- Contact Person : Mr. Deng William
- Company Name : Shanghai XGM Material Co., Ltd.
- Tel : 86-21-51619229
- Fax : 86-21-60911306
- Address : Shanghai,shanghai,Tianshan Rd600
- Country/Region : China
- Zip : 200336
Tungsten hot zone, heating shields, working racks
Tungsten heating shields and working racks is best choice for LED Sapphire melting growing furnace application
1. Physical and chemical properties
(1) Density: 19.2g /cm3(2) Surface roughness: < 3.2
(3) Purity: W99.97%(min.)
(4) Application temperature environment:1800~2750
2. Specifications:
1)Dimensions and tolerances Unit:mm
thickness [mm] | tol [mm] | width [mm] | tol [mm] | length [mm] | tol [mm] | quality | flatness in % |
0.100 | +/- 0.030 | 200.0 | +/- 0.47 | 1000 | +5/-0 | cold rolled, bright | 15 |
0.200 | +/- 0.035 | 200.0 | +/- 0.47 | 1000 | +5/-0 | cold rolled, bright | 15 |
0.300 | +/- 0.035 | 200.0 | +/- 0.70 | 1000 | +5/-0 | cold rolled, bright | 15 |
0.400 | +/- 0.050 | 200.0 | +/- 0.70 | 1000 | +5/-0 | cold rolled, pickled | 15 |
0.500 | +/- 0.060 | 200.0 | +/- 1.00 | 1000 | +5/-0 | cold rolled, pickled | 15 |
0.500 | +/- 0.110 | 500.0 | +/- 1.20 | 1000 | +5/-0 | hot rolled, pickled | 20 |
1.000 | +/- 0.200 | 500.0 | +/- 1.20 | 1000 | +5/-0 | hot rolled, pickled | 20 |
3. Manufacturing process and equipment
Item | Process | Equipment | Quality check point |
1 | Powder mixed and purified | Mixer and Purified furnace | GDMS Powder grain size properties |
2 | Pressed & machined blank | Isostatic pressing machine | Measurement of rough-processed |
3 | sintering | High temperature vacuum sintering furnace | Dimension measurements for product |
4 | Hot rolling | Hot rolling machine | Measurements (thickness , width) |
5 | Annealing | Anneal furnace | Side crack, stratification for top |
6 | Check |
| Dimension Flatness and density |
7 | Warm rolling | High speed rolling machine | Dimension Flatness and density |
8 | Annealing | Annealing furnace |
|
9 | Check |
| Dimension Flatness and density |
10 | Cold rolling | High speed rolling machine |
|
11 | cutting | Hydraulic cutting machine | Dimension Measurements |
12 | annealing | Vacuum annealing furnace | Surface quality bubble on surface, |
13 | machining | x-ray cutting machine | stress, Flatness |
14 | check | Flat-stone mill | Final Quality |
15 | package |
| certificate of quality |
Tungsten hot zone, heating shields, working racks
