Diameter Seamless Pipe Production Process Analysis

Diameter seamless pipe(size of the head) is a pipe for pipe reducers at when diameter pipe stand up after two ports is projected concentric circles, it is called concentric reducer, eccentric reducer projection is the small round cut in the outer. Forming process commonly used to necking repression, expanding repression or suppression of necking plus expanding on some of the specifications of the reducers may also be stamping.Radially reduced tube diameter and the forming process is equal to the diameter of the large end diameter of the tube into the mold tube, the tube axial direction along the press, the movement of the metal and the contraction along the molding cavity according reducers Reducing the size of the tube, press-formed into one or more press-forming. expanding forming is to use less than the diameter of the big end of the tube diameter pipe with an inner diameter of the inner tube along the expanding die forming. expanding process becomes the main solution diameter is too large diameter pipe through difficult circumstances necking forming, sometimes forming materials and products according to the need, the expanding and necking method combined in necking deformation or expanding the pressing process, depending on the material and change diameter, to determine the use of cold or hot. typically, try using cold, but many serious situation caused adjustable hardening, the wall thickness of the case of partial or alloy material is preferably a hot press after addition to the use of steel as a raw material produced outside diameter pipe, tube diameter sizes of the department also uses steel plate stamping technology for production. die shape stretching inner diameter pipe used in reference to the size of the design surface, with the cutting die the stretch-forming press sheet in the enlarged or reduced in diameter during press-deformed, and adjustable depending on the material, to determine the use of cold or hot. typically, maximize the use of cold, but rather multiple adjustable circumstances cause severe hardening of the wall thickness or partial thickness alloy case material should be used hot. diameter seamless steel pipe is an important component in the common pressure piping systems, but research on the basic issues diameter pipe or blank. Through theoretical analysis and the inner surface of the internal pressure of the moment, the torque effect of concentric reducer, eccentric reducer, reducer elbow stress has been studied by finite element analysis and experimental verification is carried out.