Choosing Your Carbide Grade: A Guide | Modern Machine Shop
WEBOct 30, 2021 · BB64 — PVD grades for nickel-based alloys. BB23 — CVD grades for milling cast iron. NN — Hardness Level: The last two digits, in most cases, reflect the hardness level of the different grades in a series. The number usually ranges from 05 to 45 according to the same system explained above about the grade charts.
Choosing The Right Grinding Wheel | Modern Machine Shop
WEBDec 15, 2000 · Usually vitrified wheels are used at speeds less than 6,500 surface feet per minute. At higher speeds, the vitrified bond may break. Organic bond wheels are generally the choice between 6,500 and 9,500 surface feet per minute. Working at higher speeds usually requires specially designed wheels for high speed grinding.
Electrical Discharge Machining (EDM) | Modern Machine Shop
WEBJul 10, 2021 · Electrical discharge machining, or EDM, is a non-contact process that can machine parts regardless of their hardness. It involves placing an electrode or wire and an electrically conductive workpiece into a circulating dielectric fluid. The fluid acts as an insulator until a specific spark gap and voltage ionizes it and enables a spark to ...
A New Milling 101: Milling Forces and Formulas
WEBMar 21, 2011 · MRR = .200 x 1.64 x 19.5 = 6.4 in3/min. For horsepower at the motor (HPm), use formula: HPm = HPC/E. In determining horsepower consumption, “K” factors must be used. The “K” factor is a power constant that represents the number of cubic inches of metal per minute that can be removed by one horsepower.
A New Milling 101: What Milling Is, Then and Now (Plus a Glossary …
WEBMar 21, 2011 · Part 1: Greater understanding of milling tools, what they can accomplish, and the optimum circumstances in which to employ them, is always valuable. The continuing development in milling tools in the face of changing customer requirements, advanced workpiece materials, and the constant need to improve productivity while reducing costs make this even more important today.
Centerless Grinding: Not Magic! | Modern Machine Shop
WEBDec 15, 2000 · Centerless grinding workblade angles range from 0 to 45 degrees. For most centerless grinding applications, a top blade angle of 30 degrees seems to provide the best results. "The basic rule is the steeper the angle of the blade the faster the rounding action," says Mr. Payne. "There are limits, however.
How to Become a Defense Industry Machined-Parts Supplier
WEBJul 7, 2019 · Defense contractors may have an obligation to solicit the participation of companies with certified status, such as small, minority- or veteran-owned businesses. 3. Register as a supplier. Many defense prime contractors also have registration programs by which subcontractors such as machine shops may apply.
How To Passivate Stainless Steel Parts | Modern Machine Shop
WEBOct 1, 2003 · This method of passivation can be accomplished in less than 2 hours. Here is the step-by-step procedure: After degreasing, soak the parts for 30 minutes in a 5 percent solution of sodium hydroxide at 160°F to 180°F (71°C to 82°C). Then rinse the part thoroughly in water.
MSC Industrial Supply Co. - Modern Machine Shop
WEBMSC Industrial Supply Co. AS SEEN ON MMS. VIDEOS. 75 Maxess Rd. Melville, NY 11747 US. 800-645-7270 | 631-586-5600. [email protected].
Machining Centers | Modern Machine Shop
WEBSep 23, 2024 · Machining Centers. The term “machining center” describes almost any CNC milling and drilling machine that includes an automatic toolchanger and a table that clamps the workpiece in place. On a machining center, the tool rotates, but the work does not. The orientation of the spindle is the most fundamental defining characteristic of a CNC ...