CN112548045A - Stacking casting mold and method for reducing deformation of thin-wall flat plate casting - Google Patents

Stacking casting mold and method for reducing deformation of thin-wall flat plate casting Download PDF

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Publication number
CN112548045A
CN112548045A CN202011367165.4A CN202011367165A CN112548045A CN 112548045 A CN112548045 A CN 112548045A CN 202011367165 A CN202011367165 A CN 202011367165A CN 112548045 A CN112548045 A CN 112548045A
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China
Prior art keywords
longitudinal
pouring
exhaust
gate
casting
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CN202011367165.4A
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Chinese (zh)
Inventor
陈征
汪裕炉
段良杰
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Shaanxi Wanda Auto Parts Manufacturing Co ltd
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Shaanxi Wanda Auto Parts Manufacturing Co ltd
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Priority to CN202011367165.4A priority Critical patent/CN112548045A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/20Stack moulds, i.e. arrangement of multiple moulds or flasks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082Sprues, pouring cups

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The invention provides a stack casting mold and a stack casting method for reducing deformation of a thin-wall flat plate casting, and solves the problems that the surface flatness of a casting product is poor, exhaust is not smooth, efficiency is low and only one product can be cast at one time due to the adoption of a horizontal side injection method in the conventional thin-wall large flat plate structure. The die comprises N longitudinal templates which are identical in shape and are buckled side by side, wherein N is an integer larger than 2; the middle parts of the adjacent longitudinal formworks are enclosed to form a product cavity; a pouring through opening communicated with the product cavity is formed in the front side edge of each longitudinal template; the upper end of the rear side edge of each longitudinal template is provided with an exhaust through hole communicated with the product cavity; a longitudinal pouring gate is arranged at the buckling position of two adjacent longitudinal formworks and is communicated with the pouring through hole; and an exhaust passage is arranged at the buckling position of two adjacent longitudinal templates and is communicated with the exhaust through hole. The invention adopts a side edge vertical pouring mode, can pour a plurality of casting products at one time, and has good surface flatness of the casting products.

