upper mandrel out of the cavity under hydraulic pressure to complete the mandrel change.
E. At this point in the final molding, the slider of the press is lowered for the second time to complete the molding
F. Ejecting the workpiece The ejection of the workpiece is realized by pushing the ejector rod by the ejector hydraulic cylinder of the press.
The impact of cold forging technology on enterprise development
Cold forging technology is an advanced production technology with high precision, high quality and low consumption, which is widely used in the mass production of small and medium forgings. Compared with hot forging and warm forging, it can save material by 30%~50%, save energy by 40%~80%, improve forging quality and improve working environment.
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Relevant information
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Non-ferrous metal forging process
Forging is one of the methods of non-ferrous metal pressure processing and a link in machinery manufacturing. According to the different temperature states of metal materials during forging and working, forging can be divided into hot forging, warm forging and cold forging. - Application fields and specific cases of cold forging technology 09-02
- Causes of cracks in precision forgings 09-02
- Description of materials and processes suitable for cold forging 09-02
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