And the function of flange effect

　　Flat welding flange forging can be divided into free forging, upsetting, extrusion, forging, closed die forging, closed upsetting. Flat welding flange forging can be divided into free forging, upsetting, extrusion, forging, closed die forging, closed upsetting. Closed die forging and closed upsetting because there is no flash, material handling rate is high. A process or procedure is outlined for finishing large forgings. Because there is no fly side, the force area of the forging is eliminated, the required load is also eliminated. But should be detailed to not make stock completely restricted. To do this it is necessary to strictly control the blank volume control forging die of relative position and of the forgings are measured and cheerful out of die wear.

　　According to the work style of forging die, forging can be divided into rotary pendulum, rotary forging, roll forging, rolling, rolling and rolling etc.. Rotary forging, rotary forging and rolling pendulum ring forging process is also available. In order to manipulate the rate of advance materials, roll forging and rolling can be made long before processing. The same as the free forging of the torsion of the forging is also part of the shape, it is the interests of forging size and forging force smaller case can also be realized. Collecting free forging, forging style, processing materials from the mold surface around to the general situation of free expansion is, it is difficult to ensure the accuracy, so will die of activities subject to and rotary forging process using computer control, can lower the forging force obtained huge shape, high accuracy products. For example, the production of many varieties, large size of the turbine blade forging.

　　The main function of flange is:

　　1, connect the pipeline and make the pipeline to maintain good sealing performance;

　　2, if a section of the pipeline problems, to facilitate the replacement of a section of the pipeline;

　　3, the pipeline malfunction, easy to disassemble detection.

　　Flange heat function: when working temperature is 70 degrees, the softening temperature of 140 degrees.

　　1, high impact resistance: because of the unique strength of the impact strength than other solid wall tube has significantly improved, the ring stiffness commensurate with the wall of 1.3 times.

　　2, long service life: the tube in the rated temperature and pressure, the service life of more than 50 years, with UV, radiation, so that products will never fade.

　　3, resistance to erosion, except for a few hydrogenating agent, corrosion resistant to a variety of chemical medium and the flange has excellent acid resistance, alkali resistance, resistance to erosion, will not rust, no erosion, no bacteria, no electrochemical corrosion.