How to detect whether the diamond segment is welded firmly?

Diamond segments are generally welded by several methods such as high-frequency induction welding, vacuum brazing, laser brazing, and cold-press sintering. Except for vacuum brazing, the other three methods are to weld the diamond segment on the blank blade.

So how to detect the firmness of the welding of the diamond segment? There are several ways to judge the welding firmness of diamond segment:
1. Visual inspection method: observe the appearance of the welding part. If the welding point is uniform and smooth, and there is no obvious defect in the welding area, it indicates that the welding firmness is high. The following aspects need to be paid attention to when using the visual method to observe the welding firmness of the diamond segment:

1) Observe the weld seam: the weld seam should be uniform without obvious cracks or bubbles. If there is, it means that the welding is uneven or there are welding quality problems.

2) Observe the welding part: there should be no cracks or inclusions. If there are, it means that the welding quality is not good.

3) Observe the diamond particles: the diamond particles after welding should be firmly fixed on the metal bond without loosening or falling off, otherwise it means that the welding firmness is insufficient.

4) Gently tap the diamond segment with your hand: you can roughly judge whether the welding is firm by listening to the sound. If the sound is crisp, the weld is solid; If the sound is dull or hollow, the weld is not strong.

It should be noted that the visual inspection method is only a simple method of judgment, and cannot guarantee the firmness of the welding 100%. If more accurate results are required, it is best to use professional testing equipment to test the welding quality.

2. Strength test: by applying force under fixed conditions, test the strength of the welding point to judge the firmness of the welding.

1) The diamond saw blade welding strength tester is generally tested by a universal testing machine. Specific steps are as follows:

2) Prepare the saw blade and test equipment to be tested.

3) To install the saw blade on the test equipment, it is generally necessary to use a clamp to clamp and fix the saw blade.

4) Adjust the parameters of the test equipment, such as loading speed, loading method, loading method, etc.

5) Start the test, the test equipment will apply force and record the breaking strength of the saw blade under specific conditions.

According to the test results, judge whether the welding strength of the saw blade is qualified.
3: Ultrasonic testing: use the ultrasonic detector to detect the sound wave reflection in the welding area, and judge whether the quality of the welding point meets the requirements.

4: Tensile test: fix the welding point on the tensile testing machine, apply force until the welding point breaks, and record the tensile force value at the time of breaking to judge the firmness of the welding.

In general, through the comprehensive application of various methods, the firmness of the diamond segment welding can be judged more accurately to ensure the quality and service life of the segment.