U95-25 straight column cutting tooth high wear in resistance gold head coal mining machine excavator accessories

Description :

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The U95-25 straight column cutter is a key basic consumable in coal mining and tunnel excavation engineering. It is mainly used to be installed on the drum of coal mining machines, tunneling machines or rotary drilling machines, and to break coal seams, rock layers or concrete structures through high-frequency impact and shear action. This model of tooth cutter adopts a straight column structure design, which can effectively transmit torque and withstand huge axial loads, solving the engineering pain points of easy loosening of tooth seat and easy fracture of tooth body under hard rock working conditions. Its core working end is embedded with high-quality hard alloy heads, which have extremely high hardness and compressive strength, suitable for cutting operations on medium hard to hard rocks. It is an important component to ensure the efficiency of mechanized mining and reduce the frequency of downtime and replacement.

  The specification parameters of the U95-25 straight column cutting teeth strictly follow the industry standard for mining machinery parts, where "U95" represents a tooth shank diameter of 95 millimeters, compatible with standard U-shaped tooth seats, and "25" usually refers to the specific specifications or length series of the alloy head. High quality alloy structural steel such as 42CrMo or 35CrMnSi is often used as the base material for the tooth body. After overall quenching and tempering treatment, it ensures that the core has good toughness and fatigue resistance. The head alloy beans are fixed using brazing technology, with full and pore free welds and high bonding strength to prevent detachment during severe vibrations. Surface treatment usually adopts shot peening or nickel plating anti-corrosion technology to enhance the wear resistance and corrosion resistance of the tooth body, and adapt to the harsh working environment of wet and high dust underground.

  When selecting U95-25 straight column cutting teeth, it is important to check whether the existing equipment's tooth seat aperture is 95mm to ensure that the fit tolerance is within a reasonable range. Tightness can lead to installation difficulties, while looseness can cause the cutting teeth to rotate and wear the tooth seat. This model is suitable for working conditions with complex geological conditions and a rock Proctor coefficient f ≤ 10. For extremely hard rock formations or formations with high quartz content, it is recommended to evaluate whether higher grade alloys or special heat treatment processes are needed. Compared with conical cutters, straight column cutters have more uniform force distribution, but slightly weaker self sharpness. Therefore, it is necessary to regularly check the wear of the alloy head to avoid a decrease in cutting efficiency and an increase in equipment load caused by grinding. It is strictly prohibited to mix different brands or cutters with significant differences in wear on the same drum.

  The installation and maintenance of the U95-25 straight column cutting teeth directly affect the service life of the equipment. Before installation, it is necessary to clean the coal powder and rust inside the tooth seat, and apply an appropriate amount of lubricating grease for disassembly. In daily use, a regular inspection system should be established, focusing on checking whether the cutting teeth are missing, whether the alloy head is cracked or detached, and whether the tooth body is abnormally bent. Once the wear of the alloy head exceeds one-third of the original diameter or severe eccentric wear is found, it should be replaced in a timely manner to avoid exacerbating the wear of the gear seat and causing greater maintenance costs. When storing, it should be placed in a dry and ventilated place to avoid rain and rust. During transportation, it is necessary to prevent severe collisions from causing hidden cracks in the alloy head, ensuring that each cutting tooth maintains its geometric shape and mechanical properties intact before being put into use.

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