Query machine
Aviation flying through the sky and deep-sea probes are indissociable from high-intensity, corrosive titanium alloys. However, titanium alloys are highly oxidized and susceptible to contamination, and some high-end equipment's large-sized components are more likely to have to be formed as a whole at once in order to ensure the structural integrity and performance of the components and to avoid the potential hazards of welding。
In order to address the difficulties posed by the integration of large-scale titanium alloy structures in the country, the state air group enterprise shenyang vacuum technology research institute ltd., with the dedicated support of the ministry of industry and information technology in 2020, launched an attack on key technical difficulties in the melting of large-tonne vacuum condensers, and gradually developed the design of equipment consolidation units, critical systems and key components, successfully developing the country's largest vacuum arc condensator in 2023 and achieving industrial applications. The condensation furnace, which has a melting capacity of 2. 5 tons (in terms of titanium metal), can be used for large-sized high-performance titanium alloy structural units as a whole, and the composite indicator has reached an internationally advanced level, filling the gap in the country's industrial parent equipment of this type and effectively guaranteeing the autonomous control of our advanced manufacturing technology and core process equipment。
01
What's a vacuum arc condenser
Vacuum arc condensers are special equipment for metal smelting and casting in a vacuum environment by arc heating, consisting mainly of furnaces, smelting systems, water cooling, casting agencies, vacuum systems and control systems. The rationale for this work is to use large current arcs in a vacuum environment to bomb the metal raw materials quickly to melt them. Metal fluids form a condensed thin shell (i. E. "condensed shell") within the walls of aqueous copper plume to prevent further contact with the plume. When the smelting is completed, the metallic smelt is quickly poured into the pre-fabricated mould and the casting is quickly refilled using centrifugal casting press。
The whole smelting process is carried out in a vacuum environment, eliminating possible contamination. This process is particularly suitable for high-activity metals, such as titanium, thallium and their alloys, for high purity smelting and precision casting。
02
What's the point of a “large ton” condenser
The need for large-scale titanium alloy structures is becoming increasingly urgent as our aviation, space, ships, deep space and deep sea develop rapidly. The processing capacity of domestic foundry equipment is limited and previously large components can be manufactured only in the form of “separation + assembly welding”. This not only requires complex processes and high costs, but also makes it more difficult to ensure the processing accuracy, structural strength, reliability and durability of components。
The emergence of large-tonne vacuum condensers means that several tons of titanium alloy can be smelted once and “integrated” casts, both aerospace and deep ocean submersible. This “large tonnage” condenser provides new ideas for the development of large, complex titanium alloy components and opens up new avenues to become another “winner” in our high-end equipment sequence。
03
Where's the big stove
Large “breath” can “smelt”: as the largest vacuum-crust furnace in the country at present, its vacuum cavity can accommodate a maximum cast size of over 30 cubic metres, its large-power smelting system can provide a current of over 75 ka, and its powerful “fire” output can “find” 2. 5 tons of titanium alloys in 50 minutes, with excellent smelting capacity。
Quick as possible: the titanium alloy casting window is very short, from titanium injection to full cavity, often in seconds. The condenser's condensate condensers can complete 2. 5 tons of titanium in seconds, while the heavy-carrying centrifuge system can drive a rapid rotation of the cast, generating a significant centrifugal acceleration, enabling titanium to be filled in instantaneously and ensuring high-quality casting of large complex structural elements。
Stable as tarzan: through advanced structures such as a steady arc coil, conductive convection loops and full-route co-conductors, the crust furnace can effectively contain arc and arc phenomena and guarantee the stability and control of smelting arcs; large-scale framework electrode transmission systems are equipped with resistance-resilient energy-mitigation devices, which ensure both smelting into stability and mitigating the shock of electrodes when they rise rapidly; in addition, the combination of soft connective devices and barrier-absorption devices can significantly reduce harmful mechanical vibrations and ensure the safety of casting and trans-shipment processes。
Currently, the same product has been sold in several packages and is widely used in titanium foundry. In the client's modern plant, the “large ton” condenser is building a high-end state-owned titanium bone with a stable and reliable “iron arm” to support china in creating a stronger future。
