Chun Chun is grown year, 8 to 10 years benefit, be sure to choose when sowing fertile soil, adequate light, sunny leeward, deep soil, well-drained sunny ground Plow Shizujifei. Dwarf close adopt seeding seedlings, careful tending, among dense fill thin, erase the terminal bud when one meter height, trigger collateral, harvesting tender buds. During the winter, before the snow , the soil around the ground diameter is more than 30 cm, and the seedlings are kept warm and protected. In the spring, the soil is removed and the soil can be harvested normally. If the seedlings are planted, the large seedlings of the nursery field will be transplanted in autumn.
Net species live dwarf close spacing of 50 cm, 10 to 15 per square meter, per (acre) Control 0.8 10 000; low sets of broadcast of high density, broadband and narrowband mode adopted, internet 4 to 5 meters, the grain growing Vegetable crops, narrow band 1 m, live citron, according to the line spacing 50 cm, density of 10 ~ 15 cm; net seed transplant dwarf dense planting line spacing 50 cm, 30 cm hole spacing , 5 holes per hole , about 1600 per acre .
One of the most fascinating materials of our time is polycrystalline cubic boron nitride PCBN - the second hardest material after diamond. At CeramTec, PCBN is used as a cutting material from which indexable inserts are manufactured for machining.
PCBN is produced synthetically and is a "composite material" made of cubic boron nitride and a mostly ceramic binder phase. The ratio of cBN to binder content and the cBN grain size determine the application.
PCBN cutting materials are used in the machining of hard and/or highly abrasive workpiece materials. The high hardness and the extremely high hot hardness (up to temperatures above 1,000°C), the edge stability and inertness towards ferrous materials as well as the basically good chemical resistance give CBN cutting materials a high potential for use in machining. On the cutting material side, a distinction is made between high- and low-cBN cutting material grades.
PCBN (Polycrystalline Cubic Boron Nitride) blanks for cutting tools are composite ultrahard materials sintered by polycrystalline CBN and carbide alloy under ultra-high pressure and high temperature conditions. They combine the hardness, wear resistance, and thermal stability of CBN with the impact resistance and toughness of carbide alloy. PCBN blanks are highly suitable for cutting ferrous and non-ferrous metals with high hardness.
PCBN Composites and Inserts
Hans Super Abrasive Diamond Tool Co.,Ltd , https://www.hansuperabrasive.com