Prix FOB
Obtenir le dernier prix20 ~ 40 USD / Meter ( Negotiable )
|1 Meter Minimum Order
Pays:
China
N ° de modèle:
-
Prix FOB:
20 ~ 40 USD / Meter ( Negotiable ) Obtenir le dernier prix
Localité:
China
Prix de commande minimale:
20 per Meter
Commande minimale:
1 Meter
Packaging Detail:
plastic innner, carton outside
Heure de livraison:
within one week
Capacité de Fournir:
-
Payment Type:
L/C, T/T
Groupe de produits :
-
Personne àcontacter Mr. Eric
No.18 Nanxin 2nd Road,Xinwu District, Wuxi, Jiangsu
tungsten
rhenium wire is tungsten rhenium alloy wire, made by metal rhenium
powder and tungsten powder. Through production processes. such as
forging etc. with powder metallurgy technology.Tungsten rhenium
wire are mainly used for the production of dual tungsten rhenium
wire, electrode of high-performance lamp, electrodes of laser and
cathode of electron tube etc.
The wires is solid, round, smooth and be
free of weld joints, slivers, kinks, pits or nicks exceeding 5 % of
diameter . Tungsten rhenium wire surface is uniformly clean and
free of discoloration. The thermo elements is heat treated to
provide the specified ductility.
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Tungsten rhenium wire is used for heating
elements in high temperature furnaces, thermocouples and in
electronics. Its advantage is its ability to maintain greater
ductility compared to tungsten after exposure to extremely high
temperatures. Tungsten wire has fiber structure, when the
temperature reaches ********0℃, the tungsten filament would turn,
and cause high-temperature sag. To improve the quality of tungsten
wire, it is always mixed some additives during sintering
procession, such as Na2O, K2O, SiO2, ThO to enhance the capacity of
high-temperature creep resistance and high temperature anti-sag of
tungsten wire. In order to improve the tenacity of tungsten wire
and prevent the deformation under high temperature, it usually
added some oxides, such as silica, alumina, potassium and so
on.
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Tungsten rhenium wire is the most common
material used to produce heaters for dispenser cathodes.
Performance variation may be attributable to a range of factors,
including cold work and rhenium content
variation.
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Specification:
Tungsten rhenium wire main specifications
are : W-Re1%，W-Re3%，W-Re5%，W**0%Re,W**5%RW**6%Re.
Positive thermo
element:
The positive thermo element  for the
W3RE/W*5RE combination have a nominal composition of *7 % tungsten
and 3 % rhenium.
The positive thermo element  for the
W5RE/W*6RE combination have a nominal composition of *5 % tungsten
and 5 % rhenium.
The positive thermo element is doped by the
addition of potassium, silicon, and aluminum compounds or
otherwise, Stabilized by the addition of volatile substances that
promote desirable grain structure and workability and maintain
ductility after high temperature use.
Negative thermo
element:
The negative thermo element for the
 W3RE/W*5RE combination have a nominal composition of *5 %
tungsten and *5 % rhenium.
The negative thermo element for the
 W5RE/W*6RE combination have a nominal composition of *4 %
tungsten and *6 % rhenium.
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Diameter:Â 0.**1.1mm
Common
Uses:Â Due
to its excellent physical properties, our high-performance Tungsten
Rhenium wire could be used as resistance wire in special
fields,cathode filament,ion source wire and surgical probe used in
medical field
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Tips of Tungsten Rhenium Wire
Use:
·  The
positive pole is either WRe3 or WRe5; the negative pole is either
WRe*5 or WRe*6
·  Temperature point: When the cold junction
temperature is at 0, the temperature of the hot junction is at
**********************0; the EMF value of the φ0.1mm wire is
calibrated at the Palladium(Pd) melting point, let q(Pd)=***4,we
use purity Platinum melting point to calibrate theφ0.1mm wire in a
form test, let q(Pt)=***9.
·  Uniformity: the non-uniform electromotive
force of the single pole thermocouple wire, from head to heel,
should ≤±*0 mv at ***0.
·  Ductility: After stable anneal, the
thermocouple wire can wrap itself six circles without
cleavage.
·  Supply
condition: the thermocouple wire is supplied after stable anneal,
its silvery white color.
·  Hot
junction weld: Make the positive and negative pole of the wire in
order, use forceps to nip the wire and heating upon an alcohol
burner. After twisting **5 circles, use an argon arc to weld into a
ball shape.
·  The W/Re
thermocouple bare wire can be used for a long time only in vacuum
argon and inert atmosphere; it can not be used in the oxidizing
atmosphere for a long time except it is insulated from the air by a
shield or heat resistant protection tube.
·  WRe*-WRe*5 thermocouple should match with
its special compensating cable type WC3. There are four kinds of
cable, such as bare wire plastic covered rubber covered and metal
shielded wire.
·  WRe*-WRe*5 thermocouple should match with
the Type D calibration indicator to monitor the temperature. Now in
China there are more than ten factories making many types of the
indicator.
·  Outer
protection tube for the φ0.5mm W/Re thermocouple
wire
·  Storage
of the W/Re thermocouple wire: the wire should be packed in a
waterproof and damp-proof bag. For long time storage, it should be
put in a dry vacuum glass jar which has silica dryer in
it.
| Pays: | China |
| N ° de modèle: | - |
| Prix FOB: | 20 ~ 40 / Meter ( Negotiable ) Obtenir le dernier prix |
| Localité: | China |
| Prix de commande minimale: | 20 per Meter |
| Commande minimale: | 1 Meter |
| Packaging Detail: | plastic innner, carton outside |
| Heure de livraison: | within one week |
| Capacité de Fournir: | - |
| Payment Type: | L/C, T/T |
| Groupe de produits : | - |
