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According to the way of moving the blanks, forging processing can be divided into free forging, rough, extrusion, die forging, closed forging, closed forging. Closed-mode forging and closed-mold forging are highly utilized because there are no flying edges. The finishing of complex forgings can be done with one or several operations. Since there is no flying edge, the force area of the forging is reduced and the required load is reduced.

However, it should be noted that the blank material can not be completely restricted, for this reason, we should strictly control the volume of the blanks, control the relative position of the forging mold and the measurement of forgings, and strive to reduce the wear of the forging. According to the way of movement of forging mold, forging processing can be divided into swing, swing forging, roller forging, wedge cross-rolling, twisting ring and oblique rolling and so on. Swings, swing forgings and rings can also be processed with finishing. In order to improve the utilization rate of the material, roll forging and cross-rolling can be used as front process processing of slender materials. The same rotary forging as free forging is also partially formed, and its advantage is that compared with the forging size, forging processing force is small can also be achieved. This forging processing method, including free forging, when processing materials from near the mold surface to the free surface, so it is difficult to guarantee accuracy, so the forging direction and rotary forging process with computer control, can be used with lower forging processing force to obtain complex shape, high precision products.

For example, the production of a variety of large-size steam turbine blades and other forgings The blanks are deformed and hardened during cold forging, so that the forging mold sits on a high load, so that high-strength forging soldering and hard lubrication film treatment methods to prevent wear and bonding are required. In addition, in order to prevent blank cracks, when needed to carry out intermediate annealing to ensure the required deformation capacity. In order to maintain a good lubrication state, the blanks can be phosphated.

In the continuous processing with rod material and disc, the section can not be lubricated at present, the possibility of using phosphating lubrication method is being studied. According to the way of moving the blanks, forging processing can be divided into free forging, rough, extrusion, die forging, closed forging, closed forging. Closed-mode forging and closed-mold forging are highly utilized because there are no flying edges. The finishing of complex forgings can be done with one or several operations. Since there is no flying edge, the force area of the forging is reduced and the required load is reduced.

However, it should be noted that the blank material can not be completely restricted, for this reason, we should strictly control the volume of the blanks, control the relative position of the forging mold and the measurement of forgings, and strive to reduce the wear of the forging. According to the way of movement of forging mold, forging processing can be divided into swing, swing forging, roller forging, wedge cross-rolling, twisting ring and oblique rolling and so on. Swings, swing forgings and rings can also be processed with finishing. In order to improve the utilization rate of the material, roll forging and cross-rolling can be used as front process processing of slender materials. The same rotary forging as free forging is also partially formed, and its advantage is that compared with the forging size, forging processing force is small can also be achieved. This forging processing method, including free forging, when processing materials from near the mold surface to the free surface, so it is difficult to guarantee accuracy, so the forging direction and rotary forging process with computer control, can be used with lower forging processing force to obtain complex shape, high precision products.

For example, the production of many varieties, large size of steam turbine blades and other forgings.

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