Bột vonfram hình cầu

Mục lục

Spherical tungsten powder refers to tungsten metal particles in a spherical powder form produced by atomization processes. With the highest melting point of all metals, tungsten provides unique properties including high density, strength, hardness, and conductivity. This guide provides an overview of spherical tungsten powder including manufacturing methods, characteristics, applications, specifications, usage recommendations, suppliers, and frequently asked questions.

Introduction to Bột vonfram hình cầu

Tungsten is a refractory metal valued for its extremely high melting point of 3422°C, density of 19.3 g/cc, hardness, high temperature strength, wear resistance, and electrical conductivity.

Converting tungsten into a spherical powder form enables use in manufacturing techniques such as:

  • Đúc kim loại (MIM)
  • sản xuất phụ gia
  • Lớp phủ phun nhiệt
  • Composite production
  • Electronic thick film pastes
  • Ballast applications

Benefits of spherical tungsten powder include:

  • Consistent shape and size distribution
  • Độ tinh khiết cao
  • Good flow and packing characteristics
  • Tunable density in finished parts
  • High loadings in composites
  • High density resolution in AM
  • Smooth surface finish in MIM

This guide provides a detailed overview of spherical tungsten powder and its applications.

spherical tungsten powder

Methods for Producing Spherical Tungsten Powder

Spherical tungsten powder is commercially produced via specialized processes:

  • Hình cầu huyết tương – Tungsten particles pass through a plasma torch and are melted into spheres by surface tension before rapidly solidifying. This produces the most spherical powder.
  • Rotating Electrode Process – Tungsten wire feeds into an electric arc to produce droplets that are spun into spheres by centrifugal forces.
  • Nguyên tử hóa – Molten tungsten is gas or water atomized into spherical droplets.
  • Mechanical Spheroidization – Irregular tungsten powder is mechanically processed into more spherical particles. Lower cost but less spherical results.

Plasma spheroidization makes the roundest and most consistently sized tungsten powder ideal for high performance applications.

Properties of Bột vonfram hình cầu

Spherical tungsten powder exhibits properties ideal for improving density, conductivity, and wear resistance:

  • High density up to 18 g/cm3
  • High melting point of 3422°C
  • Excellent hardness up to 550 VPN
  • Độ dẫn điện và điện cao
  • Low vapor pressure
  • Resistance to acids and alkalis
  • Biocompatible and non-toxic

Combined with spherical morphology for excellent packing and flowability, tungsten powder provides ideal performance characteristics.

Key Applications of Spherical Tungsten Powder

Thanks to its unique properties, spherical tungsten powder is used across a range of industries:

  • sản xuất phụ gia
  • Đúc kim loại
  • Tungsten heavy alloys
  • Radiation shielding
  • Vibration damping
  • Counterweights
  • Ballasts
  • Electrodes
  • Lớp phủ phun nhiệt
  • Composite fillers
  • Electrical contacts
  • Medical radiotherapy

Spherical morphology improves performance in powder-based manufacturing methods like metal AM and MIM in particular.

Specifications of Bột vonfram hình cầu

The powder is characterized by metrics like particle size, shape, purity, and chemistry:

Typical Spherical Tungsten Powder Specs

Tham sốSự chỉ rõ
Kích thước hạt1 – 150 μm
Hình dạng hạtHình cầu
Phân bố kích thướcD10, D50, D90
True Density18.7 g/cm3
Mật độ rõ ràng10 – 15 g/cm3
Sự thuần khiết99.9%
Hàm lượng oxy< 50 ppm
Carbon Content< 50 ppm

Understanding specifications allows matching powder properties to manufacturing process and end product requirements.

Phân phối kích thước hạt

Spherical tungsten powder is classified by particle size according to standard ranges:

Tungsten Powder Size Classifications

KiểuPhạm vi kích thước hạt
Thô10-150 μm
Trung bình1-10 μm
Khỏe1-5 μm
Nanoscale< 1 μm
  • Larger particles improve powder flow
  • Smaller particles allow higher density but may be pyrophoric
  • Particle sizes tailored to application method

Controlling particle size distribution through classification improves packing density, flow characteristics, and repeatability.

How to Select Spherical Tungsten Powder

Key considerations for selecting tungsten powder include:

  • Application method and ideal powder properties
  • Particle shape and degree of sphericity
  • Particle size distribution (PSD) as classified
  • Purity levels and chemistry characteristics
  • Sampling and lots testing certification
  • Apparent and tap density specifications
  • Handling and safety precautions required
  • Pricing based on order quantity
  • Manufacturer’s capabilities and experience

Consult closely with experienced tungsten powder suppliers to match an optimized product to your production requirements.

spherical tungsten powder

Handling and Storage of Tungsten Powder

Safe handling practices are critical when working with fine tungsten powder:

  • Use inert gas glove boxes to prevent oxidation
  • Avoid airborne dust through ventilation controls
  • Powders may be pyrophoric when very fine
  • Ground all equipment and use conductive containers
  • Store sealed powder containers away from moisture and heat
  • Follow guidance in the Safety Data Sheet (SDS)
  • Wear PPE and avoid skin contact or inhalation

Proper techniques and controls mitigate safety risks and maintain powder properties.

