When you are offered ANYTHING Academy of Sciences of Belarus, you know, it’s true. That’s what prepare for the introduction and for sale LICENSES Physico-Technical Institute, Academy of Sciences BSSR.
STRIP IRON. THIS IS NOT PURELY-knotted plastic material — a great advertising plasticity.
Obtained hydrodynamic extrusion ductile cast iron with low heat — «this to nine degrees. You even more surprised that the size of the profile is possible to be within a few hundredths of a millimeter. Cast iron behaves in this fashion better composite materials — it is durable.
After hydrodynamic procedure increases the wear resistance of cast iron and more than half, it becomes harder and three — four times stronger.
Hydrodynamic extrusion b ‘Institute get cast-iron pipes, cups cylinder engines, products from tool steel — drills, reamers.
Extruded tool as worn in the 1,3-S times slower than normal. In the words of the Laboratory, «This is to some extent a new metal»
Direction. » crystallization of alloys i PTI BSSR get cast reinforced composite materials. The reinforcing fibers grow directly from the melt, and this may be «whiskers» of refractory metals or intermetallic compounds *. The eutectic alloy zakristallizuyut you right in the finished product, it does not require little or no machining.
Continuous casting and casting with a combination of pressing and rolling and the institute makes aluminum rods, bars, profiles and sheets, hardened dies * We boron or chrome-nickel wire. The specific strength of these materials is 1.6 times higher than that of titanium alloy.
Academy of Sciences of the Byelorussian SSR KV Gorev directs research in VVM properties of new alloys. Created chromium-manganese, chro-momargantsealyuminievye, margantsealyuminievye steel, nickel alloys have characteristics. For example, chromium-manganese steel does not corrode in sea water and some acids hromomargantse-alyumiiieaaya-heat resistance.
The Institute offers electromagnetic, electro-hydraulic hammers and punching (see. IR. 6G 79, p. 12. «The idea of an underwater lightning»). The rate of deformation of the workpiece — up to 300 m, pressure — up to 5 kgf cm LLC ?. why at the grain boundaries and increasing temperature dramatically increases the plasticity of metal, metal flows into and interfacing 0,2-0.1 mm radius.
One blow — and receive a quarter of a meter depth CAP The usual way to do this would require several transitions, there are a few punches and dies (photo 2) Here — only the matrix, and the role of the punch carries water. Matrix epoxy wood for occasional stamping — even ice only if required to forge a large batch of products — from ordinary structural steel. The cost of equipment and eight — ten times less than the traditional technology Impulse installation PTI Fit the metal caps on porcelain insulators, will be coated with the metal inner surface of the fragile vessels of glass and plastic district, of course, is curved, the shape, stretched, cut down on a path different blanks
STILL HARDENING matrices blanking dies at many enterprises is time consuming Since the heating furnace billet warp «they then» adjusted «by hand. According to the procedure PTI matrix may be a few seconds to temper the hardness of 60-62 Rockwell. Treatment of affected only a thin inner sing, and all around is a viscous, well-quenching shock steel (photo 5, 6). Nothing cunning} frequency heating is well known! But the fact that the institute made a self-regulating process. No matter how complex any hole and the matrix metal is everywhere and it is heated to the same temperature and the same tone. That uneven temperature field I «false contours forced inventors otmazyvatsya by heating using an electromagnetic field. Now this obstacle is removed: the procedure PTI matrix stamps do in factories, without allowances, and in addition, instead of using a simple steel slozhnolegirovannoj example U8A, which is several times cheaper.
Working elements of complex multianvil stamps — without manual adjustment! Straight from the EDM machine detail of stamps sent to the assembly of such stamps frames in half the usual durable and work where produce low power electric cars — motor starters, generators, etc.
New stamps developed in the laboratory of Electrophysics PTI.
The three main rolling method — longitudinal, transverse and vintovoy- Physico-Technical Institute proposes to add a fourth — the cross-wedge (photos 3, 4) is rolled on such machine parts from bar stock did not differ in the accuracy of the machined on turning machines This labor-intensive industries decreased ten times and utilization of metal nonincreasing.
The preform rolls between the movable and fixed plates. Ribs on the plates in the form of a wedge, causes the metal to flow from the middle to the ends of the blank form its profile. Item ready for three or four seconds. It can be ball studs, shafts, axles, harrow teeth and digging, plungers and cones, screws, pin, punches … Durability rolled parts. increases by 25 30 per cent compared with chiselled and fatigue strength — twice. And many items are directly laminated without further processing !, entering the assembly shops. Costs of instruments is sometimes reduced tenfold. Halves the number depreciation costs of equipment, utilization of metal on some operations is 9870 instead of 40-60%, as it was when the items sharpened.
FROM THE BEGINNING 6C-ies in the institute are exploring the rotary cutting, dramatically accelerating processing and solid or viscous metal crystals. The first experiments were conducted under the leadership of BSSR E G. Konovalov, the creator of the theory of forming surfaces rotating tools — ball and roller rolling and knurled It was a natural transition from these tools, from plastic deformation in metal cutting rotating cup cutters. * The cup is rotated the frictional force between it and the rotating parts. Because of this the average temperature of the tool cutting edge is reduced by 30-60% as compared to processing by conventional cutters, tool life increased 10-50 times. Cutting speed of structural steels can reach 600 m / min. cast iron — 800 m / min, non-ferrous metals — more than 1000 m / min.
Rotary cutting makes it possible to raise the efficiency of electric cars is equal to 95-98%, even at 0.3-1 percent. The fact that the machining of the rotors and stators new cutters galling possible to isolate that is not a short circuit between the plates have high core losses due to eddy currents.
Completely new way of grinding and polishing using abrasive particles suspended in a magnetic field. «Magnetic bunch» has a number of advantages over any known. Thus, it is possible to smoothly change the rigidity in a rather wide range, thereby achieving the optimum in relation to the form processing and the workpiece. For example, without any complications can be polished (or vice versa to make a matte) 0.05-3 mm thick sheet for a second fitting detalku polish, so much so that none of controller not prideretsya. The allowance will be removed evenly, form parts remain completely.
Magnetic abrasive grinding and polishing amenable to any materials including viscous such as aluminum, titanium, copper, plastic. Removing material falls between the abrasive particles and the processing is always being «uninhabited» tool. From the details of good heat dissipation, so that the risk of burns is excluded. A removal rate of chips: a few tens of seconds, the height of asperities decreases from 40 to 0.8 microns. Experts believe that a significant part of the finishing operations can be converted to conventional processing abrasive disks and tapes on magnetic abrasive. This is particularly advantageous when the parts have a complicated shape.