About Us CONTACT
Telephone:0731-22868219
Fax: 0731-22868219
Email : sales@chinatungstens.com
Contact address: Building 5, 581 Heilongjiang Road, Liyu Industrial Park, Tianyuan District, Zhuzhou City, Hunan Province
Details
Upper and bottom cover plate
Classification:
Key words:
upper and bottom cover plate
cover plate of heater
heater cover plates
pper and bottom cover plates
heater cover plates
E-mailL:
Mobile(whatsapp):
Product Description
Ⅰ、 Physical and chemical properties
1 Purity：Mo≥99.95%；
W ≥99.95%；
2 Density：Mo≥
W ≥
3 Application temperature environment：≤
Ⅱ、 Measurements and tolerances
Unit：mm
|
Thickness |
Max diameter |
|
2.0±0.1 |
660±0.2 |
|
1.0±0.08 |
660±0.2 |
|
0.5±0.04 |
660±0.2 |
|
0.3±0.03 |
660±0.2 |
Special sizes can be manufactured based on customers' requirements
Ⅲ 、Manufacture process and equipment
| Molybdenum reflection shield | Item | Process | Equipment | Quality check point |
| 1 | Molybdenum sheet or tungsten sheet | 1. Physical and chemical properties 2. Measurements (length, width, thickness) 3. Surface quality | ||
| 2 | Check | |||
| 3 | Wire cutting | Wire cutting machine | 1. Surface cleaness | |
| 4 | Machine | NC milling machine, bench drill, lathe | 2. Tolerances on the drawings | |
| 5 | Clean | 3. No peeling and crack | ||
| 6 | Check | |||
| 7 | Assembly | Assembly platform | 1. Surface cleaness | |
| 8 | Clean | 2. Assembly stability | ||
| 9 | Check | 3. Assembly tolerances | ||
| 10 | Pack | 4. Issue certificate of quality |
Ⅳ、Application
As the heat shield parts in the sapphire growth furnace, molybdenum heat shield, molybdenum upper cover and bottom cover have the key influence on the heat reflection.
High purity, accurate dimenisons, smooth surface, easy assembly, and reasonable design of the molybenum heat insulator will be very important for the sapphire ingot quality.
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