Circular saw

　　Circular saw

　　2. Applicable places for fire fighting, earthquake, armed police, public security, civil defense and other emergency operations.

　　Three, cutting material steel pipe, steel bar, iron pipe, doors and windows, concrete

　　Four, product introduction

　　Use air compressor or high-pressure air bottle to drive the air motor to run at high speed to realize fast cutting

　　5. Main technical indicators

　　Power source: compressed air

　　Required air flow: 900L/min

　　Required air pressure: 7 kg

　　Power: 4.352 horsepower

　　Saw blade diameter: 350 mm

　　Maximum cutting depth: 125 mm

　　Weight (without saw blade): 9.8 kg

　　1. The circular saw blade is not installed correctly. After the saw teeth become blunt due to a large force, the wood will be thrown and injured during sawing.

　　2. The circular saw blade has defects such as cracks, bumps, and skew. The broken saw blade makes the circular saw blade hit during work, causing the wood to throw or the circular saw itself breaks and hurts people.

　　3. Safety protection defects, such as transmission belt protection defects, damaged hand guard safety devices, non-protected zero connection, leakage protection or failure of its devices, etc., causing safety accidents.

　　1. When the circular saw enters the construction site, it must pass acceptance, install three-level power distribution and two-level protection, and have a good electrical switch (one-way button switch must be used). The fuse specification meets the requirements. It can be used after confirming that it meets the requirements. The equipment should be connected On the qualified card.

　　2. A safety baffle and a drip device must be installed above the saw blade, and an arc wedge knife must be installed behind the saw blade at 10-15mm away from the teeth. The installation of the saw blade should be kept concentric with the shaft. There should be a protective cover at the belt drive.

　　3. The saw blade must be flat, the saw cut must be appropriate, and the saw blade must be matched and tightened with the driving shaft. The saw blade must have sharp teeth, no two consecutive missing teeth, the length of the crack shall not exceed 20mm, and the end of the crack shall punch the crack hole.

　　4. Before operation, check whether the machine is in good condition, whether the saw blade is broken, and install the protective cover, and then it can be put into use after normal operation.

　　5. The operator should wear safety glasses; the operator should not stand on the surface of the saw blade rotating centrifugal force, and the hand should not straddle the saw blade.

　　6. When the wood saw is close to the end, the saw should be fed by the lower hand, and the upper hand should not directly feed the material by hand, and use the wooden board to push. When sawing, it is not allowed to move or raise the wood from side to side; do not use excessive force when feeding the material, and slow down the sawing speed in case of a knot to prevent the knot from popping out and hurting people.

　　7. When sawing short materials, push sticks should be used, not directly pushing by hand, feeding speed should not be too fast, and planing hooks must be used to receive materials. When cutting short materials, the length of the material shall not be less than 1.5 times the diameter of the saw blade, and the height of the material shall not be greater than 1/3 of the diameter of the saw blade. When cutting materials, the section height must not be greater than 1/3 of the diameter of the saw blade.

　　8. Misalignment of the saw line should be corrected gradually, and the board is not allowed to be sharp. When the saw blade runs for too long and the temperature is too high, it should be cooled by water, and the saw blade with a diameter of 60 cm or more should be sprayed with water during operation.

　　9. If the wood gets stuck in the saw blade, the post-processing should be stopped immediately.

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