摘要:
The invention relates to an electric arc furnace which comprises a safety device (3) and an earthed peripheral device. The invention is characterised in that an earth cable (4) is provided to the peripheral device of said arc furnace (2), an ammeter (6) is provided for measuring the current across the earth cable (4), and in that a circuit breaker (8) is provided in said earth cable (4) which has a tripping time of less than 100 ms.
摘要:
A method for monitoring wear of an electrode in an electric arc furnace comprising the steps of:
taking a digital picture of the still incandescent tip of the electrode; applying a numerical edge detection filter to the digital picture so as to obtain a filtered image wherein abrupt changes in light intensity are represented as contour lines; and analysing the contour lines to determine the shape of the electrode tip and the presence of cracks.
摘要:
An induction plasma furnace comprises an inductor (1) housing a melting pot (2) the side wall of which consists of two vertically oriented sections (3) made of an electrically conductive material and electrically insulated from each other. At least one of the sections (3) of the pot (2) is connected in series with the electrical circuit of an electric arc plasmatron (7), said circuit being closed through the melt (4), so that the current direction of the arc (10) of the plasmatron (7) is the same or opposite to the current direction in the section (3) of the pot (2).
摘要:
Um schlackenfreies Abstechen von Metallschmelzen, insbesondere Stahlschmelzen aus kippbaren Herdschmelzöfen mit teilweise wassergekühlten Wandflächen zu ermöglichen, wird vorgeschlagen, dass bei einem Oberflächenverhältnis von wassergekühlter Wandfläche/feuerfester Wandfläche von 6:1 bis 9:1 der Schmelzofen während des Abstechens lediglich von 0° bis maximal +15° bzw. von 0° bis maximal -6° gekippt wird.