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99.95 polishing Tungsten Price Kg Tungsten Round Bars Price

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99.95 polishing Tungsten Price Kg Tungsten Round Bars Price

product beschrijving
Tungsten bar/rod is mainly used to found ingredient of material, cutter and heads, tungsten wire for lights instruments, electric contact points and conductor of heat, crankshaft and cylinder barrel of advanced automobile, ingredient of kinds of heat-resistant steel. Also used for making special steels, to make guns, artillery rockets, satellite airplane and ship. Tungsten bars have a luster rather like that of silver in uniform color. Though the whole tungsten bars may slightly curve, the maximum height of the bend should not be more than 7mm. The most popular application of tungsten bar is in steel making industry. Tungsten bars are used to improve the property of steel.

Tungsten bar with impurities is used to procedure bulb filaments or electron tube filaments, which are guaranteed to have remarkable resistance to high temperature.

Porous Tungsten as a high current density cathode is one of the important applications of the metal, which is mostly used in high temperature conditions due to its exceptional resistance to melting (T-m = -3410 +/- 20 degrees C).

Its porous form has been a crucial component of dispenser cathodes used in electronic valves and high power lamps. Porous tungsten skeleton forms the matrix. which is then impregnated with an electron emissive compound. Upon every emission front the surface, new material has to be fed into the surface pores via the open pore channels. Hence it may be proposed that a uniform porosity is needed for a better performance. However, a controlled porosity has not been achieved yet.

Bovendien, sintering of tungsten has always been difficult due to the extreme process conditions. A high sintering temperature (T-s >= 2000 degrees C) and a strong reductive atmosphere (hydrogen) have been the absolute necessity in making these parts. This study further explores an alternative sintering technique being developed. The idea is based on the reactive sintering concept. The energy output from the exothermic reactive system of tungsten oxide and aluminium has been the heat source for sintering porous tungsten. As a result, sintering temperature and time have been reduced considerably. Higher homogeneity, thus more uniform pore distribution, was observed.

A better control of porosity related to the pressing and sintering conditions was achieved by the characterisation method previously developed. Microhardness has been a useful monitor of the scatter in porosity of the parts. Throughout the study, SEM was used to observe the porous Structures and powder morphologies. DSC and XRD were useful to follow the microstructural evolution in the reactive system.

producten
99.95 polishing Tungsten Price Kg Tungsten Round Bars Price
Zuiverheid
≥99.95%
Technologie
Powder Sintering
Materiaal
W1,W2
Oppervlakte behandeling
Grinding
Dimensie (mm)
OD 3.0 ~ 12 mm Lenght 800 mm-1000mm
Total Porosity
40% Max.
Sollicitatie
electrodes in the field of rare earth metal industry
Chemische samenstelling
Tungsten
Fe
Ca
P
Sn
Al
In
N
Sb
W1
0.001
0.001
0.001
0.0001
0.0001
0.00035
0.002
0.0001
Balance
Bi
Mo
Mg
C
En
O
Pb
As
99.95%
0.0001
0.0008
0.0001
0.00085
0.001
0.0047
0.0001
0.0001
Finished Form
Specified Diameter (mm)
Min.Length (mm)
Diameter Tplerance

Wroughted

2.8≤d<5.0
600

+/-2%

5.0≤d<6.5
300
6.5≤d<11.0
200

Straightened

0.8≤d<1.0
1000

+/-2%
1.0≤d<3.0
800

Grond

0.8≤d<3.0
800~1000
+/-0.03 mm
3.0≤d<6.5
300~600
+/-0.03 mm
6.5≤d<10.0
200
+/-0.03 mm
Sollicitatie

Suitable for producing ion implantation parts;

For producing electric light source parts and electric vacuum components;

For producing heating elements and refractory parts in high temperature furnaces;

Used as electrodes in the field of rare earth metal industry.

Voordelen::
1.High density.
2.Good mach-inability.
3.Good mechanical properties.
4.High Modulus of elasticity.
5.High absorption capacity against x-rays and y-rays.
6.Harmless and environment friendly.

The Related products

kantoor

fabriek

werkplaats

smelting furnace

Inpakken & Levering

Verpakkingsdetails : soft paper inside with wooden case outside

Delivery Details : 10-15 werkdagen

Onze certificeringen

Our R&D center

We have five engineers,engaged in researching the usage of nitinol shape memory alloy products ,especially in medical and aerospace areas.

Senior Engineer

Mr. Deng

Customer Photo

The exclusive supplier contract

Joe is from US.He is the scientist of nitinol.He signed the exclusive supplier contract with us after his visiting !

Now,he is one of our big customers !
He sells our products to US market!

Customers from HK &Korea

We become their long-term relationship supplier for nitinol flat wire and springs!

Thanks a lot the support and trust from all our customers!

We will keep improve to make you satisfied forever!

Our customers spread over North America, Zuid-Amerika, Europa, Southeast Asia etc.

MEDTRONIC VISITED OUR FACTORY

FAQ

Q: Bent u handelsmaatschappij of fabrikant ?

EEN: Wij zijn in de fabriek:.

Q: Hoe lang is uw levertijd??

EEN: Over het algemeen is dat zo 5-10 dagen als de goederen op voorraad zijn. of het is 15-20 dagen als de goederen niet op voorraad zijn, it is according to quantity.

Q: Levert u monsters ? is it free or extra ?

EEN: Ja, we could offer the sample for free charge but do not pay the cost of freight.

Q: Wat zijn uw betalingsvoorwaarden ?

EEN: Betaling<=1000USD, 100% van tevoren. Betaling>=1000USD, 30% T / T vooraf ,saldo vóór verzending.
Mocht je nog een vraag hebben, Neem gerust contact met ons op zoals hieronder:

Extra informatie

plaats van herkomst:

Shaanxi, China

Merknaam:

seabird

Modelnummer:

seabird-007

maat:

dia1mm-12mm

Kleur:

ground surface and polishing

certificate:

ISO 9001:2015 Rosh

Techniek:

Sintering

Bedrijfstemperatuur:

≤ 2500 Deg. Celsius

zuiverheid:

W1 – 99.95%

Sollicitatie:

Thermionic Emission Cathodes

Porosity:

30%

Dikte:

18.0-18.2 G/cm3

producten:

99.95 polishing Tungsten Price Kg Tungsten Round Bars Price