Mechanical Grinding Process of Diamond Grinding Wheel for PCD Tool

Features of pcd tools
Polycrystalline diamond (PCD) is a polycrystalline sintered microcrystalline diamond powder with a small amount of metal powder (such as Co) and sintered at high temperature (1400 ° C) and high pressure (6000M Pa). Compared with other tool materials, PCD has extremely high hardness and wear resistance, high thermal conductivity, low thermal expansion coefficient, small friction coefficient, fast cutting heat dissipation, low cutting temperature, small thermal deformation, and can reduce the surface roughness of processing. Features. However, because PCD has a strong affinity with iron group elements, it is not suitable for processing ferrous metals and their alloys.

The commercially available PCD composite sheet is prepared by sintering a PCD layer with a thickness of 0.5 to 0.7 mm on a cemented carbide substrate, so it has both the high hardness of PCD, high wear resistance and good cemented carbide Strength and toughness. PCD tools show excellent cutting performance in high-speed cutting of non-ferrous metals, their alloys, and non-metallic materials, and have been widely used in automotive, aviation, aerospace, building materials and other industrial fields. However, the high hardness and high wear resistance of PCD make it difficult to sharpen the tool, mainly reflected in the small material removal rate, the large grinding wheel loss, the low grinding efficiency, and the cutting edge are serrated. The sharpness of PCD tool has become one of the obstacles to its popularization and application. In order to break through this process bottleneck, scholars at home and abroad have conducted a lot of research and development work.

Grinding technology of diamond wheel for PCD cutter
Commonly used PCD tool sharpening processes include diamond wheel mechanical sharpening, discharge sharpening, electrolytic sharpening, etc. Among them, diamond wheel mechanical sharpening is the most mature in technology and is currently the most widely used. Although this method has lower sharpening efficiency and higher processing cost, it can obtain good cutting edge quality and complete and smooth front and rear cutting surfaces.

Diamond grinding wheel For PCD tool
High efficiency grinding wheels

评论

发表评论

此博客中的热门博文

The use of rubber hose

图片
  Rubber hose is a flexible pipe with a wide range of uses. It is made of rubber material and has good flexibility, elasticity and wear resistance. They can be used in various industrial, agricultural, civil and medical fields. According to different application scenarios, the use of rubber hoses can be divided into the following categories: Water delivery: Rubber hoses are often used to deliver water, such as irrigation, fire protection, household water, construction water, etc. Gas delivery: Rubber hoses can be used to deliver gas, such as gas, air, compressed air, etc. Oil delivery: rubber hose can be used to transport all kinds of oil, such as oil, lubricating oil, diesel oil, etc., widely used in petroleum, chemical and other industries. Chemical delivery: Rubber hoses can be used to transport various chemicals, such as acids, alkalis, solvents, etc. For different chemicals, it is necessary to choose a hose made of rubber material with corresponding corrosi...
阅读全文

What material does the car wheel have? Which one is good?

图片
  The   wheel rim   is an important part of the car, also known as the rim.Generally speaking, it is the part of the axle mounted in the center of the wheel. Automobile wheels are mainly divided into manufacturing processes, namely casting and forging.Generally speaking, the cast ring is aluminum, and the forged ring also has aluminum and titanium.However, in general, forged rings have high strength, cast rings are light in weight, automobile power loss is small, and the running speed is fast. Another different indicator of the wheel rim is the different hole distance and eccentricity distance.The hole distance is just the position of the screw.The eccentricity distance reflects the distance of therim from the surface of the screw to the centerline of therim.A very good wheel rim requires uniform density, round shape, and good performance. Car wheels can be updated, and some people will upgrade their wheels.For larger wheels, the outer diameter of the tire ...
阅读全文

How to choose diamond grinding cup wheel?

Diamond grinding cup wheel looks like a cup, people also call it diamond cup grinding wheel, diamond grinding disc or diamond cup wheel. It is used for grinding concrete, terrazzo, granite, marble and other natural stone. Diamond grinding cup wheel is made of  diamond segments  and iron cup base, the diamond segment could be welded on iron base or sintered with iron based completely. They are usually installed on handheld angle grinder and floor grinder machine. There are different types and diameter of diamond grinding cup wheels for various applications.  For very coarse, coating, paints, glue and similar surface. Coarse segmented or PCD diamond grinding cup wheel is suitable for it. They are fast grinding, long lifespan cost saving for you.  The coarse diamond segment could be Arrow shape, Double row, etc. For grinding concrete, diamond grinding cup wheel has a range of different hardness on bonds, they are very hard, hard, medium hard, soft and ...
阅读全文