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In garden tools, we generally refer to the chain saw accessories as crankshafts, saw chains, pistons, air filters, cylinders, crankcases, mufflers, high pressure packs, magnetic flywheels, etc. The saw chain of the chain saw is a closed chain with sawtooth riveted by the saw blade, the transmission chain piece, the connecting piece and the chain shaft. Since the saw chain works for a period of time, the tooth blade becomes dull, and the cutting efficiency is reduced.
Therefore, the saw chain should be filed frequently. The saw chain that meets the standard should be filed every 4 hours, and the saw chain of poor quality should be filed frequently. The quality of filing and grinding has a great influence on the service life of the saw chain, the normal use of the chainsaw and the productivity of sawing wood.
When filing and grinding, the standard of the angle is difficult to grasp. Generally, it can be measured according to the triangle ruler. It is better if there is an angle gauge. Usually experienced chainsaw workers master the appropriate angle according to the size of the sawtooth climbing edge.
The tooth height of the saw teeth is related to the service life of the saw chain, so don't file hard when filing the chain, just file a thin layer of metal, especially the rear edge, don't file often, and don't file hard, otherwise it will cause Teeth height and scrap are rapidly reduced, and chainsaw chains are quickly scrapped. In order to make the tooth height, material width and climbing edge of the saw chain all filed evenly, you must first try the filed saw chain.
The filing of chainsaw chains can be done by hand with a file, or with a filing saw machine. In order to reduce the consumption of manpower and improve the efficiency and quality of filing and grinding saw chains, it is very necessary to widely promote the use of filing and sawing machines. Commonly used manual files mainly include plate file, knife file and round file. Plate file and knife file are commonly used files for filing straight-tooth saw chains. It is best to use a round file to dig, and a triangular file is not commonly used. When filing, hold the file firmly, hold your wrist hard, and look at the tip of the saw.
Before filing and sawing, first place the file on the sawtooth, and push it up obliquely from the bottom of the tooth bin. Do not lift the file backward to avoid damage to the file. The slope of the file should be the same, and the surface of the file should be changed at any time to avoid overheating. damage the file
Usually, in order to ensure the filing quality of the chain saw chain, some chain saws are provided with various special tools for users when they are released, such as the "chain inspection gauge" attached to the Kerepu chain saw, which can be used to inspect the limited teeth and The height difference of the horizontal blade and the angle elements of the sawtooth can also be used to clean the saw blade groove and lubricating oil hole by using the tip of the difficult chain gauge.
In addition to filing the chain well, check the chain tension frequently, as new chains need to be adjusted more frequently than chains that have been in service for a longer period of time. Generally, in the cold state, the saw chain meshes on the underside of the guide plate but can still be pulled along the guide plate by hand, indicating that the tension is correct.
After reaching the working temperature, the saw chain expands and begins to relax, and the drive chain link on the lower side of the guide plate is not allowed to come out of the guide groove, otherwise the saw chain will fall off. If necessary, adjust the saw chain again. When the temperature is lowered, the saw chain will shrink, and the saw chain should be loosened at this time, otherwise the crankshaft and bearings will be damaged. The saw chain is an important accessory of the garden machinery chain saw. It is very important to take the maintenance of the saw chain seriously for the overall performance of the chain saw.
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