US20110309115A1 - Direct side pour riser sleeve - Google Patents
Direct side pour riser sleeve Download PDFInfo
- Publication number
- US20110309115A1 US20110309115A1 US12/818,699 US81869910A US2011309115A1 US 20110309115 A1 US20110309115 A1 US 20110309115A1 US 81869910 A US81869910 A US 81869910A US 2011309115 A1 US2011309115 A1 US 2011309115A1
- Authority
- US
- United States
- Prior art keywords
- riser sleeve
- exterior side
- pouring
- contact hole
- molten metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
Definitions
- Embodiments described herein relate to a direct side pour riser sleeve for casting metal.
- Molten metal is cast in molds to form various industrial and engineered castings for many applications, such as engine heads and engine blocks, as well as other components.
- Metal castings are often formed of iron, aluminum and other metals and alloys.
- the metal is melted and transferred to a holding furnace. From the holding furnace, the molten metal is transferred to a pouring basin.
- the pouring basin typically funnels the metal through a gating system that is designed to avoid turbulence and splashing as the molten metal enters the mold cavity. Turbulence and splashing of the molten metal can cause porosity in the cast part, and impurities and oxides may be entrained in the molten metal as it flows through the gating system.
- Conventional gating systems need multiple components, including sprues, runners and ingates that are used to cast the metal.
- a conventional direct pour casting system reduces the components for casting metal as compared to a gating system.
- the pouring basin funnels the metal to a riser sleeve that supplies the molten metal to the cavity in the casting mold.
- the riser sleeve supports a ceramic foam filter at a top surface of the riser sleeve where the pouring basin introduces the molten metal.
- the molten metal flows through the filter in a smooth, substantially laminar flow into the mold cavity.
- the filter also traps non-metallic inclusions in the liquid metal.
- the molten metal exits the riser sleeve at a bottom surface of the riser sleeve.
- a direct side pour riser sleeve for receiving molten metal from a pouring basin includes a generally cylindrical body having an exterior side surface and an interior surface. Both of the surfaces generally circumscribe a centerline axis.
- the body has a top surface configured to receive the pouring basin and a bottom surface configured to be received in the drag portion of the mold.
- the riser sleeve also includes a pouring passage extending from the top surface and that is defined by the interior surface. The pouring passage is configured to receive the molten metal from the pouring basin.
- a taper portion is located on the exterior side surface and has a decreasing diameter towards the bottom surface.
- Another direct side pour riser sleeve for receiving molten metal from a pouring basin includes a generally cylindrical body having an exterior side surface and an interior surface, where both surfaces generally circumscribe a centerline axis.
- the body has a top surface configured to receive the pouring basin and a bottom surface opposite of the top surface.
- a pouring passage extends from the top surface and is defined by the interior surface.
- the pouring passage is configured to receive the molten metal from the pouring basin.
- At least one contact hole is located through the body from the exterior side surface to the interior surface. The contact hole is in fluid communication with the pouring passage and the casting cavity. The molten metal flows in a direction generally transverse to the centerline axis at the contact hole.
- the riser sleeve in another direct side pour riser sleeve for receiving molten metal from a pouring basin, includes a body having a top surface configured to receive the pouring basin, and a bottom surface opposite of the top surface.
- the body has an exterior side surface and an interior surface opposite the exterior side surface.
- An upper chamber extends from the top surface and is defined by the interior surface.
- the upper chamber is configured for receiving the molten metal from the pouring basin.
- a filter is in downstream fluid communication with the upper chamber, and a lower chamber is in downstream fluid communication with the filter.
- the lower chamber is also defined by the interior surface.
- FIG. 1 is a front view and a top view of the direct side pour riser sleeve.
- FIG. 2 is an elevation view of the direct side pour riser sleeve from the direction indicated by A-A in FIG. 1 .
- FIG. 3 is a schematic of the direct side pour riser sleeve, a pouring basin and a casting.
- a direct side pour riser sleeve (herein “riser sleeve”) is indicated generally at 10 and includes a generally cylindrical insulated body 12 having an exterior side surface 14 , a top surface 16 and a bottom surface 18 .
- the top surface 16 is generally annular and defines an inlet 20 .
- the top surface 16 may have an outer diameter of about 4.88-inches, however other diameters are possible.
