Product Specifications
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Classification: |
Light Metal |
Product Description
Beijing Sunstone Tungsten Molybdenum Co., Ltd
Can supply all kinds of tungsten crucibles and the whole set of tungsten rods, plates, heat insulation screens and other parts which are used in hot zone of sapphire grower according to customer's drawing and specific requirements.
Due to the manufacturing advantages of tungsten rods, tungsten sheets, tungsten machining parts and tungsten processing equipment, Sunstoneestablished a Division of hot zone of sapphire crystal growing since 2008. Until now Sunstone provided a large number of hot zone parts like crucibles, sheet and rods to Russia, Ukraine, USA, Japan, Korea, Thailand, Singapore Taiwan and Hong Kong. So now we have been gradually formed the capacity of 30 sets hot zone in 35Kg, 65Kg, 85Kg and 120Kg.
Sunstone has a sound quality management system of ISO9001 and ISO14001 and get the certification.
Sunstone has a excellent testing equipment of physical properties like density, hardness, surface roughness, grain size, tensile strength and other parameters, even ultrasonic NDT.
The distinguishing characteristic of Sunstonestungsten crucible is high density, high purity and high precision machining. As the whole set of hot zone parts is completed in Sunstone, so the quality between the components is to get a good guarantee. with its excellent quality and reasonable price has been widely recognized by the industry of sapphire crystal growing and hot zone furnace at home and abroad, Sunstonehas been designated the sole supplier and leader in domestic and foreign industry.
Because of their excellent corrosion resistance again sapphire melt and their high temperature creep resistance, tungsten crucibles are used for sapphire crystal growing in all common processes.
The sizes of tungsten crucibles:
Material Density Size
Tungsten (99.95%) ≥ 18.3G/CC (sintered) Wall thickness: 0.02mm-50mm
Diameter: 70-800mm
Height: 50-700mm
Molybdenum (99.95%) ≥ 9.8g/CC (sintered) Wall thickness: 0.02mm-50mm
Diameter: 70-550mm
Height: 50-700mm
NOTE: Under vacuum or reducing atmosphere, the maximum operating temperature of tungsten crucibles is 2450 C, but 1700 C for molybdenum crucible.
Speciation: External diameter: φ 4---φ 10mm
Wall thickness: 1.0---1.5mm
Length: ≤ 750mm
Applications: The thermocouple protecting tube to test the temperature. Making guns, rocket nozzles
Beijing Sunstone Tungsten Molybdenum Co., Ltd(hereinafter referred to as Sunstone) is a national high-tech company and located at Shilong Industry Development Zone in Mentougou District, Beijing. Sunstone specializes in the development and manufacture of products made from tungsten, molybdenum rhenium and its alloys. Sunstone have been a recognized leader in the tungsten, molybdenum rhenium deep processing industry.
Sunstone was built in 1995 and is the leading manufacture which takes part in the state 863 and 973 projects and have the Independent Right of Own-operation Export and Import. Sunstone has advanced technologies, superior machines & equipment, state-of-the-art testing instruments and modern workshops and also has passed ISO9001 and ISO14001 certification firstly in this field. Based on almost 20 years experience in research and production, Sunstone now has become a modern specialization company engaging in designing, development and production in tungsten, molybdenum, rhenium and its alloy. Those products cover most field of refractory metals and enjoy great fame in the homeland and overseas.
An integrated production system including powder metallurgy, press, sintering, melting, forging, rolling, draw, machining, heat treatment and fabricating enable us manufacture various products including ingot, billet, bar, rod, wire, plate, sheet, disc, crucible, tube, ion parts, fabricated parts as well as many down-stream products.
Our vision is:
- To be the world's largest independent manufacturer of tungsten molybdenum and rhenium suppliers;
- To be an international influential export trader on refractory metals and mineral resource
- To be an international solutions provider in tungsten, molybdenum and rhenium products and refractory metal
