The electrodes using oxyacetylene welding. Operation process is as follows:

(1) cleaning the workpiece, the welding surface is exposed metallic luster.

(2) take the flat welding position welding, this can be used with the proper tires for the cladding layer thickness control can be used to limit thick block.

(3) with a neutral flame preheating, Yan Xin Do not touch the surface, the distance to 25mm is appropriate.

(4) when the workpiece is heated to the proper temperature, the welding surface can be coated in a layer-specific flux, such as warm-up was appropriate flux, flux will bubble boiling, then the oxide surface flux will be cleared continue to be heated to solvent welding surface and covered with a transparent liquid state was that you can begin backing weld surfacing layer.

(5) The surfacing weld backing layer, using a neutral flame, stirring constantly with a backing electrode tip flux, and subsequently melted, tip constantly running, the speed of the Welding Electrode coincided with the speed of rendering the same. To ensure that the flux maintain the workpiece surface. When the rendering process is completed, the welding surface should be smooth to form a thin layer of primer alloy, the thickness of about lmm or so. Such as the preheating temperature is low, the molten metal can not hit the bottom of leveling, and the formation of the workpiece on the table hit the ball or bump.

(6) surfacing welding layer of carbide. Alloy layer in the rendering above, with the YD-type electrode welding, use a neutral flame (flame carbide can slant) tip in a smooth uniform surface on the move, the flame front alloy welding heat (careful not to touch the tip of Yan Xin alloy particles), the electrode in the molten matrix alloy, followed by carbide particles also fall together. Solidification of molten metal in the matrix before, we should arrange the particles, the alloy electrodes can be used left hand pull to get, or another person holding a grounding electrode or a graphite rod for pulling the stick, stir in a rapidly near the particles, so neatly arranged in uniform. Cladding layer thickness according to design requirements control.

(7) After welding the workpiece, on the non-ventilated areas, slow cooling, can not quench, Conditional used asbestos blankets cover.

(8) after the workpiece is cooled to room temperature, if necessary, the welding surface grinding to the required size and shape.

(9) cleaning the workpiece, to remove all the splashing, slag, etc. Welding operation properly, the surfacing layer logo is of satisfactory quality: after cooling, welding layer was shiny golden surface, surfacing layer and the substrate metal matrix alloy with good alloy particles tightly packed, and uniform, firmly embedded in the matrix metal in Welding Assembly. Hot or burning the flag is: red metal matrix cooled, exposing the black surface of the alloy particles, the consequence of impaired performance alloy particles, affecting life. Insufficient heating of the signs are: cooling, was dull silver, the metal matrix alloy and the substrate with poor surfacing tool after running off the danger of surfacing layer.