In the late 1960s, the Japanese took the lead in manufacturing PAN-based carbon fibers. A 1970 joint technology agreement allowed Union Carbide to manufacture Japan's Toray Industries product. Morganite decided that carbon-fiber production was peripheral to its core business, leaving Courtaulds as the only big UK manufacturer. Courtaulds's water-based inorganic process made the product susceptible to impurities that did not affect the organic process used by other carbon-fiber manufacturers, leading Courtaulds ceasing carbon-fiber production in 1991.

Machiningtitaniumwithout coolant

Carbon fibers are used for fabrication of carbon-fiber microelectrodes. In this application typically a single carbon fiber with diameter of 5–7 μm is sealed in a glass capillary.[21] At the tip the capillary is either sealed with epoxy and polished to make a carbon-fiber disk microelectrode, or the fiber is cut to a length of 75–150 μm to make a carbon-fiber cylinder electrode. Carbon-fiber microelectrodes are used either in amperometry or fast-scan cyclic voltammetry for detection of biochemical signaling.

Major improvements in the rate at which workpieces are machined usually result from the development and application of new tool materials.  In the past several years, there have been major advancements in the development of cutting tools including coated carbides, ceramics, cermets, cubic boron nitride, and polycrystalline diamond.  These have found useful applications in the machining of cast irons, steels, and high-temperature and aluminum alloys.

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Another operation usable in the processing of titanium alloys is the LBT method.  In this process, material is removed by focusing a laser beam and a gas stream on a workpiece.  The laser energy causes localized melting, and an oxygen gas stream promotes an exothermic reaction and purges the molten material from the cut.  Titanium alloys are cut at very rapid rates using a continuous wave CO2 laser with oxygen assist.

For general approximations, the power requirements in turning and milling can be obtained by measuring the power input to the machine tool’s drive motor during a cutting operation and by subtracting from it the tare, or idle power.  A good approximation of the horsepower required in most machining operations can be predicted from unit power requirements.

In 1860, Joseph Swan produced carbon fibers for the first time, for use in light bulbs.[5] In 1879, Thomas Edison baked cotton threads or bamboo slivers at high temperatures carbonizing them into an all-carbon fiber filament used in one of the first incandescent light bulbs to be heated by electricity.[6] In 1880, Lewis Latimer developed a reliable carbon wire filament for the incandescent light bulb, heated by electricity.[7]

Why istitaniumhard tomachine

The increasing use of carbon fiber composites is displacing aluminum from aerospace applications in favor of other metals because of galvanic corrosion issues.[15][16] Note, however, that carbon fiber does not eliminate the risk of galvanic corrosion.[17] In contact with metal, it forms "a perfect galvanic corrosion cell ..., and the metal will be subjected to galvanic corrosion attack" unless a sealant is applied between the metal and the carbon fiber.[18]

In 1958, Roger Bacon created high-performance carbon fibers at the Union Carbide Parma Technical Center located outside of Cleveland, Ohio.[8] Those fibers were manufactured by heating strands of rayon until they carbonized. This process proved to be inefficient, as the resulting fibers contained only about 20% carbon. In the early 1960s, a process was developed by Dr. Akio Shindo at Agency of Industrial Science and Technology of Japan, using polyacrylonitrile (PAN) as a raw material. This had produced a carbon fiber that contained about 55% carbon. In 1960 Richard Millington of H.I. Thompson Fiberglas Co. developed a process (US Patent No. 3,294,489) for producing a high carbon content (99%) fiber using rayon as a precursor. These carbon fibers had sufficient strength (modulus of elasticity and tensile strength) to be used as a reinforcement for composites having high strength to weight properties and for high temperature resistant applications.

A program to define the effect of experimental chlorinated and sulfurized cutting fluids on the mechanical properties of the Ti-6AL-4V alloy (annealed, 34 Rc) was performed.  Mechanical property evaluations included:

Machiningtitaniumvs aluminum

The atomic structure of carbon fiber is similar to that of graphite, consisting of sheets of carbon atoms arranged in a regular hexagonal pattern (graphene sheets), the difference being in the way these sheets interlock. Graphite is a crystalline material in which the sheets are stacked parallel to one another in regular fashion. The intermolecular forces between the sheets are relatively weak Van der Waals forces, giving graphite its soft and brittle characteristics.

