Selecting the Right Diamond Grinding Disc for Stainless Steel Processing: Matrix Matching Principles and Case Studies

Understanding the Differences between Stainless Steel and Gray Cast Iron

When it comes to stainless steel grinding, you may often encounter problems such as burns, cracks, and rough surfaces. To understand how to solve these issues, let's first look at the fundamental differences between stainless steel and gray cast iron. Stainless steel has lower thermal conductivity compared to gray cast iron. While gray cast iron can quickly dissipate heat during the grinding process, stainless steel tends to retain heat, which can lead to heat concentration at the grinding point.

In terms of ductility, stainless steel is more ductile than gray cast iron. This means that during the grinding process, stainless steel is more likely to deform, causing the grinding force to be unevenly distributed. As a result, the heat generated during grinding is concentrated at the tip of the diamond particles, which can cause various problems.

The Phenomenon and Consequences of Heat Concentration

During the grinding process, heat is concentrated at the tip of the diamond particles. This high - heat concentration can lead to several negative consequences. For example, it can cause pitting, spalling, and blunting of the diamond particles. Pitting occurs when the high - heat causes small holes to form on the surface of the diamond particles. Spalling is when parts of the diamond particles break off, and blunting is when the cutting edge of the diamond particles becomes dull.

The consequences of these wear types are significant. Pitting can reduce the cutting efficiency of the diamond particles, spalling can lead to rapid tool wear, and blunting can cause surface roughness and increase the risk of burns and cracks on the stainless - steel surface.

The Logic of Matrix Matching for Different Wear Types

Now, let's talk about how to choose the right matrix for the diamond grinding disc according to different wear types. For pitting wear, a softer matrix is usually more suitable. A softer matrix can allow the diamond particles to be released in a timely manner when they are worn, ensuring continuous sharpness. For spalling wear, a matrix with better toughness is needed to prevent the diamond particles from breaking off prematurely. And for blunting wear, a matrix with appropriate hardness can help maintain the shape of the diamond particles and ensure efficient grinding.

Parameter Adjustment Case Studies

Let's look at some real - world case studies. One of our customers was using a diamond grinding disc with a diameter of 120mm for stainless - steel grinding. The original parameters were a rotational speed of 2000 rpm and a depth of cut of 0.2mm. Under these parameters, they often encountered problems such as surface burns and rapid tool wear. After adjusting the parameters to a rotational speed of 1500 rpm and a depth of cut of 0.1mm, the heat input was significantly reduced, the tool life was extended by about 30%, and the surface finish of the stainless steel was greatly improved.

Daily Maintenance and Tool Recommendations

Daily maintenance is also crucial for the diamond grinding disc. You can judge the state of the grinding disc by observing the shape of the grinding chips. If the grinding chips are long and thin, it may indicate that the grinding disc is in good condition. If the chips are short and thick, it may be a sign that the grinding disc needs to be adjusted or replaced.

To help you further optimize your grinding process, we recommend our practical tool, the Metal Grinding Parameter Comparison Table. This table provides detailed parameter references for different metals and grinding tools. Click here to download the table and take your stainless - steel grinding to the next level!