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29
2018-10
Different usage of different drill bits
Drill bits are often seen in our lives and work, but all kinds of drill bits, will we distinguish their usage? Drill bits are classified according to cutting principles and can be divided into cutting drills, impact crushing and shearing drills, and grinding drills. According to the function classification, it can be divided into comprehensive drilling bit, ring drilling bit and special bit. Different drill bits, their range of use is also different. For example, drag bits are used for soft and plastic rocks with large torque, bad drilling tools and no moving parts. Cone bit is widely used in soft and hard formations, with small torque and cone rotation. Diamond drill bits for hard, highly abrasive formations, no activity
2018-10-29
29
2018-10
Structure of Triangular Drill Rod
The structure of the triangular drill rod The triangular drill rod assembly is composed of triangular drill rod, guide frame, lifter and other components (some triangular drill rod assemblies also include casing). According to the pressure method and structural characteristics of the triangular drill pipe, the triangular drill pipe can be divided into the following types: 1. Friction type triangular drill pipe Each section of triangular drill pipe is composed of seamless steel pipe and the driving key welded on it. There are two types of external drive keys, three-key and six-key, and there is no pressure lock at the center of the external drive key. The downward pressure is the downward friction force between the gravity of each section of the triangular drill pipe and the table-in-table key during drilling. 2. Machine lock type triangular drill pipe Each section of triangular drill pipe is made of seamless steel pipe
2018-10-29
27
2018-10
What are the maintenance and maintenance of hydraulic tunnel drilling rig for coal mine?
Maintenance and maintenance methods of hydraulic tunnel drilling rig for coal mine: 1. Hydraulic oil with specified label should be used, and the filter screen of air filter must be used to add hydraulic oil. 2. Always observe the fuel tank level and oil quality during use. If it is insufficient, add oil in time. If the oil is unqualified, drain the oil and clean the fuel tank. Then add clean special oil through the air filter screen. Clean the hydraulic system completely. 3, often check and clean the jack and the screw rod, and coated with butter, the surface of the fuselage guide should be often added with lubricating oil. 4. Always flush the gap between the chuck and the gripper slips with high-pressure water to remove rock powder. 5. Inspection
2018-10-27
26
2018-10
How to solve the failure in the construction of rotary drilling rig
Rotary drilling rig is an indispensable construction equipment for building engineering into a hole, which can be used for sand, clay, silty soil and other soil construction, and is widely used in continuous, foundation reinforcement and multiple foundation construction. However, any product will be abnormal in use. Today, Xiao Bian is talking about the failure of machinery in construction. Common faults in the construction of rotary drilling rig: 1. During the perfusion process, if it is found that the mud level in the borehole casing suddenly rises and overflows the casing, then drops suddenly and bubbles appear, it should be suspected that it is a sign of hole collapse and can be detected by a sounding hammer. If the sounding hammer was originally suspended on the concrete surface and has not been taken out, it is buried and cannot be lifted up, or the sounding hammer is used for sounding
2018-10-26
25
2018-10
Classification and Comparison of Advantages and Disadvantages of Double-tube Diamond Bits
Although the diamond bit in the drilling industry is the most widely used, but the double tube diamond bit also plays an important role, especially in deep hole and super deep hole drilling, the application of the double tube bit is much higher than the single tube. In the actual drilling operation, the double-tube drill bit often uses the double-tube drilling tool, and its main advantage is that it does not need to frequently carry out the drilling and pouring out the core, and the core can be quickly lifted out of the hole by the lifting mechanism of the drilling tool, and the process does not affect the normal drilling. The above introduces the classification and comparison of advantages and disadvantages of single-tube diamond drill bits. In this article, the gold drill bit factory will mainly introduce the classification and advantages and disadvantages of double-tube drill bits. 1. double-tube diamond
2018-10-25
25
2018-10
Continue to explain the shortcomings of several aspects of the twist drill
First of all, the twist drill pipe is a professional drilling tool, so its application is also specific and has an irreplaceable role in a large area. However, it also has some defects of its own: it is known that the twist drill is mainly composed of the handle, neck and working part. Although the geometry of the twist drill is more reasonable than the flat drill, it still has the following shortcomings: 1. Compared with other types of cutting tools, the main cutting edge of the standard twist drill is very long, which is not conducive to chip separation and chip breaking. 2. The chisel blade is too long, and the rake angle of the chisel blade is a large negative value, reaching -54 ° ~-60 °, which will generate a large axial force. First twist drill
2018-10-25
23
2018-10
What is a tunnel drilling rig? What are the commonly used tunnel drilling rig models?
Tunnel drilling rig refers to the drilling rig used to drill in the underground roadway of the mine Secondary specialized school the geological survey drilling project. Tunnel drilling rig is mainly used for deep geological exploration, gas drainage, injection and drainage, ventilation, etc. The tunnel drilling rig has the characteristics of good disintegration, light weight of each component, and the drilling direction can be 0 ° ~ 360 °. The range is conveniently adjusted. According to the use of power, it can be divided into vertical shaft type (including spiral differential feed) and power head type (mechanical and full hydraulic). The driving mode can be pneumatic, hydraulic and electric. The main components of the drilling rig are power machine (group), gyrator, drilling tool pulling mechanism, drilling.
2018-10-23
22
2018-10
What are the preparations for the construction of the drill pipe of the rotary digging machine?
Rotary drilling machine drill pipe is a kind of equipment used more in many construction projects. It is fixed on the main winch drum through the wire rope, and the drill pipe can rise or fall accordingly when the drum is rolled or put on the wire rope. In order to ensure that the drill pipe of the rotary excavator works better and more safely, it is necessary to make relevant preparations before construction. The specific contents of the preparatory work are as follows: 1. The construction organization design must be pre-examined. Before the commencement of the project, the construction unit shall review the construction methods, main technical indicators and control measures to ensure that the work is correct. 2. must carefully good measurement positioning off. Measurement positioning is the key to the whole work, related to the hole position
2018-10-22
21
2018-10
Rotary digging machine drill pipe manufacturer-unique advantages of long spiral drill pipe
The long spiral drill pipe is a kind of drill pipe commonly used in the drilling process. According to the drill pipe manufacturer of the rotary digging machine, the long spiral drill pipe is not easy to be damaged, has good vertical straightness, is easy to disassemble, and has the advantages of installation. It has become the best drill bit in the current geology and plays a decisive role in the rotary digging. Next, follow the rotary drill pipe manufacturer to see what advantages long spiral drill pipe has. Unique advantages of long spiral drill pipe: 1. There are many models of walking long spiral drill pipe, such as 400mm,500mm,600mm,700mm,800mm and so on. 2. The long spiral drill pipe has reasonable structure, good material, thick blades and mutual interaction
2018-10-21
18
2018-10
Analysis of common types of drill bits and instructions for installation and disassembly
Generally speaking, there are many kinds of drill bits. The typical and widely used drill bits are roughly as follows: deep hole drill, reamer, countersink drill, center drill, hollow drill, twist drill and offset drill. The generation of drill bits plays a great role in related industries. One of the factors that make drill bits widely used is convenient installation and disassembly: 1. The installation of drill bits is slow to lift the drill box body, put the four legs of the drill box into the four holes of the drill rotary table correspondingly, select the corresponding drill box core plate according to the specifications of the drill bit, lift the drill box core plate and put it into the drill box body, then the drill groove to be installed corresponds to the convex tip of the drill box core plate, and put the drill bit
2018-10-18
