CN109047716B - Drainage structure for vertical extrusion casting mold - Google Patents
Drainage structure for vertical extrusion casting mold Download PDFInfo
- Publication number
- CN109047716B CN109047716B CN201811067213.0A CN201811067213A CN109047716B CN 109047716 B CN109047716 B CN 109047716B CN 201811067213 A CN201811067213 A CN 201811067213A CN 109047716 B CN109047716 B CN 109047716B
- Authority
- CN
- China
- Prior art keywords
- drainage
- wall thickness
- boss
- casting mold
- mould
- 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.)
- Active
Links
- 238000005266 casting Methods 0.000 title claims abstract description 28
- 238000001125 extrusion Methods 0.000 title abstract description 13
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 22
- 238000009716 squeeze casting Methods 0.000 claims description 11
- 238000007688 edging Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000005058 metal casting Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a drainage structure for a vertical extrusion casting die, which comprises an upper die and a lower die, wherein a pouring channel is arranged on the lower die, a boss is arranged on the upper die above the pouring channel, and a drainage groove is arranged on the boss. The drainage structure for the vertical extrusion casting mold is characterized in that liquid metal is filled from bottom to top along the pouring gate, the top of the pouring gate is an in-gate, the liquid metal enters the cavity through the in-gate and fills the cavity, the drainage groove is arranged in front of a part with a lower filling speed, under the drainage effect of the drainage groove, the liquid metal preferentially flows to the part with the lower filling speed, the uniform filling speed of each part is ensured, and cold insulation defects are prevented.
Description
Technical Field
The invention relates to the field of casting molds, in particular to a drainage structure for a vertical extrusion casting mold.
Background
Squeeze casting is a process in which a liquid or semi-solid metal is poured into a metal mold and then subjected to high pressure to solidify it under pressure to obtain a blank or part. Generally, the pouring gate of vertical extrusion casting is cylindrical, and liquid metal is slowly and stably filled from bottom to top, which means that the mode that molten aluminum enters a cavity through an in-gate in vertical extrusion casting is fixed, so that defects cannot be reduced by controlling the flow direction of molten aluminum through changing the shape and the size of the pouring gate and the in-gate like in horizontal extrusion casting, and the quality of products can be improved only by adjusting extrusion casting parameters such as casting speed, pressure, temperature and the like. Some parts are affected by the structure and the wall thickness, the speed and the direction of the metal liquid flow are inconsistent in the process of filling the cavity, the low-speed liquid flow is blocked and wrapped by the high-speed liquid flow, and the filling of the low-speed liquid flow is blocked, so that cold insulation defects of the parts are often caused. Cold shut defects refer to the point where the metal streams meet in the mold cavity, and the incomplete fusion of the metal streams results in a through or non-through gap in the casting. The cold-proof defect has a development trend under the action of external force, is easy to cause cracks, and reduces the strength of castings. The elimination of this defect must be through the rational design of the mold.
Disclosure of Invention
The invention aims to provide a drainage structure for a vertical extrusion casting die, which can eliminate cold insulation defects in vertical extrusion casting.
The technical scheme adopted by the invention is as follows:
A drainage structure for vertical squeeze casting mould includes mould and lower mould, is equipped with the runner on the lower mould, and the upper mould is equipped with the boss in the upper position of runner, is equipped with the drainage groove on the boss.
Further as an improvement of the technical scheme of the invention, a cavity is formed between the upper die and the lower die, liquid metal is cast into the cavity to form a casting, two large-wall-thickness parts are arranged on the casting, a small-wall-thickness part is arranged between the two large-wall-thickness parts, the wall thickness of the large-wall-thickness part is larger than that of the small-wall-thickness part, and the drainage groove extends from the center of the boss to the front of the small-wall-thickness part.
Further as an improvement of the technical scheme of the invention, the height of the boss is equal to the wall thickness of the casting near the pouring channel.
