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Metal Working 

Latvia, Riga

+371 677 90 653 +371 678 86 921 info@globalsteelservice.com Daugavgrīvas 93, Rīga LV-1007,Latvia

+ 48 535 201 660 + 48 588 810 035 info@globalsteelservice.com Ul. Doki 1, Hala 35, 80-958, Gdansk, Poland

Types of welding:      - submerged arc welding - semi-automatic - argon - spot   Advantages:                - high technological effectiveness of the process -  possibility of different grades materials with different mechanical and physical properties - possibility to weld even heterogeneous materials (for example steel and aluminium alloy)   Defectoscopy:            - ultrasound   Global Steel Service has at its disposal:   Semi-automatic welding is a welding process, when electrode wire is supplied to the welding area with permanent speed simultaneously with carbon dioxide, argon or other gas providing protection for molten or heated electrode and basic metals from harmful influence of ambient air. Here, Protective gas is supplied from a container through the reducing gear. Besides the fact, that semi-automatic welding provides high weld quality, it has the following benefits: arc ignition is considerably facilitated, convenience and speed of work dramatically increases - a welder does not need to change electrodes and to clean weld slag.    Argon welding allows conducting the complete range of welding works with such metals as aluminium, stainless steel, cast-iron, titan, copper, silumin, duralumin, as well as nonferrous and ferrous metals. Argon welding is also used for different alloys. Welding filler is chosen to be by its composition close to the metal a part is made from. A weld acquired as a result of argon arch welding makes one single with the welded parts that allows providing durability, airtightness, and durability of the future product.    Spot welding – during spot welding the parts are squeezed in the electrodes of a welding machine or special welding ticks. After this, heavy current is applied to the electrodes; the metal parts in the place of their contact are heated to the melting temperature. Then current application is interrupted and "cogging" is started by means of increase of electrodes compression force. Metal is crystallized at the compressed electrodes and the weld appears.   Submerged arc welding - the use of a special protective substance during welding called welding flux allowed dramatically increase both quality and productivity of welding application on the whole. Welding flux is a special substance of quite complex chemical composition that can be physically represented as powder, liquid paste or special granular composition. Submerged arc welding allows to weld metal upto 150 mm thick.   The production is equipped with modern hi-tech equipment for technical control that provides high accuracy and quality of the processed parts.

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