In the rapid development of economic construction in contemporary society, the laying and reconstruction of transportation roads, the survey and development of various mining, the construction and development of energy, the demolition and reconstruction of construction infrastructure, and the construction of rock taper buttons The extensive needs ...

The drill bit is a very common material. This material is used in many drilling operations. In many cases, different drill bits are selected according to the material of the drill hole. However, in actual applications, many drill bits are not particularly satisfactory. The main reason is that the quality of the drill is very bad. After a few ...

The threaded drill rod may encounter various failures when it is turned on.The most common thing is that it can't catch fire.Today, I summarized the relevant experience of the teachers of Su Rui Machinery Factory, and I will tell you what are the reasons why I can't catch fire. ?  1. Circuit reason: It is mainly manifested in that there is ...

1. Tapered Button Bits with furnace test block:Carburize and quench the test block with the charge; when the load is left on the frame, immediately break the test rod and check the depth of the crack penetration layer. Generally, the permeable layer can be determined by visual inspection of cracks. In addition, a 2-5% nitric acid alcohol ...

 Operation precautions.1. After the pilot hole is drilled, telephones should be installed at the upper and lower levels to facilitate timely contact during drill replacement and reaming.2. Steps for changing the drill bit:(1) Use special tools to remove the tri-cone bit and joint.(2) Use a special tool to transport the Drill pipe to the ...