When spinning various thin-walled cross-section products, the main purpose of spinning is to change the shape of the slab, and the thickness of the slab changes little. This type of spinning is called ordinary spinning. The basic methods of ordinary spinning are: deep drawing spinning (drawing spinning), shrinking spinning (shrinking spinning) and expansion spinning (expanding spinning). What Is Deep drawing spinning Drawing spinning is a forming process that uses radial drawing as the main body to reduce the diameter of the blank (sheet or prefabricated part). It can also be said that it is similar to deep drawing, but it uses a core mold instead of a punch, and a spinning wheel instead of a die. It is the most Read more
Metal spinning, also known as spin forming or metal turning, is a metalworking process that dates back several centuries. It involves rotating a metal disc or tube on a lathe and shaping it using various tools to form axially symmetric parts. This traditional technique has been transformed significantly with the advent of Computer Numerical Control (CNC) technology, leading to the modern process known as metal CNC spinning. Metal CNC spinning combines the precision of CNC machining with the traditional art of metal spinning. This advancement has revolutionized the manufacturing of symmetrical metal parts, allowing for greater accuracy, repeatability, and efficiency. The invention and evolution of metal CNC spinning is a fascinating story that intertwines with the broader development of metalworking Read more
Molybdenum crucibles are essential containers used in rare earth smelting furnaces, quartz continuous melting furnaces, and sapphire single crystal growth furnaces. The quality of molybdenum crucibles directly affects the quality of sapphire single crystals, especially in sapphire single crystal production. With the increasing demand for high-quality sapphire single crystals due to the growth of the LED industry, the requirements for molybdenum crucibles have become more stringent. Traditional methods of producing molybdenum crucibles cannot meet the growing demand. This study introduces spinning processing as a new technical approach to address the challenges of producing molybdenum crucibles. High-Temperature Processing: Due to the poor plasticity of pure molybdenum material, spinning processing cannot be completed at room temperature. High-temperature tensile tests show that pure Read more
Recently, an expert team from the China Aerospace Corporation’s First Academy, Factory 211, conducted a preliminary acceptance review of the CZ3000/2 CNC spinning machine produced by the Seventh Academy’s Factory 7102. This machine is the largest spinning processing machine independently developed in China. It is capable of forming cylindrical, conical, hemispherical, and other curved-line parts from materials such as aluminum alloys, stainless steel, and zirconium oxygen-free copper, meeting specific product process requirements for both cold and hot spinning. The equipment weighs 110 tons, with a maximum single-wheel spinning pressure of 400 kN and a maximum processing diameter of 3 meters. The machine features good stability, ease of operation and maintenance, and reliable safety. It is the first device to utilize Read more
In July this year, the Lu Wei aluminum wheel hub production line, with a total investment of over 1 billion yuan, began trial operation in Fuzhou, Jiangxi. This is the first digital, continuous, and automated forging aluminum wheel hub production line in China and abroad, marking the industrialization stage of the Demma “Four-Dimensional Manufacturing” project, which has undergone 8 years of research and development. “Four-Dimensional Manufacturing” is an advanced method based on the traditional three-dimensional manufacturing, introducing new mechanical considerations through force counteraction and balance principles to form the “Four-Dimensional Manufacturing” working method. By innovating and transforming traditional equipment such as forging presses, “Four-Dimensional Manufacturing” effectively achieves energy saving, emission reduction, and green manufacturing. For example, in the aluminum wheel Read more
