CN104338898B - Hydraulic injection molding machine oil internal-circulation type solid plate casting technique - Google Patents

Hydraulic injection molding machine oil internal-circulation type solid plate casting technique Download PDF

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Publication number
CN104338898B
CN104338898B CN201310347232.XA CN201310347232A CN104338898B CN 104338898 B CN104338898 B CN 104338898B CN 201310347232 A CN201310347232 A CN 201310347232A CN 104338898 B CN104338898 B CN 104338898B
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China
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solid plate
injection molding
molding machine
circulation type
machine oil
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CN201310347232.XA
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CN104338898A (en
Inventor
李建军
蒋涛
谭万红
刘青平
郭兴雄
吴忠
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GUANGDONG BLOOMACHINE Co Ltd
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GUANGDONG BLOOMACHINE Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings

Abstract

The invention discloses a kind of hydraulic injection molding machine oil internal-circulation type solid plate casting technique, comprise the following steps: a. makes the mould of solid plate, using upper, middle and lower three-cavity moulding, three-cavity moulding includes the die mounting surface that die joint is solid plate of top box, raising middle flask and nowel, top box and raising middle flask;B. embedded steel tube in above-mentioned raising middle flask, steel pipe is corresponding with the hydraulic pressure oil duct in solid plate;C. arranging gate location on the nowel of step b, the bottom surface of solid plate is located at by cast gate, offers exhaust rising head and exhaust duct, and exhaust rising head is offered at top box, exhaust duct connection top box and raising middle flask;D. moulding by casting, by the top box of step c upward, nowel pour into a mould down, pouring temperature is 1320 DEG C~1350 DEG C.Hydraulic injection molding machine oil internal-circulation type solid plate casting technique disclosed by the invention has the advantages that material homogeneity is good, dense structure's property high, surface quality is good, casting qualified rate is high.

