CN113664148A - High-temperature alloy casing casting pouring fired mold - Google Patents
High-temperature alloy casing casting pouring fired mold Download PDFInfo
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- CN113664148A CN113664148A CN202110966681.7A CN202110966681A CN113664148A CN 113664148 A CN113664148 A CN 113664148A CN 202110966681 A CN202110966681 A CN 202110966681A CN 113664148 A CN113664148 A CN 113664148A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- 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
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- 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
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Abstract
A high-temperature alloy casing casting pouring investment pattern comprises a pouring cup, a sprue, an arc-shaped cross runner, a casting outer ring side annular runner, a casting inner ring side annular runner and a casting; the sprue cup is connected with the sprue, and the sprue, the casting inner ring side annular runner and the casting outer ring side annular runner are connected through a plurality of arc-shaped cross runners which are uniformly distributed in the circular direction; a plurality of first local runner assemblies are arranged between the installation edge of the outer ring of the casting and the annular runner on the side of the outer ring of the casting; the upper installation edge of the inner casting ring and the inner casting ring-shaped runner, the outer casting ring-shaped runner and the outer casting ring lug, the outer casting ring-shaped runner and the front reinforcing rib of the outer casting ring supporting plate, the lower installation edge of the outer casting ring, the back reinforcing rib of the outer casting ring lug and the arc-shaped cross runner, the lower installation edge of the inner casting ring, the back reinforcing rib of the inner casting ring supporting plate and the arc-shaped cross runner and the middle of the outer casting supporting plate and the arc-shaped cross runner are respectively provided with matched local runner assemblies.
Description
Technical Field
The invention belongs to the technical field of investment casting, and particularly relates to a pouring investment for a high-temperature alloy casing casting.
Background
At present, a plurality of casing castings of an aircraft engine are integrally cast by high-temperature alloy, the casing castings have the characteristics of complex structure, large size, large thin-wall area and large section mutation, so that the casting difficulty is high, and when the casting investment mold with the conventional structure is adopted, casting defects such as looseness, cracks, deformation, insufficient pouring and the like are easily generated on casting products, so that the qualification rate of the high-temperature alloy casing casting products is always low.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-temperature alloy casing casting pouring fired mold, which breaks through the design idea of the existing pouring fired mold structure, can obviously reduce the shrinkage stress of a pouring fired mold system to a casting, can generate obvious sequential solidification effect, effectively solves the casting defects of looseness, cracks, deformation, insufficient pouring and the like, and improves the qualification rate of high-temperature alloy casing casting products by more than 50%.
In order to achieve the purpose, the invention adopts the following technical scheme: a high-temperature alloy casing casting pouring investment pattern comprises a pouring cup, a sprue, an arc-shaped cross runner, a casting outer ring side annular runner, a casting inner ring side annular runner and a casting; the casting outer ring side annular pouring gate is positioned right above the mounting edge on the casting outer ring, and the casting outer ring side annular pouring gate and the mounting edge on the casting outer ring are coaxially distributed; the casting inner ring side annular pouring gate is positioned right above the casting inner ring upper mounting edge, and the casting inner ring side annular pouring gate and the casting inner ring upper mounting edge are coaxially distributed; the sprue is vertically positioned at the center of the annular sprue at the inner ring side of the casting, and the sprue cup is coaxially and fixedly connected to the top of the sprue; the sprue, the casting inner ring side annular runner and the casting outer ring side annular runner are connected through arc-shaped cross runners, the number of the arc-shaped cross runners is multiple, and the arc-shaped cross runners are uniformly distributed along the circumferential direction; a plurality of first local runner assemblies are arranged between the installation edge of the outer ring of the casting and the annular runner on the side of the outer ring of the casting, and are uniformly distributed along the circumferential direction; a plurality of second local pouring gate assemblies are arranged between the upper mounting edge of the inner casting ring and the annular pouring gate on the inner casting ring side, and the second local pouring gate assemblies are uniformly distributed along the circumferential direction; a third local runner assembly is arranged between the casting outer ring side annular runner and the casting outer ring lug; a fourth local runner assembly is arranged between the casting outer ring side annular runner and the casting outer ring support plate front reinforcing rib; a fifth local runner assembly is arranged between the lower mounting edge of the outer ring of the casting, the reinforcing rib at the back of the lug of the outer ring of the casting and the arc-shaped cross runner; a sixth local runner assembly is arranged between the lower mounting edge of the casting inner ring and the arc-shaped cross runner and between the back reinforcing rib of the casting inner ring support plate and the arc-shaped cross runner; and a seventh local runner assembly is arranged between the casting support plate and the arc-shaped cross runner.
