Explanation

The process of fixing flat or pre formed wool onto one end of a rotating core mold, and using a spinning wheel with a certain edge shape to pressurize the blank. The spinning wheel can perform axial and radial movements, and after one or multiple processing, various shapes and wall thicknesses of hollow rotary products can be obtained. The contact area between the roller and the blank is very small. materials only has local plastic deformation, and the force is small. Large products can be processed with small tonnage equipment. It is an effective method for manufacturing precision products such as hollow cones, cylindrical parts, cup shaped parts, hemispherical bodies, and thin-walled pipes. spinning products have high precision, good mechanical properties and wide size range. The mould of spinning is simple, easy to replace and low in production cost. The disadvantage is long production hours and low output. Suitable for small batch and multi variety production. spinning can be used for processing nonferrous metals, rare metals and steel. It can manufacture various shells for daily necessities, chemical containers, machine parts, rockets, missiles, and spacecraft. According to the deformation characteristics of metal, it can be divided into ordinary spinning and powerful spinning. In ordinary spinning, the wall thickness and surface area of the blank are basically unchanged, only the shape of the blank is changed. It is mainly used for spinning various thin-walled aluminum, copper, stainless steel and other daily necessities. Powerful spinning. The shape and wall thickness of the blank change. When the conical part is forced spinning, the movement of the metal conforms to the sine law, which is a pure shear deformation. Used for producing conical and hemispherical parts with equal and variable wall thicknesses. The wall thickness of the tubular blank decreases and the length increases when the tubular part is strongly spun. Used for producing thin-walled seamless pipes, cup-shaped bodies, etc. According to spinning, temperature can be divided into cold spinning, warm spinning and hot spinning. The largest spinning machine can spinning parts with a diameter of 6m.

Classification