CN203621405U - Girder casting die with thin-walled tube - Google Patents

Girder casting die with thin-walled tube Download PDF

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Publication number
CN203621405U
CN203621405U CN201320867169.8U CN201320867169U CN203621405U CN 203621405 U CN203621405 U CN 203621405U CN 201320867169 U CN201320867169 U CN 201320867169U CN 203621405 U CN203621405 U CN 203621405U
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China
Prior art keywords
crossbeam
sand mold
box
girder
casting die
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CN201320867169.8U
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Chinese (zh)
Inventor
陈寅
敖四海
于丹
王昌明
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Guizhou Aerospace Fenghua Precision Equipment Co Ltd
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Guizhou Aerospace Fenghua Precision Equipment Co Ltd
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Abstract

The utility model discloses a girder casting die with a thin-walled tube. The girder casting die comprises a bottom box, a lower box, a middle box, an upper box and a cover box which are put from bottom to top in sequence, wherein a core die is arranged between the lower box and the middle box; a group of horizontal runners and a longitudinal runner are arranged on a sand mold of the bottom box; sprue gates are arranged at the intersections of the horizontal runners and the longitudinal runner; a girder lower cavity is arranged at the top surface of a sand mold of the lower box; a group of longitudinally arranged inner runners are arranged at the bottom of the girder lower cavity; a group of vertical runners are arranged on the two sides of the girder lower cavity respectively and are connected with gap runners; a girder upper cavity is arranged on the bottom surface of a sand mold of the middle box; overlapping holes are formed in the two sides of the girder upper cavity; girder top cavities and core die positioning slots are formed in the top surface of the sand mold of the middle box and the bottom surface of a sand mold of the upper box; a riser is formed in the sand mold of the upper box. The girder casting die can ensure the internal quality of castings, is simple and convenient in modeling method, is easy in subsequent treatment of castings, can form batch production and has relatively high percent of pass.

