The manufacturing of composite materials by high energy concentration method is based on ultra high speed collision of metal plates to be bonded. By mens of mathematical modelling and experiments, good bond quality is achievable. We analyzed in detail welded plates of low-carbon steel–rust resistant austenite steel, low-carbon steel – Ta, low-carbon steel – Ti, Al – Ti, Al – Mo, Cu – W, Cu – Al, brass – stainless steel, and the triple layers: low-carbon steel – Ti - Al and low-carbon steel – Ti – Zr, which were fabricated through explosive welding.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 8568086715871The present technology of production of fuses in ETI Elektroelement and the action thereof are adapted to the existing ecologically harmful low melting alloy of SnCd20, which ought to be replaced by one or more ecologically safe alloys with technological and application properties as similar as possible to the existing ones. We have found that the stated problems can be solved by low melting alloy of Sn, Bi and Sb: ETI-Sn-Bi-Sb, which is ecologically safe, and by its technical and physical properties corresponds to the requirements of the use for fusible elements of low voltage fuses.
F.32 International patent
COBISS.SI-ID: 5727675732796Die casting dies for casting of Al alloys fail because of a great number of different and simultaneously operating factors. Die design, material selection, and thermal stress fatigue due to the cyclic working process, as well as to low and inhomogeneous initial die temperature contribute to the failures and cracks formation on/in dies. Intensity and homogeneity of the temperature fields on the working surface of the testing die were checked through thermographic measurements. Failures and cracks on the working surface of the dies were analysed by the NDT metallographic examination methods.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 9839131744031The possibility of 0,006 to 0,20 mm thick foil production by the continuous strip casting process of Al-Fe-Si type alloys using TRC was investigated. The goal of the project was the production of foils with equal or better mechanical and technological properties in comparison with the conventional produced foils using DC casting. Optimal properties of 0,006 to 0,02 mm thick foils result from besides the several TRC casting conditions with cold rolling of 6 mm thick CC strip using two intermediate annealing at 540 and 400°C. The thicker foils need only one intermediate annealing at 310°C.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 817247673962Firm Kolektor has in his production program comutators, which are produced from profiled Cu ribbons. Within the cooperation with the firm we developed a continuous deposition of a solder from a melt on a Cu ribbons. This procedure enables a selective continuous deposition of a solder on a different shapes of Cu ribbons without additional turning and without galvanic deposition of solder. Solder is after deposit only on a required spots.
F.33 Slovenian patent
COBISS.SI-ID: 634463525663Die casting dies for casting of Al alloys fail because of a great number of different and simultaneously operating factors. Die design, material selection, and thermal stress fatigue due to the cyclic working process, as well as to low and inhomogeneous initial die temperature contribute to the failures and cracks formation on/in dies. Intensity and homogeneity of the temperature fields on the working surface of the testing die were checked through thermographic measurements. Failures and cracks on the working surface of the dies were analysed by the NDT metallographic examination methods.
F.10 Improvements to an existing technological process or technology
The possibility of 0,006 to 0,20 mm thick foil production by the continuous strip casting process of Al-Fe-Si type alloys using TRC was investigated. The goal of the project was the production of foils with equal or better mechanical and technological properties in comparison with the conventional produced foils using DC casting. Optimal properties of 0,006 to 0,02 mm thick foils result from besides the several TRC casting conditions with cold rolling of 6 mm thick CC strip using two intermediate annealing at 540 and 400°C. The thicker foils need only one intermediate annealing at 310°C.
F.09 Development of a new technological process or technology
The present technology of production of fuses in ETI Elektroelement and the action thereof are adapted to the existing ecologically harmful low melting alloy of SnCd20, which ought to be replaced by one or more ecologically safe alloys with technological and application properties as similar as possible to the existing ones. We have found that the stated problems can be solved by low melting alloy of Sn, Bi and Sb: ETI-Sn-Bi-Sb, which is ecologically safe, and by its technical and physical properties corresponds to the requirements of the use for fusible elements of low voltage fuses.
F.32 International patent
The manufacturing of composite materials by high energy concentration method is based on ultra high speed collision of metal plates to be bonded. By mens of mathematical modelling and experiments, good bond quality is achievable. We analyzed in detail welded plates of low-carbon steel–rust resistant austenite steel, low-carbon steel – Ta, low-carbon steel – Ti, Al – Ti, Al – Mo, Cu – W, Cu – Al, brass – stainless steel, and the triple layers: low-carbon steel – Ti - Al and low-carbon steel – Ti – Zr, which were fabricated through explosive welding.
F.09 Development of a new technological process or technology
Firm Kolektor has in his production program comutators, which are produced from profiled Cu ribbons. Within the cooperation with the firm we developed a continuous deposition of a solder from a melt on a Cu ribbons. This procedure enables a selective continuous deposition of a solder on a different shapes of Cu ribbons without additional turning and without galvanic deposition of solder. Solder is after deposit only on a required spots.
F.33 Slovenian patent