3 Main Criteria for Evaluating a Diamond Saw Blade's Performance
July 27th, 2010
There are 3 main criteria when evaluating the performance of a diamond saw blade: cutting efficiency, service life and processing quality.
There are 3 main criteria when evaluating the performance of a diamond saw blade: cutting efficiency, service life and processing quality.
Diamond grit indicates the size of the diamond. The diamond’s protrusion height on the cutting surface of the diamond saw blade influences how deep the diamond can cut, while deeper cutting means higher cutting efficiency. If the diamond is big, its exposed portion can be higher, so its cutting efficiency can also be higher. Therefore coarser diamond grit leads to higher cutting efficiency of the diamond saw blade.
The meaning of a diamond tool’s diamond concentration is the weight of the diamonds in a unit volume of the diamond tool’s working layer, and it is defined that when each cubic centimeter contains 0.88g diamonds, the concentration is 100%. This definition also applies to CBN abrasives.
Perhaps the most commonly sighted diamond circular saw blades are the sintered metal-bonded ones, on which diamonds are mixed and sintered with metal bond materials to form the blades’ cutting edges — diamond segments. Normally, these blades are made via 3 methods: wholly sintering, silver brazing and laser welding. The diamond blades made via these 3 methods are different and have their respective features and applications.
Earlier diamond segments of diamond circular blades were all designed to be even cuboids. Later, people found that, after a period of sawing, the two sides of the segments are easier to be worn than the middle, and the segments become a convex shape. The convex-shape diamond segments have a larger contact area with the material being cut, therefore the diamonds on them are easier to be ground blunt and then need dressing. In addition, as the sawing force will also increase, the core of the diamond blade tends to be distorted and be deformed for vibrations. This can influence the cutting precision, and reduce the blade core’s service life. Sandwich diamond segments, which have higher side layers and lower middle layers, however, can solve this problem to a great extent.
The shape of diamond segments is an important factor influencing the performance of diamond blades. The different shapes are directly related to cutting efficiency and the ratio of the diamonds’ non-normal failure.
There are two kind rims of diamond circular saw blades: continuous and segmented. Continuous rim diamond circular saw blades can cut smoothly with less material chips, while all the welded diamond circular blades and especially the ones whose diameter are bigger than 400 mm adopt the cores with segmented rim, on which diamond segments can be more easily welded.
When you are going to buy diamond saw blades, you should first identify what kind of blades you need. If the diamond blades’ quality is much higher than your needs, you will waste your money; if their quality is lower than your needs, you (or your customers) will not be able to complete your (or their) jobs; if there are no problems with the diamond blades’ quality, but the blades just do not match the objects to be cut, you also can’t do your jobs well.
1) What is a tile saw blade?
A tile saw blade is a kind of saw blade which can be mounted on a tile saw to cut tile, granite, marble and other stone products. In most cases, tile saw blades refer some types of diamond blades.
If you can manage to select diamond saw blades which are suitable to your work, you will improve your work efficiency and lower your costs, so it’s worthy for you to know some methods.