The first local pouring gate assembly comprises a casting outer ring side connecting pouring gate, a casting outer ring side spherical riser and a casting outer ring side cylindrical pouring gate; the upper end of the casting outer ring side connecting pouring gate is connected with the casting outer ring side annular pouring gate, the lower end of the casting outer ring side connecting pouring gate is connected with the upper end of the casting outer ring side cylindrical pouring gate through a casting outer ring side spherical riser, and the lower end of the casting outer ring side cylindrical pouring gate is connected with the mounting edge on the casting outer ring.
The second local pouring gate assembly comprises a casting inner ring side connecting pouring gate, a casting inner ring side spherical riser and a casting inner ring side cylindrical pouring gate; the upper end of the casting inner ring side connecting pouring gate is connected with the casting inner ring side annular pouring gate, the lower end of the casting inner ring side connecting pouring gate is connected with the upper end of the casting inner ring side cylindrical pouring gate through the casting inner ring side spherical dead head, and the lower end of the casting inner ring side cylindrical pouring gate is connected with the upper mounting edge of the casting inner ring.
The third local pouring gate assembly comprises a lug connecting arc-shaped pouring gate, a lug connecting cylindrical riser and a lug connecting inner pouring gate; the upper end of the arc-shaped pouring gate is connected with the annular pouring gate on the outer ring side of the casting through the lug, and the lower end of the arc-shaped pouring gate is connected with the lug on the outer ring of the casting through the lug connection cylindrical riser and the lug connection inner pouring gate in sequence.
The fourth local pouring gate assembly comprises a casting outer ring support plate front reinforcing rib connecting arc-shaped pouring gate and an outer ring support plate front reinforcing rib connecting wedge-shaped riser; the front reinforcing rib of the outer ring support plate is connected with the upper end of the arc-shaped pouring gate and is connected with the annular pouring gate at the outer ring side of the casting, and the front reinforcing rib of the outer ring support plate is connected with the lower end of the arc-shaped pouring gate and is connected with the wedge-shaped riser through the front reinforcing rib of the outer ring support plate and is connected with the front reinforcing rib of the outer ring support plate.
The fifth local pouring gate assembly comprises a casting outer ring side cylindrical pouring gate, a casting outer ring side cylindrical riser, a casting outer ring lower mounting edge connecting wedge-shaped pouring gate and a casting outer ring lug back reinforcing rib connecting wedge-shaped pouring gate; the upper end of the casting outer ring side cylindrical pouring gate is connected with the arc-shaped cross pouring gate, and the casting outer ring side cylindrical riser is connected to the lower end of the casting outer ring side cylindrical pouring gate; the lower mounting edge of the outer ring of the casting is connected with the wedge-shaped pouring gate through the lower mounting edge of the outer ring of the casting and is connected with the cylindrical riser on the side of the outer ring of the casting; and the casting outer ring lug back reinforcing rib is connected with the wedge-shaped pouring gate through the casting outer ring lug back reinforcing rib and is connected with the casting outer ring side cylindrical riser.
The sixth local pouring gate assembly comprises a casting inner ring side cylindrical pouring gate, a casting inner ring side cylindrical riser, a casting inner ring lower mounting edge connecting wedge-shaped pouring gate and a casting inner ring support plate back reinforcing rib connecting wedge-shaped pouring gate; the upper end of the casting inner ring side cylindrical pouring gate is connected with the arc-shaped cross pouring gate, and the casting inner ring side cylindrical riser is connected to the lower end of the casting inner ring side cylindrical pouring gate; the lower mounting edge of the inner casting ring is connected with the wedge-shaped pouring gate through the lower mounting edge of the inner casting ring and is connected with the cylindrical riser on the side of the inner casting ring; the casting inner ring support plate back reinforcing rib is connected with the wedge-shaped pouring gate through the casting inner ring support plate back reinforcing rib and is connected with the casting inner ring side cylindrical riser.