Description

Stacking casting mold and method for reducing deformation of thin-wall flat plate casting
Technical Field
The invention relates to a thin-wall flat casting technology, in particular to a superposition casting mold and a method for reducing deformation of a thin-wall flat casting.
Background
The casting is a metal molding object obtained by various casting methods, namely, a melted liquid metal is poured into a prepared casting mould by pouring, injecting, sucking or other casting methods, and after cooling, the casting is ground and other subsequent processing means, and the object with certain shape, size and performance is obtained.
As shown in figure 1, the slag pushing plate of the combustion chamber is a 7mm thin-wall ductile iron member and has a thin-wall large flat plate structure as a whole. In the prior art, a horizontal side injection method is adopted for casting the slag pushing plate, a casting mold is horizontally placed, liquid metal enters a cavity from an opening at one side of the upper part of the casting mold, the bottom surface of the cavity rises to an upper plane when the liquid metal is filled, and the slag pushing plate is of a thin-wall large flat plate structure; and the air exhaust in the cavity is not smooth, the upper surface of a cast product (slag pushing plate) is easy to shrink after pouring, and the size precision of the cast product cannot be well ensured. In addition, the existing horizontal side injection method can only cast one casting product at a time, so that the efficiency is low.
Disclosure of Invention
The method aims to solve the problems that the surface flatness of a casting product is poor, the exhaust is not smooth and the efficiency is low due to the adoption of a horizontal side injection method in the conventional thin-wall large flat plate structure; and the technical problem that only one product can be cast at a time, the invention provides a stack casting mould and a method for reducing deformation of a thin-wall flat plate casting.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a stack casting mould for reducing deformation of a thin-wall flat plate casting is characterized in that: the template comprises N longitudinal templates which are identical in shape and are buckled side by side, wherein N is an integer larger than 2; the middle parts of two adjacent longitudinal formworks form a product cavity;
a pouring through opening communicated with the product cavity is formed in the front side edge of each longitudinal template;
the upper end of the rear side edge of each longitudinal template is provided with an exhaust through hole communicated with the product cavity;
a longitudinal pouring gate is arranged at the buckling position of two adjacent longitudinal formworks and is communicated with the pouring through hole;
and an exhaust passage is arranged at the buckling position of two adjacent longitudinal templates and is communicated with the exhaust through hole.
Furthermore, two pouring through openings are formed in each longitudinal formwork and are respectively positioned in the middle and at the lower end of the front side edge of each longitudinal formwork; the pouring through holes at the lower ends of the front sides of all the longitudinal formworks are communicated to form a first cross gate, the pouring through holes in the middle of the front sides of all the longitudinal formworks are communicated to form a second cross gate, and the first cross gate and the second cross gate are communicated with the longitudinal gate.
Furthermore, an exhaust groove communicated with the product cavity is formed in the front side of the upper end of each longitudinal template;
and the middle part of the upper end of each longitudinal template is provided with an exhaust passage communicated with the exhaust through hole and the exhaust groove.
Furthermore, the number of the N is 5-9, the number of the longitudinal runners is 1, and the longitudinal runners are located on the two longitudinal templates in the middle; the exhaust passage is 2 that arrange side by side, and is located the both sides of indulging the water respectively.
Furthermore, a plurality of longitudinal runners are arranged in parallel along the central line direction of the first transverse runner, and 2-10 longitudinal templates are arranged between every two adjacent longitudinal runners;
the exhaust passage is a plurality of and arranges side by side along the central line direction of the first cross gate, and 2-10 longitudinal templates are arranged between two adjacent exhaust passages.
Furthermore, 3-6 longitudinal formworks are arranged between two adjacent longitudinal pouring channels;
3-4 longitudinal templates are arranged between every two adjacent exhaust passages;
furthermore, all the longitudinal runners are uniformly arranged along the central line direction of the first transverse runner;
all the exhaust passages are uniformly arranged along the central line direction of the first cross gate.
Furthermore, the number of the exhaust passages is greater than that of the longitudinal pouring channels;
the longitudinal pouring gate and the exhaust passage are arranged along the central line direction of the first transverse pouring gate in a staggered mode.
Furthermore, the longitudinal pouring gate and the exhaust passage are arranged in a staggered mode; the thickness of the product cavity is less than 10 mm.
Meanwhile, the invention provides a superposition casting method for reducing deformation of a thin-wall flat plate casting, which is characterized by comprising the following steps of:
1) buckling the N longitudinal formworks side by side;
2) sealing the pouring through openings on the two outermost longitudinal formworks;
3) injecting molten metal from the longitudinal pouring channel, and pouring the molten metal into the product cavity through the longitudinal pouring channel and the first horizontal pouring channel in sequence;
