Microbuzzer.com · Posted on 08-08-2010 by microbuzzer

When welding buzzer should note the following:

A, lead-free :280-290 degrees;
B, a lead :330-350 degrees;
Substrate (copper / iron / steel) General welding time: 3S
Silver surface of general welding time: 1.5S

(1) soldering iron before use, use multimeter to check resistance between the plugs should be 2 ~ 3kΩ. Then multimeter check the resistance between the plug and the metal value, multimeter gauge needles should be fixed, or should be thoroughly checked.

(2) Tip the general use of copper materials. For the protection of the welding of high temperature oxidation not rust, and often will tip after plating, and some also use easily tip the oxidation of alloy material. The new welding tip preceded by the official for tin plating. Method is to use fine sandpaper tip clean, then dip one pine fragrance, soldered in a hard object (such as wood) on the ground repeatedly, so that each side all the tinned tip. If you use a very long time, tip oxidation has occurred, use small rasp file to the light surface oxidation layer, the light in the exposed copper tip after the tin with the same with the new method of processing.

(3) the use of electric irons, if not the solder melting temperature is too low, or to completely melt the solder joint is not ugly or welding is not strong, the temperature is too high it will make iron, “burned to death.” We would also control the time a good weld, electric iron stay was too short, not easy to completely melt the solder, touch, easy to form, “Weld”, and welding time is too long, and easily damaged parts or make printed circuit board copper foil tilt. General 1 ~ 2s within a solder joint to solder well, if not complete, should wait a while longer welding time. Welding, soldering iron can not be moved, first chooses the location of contact with solder joints, and then tip the hot surface to contact with tin solder.

(4) electric iron plug is best to use three-wire plug, make the case properly grounded. Check carefully before using the power plug and power cord for damage, the tip is loose.

(5) electric iron is strictly prohibited in the course of any percussion, soldering iron over the head, the available cloth to wipe off.

(6) welding process, the electric iron can not leave around everywhere, not soldering iron should be placed on the shelves.

(7) The power cord can not take the iron head to prevent scorch the insulation layer of the accident.

(8) After use, should be promptly cut off the power, cooling, electric iron and then to recover the toolbox.

(9) welding is completed, the circuit board to use alcohol to clean the residual flux, to prevent carbon flux after the impact of circuit work.

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