Shaanxi Peakrise Metal Co.,Ltd
| Payment Terms | T/T |
| Supply Ability | 2000kgs/month |
| Delivery Time | 15~20 work days |
| Packaging Details | plywood case |
| Name | Molybdenum Thermal Field For Sapphire Crystal Growth Furnace |
| Material | Molybdenum and Molybdenum Lanthanum Alloy |
| Size | As per customer's drawing |
| Use temperture | 1100~1800℃ |
| Crafte | Riveting |
| Features | Low thermal conductivity |
| Brand Name | PRM |
| Model Number | custom |
| Certification | ISO9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 2000kgs/month |
| Delivery Time | 15~20 work days | Packaging Details | plywood case |
| Name | Molybdenum Thermal Field For Sapphire Crystal Growth Furnace | Material | Molybdenum and Molybdenum Lanthanum Alloy |
| Size | As per customer's drawing | Use temperture | 1100~1800℃ |
| Crafte | Riveting | Features | Low thermal conductivity |
| Brand Name | PRM | Model Number | custom |
| Certification | ISO9001 | Place of Origin | China |
| High Light | Riveting Molybdenum Products ，custom Molybdenum Products ，Lanthanum Molybdenum Heater | ||
Furnace For Sapphire Crystal Growth With A Molybdenum Thermal Field
1. An explanation of the molybdenum thermal field used in the furnace to grow sapphire crystals:
Parts of vacuum furnaces can also be insulated using graphite and molybdenum metal. The heat shield in an all-metal thermal field is made up of several layers of metal plates, with a specific amount of space between each layer.
In a standard vacuum furnace with a working temperature of 1315°C, the heat shield is usually composed of two layers of molybdenum sheets on the inside and three layers of stainless steel sheets on the outside.The quantity of molybdenum sheets and the thickness of each layer must be increased if greater operating temperatures are necessary. Molybdenum sheet can be substituted with tantalum sheet if the operating temperature is higher than 1650 °C. The number of layers and the distance between the metal sheets determine the thermal insulation performance for an all-metal thermal field. These distances are utilized to stop heat from conducting and radiating outside the thermal field's core. The thermal radiation released from the thermal field's center is reflected back to the workpiece there as a result of the molybdenum sheet's reflecting qualities. In locations where there is a need for extreme cleanliness and vacuum, all-metal thermal fields are frequently used. It should be noted that for the all-metal thermal field, embrittlement of the molybdenum metal will occur at 1150°C due to the metal's recrystallization, and the embrittled metal heat shield is easily damaged by the fixture or workpiece that falls on the screen. The cost of all-metal thermal fields is frequently more expensive than those built of other materials due to the high cost of molybdenum metal.
2. Molybdenum Thermal Field For Sapphire Crystal Growth Furnace Measurements and Tolerances:
Unit:mm
| produced with a single sheet of molybdenum | produced by a sheet of several molybdenum | ||
| thickness | Max cylinder diameter | Max cylinder height | |
| 2.0±0.1 | 450±2 | 660±1 | |
| 1.0±0.08 | 610±2 | 660±1 | Manufacture according to customers’ |
| 0.5±0.04 | 700±2 | 660±1 | requirements |
| 0.3±0.03 | 700±2 | 660±1 | |
According to the needs of the customer, special sizes can be produced.
3. The Molybdenum Thermal Field For Sapphire Crystal Growth Furnace's manufacturing procedure and apparatus:
| Item | Process | Equipment | Quality check point |
| 1 | Mo sheet | 1 Physical and chemical properties 2 Measurements (length ,width) | |
| 2 | Check | 3 Surface quality | |
| 3 | Wound roll | Rotary machine | 1 Surface clearness |
| 4 | Check | 2 Diameter and height of cylinder | |
| 5 | Drilling, rivet | Drill press | 1 Rivet secure |
| 6 | Clean | Riveting machine | 2 Location of assembling hole |
| 7 | Check | ||
| 8 | Assembly | Assembly platform | 1 Surface clearness |
| 9 | Clean | 2 The diameter and height of cylinder conforming to the | |
| 10 | Check | requirements | |
| 11 | Package | 3 Solid assembly, and no splice among layers 4 Show certificate of quality |
4. Utilization of a Molybdenum Thermal Field in a Furnace for Growing Sapphire Crystals:
The most important role of the molybdenum reflection shield is to prevent and reflect the heat in the sapphire growing furnace as one of the heat-shielding components. Enhancing the crystal-pulling requires heat-shield components with high density, precise measurement, smooth surface, easy assembly, and acceptable design.
Vacuum furnaces, etc., can also use molybdenum thermal fields to heat insulation and reflect heat.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2010
Total Annual:
1000000-5000000
Employee Number:
20~50
Ecer Certification：
Site Member
Shaanxi Peakrise Metal Co., Ltd. is an rich experienced tungsten,molybdenum, tantalum, niobium, titanium,zirconium,nickel non-ferrous metal production enterprise,main products include tungsten-copper alloy, molybdenum-copper alloy, tungsten-molybdenum alloy, high specific gravity tungsten alloy, tan... Shaanxi Peakrise Metal Co., Ltd. is an rich experienced tungsten,molybdenum, tantalum, niobium, titanium,zirconium,nickel non-ferrous metal production enterprise,main products include tungsten-copper alloy, molybdenum-copper alloy, tungsten-molybdenum alloy, high specific gravity tungsten alloy, tan...
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