The seventh local pouring gate assembly comprises a support plate cylindrical pouring gate and a support plate arch bridge-shaped riser; the upper end of the support plate cylindrical pouring gate is connected with the arc-shaped cross pouring gate, and the lower end of the support plate cylindrical pouring gate is connected with the casting support plate through a support plate arch bridge-shaped riser.
The invention has the beneficial effects that:
the high-temperature alloy casing casting pouring fired mold breaks through the design idea of the existing pouring fired mold structure, can remarkably reduce the shrinkage stress of a pouring fired mold system to a casting, can generate a remarkable sequential solidification effect, effectively solves the casting defects of looseness, cracks, deformation, insufficient pouring and the like, and improves the qualification rate of high-temperature alloy casing casting products by over 50 percent.
Drawings
FIG. 1 is a schematic structural diagram of a casting pattern of a superalloy casing casting according to the present invention;
FIG. 2 is a schematic structural view of a casting pattern (cross-section) of a superalloy casing casting according to the present invention;
in the figure, 1-sprue cup, 2-sprue, 3-arc runner, 4-casting outer ring side annular runner, 5-casting inner ring side annular runner, 6-casting, 7-casting outer ring side connecting runner, 8-casting outer ring side spherical riser, 9-casting outer ring side cylindrical runner, 10-casting inner ring side connecting runner, 11-casting inner ring side spherical riser, 12-casting inner ring side cylindrical runner, 13-lug connecting arc runner, 14-lug connecting cylindrical riser, 15-lug connecting inner runner, 16-casting outer ring support plate front reinforcing rib connecting arc runner, 17-casting outer ring support plate front reinforcing rib connecting wedge riser, 18-casting outer ring side cylindrical runner, 19-casting outer ring side cylindrical riser, 20-casting outer ring lower mounting edge connecting wedge runner, 21-casting outer ring back reinforcing rib connecting wedge runner, 22-casting inner ring side cylindrical pouring gate, 23-casting inner ring side cylindrical riser, 24-casting inner ring lower mounting edge connecting wedge-shaped pouring gate, 25-casting inner ring support plate back reinforcing rib connecting wedge-shaped pouring gate, 26-support plate cylindrical pouring gate and 27-support plate arch bridge-shaped riser.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
In this embodiment, the high-temperature alloy casing to be cast is an inner and outer double-ring structure connected by a hollow support plate, the inner ring and the outer ring of the casting are both provided with mounting edges, the outer surface of the outer ring of the casting is provided with lugs, the inner surface of the outer ring of the casting at the back of the lugs is provided with reinforcing ribs, the outer surface of the outer ring of the casting at the front of the hollow support plate and the inner surface of the inner ring of the casting at the back of the hollow support plate are also provided with reinforcing ribs, the mounting edges, the lugs and the reinforcing ribs at the upper part of the casting are thick parts, and the rest parts are thin-wall structures.
As shown in fig. 1 and 2, the casting investment pattern of the high-temperature alloy casing casting comprises a sprue cup 1, a sprue 2, an arc-shaped cross runner 3, a casting outer ring side annular runner 4, a casting inner ring side annular runner 5 and a casting 6; the casting outer ring side annular pouring gate 4 is positioned right above the outer ring upper mounting edge of the casting 6, and the casting outer ring side annular pouring gate 4 and the outer ring upper mounting edge of the casting 6 are coaxially distributed; the casting inner ring side annular pouring gate 5 is positioned right above the inner ring upper mounting edge of the casting 6, and the casting inner ring side annular pouring gate 5 and the casting 6 inner ring upper mounting edge are coaxially distributed; the sprue 2 is vertically positioned at the center of an annular sprue 5 at the inner ring side of the casting, and the pouring cup 1 is coaxially and fixedly connected to the top of the sprue 2; the sprue 2, the casting inner ring side annular runner 5 and the casting outer ring side annular runner 4 are connected through arc-shaped cross runners 3, the number of the arc-shaped cross runners 3 is a plurality, and the arc-shaped cross runners 3 are uniformly distributed along the circumferential direction; a plurality of first local runner assemblies are arranged between the upper mounting edge of the outer ring of the casting 6 and the annular runner 4 at the outer ring side of the casting, and are uniformly distributed along the circumferential direction; a plurality of second local pouring gate assemblies are arranged between the upper mounting edge of the inner ring of the casting 6 and the annular pouring gate 5 at the inner ring side of the casting, and the second local pouring gate assemblies are uniformly distributed along the circumferential direction; a third local pouring gate assembly is arranged between the casting outer ring side annular pouring gate 4 and the casting 6 outer ring lug; a fourth local runner assembly is arranged between the casting outer ring side annular runner 4 and the casting 6 outer ring support plate front reinforcing rib; a fifth local runner assembly is arranged between the lower mounting edge of the outer ring of the casting 6, the reinforcing rib at the back part of the lug of the outer ring of the casting 6 and the arc-shaped cross runner 3; a sixth local runner assembly is arranged between the lower mounting edge of the inner ring of the casting 6, the reinforcing rib at the back of the inner ring support plate of the casting 6 and the arc-shaped cross runner 3; and a seventh local runner assembly is arranged between the casting 6 support plate and the arc-shaped cross runner 3.
