You should use tools made from carbide when machining aluminium. The higher speed, sharper-for-longer carbide cutters create a greater shearing force. This reduces the amount of that long stringy aluminium swarf that ends up fouling the cutter.

It’s a bad decision, said Richmond. Not only does it put the patient’s Medicare ID in the hands of fraudsters who can then keep reselling it for illicit purposes, but it can potentially compromise unique details of an individual’s make-up.

Machining aluminium at high speeds results in a large amount of waste material being rapidly produced. This can cause its own problems...

A milling cutter is a rotating tool used in milling machines to remove material from a workpiece. It has multiple cutting edges (teeth) ...

High-Speed Steel is not strong enough under the cutting conditions required for aluminium. As aluminium is relatively soft to cut, you should prioritize tool hardness over tool toughness. A harder tool material will allow the cutting edge to stay sharp for longer. Maintaining a sharp cutting edge will create a better finish. It will also reduce friction and reduce the amount of aluminium deposited on the cutting edge.

Of course, cutting any material too fast will result in the familiar sound of the broken tool flying over your shoulder and hitting the wall!

What about those nice-looking gold TiN coated end-mills? Don’t bother. The coating is designed to improve wear resistance when machining more abrasive materials. It is rougher and more chemically reactive with aluminium than the bare tool. Both of these factors will combine to increase the amount of aluminium that adheres to the tool. The same applies to TiAlN, TiCN, and AlTiN.

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The alleged scheme worked like this: Officials said a telemarketing or in-person ‘‘recruiter’’ would convince a Medicare enrollee to take a genetic test, assuring them that the program would pay the full cost. The patient would provide their Medicare information. A doctor in league with the fraudsters would approve the test, and collect a kickback from the recruiter company. A lab participating in the scheme would run the test, bill Medicare, and share payments collected from the government with the recruiter.

But, if you try to make a full diameter cut through aluminium with a 4-flute end mill the flutes will clog up and the end mill will break. Which brings us nicely on to...

There was no single organization behind the fraud. Friday’s operation targeted defendants in Florida, Georgia, Louisiana, and Texas, the Justice Department said. Nine doctors were among those charged. Others included owners of telemedicine companies and testing labs.

Sep 14, 2024 — Other articles where free-machining steel is discussed: steel: Free-machining steels: This group, developed for good machinability and ...

Not only will the chips stick to the cutter when heated, but they will also stick to the workpiece. This causes the work-hardening of the material surfaces. It also degrades the quality of the surface finish and can affect part tolerances.

Dubbed ‘‘Operation Double Helix,’’ the crackdown targeted telemedicine companies, doctors, and labs, in a joint effort by the Justice Department, the FBI, US attorneys’ offices, and the Health and Human Services inspector general. Thirty-five people were charged around the country.

Still having problems? CNC Solutions has extensive experience machining a wide range of materials including aluminium. We can show you the right way to do it on a CNC training course in our cutting edge CNC Training Center.

Cross-cutting is an editing technique most often used in films to establish action occurring at the same time, and often in the same place. In a cross-cut, ...

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Most probably, you have faced this problem when machining aluminum. You stick down a new type of material and try the machine set-up you used last time. BANG! What happened? It is supposed to be easy to machine aluminium, right?

In summary, aluminum is eminently machinable but it isn’t without it’s quirks. Understanding how material behaves is the best way to learn how to machine it more effectively. Make sure your feeds & speeds are right. Use a two-flute, uncoated carbide cutter and don’t let the tool get clogged up with aluminium chips.

Another downside: Medicare might deny future coverage for genetic testing when it’s really needed, since the patient’s record would show such an analysis was already done. Patients should only have genetic testing if their own doctor orders it, officials said.

‘‘A decade ago, it would have given Medicare beneficiaries pause if someone wanted to get a swab from their cheek of their saliva,’’ said Shimon Richmond, who heads the inspector general’s investigative division. ‘‘Today people know and recognize what (genetic testing) is, and they think ‘I can get that done, and I can get it done for free and find out if I have health issues that I need to address.’ ’’

‘‘I feel stupid, and in the meantime, I’m furious,’’ Morris said. Health fairs, church events, and senior centers are like magnets for the fraudsters, officials said.

WASHINGTON — Federal agents took down an alleged Medicare scam Friday that exploited seniors’ curiosity about genetic medicine by enticing them to get their cheeks swabbed for unneeded DNA tests. Medicare was billed $2.1 billion.

Machining aluminium is often characterized by a high spindle speed. Be wary of combining high spindle RPMs with feed rates that are too slow. As the tool will spend more time rubbing against the aluminium than cutting it. This will increase the working temperature and drastically reduce your tool life.

Aluminium requires less cutting force than harder materials like steel. But aluminium is softer and melts at a much lower temperature. This means it can be all too easy for the loose chips of material to overheat and fuse to the tool. In small quantities, this dulls the cutting edge causing greater mechanical load on the cutter and a further build-up of heat. This can then lead to premature tool failure.

Morris said she was never billed, and was never sent results. When she looked up the address for the test vendor it was ‘‘a house on a back road.’’

The softer the material that you are cutting is, the faster the recommended cutting speed. At 300-600 meters per minute (using a carbide tool) aluminium has a similar cutting speed to wood. But unlike when cutting wood, the optimal feeds and speeds for your set-up will be in a much tighter range.

Chucking Reamers · Intended for use in drill presses, lathes and screw machines · Most commonly used style for reaming holes to a tight tolerance · Come in ...

‘‘Their ploy was, ‘Get a mouth swab and we can analyze how well your system synthesizes the drugs you are taking,’ ” she said. ‘‘It never crossed my mind there was anything wrong with this.’’

Superiorly, the antihelix divides into a superior and inferior crus, which surround the fossa triangularis. The depression between the helix and antihelix is ...

One of the biggest issues when machining aluminium is chip removal. Especially when cutting deep pockets into the material. The deeper the cut the more difficult it is to remove the chips from the bottom of the pocket. A build-up of chips at the bottom of a pocket is the fastest way to turn your cutter into an aluminium popsicle.

Fraudsters preyed on people’s fears of harboring genetic markers for cancer. However, genetic testing is not routinely used to screen for cancer.

Fewer flutes do decrease tool rigidity. So use the shortest tool possible for your application and watch out for tool deflection. Particularly when using small diameter end-mills.

Medicare enrollee Linda Morris of Parker City, Ind., said she was roped in at a conference on aging well. The retired high school math and journalism teacher got her cheek swabbed by one of the many health vendors at the event.

Bills to Medicare connected with the scam typically ranged from $7,000 to $12,000, Richmond said, with some much higher. In many cases the patient never got a report back, or the results provided were incomprehensible. Medicare paid out hundreds of millions of dollars before authorities detected the fraud and moved in.

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The most important factor in choosing a cutting tool for aluminium is the need to maximize space for chip evacuation. The more flutes a cutter has, the less space there is to evacuate chips. Two flute cutters are ideal, with single and three flute tools also being effective.

May 29, 2018 — The main difference between climb and conventional cutting is how the cutter bites into the material. A conventional cut deflects the bit towards the cut and a ...

Milling Formula Calculator. ... Enter RPM. /, = INCHES PER MINUTE FEED RATE (IPM). Enter RPM, Enter IPT, Enter Z.