Description

A kind of crossbeam casting die with thin-wall barrel
Technical field
the utility model relates to a kind of crossbeam casting die with thin-wall barrel, belongs to the crossbeam casting technology field that is connected with thin-wall barrel of complex contour.
Background technology
in construction machinery product, often to use a kind of crossbeam part with thin-wall barrel, this crossbeam part needs casting, and its material is ZM5, and condition of heat treatment is T5, and foundry goods type is II class.This crossbeam is cylindrical shape thin-wall part, and inner chamber is a cylinder machined surface.Part outside is non-machined surface, complex structure.Quality requirement is high, and foundry goods appointed part requires to carry out X-ray and fluorescent penetrating inspection inspection.
above-mentioned crossbeam foundry goods is just contrary with the structure of cabin body class foundry goods, is about 800 millimeters, 520 millimeters of the about φ of maximum outside diameter, and inner-cavity structure is simple and external structure complexity, if adopt the casting gravity-assist pouring mode of cabin body class foundry goods, is difficult to meet quality requirement.
Summary of the invention
the purpose of this utility model is, a kind of crossbeam casting die with thin-wall barrel is provided, and to meet the casting of the crossbeam with the thin-wall barrel requirement of complex contour, thereby overcomes the deficiencies in the prior art.
the technical solution of the utility model is:
a kind of crossbeam casting die with thin-wall barrel of the present utility model is that this crossbeam casting die comprises under casing, nowel, raising middle flask, top box and the top box put successively from the bottom to top, between nowel and raising middle flask, is provided with core; The sand mold of under casing is provided with one group of transverse flow channels and a longitudinal runner, and transverse flow channels is provided with sprue gate with the intersection point of longitudinal runner; The sand mold end face of nowel is provided with crossbeam bottom die cavity, and the bottom of crossbeam lower impressions is provided with the inner flow passage of one group of longitudinal arrangement, and crossbeam lower impressions both sides are respectively equipped with one group of vertical run, and vertical run is connected with slit flow channel; The sand mold bottom surface of raising middle flask is provided with crossbeam upper impression, and crossbeam upper impression both sides are provided with overlap joint hole; The sand mold end face of raising middle flask and the sand mold bottom surface of top box are provided with crossbeam top die cavity and core locating slot; The sand mold of top box is provided with and emits hole; Core two ends are provided with locating piece.
in aforementioned crossbeam casting die, described nowel overlaps with the axis of crossbeam cylindrical shell with the faying face of raising middle flask.
in aforementioned crossbeam casting die, described vertical run is coaxial with sprue gate.
in aforementioned crossbeam casting die, described core is cylindrical, and its diameter equals the internal diameter of crossbeam cylindrical shell.
compared with prior art, in casting die of the present utility model, crossbeam adopts horizontal moulding, and on the axis of crossbeam foundry goods thin-wall barrel, carrying out parting, parting place is provided with slit flow channel, adopts pressure reduction forging type, molten metal enters die cavity by pressure reduction from the sprue gate of casting die bottom, molten metal steadily rises in die cavity and in two side runners simultaneously, and then enters die cavity from both sides, is finally all full of casting mold.The thick large part of crossbeam cast top can obtain the feeding of rising head, has guaranteed the internal soundness of foundry goods.The utility model on the one hand can be guaranteed Internal Quality of Cast, and technological design on the other hand, formative method are easy, and foundry goods subsequent treatment is easy, can form batch to produce, and qualification rate is also higher.
Accompanying drawing explanation
fig. 1 is outline drawing structure chart of the present utility model;
fig. 2 is the profile of Fig. 1 tangent plane A;
fig. 3 is explosive view of the present utility model;
fig. 4 is the upward view of Fig. 2;
fig. 5 is the structural representation of crossbeam casting.
being labeled as in accompanying drawing: 1-under casing, 2-nowel, 3-raising middle flask, 4-top box, 5-top box, 6-core, 7-transverse flow channels, the longitudinal runner of 8-, 9-sprue gate, 10-crossbeam bottom die cavity, 11-inner flow passage, 12-vertical run, 13-slit flow channel, 14-crossbeam upper impression, 15-overlaps hole, 16-crossbeam top die cavity, 17-rising head, 18-locating piece, 19-core locating slot, 20-crossbeam, 21-thin-wall barrel.
The specific embodiment
below in conjunction with accompanying drawing, the utility model is described in further detail, but not as to any restriction of the present utility model.
the utility model is constructed according to following a kind of crossbeam casting method with thin-wall barrel, as shown in Figure 3, the method is in the time that the crossbeam 20 to thin-wall barrel 21 carries out casting, adopt by under casing 1, nowel 2, raising middle flask 3, the molding box of 5 five case compositions of top box 4 and top box is cast, at nowel 2, in raising middle flask 3 and top box 4, be provided with core 6, and will be disposed across molding box with the core of the crossbeam 20 of thin-wall barrel 21 for casting, in nowel 2, be provided with inner flow passage 11, vertical run 12 and slit flow channel 13, on under casing 1, be provided with sprue gate 9, on under casing, be provided with transverse flow channels 7 and longitudinal runner 8 simultaneously, be provided with sprue gate 9 at each transverse flow channels 7 and the intersection point of longitudinal runner 8, when casting, adopt the mode of pressure reduction cast, molten metal is injected from the sprue gate 9 of under casing 1 by pressuring method, make molten metal