- the inlet 20 is in fluid communication with a pouring passage 22 defined by an interior surface 24 . Both the exterior side surface 14 and the interior surface 24 generally circumscribe a centerline axis CL.
- the pouring passage 22 includes an upper chamber 26 and a lower chamber 28 .
- the upper chamber may have a height of about 3-inches and a diameter of about 4-inches at the top surface 16 , however other dimensions are possible. Further, the upper chamber 26 may have a decreasing diameter from the top surface 18 .
- the lower chamber 28 may have a height of about 2.75-inches and a diameter of about 4-inches at the bottom surface 18 , however other dimensions are possible.
- the filter 32 is seated in the pouring passage 22 between the upper chamber 26 and the lower chamber 28 .
- the filter 32 may have a thickness of about 0.75-inches, however other thicknesses are possible.
- the connecting portion 30 may have a length of about 0.5-inches, however other lengths are possible.
- a pouring basin 34 is selectively attachable to the top surface 16 of the riser sleeve 10 to permit the fluid communication of molten metal from the pouring basin to the upper chamber 26 . From the upper chamber 26 , the molten metal flows through the filter 32 .
- the filter 32 may be a ceramic foam filter, or any other filter suitable for filtering non-metallic inclusions and for regulating generally laminar flow of the molten metal.
- At least one contact hole 36 is located through the body 12 generally transversely to the centerline axis CL, and extends from the exterior side surface 14 to the interior surface 24 at the lower chamber 28 .
- the contact hole 36 may extend from the bottom surface 18 to a top surface 38 of the lower chamber 28 , for example about 2.75-inches, however other lengths are possible.
- two contact holes 36 are provided in the body 12 , however any number of contact holes is possible.
- the multiple contact holes 36 may extend from the bottom surface 18 , or alternatively may not extend from the bottom surface.
- the contact holes 36 may be disposed in equal or non-equal radial segments around the exterior side surface 14 , and the contact holes 36 may have similar or non-similar shapes.
- the molten metal flows out of the body 12 through the at least one contact hole 36 in a direction generally transverse to the centerline axis.
- the contact holes 36 allow for direct feeding to a casting cavity 40 .
- a sprue sleeve 42 may be used to feed the metal from the contact holes to the casting cavity 40 .
- the direct feeding of the molten metal through the contact holes 36 reduces the amount of metal needed for casting, and may eliminate the need for a sprue, runner and possibly one or more risers. Further, where multiple casting cavities 40 are used with multiple contact holes 36 in a single riser sleeve 10 , there may be increased metal feeding per metal poured. Further still, using a single riser sleeve 10 to feed multiple casting cavities 40 allows space in the mold to be freed-up so that a mold may be used more efficiently.
- the bottom surface 18 of the riser sleeve 10 is generally annular and defines a mold outlet 44 .
- the exterior side surface 14 includes a lower taper portion 46 , where the exterior surface of the body 12 has a decreasing diameter vertically towards the bottom surface 18 .
- the diameter of the bottom surface 18 at the taper portion 46 may be about 5.12-inches, however other dimensions are possible.
- the taper portion 46 and the bottom surface 18 are configured to be set into and to sealingly engage a drag portion of the mold 48 , where the drag portion also has a taper.
- the taper portion 46 secures the riser sleeve 10 in place as the riser sleeve moves along the assembly line in an automated horizontal molding machine, or any other molding machine.
- the taper portion 46 may have a length of about 1-inch, and the remainder of the exterior side surface 14 may have a length of about 6-inches, however other lengths are possible.
- the filter 32 is located generally centrally along the length of the body 12 , or about 3-inches from the top surface 16 and about 3.25-inches from the bottom surface 18 , although other distances are possible. With the filter 32 disposed in the pouring passage 22 between the upper chamber 26 and the lower chamber 28 , the center of gravity of the riser sleeve 10 is lower than a conventional riser sleeve, where the filter is typically located at the top surface 16 of the riser sleeve. With the filter 32 located closer to the bottom surface 18 and closer to the casting cavity 40 , the pressure may be reduced as the metal enters the casting cavity, and there may be a reduction in slag or dross regeneration.
- the riser sleeve 10 may provide efficiencies in one or more simultaneous castings, may replace or be used in conjunction with components of a gating system, and sits more securely in the casting machine Additionally, the riser sleeve 10 may be accepted on existing patterns with little to no modification of the sleeve or the pattern.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
- Embodiments described herein relate to a direct side pour riser sleeve for casting metal.