4) when the molten metal in the product cavity reaches the bottom surface of the through opening poured into the middle part of the front side edge of the longitudinal template, the molten metal is poured into the product cavity from the first horizontal pouring gate and the second horizontal pouring gate through the longitudinal pouring gate;
5) stopping pouring the molten metal until the exhaust passage is filled with the molten metal, and cooling;
6) and after cooling, dismantling the longitudinal template, and removing structures formed at the longitudinal pouring gate, the first transverse pouring gate, the second transverse pouring gate and the exhaust passage to obtain N-1 casting products.
Compared with the prior art, the invention has the advantages that:
1. the overlapped casting mold comprises a plurality of side-by-side buckled longitudinal formworks, and a plurality of casting products at the positions can be poured at one time by adopting a side edge vertical pouring mode.
2. According to the invention, the through holes are respectively poured in the middle part and the lower end of the front side edge of the longitudinal template, the metal liquid is poured into the product cavity through the two pouring through holes which are arranged one above the other and have the function of stirring the metal liquid in the product cavity, so that the metal liquid in the product cavity is uniformly mixed, the temperature of the metal liquid in the product cavity is ensured to be balanced, and further the mechanical property of a formed casting product is ensured to be balanced; and in the pouring process, gas in the product cavity is discharged from the exhaust through hole, and the exhaust through hole forms a feeding head, so that the compactness of the casting product is ensured, and the surface flatness of the casting product is good.
3. In order to improve the exhaust effect, the longitudinal template is also provided with an exhaust groove and an exhaust channel, and gas in the product cavity can simultaneously flow through the exhaust through hole and the exhaust groove and is exhausted through the exhaust channel.
3. When the number of the longitudinal formworks is 5-9, in order to improve the pouring effect and uniformity, the longitudinal pouring gates are positioned on the two longitudinal formworks in the middle, and the number of the exhaust passages is 2 and the exhaust passages are respectively positioned on two sides of the longitudinal pouring gates.
4. When the number of the longitudinal formworks of the stacked casting mold is large, the longitudinal pouring gates and the exhaust passages are multiple, 2-10 longitudinal formworks and 3-6 longitudinal formworks are arranged between every two adjacent longitudinal pouring gates, and the requirements on casting uniformity and exhaust can be met.
Drawings
FIG. 1 is a schematic structural diagram of a slag pushing plate of a conventional combustion chamber;
FIG. 2 is a schematic structural view of an embodiment of the invention of a stack casting mold for reducing deformation of thin-walled slab castings;
FIG. 3 is a schematic view of a product configuration of a stack casting mold embodiment of the present invention for reducing deformation of thin-walled slab castings;
wherein the reference numbers are as follows:
1-longitudinal formwork, 11-pouring through hole, 12-first cross pouring channel, 13-second cross pouring channel, 14-exhaust through hole, 15-exhaust groove, 16-exhaust channel, 2-longitudinal pouring channel, 3-exhaust channel, 4-casting product, 41-longitudinal pouring channel casting structure, 42-first cross pouring channel casting structure, 43-second cross pouring channel casting structure and 44-exhaust channel casting structure.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
Example one
As shown in fig. 2, a stack casting mold for reducing deformation of a thin-wall slab casting adopts a side vertical casting technology, and comprises 6 longitudinal formworks 1, 1 longitudinal pouring gate 2 and 2 exhaust passages 3 which are identical in shape and are buckled side by side; the adjacent two longitudinal templates 1 are sealed and buckled by adopting bulges and grooves, a product cavity with the same shape and size as the casting product 4 is formed by the middle part of the buckled longitudinal templates, and the thickness of the product cavity is less than 10 mm;
the middle part and the lower end of the front side edge of each longitudinal template 1 are respectively provided with a pouring through hole 11 communicated with the product cavity; the lower end pouring through holes 11 of the front side edges of all the longitudinal formworks 1 are communicated to form a first cross gate 12, and the middle pouring through holes 11 of the front side edges of all the longitudinal formworks 1 are communicated to form a second cross gate 13;
the front part of the upper end of each longitudinal template 1 is provided with an exhaust groove 15, the rear part of the upper end is provided with the exhaust groove 15, the middle part of the upper end is provided with an exhaust passage 16 communicated with an exhaust through hole 14 and the exhaust groove 15, and the exhaust through hole 14 and the exhaust groove 15 are both communicated with a product cavity;
as shown in fig. 2, the 6 longitudinal formworks 1 are respectively a first longitudinal formwork, a second longitudinal formwork, a third longitudinal formwork, a fourth longitudinal formwork, a fifth longitudinal formwork and a sixth longitudinal formwork which are sequentially arranged from left to right, the longitudinal runner 2 is arranged at the buckling position of the third longitudinal formwork and the fourth longitudinal formwork, the longitudinal runner 2 is arranged at the front side of the product cavity, and the longitudinal runner 2 is opened at the upper end surface of the longitudinal formwork 1 and is communicated with the first transverse runner 12 and the second transverse runner 13;