flow on the one hand under pressure the die cavity of nowel 2 by inner flow passage 11, then enter slit flow channel 13 along vertical run 12 by transverse flow channels 7 to two side flow on the other hand, water thin-wall barrel 21 parts that cast out crossbeam 20 by inner flow passage 11 and slit flow channel 13 simultaneously, the complex-shaped surface mould that continues to be upwards full of crossbeam 20 tops after the die cavity of thin-wall barrel 21 parts fills molten metal finally overflows from the rising head 17 of top box 1, in this way, can make the molten metal in rising head 17 carry out feeding to the complex-shaped surface mould at crossbeam 20 tops, after solidifying, cast molten metal can complete the crossbeam casting work with thin-wall barrel, moulding sand in the molding box being made up of under casing 1, nowel 2, raising middle flask 3, top box 4 and 5 five casees of top box all adopts resin sand of the prior art to carry out moulding.
the structural representation of the of the present utility model a kind of crossbeam casting die with thin-wall barrel building according to said method as shown in Figure 1 to 4, this crossbeam casting die comprises under casing 1, nowel 2, raising middle flask 3, top box 4 and the top box 5 put successively from the bottom to top, between nowel 2 and raising middle flask 3, is provided with core 6; As shown in Figure 3, the sand mold of under casing 1 is provided with one group of transverse flow channels 7 and a longitudinal runner 8, and transverse flow channels 7 is provided with sprue gate 9 with the intersection point of longitudinal runner 8; The sand mold end face of nowel 2 is provided with crossbeam bottom die cavity 10, and the bottom of crossbeam lower impressions 10 is provided with the inner flow passage 11 of one group of longitudinal arrangement, and crossbeam lower impressions 10 both sides are respectively equipped with one group of vertical run 12, and vertical run 12 is connected with slit flow channel 13; As shown in Figure 4, the sand mold bottom surface of raising middle flask 3 is provided with crossbeam upper impression 14, and crossbeam upper impression 14 both sides are provided with overlap joint hole 15; As shown in Figure 3 and Figure 4, the sand mold end face of raising middle flask 3 and the sand mold bottom surface of top box 4 are provided with crossbeam top die cavity 16 and core locating slot 19; The sand mold of top box 4 is provided with and emits hole 17; Core 6 two ends are provided with locating piece 18.Nowel 2 overlaps with the axis of crossbeam cylindrical shell with the faying face of raising middle flask 3.Vertical run 12 is coaxial with sprue gate 9.Core 6 is cylindrical, and its diameter equals the internal diameter of crossbeam cylindrical shell.
Embodiment
according to crossbeam casting structure quality requirement, determine that by analysis crossbeam foundry goods carries out traverse cast, shares under casing 1, nowel 2, raising middle flask 3, top box 4 and 5 five molding boxes of top box.In nowel 2, raising middle flask 3 and top box 4, be provided with core 6.Under casing 1 is provided with sprue gate 9, adopts pressure reduction pouring type, and molten metal injects from sprue gate 9 by pressurization.Under casing is provided with 7,6 transverse flow channels of 6 transverse flow channels 7 and vertically connects by a longitudinal runner 8, is provided with sprue gate 9 at each transverse flow channels 7 and the intersection point of longitudinal runner 8.Molten metal flows into the die cavity of nowel on the one hand by inner flow passage 11 at pressure-acting, then enter slit flow channel 13 along vertical run 12 by transverse flow channels 7 to two side flow on the other hand, pour into a mould thin-wall barrel 21 parts of crossbeam by inner flow passage 11 and slit flow channel 13 simultaneously.After the die cavity of thin-wall barrel 21 parts fills, molten metal continues above finally to overflow from the rising head of top box to the complex-shaped surface mould that is full of crossbeam top.By the molten metal in rising head, the complex-shaped surface mould at crossbeam top is carried out to feeding.Because crossbeam external shape is complicated and be non-machined surface, surface smoothness requires high, so the sand employing resin sand in molding box carries out moulding, to improve surface finish of casting.
when concrete enforcement, the moulding of crossbeam foundry goods is divided into 5 casees moulding, as shown in Figure 3.Moulding order completes the moulding of under casing 1, nowel 2, raising middle flask 3, top box 4 and top box 5 from the bottom to top.Modeling process is potting resin sand in sandbox, completes the moulding of die cavity and runner on resin sand, scrapes off unnecessary resin sand with scraper plate, after the resin sand in sandbox solidifies, sprinkle tap sand at mold cavity surface, and at mold cavity surface brushing paint, object is to improve the surface smoothness of foundry goods.When mould assembling, first under casing 1 is placed on platform, then aims at the position line nowel 2 that closes, then on nowel 2, put core 6, core 6 can be Split type structure, with can be overall structure, and then close raising middle flask 3 and top box 4, rising head 17 on top box 4, cover again top box 5, top box is a flat case, adopts greensand mo(u)lding, pricks venthole at rising head 17 positions.Finally with tie down screw, all sandbox locking being hung on to teeming stage pours into a mould.
after casting complete, need to carry out follow-up cutting and polishing to foundry goods, because foundry goods periphery is non-machined surface, ingate place is polishing carefully, but because ingate thickness, width are less, easily cutting, polishing, do not affect and produce by batch.After casting pouring completion, heat-treat, then carry out X-ray and fluorescent penetrating inspection, foundry goods meets internal soundness requirement completely.Then foundry goods is carried out to overall dimension line, foundry goods appearance and size meets dimensional requirement.At present, this product is produced by batch, and qualification rate is more than 85%.

