WCu Copper Copper Tungsten Alloy Submerged arc welding contact with
85W15Cu
Submerged arc welding contact tips:
Generally contact tips was made of copper or the (chromium
zirconium copper). Currently, most of the big vessels and big
diameter oil pipe need be welded by automation welding machine,
which means it need complete the welding process without the stop.
Those process controls ensure the welding as good quality. CuCrZr
contact tips soft temperature around 800ºC, its less wear
resistance capability can not guarantee the 24 hours welding system
keep welding without stop to replace the tips.
JBNR develop the new technology of SAW welding contact tips by
using copper tungsten to keep higher softer temperature, higher
wear resistance, and CuCrZr material which keep good thermal
conductivity.
Our customers are using our contact tips and proved our product
have very good quality. They feedback our new contact tips’ life
time is at least 5 times longer than the Cu and CuCrZr.
| content(%wt.) | density(g/cm3) | conductivity(%IACS) | hardness(HRB) | RWMA |
| Cr: 0.5-1.5% Zr:0.05-0.25% Cu:balance | 8.9 | 80 | 80 | class 2 |
| content | Density | Hardness | Conductivity | Class |
| W75Cu25 | 14.5 | 90 | 38 | 11 |
| W80Cu20 | 15.2 | 98 | 34 | 12 |
Advantages:
1. High thermal conductivity
2. Excellent hermeticity
3. Excellent flatness, surface finish, and size control
4. Semi-finished or finished (Ni/Au plated) products available
5. Low porosity
Product Properties:
| Grade | W Content | Density g/cm3 | Coefficient of thermal Expansion ×10-6 (20℃) | Thermal conductivity W/(M·K) |
| 90WCu | 90±2% | 17.0 | 6.5 | 180 (25℃) /176 (100℃) |
| 85WCu | 85±2% | 16.4 | 7.2 | 190 (25℃) / 183 (100℃) |
| 80WCu | 80±2% | 15.65 | 8.3 | 200 (25℃) / 197 (100℃) |
| 75WCu | 75±2% | 14.9 | 9.0 | 230 (25℃) / 220 (100℃) |
| 50WCu | 50±2% | 12.2 | 12.5 | 340 (25℃) / 310 (100℃) |
Application:
They are extensively used as thermal mounting plates, chip
carriers, tungsten copper flanges, and frames for RF, light
emitting diodes and detectors, laser diode packages like pulse,
single emitter, bars and complex carriers for optoelectronics
amplifiers, receivers, transmitters, tunable lasers, etc.
