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Why is My Cutting Disc Turning Blue?
If you've noticed your cutting disc turning blue during operation, you're witnessing a clear sign of overheating. This discoloration isn't just cosmetic—it's a warning that your cutting process needs adjustment. In this comprehensive guide, we'll explain why cutting discs turn blue, what it means for performance and safety, and how to prevent it.
02
2026
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04
Rail Cut-Off Wheels: Essential Guide for Efficient Railroad Track Maintenance
This technical guide covers everything maintenance crews need to know about rail cut-off wheels: from 14-inch aluminum oxide discs for light rail to heavy-duty 16-inch zirconia wheels for thermite weld removal, including speed ratings, safety standards (EN 12413, OSHA), and machine compatibility.
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03
Can I Use the Same Disc for Steel and Aluminum?
You should NEVER use the same cutting disc for both steel and aluminum. This is one of the most common questions we receive at JKINGS, and the answer is clear: using the same disc for ferrous and non-ferrous metals causes serious problems that affect safety, performance, and work quality.
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How to Choose Cutting Disc for Aluminum
Aluminum presents unique cutting challenges that are the opposite of stainless steel—it's soft, ductile, and has a low melting point. The primary concern when cutting aluminum is preventing "loading"—when aluminum particles clog the abrasive surface, rendering the disc ineffective. At JKINGS, we manufacture specialized aluminum cutting discs designed to overcome these challenges. This guide will show you how to achieve clean, efficient cuts on aluminum and other non-ferrous metals.
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