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Titanium alloy is widely used in aerospace, medical, automotive and other high-end manufacturing fields due to its excellent properties such as high specific strength, corrosion resistance and biocompatibility. However, its poor machinability—characterized by high cutting temperature, severe tool wear, and easy work hardening—poses great challenges to machining processes. To improve machining efficiency, reduce tool consumption and ensure workpiece quality, mastering the following three key points is essential, with a focus on coating selection and cutting parameter optimization.   Key Point 1: Understand the Machinability of Titanium Alloy   Before selecting coatings and setting cutting parameters, it is necessary to clarify the intrinsic characteristics of titanium alloy that affect machining, which is the basis for subsequent optimization:   • Low thermal conductivity: The thermal conductivity of titanium alloy is only 1/4~1/5 of that of steel. During cutting, most of the heat generated accumulates in the cutting zone (tool tip and workpiece contact area) instead of being dissipated through chips or workpieces, leading to extremely high local temperature (up to 800~1000℃), which accelerates tool wear and workpiece deformation. • High chemical activity: At high temperatures, titanium alloy is easy to react with oxygen, nitrogen and carbon in the air to form hard and brittle compounds (such as TiO₂, TiN, TiC), which will increase cutting force and cause abrasive wear of tools. It may also bond with the tool material, resulting in adhesive wear. • Work hardening tendency: Titanium alloy has a high yield strength and obvious work hardening effect. During cutting, the surface of the workpiece is prone to hardening layers (hardness can be increased by 20%~50%), which will scratch the tool and affect the surface quality of the subsequent machining.   Note: The P1 can be a comparison chart of thermal conductivity between titanium alloy and common metals, or a microscopic diagram of work hardening layer of titanium alloy after cutting.   Key Point 2: Rational Selection of Tool Coatings Tool coatings play a crucial role in titanium alloy machining by reducing friction, isolating high temperature, improving chemical stability and enhancing wear resistance. The selection of coatings should be based on the type of titanium alloy (such as Ti-6Al-4V, pure titanium), machining method (milling, turning, drilling) and machining requirements (roughing, finishing). Common high-performance coatings for titanium alloy machining are as follows:   2.1 Titanium Nitride (TiN) Coating TiN coating is a traditional hard coating with a hardness of about 2000~2500 HV and a low friction coefficient (0.4~0.6). It has good wear resistance and adhesion, and can effectively reduce adhesive wear between the tool and titanium alloy. However, its oxidation resistance is poor, and it will oxidize and fail when the temperature exceeds 500℃. It is suitable for low-speed roughing of pure titanium and low-alloy titanium, or machining scenarios with low cutting temperature.   2.2 Titanium Carbonitride (TiCN) Coating TiCN coating is an improved version of TiN, with a hardness of 2500~3000 HV, higher wear resistance and thermal stability than TiN. The addition of carbon element enhances the coating's resistance to adhesive wear and abrasive wear, and its oxidation resistance temperature is increased to 600~650℃. It is suitable for medium-speed turning and milling of Ti-6Al-4V and other commonly used titanium alloys, and can balance machining efficiency and tool life.   2.3 Aluminum Titanium Nitride (AlTiN) Coating AlTiN coating is a high-temperature resistant coating with excellent comprehensive performance, with a hardness of 3000~3500 HV and oxidation resistance temperature up to 800~900℃. The aluminum element in the coating forms a dense Al₂O₃ film at high temperature, which can effectively isolate the chemical reaction between titanium alloy and the tool substrate (such as carbide), and significantly reduce thermal wear and chemical wear. It is the preferred coating for high-speed finishing and semi-finishing of titanium alloy, especially suitable for high-temperature machining scenarios such as high-speed milling and deep-hole drilling.   2.4 Diamond-Like Carbon (DLC) Coating   DLC coating has an extremely low friction coefficient (0.1~0.2) and high hardness (1500~2500 HV), which can minimize the friction and adhesion between the tool and titanium alloy, and avoid work hardening caused by excessive cutting force. However, its thermal stability is poor (oxidation failure above 400℃) and it is brittle, so it is only suitable for low-speed, low-temperature finishing of pure titanium and soft titanium alloys (such as Ti-Gr2), and not for high-temperature roughing.   Note: The P2 can be a performance comparison table of different coatings (hardness, oxidation temperature, applicable scenario) or a physical diagram of coated tools for titanium alloy machining.   Key Point 3: Scientific Setting of Cutting Parameters   Cutting parameters (cutting speed, feed rate, depth of cut) directly affect cutting temperature, cutting force, tool wear and workpiece quality. For titanium alloy machining, the core principle of parameter setting is "low cutting speed, moderate feed rate, small depth of cut", so as to control cutting temperature and reduce work hardening. The following are the recommended parameters for common machining methods (taking Ti-6Al-4V, the most widely used titanium alloy, and carbide tools as examples):   3.1 Turning Parameters   • Cutting speed (vc): For roughing, the speed is 30~60 m/min; for finishing, it is 60~100 m/min. If using AlTiN coated tools, the speed can be appropriately increased to 80~120 m/min; for pure titanium, the speed should be reduced by 20%~30% to avoid excessive adhesion. • Feed rate (f): The feed rate is 0.1~0.3 mm/r for roughing and 0.05~0.15 mm/r for finishing. Too high feed rate will increase cutting force and work hardening; too low feed rate will cause the tool to rub against the workpiece, accelerating wear. • Depth of cut (ap): The depth of cut for roughing is 1~3 mm, and for finishing is 0.1~0.5 mm. It is not recommended to use a depth of cut less than 0.1 mm, because the tool will slide on the hardened layer of the workpiece, resulting in severe abrasive wear.   3.2 Milling Parameters   • Cutting speed (vc): For peripheral milling (roughing), the speed is 20~50 m/min; for finishing, it is 50~80 m/min. For face milling, the speed can be slightly higher, 40~70 m/min for roughing and 70~100 m/min for finishing. Coated tools can increase the speed by 10%~20%. • Feed rate per tooth (fz): The feed rate per tooth is 0.05~0.15 mm/tooth for roughing and 0.02~0.08 mm/tooth for finishing. For end milling of thin-walled workpieces, the feed rate should be reduced to avoid workpiece deformation. • Depth of cut (ap/ae): The axial depth of cut (ap) for roughing is 0.5~2 mm, and for finishing is 0.1~0.3 mm; the radial depth of cut (ae) is generally 50%~100% of the tool diameter.   