Chinese Carbide Blanks

Chinese Carbide Blanks refer to unfinished carbide rods and plates used for manufacturing cutting tools and dies. China has grown into a major supplier of quality carbide blanks catering to global demand. This guide provides a detailed overview of Chinese carbide blanks.

Introduction to Chinese Carbide Blanks

Carbide blanks are semi-finished carbide stock supplied for final grinding and machining into cutting tools. Key properties:

  • Extreme hardness for wear resistance
  • Strength at high temperatures
  • Resistance to abrasion and corrosion
  • Dimensional stability in operation
  • Raw material for inserts, drills, end mills, etc.

Carbide blank types:

  • Tungsten carbide blanks – WC primary constituent
  • Titanium carbide blanks – High hot hardness
  • Tantalum carbide blanks – Most wear resistant
  • Cermet blanks – Carbide particles in metal matrix

Accurately machined blanks enable consistent tooling quality and performance.

chinese carbide blanks

Manufacturing Process for Carbide Blanks

Carbide Blank Manufacturing Steps:

  • Weighing and mixing of carbide, binder, and dopant powders
  • Compacting into green blanks via pressing or extrusion
  • Debinding to remove binders at 500-600°C
  • Vacuum sintering at 1300-1500°C to form dense carbide
  • Annealing to release internal stresses
  • Grinding to tight diameters and finishes
  • Brazing of carbide rods for multilayer blanks
  • Final quality control as per ISO standards

Automation allows high volume blank production with minimal variability between batches.

Types of Chinese Carbide Blanks

China produces all standard blank configurations from tungsten carbide, titanium carbide, tantalum carbide, and cermets:

Types of Chinese Carbide Blanks

TypeDescription
Round rodCylindrical blank for drills, end mills
Square rodFor milling tool inserts, forming tools
Rectangular barBlanks for parting tools and custom shapes
Flat plateFor inserts, punching/embossing dies
Grooving insertPreforms for turning, threading, grooving
Mining pickBlanks for mining and construction picks

Both solid and brazed carbide blanks are available. Advanced geometries and custom configurations can also be produced as per specifications.

Composition of Carbide Blanks

Typical Compositions:

  • WC-Co – tungsten carbide with cobalt binder
  • TiC-NiMo – titanium carbide with nickel-molybdenum binder
  • TaC-WC-Co – tantalum-tungsten carbide cobalt
  • WC-TiC-TaC-Co – mixed carbides with cobalt
  • TiCN-Ni – Titanium carbonitride-nickel cermet

Binder metals like cobalt, nickel, and molybdenum facilitate sintering. Details composition depends on application requirements.

Properties of Carbide Blanks

Properties of Carbide Blanks

PropertyTypical Values
Hardness88-94 HRA
Transverse rupture strength500-3500 MPa
Density12-15 g/cm3
Maximum service temperature600-1000°C
Young’s modulus550-650 GPa
Fracture toughness10-12 MPa√m
Thermal conductivity60-100 W/mK

The combination of extreme hardness, strength, and high temperature resistance enables reliable performance in tooling applications.

Dimensions and Sizes of Carbide Blanks

China supplies standard and custom carbide blank sizes:

Standard Carbide Blank Sizes

TypeDiameter Range
Round rods0.5mm – 65mm
Square rods2mm – 32mm
Rectangular bars2x4mm – 25x32mm
Flat platesThickness: 2 – 15mm

Custom Dimensions

China factories offer complete flexibility in carbide geometries and dimensions as per application requirements. Complex carbide assemblies can also be manufactured.

Grades of Carbide Blanks

Carbide grades have specific compositions tailored to end use:

Carbide Blank Grades

GradeDescriptionApplication
K10Fine grained tungsten carbideLow wear tools
K20Cobalt-enriched WCToughness for mining
C6-C76% cobalt binderGeneral machining inserts
K40High cobalt, very toughMining, recycling
H10, H13High hardness TiC basedHigh speed steel tools

Manufacturers select optimum carbide compositions based on operating conditions the tooling will be subjected to during service life.

Quality Standards for Chinese Carbide Blanks

Chinese factories supply carbide blanks conforming to international standards:

  • ISO 1832 – Structure, designation, and coding of hardmetals
  • ASTM B776 – Standard for sintered tungsten carbide plates
  • JIS R 1601 – Classification and coding of hardmetals
  • GB/T 20846 – Chinese standard for cemented carbides

Compliance with standards ensures product quality and performance. Customers can review test reports to verify specifications are met.

