Processing Technology Of TC18 Titanium Alloy

I. Overview of TC18 titanium alloy
TC18 titanium alloy is a high-strength α + β duplex titanium alloy with excellent mechanical properties and corrosion resistance, which is widely used in aerospace, chemical, medical and other fields. The selection of its machining process has a crucial impact on the performance of the final product.
II. Preparation before processing
Material selection: ensure the selection of high-quality TC18 titanium alloy raw materials to ensure the quality of the processed product.
Pre-treatment: carry out the necessary pre-treatment of raw materials, such as cleaning, degreasing, etc., in order to remove surface impurities and oil, and improve processing efficiency and quality.

III. Processing steps
Cutting and forming
Cutting: Use suitable cutting tools (such as laser cutting machine, waterjet, etc.) to cut the TC18 titanium alloy raw material into the required shape and size.
Forming: The cut material is processed into the required shape and size by forging, rolling, extruding and other forming processes.TC18 titanium alloy large-size rods are usually forged by a multi-fire forging process with "high - low - high" temperature characteristics, in order to obtain a uniform organization and excellent performance.
Heat Treatment
Annealing treatment: Annealing treatment is carried out at a specific temperature to eliminate internal stresses and organizational defects generated during processing and to improve the plasticity and toughness of the material.
Solid solution treatment: The material is heated to a certain temperature and held for a certain period of time, so that the alloying elements are fully dissolved in the matrix to form a uniform solid solution.
Aging treatment: After solid solution treatment, aging treatment is carried out to make the alloying elements precipitate out in specific forms, so as to strengthen the material and improve the comprehensive performance.
Mechanical Processing
Turning: TC18 titanium alloy is turned using a lathe to obtain precise dimensions and shapes.
Milling: The material is milled by means of a milling machine to create complex flat and curved shapes.
Drilling: Drilling of holes in TC18 titanium alloy using drill presses or drilling machines to meet specific design requirements.
Grinding: The machined surface is ground to improve surface finish and accuracy.
Surface Finishing
Pickling: Remove oxidized skin and stains generated during machining to improve surface quality.
Polishing: Polishing the surface to obtain a smooth and bright appearance.
IV. Processing Precautions
Selection of suitable tools: Due to the high hardness of TC18 titanium alloy, machining requires the use of high-speed tungsten steel or multi-layer coated carbide tools, and optimization of tool geometry to improve machining efficiency and quality.
Control of cutting parameters: the cutting temperature of titanium alloy is easy to rise, so it is necessary to control the cutting speed, feed and depth of cut and other parameters, and strengthen the use of cutting coolant to reduce the cutting temperature.
Maintain stable cutting: titanium alloy cutting process is prone to vibration and shock, so we need to choose the appropriate clamping method, strengthen the rigidity of the machine tool and reduce the vibration of the workpiece and other measures to maintain the stability of the cutting process.

Pay attention to safety protection: titanium alloy machining process will produce a large number of titanium chips and titanium powder, these substances are flammable, explosive and harmful to the health of workers, so you need to strengthen ventilation, the use of special titanium alloy cutting fluid and wear good protective glasses and other safety measures.
V. Quality inspection after processing
After processing, we need to carry out strict quality inspection of TC18 titanium alloy products, including dimensional accuracy, surface quality, mechanical properties and other aspects of the test to ensure that the product meets the design requirements and use standards.
The processing of TC18 titanium alloy is a complex process involving multiple links and technologies, which requires strict control of the process parameters and quality requirements of each link to ensure the performance and quality of the final product.

GNEE can provide processing services:
Cutting services
Bending and molding
Soldering and joining
Surface treatment
Punching and Drilling
Customized Machining