When the high-speed CBN grinding wheel is grinding the workpiece, we often find that there will be burns on the surface of the workpiece, which is related to the high-speed operation of the CBN grinding wheel. The main types of burns on the workpiece are linear or non-continuous linear; the grinding direction of the deformed grinding wheel shows two types of black spot-like burns.

The RS series manual universal grinding machine of Ewag have excellent performance in grinding superhard materials such as PCD tool edges for over 30 years. Ewag manual grinding machines are used to grind high-precision micro-tools made of carbide, steel or other materials. In addition, our machines can withstand the rational manufacturing and re-sharpening of polycrystalline diamond and carbide tools.

Sharpening is a process of sharpening the grains of a super hard grinding wheel. In this process, it is necessary to form a sharp cutting edge in addition to the binding agent between the grinding grains and the grinding grain of blunt grinding wheel, so that the grinding grains with strong grinding properties can be highlighted with the binding agent. Trimming must also remove tiny materials from the pores on the surface of the grinding wheel to prevent the increase of grinding force acting on the grinding wheel, which will cause vibration and burn on the surface of the parts.

The China International Machine Tool & Tools Exhibition(CIMES) will be held at the Beijing International Exhibition Center from September 7 to 11, 2020. CIMES is the largest international machine tool and tools exhibition since EMO in Germany and IMTS in Chicago, USA. It has been held in Beijing biennially since 1992, which has won great favor and support in both domestic and foreign manufacturing industry, equipment users and foreign trade circulation enterprises. After nearly 30  years’ development, CIMES has made huge progress concerning internationalization. Over 1,300 manufacturers from 32 countries and regions take part in every session, with on-site reports from over 200 domestic and overseas media.

Through grinding of centerless grinding machine is a grinding process in which the workpiece is pushed into the grinding zone from the front of the machine tool onto the supporting plate and guide plate, and then through the grinding zone from the back of the machine tool. It is mainly suitable for processing cylindrical and disc-shaped parts, and other parts such as short cones can be processed through special changes. In this processing process, improper selection and adjustment of grinding wheels, guide wheels, pallets, guide plates, feed and lead rollers, and cutting fluid will cause grinding defects, which will affect the processing accuracy.

When using diamond tools to process hard and brittle materials, due to the effect of severe friction and high temperature, the tools will inevitably wear away, which is a very complicated process.

Application : Cylindrical external grinding

Wheel sizes:1A1 Ø500-50T-30U-6X-400J-203,2

The HVOF coating materials in aviation parts has had a positive impact on the aerospace industry. HVOF coating materials are not only more environmentally friendly but also more resistant to wear and tear and therefore last longer. During the migration, there is also a shift in the grinding process used to produce the parts. While resin-bonded diamond wheels are an old standard, vitrified bonded diamond wheels are now more popular because resin-bonded diamond wheels cannot be dressed in machines. This poses a challenge to maintaining consistency. By using a vitrified bonded diamond grinding wheel, one can use a rotary dresser and a rotary dressing diamond wheel on the spindle to dress the grinding wheel. This breaks the situation that diamond grains can only be bonded in the grinding wheel, creating a completely new cutting surface on the grinding wheel. Bonding operations can be done online and during the manufacturing process

Calcined at 800 ~ 850℃, calcined with natural magnesite as raw material, magnesia is a kind of fine powdery gas rigid cementation material. The color is pure white, or gray, or near pale yellow, fresh material has a shimmering glassy sheen. Specific gravity 3.2, bulk density 800 ~ 900 kg/m3, magnesia content not less than 75%, coagulation time: initial coagulation no earlier than 40 minutes, final coagulation no later than 7 hours.

Grinding process and rolling process can improve the dimensional accuracy of parts and reduce the surface roughness.But there are the following differences.