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Superplastic Sheet
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Product Overview
Keywords:
Superplastic Sheet
Product Details
Product Model: almgcu-19
Product details:
The aerospace-grade aluminum-lithium alloy superplastic sheet developed by Zhengzhou Light Alloy Institute CO., LTD. has been successfully delivered. The sheet measures 1.2 meters in width, 4 meters in length, and features a thickness ranging from 1.5 to 3 mm. Compared to conventional aluminum-lithium alloy sheets, this new alloy boasts finer grain structures, higher strength, and superior ductility. Moreover, the industrially produced sheets demonstrate a remarkable high-temperature elongation rate of up to 500%, enabling ultra-plastic forming at elevated temperatures for advanced material applications.
Currently, the aviation and aerospace industries have entered an era where even the smallest weight reductions—measured in grams—are critical. As a lightweight, high-strength metal structural material, aluminum-lithium alloys hold immense potential for widespread application in both aerospace and aviation fields. Adding just 1% lithium to the alloy reduces its density by 3% while increasing its elastic modulus by 6%. By replacing conventional high-strength aluminum alloys with aluminum-lithium alloys, engineers can achieve structural weight savings of 5% to 15%, along with a corresponding 15% to 20% improvement in stiffness. Moreover, employing superplastic forming (SPF) technology to produce thin-walled, monolithic aluminum-lithium components further enhances these benefits: it allows for even greater weight reductions, minimizes the number of individual parts required, lowers manufacturing costs, and boosts the overall rigidity and reliability of aerospace components. As a result, this innovative approach is delivering substantial social and economic advantages to the aerospace industry. Leading nations such as the United States, the United Kingdom, other European countries, the former Soviet Union and Russia, as well as Japan, have already incorporated this technology into their national high-tech development programs, recognizing it as a key strategy for advancing the aerospace sector. Today, superplastically formed aluminum-lithium alloy components are successfully integrated into a wide range of spacecraft, military aircraft, and civilian planes. Common application areas include fuselage frames, flap ribs, electronic equipment covers, aircraft nose landing gear, vertical stabilizers, fairings, inlet lip structures, engine access doors, aircraft maintenance hatches, and various panel components.
Due to lithium's highly reactive nature, melting aluminum-lithium alloys under atmospheric conditions easily leads to oxidation, slag formation, and hydrogen absorption, severely impacting the alloy's performance and quality. Currently, high-quality aluminum-lithium alloys worldwide are produced exclusively under vacuum or vacuum-negative-pressure conditions, typically using one of the following three methods:
① Vacuum melting and casting method;
② Gas-protected melting + negative-pressure hydrogen removal and holding + semi-continuous casting method;
③ Gas-protected melting + spray deposition casting method.
Zhengzhou Light Alloy Institute CO., LTD, leveraging its R&D platform, has established an Aluminum-Lithium Alloy R&D Department to optimize the vacuum melting and casting process. The department employs a specialized "process" to produce ultra-plastic aluminum-lithium alloy sheets. This innovative approach effectively addresses key challenges associated with aluminum-lithium alloys, such as hydrogen absorption, oxide slag formation, compositional segregation, and susceptibility to shrinkage porosity. As a result, the company is now capable of supplying aluminum-lithium alloy products—including sheets, strips, foils, tubes, bars, wires, and forgings—in various grades like 1420 and 2195—on a large-scale basis. Additionally, the company offers customized components tailored to customer-specific drawings. Moreover, for pre-research models of aluminum-lithium alloys, the company boasts comprehensive development capabilities—from design drafting through to final component delivery, encompassing all critical stages: melting and casting, machining and forming, heat treatment, precision machining, surface finishing, and rigorous quality inspection.
Application Areas
Military Equipment
Aerospace
3C Consumer Electronics
Smart Robots
Low-Altitude Economy
New Energy Vehicles
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