低成本TC18钛合金大规格锻板的制备方法

Large-size TC18 titanium alloy forged plates are prepared by using a 2-3 cycle forging process with high and low pressure and reverse upsetting, which solves the problems of long production cycle and high cost in traditional production. This process achieves uniform microstructure and consistent performance of large-size forged plates, meeting aerospace standards.

CN117816881BActive Publication Date: 2026-07-17西部超导材料科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-01-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional TC18 titanium alloy free forging production suffers from problems such as long preparation cycle, high losses, and repeated testing, making it difficult to meet the low-cost and rapid response requirements of aerospace equipment. Furthermore, existing technologies face significant challenges in controlling the microstructure and properties when producing large-sized forgings.

Method used

Large-size forged plates of TC18 titanium alloy are prepared by using a 2-3 cycle high-low-high forging process, combined with reversing upsetting and flat forging methods. This process includes 2-4 forging cycles, heating and holding above and below the phase transformation point, and controlling the final forging temperature above 600℃. The plates are then subjected to heat treatment and machining.

Benefits of technology

This achieves uniform microstructure and consistent performance in large-size forged plates, reduces manufacturing costs, shortens the manufacturing cycle, improves production efficiency, and meets aerospace standards.

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Abstract

本发明公开了低成本TC18钛合金大规格锻板的制备方法，包括：步骤1、对钛合金铸锭进行2～4火次锻造，锻造过程中加热保温后进行镦拔，得到中间坯；步骤2、将中间坯在相变点以上100℃～200℃和相变点以下30℃～60℃的两个温度范围内加热保温，进行4～6火次锻造，得到锻坯；步骤3、将锻坯在相变点以上温度进行1火次锻造，得到锻板；步骤4、对锻板进行热处理及机加工，得到成品锻板。本发明方法锻造火次少，打磨次数少，生产周期短，可制备出单重为1t～3t、规格为150mm～250mm(厚)×300～1000mm(宽)×1000mm～3000mm(长)的大规格锻板，且所制备锻板的组织均匀性及性能均满足航空标准要求。
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Citation Information

Patent Citations

  • Preparation method of TC18 titanium alloy large-specification bar

    CN115121752A