Titanium alloy ternary flow impeller and processing method thereof

By disassembling the titanium alloy three-dimensional flow impeller into concave and convex components, and combining 3D printing and precision machining technologies, the problems of low material utilization and welding processes in existing technologies are solved, achieving material savings and impeller performance improvement.

CN122407599APending Publication Date: 2026-07-17CHONGQING PUBLIC TRANSPORTATION CAREER ACADEMY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING PUBLIC TRANSPORTATION CAREER ACADEMY
Filing Date
2026-05-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for manufacturing titanium alloy three-dimensional flow impellers suffer from low material utilization, long processing cycles, and high costs. Furthermore, the thermal deformation and stress concentration problems caused by the welding process severely affect the dynamic balance performance and reliability of the impeller.

Method used

The blade structure is divided into two parts, an inner concave part and an outer convex part, which are manufactured and processed separately. Metallurgical connection is achieved through 3D printing and precision machining technology. Combined with the oblique insertion connection of the oblique slot and the card body, the filling of the through hole and the fitting design of the annular groove, the boundary line is optimized to improve the connection stability and hydrodynamic performance.

Benefits of technology

This achieves efficient use of materials, reduces processing difficulty and cost, improves the connection stability and hydrodynamic performance of the impeller, and ensures overall efficiency and reliability.

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Abstract

本发明公开了一种钛合金三元流叶轮及其加工方法,涉及叶轮技术领域,其技术方案要点是:包括:轮毂;多个内侧叶轮,安装在轮毂上;增材体,包括底盘和外侧叶轮,且在增材制造过程中通过材料熔融沉积与轮毂和内侧叶轮冶金连接;底盘覆盖内侧叶轮的底部以及内侧叶轮与轮毂之间连接的连接部;内侧叶轮与对应的外侧叶轮构成分体式的叶片结构。本发明将叶片结构拆分内外两个具有简化曲面特征的部件,分别进行制造加工,使得各部件能够更好地适配不同的制造工艺特点,降低了单一复杂构件的加工难度;此外,该划分方式还有效减少了后续切削加工、铣削处理中需要去除的多余材料体积,从整体上实现了全工艺流程中的材料高效利用与耗材节约。
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