Custom cnc machining Titanium Services

As more machining parts gravitate toward high-difficulty hardware, they must deal with the challenge of cutting titanium—a hard-to-machine metal.

titanium bicycle frame	titanium medical implants & instruments	titanium aerospace parts

As PTJ take on higher-end work, more and more project let it will have to master how to mill titanium, a lightweight metal that's hard to machine. That's because high-end parts, such as aircraft components and medical devices, are often made of this corrosion-resistant material. In fact, titanium and its alloys have already claimed a wide range of aerospace, industrial, marine and commercial applications.
Raising cutting speed is a big no-no when milling titanium because of two reasons. First, even a small increase in cutting speed can significantly exacerbate edge wear. And second, it can cause heat to build up quickly because of the metal's low thermal conductivity. In fact, excessively fast milling may even result in combustion.

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Titanium Machined Parts

PTJ Shop has two ways to improve the efficiency of machining titanium alloy.

• choose the right tool. Carbide—often a shop's go-to material when it comes to difficult jobs—is not necessarily the best choice. Newer generation high-speed steel can be a more suitable selection. That's because carbide's superior wear resistance comes at the cost of bulk toughness. In other words, carbide is not very good at resisting fracturing and chipping—both of which can result in tool failure in titanium milling. A tougher tool—such as one made of high-speed steel—can allow deeper cuts to be taken without the edges chipping. This more tolerant tool material—especially on a less rigid machine tool—will enable a shop to reach a higher metal removal rate through cut depth as opposed to cutting speed.
• make sure that both the interface between the tool and the toolholder and that between the toolholder and the spindle are kept as stiff as possible. Consider a tool with an eccentric relief or a "margin." This can provide process damping, which prevents chatter.Space cutting edges unevenly so they cannot hit the work with uniform frequency, thereby warding off chatter.
  

PTJ Manufacturing Shop Specialize in the machining of different products & hardware in titanium. Applications include medical implants & instruments, aerospace components & parts. Other products include orthopedic implant vertical & horizontal plate with square-headed bolts, bio convex spinal implant device, bone screw & artificial heart pump component.

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Common Material Cost Comparison

Type	General Characteristics	Alloy	Common Applications	Tolerances for a 1/2" Dia. Bar	Material Cost Factor	Machining Cost Factor
Aluminum	Designed for machining	2011	Electronic hardware, endless commercial products	Cold finish +/-.0015	3.8	.6
Stainless steel	Designed for machining, non- magnetic	303	Electronic hardware, automotive, aerospace, medical instruments, and many applications requiring corrosion resistance	Cold finished +/- .002	1.9	2.7
Brass	Strength, corrosion and wear resistance, and excellent machinability	C35300	Well suited for parts with knurling or threading	+0015	3.5	.07
Steel	Designed for excellent machinability. Case hard only	12L14	Endless commercial products; probably more pounds used in turned products than any other material	Cold drawn 0	1	1
Titanium	High strength, light weight, good bio- compatibility	Ti-6Al-4VEli	Medical implants	Ground & polished +/-.002	30.2	6
Magnesium	High strength, light weight, good bio- compatibility	Mg17Al12	Die casting	Ground & polished +/-.002	3-5	7

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