The paper presents a mathematic model of static and dynamic characteristics for casting machine. This machine has a hydraulic action for the casting chamber (her closing and introducing of molten alloy). This action is ...

To increase the resistance to wear and corrosion of the surface layers made from steel with 0.45% C, multilayer deposition was tested by injection of powder with chemical composition of 8.9% Cr, 4.5% Fe, 5.1% B, 2, 4% ...

In the paper are presented elements of drawing theory and technology of the high mechanical strength wires, when the auger die is located in the maximum of the waves oscillation and it is activated on drawing direction. ...

Multilayer cladding by injection of powder with 8.9% Cr, 4.5% Fe, 5.1% B, 2.4% Al, 0.6% Cu, Ni rest as chemical composition, in melted bath by a continuous wave CO2laser connected to x-y-z coordinate table was tested in ...

In the paper it is presented a study run on a five-month-period regarding the changes in the mechanical characteristics due to natural ageing for a drawing steel, cold rolled, unalloyed with 0.04% C. The ageing tendency ...

The goal of this paper is to create metallic materials with superior functional performances. The layer obtained by electrode vibrator method must have a very good adherence on part surface and a high chemical and thermal ...

In this paper were analyzed experimental graphics for quenching cooling curves of oil at 20°C,40°C,60°C, 80°C and carboxymethyl cellulose (CMC) 1,5% solution in water at the same temperatures. Velocity cooling was studied ...

The effect of chromate and molybdate on the corrosion inhibition of copper and steel has been investigated in two eutectics solution at room temperature. We used stationary electrochemical methods and optical microscopy ...

The experimental research was made on superficial layers laid-down through electrical sparking on the steel carbon OLC 45 probes, the used electrode being made from a corrosion resistant material (Copper). The probes ...

Two new types of bifunctional chelating ion exchangers on the basis of ethylacrylate acrylonitrile: divinylbenzene copolymers with hydroxamic acid and amidoxime groups have been evaluated for Cu(II), Co(II) and Cr(III)ions ...