Tungsten cover plate

Physical and chemical properties

Purity: Mo 99.95%;
W 99.95%;
Density: Mo 10.1g/cm3 ;
W 19.17g/cm3;

Measurements and tolerances

Thickness(mm)	Max diameter(mm)
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

Item	Process	Equipment	Quality check point
1	Mo sheet or W sheet		1 Physical and chemical properties
2	Check		2 Measurements (length, width, and thickness ) 3 Surface quality
3	Wire cutting	Wire cutting machine	1 Surface clearness
4	Machining	CNC milling machine	2 Tolerance according to drawing
5	Clean	Bending machine	3 No pollutant on surface, and no crack
6	Check	Drilling press, Lathe
7	Assembly	Assembly platform	1 Surface clearness
8	Clean		2 Solid structure and no loose
9	Check		3 Assembly tolerance
10	Package		4 Show certificate of quality

Tungsten cover plate application

As the heat-shield parts in the sapphire growth furnace, the most decisive function of upper and bottom cover plate is to prevent and reflect the heat in the furnace. Heat-shield parts with high-density, exact-measurement, smooth-surface, convenient-assembly and reasonable-design has great significance in improving the crystal-pulling.

Tungsten cover plate

Physical and chemical properties

Measurements and tolerances

Manufacture process and equipment

Tungsten cover plate application

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