3.3 Drilling Parameters   Drilling titanium alloy is prone to problems such as chip clogging, tool breakage and poor hole quality. The parameters should be set to facilitate chip removal:   • Cutting speed (vc): 10~30 m/min, which is lower than turning and milling, to reduce the temperature of the drill tip. • Feed rate (f): 0.1~0.2 mm/r, ensuring that chips can be discharged smoothly without clogging the drill flute. • Auxiliary measures: Use internal cooling drills to spray cutting fluid directly to the drill tip, which can effectively reduce temperature and flush chips; adopt intermittent drilling (drill in and out repeatedly) to avoid chip accumulation.   Note: The P3 can be a parameter setting diagram for turning/milling/drilling, or a curve diagram of the relationship between cutting speed and tool life.   Summary The key to successful titanium alloy machining lies in three aspects: first, fully understanding the machinability characteristics of titanium alloy to target optimization; second, selecting the appropriate tool coating according to machining scenarios to improve tool wear resistance and high-temperature stability; third, setting scientific cutting parameters to control cutting temperature and reduce work hardening. In actual production, it is also necessary to match with high-quality cutting fluid (preferred for water-based cutting fluid with good cooling performance, or oil-based cutting fluid for low-speed machining) and reasonable tool geometry, so as to achieve the best machining effect.  

In the pursuit of ultimate efficiency and precision in the field of modern machining, tool performance directly determines production efficiency and product quality. Our newly developed high-performance end mills provide you with a full range of precision machining solutions with innovative technology and excellent quality.     Core technology, excellent performance adopts advanced nano-coating technology, which significantly improves tool wear resistance and heat resistance, effectively reduces cutting resistance and extends service life; unique helical flute geometric design optimizes the chip path, reduces chip accumulation, and ensures stable and smooth machining; high-precision flute grinding process realizes micron-level machining accuracy, which meets the demanding machining requirements of complex curved surfaces and thin-walled parts. High-precision edge grinding process realizes micron-level machining accuracy, which meets the severe machining requirements of complex curved surfaces and thin-walled parts.     Multiple Advantages for Efficient Production Quiet and Low Vibration: The dynamically optimized design controls cutting vibration to a very low range, reduces operating noise by 30%, reduces equipment loss, and enhances the comfort of the operating environment. High-gloss surface: With precision cutting edge and chip removal performance, the surface roughness of the workpiece after machining can reach 0.8μm or less, eliminating the need for secondary polishing and saving machining time and cost. Ultra-long life: Tested, under the same working conditions, the tool life is 120% higher than traditional end mills, which reduces the frequency of tool change and improves the utilization of equipment.     Widely used to meet diversified needs Whether it is titanium alloy parts machining in the aerospace field, mold manufacturing in the automotive industry, or aluminum alloy precision parts production for 3C products, our end mills can perform stably, and cope with all kinds of complex materials and machining scenarios with excellent performance, which helps enterprises break through the technological bottlenecks and enhance the competitiveness of their products.     Professional service, worry-free From product selection to process optimization, our technical team provides one-to-one professional support; perfect after-sales protection system ensures quick response and problem solving, so that your production is worry-free. Choosing our end mills means choosing higher machining efficiency, lower overall cost and more reliable quality assurance. Contact us now to start a new experience of precision machining!

High dimensional accuracy: good stability of cemented carbide material and high manufacturing precision of flat bottom reamer cutting edge can make the hole size error after processing extremely small, which can control the hole tolerance in a very small range to meet the requirements of precision parts processing. For example, in aerospace parts processing, the hole size accuracy requirements are harsh, it can accurately ensure that the hole diameter meets the design standards.   Excellent shape accuracy: The flat bottom design enables the reamer to ensure the flatness and straightness of the bottom of the hole when machining blind holes, so that the cylindricity and other shape accuracies of the holes are good, which provides a reliable basis for the subsequent assembly and use of parts.   Low roughness: high hardness and wear resistance of cemented carbide, sharp and durable cutting edge of reamer, smooth cutting during machining, little extrusion and scraping on the hole wall, low surface roughness of the machined hole wall, which can reach Ra0.4 - Ra1.6μm, making the parts more beautiful and facilitating the installation of seals and fittings inside the holes. Strong durability: The high hardness and good thermal hardness of cemented carbide allow the flat bottom reamer to maintain the sharpness and integrity of the cutting edge under high speed and high load cutting conditions, and it is not easy to wear and breakage. Compared with ordinary reamers, it significantly reduces the frequency of tool change, improves machining efficiency, reduces tool costs, and is suitable for large-volume hole processing. Small cutting force: Reasonable tool geometry parameters design, with the advantages of carbide material, so that it cuts smoothly during cutting, small cutting force, can reduce machine power consumption, reduce the deformation of the workpiece, especially suitable for thin-walled, easy to deform the parts of the hole machining.