Applications of Carbide Blanks

Applications of Carbide Blanks

IndustryApplication
AutomotiveCutting, drilling, milling tools
AerospaceMachining turbine blades, structural parts
EnergyDrill bits, wire drawing dies
Die and moldPunching, stamping, embossing dies
General engineeringTurning, boring, grooving inserts
ConstructionRoad milling, drilling in rock

Carbide blanks enable reliable, high-performance metalworking across industries requiring extreme hardness, wear and heat resistance.

Benefits of Sourcing Chinese Carbide Blanks

Benefits of Chinese Carbide Blanks

  • High quality at competitive pricing
  • Wide range of international grades and custom alloys
  • Flexibility in dimensions, geometries, and tolerance
  • Shorter lead times and quick turnaround
  • One stop shop for various configurations
  • Vertically integrated large-scale production
  • Process expertise and technical know-how
  • Compliance with global quality standards
  • Convenient shipping and export logistics

China offers a combination of capabilities, cost-effectiveness, and compliance ideal for carbide blank buyers.

Chinese Carbide Blanks Manufacturers

Major Chinese Carbide Blank Suppliers

CompanyLocation
Zhuzhou Jinggong Cemented CarbideZhuzhou, Hunan
Zhuzhou Mingri Cemented CarbideZhuzhou, Hunan
Zigong Cemented CarbideZigong, Sichuan
Guiyang Golden CrystalGuiyang, Guizhou
Chengdu Bangpu Cemented CarbideChengdu, Sichuan
Guangdong Xianglu TungstenJiangmen, Guangdong

These large producers cater to international buyers looking for price competitive Chinese carbide blanks without compromising on quality or service.

Pricing Analysis of Carbide Blanks

China Carbide Blank Cost Breakdown

ProductPrice per piece
Ø10mm x 50mm WC rod$5 – $8
Ø20mm x 100mm TiC plate$15 – $25
5mm x 5mm x 100mm TaC bar$10 – $15

Pricing depends on blank dimensions, tolerances, carbide grade, order quantity, and configuration complexity. Competitive pricing from China saves significant cost over domestic sourcing in most countries.

Pros and Cons of Sourcing Chinese Carbide Blanks

Advantages

  • Cost savings of 40-60% vs domestic suppliers
  • High consistency and repeatability
  • Shorter lead times for popular sizes
  • Customization as per exact requirements
  • Single source for multiple configurations
  • Smooth importing and customs
  • Technical expertise in carbide manufacturing
  • Compliance with international standards

Challenges

  • Minimum order quantity requirements
  • Freight costs on smaller orders
  • Language barriers during communication
  • Need to verify supplier quality and capabilities
  • Longer lead time for custom geometries
  • Difficulty returning or exchanging defective pieces

Working with the right partner helps buyers overcome downsides and leverage China’s strengths in carbide blanks.

Comparison Between Chinese and Domestic Carbide Blanks

Carbide Blanks – China vs Domestic Supply

ParameterChinaDomestic
CostLower by 40-60%Higher priced
Lead time4 weeks standard2-3 weeks
CustomizationExcellent, flexibleLimited flexibility
QualityEqual if supplier is qualifiedPossibly higher
ShippingBy sea – slowerLocal – faster
Minimum orderHigher MOQsLower MOQs

For balance of cost, quality, and flexibility, China has surpassed local supply in most foreign markets for standard and custom-made carbide blanks.

FAQ

Q: What are the major types of carbide blanks available from China?

A: The main options are tungsten carbide, titanium carbide, tantalum carbide, and TiCN cermet. Both solid and brazed multipiece configurations are available.

Q: What industries purchase carbide blanks from China?

A: Automotive, aerospace, machinery, die and mold, mining, construction, and general engineering are the key industry customers.

Q: Does China supply carbide blanks as per international standards?

A: Yes, Chinese factories comply with ISO, ASTM, JIS, and other global standards for composition, quality, and testing of carbide blanks. Third party certification can also be provided.

Q: How to find a reliable carbide blank supplier in China?

A: Verify industry experience, quality certifications, customer reviews, production capacity, international exports, and technical expertise when evaluating Chinese carbide blank manufacturers.

Q: What quality control is implemented for carbide blanks in China?

A: Stringent process monitoring, raw material controls, final inspection, metallography, mechanical testing, and dimensional calibration ensure consistent and reliable carbide blank quality.

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