The turning of titanium alloy, high temperature alloy is machined

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  • source:JUSTYN CNC Machining
These a few years, titanium alloy, high temperature alloy gains ground to come in the application in aviation domain, be in especially turbine lamina, compressor, the application in frame spare parts. After material pledges the advantage is known extensively by people, already was gone to by promotion now car, medicine, chemical industry, small etc in domain of a few industry. Along with titanium alloy, the application of high temperature alloy in industrial domain is wider and wider, simple to such difficult treatment material treatment also became the difficult problem that people pays close attention to very much. High intensity / weight comparing, your titanium has tall durability. With alloy steel, cast-iron photograph is compared, titanium has better strength, tenacity, extend a gender. Additional, titanium still is had fight oxidisability and corrosion resistance these two very main to mechanical spare parts character. Although have afore-mentioned advantages, its are difficult processability lets a person flinch however. Same question also appears in the treatment to high temperature alloy. Its difficulty depends on the local high temperature that generation of tall cutting power accompanies in cutting process. Because local high temperature can cause the damage of cutting blade, main show is flake, be out of shape. Although be when the work that processes same rigidity, the cutting force that machines titanium alloy does not compare treatment steel cutting power is a lot of higher, more complex however to the treatment process of titanium alloy with difficulty, list as follows: The character of the low coefficient of thermal conductivity of titanium, make the major heat in metal cutting of generation, remain is on point of a knife. In turning process, spare parts surface can produce treatment sclerosis phenomenon, surface of influence spare parts contains the uniformity that titanium measures, reduce combat fatigue strength, precision of dimension of spare parts geometry. Below extremely individual situation, heat in metal cutting can cause scintilla even. In heavy-duty treatment, the low stretch standard of titanium is measured, can bring about be out of shape with shake. In addition, according to chemical function, titanium has the character that produces chemical reaction character with cutting tool material, can quicken the formation with depression crescent moon. Normally the circumstance falls, of cutting tool wear away can wear away with border, the form of the tumour that accumulate bits appears. Border wears away edge cutting blade, after knife face and before knife face appears at the same time, along with cut differ greatly and change. After cast, forging, heat treatment, the sclerotic surface layer that the working procedure place in front brings up, also be to cause one of bit tatty causes. The local temperature of cutting blade often exceeds 800 ℃ , this meeting causes bit material to pledge with workpiece material the chemical reaction between and physics diffuse character, cause border finally to wear away. Another kind of circumstance is, in machining a process, reach constant temperature when the interface of cutting tool and workpiece at the same time pressure taller when, below the action of cold welding, workpiece material felt is advanced on knife face, form the tumour that accumulate bits. The tumour that accumulate bits is formed ceaselessly, flake from bit ceaselessly again, flake every time can come off the material of one part alloy on bit pledges at the same time, quicken cutting tool wear away. In be machined actually, the solution that ISCAR offers: One, bit coating: ISCAR is recommended strongly use the TiAIN PVD coating that exceeds fine matrix to machine titanium alloy, high temperature alloy. PVD place brings thin, slick coating surface, with matrix between powerful conglutinate force, raised cutting tool to fight flake, fight the ability with depression crescent moon. Consequently, your razor blade has PVD coat better wearability, chemical stability, fight the function of the tumour that accumulate bits. 2, relying on coating only is to be able to 't solve treatment problem, still need proper treatment program: 1, use big before horny cutting tool, with reducing cutting force effectively, heat in metal cutting, the dimension error of workpiece is the smallest at the same time; 2, the effective method that constant feed is sclerosis of treatment of surface of effective precaution workpiece. 3, the cooling fluid of large flow, also machine these workpiece stuff place to need. The use of cooling fluid, ensured thermal stability, the metallographic change that because heat in metal cutting is local,prevented to center the workpiece material qualitative appearance that create reachs cutting tool invalidation. Local concentration cools or choose cooling fluid to flow to conciously, it is very useful method, in fact, cooling fluid can act workpiece and the action that cut the protective screen between bits even. 4, change tool cutting edge angle, choose the garden razor blade with matrix great strength, also reduce border effectively to wear away. In fact, ISCAR has a series of settlement already titanium alloy, the plan of difficult treatment of high temperature alloy. Manufacturer of the world's famous a few big aviation, all adopted the cutting tool of set of knife of CUT-GRIP Xiang Yu the Conqueror of ISCAR, use at cutting off, grooving treatment, especially complex jet-propelled engine package. In addition, ISCAR still is aimed at research and development of nickel radical alloy, high temperature alloy, titanium alloy IC907, IC3028. Also developed the distinctive chamfer that applies to these two brands in ISO standard razor blade model. Attached drawing material requesting an audience pledges the commutate that is Inconel 718 is overspread, it is a in solving complex part to machine when ISCAR place makes. In this project, much material can be excised, treatment process need is multilayer grooving. ISCAR designed distinctive arbor, razor blade for this spare parts, solved treatment successfully with set of knife of CUT-GRIP Xiang Yu the Conqueror this difficult problem of complex part. CNC Milling CNC Machining