2011年4月18日星期一

Laser welding wire molds for applications

Laser welding is a high concentration of light and heat in a small (0.2mm ~ 2.0mm) of the spot within in an instant (0.5ms ~ 20ms) wire and die within the base metal melting. Melt cooling, if the welding part of the microstructure of base metal with the same mold, you can ensure the welding quality; If not, it may appear trachoma, cracks, or bonding is not strong and fall off and so on.

Select the quality of welding consumables:

1. If you choose to die with the same base metal wire with a metal   bar when the laser, the microstructure of metal melting the base metal would be inconsistent with the mold, from the impact of welding quality.

2. If you choose stainless steel wire, or close to the material when the laser welding of stainless steel with the same problem could occur, and can not guarantee that the hardness after welding. Because less carbon stainless steel, low hardness, welding, after welding bit easier to wear.

3. German imports wire for different mold materials, there are different models. However, different from the welding laser welding, laser welding is a high concentration of light and heat welding, welding wire model for the choice of not very strict, as long as welding followed by melting the base metal and hardness consistent with good access, you can achieve a good weld quality.

The preservation of wire:

Because the laser wire is alloy, not stainless steel wire, there may be rust badly kept. Some of the laser wire in a thin coating of rust-proof material, but not too thick coating of rust layer, or may affect the welding quality,  rust-proof layer which is equivalent to impurities in the welding process. In particular the welding wire mold mirror, but not suitable for plating rust layer.

Use wire sealed bag, put inside the moisture beads, stored in a dry environment. If on long-term air-conditioned environment, save the six months to a year will not rust.
wire mesh cable trays, cable tray fittings, cable tray supports
If the wire has rusted, the rust layer surface with sandpaper to fight to the light, you can use without affecting the welding quality.

German wire commonly used model is MOLD10, MOLD50, MOLD55 and MOLD90. Which diameter is 0.3mm, 0.4mm and 0.5mm wire commonly used in the domestic inventory in stock. If you want to order special wire, then from the German order, depending on the order determined by the amount of goods between the period of one week to three weeks.

Wire models of choice, mainly based on the use of   molds and hardness may be. However, the use of laser welding parameters for each different, so when you type in the choice of wire to the wire for use as a reference, the laser welding parameters and operating habits.

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