Further as the improvement of the technical scheme of the invention, the invention also comprises a drainage column, the boss is arranged on the drainage column, and the upper die is provided with a mounting hole for mounting and fixing the drainage column.
Further as an improvement of the technical scheme of the invention, the top of the drainage column is provided with a edging clamping head for positioning.
Further as an improvement of the technical scheme of the invention, the depth of the drainage groove deepens from the center of the boss to the edge, and the width of the drainage groove narrows from the center of the boss to the edge.
Further as an improvement of the technical scheme of the invention, the boss is in the shape of a round table.
Further as an improvement of the technical scheme of the invention, the large-wall-thickness part is a reinforcing rib.
The invention has the beneficial effects that: this a drainage structure for vertical squeeze casting mould, liquid metal is along pouring gate from down up filling, and the top of pouring gate is the header, and liquid metal gets into the die cavity and fills the die cavity through the header, and the place ahead of the slower part of filling speed is located to the drainage groove, under the drainage effect of drainage groove, liquid metal preferential flow direction filling speed is slower part, guarantees that each part filling speed is even, prevents to produce cold shut defect.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a casting according to an embodiment of the present invention;
FIG. 3 is a top view of an embodiment of the present invention;
FIG. 4 is a schematic view of a three-dimensional structure of a drainage column, a boss and a drainage groove according to an embodiment of the present invention;
Fig. 5 is a schematic structural view of a drainage groove according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 5, the invention relates to a drainage structure for a vertical squeeze casting die, which comprises an upper die 1 and a lower die 2, wherein a pouring channel 21 is arranged on the lower die 2, a boss 31 is arranged above the pouring channel 21 on the upper die 1, and a drainage groove 32 is arranged on the boss 31.
This a drainage structure for vertical squeeze casting mould, liquid metal fills from down up along runner 21, and runner 21's top is the header, and liquid metal gets into die cavity 4 and fills die cavity 4 through the header, and drainage groove 32 locates the place ahead of the slower part of filling speed, under the drainage effect of drainage groove 32, liquid metal preferentially flows to the slower part of filling speed, guarantees that each part filling speed is even, prevents to produce cold shut defect.
The turbulence structure is mainly used for vertical extrusion casting molds, and the inner pouring gate is positioned in the middle of the casting 5.
In a preferred embodiment of the present invention, a cavity 4 is formed between the upper die 1 and the lower die 2, a casting 5 is formed by casting a liquid metal into the cavity 4, two large wall thickness portions 51 are provided on the casting 5, a small wall thickness portion 52 is provided between the two large wall thickness portions 51, the wall thickness at the large wall thickness portion 51 is larger than the wall thickness at the small wall thickness portion 52, and the drainage groove 32 extends from the center of the boss 31 to the front of the small wall thickness portion 52. Generally, the rib thick part in the casting 5 is the large wall thickness part 51, in the traditional extrusion casting, because the wall thickness of the large wall thickness part 51 is large, the resistance of the liquid metal entering the part is small, the liquid metal preferentially flows into the position of the large wall thickness part 51 and then flows back, the junction is formed at the small wall thickness part 52, the filling of the subsequent liquid metal is blocked, the gas cannot be discharged, and the junction of the liquid metal is poor, so that the cold shut defect is formed. After the boss 31 and the drainage groove 32 are added, as shown by an arrow in fig. 3, under the guiding action of the drainage groove 32, the flow direction of the liquid metal is changed and preferentially flows into the position of the small wall thickness part 52, so that the filling speed of the liquid metal at the small wall thickness part 52 is increased, the filling speeds of the liquid metal at the small wall thickness part 52 and the large wall thickness part 51 are slightly different, the liquid metal is stably filled, and uniformly spreads from the center to the outside, so that the confluence at the small wall thickness part 52 is avoided, and the cold insulation defect is prevented.
As a preferred embodiment of the invention, the height of the boss 31 is equal to the wall thickness b of the casting 5 in the vicinity of the runner 21.
