Simple test method:
It refers to the method of judging product quality through simple test methods when purchasing agricultural machinery and spare parts products. According to the respective performance and characteristics of the agricultural machinery and spare parts products, there are some simple methods for on-site testing to judge the quality. The following methods are summarized:
1, weight comparison method: used to judge the cutting of farm machinery and spare parts products. Due to the reduction in the overall quality of some farm machinery and spare parts, the weight comparison method can be used to make judgments. The whole product can be judged by comparing the weights, and the spare parts can be weighed. When the weight is significantly lighter than the standard weight range, it is sure to be more severe. Such as 245 type rotary knife general weight is about 0.5 kg, if the weight is less than 0.45 kg, you can determine that the product is jerry-building products.
2, the amount of size, thickness method: used to judge the cutting of farm machinery and spare parts. There are standard requirements for the size or thickness of key parts of some agricultural machinery and spare parts, which can be judged with a ruler. If the distance from the feeding port to the incision of the green feed shredding machine is more than 550 mm, the standard measurement can be made immediately. For the agricultural machinery and parts that have dimensions and thickness requirements in the standard, measurements can be made in the field, and there is no specific requirement in the standard. Thickness requirements cannot be too thin.
3. Sound Judgment: Listening to sound is a way of summing up experience. Li Ru, throwing a rotary knife on the floor, heard the crisp sound of “when†shows that the quality is good, the sound “boring†indicates that the hardness of the knife is not good enough, and the sound of “bang†is heard to indicate that the knife body is cracked.
4. Destructive testing methods: Some agricultural machines and spare parts products can perform destructive experiments to test the quality. For example, booms, triangle belts, etc. can be twisted by hand to see if they will break or break. The two rotary knifes were knocked and the dents were struck, indicating that the knife had low hardness and poor quality. With boring boring parts of spare parts products, no heat treatment parts, pick up to stick knife, heat treated parts can only smash debris, and feel more difficult to boring, and some spare parts products boring several knives The back edge has a significant depression, which can be judged as having a very low hardness. The atomizer of the sprayer falls continuously at a height of 1.0 meter. It is a product with a quality that does not break and leaks.
It refers to the method of judging product quality through simple test methods when purchasing agricultural machinery and spare parts products. According to the respective performance and characteristics of the agricultural machinery and spare parts products, there are some simple methods for on-site testing to judge the quality. The following methods are summarized:
1, weight comparison method: used to judge the cutting of farm machinery and spare parts products. Due to the reduction in the overall quality of some farm machinery and spare parts, the weight comparison method can be used to make judgments. The whole product can be judged by comparing the weights, and the spare parts can be weighed. When the weight is significantly lighter than the standard weight range, it is sure to be more severe. Such as 245 type rotary knife general weight is about 0.5 kg, if the weight is less than 0.45 kg, you can determine that the product is jerry-building products.
2, the amount of size, thickness method: used to judge the cutting of farm machinery and spare parts. There are standard requirements for the size or thickness of key parts of some agricultural machinery and spare parts, which can be judged with a ruler. If the distance from the feeding port to the incision of the green feed shredding machine is more than 550 mm, the standard measurement can be made immediately. For the agricultural machinery and parts that have dimensions and thickness requirements in the standard, measurements can be made in the field, and there is no specific requirement in the standard. Thickness requirements cannot be too thin.
3. Sound Judgment: Listening to sound is a way of summing up experience. Li Ru, throwing a rotary knife on the floor, heard the crisp sound of “when†shows that the quality is good, the sound “boring†indicates that the hardness of the knife is not good enough, and the sound of “bang†is heard to indicate that the knife body is cracked.
4. Destructive testing methods: Some agricultural machines and spare parts products can perform destructive experiments to test the quality. For example, booms, triangle belts, etc. can be twisted by hand to see if they will break or break. The two rotary knifes were knocked and the dents were struck, indicating that the knife had low hardness and poor quality. With boring boring parts of spare parts products, no heat treatment parts, pick up to stick knife, heat treated parts can only smash debris, and feel more difficult to boring, and some spare parts products boring several knives The back edge has a significant depression, which can be judged as having a very low hardness. The atomizer of the sprayer falls continuously at a height of 1.0 meter. It is a product with a quality that does not break and leaks.
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