FIELD: valves production.
SUBSTANCE: invention can be used to restore and strengthen the sealing surfaces of shut-off and throttling valves, end seals of the contact pairs. Flux-cored wire consists of steel cladding and powder charge in the following ratio, wt%: ferrochrome 20.0–26.0; boron nitride 1.0–3.0; aluminium 1.0–1.4; ferrotitanium 1.1–1.8; boron carbide 2.0–5.0; iron powder 5.0–17.0; steel shell – the rest being. Composition of charge varies depending on deposition method including coefficients of transition of alloying elements in weld metal.
EFFECT: flux-cored wire provides an increase in wear resistance of the coatings deposited on the part, operating under conditions of metal friction against the metal in contact with corrosive medium.
1 cl, 2 tbl
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Authors
Dates
2018-07-12—Published
2017-05-29—Filed