Abstract : This paper briefly describes the development of China's forging industry technology, especially the latest development of hydraulic die forging hammer technology in hot forging equipment and its application in hot forging process of several typical parts, and describes the program-controlled full hydraulic die forging hammer in the future. Application trends in the forging industry. Key words : new development of hot forging technology I. Introduction China's accession to the WTO, market internationalization, procurement globalization will bring huge business opportunities to China's manufacturing industry, especially the automobile and aerospace manufacturing industries; the State Planning Commission and the Ministry of Science and Technology jointly issued the "priority of high-tech industrialization The Key Areas Guide has identified key industries that are prioritized in the automotive sector, mainly in the automotive parts manufacturing industry. The development direction of “small size, light weight and high speed†of the automobile industry has provided great development opportunities for the forging industry in China. 60% of the parts on the automobile are produced by the forging method. Relevant expert analysis pointed out that the automobile industry in the United States, Japan, and Germany is so developed, benefiting from the leading position of its forging technology and equipment. China's forging industry should adapt to the needs of international competition after China's entry into the WTO. It must use its high-tech to arm itself, upgrade itself, and unswervingly take the road of "precision, specialization, and modernization." The development of China's automobile industry has shown diversified tendencies, especially the development of family cars. In order to meet the requirements of different consumers, the car market has presented a pattern of multi-brand and multi-variety development, which will inevitably lead to diversification of forgings demand. In order to meet the needs of the market, the forging industry should give priority to how to make production more flexible in the past ten years, in order to meet the requirements of “timely production†in multiple varieties and small batches. Second, the technological progress of the forging industry The technological advancement in the forging industry is mainly reflected in the application of new materials, new processes and new equipment. New material applications. According to relevant information, Germany is increasingly using microalloyed steel in the production of forgings. Since the subsequent heat treatment process can be eliminated in the process, the cost of the forging is reduced, and the forged piece made of the steel is rapidly cooled immediately after the die forging, and the fine grain structure strengthened by cyanide can be obtained, thereby Determine the better mechanical properties of the forging. The lightweight of automobiles will inevitably make the application ratio of magnesium, aluminum and titanium alloys higher and higher, and the demand for non-ferrous metal forgings will become higher and higher. The forging temperature of the alloy is low, the initial and final forging temperature range is small, and the forming speed and the matching forming equipment are relatively higher than the ordinary forgings. The application of new materials has increased the requirements for forging equipment and processes, and the added value of their products is also high. According to statistics, the sales of alloy steel forgings, which account for 5% of the total forgings in the United States and Canada, account for more than 20% of the total sales of forgings. New process applications. The so-called "precision" means that a few net forming techniques are widely used, and the application of the new process achieves the goal of less chipping. Such as cross-rolling technology of rolling parts, roll forging technology; warm forging forming technology of flat-plate parts, swinging technology; multi-piece and multi-die forming technology of fork parts; powder forging forming technology of complex parts, etc. . The so-called "specialization" is the relative specialization of various types of parts manufacturing in terms of new process means. The application of the new process not only saves a lot of materials, but also improves the production efficiency and improves the internal and external quality of the forgings. The application of new equipment. Due to the promotion and application of new materials and new processes, the forming equipment compatible with it has also gained a broad space for development. Forging equipment is gradually developing towards high efficiency, high precision, high reliability and low energy consumption. China's forging industry has scattered factory sites, backward technology, and aging equipment for forging. The production capacity of ordinary die forgings is very rich, but the production capacity of precision forgings that can reach the German DIN7526E standard is obviously insufficient, and the gap with foreign countries is large. Adapting to the needs of the international market, the forging industry actively promotes the specialization of technology on the one hand; on the other hand, it must adapt to the needs of multi-variety and small-volume production in a timely manner; vigorously promote technological transformation, actively adopt new equipment, and truly realize the modernization of the forging industry. Forging enterprises go abroad and meet the only way for the world's peers to compete. 3. The position and adaptability of forging hammer in the development of modern forging industry technology Forging hammer is the pioneer of a variety of forging machines, and has a history of more than 100 years. Despite the continuous emergence of new forging and new processes and new equipment, the forging hammer still plays a very important role due to its simple structure, convenient operation, fast forming speed, strong adaptability and low investment. In particular, the emergence of program-controlled full-hydraulic forging hammers has once again revival of forging hammers in the development of modern forging industry technology. The special advantage of the hammer is that the striking speed is fast, so the contact time of the mold is short, which is especially suitable for the occasion where high-speed deformation is required to fill the mold. For example, forgings with thin ribbed plates, complex shapes and weight tolerance requirements. Due to its fast and flexible operating characteristics, its adaptability is very strong, and some people call it "universal" equipment. Therefore, it is especially suitable for the production of multiple varieties and small batches. Forging hammer is the most cost-effective forming equipment. The rapid forming characteristics of the forging hammer are not only fully utilized in the hot forging forming technology, but also have considerable advantages in the application of the cold forging forming process. According to relevant data and research experiments, the higher deformation speed can increase the degree of plastic deformation of the metal, because the deformation speed is greater than the work hardening speed, so that the material can continue to deform without breaking; at the same time, due to the metal and the mold cavity The friction coefficient decreases with the increase of the deformation speed, which makes the metal flow speed increase and is easy to be filled and formed; the higher deformation speed not only reduces the deformation resistance, but also reduces the deformation non-uniformity. The rapid prototyping properties of the forging hammer are also applicable to the powder forging process. In order to reduce the contact time between the preform and the mold surface, to avoid the workpiece from being chilled and resulting in incomplete densification, and to reduce the thickness of the surface of the forging or the low-density layer of the partial surface, the high-impact speed and high precision full-hydraulic die forging hammer can be used. Improve the deformation speed, improve the life of the mold, reduce the deformation resistance, make the preform easy to fill the mold cavity, and ensure the quality and precision of the forging. Next page Solid Valve Balls,Sealing Alloy Valve Balls,Stainless Sealing Alloy Valve Balls,Steel Alloy Valve Balls WENZHOU ZHENHONG VALVE BALL CO., LTD , https://www.zhvalveball.com