Titanium’s fatigue properties are strongly influenced by a tendency to surface damage if certain machining techniques are used.  Care must be exercised to avoid the loss of surface integrity, especially during grinding.  (This characteristic is described in greater detail below.)

Carbon fiber is frequently supplied in the form of a continuous tow wound onto a reel. The tow is a bundle of thousands of continuous individual carbon filaments held together and protected by an organic coating, or size, such as polyethylene oxide (PEO) or polyvinyl alcohol (PVA). The tow can be conveniently unwound from the reel for use. Each carbon filament in the tow is a continuous cylinder with a diameter of 5–10 micrometers and consists almost exclusively of carbon. The earliest generation (e.g. T300, HTA and AS4) had diameters of 16–22 micrometers.[12] Later fibers (e.g. IM6 or IM600) have diameters that are approximately 5 micrometers.[12]

Carbon fiber can be used as an additive to asphalt to make electrically conductive asphalt concrete.[19] Using this composite material in the transportation infrastructure, especially for airport pavement, decreases some winter maintenance problems that lead to flight cancellation or delay due to the presence of ice and snow. Passing current through the composite material 3D network of carbon fibers dissipates thermal energy that increases the surface temperature of the asphalt, which is able to melt ice and snow above it.[20]

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Each carbon filament is produced from a polymer such as polyacrylonitrile (PAN), rayon, or petroleum pitch. All these polymers are known as a precursor. For synthetic polymers such as PAN or rayon, the precursor is first spun into filament yarns, using chemical and mechanical processes to initially align the polymer molecules in a way to enhance the final physical properties of the completed carbon fiber. Precursor compositions and mechanical processes used during spinning filament yarns may vary among manufacturers. After drawing or spinning, the polymer filament yarns are then heated to drive off non-carbon atoms (carbonization), producing the final carbon fiber. The carbon fibers filament yarns may be further treated to improve handling qualities, then wound on to bobbins.[22]

Machining recommendations, such as noted above, may require modification to fit particular circumstances in a given shop.  For example, cost, storage, or requirements may make it impractical to accommodate a very large number of different cutting fluids.  Savings achieved by making a change in cutting fluid may be offset by the cost of changing fluids.  Likewise, it may be uneconomical to inventory cutting tools which may have only infrequent use.  Also, the design of parts may limit the rate of metal removal in order to minimize distortion (of thin flanges, for example) and to corner without excessive inertia effects.  An example of typical machining parameters currently used to machine Ti-6Al-4V bulkheads containing deep pockets, thin flanges, and floors at an important United States airframe manufacturer are shown in Table 6.2. A bulkhead frequently contains numerous pockets and some flanges as thin as 0.76 mm (0.030 in.).  Typical example bulkhead rough forgings weigh in excess of 450 kg (1000 lb), but the finished part is less than 67.5 kg (150 lb) after machining. Extensive machining is done on gas turbine engine components, just as is done on the larger airframe components.  Table 6.3 lists typical parameters for machining Ti-6Al-4V jet engine components such as fan disks, spacers, shafts, and rotating seals.

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There are excellent cutting fluids available which do not contain any halogen compounds.  In fact, from extensive test data collected by the Air Force Materials Laboratory, it can be concluded that chlorine-containing cutting fluids do not always provide better tool life.  For certain alloys and operations, dry machining is preferred.  Usually the heavy chlorine-bearing fluids excel in operations such as drilling, tapping, and broaching.

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20221130 — Conventional Machining Process. Also known as traditional machining in manufacturing, this process involves the use of cutting tools to remove ...

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ECM is the removal of electrically conductive material by anodic dissolution in a rapidly flowing electrolyte which separates the workpiece from a shaped electrode.  ECM can generate difficult contours and provide distortion-free, high quality surfaces.  For ECM of titanium alloys, a very common electrolyte is sodium chloride used at concentrations of about 1 lb/gal.

The technology supporting the machining of titanium alloys basically is very similar to that for other alloy systems.  Efficient metal machining requires access to data relating the machining parameters of a cutting tool to the work material for the given operation.  The important parameters include:

Machinists and companies specializing in the machining of aerospace materials generally will have developed techniques to maximize surface integrity of titanium alloys.  Thus optimum properties usually are achieved during the production machining of titanium.  In those areas of application where maximum fatigue strength is required, not only are appropriated machining parameters used, but also selected surface areas of components may be glass bead blasted to restore, or to retain, a high level of favorable compressive surface stress.

