how to judge concrete hardness



Judge the concrete hardness

Heavily reinforced concrete>reinforced concrete>concrete with hard aggregates>Normal concrete>Concrete with abrasive aggregates>green concrete>asphalt

Our company,quanzhou sang diamond tools co.,ltd,can make unique formula if you provide the information,help you choose suitable concrete saw blade ,core drill bit,etc.


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Why South Korean Companies are the Main Competitor Of China Diamond Saw Blades?

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Nowdays, the main competitor of Chinese diamond saw blade is located in the South Korea. Diamond s aw blade   and  diamond tools  were started from the earliest Europe and the United States, then to Japan, South Korea. Now the diamond saw blades manufacturing center has moved to China, Chinese manufacturer produce the largest quantity of diamond saw blades in the world now. Since the Chinese diamond saw blade enter the international market, they have win the market quickly, because of the price and quality. The next step is face to the Korean competition, not just diamond saw blades, but also diamond segment,  diamond core drill bits   , etc. For the competition with South Korea company, beside the product cost-effective, the innovation is more important, the innovative engine has been developed in South Korea, including South Korea recently launched a number of new technologies such as the orientation of the new technology, Arix diamond segments. At th...
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Choose suitable diamond and CBN grinding wheel

Different grinding wheels should be used for different workpiece materials and different processing requirements. Even if grinding the same workpiece material, the grinding ratio of different brands of grinding wheels may differ by 2~5 times, so the appropriate grinding wheel should be selected. Performance interpretation Diamond grinding wheel is the best grinding tool for hard alloy, optical glass, ceramics, gemstones and non-metallic materials with high hardness and high brittleness such as stone. But because diamond is easily carbonized at 700℃~800℃, it is not suitable for grinding steel. CBN slightly inferior to the hardness of diamond, but its thermal stability (which can withstand temperatures up to 1300 ℃ ~ 1400 ℃), it is not like a diamond in the high temperature decomposition, namely, oxidation and graphitization, and the elements of iron group chemical inertness, high thermal conductivity (46 times that of corundum), made of the grinding wheel long life (up to several dozen...
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Why diamond core bit segment broken during coring

Sometimes in the world of concrete core drilling we face the frustration of loosing a core bit segment or two while drilling, more times than not it’s that urgent job that must be done NOW. So let’s take a look at WHY this might happen. This is written in regards to wet series  concrete  diamond core drill bits 1. Manufacturing Fault One possible cause could be that a  core bit  segmen t  might not have been brazed or laser welded on properly. If this is the case, the diamond core bit segment will more than likely come off within the first hole. Usually in the first 50mm depth of cut. To determine if this is the case, where the core bit segment is missing from the barrel, it will look and feel smooth. You will notice that the diamond drill segment is also rather smooth on the surface that was welded to the core barrel. This is most likely with brazed core bits. Don’t assume that just because a segment has come off drilling your first hole t...
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