P11 reducer

The material of P11 reducer is low alloy heat-resistant steel,. It is used for the connection between two pipes with different diameters. According to the difference of appearance, it can be divided into two types: one is the same size head, and the other is the preference size head. It is easy to understand that the middle point of the circle at both ends of the pipe is on the same straight line, which is called the concentric reducer, otherwise, it is called preference for the reducer

P11 reducer is a kind of pipe fitting used at pipe reducer. The commonly used forming processes are necking pressing and necking expanding pressing, and some reducers can also be formed by stamping; The necking and pressing forming of reducing pipe is to put the pipe blank with the same outer diameter as the big end of reducing pipe into the forming die, and press along the direction of the blank axis to make the blank move along the cavity of the die and shrink to form. According to the size of reducing pipe bending, it can be divided into one-time pressing forming and multiple pressing forming; Neck expanding and pressing is to adopt the blank smaller than the outer diameter of the large end of the reducer, and use the internal pressure die to expand the neck along the inner diameter of the blank. The neck expanding processing method is mainly used to solve the problem that reducing pipes with large reducing diameters are not easy to pass necking processing. Sometimes, neck expanding and necking are used together according to the processing needs of materials and products. The cross section of a polygonal polygonal polygonal toroidal shell or the shape of a polygonal fan sealed at both ends shall be welded first. After the inside is filled with pressure medium, internal pressure shall be applied. Under the influence of internal pressure, the polygon of the cross section shall be gradually brewed into a circle and finally become a circular toroidal shell. The process of reducing and forming the reducer is mainly a kind of tube blank with the same diameter as the large end of the reducer, which is directly placed in the forming die. Later, it can be pressed along the operation axis of the tube blank, so that the metal can move directly along the die cavity to shrink and form. It can also be changed according to the size of the reducer, It can be directly divided into one press forming process or multiple press forming processes