Titanium alloy cutting is extremely difficult to process due to its low plasticity, large springback, high chemical activity at high temperatures, large friction coefficient, small elastic modulus, and small thermal conductivity. Especially in aviation turbine components, titanium alloy materials can easily cause surface burns on the workpiece during the creep grinding process, which will significantly reduce the surface quality and hardness, thus affecting the quality and service life of the entire product.
Behind this challenge, Xiamen Jinlu is committed to the research and development of tungsten series products in the aerospace field, such as ST300 end mills, ADGT square shoulder milling, etc., and has greatly improved the efficiency of titanium alloy processing through excellence in design. At the same time, Unitech has been focusing on the research and development and manufacturing of surface forming grinders, providing solutions for titanium alloy workpieces.
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Xiamen Golden Heron
Titanium alloy has high strength, low density, corrosion resistance and other properties, and is widely used in aerospace, energy, medical and other fields. In the aviation field, titanium alloy structural parts are mainly used in key parts such as aircraft fuselages and wings, and are the "important skeleton" of the aviation field. Xiamen Jinlu has many years of experience in product development and parts solutions. Based on market demand, it provides customers with mature and efficient titanium alloy structural parts solutions by optimizing process solutions and developing high-quality cutting tools.
01
Solution introduction
Xiamen Jinlu is deeply involved in terminals and has accumulated strength in the aerospace field for many years, providing customers with a variety of parts processing solutions. The following are Jinlu's mature titanium alloy structural parts processing solutions.
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New product highlights introduction
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(1) Yinque series ST300 end mill
The new ST300 titanium alloy high-performance end mill can significantly improve titanium alloy processing efficiency. In order to meet the needs of different working conditions, three tool types have been released: 4-edge flat head, 4-edge fillet head, and 5-edge fillet head. There are 7 models and 325 specifications, with the following design features:
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(2) Yinque series ADGT square shoulder milling
ADGT square shoulder inserts are mainly used for semi-finishing and finishing machining of aerospace titanium alloy structural parts. They can significantly improve the verticality accuracy and surface quality of bottom surface processing. The specifications include AD10/12/18, with complete fillet settings and matching cores. There are three types of cutter bodies: shaft type, cylindrical straight shank type and interchangeable cutter head, which can meet the processing conditions of face milling, cavity milling, side milling, plunge milling, etc., and have the following design features:
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(3) Yinque series SOE(M)T fast feed milling
SOE(M)T fast-feed inserts are mainly used for fast-feed rough machining of aerospace titanium alloy structural parts. There are two specifications of inserts, SO09/12, which are equipped with SM general-purpose geometries and ST slot milling-specific geometries. SM The geometries are simultaneously equipped with precision grinding grade SOET. Both geometries are equipped with three cutter body types: mandrel type, cylindrical straight shank type and replaceable cutter head, which can achieve full coverage of fast feed working conditions and meet the needs of face milling, Processing conditions such as cavity milling, slot milling, and ramping have the following design features:
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03
Processing examples and conclusions
Aerospace titanium alloy frame -TC4 - side wall rough machining
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Aviation wing frame joint surface -TC4-side wall semi-precision milling
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Titanium alloy beam-TC4-cavity rough milling
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Advantages and effects of cutting tools
Xiamen Jinlu's new titanium alloy structural parts solution is another improvement and breakthrough for Xiamen Jinlu in the field of titanium alloy processing, including Yinque series ST300 titanium alloy high-performance end mills, ADGT square shoulder inserts, SOE ( M)T fast-feed inserts, with their refined structural design and ingenious new titanium alloy grades, have excellent high-efficiency and high-quality processing performance of titanium alloys, providing customers with solid wings for efficient titanium alloy processing, helping them to soar to a higher level. further into the future.
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Unite
01
Processing technology and solutions
Usually the machine tool is equipped with indexing worktables, fixtures, grinding wheel sets and other accessories, and uses peristaltic grinding technology to process turbine components such as turbine moving blades, turbine guide vanes and sealing blocks.
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Difficulties in workpiece processing
Most aviation turbine component materials, especially titanium alloy materials, are very easy to cause surface burns on the workpiece during creep grinding process. Surface burns will significantly reduce the surface quality and surface hardness of the workpiece, thereby reducing the quality and service life of the entire product. At the same time, many small surface burns cannot be seen with the naked eye and can only be detected by professional optical instruments. However, in actual production, it is unrealistic to optically measure every processed workpiece, which will greatly reduce production efficiency.
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processing method
The horizontal X-axis of the new PLANOMAT XT, PROFIMAT XT and PROKOS XT series grinding machines recently developed by Borning, Germany, can be directly driven by a linear motor. In this way, a new high-speed reciprocating grinding process was developed.
When using the high-speed reciprocating grinding process, the feed per cut of the grinding wheel is slightly reduced, but the reciprocating speed of the grinding wheel is greatly increased. Combined with the powerful follow-up coolant nozzle system of Germany's Boring, the heat generated by the grinding surface is quickly take away. Without reducing production efficiency, the risk of burns on the titanium alloy surface is greatly reduced.
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Processing examples and conclusions
▶Part name: Aviation turbine guide blades
▶Part material: titanium alloy
▶Machine tool: PROFIMAT XT 612 from Borning, Germany
▶Cooling method: coolant system + follow-up coolant nozzle system
▶Processing type: high-speed reciprocating grinding
▶Tool: corundum grinding wheel
▶Grinding results: The grinding efficiency is slightly higher than the creep grinding process with continuous dressing function, much higher than the ordinary creep grinding process, while greatly reducing the risk of surface burns
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Equipment introduction
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▶Machine tool size: five processing area sizes, namely 400x800mm; 400x1200mm; 600x800mm; 600x1200mm and 600x2000mm.
▶Machine tool hardware: equipped with the C.O.R.E panel newly developed by United Grinding Group; the machine tool is fully modular in design; has the advantages of high rigidity, excellent shock absorption, and minimizes the impact of thermal changes; high-precision linear guide rails and recirculating roller screws ; Can adopt linear motor drive method, etc.
▶Machine tool software: C.O.R.E OS operating system; user-friendly operation guidance interface; menu-based grinding program and dressing program editing function; can real-time monitor important machine tool parameters; can easily realize Industry 4.0 requirements, etc.
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Advantages and effects
When using high-speed reciprocating grinding process to process aviation turbine titanium alloy workpieces:
▶Greatly reduce the risk of surface burns on turbine workpieces, especially titanium alloy workpieces;
▶Improved production efficiency;
▶The processing technology is more stable;
▶The grinding wheel wears less and the production cost is reduced;
▶Low grinding stress;
▶Very suitable for grinding titanium alloy workpieces, etc.
