welding

Tribological characteristics of electric arc coatings from powdered wires in technological environment

The research of tribological logic characteristics of electric arc coatings from powdered wires in technological environments was conducted: under conditions of limit lubrication in lubrication I-20;
in the environment of 3 % emulsor of the brand Hydroway 1060 and lubrication M10V2. Coatings in the thickness of 1.2–1.5 mm were applied by serial electro-arc metal with the inhibitor of PMI-1

Surface structure and roughness of electric arc coatings from powdered wires after grindin

The peculiarities of coating formation by the gas-thermal method at application of powder wires are considered. This is due to the presence of pores and solid inclusions in the resulting layer. Therefore, it is important to investigate the influence of the mechanical processing parameters and the composition of the powder wire on the roughness of the polished surface of the electric arc coatings. Coatings in the thickness of 1.2 ... 1.5 mm were applied with a serial electro-arc metalizer EM-14 on a pre-treated surface of both flat and cylindrical specimens.

Zabezpechennia tekhnolohichnoi mitsnosti zvarnykh stykiv obsadnykh trub [Ensuring the technological strength of welded joints of casing pipes]

Аre analyzed casing columns production peculiarities using welding techniques. Specifically planning of experiments was executed to ensure optimal implementation of the process. The feature of feedback was taken as contents of hardening structures in the thermal compound influence area. The results enabled to set mode options that makes it possible to create high-quality weld in the implementation of the two clad layers. Model sample joints in pipe casing were welded.