The methodology of measurement and what is measured when calculating Ra and Rz are quite different. This is critical to understand if you will not be paid for your parts because the Ra you measured is not in fact the Rz surface profile that customer specified.

Super hard abrasive coatings are most commonly used on resin-bonded grinding wheels, while nickel and copper are the preferred coating materials. Coating thickness depends on coating material. Copper coating usually accounts for 50 % of the total weight of coated abrasive particles. Nickel coatings accounted for 30, 56 or 60 percent of the total weight of the coated grains. The 56 nickel coating has a stronger grain holding force (longer holding time), but it also generates more heat. Silver can also be used as a grainy coating for resin-bonded grinding wheels, which, despite its high cost, has the desired lubrication properties. The silver-coated super hard grinding wheel is mainly used to grind the spiral groove of the cemented carbide drill bit.

In recent years, everyone must be familiar with carbon fiber composite materials. Carbon fiber composite material is ubiquitous in all kinds of science fiction, racing movies. Such as the 350Z body in the Tokyo Drift “The Fast and the Furious Ⅲ”, the wings of the falcon in “Avengers”, the torso of the Baymax in “Big Hero 6” are all made of carbon fiber materials.

The dressing wheels are used for dressing diamond and CBN wheels. According to the different particle size, accuracy of the diamond and CBN grinding disc to choose the dressing wheel, making dressing easier and more time saving.

In addition to the standard, according to the American standard, the grit size ranges from 60 to 325, and the fine powder grade ranges from 400 to 14000. Please refer to the following table.

The camshaft on the automobile engine has multiple cams, and the rough grinding and fine grinding of the cam after quenching are the key processes that affect the quality of the cam. In general, imitative grinding is used, and the speed of the workpiece is limited, and the workpiece is prone to grinding burn cracks.

Grinding of guide parts often requires strict control of its profile and roughness. Whether in car pulleys or in complex bearings such as double guide ball bearings, the clearance accuracy and matching rate of the final product often directly affect the customer’s Production and user experience. However, it is clear in the industry that after the grinding wheel is manufactured, it is necessary to perform dressing to grind the workpiece to ensure the accuracy of the workpiece.

In the grinding process, under the action of friction and extrusion, the edges and corners of the grinding wheel gradually become blunt, or when grinding the ductile material, the grinding chips are easy to embedded in the pores of the grinding wheel surface, causing the surface of the grinding wheel to be blocked, and finally causing the grinding wheel to lose its cutting ability

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.