摘要:
The invention relates to a method for casting steel having a chromium content of more than 15 wt.-%, which is characterized in that the steel is cast in a horizontal strip casting system (1) comprising a melting furnace (2), foundry ladle (3) and conveyor belt (5) for receiving and for cooling a liquid steel strip flowing from the foundry ladle (3).
摘要:
A pouring conveyor (11) in the form of a continuous loop receives sand molds (M, M') on pallets (12) or other mold carriers and conveys the empty molds to a pouring station (80) wherein molten material is deposited therein to form castings. Each mold (M, M') is provided with a supportive weight and jacket (14) before pouring. Thereafter, the molds (M, M') with the weight and jacket (14) surrounding them, pass through a primary cooling line, at the end of which molds and weight and jacket are separated in a jacket transfer station. The weighted jacket is removed and transferred to an on-coming freshly made mold while the castings pass through a secondary cooling zone for further cooling and subsequently discharged said conveyor (11). The process allows for a substantially smaller number of weight jacket combinations and floor space than previously known molding processes.
摘要:
A method for reducing dust emissions in a metal or slag casting apparatus, as well as a metal or slag casting apparatus allowing reducing dust emissions, comprising an endless conveyor having a plurality of casting moulds with upper open tops and which endless conveyor is arranged to move said casting moulds in a first section from a casting station to a discharge station and in a second section back to the casting station, the method comprising (a) providing a casing forming a bottomless box over at least part of the first section of the endless conveyor, (b) injecting within said casing a gas on the surface of the mould with an angle sufficient to blow off loose, solid particles, such as graphite flakes, formed at the surface of the metal, during early stages of the cooling down and to start the solidification of a superficial layer of metal or slag, (c) extracting the gas and the solid particles by suction from within said casing.
摘要:
The invention relates to a device for removing pigs from moulds (10) comprising a conveying means (11) for the moulds (10) and a restraining means (12) for the pigs located in the moulds (10). The invention is distinguished by the fact that the restraining means (12) is movable, at least in certain portions, substantially along a conveying path of the conveying means (11), wherein different speeds can be set between the restraining means (12) and the conveying means (11).
摘要:
The invention relates to a method and a device for producing metal pieces with a predefined size from the liquid phase, more particularly pieces made of ferro-alloys or non-ferrous metals, comprising a strip casting facility that produces a continuos metal strip having a predetermined thickness and a breaking facility that fragments the strip into pieces. During casting and solidification, a pattern of breaking points is engraved on the surface of the strip using an embossing roller (1), said pattern determining the predefined optimal size of the pieces after the band has been fragmented.
摘要:
A pouring conveyor (11) in the form of a continuous loop receives sand molds (M, M') on pallets (12) or other mold carriers and conveys the empty molds to a pouring station (80) wherein molten material is deposited therein to form castings. Each mold (M, M') is provided with a supportive weight and jacket (14) before pouring. Thereafter, the molds (M, M') with the weight and jacket (14) surrounding them, pass through a primary cooling line, at the end of which molds and weight and jacket are separated in a jacket transfer station. The weighted jacket is removed and transferred to an on-coming freshly made mold while the castings pass through a secondary cooling zone for further cooling and subsequently discharged said conveyor (11). The process allows for a substantially smaller number of weight jacket combinations and floor space than previously known molding processes.
摘要:
Continuous casting of discrete solid shapes (33) from a molten material (11) using modified continuous casting machines and processes are disclosed. In a conventional twin belt continuous caster, for example, forming means (27) such as dividers are employed on the upper belt (14) to define a mold cavity in the casting region of the machine. Different size and shape forming means (27) may be used to provide a variety of cast products.