Tungsten Information

Harms of Tungsten Carbide Cutting Tools WC Leaching

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 14:53; Hits: 244

Harms of tungsten carbide cutting tools WC leaching reflects on bad influernce on tungsten carbide cutting tools, tungsten resources, humans and the environment. Embodied in the following three aspects:
1. Influence on tungsten carbide cutting tools. In tungsten carbide cutting tools, WC is a hard phase of it. Tungsten carbide cutting tools WC leaching will reduce hardness and wear resistance, but also lead to loss of cobalt binder, thereby decreases hardness and strength of tungsten carbide cutting tools and dramatically shorten tools life. The impact of shortened tools life, on the one hand will bring an increase in the number of tool changes, reducing production efficiency; on the other hand will lead to increased manufacturing costs.

2. Influence on tungsten resources. Tungsten carbide cutting tools will lead to leaching of waste tungsten resources, is not conducive to the sustainable development of tungsten resources.

3. Influence on humans and the environment. Tungsten carbide cutting tools WC leaching will easily make operations workers contracted asthma, pulmonary fibrosis and allergic dermatitis and other diseases, On the other hand, Tungsten carbide cutting tools WC leaching into the cutting fluid,will cause serious environmental pollution.

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 Cutting Tools Breakage

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 14:53; Hits: 226

Tungsten carbide cutting tools breakage compered to tungsten carbide cutting tools wear is unnormal wear. Tungsten carbide cutting tools under certain conditions, if the stress (cutting force or thermal stress) is too much, damage may occur suddenly, it is tungsten carbide cutting tools breakage.

There are two typies of tungsten carbide cutting tools breakage: brittle plastic breakage and damage categories. Brittle damage includes crack, fragmentation, shedding and so on. Under normal circumstances, crack is caused by the too large feed amount or the cutting resistance .Thus, changing the feed rate or tool geometry can cope with it. If the tungsten carbide cutting tools material is too hard or temperature changes that tungsten carbide cutting tools can not afford, fragmentation appears. At this point you can choose more suitable tungsten carbide cutting tools material to deal with or start from the temperature control aspect. Shedding refers to the collapse of breakage under high temperature and pressure conditions, the surface of the cutting edge or tool or uplift phenomena such as chipping and so on.

Tungsten carbide cutting tools breakage is not an isolated form, usually of several forms of synthesis. Currently available from refining and grain, increase the coating, adding metals and heat treatment and surface heat treatment and other aspects to improve the durability of tungsten carbide cutting tools.

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

How to Make Tungsten Filament

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 11:58; Hits: 247

Firstly, place the powder into the iron or steel-made tube and then to shape through isostatic pressing which ensures force uniformity of the bar. After pressing, the powder shapes in a small size and can be easily removed. And then sinter the bar in sintering furnaces at at least 1,000℃. The time should be adjusted according to the size of the bar. The next step is to swage in the rotary swaging machine which will enhance the property.

Upon completing the shaping, the next begins drawing. Generally, a tungsten bar weighed 1.5 kilograms can be made into about 40-metered tungsten filament with the diameter of 1.588mm. This is all about the production of tungsten filament.

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

How to Make Lanthanum Tungsten Electrode

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 10:55; Hits: 247

The manufacturing process of lanthanum tungsten electrode is mainly applied in the TIG (tungsten inert gas welding) and PLASMA (plasma) fields for metal welding, cutting, painting, smelting and so on. This kind of method processes the following features:

a. Mix water with the solid raw material contained APT, slurry WO ↓ [3] and W powder into the state of slurry as lanthanum tungsten-coated powder.

b. The decomposition process of the lanthanum salty in powder happens in hydrogen. The first reduction temperature should be controlled at 600 ~ 700 ℃ for 2 ~3 hours and the second time at 800-970 ℃ by keeping the hydrogen flow at 0.5-2.0m ↑ [3] / h in the process.

The method makes a full decomposition and significantly improves conductivity in the process of incipient fusion. By decomposing and revivifying in the device simultaneously, this method effectively simplifies the manufacturing procedure and accordingly reduces the work hour and saves the energy sources.

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

Series: Super Weapon that Drops from the Clouds Ⅴ

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 09:12; Hits: 232

The power of tungsten bar

Thrown from space, the tungsten bar almost ruined London in the film. However, experts point out that at too high speed, the attack on large targets, say skyscraper, is limited and will only cut a hole on wall in the same way that high-speed bullet hits on windows. The intention of ruining a city with a tungsten bar needs much more studies.

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

Series: Super Weapon that Drops from the Clouds Ⅳ

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 09:08; Hits: 234

Alternative nuclear weapon

Dropping from the clouds with tremendous speeds and high shooting accuracy makes it possible to attack the enemy off guard and therefore wins tungsten bar lengendary reputation. What is more, with metal warhead, there is no danger of emitting radiation.