The cutting force is important since, when multiplied by the cutting velocity, it determines the power requirements in titanium machining.  The thrust, or separating force, determines the accuracy produced on a part.

Although the basic machining properties of titanium metal cannot be altered significantly, their effects can be greatly minimized by decreasing temperatures generated at the tool face and cutting edge.  Economical production techniques have been developed through application of these basic rules in machining titanium:

A common method of manufacture involves heating the spun PAN filaments to approximately 300 °C in air, which breaks many of the hydrogen bonds and oxidizes the material. The oxidized PAN is then placed into a furnace having an inert atmosphere of a gas such as argon, and heated to approximately 2000 °C, which induces graphitization of the material, changing the molecular bond structure. When heated in the correct conditions, these chains bond side-to-side (ladder polymers), forming narrow graphene sheets which eventually merge to form a single, columnar filament. The result is usually 93–95% carbon. Lower-quality fiber can be manufactured using pitch or rayon as the precursor instead of PAN. The carbon can become further enhanced, as high modulus, or high strength carbon, by heat treatment processes. Carbon heated in the range of 1500–2000 °C (carbonization) exhibits the highest tensile strength (5,650 MPa, or 820,000 psi), while carbon fiber heated from 2500 to 3000 °C (graphitizing) exhibits a higher modulus of elasticity (531 GPa, or 77,000,000 psi).

In recent years, ceramic tools have been used successfully in machining high-temperature alloy jet-engine components at speeds much higher than those conventionally used.  At speeds of 183 to 213 m/min (600 to 700 ft/min), tool life is short (3 to 5 min), but it is possible to finish a cut at these speeds and then index the cutting tip for making the next pass.  This same technique has potential in machining of titanium with C-2 carbides.  Data are needed to determine the speeds at which reproducible and reliable tool life of the order of 3 to 5 min can be obtained, and to determine whether these conditions improve the economics of titanium machining.

Precursors for carbon fibers are polyacrylonitrile (PAN), rayon and pitch. Carbon fiber filament yarns are used in several processing techniques: the direct uses are for prepregging, filament winding, pultrusion, weaving, braiding, etc. Carbon fiber yarn is rated by the linear density (weight per unit length; i.e., 1 g/1000 m = 1 tex) or by number of filaments per yarn count, in thousands. For example, 200 tex for 3,000 filaments of carbon fiber is three times as strong as 1,000 carbon filament yarn, but is also three times as heavy. This thread can then be used to weave a carbon fiber filament fabric or cloth. The appearance of this fabric generally depends on the linear density of the yarn and the weave chosen. Some commonly used types of weave are twill, satin and plain. Carbon filament yarns can also be knitted or braided.

Tool-life data have been developed experimentally for a wide variety of titanium alloys.  A common way of representing such data is shown in is where tool life (as time) is plotted against cutting speed (fpm) for a given cutting tool material at a constant feed and depth in relation to Ti-6Al-4V.  It can be seen that at a high cutting speed, tool life is extremely short.  As the cutting speed decreases, tool life dramatically increases.

One of the practical techniques for increasing productivity is to determine the optimum cost in machining a given titanium part for a specific machining operation.  If specific data are available relating tool life to speed, feed, and depth for a given operation and cutter, it is possible to calculate the overall cost and time of machining as a function of the cutting parameters.  Some companies are now using computers to perform such cost analyses and to arrive at minimum costs and optimum production rates for specific machining operations.

Titanium has a strong alloying tendency or chemical reactivity with materials in the cutting tools at tool operating temperatures.  This causes galling, welding, and smearing along with rapid destruction of the cutting tool.

Turningtitanium

The design of titanium alloy components often requires the use of the so-called nontraditional machining methods.  Among these electrochemical machining (ECM), chemical milling (CHM), and laser beam torch (LBT) are probably the most widely used.   Technical information on procedures and techniques is generally proprietary, however.

Titanium’s work-hardening characteristics are such that titanium alloys demonstrate a complete absence of “built-up edge.”  Because of the lack of a stationary mass of metal (built-up edge) ahead of the cutting tool, a high shearing angle is formed.  This causes a thin chip to contact a relatively small area on the cutting tool face and results in high bearing loads per unit area.  The high bearing force, combined with the friction developed by the chip as it rushes over the bearing area, results in a great increase in heat on a very localized portion of the cutting tool.  Furthermore, the combination of high bearing forces and heat produces cratering action close to the cutting edge, resulting in rapid tool breakdown.

