T15 파우더

T15 분말은 경도, 강도 및 인성의 탁월한 조합을 제공하는 텅스텐 카바이드-코발트 초경합금 분말입니다. 이는 바인더 상으로 15% 코발트와 함께 높은 비율의 텅스텐 카바이드를 포함합니다.

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목차

Overview of T15 Powder

T15 분말은 경도, 강도 및 인성의 탁월한 조합을 제공하는 텅스텐 카바이드-코발트 초경합금 분말입니다. 이는 바인더 상으로 15% 코발트와 함께 높은 비율의 텅스텐 카바이드를 포함합니다.

Key properties and advantages of T15 powder:

T15 Powder Properties and Characteristics

속성 세부 정보
구성 85% WC with 15% Co binder
밀도 13.0-14.5 g/cc
파티클 모양 Rounded, multi-faceted
크기 범위 0.5-15 microns
경도 88-93 HRA when sintered
가로 파열 강도 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

구성 요소 무게 %
Tungsten carbide (WC) 84-86%
코발트 (Co) 14-16%
탄소(C) 0.8% max
산소(O) 최대 0.5%
철(Fe) 최대 0.3%
니켈(Ni) 최대 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

속성
밀도 13.0-14.5 g/cc
녹는점 2870°C (WC) and 1495°C (Co)
열 전도성 60-100 W/mK
전기 저항 25-35 μΩ-cm
열팽창 계수 4.5-6.0 x 10^-6 /K
최대 서비스 온도 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

속성
경도 88-93 HRA
가로 파열 강도 550-650 MPa
압축 강도 5500-6200 MPa
골절 인성 10-12 MPa.m^1/2
영의 계수 550-650 GPa
충격 강도 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

산업 사용 예시
마이닝 Rock drill bits, grit blasting nozzles
건설 Demolition tools, rock crushers
제조 Forming dies, metal drawing parts
석유 및 가스 Stabilizers, downhole motors
일반 Cutting and machining tools

일부 특정 제품 용도:

  • 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

표준 설명
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

정의합니다:

  • Chemical composition – Co and WC content
  • Carbide grain size and powder particle size distribution
  • 필수 기계적 특성
  • 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

입자 크기 특성
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

방법 세부 정보
Carburization and reduction-diffusion Produces fine spherical powders
Crushing sintered material Lower cost, irregular angular particles
갈기 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

팩터 가격에 미치는 영향
파우더 등급 순도 등급이 높을수록 비용이 더 많이 듭니다.
입자 크기 초미세분말이 더 비싸요
주문 수량 볼륨이 커지면 가격이 하락합니다.
생산 방법 복잡한 방법으로 비용 증가
패키징 Special bags or cans increase cost

표시 가격

  • 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

회사 위치
샌드빅 스웨덴
Kennametal 미국
H.C. Starck 독일
징동 신소재 중국
Zhuzhou Cemented Carbide Group 중국
Toshiba Materials 일본

Selection factors:

  • Powder grades and particle morphologies
  • 생산 능력 및 리드 타임
  • 기술 전문성 및 고객 서비스
  • Sampling, testing and quality control procedures
  • Pricing levels and payment terms
  • Compliance with international material standards

T15 Powder Handling and Storage

T15 Powder Handling

권장 사항 이유
PPE 사용 및 환기 Prevent exposure to fine particles
점화원 피하기 Powder can combust if overheated in air
안전한 프로토콜 준수 건강 및 화재 위험 감소
Use inert atmosphere Prevent oxidation during powder processing
밀폐 용기 보관 Prevent contamination or absorption

스토리지 권장 사항

  • 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

테스트 세부 정보
화학 분석 Verifies composition using ICP, EDX, or XRF
입자 크기 분포 Laser diffraction or sedimentation analysis
분말 형태 입자 모양의 SEM 이미징
겉보기 밀도 ASTM B212 표준에 따라 측정됨
탭 밀도 기계적 두드림 후 측정한 밀도
홀 유량 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

  • 소결 후 가공이 어려움
  • 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

매개변수 T15 WC-TiC-TaC
경도 88-93 HRA 92-96 HRA
골절 인성 10-12 MPa.m^1/2 8-9 MPa.m^1/2
매우 높음 Extremely high
비용 보통 매우 높음
내식성 공정 우수
애플리케이션 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.

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