Molding method and mould of large nuclear-power spherical sealing head product

• Main Authors: HU CHAOBEI, DONG YI, YAN ZHIZHONG, WANG ZONGHANG, ZHAO XILIN, YANG GUANQIANG, JIA TIANYI
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2010
• Subjects: CHEMISTRY; COMBINED OPERATIONS; FORGE FURNACES; FORGING; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HAMMERING; MACHINE TOOLS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The invention discloses a molding method of a large nuclear-power spherical sealing head product. A spherical sealing head is molded through the following steps of: 1. forging; 2. processing a blank; and 3. stamping molding, wherein the stamping molding step is carried out by adopting a special molding mould. In the invention, the molding mould is adopted for molding, the surface quality of the sealing head can be greatly improved, the stamping molded wall thickness is uniform, and the generation of microcracks can not be caused by non-uniform deformation, so that the shape quality of the sealing head is better; in addition, the sealing head can be better bonded with the surface of the mould, the shape can be better trimmed, residues do not need to be added, and the shape dimension and the roundness of the sealing head are more superior. The invention also discloses a molding mould.