P5 elbow

There are many methods in the processing of P5 elbow. To a certain extent, it can be divided into roll bending, press bending, push bending and bypass bending according to the bending forming method. It can be divided into die bending and die free bending according to whether the die is used during bending; The bending can be divided into core bending and non core bending according to whether there is a mandrel during bending, and can be divided into cold bending and hot bending according to whether there is heating during bending. In recent years, new bending processes such as zero radius bending, medium frequency induction bending, thermal stress bending and laser forming bending have also emerged

P5 bend processing is mainly a method of bending pipes with three rollers. Rolling bending has certain requirements for bending radius, which is very suitable for thick wall pipe fittings with large curvature radius, but it is powerless for small radius bending. The roll bending method and working principle are basically the same as that of plate roll bending, except that the roll used for tube roll bending has a working surface consistent with the cross section shape of the tube blank. When bending, it is only necessary to change the spacing between the master and slave rollers to achieve bending of various curvature radii. The roller is the driving wheel and the other two are the driven wheels. This method is especially suitable for bending annular or spiral pipe fittings

P5 bend shall be processed according to relevant standards and regulations, and no instability is allowed no matter what height the bend is processed to. The materials used for processing elbows shall be the qualified elbows with deformation, crack and other defects, and the use of fasteners and fasteners is strictly prohibited. The fasteners and connectors of elbows shall not be used carefully by welding

The foundation ground for P5 elbow processing shall be flat, hard and compacted, and its metal base plate shall be flat without any deformation. When the ground is relatively soft, it is necessary to use a bottom broom or base plate to increase the stress surface and stability. The springboard on the elbow shall be laid neatly with consistent width and length (except for special parts). The springboard on any elbow shall be firmly fixed, and there shall be no large holes on the platform (except for special parts)