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

Description :

  【 Tax inclusive shipping 】 Open a 13% special ticket    free shipping nationally

The 170-30 straight column cutter is a key rock breaking tool designed specifically for coal mining and tunnel excavation projects, mainly solving the problems of low cutting efficiency and fast loss in hard rock. This category belongs to mining consumables, and typical working conditions include fully mechanized mining face, semi coal rock roadway excavation, and shield machine operation. By combining high-frequency impact and rotary cutting, effective crushing of coal seams and gangue is achieved. The structural design of the 170-30 straight column cutting tooth focuses on force uniformity, ensuring a stable cutting angle under high load operation. It is suitable for the installation interface of most domestic and some imported coal mining machines and tunneling machines, and is the basic component to ensure continuous operation efficiency.

  The core specifications of 170-30 straight column cutters are reflected in their geometric dimensions and material craftsmanship. Model 170-30 usually refers to specific installation hole spacing, handle diameter, and total length parameters, which need to be strictly matched with the equipment tooth seat. The main body is made of high-quality alloy structural steel, which has undergone overall quenching and tempering treatment to achieve a hardness of HRC45-50, ensuring the toughness of the matrix. The wear-resistant layer on the head is made of hard alloy (YG11C or similar grade), which is bonded to the steel body through high-temperature brazing process. The weld strength needs to be able to resist hundreds of tons of shear force. The implementation standard refers to relevant coal industry standards such as MT/T238. Before leaving the factory, it needs to undergo non-destructive testing to ensure that there are no defects such as cracks or pores. The dimensional tolerance of the 170-30 straight column cutting teeth is controlled within the millimeter level to ensure interchangeability.

  When selecting 170-30 straight column cutters, it is important to carefully check the drawing parameters provided by the equipment manufacturer, especially the diameter of the handle and the position of the clamp groove. There may be slight differences in the "170-30" from different manufacturers. This model is suitable for medium hard to hard rock coal seams. If the working condition is extremely hard rock or contains a large amount of quartz sandstone, it is recommended to consult whether it is necessary to upgrade the alloy grade or use conical cutters. Not suitable for working conditions with soft coal and no gangue, the cost of use is too high at this time. Compared with U-shaped cutters, straight column 170-30 straight column cutters are more convenient to install and replace, but require higher resistance to torsion. When selecting, it is necessary to confirm whether the tooth seat has an anti rotation structure to avoid early detachment of the alloy head due to idling.

  Before installing the 170-30 straight column tooth cutter, it is necessary to clean the coal powder and rust inside the tooth seat, and apply lubricating grease for subsequent disassembly. Regularly check the water spray cooling system during use to prevent alloy head annealing or weld failure caused by high temperature. Common faults include alloy head cracking, steel body bending, or weld seam cracking. Once discovered, they should be replaced immediately to avoid damaging the tooth seat. In daily maintenance, it is recommended to record the consumption of each shift, and check the matching between the drum speed and traction speed when there is an abnormal increase. The correct use of 170-30 straight column cutters can significantly reduce the cost per ton of coal. When stopping for replacement, a dedicated gear extractor should be used, and it is strictly prohibited to directly strike the tail of the steel body to avoid damaging the internal structure.

AfterSalesService :