The hardness of the working surface of plate flange shall be HB 170-220.
The scraping process shall be adopted for the working surface of plate flange, and the planing process can also be adopted for the "3" flat working surface. The surface roughness of the planing working surface shall not be greater than 5um according to the arithmetic mean deviation Ra of the contour
Painting detail technology and tempering treatment of carbon steel flange of machine tool castings
The carbon steel flange shall be subject to stability treatment and demagnetization.
Flatness of carbon steel flange: carbon steel flange can be divided into reference level, master level and working level. Iron carbon steel flange are subject to regular weekly inspection according to standards, and the inspection cycle can be 6-12 months according to specific conditions.
Machine tool castings include machine bed, workbench, column, gantry top and connecting beam. The materials are fine gray cast iron ht200-ht300. The appropriate proportion, high tensile and bending strength and popular heat treatment process reduce the stress and deformation of the casting. Use tends to be stable. There are many factors affecting the quality of carbon steel flange, mainly the design process of large carbon steel flange. In addition to determining the geometry and size of machine tool castings according to the working conditions and metal material properties, the rationality of the design should also be considered from the perspective of casting alloy and casting process characteristics, that is, obvious size effect, solidification, shrinkage, stress and other problems, so as to avoid or reduce the occurrence of defects such as component segregation, deformation and cracking of carbon steel flanges.