Claims (4)

1. with a crossbeam casting die for thin-wall barrel, it is characterized in that: comprise under casing (1), nowel (2), raising middle flask (3), top box (4) and the top box (5) put successively from the bottom to top, between nowel (2) and raising middle flask (3), be provided with core (6); The sand mold of under casing (1) is provided with one group of transverse flow channels (7) and a longitudinal runner (8), and transverse flow channels (7) is provided with sprue gate (9) with the intersection point of longitudinal runner (8); The sand mold end face of nowel (2) is provided with crossbeam bottom die cavity (10), the bottom of crossbeam lower impressions (10) is provided with the inner flow passage (11) of one group of longitudinal arrangement, crossbeam lower impressions (10) both sides are respectively equipped with one group of vertical run (12), and vertical run (12) is connected with slit flow channel (13); The sand mold bottom surface of raising middle flask (3) is provided with crossbeam upper impression (14), and crossbeam upper impression (14) both sides are provided with overlap joint hole (15); The sand mold bottom surface of the sand mold end face of raising middle flask (3) and top box (4) is provided with crossbeam top die cavity (16) and core locating slot (19); The sand mold of top box (4) is provided with and emits hole (17); Core (6) two ends are provided with locating piece (18).
2. crossbeam casting die according to claim 1, is characterized in that: described nowel (2) overlaps with the axis of crossbeam cylindrical shell with the faying face of raising middle flask (3).
3. crossbeam casting die according to claim 2, is characterized in that: described vertical run (12) is coaxial with sprue gate (9).
4. crossbeam casting die according to claim 3, is characterized in that: described core (6) is for cylindrical, and its diameter equals the internal diameter of crossbeam cylindrical shell.
CN201320867169.8U 2013-12-26 2013-12-26 Girder casting die with thin-walled tube Active CN203621405U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320867169.8U CN203621405U (en) 2013-12-26 2013-12-26 Girder casting die with thin-walled tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320867169.8U CN203621405U (en) 2013-12-26 2013-12-26 Girder casting die with thin-walled tube

Publications (1)

Publication Number Publication Date
CN203621405U true CN203621405U (en) 2014-06-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741542A (en) * 2013-12-26 2015-07-01 贵州航天风华精密设备有限公司 Casting method of girder having thin-walled cylinder and casting mold
CN112935189A (en) * 2021-02-23 2021-06-11 贵州航天风华精密设备有限公司 Casting forming method for girder member with boss on periphery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741542A (en) * 2013-12-26 2015-07-01 贵州航天风华精密设备有限公司 Casting method of girder having thin-walled cylinder and casting mold
CN104741542B (en) * 2013-12-26 2017-02-08 贵州航天风华精密设备有限公司 Casting method of girder having thin-walled cylinder and casting mold
CN112935189A (en) * 2021-02-23 2021-06-11 贵州航天风华精密设备有限公司 Casting forming method for girder member with boss on periphery

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