Читать книгу Farm Machinery and Equipment - Harris Pearson Smith - Страница 9

The strength, durability, and service of a farm implement depend largely upon the kind and quality of material used in building it. There is a tendency in the construction of implements to eliminate as many castings as possible and to use pressed and stamped steel. Where this is done, the cost of manufacturing machinery in quantities is materially reduced. The weight of the machine is reduced, but the strength and durability are retained and often improved. The success or failure of an implement frequently depends upon the material used in building it.

The materials used in the construction of farm equipment may be classified as metallic and nonmetallic. The metallic is further divided into ferrous and nonferrous materials.