Tungsten Carbide Rod Definition

Tungsten carbide rod is also called cemented carbide rod or tungsten steel rod. It is a new kind of technology and material.  Stable in mechanical properties, easy soldering, high wear resistance and high impact resistant are its’ main features. Tungsten carbide rods include rods with the shapes of round, rectangular and square, solid rods and rods with one or more straight or coolants. It is widely known as one kind of carbide cutting tools, it’s available for different grinding geometric parameters and suitable for both cutting materials and nonmetal materials, also it can be applied to conventional, semi-automatic lathe, automatic lathe and planning machine to work grooves and operate cutting, etc.


Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797; Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten Trioxide Films

Tungsten trioxide film is a new type of functional material, which has a wide range of applications in smart windows, a large area flat-panel displays, gas sensor, and so on the field. But because WO3 Films still have some shortcomings, such as discoloration and sensitivity is not high, it will cause a lot of restrictions in the application. In order to improve its performance so that it can be widely used, the optimization can generally divided into three kinds: one is preparing a novel surface topography WO3 film, the second is the preparation of nanometer WO3 composite film, third film doped WO3 modified. With further research to expand, need to find new chemicals, new fetters, explore preparation skills and preparation parameters appropriate to improve the surface appearance of the film become a hot topic. Currently, for performance optimization WO3 film discoloration research focused on electrochromic and temperament discoloration. And to improve its photochromic,less heat to research color and other properties. Future research in this area can be expanded.

 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 

Using Purple Tungsten Oxide Producing Ultrafine Tungsten Powder

There are four kinds of tungsten oxide, respectively as a yellow tungsten oxide, blue tungsten oxide, purple tungsten oxide, brown tungsten oxide. These tungsten oxides can be used as the raw materials of tungsten powder. Early , domestic production of tungsten powder use yellow tungsten oxide and tungsten acid as raw materials widely in 1960s and 1970s, many developing countries have adopted blue tungsten oxide as a raw material for production . China in the 1990s, replaced by blue tungsten oxide to yellow tungsten oxide, the reason is probably that the cost is too high acid, etc., so China chooses yellow tungsten oxide instead. But what kind of raw material most suitable for the production of ultra-fine tungsten powder is still uncertain. In addition to chemical activity associated with tungsten oxide specific surface area, particle size, shape, but also its closely related crystal defects. Purple tungsten oxide has large pore volume and micro-pore volume is small, and because of its unique crystal structure between fine-grained form it chaotically distributed there is a big gap, the gap in favor of these polymers when tungsten oxide in the reduction , in favor of hydrogen permeation and water vapor to escape. In the preparation of ultrafine tungsten powder and tungsten carbide powder fine superiority, and get a good application in production.
 
 
Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 
 

Tungsten Carbide Cutting Tools Oxidative Wear

Tungsten carbide cutting tools oxidative wear is another important manifestation of tungsten carbide cutting tools wear mechanism in the air. At 600 ° C or less, tungsten carbide cutting tools oxidative wear is not obvious, at 600 ° C or more, WC and Co tungsten carbide cutting tools begin to be oxidized within, wherein, WC is the main product of oxidation is WO3, The main product was the CO is oxidized CO3O4. At the same time, the ability to fine grain carbide cutting tools antioxidant than coarse grains of carbide cutting tools. In severe wear (3000r / min ,, 350N) cases, tungsten carbide cutting tools containing oxidation products friction surface binder phase CO generated as WO3 and COWO4, and friction product does not contain CO alloy surface is WO3 and WC . Wherein, CO is no separate oxidation products, which is due to the necessary conditions for CO oxidation during rubbing friction surfaces are brought together in a sufficient amount of CO, or can together form a W element oxide, i.e.

In nitrogen low friction coefficient of friction, wear small amount of nitrogen medium has good friction reduction, reducing tungsten carbide cutting tools oxidative wear occurs.

 

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797; Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten Carbide Rod Property

Tungsten carbide rods are manufactured as standards with one, two, or three holes, straight or twisted to a 30 or 40 degree helix, or solid with no holes. All rods are available in standard lengths of 310 and 330 mm.

Different Tungsten Carbide Rod Property

ISO Grade

Co Contents
(weight%)

Hardness
(HRA)

Density
(g/cm3)

TRS

(ISO3327)

Granularity

K05-K10

6%

94.0

14.75

3700

0.4-0.5

K05-K10

6%

92.5

14.92

3000

0.9-1.1

K20-K30

10%

91.8

14.45

3800

0.7-0.9

K30-K40

12%

92.0

14.15

3800

0.5-0.7

K30-K40

15%

87.6

14.00

4000

1.2-1.4

 
 
Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797; Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn
 

Purple tungsten Oxide Application

Purple tungsten oxide, was also known as TVO (purple tungsten oxide). It is not a chemical compound sense, but comprise different chemical composition, such as arsenic trioxide, tungsten, copper, and low levels of tungsten trioxide. The relative content of these compounds depends on the purple tungsten oxide calcination parameters. Xiamen Tungsten Online Technology Co., Ltd. produces two kind of purple tungsten oxide which has oxygen content content standards. Purple tungsten oxide is mainly used in the production of tungsten metal powder and tungsten carbide. Tungsten can also be used to produce ultra-fine powder and nano-tungsten powder. Purple tungsten and other tungsten oxide have large differences on the internal feature and structure. It is each particle by needle or rod grains loose particles group, which has a great gap grain structure, low bulk density, this structure is conducive to the reduction process of hydrogen and water vapor infiltration escape, therefore, suitable for the production of fine particles. Reduction obtained from purple tungsten and the tungsten powder fine and uniform particle dispersion between good so it is suitable for the preparation of an ultra-fine grain cemented carbide materials.

