Causes for coating shedding of electroplated diamond tools

Electroplated diamond tools are widely used in various heavy-duty machining and precision processing applications due to their exceptional hardness, wear resistance, and durability. However, one common issue faced by many users is the peeling of the plating layer from the diamond tool surface. The following article will discuss the possible reasons for this problem.

1. Inadequate Cleaning and Preparation of Substrate Surface

One of the common reasons for plating layer peeling is the inadequate preparation of the substrate surface. Before the plating process, it is necessary to clean the surface of the substrate thoroughly to remove any oil, grease, or other contaminants that may prevent the plating from adhering properly. A careful and proper cleaning step is required to ensure that the substrate surface is completely clean and free of any dirt or dust particles.

2. Poor Adhesion of Plating Layer

Improper adhesion is another reason that can cause plating layer peeling. The plating layer needs to bond firmly on the substrate surface to prevent peeling. It is essential to prime the substrate surface or add a layer of nickel or copper, which helps in creating an excellent bond between the plating layer and substrate. Additionally, the concentration of the plating solution, immersion time, and operating temperature can also affect the adhesion of the plating layer.

3. Inappropriate Design of Tool

The design of the tool can also contribute to plating layer peeling. Sharp edges, deep grooves, and uneven surfaces can create weak spots on the surface and cause the plating layer to peel off during use. Properly designed tools with well-rounded corners and smooth surfaces can help prevent the peeling of the plating layer.

4. Improper Post-Treatment

Improper post-treatment can lead to plating layer peeling. After plating, it is necessary to bake the tool at a specific temperature to improve the adhesion of the plating layer. Additionally, proper cooling and cleaning steps are also necessary to prevent the plating layer from peeling away.

5. Inappropriate Use and Maintenance

Inappropriate use and maintenance of the electroplated diamond tools can also cause plating layer peeling. Using the tool beyond its rated capacity, harsh treatment, and exposure to extreme temperatures can weaken the bonding between the plating layer and substrate, leading to peeling. Proper care and maintenance procedures, such as proper storage, routine cleaning, and maintenance, can help prevent plating layer peeling.

In conclusion, plating layer peeling in electroplated diamond tools may result from several factors, such as inadequate substrate preparation, poor adhesion, inappropriate design, improper post-treatment, and inappropriate use and maintenance. Achieving a well-plated, durable tool requires careful adherence to each of the process steps, and using the right tool for the right job.