the 2 exhaust passages 3 are respectively arranged at the buckling positions of the first longitudinal template and the second longitudinal template and the buckling positions of the fifth longitudinal template and the sixth longitudinal template, the exhaust passages 3 are arranged on the rear side above the product cavity, and the openings of the exhaust passages 3 are formed in the upper end surfaces of the longitudinal templates 1 and are communicated with the exhaust through holes 14.
The mould of the embodiment further comprises 1 longitudinal pouring inlet pipe and 2 exhaust passage 3 outlet pipes which are arranged above the longitudinal template 1, wherein the 1 longitudinal pouring inlet pipe is communicated with the longitudinal pouring gate 2, and the 2 exhaust passage 3 outlet pipes are respectively communicated with the 2 exhaust passages 3.
Based on the above stack casting mold for reducing deformation of the thin-wall slab casting, the embodiment provides a stack casting method for reducing deformation of the thin-wall slab casting, which includes the following steps:
1) buckling 6 longitudinal formworks 1 side by side;
2) sealing the middle parts and the lower ends of the front side edges of the first longitudinal template and the sixth longitudinal template with the pouring through holes 11 and sealing the exhaust through holes on the first longitudinal template and the sixth longitudinal template;
3) injecting molten iron from the longitudinal pouring gate 2, and pouring the molten iron into the product cavity through the longitudinal pouring gate 2 and the first horizontal pouring gate 12 in sequence;
4) when molten iron in the product cavity is level with the bottom surface of the pouring through hole 11 in the middle of the front side edge of the longitudinal template 1, the molten iron is poured into the product cavity from the first horizontal pouring gate 12 and the second horizontal pouring gate 13 through the longitudinal pouring gate 2;
5) when the molten iron flows to the exhaust passage 3, the molten iron is stopped to be poured,
6) cooling after the pouring is finished;
7) after cooling, the longitudinal formwork 1 is removed, and a product structure shown in figure 3 is formed;
8) and removing parts of a longitudinal pouring channel casting structure 41, a first transverse pouring channel casting structure 42, a second transverse pouring channel casting structure 43 and an exhaust passage casting structure 44 which are formed at the longitudinal pouring channel 2, the first transverse pouring channel 12, the second transverse pouring channel 13 and an exhaust part (an exhaust groove, an exhaust passage and an exhaust through hole) to obtain 5 casting products 4.
This embodiment accessible one indulges runner 2 and pours to 5 product chamber simultaneously, at first the molten iron is from indulging runner 2, first runner 12 gets into product chamber bottom, fill to product intracavity portion's molten iron by lower up again and reach with vertical template 1 front side middle part pouring when running through 11 bottom surfaces parallel and level, the molten iron gets into product chamber bottom and middle part respectively from first runner 12 and second runner 13, turn the molten iron in the product chamber, make the molten iron misce bene in the product chamber, guarantee the molten iron temperature equilibrium in the product chamber, and then guarantee 4 mechanical properties of shaping foundry goods product are balanced. And in the pouring process, gas in the product cavity is directly exhausted from the exhaust groove 15, the exhaust channel 16, the exhaust through hole 14 and the exhaust through hole 14 through the exhaust passage 3, and the exhaust through hole 14 and the exhaust groove 15 form a feeding head, so that the compactness of the casting product 4 is ensured, and the surface flatness of the casting product 4 is good.
Example two
The difference from the first embodiment is that: the longitudinal formworks 1 are 12 buckled side by side, the longitudinal runners 2 are 3, and the exhaust passages 3 are 6; 3 indulge runner 2 and evenly set up along first cross gate 12 direction, 6 exhaust passages 3 evenly set up along first cross gate 12 direction, obtain 11 foundry goods products 4.
EXAMPLE III
The difference from the first embodiment is that: the longitudinal formworks 1 are 50 buckled side by side, the longitudinal runners 2 are 10, and the exhaust passages 3 are 16; the 10 longitudinal pouring channels 2 are uniformly arranged along the direction of the first cross pouring channel 12, and the 16 exhaust channels 3 are uniformly arranged along the direction of the first cross pouring channel 12, so that 49 casting products 4 are obtained.
Example four
The difference from the first embodiment is that: in the embodiment, 6 longitudinal formworks 1 which are buckled in parallel are taken as a mould unit, m mould units are arranged side by side, m is an integer which is more than or equal to 2, and in the overlapping casting method, the pouring through openings 11 are only sealed at the middle parts and the lower ends of the front side edges of the two outermost longitudinal formworks 1, so that 5m casting products 4 are obtained.
EXAMPLE five
The difference from the first embodiment is that: the front side pouring through opening 11 of each longitudinal formwork 1 is one and is located in the middle of the front side, and in other embodiments, can be located at the lower end or the middle lower part.
The above description is only for the purpose of describing the preferred embodiments of the present invention and does not limit the technical solutions of the present invention, and any known modifications made by those skilled in the art based on the main technical concepts of the present invention fall within the technical scope of the present invention.