Specifically, the pouring cup 1 is in an inverted trapezoidal shape, the diameter of the lower bottom is phi 60 mm-phi 110mm, the diameter of the upper bottom is phi 100 mm-phi 200mm, and the height is 100 mm-150 mm; the section of the sprue 2 is circular, the diameter of the sprue 2 is the same as that of the lower bottom of the pouring cup 1, the height of the sprue 2 is 80-120 mm, and the lower part of the sprue 2 is exposed by 20-30 mm after the sprue 2 is connected with the arc-shaped cross gate 3; the section of the arc-shaped cross gate 3 is circular, the diameter of the section is phi 25 mm-phi 45mm, and the number of the sections is 5-12; the section of the annular pouring gate 4 at the outer ring side of the casting is circular, the diameter of the section is phi 20 mm-phi 35mm, and the annular diameter of the annular pouring gate 4 at the outer ring side of the casting is phi 700 mm-phi 1200 mm; the section of the casting inner ring side annular pouring gate 5 is circular, the diameter of the section is phi 15 mm-phi 25mm, and the annular diameter of the casting inner ring side annular pouring gate 5 is phi 400 mm-phi 600 mm.
The first local pouring gate assembly comprises a casting outer ring side connecting pouring gate 7, a casting outer ring side spherical riser 8 and a casting outer ring side cylindrical pouring gate 9; the upper end of the casting outer ring side connecting pouring gate 7 is connected with the casting outer ring side annular pouring gate 4, the lower end of the casting outer ring side connecting pouring gate 7 is connected with the upper end of the casting outer ring side cylindrical pouring gate 9 through a casting outer ring side spherical riser 8, and the lower end of the casting outer ring side cylindrical pouring gate 9 is connected with the outer ring upper mounting edge of the casting 6.
Specifically, the number of the first local runner assembly bodies is 21-42; the cross section of the casting outer ring side connecting pouring gate 7 is circular, and the diameter of the cross section is phi 15 mm-phi 25 mm; the sphere diameter of the spherical riser 8 at the outer ring side of the casting is phi 50 mm-phi 70 mm; the cross section of the cylindrical gate 9 on the outer ring side of the casting is circular, the diameter of the cross section is phi 25 mm-phi 40mm, and the height is 25 mm-45 mm.
The second local pouring gate assembly comprises a casting inner ring side connecting pouring gate 10, a casting inner ring side spherical riser 11 and a casting inner ring side cylindrical pouring gate 12; the upper end of the casting inner ring side connecting pouring gate 10 is connected with the casting inner ring side annular pouring gate 5, the lower end of the casting inner ring side connecting pouring gate 10 is connected with the upper end of a casting inner ring side cylindrical pouring gate 12 through a casting inner ring side spherical dead head 11, and the lower end of the casting inner ring side cylindrical pouring gate 12 is connected with the upper mounting edge of the casting 6 inner ring.
Specifically, the number of the second local pouring gate assemblies is 14-28; the cross section of the casting inner ring side connecting pouring gate 10 is circular, and the diameter of the cross section is phi 15 mm-phi 25 mm; the sphere diameter of the spherical riser 11 at the inner ring side of the casting is phi 40 mm-phi 60 mm; the cross section of the cylindrical gate 12 at the inner ring side of the casting is circular, the diameter of the cross section is phi 15 mm-phi 30mm, and the height is 20 mm-30 mm.
