1. Rest bucking bar on inserted rivet and try to locate its point of balance.

2. With gun set in place, use bucking bar to push rivet (and gun assembly) outward.  Bucking bar will then register at right angles to the rivet as it comes to rest on the aluminium.

3. Push rivet back into place with gun set and reposition bucking bar, if necessary, to maintain its point of balance on the rivet. (repeat steps 2 and 3 until point of balance is determined).  Often the index finger can be placed on the back of the bucking bar directly opposite the rivet tail. It then becomes the 'sensor' for correct bar position.

4. Pressure is held on gun while riveting.  Bucking bar is held with only moderate force (otherwise rivet may be set with head proud of surface). A rubber grommet may be used over the rivet tail to assist in squeezing parts together during riveting.  It acts as a 'pressure plate'

5. Duration of riveting is determined by experimentation with a test piece or previous experience.

Tungsten Bucking Bar Manufacturer & Supplier: Chinatungsten Online - http://www.buckingbar.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
PC Version: Tungsten News & Tungsten Prices: http://news.chinatungsten.com
3G Version :Tungsten News & Tungsten Prices : http://3g.chinatungsten.com
WML Version:Tungsten News & Tungsten Prices: http://m.chinatungsten.com
 

Oxidation of tungsten rhenium thermocouples used to solve the physical structure of tungsten rhenium thermocouple temperature oxidation problems . Which is characterized by high temperature oxidation. In oxidation, reduction , or alternating between the two atmospheres , and the price is cheap, only platinum and rhodium 1/ 2 to 1/ 4 . Thus, in 1996 a national new product certification, and obtained national patent.
The products are mainly used in metallurgy , chemical industry, refractory furnace and coal gasification or sulfur recovery unit for temperature measurement , the main technical indicators :
Model No indexing ASTM

Indexing Tolerance Measuring range (℃) Applicable atmosphere

WR □ W-134 □ WRe3-WRe25
(W3) D ± 1.0% t 0 ~ 1700

Oxidation, reduction , or both alternately

WR □ W-13525 WRe5-WRe26
(W5) C
WR □ W-13530

Varieties and specifications

Type protective tube

Structure Diameter (mm) Material

WR W3 W-134 □ Single Tube 8 ~ 16 corundum
WR W3 W-13525 Double

Composite pipe materialized

Structure 16 ( inside ) × 25 ( outside ) corundum

WR W3 W-13525 12 ( inside ) × 25 ( outside ) corundum ( internal )
+ SiC ( outside )

WR W3 W-13530 16 ( inside ) × 30 ( outside ) corundum ( internal )
+ SiC ( outside )

WR W3 W-13530 16 ( inside ) × 30 ( outside ) corundum ( internal ) +

Cermet ( outside )

● Protection tube diameter and length specification table (mm)

Φ16 ( single tube ) Φ20

Length L is set deep l length L is set deep l

300 150 400 250
350 200 450 300
400 250 550 400
450 300 650 500
550 400 900 750
650 500 1150 1000
900 750 1650 1500
1150 1000 2150 2000

Note : Metal ceramic tube up to 500 l .


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com;sales@xiamentungsten.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

 

HNWL tungsten rhenium thermocouple is a thermocouple with superior high temperature , long-term use at 2000 degrees measurement occasions , the measurement temperature up to 2800 degrees, the highest temperature thermocouple to measure the product 's products , tungsten rhenium thermocouples very high thermal stability , with a special coat protective tube can also have long-term oxidation at 1600 degrees occasions substance use , can replace the platinum-rhodium thermocouple as metallurgy , building materials , aerospace, nuclear industry, the temperature of the measurement products.

