Plaquettes en carbure are a critical component in the machining industry, known for their durability and precision in cutting, shaping, and finishing materials. They are made from carbide, a compound consisting of carbon and a less electronegative element. These inserts are essential for tasks requiring high precision and wear resistance, making them indispensable in modern manufacturing.
Types de plaquettes en carbure
Carbide inserts come in various shapes and sizes, each designed for specific applications. Here’s a detailed table highlighting some common types and their applications:
| Type de plaquette en carbure | Forme | Application |
|---|---|---|
| C-Style | Diamant | General turning and boring operations |
| D-Style | 55° Diamond | Finishing and semi-finishing applications |
| S-Style | Carré | Rough turning, facing, and interrupted cuts |
| T-Style | Triangle | General purpose turning, good for a wide range of tasks |
| R-Style | Rond | Heavy roughing and high-feed turning |
| V-Style | 35° Diamond | Precision finishing and contouring |
| W-Style | Trigon | Versatile, for both roughing and finishing |
| A-Style | Parallelogram | Profiling and cutting intricate shapes |
| P-Style | Pentagon | Specialized tasks requiring multiple cutting edges |
| M-Style | Hexagon | Machining in hard-to-reach areas |
Applications de la Plaquettes en carbure
Different carbide inserts are suited for various machining processes. Here’s a table showing the primary applications:
| Application | Carbide Insert Type |
|---|---|
| Tournage général | C-Style, T-Style |
| Finition | D-Style, V-Style |
| Rough Turning | S-Style, R-Style |
| High-Feed Turning | R-Style |
| Coupes interrompues | S-Style |
| Profiling and Contouring | A-Style, V-Style |
| Machining Hard-to-Reach Areas | M-Style |
| Ebauche lourde | R-Style |
| Finition de précision | V-Style, D-Style |
| Tâches spécialisées | P-Style, M-Style |
Propriétés des matériaux des plaquettes en carbure
Carbide inserts are renowned for their exceptional material properties, making them suitable for demanding machining tasks. The following table highlights these properties:
| Propriété | Description |
|---|---|
| Dureté | Extremely hard, often measuring over 90 HRA |
| Résistance à l'usure | High wear resistance, extending tool life |
| Conductivité thermique | Excellent, which aids in heat dissipation during machining |
| Solidité | Sufficient toughness to withstand high-stress environments |
| Stabilité chimique | Resistant to oxidation and corrosion |
| Compression Strength | Very high, ideal for maintaining shape under pressure |
Composition et caractéristiques
Carbide inserts are made from various materials, each with unique characteristics. Here’s a breakdown of their composition:
| Composition | Caractéristiques |
|---|---|
| Carbure de tungstène (WC) | Dureté élevée et résistance à l'usure |
| Liant de cobalt (Co) | Adds toughness and binding properties to the carbide |
| Carbure de titane (TiC) | Increases hardness and chemical stability |
| Carbure de tantale (TaC) | Enhances hardness and resistance to high temperatures |
| Carbure de niobium (NbC) | Improves toughness and resistance to thermal shock |
Dureté, solidité et résistance à l'usure
Carbide inserts excel in hardness, strength, and wear resistance. The following table compares these properties across different grades:
| Grade | Dureté (HRA) | Résistance (MPa) | Résistance à l'usure |
|---|---|---|---|
| WC/Co | 90-94 | 2000-2500 | Excellent |
| WC/TiC/Co | 92-95 | 2200-2700 | Très élevé |
| WC/TaC/Co | 91-93 | 2100-2600 | Haut |
| WC/NbC/Co | 92-94 | 2300-2800 | Excellent |
Spécifications, tailles et normes
Carbide inserts come in various specifications and sizes, adhering to industry standards. Here’s a table detailing common specifications:
| Spécifications | Taille (mm) | Forme | Standard |
|---|---|---|---|
| ISO P35 | 6-25 | Triangle | ISO 1832 |
| ISO K10 | 5-20 | Carré | ISO 1832 |
| ANSI C2 | 4-30 | Diamant | ANSI B212.4 |
| ISO M20 | 8-22 | Rond | ISO 1832 |
| ANSI C5 | 3-28 | Trigon | ANSI B212.4 |
Fournisseurs et détails des prix
Several suppliers offer carbide inserts, each with varying pricing. Here’s a table listing some notable suppliers and their pricing details:
| Fournisseur | Fourchette de prix (USD) | Notes |
|---|---|---|
| Sandvik Coromant | 10-50 | High-quality, reliable |
| Kennametal | 8-45 | Extensive range of products |
| Outils Seco | 12-55 | Known for innovative solutions |
| Matériaux Mitsubishi | 9-48 | Durable and efficient |
| Sumitomo Electric | 11-52 | Precision-focused |
Choisir le bon Plaquettes en carbure
Choosing the right carbide insert depends on several factors, including the material being machined, the type of machining operation, and the desired surface finish. Here’s a guide to help with the selection process:
| Critères | Recommended Carbide Insert |
|---|---|
| Matériau Dureté | WC/TiC/Co for hard materials |
| Finition de la surface | V-Style or D-Style for fine finishes |
| Opération d'usinage | R-Style for heavy roughing, C-Style for general turning |
| Machine Stability | S-Style for interrupted cuts, A-Style for profiling |
| Cost Consideration | Evaluate suppliers like Kennametal and Seco Tools for cost-effective options |
Avantages et limites
Carbide inserts offer numerous benefits but also come with some limitations. Here’s a comparative analysis:
| Aspect | Avantages | Limites |
|---|---|---|
| Durabilité | High wear resistance and long tool life | Higher initial cost compared to HSS |
| Précision | Excellent for achieving fine tolerances | Requires precise handling and setup |
| Polyvalence | Convient à une large gamme de matériaux | Limited in extremely high-temperature applications |
| Performance | Maintains cutting efficiency at high speeds | Can be brittle if improperly used |
FAQ
| Question | Réponse |
|---|---|
| À quoi servent les plaquettes en carbure ? | Les plaquettes en carbure sont utilisées pour couper, façonner et finir les matériaux dans diverses opérations d'usinage. |
| Comment choisir la bonne plaquette carbure ? | Consider factors like material hardness, desired surface finish, and type of machining operation. |
| Les plaquettes en carbure sont-elles rentables ? | Yes, despite their higher initial cost, their durability and precision make them cost-effective in the long run. |
| Les plaquettes en carbure peuvent-elles être utilisées sur tous les matériaux ? | They are suitable for a wide range of materials but may not be ideal for extremely high-temperature applications. |
| Comment les plaquettes en carbure sont-elles fabriquées ? | They are made by combining carbide powders with binders, followed by pressing and sintering. |
