Machinery Life Increase by Combined Strengthening

Science Intensive Technologies in Mechanical Engineering

et al. 2017

The promising direction of strengthening development is a combined strengthening with surface plastic deformation with the further chemical-thermal treatment, in particular, with case-hardening. The technological possibilities of combined strengthening by a deformation wave with the further case-hardening of structural mild low-alloy steels by the example of steel 10ChSND are considered. It is defined that the results, obtained as a result of combined strengthening, are comparable with the results of strengthening of case-hardened alloy steels used for manufacturing heavy loaded parts of machines.

Technology of combined strengthening by wave deformation and case-hardening of structural low-alloy steels

Kirichek¹,

Соловьев²,

Science Intensive Technologies in Mechanical Engineering

et al. 2017

Possibilities of Combined Metal Hardening With Wave Deformation and Subsequent Heat Treatment

Kirichek

Yashin

et al. 2022

Transport Engineering

Self Cite

Nowadays, industry development requires making new strengthening technologies that allow expanding the rational scope of their application. It is quite promising to use methods of combined hardening that allow changing the physical and mechanical properties of the surface layer during successive external actions having different physical nature: sequential plastic deformation and external thermal effects. Therefore, the objective of the conducted study is to make a complex technology of combined deformation and thermal hardening. Preliminary plastic deformation is proposed to be carried out by the method of wave deformation hardening, in which the improvement of properties is achieved by forming structural imperfections of the crystal lattice of the material under the action of prolonged shock pulses of significant energy and duration. The use of these pulses contributes to a more complete plastic deformation of the hardened metal and the formation of a deeper hardened surface layer than with traditional methods of deformation hardening. The proposed combined technology, consisting in the use of wave deformation hardening before thermal treatment, allows to obtain high hardness and plasticity in the surface layer, provides an additional resource to increase the operational characteristics of the part. The novelty of the work is in the complex development of a method for combined wave deformation and thermal hardening of the surface layer of alloy steels. The conducted studies of the method have shown the high efficiency of the technology of combined deformation wave and thermal hardening for various grades of alloy steels.

Technological support of carrying layer parameters by deformation and combined strengthening

Kirichek¹,

Соловьев²,

Science Intensive Technologies in Mechanical Engineering

et al. 2018

A promising direction of strengthening development is a combined strengthening by a surface plastic deformation with the further case hardening. There are considered possibilities for the creation of a multilayer heterogeneous structure with high strength and operation characteristics by a combined impact with a deformation wave and case hardening. The investigation results of the wave deformation strengthening of deposited metal allowing the support of a considerably higher level of material mechanical and operation properties as compared with rolled metal are presented. The results obtained allow recommending a wave deformation strengthening and combined technologies on its basis for operation properties increase of machinery in a wide range.