The third partial pouring gate assembly comprises a lug connecting arc-shaped pouring gate 13, a lug connecting cylindrical riser 14 and a lug connecting inner pouring gate 15; the upper end of the lug connecting arc-shaped pouring gate 13 is connected with the casting outer ring side annular pouring gate 4, and the lower end of the lug connecting arc-shaped pouring gate 13 is connected with the casting 6 outer ring lug sequentially through the lug connecting cylindrical riser 14 and the lug connecting inner sprue 15.
Specifically, the cross section of the lug connecting arc-shaped pouring gate 13 is circular, and the diameter of the cross section is phi 15 mm-phi 30 mm; the section of the lug connecting cylindrical riser 14 is circular, the diameter of the section is phi 30 mm-phi 50mm, and the length is 35 mm-60 mm; the cross section of the lug connecting inner sprue 15 is circular, the diameter of the cross section is phi 15 mm-phi 30mm, and the length is 15 mm-25 mm.
The fourth local pouring gate assembly comprises a casting outer ring support plate front reinforcing rib connecting arc-shaped pouring gate 16 and a casting outer ring support plate front reinforcing rib connecting wedge-shaped riser 17; the front reinforcing rib of the casting outer ring support plate is connected with the upper end of the arc-shaped pouring gate 16 and is connected with the casting outer ring side annular pouring gate 4, and the front reinforcing rib of the casting outer ring support plate is connected with the lower end of the arc-shaped pouring gate 16 and is connected with the front reinforcing rib of the casting outer ring support plate through the wedge-shaped riser 17 connected with the casting 6.
Specifically, the cross section of the front reinforcing rib of the casting outer ring support plate connected with the arc runner 16 is circular, and the diameter of the cross section is phi 15 mm-phi 30 mm; the section of the casting outer ring support plate front reinforcing rib connecting wedge-shaped riser 17 is rectangular, the length of the minimum end face is 50-100 mm, the width of the minimum end face is 6-15 mm, the length of the maximum end face is 55-110 mm, the width of the maximum end face is 15-25 mm, and the height of the casting outer ring support plate front reinforcing rib connecting wedge-shaped riser 17 is 15-30 mm.
The fifth local pouring gate assembly comprises a casting outer ring side cylindrical pouring gate 18, a casting outer ring side cylindrical riser 19, a casting outer ring lower mounting edge connecting wedge-shaped pouring gate 20 and a casting outer ring lug back reinforcing rib connecting wedge-shaped pouring gate 21; the upper end of the casting outer ring side cylindrical pouring gate 18 is connected with the arc cross gate 3, and the casting outer ring side cylindrical riser 19 is connected with the lower end of the casting outer ring side cylindrical pouring gate 18; the lower mounting edge of the outer ring of the casting 6 is connected with a wedge-shaped sprue 20 through the lower mounting edge of the outer ring of the casting and is connected with a cylindrical riser 19 at the outer ring side of the casting; the casting 6 outer ring lug back reinforcing rib is connected with the casting outer ring side cylindrical riser 19 through the casting outer ring lug back reinforcing rib connecting wedge-shaped sprue 21.
Specifically, the cross section of the casting outer ring side cylindrical pouring gate 18 is circular, the diameter of the cross section is phi 20 mm-phi 30mm, and the number of the casting outer ring side cylindrical pouring gates 18 is 14-28; the cross section of the casting outer ring side cylindrical riser 19 is circular, and the diameter of the cross section is phi 20 mm-phi 30 mm; the section of the lower mounting edge of the outer ring of the casting is connected with the wedge-shaped gate 20 and is rectangular, the length of the minimum end face is 20-30 mm, the width of the minimum end face is 8-20 mm, the length of the maximum end face is 30-40 mm, the width of the maximum end face is 15-30 mm, the height of the reinforcing rib at the front of the outer ring support plate, which is connected with the wedge-shaped riser 17, is 30-70 mm, and the number of the reinforcing ribs is 7-14; the cross section of the casting outer ring lug back reinforcing rib connecting wedge-shaped gate 21 is rectangular, the length of the minimum end face is 30-40 mm, the width of the minimum end face is 8-20 mm, the length of the maximum end face is 40-50 mm, the width of the maximum end face is 15-30 mm, the height of the outer ring support plate front reinforcing rib connecting wedge-shaped riser 17 is 30-70 mm, and the number of the reinforcing ribs is 7-14.
