Carbon fibermachining service

Cobalt drill bits have a recognizable gold color. Although it looks like a coating, it’s not, and is the result of a “baking” process that the drill bits go through. It may wear off with use, but this won’t impact the quality of the drill bit.

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Cobalt drill bits are made with a steel alloy containing 5-8% cobalt, so they can be used to cut into steel and other hard metals like cast iron.

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Due to carbon fiber’s abrasion on the cutting tools, a rapid decrease in cutting quality will occur as soon as the tool begins to dull. Fibers will be grabbed instead of fractured, causing fraying and damage to the part. Therefore, tool life should be vigilantly monitored to replace the tool before reaching the point of dullness.

We have multiple locations around the U.S., ensuring that you can get your tools treated in a timely manner. By having your carbide drill bits treated in advance, you can cut down on delays and downtime later.Contact us today to get a free quote and learn more about the process!

Unlike metal machining where tools may be utilized until they show signs of wear, this method would be unideal for CFRP as the highly expensive part could be ruined or damaged causing scrapping costs and time. It is good practice to take preventative measures by taking note of typical wear of your tools and using that information to set tool changes before it dulls. Noting tool changes and having high interval checks on cutting and dimension quality will aid in avoiding poor finish or scrapping. Some machines are equipped with tool life management systems which will greatly reduce the chances of having to scrap a part because of tool dullness.

Cryogenic treatment is a one-time process that involves cooling the metal to cryogenic temperatures (–238 °F or below) with the help of a cryogenic liquid or gas. Then, it can be heated back up to a higher temperature and allowed to cool naturally.

Even the most high-quality drill bits are going to wear down after a while, at which point you have to decide whether it’s better to sharpen them or replace them. Due to the high cost of carbide drill bits, it’s probably worth your while to sharpen them.

However, you can’t simply use any sharpener on your carbide drill bits. You’ll need the right tool for the job, which in this case is a diamond-surface grinding wheel.

In some cases, the drill bit will be made out of a less brittle material, and only the tip will be made out of carbide. That way, you get the hardness of carbide on the drilling surface, with the stability of a less brittle material to prevent the bit from breaking.

CTP Cryogenics has over 30 years of experience in the field of thermal processing. We work with carbide tools of all kinds, using a proprietary treatment process that’s tailored to your specific use case and industry.

They are 5/8″ high with the 3/8″ x 16 tpi internal thread and use a 7/16″ drill bit. Always drill the hole 1/4″ – 3/16″ deeper to allow for air compression when ...

In metal machining, the tool cuts away at material, forming chips. This is possible due to the formation of the metal having natural fracture and stress lines that can be wedged by the cutting tool to create a chip. Unlike metals, machining carbon fiber does not peel away material but rather fracture and break the fibers and resin.

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Jul 8, 2024 — Carbon fiber is an amazing material that can improve many aspects across industries; however, the waste generated is not going anywhere but a landfill.

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How do you know if you should use a carbide or cobalt drill bit? Although both types of drill bits have their uses, they can’t be used interchangeably, so it’s important to use the right one for the task at hand. Let’s take a look at the pros and cons of each:

Being that chips are not formed when machining CFRP, and instead, the material is fractured, it creates dust that can spread throughout the air and other surfaces. Not only does this cause hazardous conditions for anyone nearby who may inhale the dust, but the dust is also conductive, which can ruin electronics. To avoid these issues, two different extraction methods can be used depending on the needs of the application.

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The type of drill bit that you need depends on several factors, including the material that you’re cutting, but also the length of drill bit that you need. Longer drill bits can be more brittle and break easily, even if they’re made out of a strong material.

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Titanium drill bits are usually made out of steel with a titanium coating, so they aren’t as strong as cobalt drill bits, and are liable to lose their coating over time.

Then there’s carbide, which in this case is actually tungsten carbide and is a compound of tungsten and carbon. Carbide drill bits are often made out of steel with a carbide tip. They’re commonly used in industrial applications due to their superior strength. They can cut through concrete, masonry, tile, and more.

Having a set process that is consistent and reliable is important in helping to prevent scrapping. Eliminating human error with machines that can monitor the entire process while automating tool changes when tools are worn, avoids issues before they can happen. A key factor is ensuring the setup is correct, having the right tooling, tool path, and coolant option to perform the operation effectively and accurately. With some parts serving critical functions and with a high cost, there is no exception for poor finish or incorrect cuts emphasizing the importance of having a procedure that gets the job done the right way.

