Titanium alloys, especially aerospace-grade titanium alloys, play a vital role in aircraft structural parts such as wing support structures and engine components due to their high strength, low density and excellent corrosion resistance. To ensure that titanium alloys meet the strict quality standards in the aerospace field, manufacturers need to take a series of measures during the production process, covering multiple links such as raw material selection, smelting process, heat treatment, processing and manufacturing, and quality inspection.

Raw material selection and smelting process
The main components of titanium alloys include titanium, aluminum, vanadium and other elements. For example, Ti-3Al-2.5V titanium alloy contains 3% aluminum and 2.5% vanadium. Manufacturers must first ensure that the purity and proportion of these raw materials meet international standards, such as ASTM B348, which specify key parameters such as the chemical composition, physical properties and mechanical properties of titanium alloys in detail.

During the smelting process, manufacturers usually use advanced equipment such as electron beam furnaces (EB furnaces) or hydrogen dehydrogenation furnaces (H-2) to ensure the uniformity of the alloy composition and quality stability. For TA2 titanium alloy, the titanium content must exceed 99%, and the content of impurities such as oxygen, nitrogen, hydrogen, and carbon must be strictly controlled within a certain range to avoid affecting the physical properties and corrosion resistance of the material.

Heat treatment and processing and manufacturing
Heat treatment is a key step to improve the mechanical properties and stability of titanium alloys, including solid solution treatment, aging treatment and other processes. Manufacturers need to follow standards such as AMS 4925 to accurately heat treat titanium alloys to ensure that they achieve the required mechanical properties and stability.

During the processing and manufacturing process, the high hardness and low thermal conductivity of titanium alloys increase the difficulty of cutting. Manufacturers need to use carbide or ceramic tools and optimize cutting parameters, such as reducing cutting speed, increasing feed rate, and using coolant to reduce cutting heat and tool wear. At the same time, due to the low elastic modulus of titanium alloys, deformation is prone to occur during processing, so precise process design is required, including reasonable fixture design, processing sequence arrangement and allowance allocation, etc., to control deformation and ensure part accuracy.

Quality inspection and acceptance
Quality inspection is the last line of defense to ensure that titanium alloy products meet aerospace grade standards. Manufacturers need to conduct strict chemical composition analysis, mechanical property testing, non-destructive testing, etc. on titanium alloy products. Among them, mechanical property testing includes testing of key parameters such as tensile strength, yield strength, elongation and hardness, and must follow standards such as GB/T 228.1, ASTM E8/E8M-11, etc. Non-destructive testing is used to detect whether there are defects inside titanium alloy products, such as cracks, inclusions, etc.

In addition, for titanium alloy products in the aerospace field, special tests such as grain size assessment (following ASTM E112 standard) and fatigue performance testing are also required to ensure their reliability and stability in extreme environments.

Follow international standards and continue to innovate
To ensure the quality and performance of titanium alloy products, manufacturers must also follow a series of international standards, such as ISO 9001 (production management system certification standards), etc., to improve product reliability and consistency. At the same time, with the advancement of technology and the growing demand for titanium alloy materials in the aerospace field, manufacturers must continue to innovate and develop new titanium alloy materials and processing technologies to meet more stringent quality standards and wider application needs.

In summary, titanium alloy manufacturers need to strictly control the purity and proportion of raw materials, optimize smelting processes, accurately perform heat treatment, fine processing and manufacturing, strictly conduct quality inspection and acceptance, and follow international standards and continuous innovation during the production process to ensure the production of titanium alloy products that meet the strict quality standards of aerospace grades.