First, the principle of water welding machine
Water welding machine is the abbreviation of oxyhydrogen flame welding machine with water as raw material.
The water welding machine uses water under the action of an alkaline catalyst (such as sodium hydroxide or potassium hydroxide) to pass direct current at both ends of the electrolytic cell, and the water undergoes an electrochemical reaction to generate hydrogen and oxygen. Hydrogen is used as fuel, and oxygen is used for combustion. The safety valve and flame arrester are ignited by a hydrogen-oxygen flame gun to form a hydrogen-oxygen flame, and the workpiece is welded. It is mainly composed of an electrolytic cell, an electrolytic power supply, a safety valve and a flame arrester, a flame regulating tank, and a hydrogen-oxygen flame gun.
Second, the advantages of water welding machine
1. On-demand production, no storage, and bottled Compared with gas, it is safe and convenient.
2. The raw materials are simple, only water and electricity are needed, and it can be used immediately after starting up. It is economical and practical, has good mobility, and is small in size. It can be carried with you or used in field operations.
3. The flame is concentrated, suitable for precision flame processing.
4. Hydrogen and oxygen are odorless and non-toxic, and the combustion product is only water, which does not pollute the environment.
5. The oxyhydrogen flame is a carbon-free flame, and the workpiece is welded tightly without carbon embrittlement.
Three, the application of water welding machine
1. The application of small water welding machine
Product polishing of acrylic handicrafts;
plexiglass flame polishing;
gold and silver jewelry welding;
motor enameled wire welding;
Denture welding and dental mold repair;
Frame welding;
Optical fiber welding;
Small flame spraying;
Small quartz tube softening ;
Small flame heating;
Internal cavity preheating;
Various types of soldering.
2. Application of medium and large water welding machines
Brazing and welding of air conditioners;
Welding of battery lead plates;
Hyperbaric oxygen can be used to cut steel plates of various thicknesses;
Quartz glass rods are die-casted;
Drawing seals for water injection ampoules in pharmaceutical factories;
Workpiece hardening.
Four. Precautions for the use of water welding machine
1. The electrolyte will decrease after a period of use. If the air pressure is not enough during normal use, you can add distilled water Make it work at the normal water level, do not add mineral water, because the mineral water contains other minerals, which will affect the normal work of the machine. (For the first use, you need to add electrolytic powder).
2. After using the electrolyte solution for the first time, you only need to add water in time in the future use process. The electrolyte solution is updated every 3 months or so, and the use effect is better.
3. When adding water and changing water, turn off the flame gun and power supply first, and then turn on the flame gun switch. After all the remaining gas in the machine is exhausted, slowly unscrew the water nut and add distilled water until it does not exceed the “high” level. The scale” is not lower than the “low scale” position, tighten the nut and restart the machine.
Note: Ignition before use, turn on the power switch, the machine produces gas, when the air pressure rises to 0.13MP, open the flame gun regulating valve to exhaust the air in the air pipe, and then ignite and use; Afterwards, the method of extinguishing the flame: the regulating valve can be turned off, and the flame will be extinguished automatically, or the regulating valve can be increased, the flame can be flushed out with the gas in the machine, and then the power will be turned off.
4. When adding water or alcohol to the filter tank, the fire of the welding torch must be extinguished first, and then the residual gas inside the machine must be discharged through the welding torch mouth. After confirming that the gas in the machine is completely discharged, the filter can be unscrewed. tank to operate. The water or alcohol in the filter tank cannot exceed 1/2 of the volume of the tank. If too much is added, the water or alcohol in the filter tank may be brought into the air pipe and the welding torch, which will affect the normal use of the welding machine.
5. If there is accumulated water in the hose, the flame will turn yellow, so it should be discharged in time.
6. Check that there is no air leakage at the connection of the hose.
7. Do not place any metal objects and liquids on the machine to avoid short circuit and other safety problems.
8. Please take safety precautions when debugging and replacing the electrolyte. The electrolyte is non-toxic, but corrosive, and can cause burns to the skin and eyes. If it is accidentally touched, immediately rinse it with clean water or send it to the hospital for treatment.
9. The control circuit of this machine adopts a fully enclosed design, please do not disassemble it without the guidance of our factory.
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