What are the general technical requirements for castings?

Casting liquid metal into a casting cavity that is consistent with the shape of the part, and after it is cooled and solidified, the part or blank is obtained, which is called casting. Castings obtained by casting methods are called castings. So do we understand what the general technical regulations are for castings?

General technical regulations for castings:

1. Material-level regulations. The key ones are strength, compressive strength, tensile strength, and fracture toughness.

2. Specification precision and shape tolerance precision. Different castings have different requirements, using different specifications and geometric tolerance standards and different tolerance levels.

3. According to the application regulations, project acceptance regulations are required for other defects of castings. Such as air vents, sand holes, shrinkage porosity, casting defects, welding nodules, sand inclusions, cracks, etc.

Pour metal into a casting mold that has the same shape and specifications as the part, and wait for it to cool and solidify to obtain a blank or part called a casting.

Requirements for the formulation of castings:

1. Meet the requirements of compressive strength and bending stiffness. For shell parts with very large bearing capacity, achieving compressive strength is a key issue; but for most shells, the primary criterion for identifying characteristics is bending stiffness, because the bending stiffness of the shell not only affects the normal operation of the transmission system parts , and also affects the working precision of the components. Casting parts Kuaiyou automation technology model selection is included in Baidu.

2. Heat dissipation characteristics and thermal deformation issues. Friction and heating of parts inside the box body will cause the viscosity of the grease to change, affecting its wetting performance; the rise in temperature will cause thermal deformation of the casing, especially thermal deformation and internal stress due to uncoordinated temperature distribution, which will affect the precision and pressure resistance of the casing. Intensity has greater harm.

3. The product structure design is effective. For example, the distribution of support points, the layout of ribs, the design of punching parts and buckle structures should all be beneficial to improving the strength and bending stiffness of the shell.

4. Good process performance. It includes process performance in various fields such as blank production, machining and heat treatment, installation and adjustment, installation and fixation, hoisting and transportation, maintenance and repair.

Castings are product workpieces obtained by casting, and generally require some mechanical processing.