The sixth local pouring gate assembly comprises a casting inner ring side cylindrical pouring gate 22, a casting inner ring side cylindrical riser 23, a casting inner ring lower mounting edge connecting wedge-shaped pouring gate 24 and a casting inner ring support plate back reinforcing rib connecting wedge-shaped pouring gate 25; the upper end of the casting inner ring side cylindrical pouring gate 22 is connected with the arc cross gate 3, and the casting inner ring side cylindrical riser 23 is connected with the lower end of the casting inner ring side cylindrical pouring gate 22; the lower mounting edge of the inner ring of the casting 6 is connected with a wedge-shaped pouring gate 24 through the lower mounting edge of the inner ring of the casting and is connected with a cylindrical riser 23 at the inner ring side of the casting; the reinforcing rib at the back of the casting 6 inner ring support plate is connected with the wedge-shaped pouring gate 25 through the reinforcing rib at the back of the casting inner ring support plate and is connected with the casting inner ring side cylindrical dead head 23.
Specifically, the cross section of the casting inner ring side cylindrical runner 22 is circular, the diameter of the cross section is phi 12 mm-phi 25mm, and the number of the cross sections is 5-12; the cross section of the casting inner ring side cylindrical riser 23 is circular, the diameter of the cross section is phi 25 mm-phi 45mm, and the number of the casting inner ring side cylindrical risers is 5-12; the section of the lower mounting edge of the inner casting ring connected with the wedge-shaped gate 24 is rectangular, the length of the minimum end face is 30-40 mm, the width of the minimum end face is 8-20 mm, the length of the maximum end face is 40-50 mm, the width of the maximum end face is 15-30 mm, the height of the reinforcing rib at the front of the outer ring support plate connected with the wedge-shaped riser 17 is 30-70 mm, and the number of the reinforcing ribs is 7-14; the cross section of the casting inner ring support plate back reinforcing rib connecting wedge-shaped gate 25 is rectangular, the length of the minimum end face is 20 mm-30 mm, the width of the minimum end face is 8 mm-20 mm, the length of the maximum end face is 30 mm-40 mm, the width of the maximum end face is 15 mm-30 mm, the height of the outer ring support plate front reinforcing rib connecting wedge-shaped riser 17 is 30 mm-70 mm, and the number of the reinforcing ribs is 7-14.
The seventh local pouring gate assembly comprises a support plate cylindrical pouring gate 26 and a support plate arch bridge-shaped riser 27; the upper end of the support plate cylindrical pouring gate 26 is connected with the arc-shaped cross pouring gate 3, and the lower end of the support plate cylindrical pouring gate 26 is connected with the support plate of the casting 6 through a support plate arch bridge-shaped riser 27.
Specifically, the section of the support plate cylindrical runner 26 is circular, and the diameter of the section is phi 12 mm-phi 25 mm; the section of the support plate arch bridge-shaped riser 27 is rectangular, the length of the maximum end face of an arch bridge deck is 50-150 mm, the width of the maximum end face of the arch bridge deck is 10-30 mm, the length of the minimum end face of an arch bridge pier is 40-130 mm, the width of the minimum end face of the arch bridge pier is 5-20 mm, and the height of the support plate arch bridge-shaped riser 27 is 30-60 mm.
When the investment casting is carried out, molten steel is shunted from a sprue cup 1 through a sprue 2 and enters an arc-shaped cross runner 3, and then is respectively filled into a casting inner ring side cylindrical runner 22, a casting inner ring side annular runner 5, a support plate cylindrical runner 26, a casting outer ring side cylindrical runner 18 and a casting outer ring side annular runner 4.
Molten steel passing through the casting inner ring side cylindrical runner 22 then enters the casting inner ring side cylindrical riser 23, and then the casting inner ring support plate back reinforcing rib is fed through the casting inner ring support plate back reinforcing rib connecting wedge-shaped sprue 25, and the casting 6 inner ring lower mounting edge is fed through the casting inner ring lower mounting edge connecting wedge-shaped sprue 24.
Molten steel passing through the casting inner ring side annular runner 5 then enters the casting inner ring side spherical riser 11 through the casting inner ring side connecting runner 10, and then the inner ring upper mounting edge of the casting 6 is fed through the casting inner ring side cylindrical gate 12.
