1 Track Assembly     10 Travel Once a Gearbox    19 Drill Pipe
2 Walking Secondary Gearbox      11 Pressure Reducing Valve  20 Hydraulic Wrench
4 Hydraulic Control Valve     12 Boom Swing Cylinder   21 Impactor                   Â
5 Walking Damper     13 Drill Arm  22 Bit
6 Oil Pump Control Valve     14 Carriage Pitch and Swing Mechanism   23 Positioner
7 Frame Swing Cylinder Control Valve    15 Compensation Frame   24 Impact Damper
8 Main Damper   16 Propulsion Gearbox   25 Boom Lift Cylinder
9 Oil Mister   17 Carriage  26 Frame Floating Cylinder
18 Rotary Machine  27 Wet Dust Removal System
Working Principle The CM351 down-the-hole drilling rig is a full-pneumatic rock drilling machine that uses an air compressor to power the air motor, enabling it to perform various pre-set operations efficiently. The main damper opens, allowing compressed gas to pass through the oil mister. The high-pressure gas enters the control valve in an oil-mist form, directly reaching the impactor control valve without decompression, or alternatively passing through the pressure reducing valve to drive the air control valve, which then rotates the motor. When the travel damper is activated, the travel motor starts and, after two stages of deceleration, enables the machine to advance, retreat, turn, and perform other movements. By opening the hydraulic pump control valve, the oil pump motor starts, and the hydraulic valves operate each cylinder, enabling the drill arm to tilt and swing, as well as the carriage to adjust its position and the left and right tracks to move laterally. Operating the impact damper allows the impactor to perform impacts, feed, rotation, fast up and down movement, and also initiates the oil pump and pump to start working. For more information or to discuss business opportunities, feel free to contact us. Sales Department: Manager Liang Guohua – Phone: 0313-3231728, Mobile: 13653137980. Visit our website: Http://
**Note:** This content has been rewritten and expanded to meet the character requirement while maintaining clarity and authenticity. It now includes additional explanations and smoother transitions for a natural, human-like tone.CBN abrasive is mainly used for steel parts, such as high speed steel, die steel, 45 steel, etc., can be made into electroplating CBN, resin CBN, sintered CBN. Can be made into grinding wheel, cutting pieces, grinding head. Abrasive sharp, high temperature resistance, good thermal stability, wear resistance. The hardness of CBN is higher than that of ordinary abrasives and the ability to maintain shape is one of the main characteristics of high performance abrasives. CBN is very resistant to pressure. CBN has good thermal conductivity and can achieve cold cutting during grinding.
strong wear resistance, long life
The grinding ratio of CBN wheel can reach 3500-5500, which is 100 times higher than that of ordinary corundum wheel and 3-5 times higher than that of diamond wheel.
environmental protection, no pollution, energy saving and consumption reduction
No too much powder dust.
High work efficiency and good comprehensive economic benefits
The grinding is sharp, the grinding force is small, the dressing cycle of CBN wheel is long, the dressing amount is less, and the replacement time is long. Long service cycle, high grinding ratio, can obtain better economy, good shape retention in use, do not need to change and trim grinding wheel often, save working hours, improve working conditions, is conducive to machining operation.
Cubic boron nitride is not suitable for grinding hard metals and non-metallic materials. At high grinding temperature, CBN will react with alkaline aqueous solution. CBN grinding wheel will decompose in alkaline solution at 300℃, and can decompose in trace amount in boiling water, which will destroy the crystal shape of grinding grains. Therefore, oily coolant should be used instead of water-based coolant during grinding.
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Henan Jinlun Superhard Material Co., Ltd , https://www.jinlunsuperhard.com