Factory Spot Direct Sales of Pure Tungsten Wire Supply
Description:
Once tungsten filaments are used at high temperatures and
recrystallized, they become very brittle and are very easy to break
under impact or vibration. In some electric light source products
that require high reliability, in order to prevent the filament
from breaking, 3-5% rhenium is often added to the doped tungsten
filament, which is called tungsten rhenium filament. It can reduce
the ductile-brittle transition temperature of tungsten to room
temperature or below. This is a very peculiar rhenium effect. So
far, no element has been found to replace rhenium and produce the
same effect in tungsten.
Tungsten has good acid and alkali resistance at room temperature,
but it is easily oxidized in humid air, so thin tungsten filaments
cannot be stored in a humid environment for too long. In addition,
tungsten begins to react with carbon to form tungsten carbide at
around 1200℃, so this problem should be paid attention to in the
hydrogen burning treatment of the filament, otherwise the tungsten
reacts with the graphite lubricant on its surface, and the filament
will become brittle and break.
Specifications:
mm |
diameter |
length |
Diameter tolerance |
surface |
State |
rod |
8.0~16.0 |
10~850 |
10~660 |
Black |
forged |
3.0~8.0 |
10~5000 |
10~800 |
Black |
forged |
wire |
1.5~3.0 |
10~8000 |
10~1600 |
Black |
drawing |
0.5~1.5 |
10~8000 |
10~2650 |
Black |
drawing |
Packing & Delivery:
To better ensure the safety of your goods, professional,
environmentally friendly, convenient and efficient packaging
services will be provided.
Our inspection equipment:
FAQ:
Q: What information should I let you know if i want to get a
quotation?
A: The required material dimension
(Thickness*Width*Length,diameter*length; if possible, please kindly
supply us drawings).
The required more information, such as Surface Condition, Tolerance
Request, The Quantity, and other mechanical and technical details.
If it is possible, please also provide the application of products,
we will recommend the most suitable products with details for
confirmation.
Q: How do you gurantee the quality of the products?
A: Each step of production and finished products will be carried
out inspection by QC department before storing in the warehouse. NG
goods are not allowed in the completed goods warehouse.
Q: Can you guarantee the prompt delivery?
A: Yes, when we get your inquiries, not only we will evaluate the
more competitive price, but also we can get the most reasonable
delivery time. So the prompt delivery can be guaranteed.
Q: What is the shipping cost?
A: The shipping cost is determined by the destination port, weight,
packing size, total CBM of the products, we will try best to get the most reasonable shipping cost
from the forwarders or express couriers to help you save more
money.
Q:What is the transportation way?
A:If the Gross Weight ≤45kg, it's better by express such as TNT, DHL, FedEx,, etc.
If the Gross Weight between 45kg to 100kg, by express or by air to
your nearest airport can be both considered.
If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the
nearest port.