Feed equals .001" per revolution for every 1/16" of drill diameter, plus or minus .001" on the total. Speed equals 80 surface feet per minute in 100 Brinell ...

It might seem counter-intuitive, but carbide is both the hardest drill bit – up to five times harder than steel – as well as the most brittle. That’s because, when it comes to tools, hardness is just one of the factors that determines a material’s overall strength.

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Jun 24, 2019 — Regular coated carbide cuts glock slides fine. They are melonited, so once you get under the case hardened skin it's just regular med carbon steel.

Drill bits that are cryogenically treated have been shown to drill twice as many holes as drill bits that aren’t, before needing to be replaced. The treatment process changes the carbide’s microstructure, resulting in drill bits that are 7% harder.

Let’s take a look at the hardness of each type of drill bit, as well as some of the things to keep in mind when choosing between carbide and cobalt drill bits.

Whether you rely on carbide drill bits, inserts, cutters, end mills, or any other tool, you can increase their lifespan and reduce downtime with cryogenic treatment.

When machining CFRP, the suggested running parameters are to have a high RPM with low feed rates. Feed rates will need to be adjusted to account for heat minimization, while RPMs may need to be dialed back to prevent excessive fraying, tearing, or splitting of fibers when cutting.

This is because the temperatures that your drill bits are subjected to when they’re first made has a long-term impact on the quality of the finished product.

Within the aerospace industry, drilling is the most common application in machining. Like milling, performing operations such as pecking may be preferred even with increased cycle time if it reduces any chances of error that result in scrapping of the part.

Because they can handle temperatures as high as 1100 °F, cobalt drill bits can be used in high-heat settings. The higher the percentage of cobalt, the more heat-resistant it will be; at the same time, a higher percentage of cobalt means it will be more brittle.

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Carbide inserts can be used to work with cast iron and steel, as well as bronze, copper, aluminum, and other hard or abrasive materials.

This Applied Science video shows how you can do it at home with liquid nitrogen, but for best results, we recommend choosing a professional.

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That’s why they’re primarily used in automated equipment, and aren’t designed for use in hand drills and other manual processes where they can snap under pressure. You’ll find them in a range of industries, such as automotive and aerospace factories, where only the hardest drill bit tips will do.

In this article, we’re going to take a look at the key characteristics of a drill bit – including the metal it’s made out of, its tip, and its coating – as well as how you can use cryogenic processing to make your drill bits stronger and longer-lasting.

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High-speed steel (HSS) is commonly used in drill bits and power saw blades because it’s affordable and capable of cutting through wood, plastic, and soft steel. HSS drill bits cut faster than other types of steel, which is where they get their name.

Hardness refers to the surface of the material – essentially, how easy it is to scratch or dull its surface – while brittleness refers to how easy it is to break. So while carbide drill bits are very hard, and can cut through some of the most difficult materials, they’re also brittle and can break if not used properly.

If you don’t have a grinding wheel at your disposal, then it may be more cost-effective to hire a professional to do it for you. So while you can sharpen carbide drill bits yourself, it requires specific tools and you may need some training to get it right.

Cobalt drill bits are ideal for when you need to drill through hard metals. They come in two grades: M35, which is made of 5% cobalt, and M42, which is made of 8% cobalt.

Carbide tips can drill through hard, non-metallic materials like masonry, while full-body drill bits are primarily used in automated processes.

Composite holemaking or drilling is found to be more challenging than milling carbon fiber. It generates more dust due to the drilling speed. Using specific tooling for composites will be crucial in effective drilling. When machining holes, the carbon fiber will relax, creating undersized holes which requires extensive adjustments that are best automated for efficiency.

Since each tool has a specific concentration of tungsten carbide, it may take multiple tries to find the right treatment process for your drill bits.

Other tools use carbide inserts, which are often triangular or diamond in shape, and are inserted into a tool made out of another metal, such as carbon steel. The benefit of this approach is that the tool is less brittle overall, and you can rotate the carbide inserts to expose a different edge when the cutting side becomes dull.

For help mitigating the challenges of composite holemaking, read Overcoming Composite Holemaking Challenges and browse CoreHog’s offering of drills, specially engineered to mitigate all-too-common holemaking headaches. To achieve better finish and avoid delamination, it is recommended to utilize conventional milling over climb milling within composites contrary to what is recommended in metal machining.

