long length tungsten bar for high temperature furnace heating element
- tungsten rod bar from Sifon:
High melting point (3410 centigrade)
Low thermal expansion
High electrical resistance
Low vapour pressure
Good thermal conductivity
High density
According to the diamter, we have different production way for tungsten bar.
1. Small diameter like Ø5mm produced by swaging/spining,
2. if the diameter is up to 15mm, we will forge the rod after sintering, it will have high density.
3. When the diameter is as big as 150mm, we can only sinter it because of the big dimension. Density would be above 18.5g/cm3
All tungsten rod surface could be black, lathe-polishing and grinding according to customer’s requirments.
Tungsten rods are mainly used as heater, support pillar, feeder and fastener in vacuum or reducing atmosphere high temperature furnace. Also as light source in lighting industry, electrode in glass melting, and welding equipments.
tungsten powder---isostatic pressing--high temperature furnace sintering---become tungsten rod ingot---swaging for thin diameter---black surface---polish to bright surface
tungsten powder---isostatic pressing--high temperature furnace sintering---become tungsten rod ingot---forging for big diameter---black surface---lathe and then polish to bright surface
| item | surface | diameter/mm | length/mm | La2O3 content | density(g/cm³) | producing methord |
| Dia | tolerance | L | tolerance |
| tungsten alloy rod | grind | ≥3-25 | ±0.05 | ＜5000 | ±2 | 1% | ≥19.1 | swaging |
| ＞25-150 | ±0.1-0.2 | ＜2000 | ±2 | 1% | ≥18.8 | forging |
| ＞150 | ±0.5 | ＜800 | ±2 | 1% | ≥18.5 | sintering |
| black | ≥3-25 | ±2 | ＜5000 | ±2 | 1% | ≥19.1 | swaging |
| ＞25-150 | ±3 | ＜2000 | ±2 | 1% | ≥18.8 | forging |
| ＞150 | ±5 | ＜800 | ±2 | 1% | ≥18.5 | sintering |
For the tungsten Rod, following is the normal tungsten rod dimension form. For any special dimension, call us please.
As the manufacturer, firstly, we have very good quality control system, the products will be inspected by each step including the surface, the dimension, crack, or other inspection item as cumtomer requires.
Secondly, as a factory, our price has obvious advantages. We'd like to make our customer purchase good quality products with good price. It's a win-win business.
What's more, we have full after sales service. In case there is a quality problem, we are responsible. And we will do our best to solve the problem to make our customer satisfied.
We have kinds of inspection equipments. Such as CMM, ultrosonic inspection, hardness tester, metallography analysis apparatus etc.
- Packing & shipping for tungsten rod bar:
To ensure the safety during transportation, products will be packed accordingly with exportable wooden box with foam sheet protection inside.
If customer has special packing requirments, we will try to meet them.
Considering for the shipment, we suggest the length within 2m if it didn't affect the usage of the tungsten rod.
If products are suitable for vacuum packing, we will vacuum pack them.
Note: When you received the products, open the package carefully, some parts are sharp and heavy, please protect yourself. And if there is any damage, remember to contact with us in time, we will solve the problem soon for you.
1. How do you insure the quality is good?
--Our products are produced by ourselves from the begining. And we could control the quality step by step by inspecting the products at each step. Before shipping, our inspection department will check all the products carefully, including dimension, material, surface.
2. Could you make sure the shipping safety?
--yes, we will pack the goods carefully with wooden box and foam sheet inside to protect the products. Some special products, we will make mould for it to make sure the shipping safety.
3. Can I get free sample?
--yes, we'd like to offer free sample if the sample costs less than $100. We will arrange the shipping as freight collected.
For more information, please contact with me:
email: xiaqiaozhen@lysifon.com
Tel: 86 18638869625
whatsapp: 18638869625
skype: moonxia520
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19g/Cm3 Density Swaging Spining Tungsten Rod Bar ISO9001 Images
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