170-30 straight column cutting teeth high wear-resistant alloy bean coal mining machine excavator accessories

Description :

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The 170-30 straight column cutter is a core cutting tool designed specifically for heavy-duty mining machinery such as coal mining machines and tunneling machines. This category mainly solves the problems of fragmentation and excavation in hard rock layers, semi coal rock layers, and complex geological conditions, and achieves efficient coal or rock breaking through high-strength impact and shear effects. The 170-30 straight column tooth adopts a straight column structure design, with uniform force distribution and high bending strength, especially suitable for medium to hard rock working conditions. Its core function is to protect the tooth body from excessive wear and ensure that the alloy blade can effectively cut into the rock mass. It is a key vulnerable component to ensure mining efficiency and stable operation of equipment, and is widely used in coal mines, tunnel engineering, and non coal mining fields.

  The manufacturing of 170-30 straight column cutting teeth strictly follows the standards of the mining tool industry. The main body is usually made of high-quality alloy structural steel (such as 42CrMo), which undergoes overall quenching or carburizing treatment to ensure that the tooth body has high toughness and hardness. The head is embedded with hard alloy balls or alloy sheets, commonly known as "alloy beans", and connected using high-frequency induction brazing technology. The weld seam is full without pores, and the bonding strength is extremely high. In typical specifications, "170" represents a total length of approximately 170mm for the cutting teeth, and "30" represents a shank diameter of approximately 30mm. The alloy head material is mostly YG11C or similar grades of tungsten carbide, with a hardness of HRA88 or higher, and has extremely strong wear resistance and impact resistance. Surface treatment often uses sandblasting or galvanizing anti rust processes to adapt to the humid and corrosive environment underground.

  When selecting 170-30 straight column cutters, it is necessary to focus on matching the size of the cutter seat of the coal mining machine or tunneling machine to ensure that the diameter of the tooth handle matches the gap between the seat hole appropriately. The gap is usually controlled between 0.5-1.5mm to prevent loosening, detachment, or installation difficulties. This model is suitable for rock layers with medium hardness and above. If the working condition is extremely hard rock layers, it is recommended to choose reinforced cutters with larger alloy heads or special coatings; If it is soft coal or soil layer, lower cost ordinary cutters can be used to reduce costs. Compared with ordinary conical cutters, straight column cutters have better stability during rotary cutting and are less prone to eccentric wear. However, it is important to check the elasticity of the tooth seat spring clamp to ensure reliable fixation. When purchasing, it is necessary to confirm the shape (spherical or sheet-like) of the alloy head and the quality of the welding process.

  The installation of the 170-30 straight column tooth cutter requires ensuring that the inside of the tooth seat is clean and free of debris, applying an appropriate amount of lubricating grease for replacement, and confirming that the retaining spring is fully inserted into the tooth handle ring groove. In daily maintenance, the wear of the cutting teeth should be regularly checked. When the wear of the alloy head exceeds one-third of the original size or the tooth body shows obvious bending or cracks, it must be replaced immediately to avoid damaging the cutting tooth seat or increasing the motor load. Common faults include alloy head detachment, tooth fracture, or abnormal wear, which are usually caused by geological mutations, spring failure, or material defects. It is recommended to establish a regular inspection system, record the consumption of cutting teeth per shift, analyze wear patterns, optimize the parameters of propulsion speed and traction force, thereby extending the service life of 170-30 straight column cutting teeth and reducing comprehensive mining costs.

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