As a preferred embodiment of the present invention, the present invention further comprises a drainage column 33, the boss 31 is provided on the drainage column 33, and the upper die 1 is provided with a mounting hole for mounting and fixing the drainage column 33. The drainage column 33 can be made into an insert to be inlaid in the upper die 1, and can also be fixed on the upper die 1in a welding mode.
As a preferred embodiment of the present invention, a chamfered chuck 34 for positioning is provided at the top of the drainage column 33, the radius of the chamfered chuck 34 is slightly larger than that of the drainage column 33, and a chamfered positioning portion 341 is provided on the chamfered chuck 34. Because the direction of the drainage groove 32 points to the position of the small wall thickness part 52, the edging clamping head 34 is beneficial to the rapid positioning and installation of the drainage column 33, and the phenomenon that the direction of the drainage groove 32 deviates from the position of the small wall thickness part 52 is prevented, so that the drainage effect is not ideal is avoided.
As a preferred embodiment of the present invention, the depth of the drainage groove 32 is deepened from the center of the boss 31 to the edge, and the width of the drainage groove 32 is narrowed from the center of the boss 31 to the edge. The gradual transition of the depth and width of the draft trough 32 from center to edge facilitates a smoother transition of the liquid metal flow to the small wall thickness portion 52.
As a preferred embodiment of the present invention, the boss 31 is shaped as a truncated cone, and the diameter of the boss 31 gradually decreases from the top to the bottom.
In a preferred embodiment of the present invention, the large-thickness portion 51 is a reinforcing rib.
The number of drainage grooves 32 in the present drainage structure may be set according to the number of the large wall thickness portions 51 and the small wall thickness portions 52.
The application is of course not limited to the embodiments described above, but equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the application, which are intended to be included within the scope of the application as defined in the appended claims.
Claims (6)
1. A drainage structure for vertical squeeze casting mould, its characterized in that: including last mould (1) and lower mould (2), be equipped with runner (21) on lower mould (2), the upper mould (1) is equipped with boss (31) in the top position of runner (21), be equipped with drainage groove (32) on boss (31), form die cavity (4) between upper mould (1) and lower mould (2), with liquid metal casting extremely die cavity (4) form foundry goods (5), be equipped with two big wall thickness portions (51) on foundry goods (5), two be equipped with between big wall thickness portion (51) little wall thickness portion (52), the wall thickness of big wall thickness portion (51) department is greater than the wall thickness of little wall thickness portion (52) department, drainage groove (32) are by boss (31) center extension to the place ahead of little wall thickness portion (52), the degree of depth of drainage groove (32) deepens to the edge by the center of boss (31), the width of drainage groove (32) is narrowed to the edge by the center of boss (31).
2. The drainage structure for a vertical squeeze casting mold according to claim 1, wherein: the height of the boss (31) is equal to the wall thickness of the casting (5) near the pouring channel (21).
3. The drainage structure for a vertical squeeze casting mold according to claim 1, wherein: still include drainage post (33), boss (31) are located on drainage post (33), go up mould (1) and be equipped with the mounting hole of installation fixed drainage post (33).
4. A drainage structure for a vertical squeeze casting mold according to claim 3, wherein: the top of the drainage column (33) is provided with a edging clamping head (34) for positioning.
5. The drainage structure for a vertical squeeze casting mold according to claim 1, wherein: the boss (31) is in the shape of a round table.