However, Rods from God is still under slow study for the key technology hits a bottleneck. For example, a large number of Rods from God is expected to be more than the satellite platform could bear which needs enormous energy and the spending to sent them into the space is beyond imagine. Furthermore, factors like atmospheric friction and air turbulence will influence the accuracy of satellite guidance especially without simulated experiment. As simply a conception, Rods from God is expected to appear in fictions and films in a long time.

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

Series: Super Weapon that Drops from the Clouds Ⅲ

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 09:04; Hits: 222

Rods from God

The tungsten bar in the movie seemed infinitely powerful. Does this kind of weapon really exist in real? Currently, a space-based weapon system of kinetic energy named Rods from God is launched in Amrica which bases on as same principle as that of tungsten bar. The whole system mainly consists of two satellite platforms located in the low orbit. One is responsible for communication and targeting while the other one is equipped with a large number of metal bombs of kinetic energy called Rods from God. The bomb is a metal bar made of tungsten, titanium and uraniun with diameter of 0.3 meters, length of 6.1 meters and weight of 100 kilograms. With small booster rockets, these metal bars can easily attack on any target areas within few minutes in the help of satellite guidance. Falling from space with distance of 1,000 km, they reach speeds of 11,587 km an hour. At high speeds closed to meteor, the metal bar gets tremendous kinetic energy which increases the shock of impact and causes serious damage when it hits the ground. In G.I. Joe: Back 2 Revenge, the Cobra launched seven satellites into the space track and once give orders the tungsten bar will aim to bomb the target.

Rods from God is expected to replace nuclear weapons. As military strategic weapon, nuclear bomb is strictly restricted for not only can it damage a city but exert an insidous influence on the Earth by nuclear radiation and radioactive dust. Rods from God or tungsten bar in the movie is hence thought to be an alternative.

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

Series: Super Weapon that Drops from the Clouds Ⅱ

Details: Category: Tungsten Information; Published on Wednesday, 29 April 2015 19:24; Hits: 233

A tungsten bar drop from the clouds

Literally, tungsten bar, also referred to as tungsten alloy bar, is a sort of metal bar made of tungsten. In the movie, a small bulk of tungsten bar was carried and threw by aeroplanes with formidable power to bomb a car or tank while a large bulk, launching to the Earth from space, can destroy a city with ease.

These tungsten bars need no detonating devices as traditional missiles but crash on the target with considerable force through kinetic energy. After entering the atmosphere layer, the tungsten bar goes flying in free fall with great kinertic energy which, according to the energy conversion law, is primarily transformed from the gravitational potential energy. Like a meteorite hitting the Earth, the tungsten bar exerts formidable force that can match the nuclear attack yet without radioactive dust as nuclear bombs do. The features of high melting point and high hardness make it suitable for tungsten to make the weapon. When an object goes fly through the atmosphere, the air around get heated at a temperature of about 1600 ℃ after continuous friction. Generally, metals get vaporized under such condition. But the melting point of about 3400 ℃ makes it possible for tungsten to remain the same state within the temperature.

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

Series: Super Weapon that Drops from the Clouds

Details: Category: Tungsten Information; Published on Wednesday, 29 April 2015 19:21; Hits: 248

G.I.Joe the Special Force is a meritorious army. In the movie, they defeated the terrorist organization Cobra and sent the leader to prison. However, the force of Cobra did not be exterminated. They hijacked the President and attacked the G.I.Joe who were found guilty of treason. The surviving members reunited the G.I.Joe, tracing clues of the Cobra's conspiracy. By luring Presidents of other countries to destroy nuclear bomb in the name of Amrican President, the Cobra invented a new type of missile tungsten bar with more formidable force that exceeds nuclear weapon. They threatened to control the world and only one bullet leveled London to the ground. In this series, let us have a close look at this sort of super weapon -- tungsten bar in G.I. Joe: Back 2 Revenge.

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 Coated Tools Development

Details: Category: Tungsten Information; Published on Wednesday, 29 April 2015 13:53; Hits: 232

Tungsten carbide coating method continues to progress, becoming more complex and diversified, so that the corresponding tungsten carbide coated tools development. Tungsten carbide coating method from the initial development of high-temperature chemical vapor deposition coating is a plasma chemical vapor deposition coating, the temperature chemical vapor deposition coating and ion-assisted physical vapor deposition coatings. Development direction carbide coating method is a physical vapor deposition.

Carbide coating types are constantly updated from a single compound coating towards the development of diverse and complex compound coating; coating layers from several layers to a dozen layers; a new type of coating substrates has also been introduced, carbide coating substrates with a graded structure of cemented carbide coated tool performance is further improved; the coating process not only upgrading, but also to achieve a flexible combination of a variety of techniques to obtain a high performance carbide coating Layer tool.

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