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Recently, Shaanxi Tiancheng Aviation Materials Co., Ltd. (hereinafter referred to as “Tiancheng Aviation Materials”) broke through the production problem of large-sized cylinder forgings and successfully delivered a titanium alloy cylinder forging with a length of more than 8 meters and a net weight of more than 3000Kg for nuclear power. The titanium barrel adopts a brand-new process design, and the wall thickness is only 35mm. It is currently the largest high-strength thin-walled titanium alloy barrel forging in China.

High-strength thin-walled titanium alloy tube forgings

This cylinder forging is mainly used in a nuclear power project, which has extremely high requirements for product strength, density, heat and corrosion resistance, and because of its large size, how to solve the problem of large temperature difference in the overall forming process, low terminal temperature and uneven stress and strain distribution Maintaining uniform organization, performance and wall thickness before and after the barrel forging is a technical difficulty in the early stage of the project planning.

本項目核心成員共同討論技術方案

方案設計初期，天成航材技術人員充分考慮客戶要求及終端應用場景，對產品成形過程中的應力場、應變場、溫度場等影響產品組織性能和冷熱加工性能的關鍵參數進行分析，通過多次嚴密地計算討論，最終確定了“開坯-兩相區鍛造-鐓餅-沖孔-擴孔-芯軸拔長-平端面-內孔粗車-徑向成型-熱處理-理化檢測”的總體工藝方案。

High and low tissue

Organizational performance data

During the production process, Tiancheng Aviation Materials strictly follows the overall process plan and the GJB 943A-2018 quality standard, and is equipped with 4000T fast forging machines, 2000T radial forging presses and other international leading equipment to perform production tasks. The performance of the products meets customer requirements and meets the terminal Use standards.

“Focus on customer pressure and challenges, and continue to create customer value” has always been Tiancheng Aviation’s insistence. The successful delivery of the ultra-large high-strength titanium alloy tube forgings fully reflects Tiancheng’s work style of breaking through and courageously acting, and also inspires all Tiancheng to continue to overcome difficulties on the road to the development of the titanium industry and to cultivate advanced titanium alloys. The development and application of materials will strive to achieve more breakthroughs in the industry.