The two options for dust extraction are using coolant (wet) or vacuuming (dry). Choosing between the two is dependent on the application, but mostly dictated by the size of the application. Smaller scale machining can be contained through vacuuming, but larger applications would require coolant as vacuuming a large area may be challenging. If a lot of heat will be generated, then it is necessary to have a water-soluble coolant. This would also benefit the use of diamond tooling as they will wear faster at lower temperatures in comparison to carbide tooling. Another would be the dust collection would remain contained with the liquid preventing any airborne exposure.

One benefit of vacuuming over coolant is the disposal process. After machining, the coolant/dust mix would require post-treatment to remove excess water before being transferred to a landfill. This would incur additional costs to the process which may cause some to lean towards vacuuming if heat is not an issue.

Most metal products are forged or cast at high heat, after which they must be cooled to room temperature. Traditionally, this was done by quenching them in water, but modern cryogenic techniques provide a more controlled treatment process.

With CFRP’s wide range of uses and desirable mechanical properties for its applications, comes the effect of its challenges in machining and high cost of scrapping. Refining this process will be essential for the growing demand of carbon fiber machining in the near future. For more information on CFRP, specifically related to material properties and tool selection, read In the Loupe’s complementary post “Carbon Fiber Reinforced Polymers (CFRP): Material Properties & Tool Selection”.

Carbon Fiber Reinforced Polymers (CFRP) is a collection of carbon fibers that, when bound together via resin, creates a material with a wide range of application possibilities. It’s strong, durable, and resistant to corrosion, making it an advantageous material for use in several advanced industries, including the aerospace and automotive industries. Despite its unique abilities, however, machining CFRP is not without its set of challenges, all of which machinists must be cognizant of to achieve desired results. Once CFRP is properly understood and the right cutting tool is selected for the job, the next step is to properly set running parameters for your application.

Another option is to treat your drill bits cryogenically to reduce wear and make them last longer without the need for frequent sharpening. Although cryogenic treatment is known for its use in manufacturing, including the treatment of aerospace and automotive parts, it can be used to extend the life of cutting tools as well.

However, while high-speed steel is capable of many types of maintenance tasks, it isn’t suitable for more industrial uses, which is where other materials come in.

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The use of coolant when machining CFRP can either benefit or negatively affect the part depending on the application. The preferred coolant of choice for machining carbon fiber is typically using water or a water-soluble coolant. This is due to composites having a porous surface that could allow contaminates to enter the part itself. By using water, it prevents any issues after machining where adhesives or paint may need to be applied to the part that otherwise would not have adhered properly with contaminates present.

Many composite parts are unique in shape and size with custom molded designs that create a large initial cost prior to the machining stage. After the part is molded near to its shape, machining is often used to finish the part or drill holes where needed to finalize the part.

They stay sharper longer than cobalt drill bits do, and they have a higher cutting speed. They can also handle higher temperatures.

Feed equals .001" per revolution for every 1/16" of drill diameter, plus or minus .001" on the total. Speed equals 80 surface feet per minute in 100 Brinell ...

Drills are one of the most important items in any toolkit. Depending on your industry or product, your drills need to be able to cut holes in wood, plastic, metal, and more – all while adhering to precise measurements and quality standards.

Carbide drill bits are made out of tungsten carbide, although they often contain small amounts of other materials, such as cobalt, to reduce their reactivity with iron. You can usually find carbide drill bits in one of two forms: carbide-tipped or full-body.

First, we need to understand how drill bits are actually constructed. Many drill bits aren’t made of a single element, but are made out of a steel alloy. Some drill bits are tipped or coated with a second material to make them stronger or more resistant to rust.

Cobalt drill bits can be sharpened without losing their strength. They also have a relatively long lifespan, making them an affordable option despite their higher cost.

But the best drill in the world won’t be much use to you if its drill bits aren’t up to the job. No matter how powerful your drill is, what really determines its capabilities is the bit.

Designed to drill through metal and wood for installing computer, security, phone, and cable small wire systems, this flex high speed steel (HSS) drill bit is ...

While every part is different, there is a method for reducing fraying, chipping, or delamination by cutting parallel to the fiber direction when possible. This can be like cutting along the grain of wood instead of cutting perpendicular or at an angle to the grain.