Tungsten Crucible

Tungsten crucibles introduction

1. Appearance: silver grey metal luster
2. Purity: W≥99.95%
3. Density: not less than 18.3g/cm3
4. Supply state: sintering or processing
5. Quality standard: according to customer

Specifications of Tungsten crucibles

diameter (mm)	thickness (mm)	height (mm)	Surface finish	inner surface finish	Inner bottom finish
30 ~ 50	2 ~ 10	<500	<Ra2.0	<Ra2.4	<Ra2.8
50 ~ 100	3 ~ 15	<1000	<Ra2.0	<Ra2.4	<Ra2.8
100 ~ 150	3 ~ 15	<1000	<Ra2.0	<Ra2.4	<Ra2.8
150 ~ 200	5 ~ 20	<1000	<Ra2.0	<Ra2.4	<Ra2.8
200 ~ 300	8 ~ 20	<1000	<Ra2.0	<Ra2.4	<Ra2.8
300 ~ 400	8 ~ 30	<1000	<Ra2.0	<Ra2.4	<Ra2.8
400 ~ 450	8 ~ 30	<1000	<Ra2.0	<Ra2.4	<Ra2.8
450 ~ 600	8 ~ 30	<1000	<Ra2.0	<Ra2.4	<Ra2.8

Special sizes can be manufactured based on customers' requirements

Production process of Tungsten crucible

raw materials (tungsten powder) --- isostatic pressing --- mechanical processing --- IF induction sintering --- mechanical processing–detection check --- tungsten crucibles

Production equipments

CNC vertical turning machine, CNC milling machine, wire cutting machine

Application Tungsten crucibles

Since the melting point of tungsten has reached 3380^oC, tungsten crucible is widely applied in industry furnace such as sapphire growth furnace, quartz glass melting furnace, and rare earth smelting furnace. The temperature in working environment of tungsten crucible is above 2000^oC. For sapphire crystal growth furnace, high-purity, high- density, no internal-crack tungsten crucible with other features of exact measurement and smooth surface has decisive influence on success ratio of seed growth, quality control of pulling crystal, metamictization pot-committed and service life during sapphire growth process, and we are willing to be checked by professional units.