CBN and PCBN cutting tools

CBN (cubic boron nitride) and PCBN (polycrystalline cubic boron nitride ) tool: In modern machining, the tool material is carbide and high speed steel with the most,

almost half and half. The invention and application of high-speed steel, has a century of history, carbide is already half a century. Next, let us look at the relevant

content of carbide cutting tools introduced. cbn (cubic boron nitride) tool cbn, diamond hardness came in after. second only to diamond cbn is an extremely hard tool

material, material hardness greater than 48hrc usually work best when (machining soft materials cbn wear out quickly). High temperature to 2000 ℃ when there is an

excellent red hardness. Although more brittle than cemented carbide and thermal and chemical stability and is less than the ceramic, but it has a higher than ceramic

cutting tools impact strength and crack resistance and low rigidity machine for cutting hard metal can. Furthermore, the proper custom cbn roughing tool can withstand

high-power cutting load, intermittent cutting blows and fine processing required heat and wear resistance. Appropriate for the specified customization processes

including machine and fixture rigidity, edge grinding large enough to prevent microscopic peeling, and the tool base body is a high content of grade cbn. cbn grade

high content of these specified processes are required, due to their high speed under heavy load conditions edge processing requirements, and high thermal resistance

and toughness for severe intermittent cutting. These properties make this material is used as a tool material grade roughing of hardened steel and pearlitic gray cast

iron. Drilling tools in an effort to meet the needs of production efficiency improvement, tool manufacturers are innovative various drilling tool design and

manufacturing strategies. In the automotive, medical equipment, aerospace, general engineering and other different manufacturing industries, manufacturers can choose a

variety of advanced drilling tools, including high drilling rate of solid carbide drills, indexable insert drills, can be Carbide tip drill bits for drilling, as well

as the increasing use of multi-purpose drill bits for drilling various holes, deep hole, and once completed drilling, chamfering, countersinking and other processed

without further secondary processing. Tool manufacturers take advantage of the tool geometry, substrate material and surface coating technical progress, has introduced

a new tool varieties, expansion of existing product lines and custom-designed special tools stereotyped as standard delivery products. cnc machine tools (especially

the processing center), Swiss-type turning centers as well as to optimize the performance of long-bit processing long bed lathes technological advances also make the

advantages of advanced drilling tool can be fully tapped. Modern machine tools and high rigidity under high pressure coolant delivery capability for a large number of

drilling is also crucial. In metal cutting, shortening the processing time is one of the main objectives pursued people for hole machining is no exception. In

addition, certain sectors of high precision holes, hole machining is applied also to the additional pressure. For example, medical and aerospace manufacturing hole

diameter jump for the accuracy and consistency of tool life demanding. Manufacturers also facing the workpiece machining of advanced materials (such as titanium,

inconel alloys, cobalt - chromium alloy, etc.) challenge. Due to its solid carbide drills have high rigidity and the other four are still playing performance design

features - carbide coating, drill geometry, blade width and back taper (usually to φ25mm), so it is a good selection process. The most effective design of a

multilayer coating structure pvd coating (top layer is bonded to prevent chips smoothing layer), it has excellent properties of resistance to chipping tough carbide

substrate combination, the drill bit can be more high feed rate for machining. Drill geometry needs according to each specific workpiece material (including difficult

materials) to design. Drill blade width of justice design can progress drill bit accuracy and drilling capabilities. Back taper size affects the machined hole and

drill the contact surface, it must be based on precise design of different materials, in order to avoid friction and shorten tool life.