POST-PROCESSING OF PRODUCTS MADE BY ADDITIVE SLM METHOD

The methods of finishing surfaces of products by selective laser melting (SLM) are considered. The experience of experimental studies performed for manufacturing cutting tool housings (cutters, cutters, drills) using SLM is presented. The products considered have a complex spatial shape of the surfaces, which cannot be manufactured using traditional methods. The advantages of additive technologies for manufacturing such products are widely described, but this method has quite a few disadvantages. This includes high surface roughness and insufficiently high accuracy of the location of these surfaces. Thus, with a surface roughness requirement of Ra2.5 microns, additive technologies can only produce Ra12.5 microns (Rz40). The highest accuracy of products obtained by SLM is 0.1 mm with a requirement of 0.03-0.05 mm. Thus, the additive manufacturing method of complex products can be considered as a preparatory stage, and the finishing of the base and working surfaces has to be performed at later stages of production. The experience of final processing of these products is analyzed using the example of manufacturing turning tool housings, as well as end and end mills.