Products Description
Silicon carbide crucibles are generally made of carbon bonded silicon and graphite materials.
Silicon carbide crucibles are suitable for smelting and melting precious metals, base metals and other metals in an induction furnace.
They are used at a temperature reaching 1600 degree celsius.
The silicon carbide crucible offers a uniform and consistent temperature when melting and has a high strength and resistance to cracking.
The uniform temperature gives a high quality molten metal needed for casting long lasting and good quality metal products.
Silicon carbide crucibles have good thermal conductivity, high strength, low thermal expansion, oxidation resistance, resistance to thermal shocks, resistance to wetting, high hardness and wear resistance.
Due to the silicon carbide crucible properties, it is applicable in various industries such as, chemical, electron, semiconductor, metallurgy, etc.
Products Specification
|
Refractorines |
Apparent Porosity |
Bulk Density |
Crushing Strength |
|
≤1700℃ |
≤23% |
≥ 2.3 g/cm3 |
≥ 10.5Mpa |
|
Chemical composition |
|||
|
C % |
Sic % |
Al2O3% |
SiO2% |
|
35 |
45 |
10 |
10 |
Remarks: we can customize other sizes of crucible as our customers' requirements, please send the drawing of crucible to us.
Products Packaging
ANALYSIS OF COMMON PROBLEMS IN CRUCIBLE
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Description of problem
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Analysis of causes
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1. Transversal crack
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|
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1).Close to the bottom of the crucible
(possibly causing the bottom will fall off).
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1).It may be caused by a hard object impact, such as throwing the ingot into a crucible or using a hard object such as an iron bartohit the bottom. In addition thermal expansion can cause
such damage.
|
|
2).About half of the crucible.
|
2).The reason may be that the crucible is placed on the slag or on the unsuitable crucible base. When the crucible is taken out , if the position of the crucible clamp is too much up and the force is too hard so it will cause cracks on the crucible surface of the lower part of the.
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3).A transverse crack is found in the lower part of the spouted crucible series.
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3).The crucible was not instaled corecty . in the instalation of the new crucible, if he refractony soilis tighty squeezed under the crucible nozzle during the use of the crucible cooling shrinkage will make the force point concentrated in the crucible mouth, resulting in cracks.
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2. Longitudinal crack
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1).After the crucible was used for a long time, longitucinal cracks appeared in the crucible wall, and the crucible wall at the crack was thinner.
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1).When the crucible is about to reach or has reached its service life it can not bear too much extermal foce.
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2).Crucible for initial use (or near new)
cracked on the lower edge and penetrated
through the bottom of the crucible.
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2).put the cooled crucible into a hot heat at high temperature, or heat the bottom of the crucible too quicky when the crucible is in a cooling state. The damage will generally be acompanied
by the phenomenon of glaze peeling.
|
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3).Longitudinal crack extending from the
top edge of the crucible.
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3).The result of heating the crucible too quickly, especialy when the heating speed of the bottom and bottom edge of the crucible is much faster than that of the top. wedge operation at
the top edge of the crucible is also easy to cause this damage.
Unsuitable crucible camp or tapping on the upper edge can also cause stiffening and obvious damage to the top edge of the crucible.
|
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4).Longitudinal crack on the side of the
crucible (the crack does not extend to the
top or bottom of the crucible).
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4).Usually caused by internal pressure. For example, the cooled wedge casting material is placed transversely in the crucible and the damage is caused when the wedge casting material is heated and expanded.
|
FAQ
1.Can you make customized products?
Yes,we are a factory with 20 years of experience and can accept any customization.
2.How to get a quote?
Sending drawings(PDF/STEP/IGS/DWG.)to us, including quality, delivery date.materials,quality,quantity,surface treatment and other information.
3.What is the delivery date?
Generally,the sample lasts for 1-2weeks and the batch production lasts for 3-4weeks.
4.How do you control quality?
(1) Material Inspection-Check material surfaces and approximate dimensions.
(2) First inspetion of production- ensure critical dimensions in mass production.
(3) Sampling inspection-check the quality before delivery to the warehouse.
(4) Preshipment inspection -100% inspection by QC assistant before shipment.
5.After-sales service team
If you have any problems after receiving te product, you can provide feedback through voice call,video conference,email,etc.
Our team will provide you with the best solutions within a week.
Company Profile
Foshan Davinci Technology Co.Ltd is a production-oriented trading company specializing in the production and sales of silicon carbide graphite materials. Since its establishment, the company has been focusing on the production and research and development of high-quality graphite products to meet the demand for inorganic non-metallic materials in metallurgy, machinery, chemical industry, new energy, electronic semiconductors and other fields. We always adhere to the concept of integrity-based and innovation-driven, and work together to achieve win-win results. We continue to innovate and enterprising, and are determined to become the most trustworthy graphite solution provider and provide strong support for the development of our customers!
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