Description

Hydraulic injection molding machine oil internal-circulation type solid plate casting technique
Technical field
The invention belongs to the moulding process of a kind of fixed die plate of injection molding machine, especially relate to a kind of injection machine liquid Force feed internal-circulation type solid plate casting technique.
Background technology
Existing hydraulic injection molding machine oil internal-circulation type solid plate G. Iron Castings conventional casting techniques, it is common that use The die mounting surface of solid plate traditional pouring position down, uses side feed liquor, uses two during cast Case moulding and high temperature cast, the sand casting process scheme that pouring temperature is 1370 DEG C~1400 DEG C.This biography System sand casting process scheme is it is difficult to ensure that cover half when the oil pressure of hydraulic oil internal-circulation type is up to 30MPa The quality compactness of plate, uniformity requirements and embedded steel tube inwall cleanliness and the skill of surface smooth finish Art requirement, the hydraulic oil internal-circulation type solid plate surface quality of its casting is poor, embedded steel tube inwall clean Property is poor, bleb defect is many, casting leakage percent defective reaches the defective mode of 40%~50%.
Summary of the invention
It is an object of the invention to provide that a kind of material homogeneity is good, dense structure's property high, surface quality The hydraulic injection molding machine oil internal-circulation type solid plate casting technique good, casting qualified rate is high.
According to an aspect of the invention, it is provided a kind of hydraulic injection molding machine oil internal-circulation type solid plate casting Make technique, comprise the following steps:
A. make the mould of solid plate, use upper, middle and lower three-cavity moulding, three-cavity moulding include top box, in The die joint of case and nowel, top box and raising middle flask is positioned at the die mounting surface of solid plate;
B. embedded steel tube in above-mentioned raising middle flask, steel pipe is corresponding with the hydraulic pressure oil duct in solid plate;
C. arranging gate location on the mould of the solid plate of step b, the bottom surface of solid plate is located at by cast gate, Offering exhaust rising head and exhaust duct, exhaust rising head is offered at top box, exhaust duct connection top box and raising middle flask;
D. moulding by casting, by the top box of step c upward, nowel pour into a mould down, pouring temperature is 1320 DEG C~1350 DEG C.
The hydraulic injection molding machine oil internal-circulation type solid plate casting technique of the present invention, due to use three-cavity moulding, Be conducive to die cavity and the exhaust of iron liquid, efficiently reduce the pore in foundry goods;Embedded steel tube so that Steel pipe inner wall improves fineness in casting process;Pour into a mould ventricumbent pouring type owing to using, have Ensure that to effect the compactness of hydraulic pressure oil duct;Owing to using 1320 DEG C~the cast cold of 1350 DEG C, favorably In overcoming steel pipe inner wall core sand to sinter, be conducive to improving and stably pouring into a mould the crystallization nuclei of material, thus It is effectively improved the fineness of the consistency of material, cast(ing) surface, the casting of foundry goods is greatly improved Make qualification rate.
In some embodiments, chromite sand in steel pipe, can be full of, fire-resistant due to chromite sand Degree height, thus it is effectively guaranteed fineness and the cleanliness factor of hydraulic pressure oil duct inwall in casting process, Decrease artificial removal's steel pipe inner wall impurity operation.
In some embodiments, the hydraulic pressure oil duct in solid plate is interconnected, it is ensured that hydraulic pressure oil duct The flowing of interior hydraulic oil.
In some embodiments, the material of moulding by casting can be spheroidal graphite cast-iron, so that cover half Plate has good mechanical performance and reduces cost.
In some embodiments, the duration of pouring is 33s~39s, and hanging the back pouring time is 50s~60s, Thus ensure that in casting process, the compactness of the interior cast material of solid plate and uniformity.
In some embodiments, the hydraulic pressure oil duct in solid plate may be located at the bottom of solid plate.Liquid Force feed road does not get too close to cast gate in casting process, to avoid the sand in steel pipe not to be sintered;And by When cast, the proportion of iron liquid is more than the impurity thing such as slag, gas in iron liquid gently a lot of times, in order to slag in iron liquid, The floating of the impurity things such as gas, thus, improve the cause of the material of the hydraulic pressure oil duct being positioned at solid plate bottom Density.
In some embodiments, cast gate is multiple, and is evenly distributed in the bottom surface of solid plate The surrounding of the heart, thus, bonded hard ferrite magnet and material uniform thereof when being conducive to improving solid plate casting pouring Property.
In some embodiments, it is vented rising head and extends to the die mounting surface of solid plate, thus, It is easy to gas in casting process discharged by being vented rising head, improves the quality of foundry goods, reduce the pore of foundry goods Etc. defect.
Accompanying drawing explanation
