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How to check the material of agricultural vehicles
When purchasing agricultural vehicles, in addition to checking the appearance of the vehicle and the performance of the engine, it is also necessary to pay attention to checking whether the material of the agricultural vehicle is excellent, because it concerns whether the agricultural vehicle is sturdy and durable. (1) The frame of the frame, commonly known as the “girderâ€, is the base frame of the agricultural vehicle and bears all the weight of the agricultural vehicle itself and the cargo. The quality of the frame is crucial. For a good quality agricultural vehicle, its longitudinal beams, cross beams, and attached beams should all be integrated through structures. If the frame is pressed in a stacked manner, it does not meet the technical requirements and should not be purchased. (2) Cabin Board The agricultural truck's cabin board is divided into “cold board†and “hot boardâ€. The mechanical strength and corrosion resistance of cold-rolled steel plate are much higher than that of hot plate, and the price is also more than 1,000 yuan per ton. The surface of the hot plate is rough, and even if the paint is sprayed, it is not smooth enough and flat. (3) Chassis housing The transmission housing and the rear axle housing are preferably cast from high-quality steel. The surface should be smooth and free from sag, shrinkage holes and other defects. When you buy, you can use a small hammer to gently tap the surface of the shell. If you give a crisp sound, it means that the material is good; if the sound is hoarse, there may be minor defects such as cracks. (4) Tires The price of a farm vehicle tire accounts for about 20% of the vehicle price. The outer surface of the tire can not have cracks, lack of glue, scars, whitening and wrong flowers. Pay attention to what kind of material and structure of the tire cord (which is the skeleton of the tire) (all marked on the side of the tire). In general, nylon cords are better than cotton and rayon cords, and radial tires are superior to ordinary bias tires. (5) Painted agricultural vehicles should adopt advanced baking techniques, requiring lustrous paint, even paint, and hard film. You can choose a less important place on the car body for a few wipes. If the color and gloss of the paint do not change, it means that the paint is used; if the paint color turns white, it is an ordinary paint. You can also find a place to paint, nails, and check the hardness of the paint layer. If the lacquer layer is peeling and another color is revealed, it may be a refurbished backlog of agricultural vehicles.