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The inability to improve cutting-tool performance by developing new cutting-tool materials—coatings in particular—has been very frustrating.  Likewise, very little improvement in productivity has been experienced by exploring new combinations of speeds, feeds, and depths.  However, developments of interest include specially designed turning tools and milling cuttings along with the use of a special end mill pocketing technique.

Cutting speed and feed are two of the most important parameters for all types of machining operations.  Extensive testing has developed the tool-life data and tool life charts are available now available. One Manufacturer offers the following general guidelines for typical machining operations.

Titanium alloys are very sensitive to changes in feed.  Industry generally operates at cutting speeds providing long tool life.  Curve fitting of tool life to feed, speed, and other titanium machining parameters is commonly being done by means of computer techniques.  However, in cases where no data base exists, certain rules of thumb should be recognized.  For example, when cutting titanium, a high shear angle is produced between the workpiece and chip, resulting in a thin chip flowing at high velocity over the tool face.  High temperatures develop, and, since titanium has low thermal conductivity, the chips have a tendency to gall and weld themselves to the tool cutting edges.  This speeds up tool wear and failure.  When dealing with high-fixed-cost machine tools production output may be much more important than a cutting tool’s life!  It thus may be wise to work a tool at its maximum capacity, and then replace it as soon as its cutting efficiency starts to drop off noticeably, thereby maintaining uptime as much as possible.

Machiningtitaniumvs stainless steel

We offer the following technical information on the machinability of Titanium. This information is derived from the ASTM Technical guide to Titanium and should be used for reference knowledge.

Today, the situation is much the same.  C-2 carbides are used extensively in engine and airframe manufacturing for turning and face milling operations.  In recent years, in the United States as well as in Europe, solid C-2 end mills and end mills with replaceable C-2 carbides are finding applications, particularly in aerospace plants.  Today, the M7 and, more frequently, the M42 and M33 high-speed steels are recommended for end milling, drilling, and tapping of titanium alloys.

Cutting fluids used in machining titanium alloys require special consideration because chlorine ions have, under certain circumstances, caused stress-corrosion cracking in laboratory testing of these alloys for mechanical properties.  Consequently, chlorine at one time was considered a suspect element regardless of the concentration and specific conditions used in manufacturing operations, such as machining.

Carbon fiber can have higher cost than other materials which has been one of the limiting factors of adoption. In a comparison between steel and carbon fiber materials for automotive materials, carbon fiber may be 10-12x more expensive. However, this cost premium has come down over the past decade from estimates of 35x more expensive than steel in the early 2000s.[13]

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The high potential strength of carbon fiber was realized in 1963 in a process developed by W. Watt, L. N. Phillips, and W. Johnson at the Royal Aircraft Establishment at Farnborough, Hampshire. The process was patented by the UK Ministry of Defence, then licensed by the British National Research Development Corporation to three companies: Rolls-Royce, who were already making carbon fiber; Morganite; and Courtaulds. Within a few years, after successful use in 1968 of a Hyfil carbon-fiber fan assembly in the Rolls-Royce Conway jet engines of the Vickers VC10,[9] Rolls-Royce took advantage of the new material's properties to break into the American market with its RB-211 aero-engine with carbon-fiber compressor blades. Unfortunately, the blades proved vulnerable to damage from bird impact. This problem and others caused Rolls-Royce such setbacks that the company was nationalized in 1971. The carbon-fiber production plant was sold off to form Bristol Composite Materials Engineering Ltd[10] (often referred to as Bristol Composites).

Carbon fibers or carbon fibres (alternatively CF, graphite fiber or graphite fibre) are fibers about 5 to 10 micrometers (0.00020–0.00039 in) in diameter and composed mostly of carbon atoms.[1] Carbon fibers have several advantages: high stiffness, high tensile strength, high strength to weight ratio, high chemical resistance, high-temperature tolerance, and low thermal expansion.[2] These properties have made carbon fiber very popular in aerospace, civil engineering, military, motorsports, and other competition sports.[3] However, they are relatively expensive compared to similar fibers, such as glass fiber, basalt fibers, or plastic fibers.[4]

Depending upon the precursor to make the fiber, carbon fiber may be turbostratic or graphitic, or have a hybrid structure with both graphitic and turbostratic parts present. In turbostratic carbon fiber the sheets of carbon atoms are haphazardly folded, or crumpled, together. Carbon fibers derived from polyacrylonitrile (PAN) are turbostratic, whereas carbon fibers derived from mesophase pitch are graphitic after heat treatment at temperatures exceeding 2200 °C. Turbostratic carbon fibers tend to have high ultimate tensile strength, whereas heat-treated mesophase-pitch-derived carbon fibers have high Young's modulus (i.e., high stiffness or resistance to extension under load) and high thermal conductivity.