6. The drainage structure for a vertical squeeze casting mold according to claim 1, wherein: the large wall thickness portion (51) is a reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811067213.0A CN109047716B (en) | 2018-09-13 | 2018-09-13 | Drainage structure for vertical extrusion casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811067213.0A CN109047716B (en) | 2018-09-13 | 2018-09-13 | Drainage structure for vertical extrusion casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109047716A CN109047716A (en) | 2018-12-21 |
| CN109047716B true CN109047716B (en) | 2024-06-25 |
Family
ID=64760502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811067213.0A Active CN109047716B (en) | 2018-09-13 | 2018-09-13 | Drainage structure for vertical extrusion casting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109047716B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714455A (en) * | 1980-06-27 | 1982-01-25 | Honda Motor Co Ltd | Method for filling molten metal in vertical type casting machine |
| CN104942270A (en) * | 2014-03-27 | 2015-09-30 | 广东兴发铝业有限公司 | New energy automobile motor shell die |
| CN208960972U (en) * | 2018-09-13 | 2019-06-11 | 广州金邦液态模锻技术有限公司 | A kind of flow guiding structure for vertical extrusion casting mold |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2631667B2 (en) * | 1987-10-26 | 1997-07-16 | トピー工業株式会社 | Manufacturing method of light alloy wheel |
| JP2000176623A (en) * | 1998-12-18 | 2000-06-27 | Toshiba Corp | Formation of thin metallic parts, metallic mold device and housing device |
| JP2003266168A (en) * | 2002-03-15 | 2003-09-24 | Fujino Gijutsu Consultant:Kk | Vertical-type casting apparatus and vertical-type casting method |
| CN101618450B (en) * | 2009-07-21 | 2011-04-06 | 华南理工大学 | Method for indirect extrusion casting by utilizing filling of electromagnetic force and device thereof |
| CN106735080B (en) * | 2017-01-10 | 2021-06-01 | 河南明睿达机械制造有限公司 | Continuous extrusion die for aluminum pipe |
-
2018
- 2018-09-13 CN CN201811067213.0A patent/CN109047716B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714455A (en) * | 1980-06-27 | 1982-01-25 | Honda Motor Co Ltd | Method for filling molten metal in vertical type casting machine |
| CN104942270A (en) * | 2014-03-27 | 2015-09-30 | 广东兴发铝业有限公司 | New energy automobile motor shell die |
| CN208960972U (en) * | 2018-09-13 | 2019-06-11 | 广州金邦液态模锻技术有限公司 | A kind of flow guiding structure for vertical extrusion casting mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109047716A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208019398U (en) | Counter-pressure casting pouring gate structure | |
| CN216705871U (en) | Manufacturing die for producing cylinder threaded sleeve of plastic extruding machine by vertical injection-compression production line | |
| CN107838375A (en) | A kind of cast steel running gate system | |
| CN104325085A (en) | Gating system with multistage split transverse runners | |
| CN109047716B (en) | Drainage structure for vertical extrusion casting mold | |
| CN204171286U (en) | With the running gate system of multistage separable type cross gate | |
| CN101966559B (en) | Bottom casting system of ingate of circular cross section | |
| CN101966560B (en) | Bottom casting system of strip sectional inner runners | |
| CN109047717B (en) | Turbulent flow structure for vertical extrusion casting mold | |
| CN210877424U (en) | Casting support model structure capable of realizing rapid pouring | |
| CN111687376A (en) | Bottom pouring cap structure | |
| CN209578070U (en) | A kind of casting die for bend pipe casting | |
| CN217095633U (en) | Multi-runner low-pressure casting slag discharging mold for hub | |
| CN203495180U (en) | Main sprue and pouring gate structure for crank case die-casting molding | |
| CN109746398A (en) | A kind of casting die for bend pipe casting | |
| CN208960971U (en) | A kind of turbulence structure for vertical extrusion casting mold | |
| CN106216607B (en) | A kind of casting bottom pouring system | |
| CN206614003U (en) | Coupler body casting system | |
| CN212525926U (en) | Casting device of vertical line ductile iron casting mold | |
| CN208960972U (en) | A kind of flow guiding structure for vertical extrusion casting mold | |
| CN112548055A (en) | Device and method for semi-continuous casting of ultra-wide aluminum alloy slab ingot | |
| CN207787659U (en) | Die casting | |
| CN210755084U (en) | New energy automobile driving motor stator support die casting die | |
| CN110722108A (en) | Casting die utensil is used in casting of automobile clutch pressure disk | |
| CN108080569A (en) | A kind of lost foam casting processing method of vehicle front draft lug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |