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
Metal spinning, a metalworking process that dates back centuries, has found its place in various industrial applications due to its efficiency, cost-effectiveness, and ability to produce high-quality parts. One area where metal spinning excels is in the production of roof drains. This article explores why metal spinning is the optimal choice for roof drains this season, delving into the process itself, its benefits, and its application in roofing systems. History of Metal Spinning Metal spinning, also known as spin forming or spinning, is a process that involves the shaping of metal over a rotating mandrel to create axially symmetric parts. This technique has been used for centuries, with origins tracing back to ancient Egypt and China. The process has evolved Read more
Metal spinning, also known as spin forming or spinning, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. Historically significant, the process has evolved significantly with advancements in technology, leading to the development of new techniques and applications in various industries. This article provides a comprehensive exploration of metal spinning, covering its history, principles, techniques, materials, equipment, applications, and recent technological advancements. Historical Background Metal spinning has roots that trace back to ancient civilizations, where artisans used simple tools to shape metals into functional objects. Early evidence suggests that metal spinning was practiced in ancient Egypt and China, where metals such as gold, silver, and Read more
In the world of automotive and aerospace engineering, the debate over the most effective and efficient methods for producing wheel hubs is ongoing. Two primary manufacturing techniques stand out: CNC spinning and precision forging. Each method offers unique benefits and poses specific challenges, making them suitable for different applications and industries. This article delves deep into the intricacies of both CNC spinning and precision forging, comparing their processes, advantages, drawbacks, and real-world applications. Understanding Wheel Hubs Wheel hubs are a fundamental component in the wheel assembly of vehicles. They serve as the mounting point for the wheel and the interface for the brake rotor or drum. Wheel hubs house the wheel bearings, facilitating smooth rotation and supporting the vehicle’s weight. Read more
The agricultural industry is the backbone of many economies around the world, providing food, raw materials, and employment to billions of people. As the industry evolves, the need for more efficient, durable, and specialized equipment becomes paramount. Custom metal products have emerged as a vital component in addressing these needs. This article explores the numerous benefits of custom metal products in the agricultural industry, examining their impact on efficiency, durability, innovation, and overall productivity. Enhanced Durability and Longevity One of the primary advantages of custom metal products in agriculture is their enhanced durability and longevity. Agricultural operations often involve exposure to harsh environmental conditions, including extreme temperatures, moisture, and mechanical stress. Custom metal products, tailored to specific agricultural needs, are Read more
Metal spinning, a versatile manufacturing process, has found widespread applications across industries ranging from aerospace to household goods. One critical aspect influencing the performance and quality of metal spun parts is thickness tolerance. Understanding the nuances of thickness tolerances by application is paramount for achieving desired outcomes in terms of functionality, durability, and aesthetics. In this comprehensive guide, we delve into the intricacies of metal spinning thickness tolerances across diverse applications. From automotive components to architectural elements, we examine how varying tolerances impact the performance and suitability of spun metal parts. Automotive Industry In the automotive industry, where precision and reliability are paramount, metal spinning plays a crucial role in the fabrication of components such as exhaust systems, wheel rims, Read more
Spin forming is a special method of metal plastic forming, where the principle lies in securing the blank on the mold, which, together with the blank, spins at high speed. The outer spinning wheel applies significant pressure to the blank, causing the metal blank to deform, ultimately forming a part identical in shape to the mold. Spin forming can be categorized into ordinary spin forming and strong spin forming. Ordinary spin forming refers to a process where the shape of the blank changes during forming, while the thickness remains constant. This type of spin forming has been around for a long time and finds widespread use in civilian applications such as utensils, tableware, and some parts with low precision requirements. Read more
