Induction centrifugal surfacing of the charge based on tin bronze powders with the addition of finely dispersed boehmite

Abstract

The method of induction centrifugal surfacing of a charge based on tin bronze powders of medium dispersion with the addition of finely dispersed boehmite, which is an intermediate product in the production of the nanodispersed modification agent (α-Al₂O₃), is described. Its characteristic feature is that it can be produced in the surfacing conditions resulting in the chemical transformation of the intermediate product present in the charge to the nanodispersed modification agent followed by its uniform distribution in the liquid phase coating. The results of metallographic studies and tribotechnical tests of these coatings are presented. The experiments were carried out to determine the optimum (2–3%) boehmite content of the charge resulting in the highest parameters of antifriction and wear resistance properties of the coatings based on tin bronze after induction centrifugal surfacing.

Keywords:

• Induction centrifugal facing
• tin bronze powder
• modifier
• tribe-technical tests
• wear resistance

Notes

Selected from Svarochnoe Proizvodstvo, 2015, 68 (9) 31–35.