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佳邦难熔
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Time of issue:2020-03-17 00:00:00

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Upper and bottom cover plate

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Upper and bottom cover plate

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Product serial number
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Ⅰ、 Physical and chemical properties

1  PurityMo99.95%

     W 99.95%

2  Density:Mo10.1g/cm3

      W 19.0g/cm3

3  Application temperature environment:2300

 

Ⅱ、 Measurements and tolerances

Unitmm

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

 

  、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.

 

Keyword:
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