Fig. 1 is the casting technique schematic diagram of the hydraulic injection molding machine oil internal-circulation type solid plate of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
Detailed description of the invention
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
Embodiment 1
See figures.1.and.2.The hydraulic injection molding machine oil internal-circulation type solid plate casting technique of the present invention, bag Include following steps:
A. make solid plate 1 mould, use three-cavity moulding, three-cavity moulding include top box, raising middle flask and The die joint of nowel, top box and raising middle flask is positioned at the die mounting surface 11 of solid plate, and nowel divides with raising middle flask Profile is positioned at the first side 13 and junction of the second side 14 of solid plate 1;
B. embedded steel tube in upper raising middle flask, steel pipe is corresponding with the hydraulic pressure oil duct 6 in solid plate 1;
C. setting cast gate 3 position on the nowel of step b, cast gate 3 is four, and is distributed uniformly In the surrounding at the center of the bottom surface 12 of solid plate 1, the distance at the center of four cast gates 3 and bottom surface 12 It is equal, exhaust rising head 4 offered by the top box at the mould of solid plate 1, and exhaust rising head 4 extends to determine The die mounting surface 11 of template 1, offers exhaust duct 5, and exhaust duct 5 connects top box and raising middle flask;
D. moulding by casting, by the top box of step c upward, nowel pour into a mould down, pouring temperature is 1320~1350 DEG C.
Solid plate 1 in the present embodiment may be used on the injection machine that clamp force is 200 tons.
Exhaust rising head 4 is 8~16, and exhaust duct 5 is positioned at the centre of solid plate 1.Cast gate 3 and injection Ingate 71 in the running gate system 7 of machine is connected, ingate 71 and the sprue of running gate system 7 72 are connected, during cast, and the uniform feed liquor of running gate system 7.Use cast cold, thus be conducive to gram Take the scab defect of steel pipe inner wall core sand sintering, be conducive to improving and stablizing the crystallization nuclei of material, enter And the consistency of material and the fineness of cast(ing) surface after improving cast.
Chromite sand it is full of in steel pipe.Hydraulic pressure oil duct 6 in solid plate 1 is interconnected.
The material of moulding by casting is spheroidal graphite cast-iron, the spheroidal graphite cast-iron trade mark can be QT400-15, QT450-10、QT500-7、QT600-3.Spheroidal graphite cast-iron be smelting after iron liquid, tapping temperature exists Carry out spheroidising under conditions of 1380 DEG C~1410 DEG C, process of setting adds the ball of 2mm~8mm Agent and the inoculation gained of the long-acting inovulant containing classes such as strontium calcium.Iron liquid spheroidising terminate after extremely The time of the casting complete of moulding by casting must not exceed 10 minutes.
The duration of pouring is 39s, and hanging the back pouring time is 50s.
Hydraulic pressure oil duct 6 in solid plate 1 is positioned at the bottom of solid plate 1, hydraulic pressure oil duct 6 and solid plate 1 On the through hole 8 for supporting cell guide be connected.In casting process, due to nowel down, cast gate 3 It is evenly distributed in the surrounding at the center of the bottom surface 12 of solid plate 1, and hydraulic pressure oil duct 6 is close to bottom surface 12, Thus, when cast, owing to the proportion of iron liquid is much larger than the proportion of impurity in iron liquid, so, it is ensured that The consistency of hydraulic pressure oil duct;Meanwhile, the impurity in iron liquid floats on top box, i.e. die mounting surface 11 institute In side, after casting completes, it is simple to impurity goes along with the allowance on die mounting surface 11 Remove and be removed, be conducive to this foundry goods to overcome the casting flaws such as pore, slag inclusion and sand holes so that casting After completing, the qualification rate of solid plate 1 improves 30%~45%.During cast, potting syrup is by running gate system 7 Through cast gate 3 evenly into foundry goods die cavity, so that the temperature of the potting syrup in die cavity keeps all Even, and then steel pipe is merged closely with potting syrup, improve the consistency of castings material.
Embodiment 2
The hydraulic injection molding machine oil internal-circulation type solid plate casting technique of the present embodiment and the casting of embodiment 1 Technique is essentially identical, and its difference is: during moulding by casting, and pouring temperature is 1350 DEG C, cast Time is 33s, and hanging the back pouring time is 60s.The effect that the present embodiment realizes realizes with embodiment 1 Effect is identical.
Embodiment 3
The hydraulic injection molding machine oil internal-circulation type solid plate casting technique of the present embodiment and the casting of embodiment 1 Technique is essentially identical, and its difference is: during moulding by casting, and pouring temperature is 1335 DEG C, cast Time is 36s, and hanging the back pouring time is 55s.The effect that the present embodiment realizes realizes with embodiment 1 Effect is identical.
Above-described is only the preferred embodiment of the present invention, it is noted that general for this area For logical technical staff, without departing from the concept of the premise of the invention, it is also possible to make some changes Shape and improvement, these broadly fall into protection scope of the present invention.

