SXCQ Metal Material Technology Co., Ltd. has developed an ultra-high-strength aluminum alloy that exceeds all existing international indicators-7Y69, and has obtained 37 invention patents in this field. It is understood that this result has cost more than 70 million yuan after ten years of hard research and development.
Leading international wear-resistant full density high strength
The ultra-high-strength aluminum alloy invented this time adopts brand-new invention technology, and the product has the characteristics of wear-resistant rigidity and high strength, which is at the international leading level. Ultra-high-strength aluminum alloy 7Y69 adopts new technology to produce high-performance ultra-abrasive and ultra-high-strength products. Its relative density can reach more than 99.6%. After subsequent hot processing (forging, rolling, extrusion or hot pressing), it can also be formed. Full dense product.
After 7Y69 is processed by T6 technology, its thermal conductivity is approximately 171W / mK; linear expansion coefficient is approximately 23.5um / (mK); elongation A% 3.5, hardness HRB≥98, compressive strength greater than 80 MPa, the indicators are all International leader.
The National Patent Office's summary of the 7Y69 patent description said: "The present invention provides an ultra-high-strength aluminum alloy and a preparation method thereof. The aluminum alloy material is prepared with a specific formula. Its microstructure is significantly refined and precipitated. The phase is small and uniformly distributed, making its mechanical properties almost anisotropic, and has the advantages of high strength, high toughness, high rigidity, and light weight. Experimental results show that after the T6 treatment of the ultra-high strength aluminum alloy provided by the present invention, its Tensile strength ≥917MPa, yield strength ≥874MPa ".
Compared with the traditional process, this technology ensures the uniform and fine distribution of the alloy without segregation. It has the characteristics of high accuracy, uniform structure, excellent performance, and low comprehensive production cost. It also has high corrosion resistance, and is resistant to high salt and acid. High alkali has good anti-corrosion effect, especially the unique anti-corrosion property to seawater. The product is still bright as new after three years of experimental immersion in various sea areas of our country, there is no parasite phenomenon of marine life, and it has no pollution to the environment. The human body is harmless.
Widely used in the traditional metal manufacturing industry
The significance of this invention, such as ultra-high-strength aluminum alloys, lies not only in the optimization of aluminum alloy properties and the international leadership of various indicators, but also in its broad application scope and manufacturing prospects.
Relevant experts believe that the invention and application of ultra-high-strength aluminum alloys have completely solved the material problems for the production of petroleum and natural gas pipelines and ultra-high pressure vessels, which has made China leap into the world's leading position in the field of ultra-high pressure vessel manufacturing.
Products made of ultra-high-strength aluminum alloy can be widely used in aerospace and navigation, weapon industry, oil pipeline transportation, urban water pipeline network, electronic information engineering, modern construction, transportation bridges, medical equipment, auto parts, engineering machinery and other high-precision Pointed field. In particular, the melting point of this product is only 780 degrees Celsius, which is very suitable for 3D printing materials.
It is expected that in the near future, the popularization and application of ultra-high-strength aluminum alloys will make China's metal manufacturing industry greatly break through the traditional scope and lead the world.