U95-30 straight column cutting tooth high wear-resistant alloy layer coal mining machine excavator accessories

Description :

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  The U95-30 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 is mainly used for coal mining, tunnel excavation, and rock fragmentation conditions, breaking rock layers through high-frequency impact and rotary cutting. Its structure consists of a tooth body, a hard alloy head, and a wear-resistant layer. The straight column design ensures stress stability under complex geological conditions, effectively solving the problem of traditional tooth breakage and detachment. It is suitable for continuous operation in medium hard to hard rock layers and is a key vulnerable component to ensure mining efficiency.

  The U95-30 straight column cutting teeth are made of high-quality alloy steel as the base material, and undergo precision forging and heat treatment processes to ensure that the tooth body has high toughness and strength. The head is embedded with YG11C or similar grade hard alloy, which is firmly bonded to the tooth body through high-temperature brazing technology, and the weld seam is full and free of pores. The surface welding has a dedicated wear-resistant layer, which significantly improves the wear resistance of the tooth body. The product complies with industry standards such as MT/T246 for mining machinery, with strict control of dimensional tolerances to ensure precise fit with the tooth seat. The typical hardness reaches HRC45-50, and the alloy head hardness is not lower than HRA88, capable of withstanding impact loads of up to 300kN or more.

  When selecting U95-30 straight column cutters, it is important to consider the Proctor's coefficient (f value) and abrasiveness of the rock. This model is suitable for medium hard coal seams and semi coal rock tunnels with f ≤ 8. If used for full rock tunnels or f>; A hard rock layer of 10, it is recommended to consult the manufacturer whether they need to customize reinforced alloy heads. Compared with conical cutters, straight column cutters are easier to install and faster to replace, but attention should be paid to the fit clearance of the tooth seat hole. If the clearance is too large, it will cause the cutter to rotate flexibly and accelerate eccentric wear. When purchasing, the total length, handle diameter, and protruding length of the alloy head should be checked to ensure that they match the existing equipment tooth seat and avoid installation difficulties or detachment during use due to non-compliance with specifications.

  The installation of the U95-30 straight column tooth cutter requires the use of a specialized hydraulic wrench or tapping tool to ensure complete insertion into the tooth seat and secure the elastic retaining ring. In daily maintenance, the wear of the cutting teeth should be regularly checked. When the alloy head is worn to the level of the tooth body or cracks appear, it must be replaced immediately, otherwise it will aggravate the wear of the tooth seat and increase maintenance costs. Common faults include alloy head detachment, tooth bending and fracture, often caused by overload impact or material defects. It is recommended to establish a regular inspection system, record the consumption of each shift, analyze the reasons for abnormal losses, optimize excavation parameters, extend the service life of cutting teeth, and reduce comprehensive mining costs.

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