Recently, China's newly developed TMH20/15MN large radial precision forging machine was successfully tested at one heat load, and the first qualified high-end bar was forged. The successful test of the radial precision forging machine marks that the core manufacturing equipment of high-end pipe in China will no longer be easily "card neck"! However, this also means that China has successfully broken one of the technical barriers that have long been completely monopolized by foreign countries - large radial precision forging machine preparation technology!

Why is this technology breakthrough so important? Because the maximum forging force of China's latest TMH/15MN large radial precision forging machine (free forging and radial precision forging) is 15MN (1500t), suitable materials include stainless steel, alloy steel and high temperature alloy. Meet the needs of different applications such as military and nuclear power. Previously, the large radial precision forging machine technology with forging force higher than 10MN has been monopolized by a few foreign manufacturers such as German SMS. Moreover, large radial precision forging machines that meet the requirements for high-end pipe manufacturing such as barrels and nuclear power pipes have been monopolized by an Austrian company. The price of a large radial precision forging machine is hundreds of millions of euros. And due to extremely limited production capacity and other reasons, it is not possible to fully supply in time. Therefore, it is a great news for China to make a big breakthrough in the core equipment required for high-end pipe production.

In order to better understand the importance of this technology, we must first know what is a large radial precision forging machine? First, we have to know that large radial precision forging machines are one of the core equipment for high-end pipe manufacturing. The so-called large radial precision forging machine is a radial forging machine that is continuously developed under the development of materials and product quality requirements, and the precision is continuously improved. It is mainly used for forging bars for high-end pipes, and also for tungsten. Forgings of special alloys such as molybdenum and zirconium alloys. Among them, these bars for high-end pipes are usually high-strength steels with reinforcing elements such as tungsten and molybdenum. What can high-end pipe do?

When it comes to large radial precision forging machines, it has to be said that radial forging. Radial forging is developed on the basis of the traditional free forging and drawing process. It refers to the rapid synchronous forging of the bar stock by 2~4 hammers distributed in the circumferential direction when the bar is forged. In the forging process, the required forging force is large (the forging force is generally required to be above 10 MN), and the forging frequency (usually 200-2000 times/min) also has a relatively high requirement. In order to meet the large forging force, the required moment of inertia of the hammerhead must be relatively large, which means that the performance of the hammerhead itself is relatively high, and it requires greater hardness and strength. The material used in the hammerhead should be able to meet its performance requirements. These hammers are usually made of cemented carbide with high strength and high hardness. Moreover, to forge high-strength steel bars with elements such as tungsten or molybdenum, it is also necessary to use a cemented carbide having a hardness higher than that of the bar material to meet the requirements. In addition, the forging process has a higher temperature requirement, and the cemented carbide can withstand high temperatures.

Of course, the large radial precision forging machine, as one of the core equipment for high-end pipe manufacturing, requires a hard alloy hammer to “knock” high-end bars, and also requires motion control technology based on hydraulic servo system, high rigidity and high stability. Swivel chain technology and special CNC system with multi-axis coordination and real-time motion track control to meet the precise control of the trajectory of the large inertia parts of the hammer and the action mechanism, and the forging force of the forging force during high-frequency forging It still keeps the smooth running of the whole system and coordinates the requirements of hammer action and machine feed.

China's advantages in tungsten, molybdenum and rare earth resources make it easier to obtain raw materials for the production of high-end equipment such as large radial precision forging machines. In addition, China has now broken through the "card neck" of large radial precision forging machine preparation technology. This means that the cost of producing this equipment is lower than in foreign countries. In other words, our high-end equipment has a competitive advantage over foreign-produced equipment while breaking the monopoly.

More importantly, the new large radial precision forging machine can be used to manufacture barrels with better performance. Now, after the breakthrough in the preparation technology of large radial precision forging machine, China has completely mastered a complete set of barrel manufacturing technology. At this point, when China's tank guns have the same caliber as other countries, the rolling pressure, life and shooting accuracy will be better than other countries. Moreover, we also have environmentally friendly high-performance tungsten alloy armor piercing projectiles. In a word, that is, under the blessing of large radial precision forging machines, the power of China's 99-type main battle tanks, 99A main battle tanks and other tank guns will be greatly improved, and, under the dual advantages of resources and technology, China The tank became the "king of the land war" just around the corner.

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