As stated, loss of surface integrity must be avoided.  If this precaution is not observed, a dramatic loss of mechanical behavior (such as fatigue) can result.  Even proper grinding practices using conventional parameters (wheel speed, downfeed, etc.) may result in appreciably lower fatigue strength due to surface damage.  The basic fatigue properties of many titanium alloys rely on a favorable compressive surface stress induced by tool action during machining.  Electromechanical removal of material, producing a stress-free surface, can cause a debit from the customary design fatigue strength properties.  (These results are similar when mechanical processes such as grinding are involved, although the reasons are different.)

Unfortunately, none of these or other new materials has improved the removal rate of titanium alloys.  In studies conducted as early as 1950, the straight tungsten carbide (WC) cutting tools, typically C-2 grades, performed best in operations such as turning and face milling, while the high-cobalt, high-speed steels were most applicable in drilling, tapping, and end milling.

Titaniummillingmachine

Despite being known for their electrical conductivity, carbon fibers can carry only very low currents on their own. When woven into larger fabrics, they can be used to reliably provide (infrared) heating in applications requiring flexible electrical heating elements and can easily sustain temperatures past 100 °C. Many examples of this type of application can be seen in DIY heated articles of clothing and blankets. Due to its chemical inertness, it can be used relatively safely amongst most fabrics and materials; however, shorts caused by the material folding back on itself will lead to increased heat production and can lead to a fire.

The surface of titanium alloys is thought to be easily damaged during some traditional machining operations.  Damage appears in the form of micro-cracks; built-up edge; plastic deformation; heat-affected zones; and tensile residual stresses.  In service, this damage can lead to degraded fatigue strength and stress corrosion resistance.  In a study of grinding effects on Ti-6Al-4V alloy, gentle or low-stress grinding parameters displayed no readily identifiable changes at the surface, while conventional and abusive practices altered the surface layer noticeably.  There was an appreciable drop in hardness in the gently ground specimen, but very good high-cycle-fatigue values were noted.

Within the scope of the program, and within the range of variables investigated, the results indicated generally that no degradation of mechanical properties relative to those obtained from neutral cutting fluids occurred.  Similar results were obtained by using chlorinated and sulfurized fluids in machining, or by having those cutting fluids present as an environment during testing.  The use of chlorine-containing (or halogen-containing) cutting fluids generally is not a recommended practice, despite the above-noted results which pertain to only a single titanium alloy.

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To produce a carbon fiber, the carbon atoms are bonded together in crystals that are more or less aligned parallel to the fiber's long axis as the crystal alignment gives the fiber a high strength-to-volume ratio (in other words, it is strong for its size). Several thousand carbon fibers are bundled together to form a tow, which may be used by itself or woven into a fabric.

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The forces in machining can be determined with a tool dynamometer.  In turning, the tool dynamometer usually measures three components:

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Titanium has a relatively low modulus of elasticity, thereby having more “springiness” than steel.  Work has a tendency to move away from the cutting tool unless heavy cuts are maintained or proper backup is employed.  Slender parts tend to deflect under tool pressures, causing chatter, tool rubbing, and tolerance problems.  Rigidity of the entire system is consequently very important, as is the use of sharp, properly shaped cutting tools.

Chemical and electrochemical methods of metal removal are expected to be used increasingly in years to come, because of their many favorable features.  They are particularly useful for rapid removal of metal from the surface of formed or complex-shaped parts, from thin sections, and from large areas down to shallow depths.  These processes have no damaging effect on the mechanical properties of the metal.  (See the earlier comments about fatigue properties of stress-free surfaces.)  There is no hydrogen entry into the metal to cause embrittlement or loss of ductility.

When machining titanium in circumstances in which production costs are not of paramount concern, it is still unsound practice to allow tools to run to destruction.  The other extreme, premature tool changing, may result in a low number of pieces per tool grind, but the lower the tool wear, the less expensive the regrinding.