- Molten metal is cast in molds to form various industrial and engineered castings for many applications, such as engine heads and engine blocks, as well as other components. Metal castings are often formed of iron, aluminum and other metals and alloys. To manufacture the components, the metal is melted and transferred to a holding furnace. From the holding furnace, the molten metal is transferred to a pouring basin.
- In a conventional casting system, the pouring basin typically funnels the metal through a gating system that is designed to avoid turbulence and splashing as the molten metal enters the mold cavity. Turbulence and splashing of the molten metal can cause porosity in the cast part, and impurities and oxides may be entrained in the molten metal as it flows through the gating system. Conventional gating systems need multiple components, including sprues, runners and ingates that are used to cast the metal.
- A conventional direct pour casting system reduces the components for casting metal as compared to a gating system. In a conventional direct pour casting system, the pouring basin funnels the metal to a riser sleeve that supplies the molten metal to the cavity in the casting mold. The riser sleeve supports a ceramic foam filter at a top surface of the riser sleeve where the pouring basin introduces the molten metal. The molten metal flows through the filter in a smooth, substantially laminar flow into the mold cavity. The filter also traps non-metallic inclusions in the liquid metal. The molten metal exits the riser sleeve at a bottom surface of the riser sleeve.
- Direct pouring of castings simplifies the pattern design, enhances directional solidification, reduces cleaning room costs and maximizes casting yields. However, the riser sleeve may be difficult to secure in the mold during the pouring process, particularly on horizontally parted molding. Additionally, riser sleeves can only be used to cast one casting at a time. To use the conventional riser sleeve to pour more than one casting at a time, additional components, such as a nominal base and riser neck connections, are used in conjunction with the riser sleeve for the multiple casting sections to be fed.
- A direct side pour riser sleeve for receiving molten metal from a pouring basin includes a generally cylindrical body having an exterior side surface and an interior surface. Both of the surfaces generally circumscribe a centerline axis. The body has a top surface configured to receive the pouring basin and a bottom surface configured to be received in the drag portion of the mold. The riser sleeve also includes a pouring passage extending from the top surface and that is defined by the interior surface. The pouring passage is configured to receive the molten metal from the pouring basin. A taper portion is located on the exterior side surface and has a decreasing diameter towards the bottom surface.
- Another direct side pour riser sleeve for receiving molten metal from a pouring basin includes a generally cylindrical body having an exterior side surface and an interior surface, where both surfaces generally circumscribe a centerline axis. The body has a top surface configured to receive the pouring basin and a bottom surface opposite of the top surface. A pouring passage extends from the top surface and is defined by the interior surface. The pouring passage is configured to receive the molten metal from the pouring basin. At least one contact hole is located through the body from the exterior side surface to the interior surface. The contact hole is in fluid communication with the pouring passage and the casting cavity. The molten metal flows in a direction generally transverse to the centerline axis at the contact hole.
- In another direct side pour riser sleeve for receiving molten metal from a pouring basin, the riser sleeve includes a body having a top surface configured to receive the pouring basin, and a bottom surface opposite of the top surface. The body has an exterior side surface and an interior surface opposite the exterior side surface. An upper chamber extends from the top surface and is defined by the interior surface. The upper chamber is configured for receiving the molten metal from the pouring basin. A filter is in downstream fluid communication with the upper chamber, and a lower chamber is in downstream fluid communication with the filter. The lower chamber is also defined by the interior surface.