 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 

 

 

Tungsten Carbide Indexable Inserts Flaws

Tungsen carbide indexable inserts carbide material refers the indexable inserts that are made of tungsten carbide meterial. Tungsen carbide indexable inserts according to the shape can be divided into a diamond blade, triangular blade and circular blade. Tungsen carbide indexable inserts due to the strong hardness, long service life, commonly used in the cutting process. In the manufacturing process, tungsen carbide indexable inserts flaws embodied in easily chipped, not coated with the coating and corrosion spots and other fallout.



Tungsen carbide indexable inserts flaws affects the tungsen carbide indexable inserts performance, and therefore detect possible tungsen carbide indexable inserts flaws can further achieve prevention purposes. At present, the major domestic manufacturers of blades for tungsten carbide indexable inserts are used naked eye defect, magnifying glass, blowing oil-soaked sands, conventional testing methods and tools stereomicroscope microscope on the blade surface defect detection. These detection methods not only result in high labor costs, low efficiency, but also easily lead to missed. Undetected tool in use, especially in the case of high-speed cutting will result in serious consequences

 

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797; Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Solid Tungsten Carbide Drill Development Status

Solid tungsten carbide drills are made of cemented carbide, working in poor cooling and chip Conditions from the drill bit. High-end solid tungsten carbide drills bit products are mainly used in the automotive, aerospace, engineering machinery, high-speed, high-precision machining of other fields.

Solid tungsten carbide drills development status is reflected in two aspects. On the one hand, the Chinese market is currently common in high-end hard the whole drills, mainly from Europe, America, Japan and other industrialized countries, most of these companies in Singapore and mainland China have a lot of standard solid tungsten carbide drills inventory, and some non-standard solid tungsten carbide drills production also into China.

Solid tungsten carbide drills development status on the other hand reflects the current situation in most of the domestic enterprises of solid tungsten carbide drills with international line brand lies in the gap between design, manufacturing details, material selection and coating treatment. The performance gap between solid tungsten carbide drills largest domestic and specific products: drill for steel, replacing the gun drill whole twist drill, drill machining high-temperature alloys, high hardness steel and other materials. In these areas, there were only a few companies control the design and manufacturing technology.


Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797; Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Purple Tungsten Oxide Production Manufacture Process

Purple tungsten oxide using the APT as raw materials,which is during at the closed furnace in the industry. Under certain conditions, adding NH3 during calcination, and the NH3 will decompose H2 and N2, it will form a wet hydrogen atmosphere furnace in the stove, so that APT under mild reducing atmosphere, gradually decompose, generating purple oxide reduction. There are many factors in the process of preparing purple tungsten, one by the hydrogen reduction of tungsten oxide mechanisms apparent hydrogen greater humidity, the temperature required to obtain the higher tungsten purple, so choose the calcination temperature should be 770 ~ 815 ℃, Second, in the calcination process feed speed, tube speed, NH3 traffic and others factors affect the production of tungsten purple in varying degrees. In the preparation of tungsten purple we should to coordinate various relationships in order to produce a single phase purple tungsten. Its chemical equations are: 3 [5 (NH4) 2O · 12WO3 · 5H2O] = 2w18O49 + 40H2O + 35H2 + 15N2. Comprehensive variety of experimental results can be obtained tungsten production purple optimum parameters are as follows:

Temperature/℃

Delivery Rate/(kg.min-1)

Furnace tube rotational speed(r.min-1

NH3 Rate of Flow/(m3.h-1)

790~850℃

0.55

2.0

0.7

 

 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 

Comparison of blue and purple tungsten in producing of ultrafine tungsten powder

Ultrafine tungsten powder, tungsten carbide powder is an important raw material of cemented carbide powder particle size and uniformity will affect the performance of cemented carbide. Now use blue tungsten tungsten powder as raw material preparation popularly, it is as long as the cold, dry hydrogen, under conditions of high hydrogen stream, a thin layer of material can be reduced with hydrogen tungsten blue Preparation methods to produce ultra-fine tungsten powder. However, in production, the hydrogen flow rate is too high, the thin layer of material of high demand will lead to improve production costs. Purple and blue tungsten oxide has a different structure, which is composed of a large number of irregular or rod needle crystals. This structure makes it have good air permeability, on the one hand he was in favor of the hydrogen into the interior of the particles, increasing the reduction reaction. On the other hand it is conducive to the discharge reduction process produces moisture. So it has a better advantage in the production of ultra-fine tungsten powder in this respect. From purple tungsten tungsten output silty material uniformly, tungsten powder particle size is smaller. The output of tungsten powder blue tungsten presents more massive, and the surface roughness, there are more irregular cracks in the powder.

 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 

 

WeChat

Tungsten Metal

Tungsten Metal Price

Tungsten Alloy

Tungsten Alloy Price

Tungsten Carbide

Tungsten Carbide Price

Tungsten Powder

Tungsten Powder Price

Tungsten Copper

Tungsten Copper Price

Tungsten Oxide

Tungsten Oxide Price