Views: 0 Author: Site Editor Publish Time: 2022-05-30 Origin: Site
With its high efficiency and high-quality performance, foundation drilling has been widely used in the fields of coal, petroleum, and geological exploration. Foundation drilling has demonstrated long life and high efficiency in drilling complete soft to medium-hard rock formations. So, what is foundation drilling welding preparation? Let's take a look at it next.
Here is the content list:
l Foundation drilling pre-weld treatment
l Foundation drilling welding process
l Foundation drilling post-weld treatment
The welding surface of the weld-on teeth for boring holes is pretreated to remove oil, rust, and oxide before welding, and then the surface is cleaned with alcohol. The weld-on teeth for boring holes are ground with a grinding wheel, and after grinding, the surface is cleaned with alcohol to increase its wettability.
(1) The welding of the central column and the welding of the central column composite sheet;
(2) Welding of peripheral gauge strips for foundation drilling;
(3) Welding of Flat teeth for foundation drilling. The most critical process is the welding of all Flat teeth for foundation drilling. The brazing temperature required to weld Flat teeth for foundation drilling into the socket and groove is 600-700°C, while the diamond on the composite sheet will be graphitized at 700°C, and the hardness and strength will decrease, so the brazing temperature must be controlled at 700°C. Through repeated practice, this problem has been solved.
The specific welding process is as follows: first, uniformly heat the treated sockets, add some powdered silver brazing flux in the sockets after heating to a certain temperature, and then put the pretreated composite sheets and silver solder sheets into the sockets, use a special tool to lightly press the heating, pay attention to control the heating temperature. After adjusting the position of the composite sheet, stop heating and apply pressure to the composite sheet to squeeze out the air and impurities in the gap. Then follow the same steps to weld the next tooth.
Due to the different materials of the Flat teeth for foundation drilling and the drill body, the corresponding shrinkage coefficients are also different, so it is easy to generate internal stress at the welding place during the cooling process, reducing the welding strength. For this reason, Flat teeth for foundation drilling are put into perlite for heat preservation and cooling treatment after welding, to reduce the internal stress of welding and improve the welding quality. After cooling, sandblasting is performed on Flat teeth for foundation drilling to remove surface weld scars.
RUIAN FLY MACHINE PARTS CO., LTD was established in 2006. After 15 years of development, FLY MACHINE has become a professional manufacturer mainly undertaking construction machinery parts that road Milling Bit, Trenching Bit, Forestry and mulcher teeth, Scarifier Blade Tools, Foundation Drilling bit, Mining and Tunneling bit, etc are our main products. The above is about foundation drilling welding preparation. If you are interested in Flat teeth for foundation drilling, weld-on teeth for boring holes, heavy drilling bits for foundation, you can contact us, our website is www.cuttingpicks.com.
