New special ceramic tool research trends (3)
1 pure silicon nitride ceramic cutter, its hardness HRA91～92, bending strength 700～900Mpa, fracture toughness 4.2～5.2MpaVm, heat resistance up to 1300～1400°C, its thermal expansion coefficient is 3.0×10-6/°C, Has good antioxidant properties. 2 silicon nitride composite ceramic cutter; it is a ceramic tool made by adding a composition of Al2O3, Y2O3, TiC, TiN and MgO to a silicon nitride matrix, and using a composite strengthening effect and cold pressing sintering, the performance of which is superior to that of hot pressing. Pure silicon nitride ceramic tool. For example, the addition of Al2O3 sintered ceramic tools to silicon nitride, combined with the characteristics of Al2O3 and SiN4, is higher than that of hard alloy tools and alumina ceramic tools, and the cutting edge temperature is higher than 1000 °C. Its biggest advantage is to increase the cutting speed, increase the feed rate, increase the metal removal rate and extend the tool life. Silicon nitride ceramic tools are particularly suitable for cutting various cast irons and superalloys, but they cannot process steels that produce long chips. Previous page
Sealand is a trustworthy manufacturer of CNG Mass Flow Meter, CNG Mass Flowmeter, CNG Flow Meter, CNG Flowmeter, CNG Coriolis Meter, ATEX, IECEx & CE approved.
With its high accuracy, wide rangeability and reliable performance, Sealand meter has been applied in many kinds of industries during the last 8 years. Unlike others who only focus on the measurement of liquid at normal pressure & temperature, Sealand has conquered the difficulty in the measurement under severe conditions, such as high pressure, high viscosity, high & low temperature. CNG Mass Flow Meter, CNG Mass Flowmeter, CNG Flow Meter, CNG Flowmeter, CNG Coriolis Meter Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeters.com
In short, with the deepening of the research and development of special ceramic materials in the world, the proportion of ceramic tools in the metal cutting and processing industry has been expanding. In recent years, due to the development requirements of the world aviation and aerospace industries, it is necessary to meet the requirements for improving the cutting efficiency of workpiece materials such as Ti alloys and Ni-based superalloys, so that new special ceramic tool materials will make greater contributions.
Take CNG (compressed natural gas) for example. As the saying goes, the meter can measure anything else if it can measure CNG. It is quite hard to measure gas under high pressure. The sensor must be able to bear high pressure; in this way, the thickness of flow tube must be increased, so the transmitter shall be more sensitive to detect the signal; however, Sealand made it. Sealand's first model is specially designed for CNG dispenser, and now thousands of this model are put into use on the market.