With the development of modern agriculture, agricultural machinery and equipment have played a vital role in agricultural production. In the parts of agricultural machinery, copper forging is an important material, and its impact characteristics and impact toughness evaluation become one of the key factors to consider in the design and use of agricultural machinery. In this paper, the impact characteristics and impact toughness evaluation methods of agricultural copper forgings are introduced in detail.
First of all, impact test is one of the important methods to evaluate the impact properties and impact toughness of materials. Common impact tests include impact bending test and impact tensile test. In the impact bending test, the impact load is applied to copper forgings, and the fracture morphology, fracture type and section characteristics of copper forgings under the impact load are observed. By analyzing the morphology and characteristics of the fracture surface, the impact resistance and toughness of copper forgings under impact load can be evaluated.
Secondly, the impact absorption energy is one of the important indexes to measure the impact toughness of materials. The impact toughness is usually expressed by measuring the fracture energy of the impact specimen under the impact load. For example, in impact bending tests, the impact toughness of copper forgings can be assessed by measuring the energy absorption curve during bending fracture. The greater the fracture energy, the better the impact toughness of copper forging.
In addition, the impact strength is also an important reference index to evaluate the impact characteristics of materials. Impact strength refers to the maximum stress or energy that a material can withstand under impact load. The impact strength of copper forgings can be estimated by measuring the impact bending stress or impact tensile stress of the impact specimen. In general, the higher the impact strength, the stronger the impact resistance of copper forgings.
Finally, when evaluating the impact characteristics and impact toughness of agricultural copper forgings, it is necessary to analyze the fracture morphology. The fracture morphology analysis of fractured copper forgings in impact test can further understand the impact characteristics and impact toughness of materials. The common fracture patterns include dimple, brittle dimple, perforated grain and the coexistence of dimple and brittle dimple. By observing and analyzing these fracture patterns, the impact characteristics and impact toughness of copper forgings can be evaluated.
In summary, the impact characteristics and impact toughness evaluation of agricultural copper forgings need to be combined with impact test, impact absorption energy, impact strength and fracture form analysis. These evaluation methods can help judge the impact resistance and toughness of copper forgings under impact load. In the process of design and use of agricultural machinery, it is important to evaluate the impact characteristics and impact toughness of copper forgings of agricultural machinery to ensure the safety and reliability of agricultural machinery.
