Investigation of surfaced press molds made its working resource

Blokhina, I. V.

doi:10.15587/2312-8372.2017.105637

Cited by 3 publications

(2 citation statements)

References 3 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, this process has a number of advantages: a high stability and performance of the deposition welding process, regulation of the deposition welding process parameters in a wide range, the absence of spattering, control of the filler metal droplet transfer, and so forth. Due to the reverse-polarity plasma arc, the process of the cathodic cleaning of the deposition welding zone is realized where oxide films are effectively broken and removed, the wetting and spreading of the deposited metal are improved [11,12].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of the 308LSi Austenitic Steel Produced by Plasma-MIG Deposition Welding with Layer-by-Layer Peening

Ol’shanskaya

Трушников

Dushina

et al. 2022

Metals

View full text Add to dashboard Cite

This paper investigates the effect of cold working via layer-by-layer peening on the microstructure and properties of a 308LSi steel workpiece produced by the wire deposition welding with a consumable electrode following the principle of 3D printing. The microstructure, phase composition and mechanical properties of the metal are studied before and after the workpiece synthesis. In the microstructure of the workpieces produced by peening, there is, in addition to austenite, a small quantity of fine-dispersed carbides and residual δ-ferrite in the interdendritic spaces. It is demonstrated that the use of layer-by-layer cold working in the process of deposition welding enables eliminating transcrystallization of the deposited metal, promotes an increase in the microstructure’s degree of dispersion and a more uniform distribution of fine-dispersed carbides in the volume of the dendrites. It is found that these structural features of the deposited metal in the additive manufacturing of a workpiece with layer-by-layer peening lead to an enhancement of the strength characteristics as compared to the material produced by the conventional wire deposition welding. Meanwhile, the level of the ductility characteristics remains high.

show abstract

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of the 308LSi Austenitic Steel Produced by Plasma-MIG Deposition Welding with Layer-by-Layer Peening

Ol’shanskaya

Трушников

Dushina

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

“…Consumable electrode plasma-jet hard-facing (plasma-MIG) is a hybrid process that combines consumable electrode arc plasma-jet hard-facing and plasma-jet hard-facing [15][16][17][18]. The use of two sources of heating (a plasma arc from a nonconsumable anode and an arc from a consumable electrode) will allow regulating the heat input into the product in a wide range, increasing productivity and ensuring the highest quality.…”

Section: Introductionmentioning

confidence: 99%

Research of the technological methods influence on the formation of structure and properties during the additive growth of products from nickel chromium steels of the austenitic class by plasma-jet hard facing methods

Ol’shanskaya

Dushina

Трушников

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The paper considers the influence of a change in the heat rate of a source with time by means of slope control, using the example of plasma-jet hard facing, as well as changes in the original structure due to laminated cool post weld upsetting of the pads, using the example of plasma-jet heat-facing with a consumable electrode (Plasma-MIG). It was found that the formation of the structure is accompanied by metal deposits transcrystallization. It is shown that the use of vibratory actions on the liquid bath by slope control modulating during plasma surfacing contributes to the partial suppression of transcrystallization of the metal deposit: the direction of columnar crystallites growth changes relative to the previous layer, contributes to the refinement of the pine-tree structure, which leads to a change in mechanical characteristics. The best properties are observed when surfacing with slope control with a frequency of 15000 Hz. The use of laminated cool post weld upsetting during the plasma-jet hard-facing by consumable electrode reduces the transcrystallization of the metal deposit. It forms dendritic crystals of an equiaxial form, which leads to the reduction of the morphological grain flow, and the strength characteristics of the fused on alloy exceeds the level of the metal durability fused on without post weld upsetting and materials obtained by traditional technologies. However, the moldability characteristics remain at a high level.

show abstract

Progress in Additive Manufacturing

2023

Prog. Phys. Met.

View full text Add to dashboard Cite

The article analyses the current trends in the development of additive manufacturing (AM) technologies. In recent years, the development of additive technologies is one of the industry priorities. Additive technologies, first of all, make it possible to implement effectively any design and engineering ideas in high-tech industries, such as aircraft construction, engine and engine building, rocket engineering, modern electronic devices, etc. The expansion of the range of materials for additive technologies will facilitate their introduction into mass production. Meanwhile, the development of breakthrough scientific and technical solutions in the field of AT is impossible without new powder materials. Currently, there is an evident fundamental problem, namely, the lack of comprehensive scientific research aimed at developing new powder materials for additive technologies, adapting these materials to the requirements of modern additive manufacturing machines and studying the properties of products obtained by additive technology with various variations of technical parameters.

show abstract

Investigation of surfaced press molds made its working resource

Cited by 3 publications

References 3 publications

Microstructure and Properties of the 308LSi Austenitic Steel Produced by Plasma-MIG Deposition Welding with Layer-by-Layer Peening

Microstructure and Properties of the 308LSi Austenitic Steel Produced by Plasma-MIG Deposition Welding with Layer-by-Layer Peening

Research of the technological methods influence on the formation of structure and properties during the additive growth of products from nickel chromium steels of the austenitic class by plasma-jet hard facing methods

Progress in Additive Manufacturing

Contact Info

Product

Resources

About