Le guide des plaquettes en carbure

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 carbureFormeApplication
C-StyleDiamantGeneral turning and boring operations
D-Style55° DiamondFinishing and semi-finishing applications
S-StyleCarréRough turning, facing, and interrupted cuts
T-StyleTriangleGeneral purpose turning, good for a wide range of tasks
R-StyleRondHeavy roughing and high-feed turning
V-Style35° DiamondPrecision finishing and contouring
W-StyleTrigonVersatile, for both roughing and finishing
A-StyleParallelogramProfiling and cutting intricate shapes
P-StylePentagonSpecialized tasks requiring multiple cutting edges
M-StyleHexagonMachining 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:

ApplicationCarbide Insert Type
Tournage généralC-Style, T-Style
FinitionD-Style, V-Style
Rough TurningS-Style, R-Style
High-Feed TurningR-Style
Coupes interrompuesS-Style
Profiling and ContouringA-Style, V-Style
Machining Hard-to-Reach AreasM-Style
Ebauche lourdeR-Style
Finition de précisionV-Style, D-Style
Tâches spécialiséesP-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:

PropriétéDescription
DuretéExtremely hard, often measuring over 90 HRA
Résistance à l'usureHigh wear resistance, extending tool life
Conductivité thermiqueExcellent, which aids in heat dissipation during machining
SoliditéSufficient toughness to withstand high-stress environments
Stabilité chimiqueResistant to oxidation and corrosion
Compression StrengthVery 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:

CompositionCaractéristiques
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:

GradeDureté (HRA)Résistance (MPa)Résistance à l'usure
WC/Co90-942000-2500Excellent
WC/TiC/Co92-952200-2700Très élevé
WC/TaC/Co91-932100-2600Haut
WC/NbC/Co92-942300-2800Excellent

Spécifications, tailles et normes

Carbide inserts come in various specifications and sizes, adhering to industry standards. Here’s a table detailing common specifications:

SpécificationsTaille (mm)FormeStandard
ISO P356-25TriangleISO 1832
ISO K105-20CarréISO 1832
ANSI C24-30DiamantANSI B212.4
ISO M208-22RondISO 1832
ANSI C53-28TrigonANSI 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:

FournisseurFourchette de prix (USD)Notes
Sandvik Coromant10-50High-quality, reliable
Kennametal8-45Extensive range of products
Outils Seco12-55Known for innovative solutions
Matériaux Mitsubishi9-48Durable and efficient
Sumitomo Electric11-52Precision-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:

CritèresRecommended Carbide Insert
Matériau DuretéWC/TiC/Co for hard materials
Finition de la surfaceV-Style or D-Style for fine finishes
Opération d'usinageR-Style for heavy roughing, C-Style for general turning
Machine StabilityS-Style for interrupted cuts, A-Style for profiling
Cost ConsiderationEvaluate 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:

AspectAvantagesLimites
DurabilitéHigh wear resistance and long tool lifeHigher initial cost compared to HSS
PrécisionExcellent for achieving fine tolerancesRequires precise handling and setup
PolyvalenceConvient à une large gamme de matériauxLimited in extremely high-temperature applications
PerformanceMaintains cutting efficiency at high speedsCan be brittle if improperly used

FAQ

QuestionRéponse
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.

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