How to Weld Aluminum alloy?

Repair welding of aluminum:

Occasionally, rupture of the engine block or a machine aluminum casing. The replacement is in serious difficulties, especially when the machine is old and damaged parts can not be obtained. I could use some magic, which quickly corrected the error. There are as cold metal adhesives, but they are usually plastic based, and their applicability to heat the exposed surfaces does not give satisfactory results. If you have a house welding, welding of castings also can correct the error locations.

Repair welding of aluminum successful implementation of essentially clean surface should be provided. Brigécolos by first washing and rinsing with hot water to clean the surfaces. Then remove the oxide layer drótkorongozással damaged felületekről. Aluminium, the fault location, cracks should not kill roots. The preparation is done manually drill distributed by the actuator so that the casting of the crack along one entire wall thickness of 4mm flute drill bits repeatedly drilled.

The holes about 3 mm away from each other is to make the whole length of the crack.

Welding of 12% silicon content, INNOALU 12 types of electrodes (80 to 110 A + polarity) is used. Usually, this is all occurring in the electrode for welding cast aluminum can be used satisfactorily.

Before welding, the welding of a gas burner to heat its immediate surroundings. There is no need to warm up the entire casting, if enough of the crack under sections 200 to 300 C. The heat it. Then one end of the crack in the weld start, and preferably is carried out continuously without interruption. After the welding slag residue thoroughly to remove as they are alkaline and can cause corrosion on aluminum megtapadva strong. If necessary, 20% of dietary vinegar can neutralize the surface.

Before using the electrode INNOALU 12, note the following information:

The coating of aluminum welding electrodes, if the original packaging is opened, the air moisture quickly átnevesedik. The wet welding electrodes during hard splash. Therefore advisable to dry out before using them. This 200 to 250 ° C preheated oven can do. Before welding, keep warm for 1-2 hours through the rods to dry out sufficiently to give. The quality of the castings repaired by welding is advisable to check. The check-THERM DIFFU repedésvizsgálatához and recommend chemical kit. The three bottles containing three different chemical functions, which are as follows:

-Red indicator dye
Cleaning fluid
Liquid-brush development

The tests performed in the following order:

First, wait until the welded iron to completely cool down, then welded the surface evenly with a red indicator dye is needed. Then wait at least 15 minutes.

No need to fear that the ink dries on the surface.

-15 Minutes after a brush with water and thoroughly washed off the paint. The dry erase surface and a second cleaning fluid bottle is washed once more in the weld and its immediate surroundings.

, While the cleaning liquid evaporates from the surface, thoroughly shake the bottle a third the cleaning liquid. The bottle was placed in the keverőgolyót improved mixing order. This voice can be heard when shaking. The dry surface in a thin layer stuck onto the access code. It dries white layer and the 15 minutes after the repair of any defects (cracks, inclusions), it has been witnessed with red stains.

If the two sides improved öntvényfal is available, the test can be much simpler and faster. In this case, the spray on one side and the red indicator dye immediately afterwards, on the other side of the white liquid brush development. The repair of any fault of the white page appears after 15 minutes. If an error is detected during the investigation, repair the fault is corrected in the manner described is carried out again.