Metals are maybe one of the most important manufacturing materials in engineering or industry. They are commonly used in the production of a wide variety of products. Metal forming processes is a very important step in the production of various metal parts for various applications. Here you can find informations about;
Metal forming processes depends on the principle of the deformation of metals. Various kinds of forces, stresses, or other kinds of external effects are applied to starting forms of metal parts to obtain deformed and shaped useful metal parts.
In most metal forming applications, compressive forces are emergent. So, nearly every metal has a specific stress-strain graph in compression application on them.
These graphs include very important information related to the metal forming processes. This information is the yield strength. As you know from classical mechanics, plastic deformation starts after the stress values above the yield strength. So, the deformation characteristics of a metal forming process depend on the yield strength value of the metal that is used. Low yield strength values from metal parts are desired in metal forming processes. Force and stress applications decrease with the low yield strength values.
Ductility is also a very important material characteristic for a good metal forming process. Ductile materials are more tend to be deformed compared with brittle materials. So, ductility is a preferred metal material property in metal forming processes. If the ductility of a metal increases, forming this metal will be much easier.
Ductility and the yield strength of the metal part can be manipulated with the process temperature of the metal forming. With the increasing temperature, ductility increases, and the yield strength decreases. Because of that, heat application in metal forming processes is very common.
Metal forming processes are divided into two categories; Bulk deformation and Sheet metalworking. This classification is made in terms of the area per volume of the metal part that is being worked.
As you understand from the name that the work ‘bulk’ refers to the metal parts that area per volume is small. There are various kinds of processes available in bulk deformation.
Again you understand from the name, the term ‘sheet’ is used for the metal parts that area per volume values are high. Mechanical presses are generally used in sheet metalworking processes. Because of this reason, these processes are also called press-working. Stamping is another term that used for the produced metal parts in sheet metalworking processes. There are a bunch of metal forming and working processes developed.
This is the general information about the metal forming processes.
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