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Time of issue:2020-03-17 00:00:00

Tel：086-731-22868219
Fax：086-731-28415766
Erin: 13873213272
Email : sales@chinatungstens.com
Address：No.5 Building, No.581 Heilong Jiang Road, Li Yu Industrial Park, Tian Yuan District, Zhuzhou, Hunan, P.R. China.

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Sapphire growth furnace

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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

aa09

Category

Sapphire growth furnace

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Ⅰ、 Physical and chemical properties

1 Purity：Mo≥99.95%；

　　　　　W ≥99.95%；

2 Density：Mo≥10.1g/cm³；

　　　　　 W ≥19.0g/cm³；

3 Application temperature environment：≤2300℃；

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.

Keyword:

upper and bottom cover plate

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pper and bottom cover plates

heater cover plates

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