Investigating Corrosion Resistance of Heavy-Duty Steel Fasteners Regarding Assemblies Operating in Maritime Climates under High Pressures Power, Metallurgical and Chemical Engineering

Abstract

The paper presents investigation results and a technology for manufacturing fastener workpieces out of the 07Kh16N6-Sh (07Х16Н6-Ш) steel using high-temperature heat treatment. The steel undergoing our testing was additionally doped with molybdenum, as reflected in the 07Kh16N6M-Sh (07Х16Н6М-Ш) designation, which facilitated grain refinement. We implemented accelerated climate testing of bolts in order to assess the corrosion cracking resistance of 07Kh16N6-Sh (07Х16Н6-Ш), 07Kh16N6M-Sh (07Х16Н6М-Ш) and 13Kh15N4AM3-Sh (13Х15Н4АМ3-Ш) steel fasteners in maritime climates.

Design Algorithm for the Development of a Technological System Applying Paint and Varnish Coatings for Low-Tonnage Chemicals

“…GOST is the fundamental standard for the selection of paint and varnish systems for various types of metal products and their operating conditions. The choice of paintwork system depends on the operating conditions in accordance with GOST 9.401 [3,4]. The logical model for the choice of paint and varnish coatings involved in the design process is presented in Figure 1.…”