Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
  • B22D27/08—Shaking, vibrating, or turning of moulds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
  • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D19/00—Casting in, on, or around objects which form part of the product
  • B22D19/0009—Cylinders, pistons
  • B22D19/0027—Cylinders, pistons pistons

Definitions

• the invention relates to a method for casting a piston for an internal combustion engine, as well as an associated
• rotationally symmetrical components such as pistons for internal combustion engines, are horizontal and stationary
• CH 135526 A relates to a method and a mold for casting composite blocks, in which during casting the angular position of the mold is changed.
• the invention has for its object to provide a casting method and an associated tool that is improved over the known approaches, and to combine at least some of the advantages of both the horizontal and the standing casting.
• Tool sections after filling the casting cavity or at least towards the end of this process and before solidification rotated by at least 45 degrees about a horizontal axis or tilted so that the axis of rotation of the piston to be cast moves in the direction of the vertical and this preferably at least approaches.
• the invention thus consists essentially in the
• Effort can be removed or edited anyway and thus removed.
• the invention makes use of the advantages of the upright casting method insofar as the feeding behavior is better here. This is essentially due to the fact that a largely
• the improved feed is expected to reduce the porosity in the molded component.
• the casting cavity is tilted as a whole, so that the axis of rotation of the component to be cast, as described, changes its orientation.
• the tool can be referred to as a mold.
• Tilting movement in other words, the position of the axis of rotation of the component during filling, and / or the tilt angle and / or the position of the axis of rotation of the component during solidification are adjustable.
• Tilt angle can advantageously be influenced individually the filling behavior and / or the solidification behavior.
• the axis of rotation of the piston to be cast be largely aligned horizontally during filling. For the same reasons it offers advantages when the
• Rotation axis of the piston to be cast during solidification is largely aligned vertically.
• pouring piston is filled.
• the mold cavity has at least one recess which is located in an upright casting manner in an upper, preferably at the highest region of the mold cavity. This forms in this area after the
• the advantages of the upright casting method can be used particularly extensively by arranging a feeder after tilting the casting cavity in an upper region, in particular at a location other than the sprue.
• the method according to the invention unfolds its advantages in a particular way when the component to be cast is cast with at least one insert, such as a ring carrier and / or a core for a cooling channel of a piston for an internal combustion engine.
• at least one insert such as a ring carrier and / or a core for a cooling channel of a piston for an internal combustion engine.
• Casting tools substantially correspond to those of the previously described, preferred method. It should also be noted that the individual features of all the methods described herein are applicable to the device and vice versa.
• a feeder 16 is present. During filling, the feeder is located on one side of the workpiece, after filling, and for solidification of the workpiece but at the highest
• Mold cavity is located.
• the gate 14 is preferably provided at a location other than the feeder 16, and preferably separately therefrom. At the highest point when pouring the mold cavity is preferably a recess 18 in the
• Mold cavity provided which forms a kind of dirt bag, are flushed to the impurities. Here they can be easily removed during subsequent processing.
• the recess 18 may be provided at an arbitrary position along the axis of rotation A of the piston 10.
• the symmetry of the piston 10 to be produced in the course of the solidification process is utilized in that the mold cavity defining the later piston, as shown in the right-hand area of the figure, after the filling of the
• molten material is tilted such that the axis of rotation of the component to be produced largely
• the feeder 16 is oriented vertically. In the embodiment shown, the feeder 16 is in an upper region in this state. In this orientation is for the
• This floor area can therefore by the procedure of the invention as finished cast and not more
• nachzubesder floor area are provided with appropriate contours.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pistons, Piston Rings, And Cylinders (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (2)

Family

ID=48463939

Family Applications (1)

Country Status (11)

Citations (2)

Family Cites Families (9)

• 2012
  • 2012-04-27 DE DE201210207090 patent/DE102012207090A1/de not_active Ceased
• 2013
  • 2013-04-26 BR BR112014026793A patent/BR112014026793B1/pt not_active IP Right Cessation
  • 2013-04-26 US US14/397,267 patent/US20150122448A1/en not_active Abandoned
  • 2013-04-26 CN CN201380022396.3A patent/CN104271288B/zh not_active Expired - Fee Related
  • 2013-04-26 PL PL13723434T patent/PL2841223T3/pl unknown
  • 2013-04-26 EP EP13723434.0A patent/EP2841223B1/de not_active Not-in-force
  • 2013-04-26 ES ES13723434.0T patent/ES2678621T3/es active Active
  • 2013-04-26 MX MX2014013032A patent/MX364761B/es active IP Right Grant
  • 2013-04-26 IN IN2342KON2014 patent/IN2014KN02342A/en unknown
  • 2013-04-26 HU HUE13723434A patent/HUE037819T2/hu unknown
  • 2013-04-26 WO PCT/EP2013/058725 patent/WO2013160447A2/de not_active Ceased

Patent Citations (2)

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