Bột T15

Overview of T15 Powder

Bột T15 là một loại bột cacbua xi măng vonfram cacbua cung cấp sự kết hợp đặc biệt của độ cứng, sức mạnh và độ dẻo dai. Nó chứa một tỷ lệ cao của cacbua vonfram cùng với 15% coban là giai đoạn chất kết dính.

Key properties and advantages of T15 powder:

T15 Powder Properties and Characteristics

Của cải	Details
Thành phần	85% WC with 15% Co binder
Tỉ trọng	13.0-14.5 g/cc
Hình dạng hạt	Rounded, multi-faceted
Phạm vi kích thước	0.5-15 microns
Độ cứng	88-93 HRA when sintered
Sức mạnh vỡ ngang	550-650 MPa

The ultrahard tungsten carbide particles held together in a cobalt matrix make T15 ideal for the most extreme wear and abrasion conditions across industrial, mining, and construction sectors.

T15 Powder Composition

Typical composition of T15 cemented carbide powder:

T15 Powder Composition

Thành phần	Cân nặng %
Tungsten carbide (WC)	84-86%
Cobalt (CO)	14-16%
Carbon (c)	0.8% max
Oxy (O)	Tối đa 0,5%
Sắt (Fe)	Tối đa 0,3%
Niken (NI)	Tối đa 0,3%

• Tungsten carbide provides extreme hardness and wear resistance
• Cobalt acts as tough and ductile binder holding WC particles together
• Carbon and oxygen present as impurities
• Trace iron, nickel from raw materials

The optimized WC-Co ratio provides the best combination of hardness, fracture toughness and impact strength needed in wearing applications.

T15 Powder Physical Properties

T15 Powder Physical Properties

Tài sản	Giá trị
Tỉ trọng	13.0-14.5 g/cc
Độ nóng chảy	2870°C (WC) and 1495°C (Co)
Dẫn nhiệt	60-100 W/mK
Điện trở suất	25-35 μΩ-cm
Hệ số giãn nở nhiệt	4.5-6.0 x 10^-6 /K
Nhiệt độ dịch vụ tối đa	500°C in air

• Very high density enables use in compact, miniaturized components
• Very low CTE reduces thermal stresses and distortion
• Can withstand continuous service up to 500°C
• Good thermal conductivity reduces temperature gradients

These properties make T15 suited for severe abrasion and repeated impact force conditions experienced in mining, drilling, and construction environments.

T15 Powder Mechanical Properties

T15 Powder Mechanical Properties

Tài sản	Giá trị
Độ cứng	88-93 HRA
Sức mạnh vỡ ngang	550-650 MPa
Cường độ nén	5500-6200 MPa
Khả năng gãy xương	10-12 MPa.m^1/2
Mô -đun Young ’	550-650 GPa
Sức mạnh tác động	350-900 kJ/m2

• Extreme hardness provides wear and abrasion resistance
• Very high compressive strength withstands crushing forces
• Reasonable fracture toughness and impact strength
• Hardness and strength determined by WC particle size and distribution

This exceptional combination of hardness, strength and toughness makes T15 suitable for the most severe impaction, abrasion and gouging wear conditions.

T15 Powder Applications

Typical applications of T15 tungsten carbide-cobalt powder include:

T15 Powder Applications

Ngành công nghiệp	Ví dụ sử dụng
Mining	Rock drill bits, grit blasting nozzles
Sự thi công	Demolition tools, rock crushers
Chế tạo	Forming dies, metal drawing parts
Dầu và khí	Stabilizers, downhole motors
Tổng quan	Cutting and machining tools

Một số sản phẩm cụ thể sử dụng:

• Percussive rock drilling bits, mine boring tools
• Highly abrasive slurry pump parts like shafts, impellers
• Extrusion dies for brick and ceramic manufacturing
• Wear-resistant components in sandblasting equipment
• Cutting blades, knives, saw teeth needing extreme hardness

T15’s unparalleled hardness and wear performance make it the top choice for equipment used in the most severe impaction-abrasion conditions across industrial sectors.

T15 Powder Specifications

Key specifications for T15 cemented carbide powder:

T15 Powder Standards

Tiêu chuẩn	Sự miêu tả
ISO 513	Classification and application of cemented carbides
ASTM B276	Cobalt-tungsten carbide powders and hard metals
JIS G 4053	Sintered hard metals
GB/T 4661-2006	Chinese standard for cemented carbides

Những điều này xác định:

• Chemical composition – Co and WC content
• Carbide grain size and powder particle size distribution
• Yêu cầu tính chất cơ học
• Acceptable impurities
• Approved production methods like carburization and reduction-diffusion

Meeting these specifications ensures optimal combination of hardness, strength and toughness for maximum wear performance.

T15 Powder Particle Sizes

T15 Powder Particle Size Distribution

Kích thước hạt	Đặc trưng
0.5-2 microns	Ultrafine grade provides superfinish
0.5-5 microns	Submicron range enhances toughness
3-15 microns	Most commonly used size for optimal properties

• Finer powders increase hardness and finish
• Coarser powders improve fracture strength and impact resistance
• Particle size distribution is optimized based on service conditions
• Both crushed and sintered carbide powders used

Controlling particle size distribution and morphology optimizes final component properties and performance.

