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3" ceramic Daishao knife-Black
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| Specifications |
3 inch |
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A ceramic knife is a knife made out of very hard ceramic, often zirconium oxide (ZrO2). These knifes are generally produced by co***cting Zirconia powder using high pressure presses which apply a pressure of around 300 tons to produce blade shaped blank. These blanks are very brittle and fragile which can be shattered by a slight blow and special binders are used to retain the shape of the blank till the firing process. Like all ceramics these are hardened by firing at around 1400 degree celsius for about 2 days in kilns. the result is a very tough and blunt blade which needs to be sharpened to get the desired cutting edge. The blades are sharpened by grinding the edges with a diamond dust coated grinding wheel.
Zirconia is very hard; it ranks 8.5 on the Mohs scale of mineral hardness, co***red to 6 to 6.5 for hardened steel, and 10 for diamond, giving a very hard edge that rarely needs sharpening. However, when sharpening is needed, they cannot be resharpened the same way as steel blades, which are often sharpened with a ceramic whetstone. To sharpen the edge of a blade a material harder than the one that is being sharpened is required, and ceramic knives are usually sharpened with industrial grade diamond sharpeners.
Ceramic knives will not rust, leading to their use by SCUBA divers. They are also nonconductive and nonmagnetic, which can be useful for bomb disposal operations. Their chemical inertness to both acids and alkalis and their ability to retain a cutting edge upto ten times longer than forged metal knives, makes them a very best culinary tool for slicing and cutting through boneless meat, vegetables and fruits. Since they are very tough they cannot be used for chopping, cutting bones or frozen foods or prying open things which may cause the cutting edge to chip off or the blade to break free from the handle. The tips of these knives are resistant to rolling and pitting but may break when dropped to ground,
Several brands also offer a black blade made by an extra firing or sintering via hot isostati |
| Company: |
Kingdouble Ceramic Knives Manufacturer.,Ltd
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| Contact: |
Mr. xie chunguang |
| Address: |
NO.1 Da Tang Bai Sha Road Yangjiang Guangdong China |
| Postcode: |
529500 |
| Tel: |
86-662-2203515 |
| Fax: |
86-662-2203525 |
| E-mail: |
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