The molten steel passing through the support plate cylindrical runner 26 then enters the support plate arch bridge riser 27 to feed the casting 6.
Molten steel passing through the casting outer ring side cylindrical runner 18 then enters the casting outer ring side cylindrical riser 19, which in turn feeds the casting 6 outer ring lower mounting edge through the casting outer ring lower mounting edge connecting wedge gate 20 and feeds the casting 6 outer ring lug back stiffener through the casting outer ring lug back stiffener connecting wedge gate 21.
Molten steel passing through the casting outer ring side annular pouring gate 4 enters a lug connection arc-shaped pouring gate 13 and a casting outer ring support plate front reinforcing rib connection arc-shaped pouring gate 16, the molten steel passes through the lug connection arc-shaped pouring gate 13 and enters the lug connection cylindrical riser 14, then the lug connection inner sprue 15 is used for feeding the lug of the casting 6, the molten steel passes through the casting outer ring support plate front reinforcing rib connection arc-shaped pouring gate 16 and enters an outer ring support plate front reinforcing rib connection wedge-shaped riser 17, and then the casting outer ring support plate front reinforcing rib connection wedge-shaped riser 17 is used for feeding the casting 6 outer ring support plate front reinforcing rib.
The mold filling sequence of the pouring investment mold is as follows: the upper and lower mounting edges of the inner ring of the casting 6, the support plate, the upper and lower mounting edges of the outer ring, the lugs, the reinforcing ribs and the like are sequentially fed by a multi-point riser, fine runner transition is formed in the connection between the casting 6 and a pouring system, and the cross runners are arc-shaped, so that the advantages of sequential feeding and solidification stress reduction are fully embodied, the effects of eliminating cracks, inhibiting loosening and improving size precision are effectively achieved, and the qualified rate of casting products is improved by 50%.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A high-temperature alloy casing casting pouring fired mold is characterized in that: the casting pouring device comprises a pouring cup, a sprue, an arc-shaped cross gate, a casting outer ring side annular gate, a casting inner ring side annular gate and a casting; the casting outer ring side annular pouring gate is positioned right above the mounting edge on the casting outer ring, and the casting outer ring side annular pouring gate and the mounting edge on the casting outer ring are coaxially distributed; the casting inner ring side annular pouring gate is positioned right above the casting inner ring upper mounting edge, and the casting inner ring side annular pouring gate and the casting inner ring upper mounting edge are coaxially distributed; the sprue is vertically positioned at the center of the annular sprue at the inner ring side of the casting, and the sprue cup is coaxially and fixedly connected to the top of the sprue; the sprue, the casting inner ring side annular runner and the casting outer ring side annular runner are connected through arc-shaped cross runners, the number of the arc-shaped cross runners is multiple, and the arc-shaped cross runners are uniformly distributed along the circumferential direction; a plurality of first local runner assemblies are arranged between the installation edge of the outer ring of the casting and the annular runner on the side of the outer ring of the casting, and are uniformly distributed along the circumferential direction; a plurality of second local pouring gate assemblies are arranged between the upper mounting edge of the inner casting ring and the annular pouring gate on the inner casting ring side, and the second local pouring gate assemblies are uniformly distributed along the circumferential direction; a third local runner assembly is arranged between the casting outer ring side annular runner and the casting outer ring lug; a fourth local runner assembly is arranged between the casting outer ring side annular runner and the casting outer ring support plate front reinforcing rib; a fifth local runner assembly is arranged between the lower mounting edge of the outer ring of the casting, the reinforcing rib at the back of the lug of the outer ring of the casting and the arc-shaped cross runner; a sixth local runner assembly is arranged between the lower mounting edge of the casting inner ring and the arc-shaped cross runner and between the back reinforcing rib of the casting inner ring support plate and the arc-shaped cross runner; and seventh local runner assemblies are arranged between the casting support plate and the arc-shaped cross runners.
2. The superalloy casing casting pouring pattern of claim 1, wherein: the first local pouring gate assembly comprises a casting outer ring side connecting pouring gate, a casting outer ring side spherical riser and a casting outer ring side cylindrical pouring gate; the upper end of the casting outer ring side connecting pouring gate is connected with the casting outer ring side annular pouring gate, the lower end of the casting outer ring side connecting pouring gate is connected with the upper end of the casting outer ring side cylindrical pouring gate through a casting outer ring side spherical riser, and the lower end of the casting outer ring side cylindrical pouring gate is connected with the mounting edge on the casting outer ring.