T15 Powder Production Method

T15 Powder Production

Phương pháp	Details
Carburization and reduction-diffusion	Produces fine spherical powders
Crushing sintered material	Lower cost, irregular angular particles
Milling	Ball milling used for particle size reduction
Spray drying	Granulation and spheroidization process
Degassing	Removes gaseous impurities

• Spherical powder morphology provides high packing density
• Crushed powders have lower production cost
• Milling, spray drying used for particle size control
• Degassing optimizes powder purity and sintered microstructure

Automated, high volume production processes result in consistent feedstock optimized for part performance.

T15 Powder Pricing

T15 Powder Pricing

Nhân tố	Tác động đến giá cả
Loại bột	Lớp độ tinh khiết cao hơn có giá cao hơn
Kích thước hạt	Bột siêu mịn đắt hơn
số lượng đặt hàng	Giảm giá với khối lượng lớn hơn
Phương pháp sản xuât	Complex methods increase cost
Bao bì	Special bags or cans increase cost

Giá chỉ định

• T15 spherical powder: $45-60 per kg
• T15 crushed powder: $35-45 per kg
• Large volume pricing can be 20-30% lower

Pricing depends on powder characteristics, production method, order size, packaging and lead time.

T15 Powder Suppliers

T15 Powder Suppliers

Công ty	Vị trí
Sandvik	Thụy Điển
Kennametal	Hoa Kỳ
H.C. Starck	nước Đức
Jingdong vật liệu mới	Trung Quốc
Zhuzhou Cemented Carbide Group	Trung Quốc
Toshiba Materials	Nhật Bản

Selection factors:

• Powder grades and particle morphologies
• Năng lực sản xuất và thời gian dẫn đầu
• Technical expertise and customer service
• Sampling, testing and quality control procedures
• Pricing levels and payment terms
• Compliance with international material standards

T15 Powder Handling and Storage

T15 Powder Handling

Sự giới thiệu	Lý do
Sử dụng PPE và thông gió	Prevent exposure to fine particles
Tránh các nguồn đánh lửa	Powder can combust if overheated in air
Thực hiện theo các giao thức an toàn	Giảm sức khỏe và nguy cơ hỏa hoạn
Use inert atmosphere	Prevent oxidation during powder processing
Lưu trữ các thùng chứa kín	Prevent contamination or absorption

Khuyến nghị lưu trữ

• Store in stable containers and ambient temperatures
• Limit exposure to moisture, acids, chlorine
• Avoid cross-contamination from other powders

Proper precautions preserve powder purity and prevent safety issues during handling and storage.

T15 Powder Inspection and Testing

T15 Powder Testing

Bài kiểm tra	Details
Phân tích hóa học	Verifies composition using ICP, EDX, or XRF
Phân phối kích thước hạt	Laser diffraction or sedimentation analysis
Hình thái bột	Hình ảnh SEM của hình dạng hạt
Mật độ rõ ràng	Được đo theo tiêu chuẩn ASTM B212
Chạm vào mật độ	Mật độ đo sau khi khai thác cơ học
Tốc độ lưu lượng hội trường	Determines powder flowability

Testing ensures powder meets required chemical composition, particle characteristics, morphology, density specifications, and flowability per relevant standards.

T15 Powder Pros and Cons

Advantages of T15 Powder

• Exceptional hardness, wear resistance, and strength
• Withstands high compression without fracturing
• Good fracture toughness and impact resistance
• Dimensional stability under heavy loads
• Resists deformation at elevated temperatures
• Enables smaller, lighter components

Limitations of T15 Powder

• Khó khăn để máy sau thiêu kết
• Not suitable for dynamic bearing applications
• Relatively brittle behavior
• Oxidation at high temperatures without resistance coatings
• Higher raw material costs than steel powders
• Requires specialized experience for optimal use

Comparison With Tungsten Carbide-Titanium Carbide-Tantalum Carbide

T15 vs WC-TiC-TaC

Tham số	T15	WC-TiC-TaC
Độ cứng	88-93 HRA	92-96 HRA
Khả năng gãy xương	10-12 MPa.m^1/2	8-9 MPa.m^1/2
Sức mạnh	Rất cao	Extremely high
Trị giá	Vừa phải	Rất cao
Chống ăn mòn	Hội chợ	Xuất sắc
Các ứng dụng	General wear parts	Extreme abrasion and corrosion

• WC-TiC-TaC has slightly higher hardness and strength
• T15 provides significantly better fracture toughness
• WC-TiC-TaC offers excellent corrosion resistance
• T15 is more cost effective
• WC-TiC-TaC for more critical, expensive applications

T15 Powder FAQs

Q: What are the main applications of T15 tungsten carbide cobalt powder?

A: Main applications include mining tools like drill bits, rock crushers, and dredging equipment; construction tools like demolition and pulverizing equipment; dies, drawing parts, extrusion tooling; abrasion resistant components; and general cutting and machining tools.

Q: Why is cobalt used as the binder in tungsten carbide grades?

A: Cobalt provides good corrosion resistance, high strength and toughness, and facilitates liquid phase sintering of the tungsten carbide particles during densification to achieve full density and optimal properties.

Q: What heat treatment is used for T15 tungsten carbide cobalt parts?

A: T15 does not require post-sintering heat treatment. The liquid phase sintering process allows achieving full density and the desired properties during powder consolidation itself.

Q: How is T15 tungsten carbide cobalt powder produced?

A: Main production methods include carburization and reduction-diffusion to make spherical powders or crushing and milling sintered tungsten carbide material into irregular particles. These powders are then blended with cobalt powder in the desired ratio.