-
FIG. 1 is a front view and a top view of the direct side pour riser sleeve. -
FIG. 2 is an elevation view of the direct side pour riser sleeve from the direction indicated by A-A inFIG. 1 . -
FIG. 3 is a schematic of the direct side pour riser sleeve, a pouring basin and a casting. - Referring to
FIGS. 1-3 , a direct side pour riser sleeve (herein “riser sleeve”) is indicated generally at 10 and includes a generally cylindrical insulatedbody 12 having anexterior side surface 14, atop surface 16 and a bottom surface 18. Thetop surface 16 is generally annular and defines aninlet 20. Thetop surface 16 may have an outer diameter of about 4.88-inches, however other diameters are possible. Theinlet 20 is in fluid communication with apouring passage 22 defined by aninterior surface 24. Both theexterior side surface 14 and theinterior surface 24 generally circumscribe a centerline axis CL. - The
pouring passage 22 includes anupper chamber 26 and alower chamber 28. The upper chamber may have a height of about 3-inches and a diameter of about 4-inches at thetop surface 16, however other dimensions are possible. Further, theupper chamber 26 may have a decreasing diameter from the top surface 18. Thelower chamber 28 may have a height of about 2.75-inches and a diameter of about 4-inches at the bottom surface 18, however other dimensions are possible. - Between the
upper chamber 26 and thelower chamber 28 is a connecting portion 30 of thepouring passage 22. Afilter 32 is seated in thepouring passage 22 between theupper chamber 26 and thelower chamber 28. Thefilter 32 may have a thickness of about 0.75-inches, however other thicknesses are possible. Between thefilter 32 and thelower chamber 28, the connecting portion 30 may have a length of about 0.5-inches, however other lengths are possible. - A
pouring basin 34 is selectively attachable to thetop surface 16 of theriser sleeve 10 to permit the fluid communication of molten metal from the pouring basin to theupper chamber 26. From theupper chamber 26, the molten metal flows through thefilter 32. Thefilter 32 may be a ceramic foam filter, or any other filter suitable for filtering non-metallic inclusions and for regulating generally laminar flow of the molten metal. - From the
filter 32, the molten metal flows through a connecting portion 30 to thelower chamber 28. At least onecontact hole 36 is located through thebody 12 generally transversely to the centerline axis CL, and extends from theexterior side surface 14 to theinterior surface 24 at thelower chamber 28. Thecontact hole 36 may extend from the bottom surface 18 to atop surface 38 of thelower chamber 28, for example about 2.75-inches, however other lengths are possible. In theriser sleeve 10, twocontact holes 36 are provided in thebody 12, however any number of contact holes is possible. Themultiple contact holes 36 may extend from the bottom surface 18, or alternatively may not extend from the bottom surface. The contact holes 36 may be disposed in equal or non-equal radial segments around theexterior side surface 14, and the contact holes 36 may have similar or non-similar shapes. - From the
lower chamber 28, the molten metal flows out of thebody 12 through the at least onecontact hole 36 in a direction generally transverse to the centerline axis. The contact holes 36 allow for direct feeding to acasting cavity 40. Optionally, asprue sleeve 42 may be used to feed the metal from the contact holes to thecasting cavity 40. - The direct feeding of the molten metal through the contact holes 36 reduces the amount of metal needed for casting, and may eliminate the need for a sprue, runner and possibly one or more risers. Further, where multiple casting
cavities 40 are used with multiple contact holes 36 in asingle riser sleeve 10, there may be increased metal feeding per metal poured. Further still, using asingle riser sleeve 10 to feed multiple castingcavities 40 allows space in the mold to be freed-up so that a mold may be used more efficiently. - The bottom surface 18 of the
riser sleeve 10 is generally annular and defines a mold outlet 44. Theexterior side surface 14 includes alower taper portion 46, where the exterior surface of thebody 12 has a decreasing diameter vertically towards the bottom surface 18. The diameter of the bottom surface 18 at thetaper portion 46 may be about 5.12-inches, however other dimensions are possible. Thetaper portion 46 and the bottom surface 18 are configured to be set into and to sealingly engage a drag portion of themold 48, where the drag portion also has a taper. Thetaper portion 46 secures theriser sleeve 10 in place as the riser sleeve moves along the assembly line in an automated horizontal molding machine, or any other molding machine. Thetaper portion 46 may have a length of about 1-inch, and the remainder of theexterior side surface 14 may have a length of about 6-inches, however other lengths are possible. - The
filter 32 is located generally centrally along the length of thebody 12, or about 3-inches from thetop surface 16 and about 3.25-inches from the bottom surface 18, although other distances are possible. With thefilter 32 disposed in the pouringpassage 22 between theupper chamber 26 and thelower chamber 28, the center of gravity of theriser sleeve 10 is lower than a conventional riser sleeve, where the filter is typically located at thetop surface 16 of the riser sleeve. With thefilter 32 located closer to the bottom surface 18 and closer to thecasting cavity 40, the pressure may be reduced as the metal enters the casting cavity, and there may be a reduction in slag or dross regeneration. - The
riser sleeve 10 may provide efficiencies in one or more simultaneous castings, may replace or be used in conjunction with components of a gating system, and sits more securely in the casting machine Additionally, theriser sleeve 10 may be accepted on existing patterns with little to no modification of the sleeve or the pattern.
