-
-
-
-
Honor
-
-
-
-
-
Contact
-
12
2019-12
MT/T392-2011 Drill Pipe for Coal Mine Tapered Thread Body Type and Basic Dimensions
2019-12-12
12
2019-12
Click to download: MT/T905-2002 coal mine bolt drilling rig with rotary drill pipe
2019-12-12
10
2019-12
The effect of diamond drill nozzle on the efficiency of the footage-beneficial mining technology.
A large amount of heat and cuttings are generated during high-speed drilling of rigid stone drill bits. In order to ensure the normal circulation of flushing fluid/mud fluid, nozzle and internal and external water grooves must be designed on the end face of drill bit matrix. The shape and quantity of the nozzle have a certain influence on the efficiency of the drill. The influence of nozzle shape on the efficiency of the current geological core drill has four kinds of nozzle shape, namely, straight nozzle, positive spiral nozzle, reverse spiral nozzle and bottom nozzle. The spiral nozzle is designed to solve the problem of poor circulation when the concentration of flushing fluid or mud fluid is very high. The positive and reverse circulation nozzles correspond to the drilling of the positive and reverse circulation drilling tools respectively.
2019-12-10
10
2019-12
Cause Analysis of Rigid Body Cracking of Diamond Bit
Diamond bit rigid body refers to the bit below the matrix, thread above the middle part, in the actual drilling project, there is a small part of the rigid body cracking, there are many reasons for this phenomenon, the most important including rigid body material, drilling operation and that caused by three reasons. Although the price of diamond bits is very low now, it is also a pity that the bits are scrapped for this reason. A brief analysis of the specific circumstances of these reasons. Rigid body material At present, the main materials of diamond drill bit rigid body in China are DZ50/DZ40/45# steel, of which DZ40 is the most commonly used, and its cost performance is
2019-12-10
10
2019-12
Maintenance and Maintenance Method of Diamond Composite Piece Bit
Diamond drill in the rig and other supporting drilling equipment with the completion of the drilling task, as the only cutting rock drilling accessories, it is a service life, so in each drilling should be timely after the end of its maintenance and maintenance, and this is also related to the service life of the drill bit. Electroplating layer maintenance and maintenance Proper and timely maintenance can also extend the life of electroplated drill bits and can greatly reduce drilling costs. Timely clean the head carcass of the electroplated drill bit, observe whether there is tire falling and rigid body cracking, and the degree of wear of the cross-section diamond. When the drill bit cannot complete drilling and core-carrying work, this is
2019-12-10
10
2019-12
Benefiting Mine | | Snow Stores Everything in East for Spring
Heavy snow is coming, the temperature is gradually showing a downward trend, Linqing winter has become more and more "decent". After beginning of winter and light snow, winter is quietly leaving her footprints. What is heavy snow is the 21st solar term in the 24 solar terms. Every year on December 7 or 8, when the sun reaches 255 degrees, it is "heavy snow", one of the 24 solar terms ". The ancients said: "the big one, shengyi, so far and shengyi". As the name implies, at this time, the snow often falls heavily and widely, hence the name heavy snow. At this time, the minimum temperature in most parts of our country has dropped to 0 ℃ or below. Heavy Snow and Benefiting Mine
2019-12-10
10
2019-12
On December 7, the launching ceremony of the third Liaocheng Vocational skills Competition and preparation for the 46th World skills Competition Shandong Province was solemnly held in Liaocheng technician College. The purpose of this competition is to fully demonstrate the skills of industrial workers in Liaocheng City and the achievements of talent team construction, vigorously promote the spirit of craftsmen, promote the large-scale vocational skills training of enterprises in the city, realize the great improvement of the vocational skills of the majority of industrial workers, accelerate the construction of high skilled talents in our city, and strongly promote the implementation of major projects for the transformation of new and old kinetic energy and the strategy of Rural Revitalization, To the 70th anniversary of new China. Beneficial Mining Technology
2019-12-10
02
2019-12
