Bending Machine forging machinery techniques and technologies

Bending Machine Forging is used to put pressure on the metal billets to produce plastic deformation, to obtain a certain mechanical properties, a certain shape and size of the forging of the processing methods. Forging and stamping are both the nature of plastic processing, collectively forging. Forging is commonly used in forming machinery manufacturing methods. Eliminate the metal by forging cast loose, welding holes, the mechanical properties of forgings generally better than the same materials the castings. Machines with high load, severe working conditions, the important parts, in addition to the shape of the available simple rolled sheet, profiles or welded parts, the multiple use of forgings.
Bending Machine forging billets in the processing time according to the temperature can be divided into cold and hot forging. Cold forging process is generally at room temperature, forging a billet of metal above the recrystallization temperature of the process. Sometimes also in a heated state, but the temperature does not exceed the recrystallization temperature for the forging as warm forging. However, this division in production is not entirely uniform.

Recrystallization temperature is about 460 ℃, 800 ℃, but generally used as a demarcation line, higher than 800 ℃ is Hot; at between 300 ~ 800 ℃ as warm forging or semi-hot forging.
Bending Machine forging press forming method can be divided into free forging, die forging, cold forging, radial forging, extrusion, forming rolling, roll forging, rolling and so on. Billets produced by deformation under pressure from external constraints is called the basic freedom of forging, also known as open forging; other methods of deformation forging dies are subject to the restrictions, called the closed mode of forging. Forming rolling, roll forging, rolling and other forming tools and billets relative rotation between the movement of the billet-by-point, the asymptotic pressure, and forming, it is also known as rotary forging.
Bending Machine forging material is mainly of various components of Carbon and Alloy Steel, followed by aluminum, magnesium, copper, titanium and its alloys. Material to its original state with bar, ingot, metal powder and liquid metal.
Small forgings are generally round or square bar used as a blank. Bar grains and uniform mechanical properties, good, accurate shape and size, surface quality, easy to organize mass production. As long as the reasonable control of heating temperature and deformation conditions, no large forging forging can produce high quality forgings.
Ingot used only for large forgings. Ingot is cast, there is a large columnar grains and loose center. Therefore, a large plastic deformation must be broken to fine columnar crystal grain, the loose compaction, to get good metal structure and mechanical properties.
The repression and sintered powder metallurgy preform, in the hot state by forging without flash can be made of powder forging. Powder forging die forging close to normal density, good mechanical properties, and high precision machining can reduce the follow-up. Powder forging internal organization of the uniform, not segregation, can be used in the manufacture of small gears and other parts. However, the price of powder is much higher than normal bar prices, the production has limited application.
On pouring the liquid metal in the mold chamber to exert static pressure, so that solidification under pressure, crystallization, flow, plastic deformation and shape, you can obtain the required shape and properties of die forgings. Between liquid metal die casting and forging die forging is formed between the methods, especially suitable for forming the general complexity of forging difficult to thin pieces.
The forging of different methods in different processes, including hot forging process with the longest general order: Forging blanking; forging heating; roll forging equipment blank; die forging; trimming; intermediate test, test forging The size and surface defects; forging heat treatment, forging to eliminate stress, improve metal cutting; clean up, mainly to remove the surface oxide; correction; inspection, the general appearance and hardness of forging checks to go through, it is important to go through the chemical composition forging analysis, mechanical properties, residual stress and other testing and nondestructive testing.
Related Keywords: Plate Bending Machine  Bending Rolls Machine  Bend Machine Roll