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/818,699 US20110309115A1 (en) | 2010-06-18 | 2010-06-18 | Direct side pour riser sleeve |
PCT/US2011/040908 WO2011160034A1 (en) | 2010-06-18 | 2011-06-17 | Direct side pour riser sleeve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/818,699 US20110309115A1 (en) | 2010-06-18 | 2010-06-18 | Direct side pour riser sleeve |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110309115A1 true US20110309115A1 (en) | 2011-12-22 |
Family
ID=45327759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/818,699 Abandoned US20110309115A1 (en) | 2010-06-18 | 2010-06-18 | Direct side pour riser sleeve |
Country Status (2)
Country | Link |
---|---|
US (1) | US20110309115A1 (en) |
WO (1) | WO2011160034A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113477888A (en) * | 2021-06-24 | 2021-10-08 | 襄阳五二五泵业有限公司 | Gating system for sand casting |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103949591B (en) * | 2014-03-31 | 2015-12-09 | 日月重工股份有限公司 | For the running gate system of Casting Chemistry standard sample blank |
CN106334782B (en) * | 2016-08-23 | 2018-10-30 | 芜湖泓鹄材料技术有限公司 | Pouring cup device and preparation method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4719958A (en) * | 1986-01-14 | 1988-01-19 | Foseco International Ltd. | Method, apparatus and feeder sleeves for the production of casting moulds |
US5158217A (en) * | 1990-04-26 | 1992-10-27 | Huminsky Donald D | Twist lock junction between refractory tubular shapes |
US5425410A (en) * | 1994-08-25 | 1995-06-20 | Pyrotek, Inc. | Sand casting mold riser/sprue sleeve |
US6133340A (en) * | 1996-03-25 | 2000-10-17 | Ashland Inc. | Sleeves, their preparation, and use |
US6289969B1 (en) * | 1998-04-08 | 2001-09-18 | Foseco International Limited | Metal casting |
US6343642B1 (en) * | 1997-10-01 | 2002-02-05 | Masamitsu Miki | Riser sleeve |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4125146A (en) * | 1973-08-07 | 1978-11-14 | Ernst Muller | Continuous casting processes and apparatus |
US4186791A (en) * | 1976-12-27 | 1980-02-05 | Ukrainsky Nauchno | Process and apparatus for horizontal continuous casting of metal |
AU601315B2 (en) * | 1988-01-30 | 1990-09-06 | Foseco International Limited | Moulds for metal casting and sleeves containing filters for use therein |
-
2010
- 2010-06-18 US US12/818,699 patent/US20110309115A1/en not_active Abandoned
-
2011
- 2011-06-17 WO PCT/US2011/040908 patent/WO2011160034A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4719958A (en) * | 1986-01-14 | 1988-01-19 | Foseco International Ltd. | Method, apparatus and feeder sleeves for the production of casting moulds |
US5158217A (en) * | 1990-04-26 | 1992-10-27 | Huminsky Donald D | Twist lock junction between refractory tubular shapes |
US5425410A (en) * | 1994-08-25 | 1995-06-20 | Pyrotek, Inc. | Sand casting mold riser/sprue sleeve |
US6133340A (en) * | 1996-03-25 | 2000-10-17 | Ashland Inc. | Sleeves, their preparation, and use |
US6343642B1 (en) * | 1997-10-01 | 2002-02-05 | Masamitsu Miki | Riser sleeve |
US6289969B1 (en) * | 1998-04-08 | 2001-09-18 | Foseco International Limited | Metal casting |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113477888A (en) * | 2021-06-24 | 2021-10-08 | 襄阳五二五泵业有限公司 | Gating system for sand casting |
Also Published As
Publication number | Publication date |
---|---|
WO2011160034A1 (en) | 2011-12-22 |
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Owner name: NAVISTAR, INC., ILLINOIS Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:044416/0867 Effective date: 20171106 Owner name: INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:044416/0867 Effective date: 20171106 Owner name: INTERNATIONAL TRUCK INTELLECTUAL PROPERTY COMPANY, Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:044416/0867 Effective date: 20171106 Owner name: NAVISTAR INTERNATIONAL CORPORATION, ILLINOIS Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT;REEL/FRAME:044416/0867 Effective date: 20171106 |