June 2011 Welding News

June 30, 2011
Concern ESAB introduced gantry machine Combirex DX , designed for plasma and oxyfuel cutting. The new system can have from one to four cutters:

• Only one plasma cutter or in combination with one, two or three oxygen torches;
• Up to four oxygen torches.

Plasma cutting can be performed both in the usual way, and under water. Automatic control of the gas allows for easy switching between marking and plasma cutting. Maximum thickness of material being cut - 63.5 mm (depending on power source).

In oxy-fuel cutting, the maximum thickness of the material is about 200 mm. The process is fully automated with automatic ignition burners, control its height and proportionate regulation of gas flow. As the combustible gas can be used acetylene, propane, natural gas. It is also possible to use mixtures of flammable gases.

TABLE. Characteristics of gantry machines ESAB Combirex DX

Name Combirex DX
2500 3000 3500 4000
The recommended maximum sheet width, m 1.5 2 2.4 3
The maximum length of the transverse motion with a cutter (a tool), mm 2000 2500 3000 3500
Max. stroke length of the cross with two cutters, mm 2000 2500 3000 3500
Max. stroke length of the cross with three cutters, mm 1800 2300 2800 3300
Max. length of the cross-stroke with four cutters, mm 1600 2100 2600 3100
The width of the machine, mm 3925 4425 4925 5425
The height of the machine, mm 2010
The range of velocities in mm / min 50,8-25000
The maximum configuration A plasma. and 3 sour. Torch
4 sour. Torch
A plasma. and 2 sour. cutter, a marker

June 23, 2011
Holding Lincoln Electric has released a limited edition of the welding mask Viking Thor 2450. Its design uses Mighty Thor (Thor), a popular hero of the comic book company Marvel. New models, along with the rest of the series 2450 equipped with enlarged viewing window and has an internal adjustment of dimming.

Specifications of welding masks Viking Thor 2450:

• during blackout - 1/25000 seconds;
• internal control dimming / DIN 9-13;
• four sensors arc;
• adjustment of the delay in the transition from dark to light - from 0.1 to 1.0;
• cartridge size - 133 x 114 mm;
• the size of the viewing screen - 97 x 62 mm;
• temperature range
• Storage - from -20 ° C to +70 ° C;
• operation - from -10 ° C to +55 ° C;
• Weight - 0.595 kg.

June 4, 2011
Research Fellows of the Institute for the Study of Fraunhofer physical methods of measurement (Freiburg, Germany) have developed a new method of laser welding no through penetration of the welded products. In this case the laser beam does not reach the bottom surface of the metal and leaves no visible marks on it. Experts call this technology "controlled by welding with a partial penetration" (Controlled partial Penetration welding).

Fraunhofer Institute in cooperation with scientists from the Stuttgart and Dresden was a prototype, which controls the process of laser welding. To monitor the process uses an innovative thermal imaging camera, which generates up to 14,000 images per second. The system determines the depth of penetration of laser shots and controls the power and duration of its emission.

A new welding method is very promising in the automotive industry, because it requires no further processing outside seams or finishing decorative panels. In addition, the evaporation of zinc is excluded at the bottom of the joint, leading to corrosion of galvanized car bodies.