29
2020-12
What types of core barrels are there?
Generally, the instrument manufacturer does this. There is no specific height requirement, but the water-stable layer must be taken through. Generally, the thickness of the water-stable layer does not exceed 50cm, which is completely enough. No power supply is required, the drilling rig and sampling dimensions are accurate, the surface is smooth after drilling, and no accidental damage to the drilled material occurs. It adopts double-column structure and spiral feed mode, which has good stability, simple operation and labor-saving. Equipped with traveling wheels, it is easy to move. It adopts high-speed cutting technology and thin-walled diamond drill bits to drill and cut high-strength reinforced concrete. It has high drilling efficiency, accurate hole positions, smooth hole walls, good hole quality, and complete and smooth core samples. The vibration is small and there is no damage to the building.
29
2020-12
Refurbishment method of diamond grinding wheel
As the main part of grinding wheel grinding, the grinding wheel disc is very large in total loss during work. After the grinding wheel has been working for a period of time, its working surface will be passivated. If it is used continuously, the friction between the grinding wheel and the surface of the workpiece will be intensified, thereby affecting the surface quality of the workpiece. Therefore, you should choose an appropriate time to dress the grinding wheel in time. There are three forms of blunt grinding of grinding wheels, namely, blunt grinding of abrasive grains, distortion of the shape of the grinding wheel, and blockage of the grinding wheel. Dressing method of grinding wheel grinding disc 1. Diamond is a commonly used dressing tool. It has extremely high hardness and its sharp angle is 70°-80°. During dressing, the abrasive grains will break when they hit the hard tip of the diamond. As a new micro-tolerance, due to the small contact area between the diamond and the polishing sheet, the elastic deformation caused is also small, so that a finely trimmed surface can be obtained.
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Contact: Chen Qiguo
Phone:0511-88556097
Fax: 0511-88555599
Address: Baqiao Industrial Zone, Yangzhong City
Email:chenqiguo@china-chunjiang.com
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