Welcome To Our Website. Any questions about PCD cutting, brazing and grinding, Call Us:+86 17700605088

Analysis of the reasons for the blackening of the grinding wheel when grinding PCD tools with a vitrified diamond wheel

2021-12-17 17:02:43

1. The grinding wheel is blocked. After grinding a large number of workpieces, the grinding wheel turns black, indicating that the debris during grinding did not fall off in time and adhered to the surface of the grinding wheel. Therefore, the surface of the grinding wheel may be blocked by the grinding debris. At this time, it is necessary to use an oil stone or a dressing wheel to the diamond grinding wheel.

PCD insert grinding

2. The temperature of the grinding wheel is too high. During the grinding process, the coolant is used less, and the grinding heat increases. At this time, it is necessary to increase the amount of coolant to reduce the temperature of the grinding wheel and the workpiece.

3. The feed amount is too large. The grinding wheel feed rate is large, the cutting thickness of a single abrasive grain increases, and the heat generated increases, which increases the grinding temperature and also causes the grinding wheel to turn black. It is necessary to appropriately reduce the grinding wheel feed rate.

4. The hardness of the grinding wheel itself is too high. The grinding wheel is selected to be too hard, and the blunt abrasive grains are not easy to fall off. The workpiece material is PCD. The harder the workpiece material, the softer the hardness of the grinding wheel should be selected to make the blunt abrasive particles fall off quickly, so that the grinding wheel always keeps sharp abrasive particles at work to avoid workpiece burns and debris from blocking the grinding wheel.

 

 

---EDITOR: Cindy Chhen

---POST: Doris Hu



TAG:  vitrified diamond grinding wheel


  • Selection of grinding wheel for sharpening
    08 August 2022

    Selection of grinding wheel for sharpening

    The finer the grinding wheel particle size, the smaller the cutting edge chipping, and the lower the grinding efficiency. For this reason, the PCD cutting tool sharpening process can be divided into three processing stages: coarse, fine, and fine according to the accuracy of the cutting edge of the tool, its purpose (see Table 1) or its failure degree (see Table 2). Formulating a reasonable sharpening process according to specific conditions can greatly improve processing efficiency.

  • Why And How To dress Double Disc Grinding DDGWheel
    20 July 2022

    Why And How To dress Double Disc Grinding DDGWheel

    MORESUPERHARD can not only provide you with efficient double surface fine grinding solutions, but also provide you with dressing solutions matching your double side grinding machine !

  Add:  Zhongyuan Rd, Zhongyuan District, Zhengzhou, 450001, Henan, China

  Tel: +86 17700605088

  WhatsApp:+86 17700605088

  E-mail: pcd@moresuperhard.com