HNWL Tungsten Rhenium Thermocouples Use :

Current measuring a temperature above 1600 ℃ , the use of non- contact method , however, the method of error is large , such as the contact law can accurately measure the real temperature . In the high-temperature thermocouples , precious metal thermocouples are expensive and the maximum temperature only in 1800 ℃ below, while tungsten rhenium thermocouple temperature limit is not only high, but good stability, therefore , tungsten rhenium thermocouples in metallurgy , building materials, aerospace , aviation and nuclear industries have been widely used . Rich resources of tungsten , tungsten- rhenium thermocouples cheap, can be partially substituted precious metal thermocouples , it is the high-temperature test promising field of temperature materials . Easily oxidized tungsten- rhenium thermocouples , suitable for hydrogen in an inert or dry use , or dense protective tube isolated in order to use it with oxygen . Carbon-containing atmosphere can not be used ( as in the use of hydrocarbon-containing atmosphere , the temperature exceeds 1000 ℃ i.e. by corrosion) . Tungsten or tungsten- rhenium in a carbonaceous atmosphere is easy to form a stable carbide , that reduce the sensitivity and cause brittle fracture, in the case of the presence of hydrogen , is accelerated carbonation .

HNWL Tungsten Rhenium Thermocouples Type Description :

HNWL tungsten rhenium thermocouples divided into three categories , one category is used in fine ceramic protection tube , the other is pure molybdenum protection tube, then a class is a tungsten protective tube . Ceramic tube specifications: diameter Ф8, Ф10, Ф12, Ф14, Ф16, length 300 ~ 1100mm, such thermocouples work atmosphere free from the restrictions in any atmosphere, long-term use , temperature range is 0 ~ 1800 ℃ the ; molybdenum and tungsten tube tube specifications: diameter Ф6, Ф8, Ф10mm, length 500 ~ 700mm, this thermocouple only in a vacuum , reducing or inert gas environment and long-term work , molybdenum tube preferably in 1800 ℃ long-term use at temperatures below , short-term use temperatures up to 2000 ℃; as tungsten tube is able to work at 2100 ℃ long-term , it is difficult to process resulting in the price is very expensive.


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com;sales@xiamentungsten.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- rhenium thermocouples is high temperature thermocouples. It has the potential of a linear relationship between temperature , thermal stability , reliable, cheap, etc. . And display instrument for direct measurement of liquids , steam and gases such as temperature. It can partially substitute platinum-rhodium thermocouple as high metallurgical industry , high-temperature electronic thermoelectric systems and space vehicle structural engineering , ultra-high temperature nuclear reactors measurement tools .

Tungsten- rhenium thermocouples for temperature dependence of thermopower meet ZBN05003-88 indexing table , equivalent ASTME696-84 standards. In a vacuum , reducing , inert atmosphere , at 0 ~ 2300 ℃ range. The use of special protective tube tungsten rhenium even can at 1600 ℃ under oxidizing atmosphere, long-term use , its price is lower than the platinum- rhodium thermocouple .

Tungsten- rhenium thermocouples is 1931 by Goedecke ( Ge virtues g ) first developed out at 60 to 70 years to develop the most successful refractory metal thermocouples. Tungsten- rhenium thermocouple is characterized by: a high melting point hot wire (3300 ℃), vapor pressure, easily oxidized ; in a non- oxidizing atmosphere, good chemical stability. Emf , high sensitivity , the most important is cheap. Tungsten- rhenium thermocouples is 60 years developed a high temperature thermocouple, a W / (W-26Re), (W-3Re) / (W-25Re), (W-5Re) / (W-26Re) and ( W-5Re) / (W-20Re) and so on. Long-term use temperature of 2000 ~ 2400 ℃, short-term use up to 3000 ℃. In the low-temperature thermocouples , (Au-2.1Co) / Cu thermocouple, the 10K or more thermoelectric power greater than 10μV / K; gold contains trace amounts ( about 0.07 atomic percent ) alloy of iron and nickel-chromium alloy composition thermocouple, at liquid helium temperature (4K) thermoelectric power greater than 10μV / K, all the better . (Pt-0.1Mo) / (Pt-5Mo), (Pt-1Mo) / (Pt-5Mo) and tungsten , and 0.5 to 1 ( atomic% ) alloy of osmium and rhenium tungsten alloy thermocouples in nuclear irradiation conditions. In addition to metallic materials, graphite and other non-metallic materials, refractory compounds can also be used as high temperature thermocouples. The advantage of such materials are high melting point , high temperature stability, high thermal potential and thermoelectric power , etc. ; drawback is brittle materials , graphite is easy to absorb moisture and changes in thermal resistance , poor reproducibility , but also in research and development into . Such thermocouples with carbon / graphite , graphite / carbide , carbide / carbide .


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com;sales@xiamentungsten.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