Turning inserts
Experience meets innovation with positive and negative turning inserts
At Sharp Metal, we look forward to being your unique partner for the supply of negative and positive turning inserts designed and produced by us for the medium machining, roughing and finishing of your company’s metal products.
Our inserts are the result of close collaboration between our technical department and a network of carefully selected users in Europe. These users come from many different mechanical sectors and have been instrumental in helping us understand their real needs. This has enabled us to study the most innovative solutions to overcome the technical limitations of the inserts produced before we arrived on the market.
Browse our catalogue to find out more and discover all our positive and negative turning inserts. Send us a message today from anywhere in Italy and abroad.
Selecting the material
Selecting the material to be machined is the first important step in enabling us to manufacture high-quality turning inserts. Taking into account their chemical and physical properties, we classified the different materials according to their ISO families, namely steel, stainless steel, cast iron, non-ferrous materials, hardened materials and superalloys. We then manufactured inserts with specific grades.
iso p
Steel
iso N
Non-ferrous materials
iso m
Stainless steel
iso H
Hardened materials
iso K
Cast iron
iso S
Superalloys
Selecting the machining operation
Selecting the desired machining operation was the second step that enabled our team to produce high-quality turning inserts. This stage is critical for two reasons, one being to reduce the margin of error, and the other to ensure perfect application.
To make sure the correct machining operation was chosen, the options were broken down into three separate groups: finishing, roughing and medium machining. Specific geometries and hardnesses were then allocated to each one.
| OPERATION | GEOMETRY | ISO HARDNESS |
|---|---|---|
| Finishing | F | 20 |
| Medium machining | M | 30 |
| Roughing | R | 40 |
Selecting the coating
A later stage which influenced the choice of inserts was that of the coating. To find the most suitable coating, we collaborated with some of our partners who have state-of-the-art technologies for PVD and CVD coating. Using these machines, we can select the coating that is the most suitable for the material being machined: find out all about this in our catalogue!
| Hardness | ISO P | ISO M | ISO K | ISO N | ISO H | ISO S |
|---|---|---|---|---|---|---|
| 20 | YP20T | DM20T | BK20T | NN20T | RH20T | ZS20T |
| 30 | YP30T | DM30T | BK30T | NN30T | RH30T | ZS30T |
| 40 | YP40T | DM40T | BK40T | NN40T | RH40T | ZS40T |
| Coating |  |
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| Technology | PVD | PVD | CVD | / | PVD | PVD |
Cutting strategies
Finding the most suitable turning insert for each machine and every requirement is essential. Many make the mistake of focusing on cutting speed to determine equipment performance. At Sharp Metal, however, we encourage you to check the “Q” parameter, or chip removal rate, which indicates the quantity of chips produced during turning in a set time frame.
Discover the equation for calculating chip removal during turning by downloading our catalogue, or let our staff guide you, wherever you are in Italy and abroad.