The company Lincoln Electric has released a new cored wire Metalshield MC-706 for semi-automatic welding (GMAW).
Features of wire:
- span wire is made of mild steel;
- minimal spatter;
- low hydrogen content;
- high welding speed;
- allows a large number of surface contamination;
- designed for welding in a mixture of argon (75-95%) and carbon dioxide is not recommended for welding in pure carbon dioxide;
- applications - shipbuilding, robotics, heavy manufacturing, process piping and pressure vessels.
American researchers from Rice University (Rice University), Sandia National Laboratories (Sandia National Laboratories), and Brown University (Brown University) found that the nanowires 3-10 nm in diameter are able to unite with each other by applying a relatively low pressure and without heating ( the effect of "cold welding" nanowires ).
The discovery was made accidentally. The researchers gathered to determine the strength of gold nanowires in tension with special microscopes. They broke the pattern and measured the amount necessary to them, after which the ends of the wires come in contact with each other. To the surprise of scientists, the integrity of the nanowires has been restored, and at the same time, as shown by measuring its strength has not diminished.
Did not affect the characteristics of the samples and multiple lacerations and compound: nanowires were not destroyed at the site of the "cold welding", and the evaluation of the electrical conductivity of each time were similar.
The authors believe that the main factors in successful integration of nanowires are of single-crystal structure and orientation of the crystals coincide. According to one of the researchers, Chun Lo, this method of "cold welding" can be used to create arrays of nanowires of complex configuration.
February 25, 2010
Employees of the Siberian Federal University (SFU, Krasnoyarsk) have developed a unique electrode for underwater welding . The invention is already interested in the large industrial companies, and on the basis of the Krasnoyarsk Territory Emergency plan to create a center of underwater welding and cutting.
A young teacher Polytechnic Institute SFU Maxim Ustinovich used as the basis for universal mounting electrode of Soviet design, intended for dry welding. He covered it with varnish, able to withstand temperatures up to 300 degrees, and wrapped with a special film that looks like the food. The result is an electrode for underwater welding.
Tests are ongoing, but the results already suggest that domestic electrodes for underwater welding can be expensive to compete with the great American. Import the electrode is about 50 rubles apiece, and the Russian - 5 times cheaper. The quality they do not differ. According to Maxim Ustinovich process of underwater welding electrode is gently domestic and joints are obtained without any defects.
February 18, 2010
19-21 May 2010 in St. Petersburg on 14-th International Specialized Exhibition "Welding" . Venue - The Exhibition Complex "Fairgrounds" (St. Petersburg, Vasilevsky Island, Grand Avenue, 103, Hall 6, 7, 8 A, 8).
Organizer - JSC "Fairgrounds", 199106, St. Petersburg, Vasilevsky Island, Grand Avenue, 103, tel. (812) 321-26-31, fax (812) 321-27-22.
Main sections:
- Welding equipment, materials, supplies and technology;
- equipment and technology for thermal cutting of metals;
- equipment for surface treatment;
- automated control of welding processes;
- robotehnologicheskie systems, robots;
- devices, measurements, technical diagnostics, testing, data processing;
- components and materials for the production of electric welding equipment;
- non-destructive testing;
- protection of welders, the environment;
- training.
February 11, 2010
From 23 to 26 March 2010 will be held in Novosibirsk, the 12-th International specialized exhibition " Machinery. Metal. Welding. Metallurgy " . Venue - The International Exhibition Center «ITE Siberian Fair" (630049, Russia, Novosibirsk Red avenue, 220, Bldg. 10).
Organizer - OOO «ITE Siberian Fair", 630049, Russia, Novosibirsk Red avenue, 220, Bldg. 10, tel. +7 (383) 363-0063, tel. / Fax: +7 (383) 220-9747.
The main directions of the exhibition:
Engineering
- general and metallurgical engineering;
- robotics, automation, industrial automation;
- instrument;
- industrial electronics;
- non-destructive testing, technical diagnostics, laboratory control in the industry;
- instrumentation;
- quality control system;
- automation and enterprise management;
- component parts and components, technical equipment;
- nanotechnology and nanomaterials;
- software;
- finance, insurance, leasing and investment;
- subcontracting;
- environmental security companies;
- training;
- certification of products;
- innovation and investment projects;
- design and technological development;
- scientific and technical projects, literature and information;
- machine tools for metal cutting, turning, grinding, milling, processing of sheet metal;
- metal cutting technology, emulsions and suspensions for metal cutting machine tools;
- CNC machine tools;
- equipment and technology of heat treatment and coating of metals;
- equipment for metal forming;
- pneumatic and hydraulic equipment and technology;
- Tools - Hand, pipe, machine, electric, gasoline, hydraulic, pneumatic, abrasive, diamond, carbide, instrumentation, precision;
- production technologies and recovery tool;
- forging and pressing equipment;
- surface treatments, coatings, corrosion protection;
- Recycling scrap metal, household and industrial waste;
- modernization of equipment
- and other sections;
- Welding equipment, materials and technologies;
- equipment and cutting technology, heat treatment, welding and soldering;
- material for surfacing and brazing;
- power supplies, control systems for welding equipment;
- automation of welding processes, software products;
- Equipment NDT of welded joints;
- personal protective equipment and clothing;
- occupational safety;
- ecological safety of production;
- training and certification of welders;
- information and scientific support for welding;
- certification of equipment for welding;
- Equipment for weighing, packaging and labeling of metal products;
- cast iron, various kinds of steel;
- refractories, foundry equipment and supplies;
- coke production;
- sheet and long products;
- wires, bearings, wire mesh, hardware, foil, tape, strip;
- metal products and non-ferrous metals;
- production of titanium;
- babbits (antifriction bearings) on the basis of lead, tin, copper;
- production of powder metallurgy;
- training
- and other sections.
One of the novelties of 2009 the German company EWM , has recently appeared in Russia - inverter welding machines alpha Q 551.
Characteristics of welding machine EWM alpha Q 551:
- Support three modes of welding - semi-automatic welding (MIG / MAG), TIG-welding with contact ignition of the arc (TIG LIFT), manual metal arc welding (MMA);
- function of cold Arc (welding with low heat) and the force Arc (stabilization of the arc);
- efficient cooling system;
- Welding current range - from 5 to 550 A;
- duty cycle at 40 ° C
- 60% duty cycle - 550 A (MIG / MAG, TIG, MMA);
- 100% duty cycle - 420 A (MIG / MAG, TIG, MMA);
- allowable limit voltage - 3 x 400 V (-25% - 20%);
- dimensions (length x width x height), mm - 1100 x 455 x 1000;
- weight - 125 kg.
Canceled exhibition project "RUSBUILD" with the 8th international exhibition of metal in construction and architecture "METALBUILD-2010" , which is scheduled to hold on 16-19 February 2010 in Moscow at the Exhibition Center "Crocus Expo" (third pavilion, Hall 13) .
Site News / February 2010
February 23, 2010
New articles in the "Cutting Equipment":
February 6, 2010
Added material about plasma cutters in the "Cutting Equipment". The information about the structure of the plasma cutter (cutting torches), and their main types.
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