UNI 10569铝合金铸件一般公差.pdf

ITALIAN NORM UNI 10569 PRESSURE DIE CASTINGS OF ALUMINIUM ALLOYS April 1996 General tolerances Descriptors: Aluminium alloy, pressure die casting, casting gates and vents, machining allowance, dimensional tolerance, geometric tolerance ICS Classification: 77.120.10; 77.140.90 Summary: This norm determines the dimensional and geometric tolerances of pressure die castings, casting points and machining allowances. It applies to drawing dimensions without specific indications of tolerances. Reference Institute: UNIMET – Standardization of Non Ferrous Metals Approved by: UNI President, 24.04.1996 INDEX 0 INTRODUCTION 1 SCOPE AND FIELD OF APPLICATION 2 REFERENCES 3 DEFINITIONS Fig. 1 Examples of front areas of a pressure die casting Fig. 2 Examples of areas of movable parts of a pressure die casting 4 TOLERANCES 4.1 Linear dimensions Fig. 3 Calculation of the diagonal of the overall dimension of a casting Table 1 Tolerances regarding linear dimensions Table 2 Additional tolerances as a f