Claims (8)

1. hydraulic injection molding machine oil internal-circulation type solid plate casting technique, wherein, comprises the following steps:
A. make the mould of solid plate (1), use three-cavity moulding, described three-cavity moulding include top box, The die joint of raising middle flask and nowel, described top box and raising middle flask is positioned at the die mounting surface (11) of solid plate;
B. embedded steel tube in above-mentioned raising middle flask, described steel pipe and the hydraulic pressure oil duct (6) in solid plate (1) Corresponding;
C. arranging cast gate (3) position on the nowel described in step b, described cast gate (3) is located at fixed The bottom surface (12) of template (1), offers exhaust rising head (4) and exhaust duct (5), described exhaust rising head (4) offer at top box, described exhaust duct (5) connection top box and raising middle flask;
D. moulding by casting, by the top box described in step c upward, nowel pour into a mould down, described in water Note temperature is 1320 DEG C~1350 DEG C.
Hydraulic injection molding machine oil internal-circulation type solid plate casting technique the most according to claim 1, its In, it is full of chromite sand in described steel pipe.
Hydraulic injection molding machine oil internal-circulation type solid plate casting technique the most according to claim 1, its In, the hydraulic pressure oil duct (6) in described solid plate (1) is interconnected.
Hydraulic injection molding machine oil internal-circulation type solid plate casting technique the most according to claim 1, its In, the material of described moulding by casting is spheroidal graphite cast-iron.
Hydraulic injection molding machine oil internal-circulation type solid plate casting technique the most according to claim 1, its In, the described duration of pouring is 33s~39s, and hanging the back pouring time is 50s~60s.
Hydraulic injection molding machine oil internal-circulation type solid plate casting technique the most according to claim 1, its In, the hydraulic pressure oil duct (6) in described solid plate (1) is positioned at the bottom of solid plate (1).
Hydraulic injection molding machine oil internal-circulation type solid plate casting technique the most according to claim 1, its In, described cast gate (3) is multiple, and be evenly distributed in the bottom surface (12) of solid plate (1) The surrounding at center.
Hydraulic injection molding machine oil internal-circulation type solid plate casting technique the most according to claim 1, its In, described exhaust rising head (4) and extend to the die mounting surface (11) of solid plate (1).
CN201310347232.XA 2013-08-09 2013-08-09 Hydraulic injection molding machine oil internal-circulation type solid plate casting technique Active CN104338898B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108145096A (en) * 2017-11-27 2018-06-12 江苏远方动力科技有限公司 A kind of casting method of turbocharger housing
CN110125331A (en) * 2019-05-17 2019-08-16 合肥江淮铸造有限责任公司 A kind of shape casting technique of casting complicated inner cavity

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101716653A (en) * 2009-12-09 2010-06-02 宁夏共享铸钢有限公司 Anti-deformation method for casting vane of ultra-large mixed flow type water turbine
CN102078917A (en) * 2010-12-21 2011-06-01 四川海科机械制造有限公司 Semi-modular forming manufacturing method and application template thereof
CN201913182U (en) * 2010-12-21 2011-08-03 四川海科机械制造有限公司 Half-mold full-casting vertical casting type cast single-side mold plate
CN102179479A (en) * 2011-04-15 2011-09-14 天津金象动力传输机械有限公司 Groove casting technique for large belt pulley
CN201988686U (en) * 2011-04-15 2011-09-28 成都市西菱汽车配件有限责任公司 Sand type casting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101716653A (en) * 2009-12-09 2010-06-02 宁夏共享铸钢有限公司 Anti-deformation method for casting vane of ultra-large mixed flow type water turbine
CN102078917A (en) * 2010-12-21 2011-06-01 四川海科机械制造有限公司 Semi-modular forming manufacturing method and application template thereof
CN201913182U (en) * 2010-12-21 2011-08-03 四川海科机械制造有限公司 Half-mold full-casting vertical casting type cast single-side mold plate
CN102179479A (en) * 2011-04-15 2011-09-14 天津金象动力传输机械有限公司 Groove casting technique for large belt pulley
CN201988686U (en) * 2011-04-15 2011-09-28 成都市西菱汽车配件有限责任公司 Sand type casting device

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