What is a Sintered Knife?

Ceramic knives are mostly machined from a nano material called "zirconia". The zirconia + alumina powder was pressed into a mold blank with a weight of 300 tons, and then sintered at 2000 degrees Celsius. After grinding with diamond, it was equipped with a handle to make a finished ceramic knife.

ceramic knife

Ceramic knives are mostly made of a nano material "

1. Mixing ingredients: ball milling vibration milling ball milling adding glue ball milling;

2. Pressing the green body: The dry powder pressing process of ceramic blades has high requirements on powder morphology, powder surface charge status, and granulation of mixed powders, so the pressing process is difficult;

3. Debinding of the green body: The degumming process of the ceramic blade is similar to the production process of the carbide cutter;

4. GPS + HIP processing: The sintering process adopts atmospheric protection sintering (GPS) + hot isostatic pressing (HIP) processing technology;

5. Blade sharpening: The sharpening quality of ceramic blades has a great influence on the performance of the tool;

6. Installation handle: There are 3 major material handles, plastic handle (ABS), wooden handle and ceramic handle.

The most widely used are plastic handles, followed by wooden handles. Wooden handles are best used in high-end ceramic knives. Ceramic handles are easily broken.

7. Test knife: For ceramic blades produced in different batches and at different times, in addition to monitoring their performance indicators, a test knife should be performed before leaving the factory to check the cutting performance of the blade. The test knife is usually completed on the machine tool in the factory;

8. Packing inspection: check the product for damage, defective products, defective products, qualified products, and packaging.

Ceramic cutters use high-purity ultra-fine zirconia as raw materials, spray granulation, isostatic pressing, and precision machining

From the use in high-tech fields such as aerospace,

The emergence of a new type of ceramic tool is the result of a technological revolution in which mankind has used ceramic materials to reform mechanical cutting for the first time. As early as the beginning of the 20th century, Germany and the United Kingdom have begun to use ceramic tools to replace traditional carbon tool steel tools. Ceramic materials have become a new generation of tool materials due to their high hardness and high temperature resistance. However, ceramics are also limited due to their known brittleness. Therefore, how to overcome the brittleness of ceramic tool materials and improve its toughness, it has become a ceramic in the past century The main topic of tool research. The scope of application of ceramics is also expanding. The main reasons for the engineering and technical community to work hard to develop and promote ceramic tools are: (1) the production efficiency can be greatly improved; and (2) the global depletion of tungsten resources, the main component of high-speed steel and cemented carbide, is determined. It was estimated in the early 1980s that the proven tungsten resources in the world are only enough for 50 years. Tungsten is the most scarce resource in the world, but its consumption in cutting tool materials is very large, which has led to the rising price of tungsten ore, which has multiplied many times in decades. This has also promoted the development of ceramic tools and Popularization, the research and development of ceramic tool materials has achieved remarkable results. So far, the materials used as ceramic tools have formed alumina ceramics, alumina-metal ceramics, alumina-carbide ceramics, alumina-carbide cermets, and alumina

1. The blade itself is sharp and easy to cut your hands. Special care should be taken during storage, and children should not be touched to avoid misuse.

2. Ceramic knives should be used with cutting boards such as wood and bamboo. It is better to use with antibacterial cutting boards, but avoid using them on stone cutting boards. Do not expose them to high temperatures. Do not use high temperature disinfection cupboards (the handle is not resistant to high temperatures) );

3. Avoid heavy falls or impact from external forces;

1.Don't twist the knife during the cutting process;

2.Do not use ceramic kitchen knives to cut frozen (or incompletely thawed) food, raw rice cakes, boned meat, and hard objects such as fish and crab;

3. Don't wash the ceramic knife in the dishwasher, you can wash it in clean water or detergent and let it dry naturally;

4, please pay special attention to the blade part in use, the blade part is extremely sharp;

5. Please keep away from children and keep the kitchen knife out of reach of young children to avoid accidental injury;

6, please use wooden or plastic chopping board, avoid using on stone cutting boards;

7.Don't throw the knife in the air to break the knife;

8. Do not use a knife to chop, chop, knock, pry, drop, and hit, and do not use the knife as a lever;

9.Place the ceramic knife in the knife holder, knife holder or other stable environment;

10.Do not try to sharpen the knife yourself;

11. Do not place the kitchen knife too close to the fire source, so as not to deform the plastic knife handle;

12, the blade part is dirty, staining, etc. can be soaked with kitchen bleach. Do not wipe with a metal cleaning ball, etc. The blade may become black due to the action of metal powder.

The market for ceramic knives is mixed, and it is difficult to argue between true and false. Many consumers have been deceived and harmed. Then, it is important to know how to identify ceramic knives. Here are some tips for everyone:

First, look at the surface: The surface of the high-quality ceramic knife is smooth, its light can be learned, there are no flaws, the texture is fine, the hand feels comfortable, the toughness is high, and the blade is thick. Poor quality ceramic knife has many stains on the surface, including gray spots, cracks, pinholes, rough feel, and thin blades.

Second, look at the blade: The cutting line of high-quality ceramic knife is bright and fine, uniform. The cutting edge line of the ceramic knife of low quality is thick and wide, uneven and intermittent.

Third, look at the details: The real ceramic knife pays great attention to details. Its back, tip, and head have been carefully polished and rounded to effectively avoid hand injuries during use.

Fourth, look at the material: The material of the ceramic knife is zirconia powder. High-quality ceramic knives are made of zirconia powder with a relatively large particle diameter, so the blade edge will be obviously jagged. Moreover, high-quality ceramic knives have a relatively high purity of zirconia. The high-purity powder makes the blades look as transparent as jade, round and pure, while inferior ceramic knives have aluminum powder in the zirconia powder, and the blade has a light feel Dull and even black spots.

V. Touching the blade: Under the premise of ensuring safety, lightly tap the blade with your fingernails, high-quality ceramic knives will not crack, and poor ceramic knives will not withstand small pressures and crack.

6. Test sharpness: Cut the ceramic knife to the paper. A good ceramic knife not only cuts smoothly and easily, but also can cut the paper very fine, but a bad ceramic knife will have a noticeable blocking feeling and cut lines. More rough.

Seven, anti-fall: If you accidentally let the ceramic knife fall from the kitchen table, high-quality ceramic knife will not break or collapse, not so bad.

High-quality ceramic knives are scarce in raw materials, difficult to mine, complex in cutting tool processing technology, exquisite in grinding technology, and pass quality inspection. Because its production cost is relatively high, so the price is more expensive, but "a penny a penny", excellent value for money, trustworthy, so it has received the enthusiastic attention of consumers.