Titanium has an endurance limit of 372 MPa (54 ksi) for the gentle grinding and values of 83 and 97 MPa (12 and 14 ksi) for conventional and abusive conditions, respectively.  As can be seen, in operations like end mill cutting or turning, the same sensitivity to abusive conditions was not observed, possibly due to residual surface compressive stresses.

CNCmachinefortitanium

Carbon fibers are usually combined with other materials to form a composite. For example, when permeated with a plastic resin and baked, it forms carbon-fiber-reinforced polymer (often referred to as carbon fiber), which has a very high strength-to-weight ratio and is extremely rigid although somewhat brittle. Carbon fibers are also composited with other materials, such as graphite, to form reinforced carbon-carbon composites, which have a very high heat tolerance.

During the 1960s, experimental work to find alternative raw materials led to the introduction of carbon fibers made from a petroleum pitch derived from oil processing. These fibers contained about 85% carbon and had excellent flexural strength. Also, during this period, the Japanese Government heavily supported carbon fiber development at home and several Japanese companies such as Toray, Nippon Carbon, Toho Rayon and Mitsubishi started their own development and production. Since the late 1970s, further types of carbon fiber yarn entered the global market, offering higher tensile strength and higher elastic modulus. For example, T400 from Toray with a tensile strength of 4,000 MPa and M40, a modulus of 400 GPa. Intermediate carbon fibers, such as IM 600 from Toho Rayon with up to 6,000 MPa were developed. Carbon fibers from Toray, Celanese and Akzo found their way to aerospace application from secondary to primary parts first in military and later in civil aircraft as in McDonnell Douglas, Boeing, Airbus, and United Aircraft Corporation planes. In 1988, Dr. Jacob Lahijani invented balanced ultra-high Young's modulus (greater than 100 Mpsi) and high tensile strength pitch carbon fiber (greater than 500 kpsi) used extensively in automotive and aerospace applications. In March 2006, the patent was assigned to the University of Tennessee Research Foundation.[11]

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Carbon fiber-reinforced materials are used to make aircraft and spacecraft parts, racing car bodies, golf club shafts, bicycle frames, fishing rods, automobile springs, sailboat masts, and many other components where light weight and high strength are needed.

CHM is the controlled dissolution of a workpiece material by contact with a strong chemical reagent.  The part being processed is cleaned thoroughly and covered with a strippable, chemically-resistant mask.  Areas where chemical action is desired are stripped off the mask, and then the part is submerged in the chemical reagent to dissolve the exposed material.

Ideally, a tool should be permitted to continue cutting as long as possible without risking damage to the tool or the work but with the retention of surface integrity.  The only way to find a safe stopping point is to check a few runs by counting the pieces produced and inspecting the surface finish, dimensions, and surface integrity.  In this manner it can be established how many acceptable pieces can be produced before the tool fails.

The term “machining” has broad application and refers to all types of metal removal and cutting processes.  These include turning, boring, milling, drilling, reaming, tapping, both sawing and gas cutting, broaching, planing, gear hobbing, shaping, shaving, and grinding.

When specifying cutting fluids for machining titanium, some companies have practically no restrictions other than using controlled-washing procedures on parts after machining.  Other manufacturers do likewise, except that they do not use cutting fluids containing chlorine on parts which are subjected to higher temperatures in welding processes or in service.  Also when assemblies are machined, the same restrictions apply because of the difficulty in doing a good cleaning job after machining.  Still other organizations in aerospace manufacturing permit no active chlorine in any cutting fluid used for machining titanium alloys.

Carbon fiber is most notably used to reinforce composite materials, particularly the class of materials known as carbon fiber or graphite reinforced polymers. Non-polymer materials can also be used as the matrix for carbon fibers. Due to the formation of metal carbides and corrosion considerations, carbon has seen limited success in metal matrix composite applications. Reinforced carbon-carbon (RCC) consists of carbon fiber-reinforced graphite, and is used structurally in high-temperature applications. The fiber also finds use in filtration of high-temperature gases, as an electrode with high surface area and impeccable corrosion resistance, and as an anti-static component. Molding a thin layer of carbon fibers significantly improves fire resistance of polymers or thermoset composites because a dense, compact layer of carbon fibers efficiently reflects heat.[14]

An advantageous material, Composites offer unique advantages to machinists but must be machined with the right set of tooling options to avoid common mishaps.