What are the types and characteristics of thermal spraying line materials

       1) The wire for thermal spraying is made by cold drawing with a wire drawing machine. Therefore, it is generally suitable for metal materials with certain plasticity. Commonly used spraying wires are zinc wire, aluminum wire, aluminum-zinc alloy wire, steel wire, copper wire, nickel wire and molybdenum wire. There may be lubricants applied during wire drawing on the surface of the wire, and degreasing treatment is required during use.

2) Tubular powder core wire

Tubular powder-cored wire refers to a wire-like spraying material drawn by wrapping a metal or non-metallic compound powder core with a metal sheath. The metal sheath of the tubular wire is required to be a metal or alloy material with certain drawing properties, so the selection range is smaller than that of the traditional solid core wire. The powder core material can be various alloys, oxides, carbides, and the like. Compared with the traditional solid core wire, the tubular powder core wire greatly broadens the composition and application range of the coating, and can manufacture special alloy coatings. However, the cost of rolling equipment for manufacturing powder core wire rods is relatively high, and the choice of metal sheath is greatly restricted by the composition and drawing performance. The addition amount of alloying elements is affected by the powder particle size, density and powder addition coefficient. The powder addition coefficient of the powder core wire is generally about 50% at most. Some multi-element high alloy wires are difficult to roll, so the alloy composition of the spray coating is also different. restricted.