TPT March 2014

Technology News

Welding coatings CONDOROIL's Condorlube S700 has been designed for controlling of electrowelded carbon steel tubes for refrigeration. Special additives give the product a good lubricating power and antioxidising capacities. The solution is kept clear, and allows the performance of pneumatic pressure tests at 50 atmospheres, where it is possible to evaluate the efficiency of the treatment on the spiral tube, making eventual air leaks from the tube easily visible to the machine operator. Condorlube S700 does not form any foam on the tank surface, it has an excellent bactericide power, does not contain any mineral oils and is totally hydrosoluble.

Cutting and sawing MOSCOW-based Vniimetmash, or Russian scientific and research centre of metallurgy engineering, is a major manufacturer of tube cutting and sawing tools in Eastern Europe.

of the rotating blade and tube allows the tool to be used for slicing round billets with diameters up to 500mm. Several other types of saw and shears have been developed at Vniimetmash, including flying shears for cold cutting of steel tubes and steel profiles in continuous casting tube welding mills and bending units. They can cut tubes with hardness up to 500 MPa and diameter of 110mm at a speed of 120m/ min. The accumulated discrepancy of cuts on pieces 4m or 12m long is ±1mm. Vniimetmash also makes shears for cold rolling mills that cut tubes without chips and shavings. They work on tubes with diameters from 10 to 90mm and with wall thickness of 0.8-5mm. The shears are used on ferritic, austenitic heat resistant steel and martensitic stainless steel with additives of nickel and titanium with yield point of 1,000 MPa. Vniimetmash – Russia Email: dobrovolskiy@vniimetmash.ru Website: www.vniimetmash.ru

Since 1955, its designers have conceived and implemented hundreds of different types of original, and in many cases unique, pieces of steel melting machines, cast and rolling units and presses of different capacity. Vniimetmash has developed several types of high-speed rotary saw for hot cutting of thick walled tubes and pipes. The saw can slice square steel tube with a side of 350mm within 0.8 seconds without a trace of cutting on its butt. These saws have already been working for a number of years at several metallurgy plants in Russia and abroad. According to the designers who made the saws, the high speed of cutting is provided by the original shape of the teeth of the working blade, its hardness, and the angle at which the disc hits the tube billet. The very short time of the contact

Condoroil Chemical Srl – Italy info@condoroil.it www.condoroil.it

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Combilift Ltd Gallinagh Co. Monaghan Ireland Tel: +353 47 80500 UK: 07870 976 758 E-mail: info@combilift.com

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M arch 2014