Where to Buy Bột vonfram hình cầu

Leading global suppliers of spherical tungsten powder include:

Spherical Tungsten Powder Suppliers

Công tyVị trí
Buffalo TungstenHoa Kỳ
H Cross CompanyHoa Kỳ
Thu nhậpCanada
Midwest TungstenHoa Kỳ
Wolfram CompanyHoa Kỳ
HC Starcknước Đức
Jiangxi TungstenTrung Quốc

Factors to consider when selecting a supplier:

  • Production capabilities and capacity
  • Powder sphericity, size distribution consistency
  • Range of available size classifications
  • Testing reports and lot data provided
  • Packaging options available
  • Lead times for both stock and custom orders
  • Technical expertise and customer service

Sample testing and site visits help validate supplier quality and capabilities.

Cost Analysis of Tungsten Powder

Tungsten powder pricing depends on:

  • Độ tinh khiết
  • Phân phối kích thước hạt
  • Sphericity level
  • Production method sophistication
  • Sampling and analytical testing
  • số lượng đặt hàng
  • Packaging and delivery

As a guide, spherical tungsten powder costs between $50 to $500 per kg currently. Quotes from suppliers establish exact pricing based on custom requirements.

Innovations in Tungsten Powder Manufacturing

Recent advances in tungsten powder production include:

  • Additive manufacturing using tungsten powder
  • Automated powder production with higher yields
  • Micron to sub-micron size control
  • Recycling and reprocessing of scrap powder
  • Simulation modeling for atomization parameters
  • Specialized alloy powder compositions
  • Continuous rather than batch processing

These innovations expand the applications and improve the cost-effectiveness of spherical tungsten powder.

spherical tungsten powder

Key Takeaways on Spherical Tungsten Powder

  • Produced via plasma spheroidization or rotating electrode process
  • Excellent density, hardness, and high temperature properties
  • Spherical shape improves powder flow and packing density
  • Used in composites, ballasts, counterweights, radiation shielding
  • Particle size distribution carefully controlled through classification
  • Require proper inert atmosphere handling to prevent fires or explosions
  • Pricing ranges based on purity, size distribution, and order quantity
  • Leading tungsten powder suppliers provide various size classifications

With its extreme properties and spherical morphology, tungsten powder enables high performance manufacturing across 3D printing, injection molding, and other powder-based technologies.

Câu hỏi thường gặp

Q: Is tungsten powder dangerous to handle?

A: Yes, fine tungsten powder can pose dust explosion risks and may be pyrophoric at small sizes. Proper inert atmosphere handling is critical.

Q: What is spherical tungsten mainly used for?

A: Currently the main uses are in tungsten heavy alloys, counterweights, ballasts, and radiation shielding, though additive manufacturing applications are expanding.

Q: What is the difference between spherical and irregular tungsten powders?

A: Spherical powders have superior flow, packing density, and surface finish. Irregular powder is less expensive but does not perform as well in many powder-based applications.

Q: Is tungsten environmentally friendly?

A: Yes, tungsten is non-toxic with excellent recyclability and reuse potential. Protective controls prevent environmental releases.

Q: Which makes a more spherical powder – gas atomization or plasma spheroidization?

A: Plasma spheroidization makes the most consistently spherical and smooth powders compared to other methods.

Q: How is powder size measured and classified?

A: Laser diffraction particle size analyzers determine the distribution. Sieves and air classification separate powder into size fractions.

Q: Can you 3D print using spherical tungsten powder?

A: Yes, tungsten’s excellent high temperature properties make it suitable for specialized additive manufacturing applications, though challenging to print.

Q: Does spherical shape affect tungsten material properties?

A: Sphericity enhances powder performance but does not significantly alter tungsten’s inherent physical properties like density or melting point.

Q: What alloying elements are combined with tungsten powder?

A: Typical alloys include nickel, iron, and cobalt combinations to enhance strength and ductility for applications like cutting tools.

biết thêm quy trình in 3D

Chia sẻ

logo 3dp kim loại nhỏ

Metal3DP Technology Co., Ltd là nhà cung cấp hàng đầu các giải pháp sản xuất phụ gia có trụ sở tại Qingdao, Trung Quốc. Công ty chúng tôi chuyên về thiết bị in 3D và bột kim loại hiệu suất cao cho các ứng dụng công nghiệp.

Yêu cầu để có được giá tốt nhất và giải pháp tùy chỉnh cho doanh nghiệp của bạn!

Những bài viết liên quan

Về met3dp

Chơi Video

Cập nhật gần đây

Sản phẩm của chúng tôi


Bất kỳ câu hỏi? Gửi tin nhắn cho chúng tôi ngay! Chúng tôi sẽ phục vụ yêu cầu của bạn với cả một nhóm sau khi nhận được tin nhắn của bạn. 

Nhận Metal3DP's
Tài liệu sản phẩm

Nhận các tin tức mới nhất, đổi mới và tin tức của công ty.