Claims (10)

1. The utility model provides a reduce fold casting die of thin wall plate casting deformation which characterized in that: the template comprises N longitudinal templates (1) which are identical in shape and are buckled side by side, wherein N is an integer larger than 2; the middle parts of two adjacent longitudinal formworks (1) are enclosed to form a product cavity;
a pouring through opening (11) communicated with the product cavity is formed in the front side edge of each longitudinal formwork (1);
the upper end of the rear side edge of each longitudinal template (1) is provided with an exhaust through hole (14) communicated with the product cavity;
a longitudinal pouring channel (2) is arranged at the buckling position of two adjacent longitudinal formworks (1), and the longitudinal pouring channel (2) is communicated with the pouring through hole (11);
an exhaust passage (3) is arranged at the buckling position of two adjacent longitudinal formworks (1), and the exhaust passage (3) is communicated with an exhaust through hole (14).
2. The stack casting mold for reducing deformation of thin-walled slab castings according to claim 1, wherein: two pouring through openings (11) are formed in each longitudinal formwork (1) and are respectively positioned in the middle and at the lower end of the front side edge of each longitudinal formwork (1); the front side edge lower end pouring through holes (11) of all the longitudinal formworks (1) are communicated to form a first cross gate (12), the front side edge middle pouring through holes (11) of all the longitudinal formworks (1) are communicated to form a second cross gate (13), and the first cross gate (12) and the second cross gate (13) are communicated with the longitudinal gate (2).
3. The stack casting mold for reducing deformation of thin-walled slab castings according to claim 1, wherein: an exhaust groove (15) communicated with the product cavity is formed in the front side of the upper end of each longitudinal template (1);
the middle part of the upper end of each longitudinal template (1) is provided with an exhaust passage (16) communicated with the exhaust through hole (14) and the exhaust groove (15).
4. A stack casting mold for reducing deformation of thin-walled sheet castings according to claim 1, 2 or 3, wherein: the number of the N is 5-9, the number of the longitudinal pouring channels (2) is 1, and the longitudinal pouring channels are positioned on the two longitudinal formworks (1) in the middle; the exhaust passages (3) are arranged in parallel and are respectively positioned on two sides of the longitudinal pouring gate (2).
5. A stack casting mold for reducing deformation of thin-walled slab castings according to claims 2 or 3, characterized in that: the number of the longitudinal pouring channels (2) is multiple, the longitudinal pouring channels are arranged side by side along the central line direction of the first transverse pouring channel (12), and 2-10 longitudinal formworks (1) are arranged between every two adjacent longitudinal pouring channels (2);
the exhaust passages (3) are arranged side by side along the central line direction of the first cross gate (12), and 2-10 longitudinal templates (1) are arranged between every two adjacent exhaust passages (3).
6. The stack casting mold for reducing deformation of thin-walled slab castings according to claim 5, wherein: 3-6 longitudinal formworks (1) are arranged between two adjacent longitudinal pouring channels (2);
3-4 longitudinal templates (1) are arranged between two adjacent exhaust passages (3).
7. The stack casting mold for reducing deformation of thin-walled slab castings according to claim 6, wherein: all the longitudinal runners (2) are uniformly arranged along the central line direction of the first transverse runner (12);
all the exhaust passages (3) are uniformly arranged along the central line direction of the first cross pouring gate (12).
8. The stack casting mold for reducing deformation of thin-walled slab castings according to claim 6, wherein: the number of the exhaust passages (3) is greater than that of the longitudinal pouring channels (2);
the longitudinal pouring gate (2) and the exhaust duct (3) are arranged along the central line direction of the first horizontal pouring gate (12) in a staggered mode.
9. The stack casting mold for reducing deformation of thin-walled slab castings according to claim 1, wherein: the longitudinal pouring gate (2) and the exhaust passage (3) are arranged in a staggered manner; the thickness of the product cavity is less than 10 mm.
10. The overlapping casting method for reducing deformation of the thin-wall flat plate casting is characterized by comprising the following steps of:
1) buckling N longitudinal formworks (1) side by side;
2) sealing the pouring through holes (11) on the two outermost longitudinal formworks (1);
3) injecting molten metal from the longitudinal pouring gate (2), and pouring the molten metal into the product cavity through the longitudinal pouring gate (2) and the first horizontal pouring gate (12) in sequence;
4) when the molten metal in the product cavity reaches the bottom surface of the through opening (11) poured into the middle part of the front side edge of the longitudinal template (1), the molten metal is poured into the product cavity from the first horizontal pouring gate (12) and the second horizontal pouring gate (13) through the longitudinal pouring gate (2);
5) stopping pouring the molten metal until the exhaust passage (3) is filled with the molten metal, and cooling;
6) and after cooling, detaching the longitudinal template (1), and removing structures formed at the longitudinal pouring gate (2), the first horizontal pouring gate (12), the second horizontal pouring gate (13) and the exhaust passage (3) to obtain N-1 casting products (4).
CN202011367165.4A 2020-11-27 2020-11-27 Stacking casting mold and method for reducing deformation of thin-wall flat plate casting Pending CN112548045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011367165.4A CN112548045A (en) 2020-11-27 2020-11-27 Stacking casting mold and method for reducing deformation of thin-wall flat plate casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011367165.4A CN112548045A (en) 2020-11-27 2020-11-27 Stacking casting mold and method for reducing deformation of thin-wall flat plate casting

Publications (1)

Publication Number Publication Date
CN112548045A true CN112548045A (en) 2021-03-26

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ID=75045144

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011367165.4A Pending CN112548045A (en) 2020-11-27 2020-11-27 Stacking casting mold and method for reducing deformation of thin-wall flat plate casting

Country Status (1)

Country Link
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