Electro-Spark Deposition Welding Machine (LT-1000)

Principle of the equipment
Electro-spark deposition technique is to release in high frequency between metal electrode and base material the powerful electrical energy stored in power source; Air ionization taken place between metal electrode and base material generates a channel, which, brings about high-pressure micro areas as well as instant high temperature on the surface of base material; Meanwhile, micro electric field make ionic-state electrode material infiltrate into the base material, resulting in metallurgical combination. Electro-spark deposition technique is an instant process converting from high temperature to refrigeration; It is not welding, or coating, or element infiltration, simply speaking, it is intervenient.

Equipment features
Digital indication: To facilitate accurate adjustment of equipment parameters for precise restoration.
No anneal and deformation happen to the substrate: Unnecessary to preheat the substrate; No heat input during bead welding; And thus no deformation, undercut or residual stress, no local annealing, or deformation on metal structure of the mould or substrate.
High welding strength: Full infiltration to the surface of the substrate, resulting in strong adherence.
High restoration precision: Thickness of bead welding - from micrometers to millimeters; Only grinding and polishing are necessary; No chromatic aberration after restoration.
Multifunction: Applicable to bead welding, surface strengthening, etc. Thickness and finish required for bead welding and surface strengthening could be achieved by means of regulating power and frequency of electric discharge.
Environmental protection: No pollution during application.
Easy to handling: Easy handling for anyone without an operation permit; Bead welding is feasible at any place difficult to weld.
Cost-efficient: Immediate restoration on site is feasible to improve production efficiency and save cost.

Typical equipment applications in foundry industry
Foundry products for automobile components: Restoration on casting defects of automobile exhaust pipe, intake pipe, hub, brake hub, brake disc, cam, crank shaft, piston, cylinder, clutch, friction plate, exhaust valve and so on; E. G. Restoration on defects at surface pass of automobile body, such as sand hole, blow hole, and so on.
Machinery industry and machine tool industry: Restoration on ultra-poor work pieces and machine tool's rail, various axis, cam, hydraulic forging press, hydraulic press plunger, cylinder wall, journal, roll, gear, belt pulley attachment, mandrel for spring formation, plug gauge, ring gauge, various rollers, rod, column, lock, bearings, etc.
Chemical industry: Agitating shaft of the reactor welded on the corrosion-resistant & wear-resistant layer, by means of which pump plunger, pump impeller, pump shell, seal ring, bushing, valve sealing surface, valve rod, valve core, fan blades, compressor crosshead, acid-resistant plunger impeller, sleeve and ring-shaped spare parts, etc.
Industries of coal, metal, power, metallurgy, shipbuilding, and power supply: Surface strengthening on fan parts, dump truck parts, filter net slice, various punch dies and punches, coal transport screw mandrel, transmission parts, steam valve, bearing for heavy load, roller, V-shaped roll for pipe production line, guiding roll for wire rod production line; On-line restoration on pressed ditch (pit) on roller surface; Restoration on axle neck of the roller; Surface strengthening on molybdenum mandrel; Restoration of burning machines, heating machine, annealing tank, exhaust pipes, metallurgical furnace mouth, casting mill, etc.
Industries of papermaking, printing, and dye printing: Paper dryer, pressure roller, journal, gear shaft, belt pulley attachment, ink roller of printer, printing roller, machinery parts for dye printing.