3. The superalloy casing casting pouring pattern of claim 1, wherein: the second local pouring gate assembly comprises a casting inner ring side connecting pouring gate, a casting inner ring side spherical riser and a casting inner ring side cylindrical pouring gate; the upper end of the casting inner ring side connecting pouring gate is connected with the casting inner ring side annular pouring gate, the lower end of the casting inner ring side connecting pouring gate is connected with the upper end of the casting inner ring side cylindrical pouring gate through the casting inner ring side spherical dead head, and the lower end of the casting inner ring side cylindrical pouring gate is connected with the upper mounting edge of the casting inner ring.
4. The superalloy casing casting pouring pattern of claim 1, wherein: the third local pouring gate assembly comprises a lug connecting arc-shaped pouring gate, a lug connecting cylindrical riser and a lug connecting inner pouring gate; the upper end of the arc-shaped pouring gate is connected with the annular pouring gate on the outer ring side of the casting through the lug, and the lower end of the arc-shaped pouring gate is connected with the lug on the outer ring of the casting through the lug connection cylindrical riser and the lug connection inner pouring gate in sequence.
5. The superalloy casing casting pouring pattern of claim 1, wherein: the fourth local pouring gate assembly comprises a casting outer ring support plate front reinforcing rib connecting arc-shaped pouring gate and an outer ring support plate front reinforcing rib connecting wedge-shaped riser; the front reinforcing rib of the outer ring support plate is connected with the upper end of the arc-shaped pouring gate and is connected with the annular pouring gate at the outer ring side of the casting, and the front reinforcing rib of the outer ring support plate is connected with the lower end of the arc-shaped pouring gate and is connected with the wedge-shaped riser through the front reinforcing rib of the outer ring support plate and is connected with the front reinforcing rib of the outer ring support plate.
6. The superalloy casing casting pouring pattern of claim 1, wherein: the fifth local pouring gate assembly comprises a casting outer ring side cylindrical pouring gate, a casting outer ring side cylindrical riser, a casting outer ring lower mounting edge connecting wedge-shaped pouring gate and a casting outer ring lug back reinforcing rib connecting wedge-shaped pouring gate; the upper end of the casting outer ring side cylindrical pouring gate is connected with the arc-shaped cross pouring gate, and the casting outer ring side cylindrical riser is connected to the lower end of the casting outer ring side cylindrical pouring gate; the lower mounting edge of the outer ring of the casting is connected with the wedge-shaped pouring gate through the lower mounting edge of the outer ring of the casting and is connected with the cylindrical riser on the side of the outer ring of the casting; and the casting outer ring lug back reinforcing rib is connected with the wedge-shaped pouring gate through the casting outer ring lug back reinforcing rib and is connected with the casting outer ring side cylindrical riser.
7. The superalloy casing casting pouring pattern of claim 1, wherein: the sixth local pouring gate assembly comprises a casting inner ring side cylindrical pouring gate, a casting inner ring side cylindrical riser, a casting inner ring lower mounting edge connecting wedge-shaped pouring gate and a casting inner ring support plate back reinforcing rib connecting wedge-shaped pouring gate; the upper end of the casting inner ring side cylindrical pouring gate is connected with the arc-shaped cross pouring gate, and the casting inner ring side cylindrical riser is connected to the lower end of the casting inner ring side cylindrical pouring gate; the lower mounting edge of the inner casting ring is connected with the wedge-shaped pouring gate through the lower mounting edge of the inner casting ring and is connected with the cylindrical riser on the side of the inner casting ring; the casting inner ring support plate back reinforcing rib is connected with the wedge-shaped pouring gate through the casting inner ring support plate back reinforcing rib and is connected with the casting inner ring side cylindrical riser.
8. The superalloy casing casting pouring pattern of claim 1, wherein: the seventh local pouring gate assembly comprises a support plate cylindrical pouring gate and a support plate arch bridge-shaped riser; the upper end of the support plate cylindrical pouring gate is connected with the arc-shaped cross pouring gate, and the lower end of the support plate cylindrical pouring gate is connected with the casting support plate through a support plate arch bridge-shaped riser.
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