If you are looking for a place to compare CBN grades from Sandvik, Sumitomo, Iscar, Dijet, Kennametal, Mitsubishi, Tungaloy, and Kyocera, then you have come to the right place. This chart covers CBN Inserts and PCD Inserts.

Generally speaking, a search on the web will net you quite a few results, however rather than click on all those links how ’bout just one?

Give this a shot: CBN Insert Grade Comparison

Korloy offers Solution for Super alloy & Heat Resistant Ti-alloy TURNING!

PC8010 New PVD Coating

Features of PC8010

- PVD coated S10 grade
- Heat Resistant Super Alloy (HRSA) turning grade
- Good wear resistance and anti-adhesion of new coatinglayer
- Offers Prolonged tool life

Wear Resistance of PC8010 (click picture to enlarge)

Grinding, with its high cost and low volume material removal rate (MRR), is still the most common method used to finish machine sintered (fired) ceramic components.

New machining methods must be evaluated in order to produce ceramic components in a more timely, cost-effective manner.

Therefore to minimize the time and cost associated with finish machining after sintering, ceramic materials should be machined in the bisque state with PCD tooling whenever possible.

Expected Benefits
- Reduced operation time by 90% by rough machining in bisque state, when compared to grinding
- Reduced labor costs
- Increased competitiveness of ceramic components

David Richards Engineering specializes in the manufacture of PCD Inserts and cutting tools. They offer extensive experience in the machining of carbide with PCD tools. Contact them via sales@drengus.com for information regarding speeds and feeds and recommended tooling.

Solid-carbide drills are made to be used on modern machining centers. These drills are manufactured with fine-grain carbide and titanium aluminum nitride (TiAlN) coatings to provide long tool life. As self-centering drills, they have a specially designed edges that help to control chips and chip evacuation in most workpiece materials. The self-centering geometry and fine tolerances of solid-carbide drills ensure quality holes without additional machining.

Indexable-insert drills cover a broad range of diameters with depths two times diameter to five times diameter. They may be used for rotating applications as well as in lathes.

Drills with brazed carbide tips rely on the strong connection of the brazed tips to the drill bodies. These tools use a self-centering geometry for low cutting forces and good chip control in most workpiece materials. Brazed drills produce holes with relatively high surface finish, close diameter tolerances and good positioning accuracy without additional finishing operations. These drills are available with through-the-tool coolant, and can be used in machining centers, CNC lathes or other machines that have sufficient stability and rpm.

Drills that have exchangeable solid-carbide tips incorporate a steel body with the exchangeable tips that are known as crowns. These tools offer the precision of brazed drills, and offer increased productivity at reduced operating costs. The carbide crowns used with this new generation of drilling tools are available in precise size increments and have a self-centering geometry to produce close diameter tolerances.

Drilling tolerances and machine stability

REF: www.cutting-tool.americanmachinist.com

Ceramics’ and cubic boron nitrides’ (CBN) hardness, chemical stability, and high wear-resistance make the materials, even at elevated temperatures, well-suited for high-speed and hard machining that can achieve significant reductions in production time and cost. The ability of ceramics and CBN to run dry also allows cleaner machining processes with reduced environmental and health impact-saving coolant, maintenance, and disposal costs. In the high-performance cutting of cast iron, nodular or ductile cast iron, and in the turning of hardened steel, the materials enable productivity gains and cost efficiencies, which have resulted in recent market share gains by both ceramic and CBN cutting tools within the automotive industry.

Kennametal, Sandvik, Carboloy Seco, Korloy, Sumitomo, Kyocera, Iscar, Toshiba Tungaloy, Mitsubishi, Valenite, and Taegutec.

Find the chart here:

carbide insert grade comparison chart

Machining bimetals productively calls for refined machining routines developed by the user, tool supplier and machine vendor. In one application, the hard powder metal composite alloy described earlier was hot isostatically pressed onto a less costly 316 stainless steel substrate. A helically interpolated tool path programmed into the machine control applied optimum feeds and speeds to machine the powder metal zone first, then the backing.

To machine bimetal cylinder blocks productively, automakers must contend with both abrasive aluminum alloys and cast iron cylinder liners. The design of the part means hard iron wear zones cannot be isolated from the soft aluminum. However, machine programs providing very low speeds and very light depths of cut enable abrasion-resistant PCD inserts to machine both aluminum and iron without frequent tool changes.

“Hard Turning” Tool Steels 45Rc to 65Rc+

• Speeds of 200 SFM to 600+ SFM (Surface Feet per Minute)
• Chip loads of .002 to .020 IPR (Inch per Revolution)
• Depth of cuts .002 tp .200″
• Finishes to 16-Ra+
• Interrupted cuts – NO Problem
• Solid-top CBN inserts eliminate the problem of Mini-tip Melt-Off

Chilled Cast Irons (as cast) & Grey Cast Irons

* 300% Increased productivity vs. carbide
* Wear life 5 to 10 times TiN coated carbide
* 200% wear life in finishing cuts vs. ceramics
* Speeds start at 1600 SFM to 1400+
* Chip loads .004 to .020 IPR
* Depth of cut .002″ to .400″
* Operations include turning, milling and boring

NiHard (White Iron) 450 Bhn to 750Bhn

* Speeds range from 250 SFM to 400+ SFM
* Roughing chip loads -.005″ to .015″ IPR
* Roughing depth cuts -.010″ to .400″
* Finishing cuts, chip load starts at .002 to .020″ IPR
* Finish cuts, depth of cuts -.002 to .300″
* Operations include turning, milling and boring
* Acme threading both ID & OD

Machinist’s Calculator

The Machinist’s Calculator software has been developed to quickly solve common machine shop trigonometry and math problems at a price every machinist can afford!

• All calculations switch between inch and metric




• Right angle and oblique trigonometry




• Speeds and feeds, RPM to surface speed, etc.




• Drill point and countersink depth




• Drill size conversion charts




• Tapping drill charts




• Chord data calculations




• Dovetail calculations




• Bolt circles and grid layouts




• Measuring threads with wire calculations




• Hexagon and other regular polygon calculations




• Ballnose cutter/surface finish calculations

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