Fast Magnetic Abrasive Finishing with Diffusionally Alloyed Powder

The article analyses the increase of durability of operating surfaces of highly loaded machine parts. The advantages of surfaces with regular microgeometry, obtained by vibration rolling method, compared with usual rough surfaces for improvement of operational properties are shown. Tests of samples and control samples from steel 20 and cast iron samples with control samples from steel processed by grinding and vibration rolling are carried out. The results of research on increasing the wear resistance of the surfaces of details with regular microgeometry are given. Wear mechanisms arising at fretting of vibro-rolled samples in comparison with the process of grinding are established.

Section: Resultsmentioning

confidence: 99%

Increasing the wear resistance of highly loaded parts such as bodies of rotation by the method of vibration rolling

Leonidov

2023

“…Magneto-abrasive action generally has a favourable effect on the performance properties of machined surfaces [29][30][31][32]. Temperature in the working zone (ТMAT) at magnetic abrasive machining without cooling mixture (CM) [11], is of the order of 150°С (Fig.…”

Section: Methodsmentioning

confidence: 99%

Finishing of aluminium alloy flat products

Leonidov

2023

The possibility of improving the surface quality of flat products made of aluminium alloy AMc is considered by using the method of magnetic abrasive processing in the finishing stage of manufacturing. The influence of the main technological parameters of magnetic-abrasive processing, temperature factors and the composition of the cooling lubricant on the quality of the processed surface has been investigated. The results obtained from experimental studies have shown significant improvements in surface quality, which allow us to conclude on the effectiveness of the magnetic abrasive blasting method for finishing products made of the AMc aluminium alloy.

“…At the micro level, the anisotropy of properties of plastically deformed polycrystals is associated with three types of textures: mechanical, dislocation and crystallographic textures [29]. The crystallographic texture causes fundamental effects on all types of anisotropy of crystalline bodies [30][31][32][33].…”

Section: Problem Statementmentioning

confidence: 99%

Features of the manufacturing technology of a multilayer tool with an ordered texture

Leonidov

2023

The auto-oscillatory process in metal cutting is analysed in order to understand the nature of chip formation in turning and to evaluate the importance of ensuring the stability of the technological system in machining. The method of multilayer tooling with ordered texture is selected as one of the promising directions for solving this problem. Microfractographic analysis is carried out on fractures of specimens cut in transverse and longitudinal directions. The character of crack propagation at fracture by the ductile intragrain mechanism is established. The design of a holder of a penetrating cutter with inserts having a directed texture is proposed on the basis of studies of a multilayer tool with an ordered texture.