What are the ball valve ball blank forging processing methods
Addtime：2023-05-22 From： View：1012
Ball valve ball is used to control the fluid flow state in the fluid transportation pipeline, because of the simple structure of the ball valve, easy installation and maintenance, good sealing performance, no internal leakage, small size and other advantages, by the market users love. Different ball valve ball blank forging processing methods are different, so what are the specific ball blank forging processing?
1. According to the temperature of the sphere blank when forged
(1) Hot forging: heating the blank to a certain temperature and then forging is called hot forging.
(2) Cold forging: Forging the blank at room temperature is called cold forging. The tonnage of forging equipment required for cold forging is large. Cold forging can obtain forgings with higher precision and strength and a smoother surface.
(3) Temperature forging: The heating temperature of the blank is less than the temperature during hot forging. It requires a smaller tonnage of equipment than cold forging, and can forge forgings with higher strength and rougher surface, which is a new process currently under development.
2. According to the force of the sphere blank
(1) Manual forging processing: relying on the blow of hand forging tool box manpower, the blank is forged into a predetermined shape of forgings on the anvil.
(2) Machine forging: relying on forging tools to make blanks into forgings on various forging equipment. Machine forging can be divided into four categories: free forging, model forging, tire membrane forging and special forging according to the different equipment and tools used:
(1) Free forging: It is a forging of a metal blank heated to a certain temperature between the upper and lower anvils of the free forging equipment, and the operator controls the deformation of the metal to obtain the expected shape.
(2) Model forging: referred to as die forging. It is a production method in which a metal blank heated to a certain temperature is placed in the mold cavity fixed on the die forging equipment and its deformation is limited, so as to obtain a forging consistent with the mold cavity.
(3) Fetal membrane forging: referred to as fetal membrane forging. It is a deformation method between free forging and die forging, and the metal blank heated to a certain temperature is heated to a certain temperature to obtain the formed forgings by passing the tire membrane that is not fixed on the free forging equipment.
(4) Special forging: It is a forging process method to form metal blanks on special equipment or in special molds. Such as precision forging, roll forging and rolling, rolling ring rolling, spiral oblique rolling, transverse rolling, extrusion forming, etc.
1. According to the temperature of the sphere blank when forged
(1) Hot forging: heating the blank to a certain temperature and then forging is called hot forging.
(2) Cold forging: Forging the blank at room temperature is called cold forging. The tonnage of forging equipment required for cold forging is large. Cold forging can obtain forgings with higher precision and strength and a smoother surface.
(3) Temperature forging: The heating temperature of the blank is less than the temperature during hot forging. It requires a smaller tonnage of equipment than cold forging, and can forge forgings with higher strength and rougher surface, which is a new process currently under development.
2. According to the force of the sphere blank
(1) Manual forging processing: relying on the blow of hand forging tool box manpower, the blank is forged into a predetermined shape of forgings on the anvil.
(2) Machine forging: relying on forging tools to make blanks into forgings on various forging equipment. Machine forging can be divided into four categories: free forging, model forging, tire membrane forging and special forging according to the different equipment and tools used:
(1) Free forging: It is a forging of a metal blank heated to a certain temperature between the upper and lower anvils of the free forging equipment, and the operator controls the deformation of the metal to obtain the expected shape.
(2) Model forging: referred to as die forging. It is a production method in which a metal blank heated to a certain temperature is placed in the mold cavity fixed on the die forging equipment and its deformation is limited, so as to obtain a forging consistent with the mold cavity.
(3) Fetal membrane forging: referred to as fetal membrane forging. It is a deformation method between free forging and die forging, and the metal blank heated to a certain temperature is heated to a certain temperature to obtain the formed forgings by passing the tire membrane that is not fixed on the free forging equipment.
(4) Special forging: It is a forging process method to form metal blanks on special equipment or in special molds. Such as precision forging, roll forging and rolling, rolling ring rolling, spiral oblique rolling, transverse rolling, extrusion forming, etc.