The quality of the cutting teeth is crucial

source：http://www.xrocktools.com/ Release Time：2015-01-11 10:10:51

What customers are most concerned about is the quality of the cutting teeth! Due to the frequent occurrence of alloy detachment, fragmentation, and tooth body fracture in the cutting teeth produced by the vast majority of domestic manufacturers during coal mining, it greatly affects the progress of coal mining and also causes a significant waste of resources.

Here, let's first understand the purpose of the cutting teeth, which are the drill bits on the cutting face of the coal mining machine drum. Mainly used for coal mining and excavation of tunnels, tunnels, and ground trenches. Coal cutters are mainly equipped with coal mining machines, tunneling machines, milling machines and other equipment.

At present, coal mining machinery has become quite popular in mining, and the development trend of coal mining machines is to increase the power of the unit, expand the coal cutting working face of the coal mining machine drum, and improve productivity. Due to the constantly changing geological environment, sometimes in complex coal seam construction, the load coefficient of the cutting teeth increases, greatly reducing the reliability of the normal operation of the coal mining machine. From this, it can be seen that in today's trend of high-power and high-efficiency coal mining machinery, the quality requirements for the cutting teeth of coal mining machines are also increasing.

From the current situation, although there are many domestic manufacturers producing cutting teeth, the quality is uneven. The cutting teeth produced by some careless and irresponsible enterprises often fail to achieve the expected function during the work process. The technical personnel of Liaocheng Kerui Engineering Machinery Co., Ltd. believe that a reliable cutting tooth must first meet the following conditions

1. The cutting tooth body is made of high-quality 42CrMo, with machining accuracy between 0.01-0.02. After heat treatment, the hardness of the cutting surface of the cutting tooth is controlled between 45-48 degrees. (Except for some special geological conditions). The hardness of the tooth handle should be between 38-42 degrees.

2. The selection of hard alloys is particularly important, as some companies produce alloys with incorrect composition ratios for profit, often resulting in peeling, fragility, and other phenomena. Attention should also be paid to removing impurities and ensuring uniform welding of hard alloys. There should be no bubbles or copper liquid flowing out of the welding area.

3. Most of the cutting teeth in demand in the market now require welding wear-resistant layers. It can strengthen the alloy and protect the cutting surface of the cutting teeth. But it also requires high-quality carbon tungsten welding wire and professional and meticulous welding processes.

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