Mold repair machine operating procedures

Patch preparation:
A. Power (220V, single-phase 50HZ)
II. Connect the magnet:
1 wring tight magnet on the cable at the negative output terminal.
2 two magnets must be adsorbed on the mold. Such as die size is too small, it should as far as possible while adsorption.
3 magnet contact with the mold surface is kept clean to ensure good conduction. The copper surface adsorption of impurities to be removed,
Mold surface adsorption magnets at the clean-up of oil or oxides with kerosene or emery cloth.
Magnets point: as close as possible to a straight line from the defect, and the flat area of contact with the magnet.
Third, connect the welding head:
1 welding head cable Securely tighten the to host positive output terminal.
Select the type of the shape of the copper welding head and the the copper welding head shape according to the actual situation of the surface defects
The amount of processing, pay attention to shape and mold after processing the contact area is not too large. (See mold repair Note asked
Question 2)
Note: the course of their work, the magnets line and the gun line mobile will tighten the terminal Larsson, resulting in terminal ablation,
Affect the repair results, you should always check and tighten.
IV. Plug in the foot control switch
V. Adjust the power, select fill material:
Adjust the host power (1) power data shown in accordance with each fill material shell, the reference to the same thickness steel sheet material power.
(2) depending on the mold steel choose a different fill material (see statement of fill material)
VI mold Patch:
Basic processes: 1) the torch is pressed against the surface of the fill material.
          2) The foot switch is depressed.
          3) Rolling torch.
          4) Release the foot control switch.
          5) welding head from the mold.
Note: If the error has order machine will alarm protection, but may occasionally pillow melting on the surface of the mold pit!

Note:
          (1) clean-up: simple cleaning to remove oil and impurities, or in need of repair during the patching process energized poor and sparks.
         (2) Rolling speed: torch rotational speed pulse output current in the frit formed on the fill material is closely Ordering appropriate rotational speed is not too fast, otherwise the patch after polishing the peeling and small pores phenomenon of of a small amount of fill material.
(3) the torch contact with the mold point: the contact area between the torch and fill material the smaller the pressure attached to the better instantly by the current density greater the (current more concentrated), the greater the heat of the solder joints, fill material combined with relatively preferably. The shell of the fill material and the power requirements of the power data f5mm standard the torch electrode rod with a flat-screen fill material contact, the same power welding head contact area is larger, the current spreading effect is not ideal complement, on the contrary, the contact area is too small, repair The process could easily lead to the fill material in the molten splash and surface potholes.
(4) posture and pressure: the torch repair and mold surface 45 degrees to better apply some pressure on the torch, the size of the pressure according to the roughness of the surface of the defect, is not smooth, more impurities and surface force should be large.
(5) complex cavity: fine, multi-angular, complex surface repair precision power, thin material multiple patches better normal state applicable to repair than the larger defect.
(6) surface oxide patch:
Process: clean up the impurities ---> to remove the oxide layer ---> edge of the patch with a small power ---> filled ---> polishing
1) oxidation mold repair must first use power tools to remove the nitride layer, the fill material directly welded to the steel substrate, or the fill material and the substrate between the isolation oxide layer, easy to peel off.
2) try to use low-power, thin materials, reduce, reduce repair heat generated edge traces patch edge portion.
(7) patch point polishing the outer ring light projections, causes produce heat patch hardened workpiece caused by quenching characteristics of a good material is particularly evident edge portion of the low-power, thin material patches to avoid this phenomenon ( reference to the oxidation mold repair).
(8) patch the polished concave, causes hard fill material below the substrate due to the choice of the hardness and the substrate similar fill material to avoid.
VII. Routine maintenance
In order to make your machine better serve you, should be prepared on the day-to-day maintenance of the machine, which has a great influence on the welding quality. , It should pay particular attention to the work of pulse current of low voltage high current terminals, cables, torch and magnet copper. Be sure to keep the same mold electrical contact between them.
1) magnet copper wear promptly replaced.
2) Cable If any signs of broken strands should be replaced or repaired.
          3) inside the torch should be kept clean, frequent cleaning of impurities.
4) Check the positive and negative terminal, securely tighten the timely replacement of any ablation phenomenon.
5) the repair process torch fever is a normal phenomenon, ongoing patching applications the two welding torch used interchangeably, insulation material shall not be wrapped in the torch outside, otherwise it will accelerate the damage to the torch.