CN205032643U - As cast pouring device of engine main bearing lid - Google Patents
As cast pouring device of engine main bearing lid Download PDFInfo
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- CN205032643U CN205032643U CN201520431598.XU CN201520431598U CN205032643U CN 205032643 U CN205032643 U CN 205032643U CN 201520431598 U CN201520431598 U CN 201520431598U CN 205032643 U CN205032643 U CN 205032643U
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Abstract
The utility model discloses an as cast pouring device of engine main bearing lid, the pouring device is according to the shape setting of engine main bearing lid foundry goods, the pouring device adopts upper and lower two -part mo(u)lding, the die joint of pouring device is located the middle part cross -section of casting mould, die joint department waters in being provided with at least 1, the interior runner of connecting perpendicular to the ground that waters, the upper portion of pouring device is provided with 1 at least venthole, through the design of this application pouring device, can realize main bearing cap's no rising head casting process, and make full use of cast iron graphitization expanded is from the feeding, solution engine main bearing cap's loose defect problem for the shrinkage porosite of this type of foundry goods improves, and is showing the consumption of reduction metal material and guaranteeing product quality. Compare in present foundry technology up to 15% rejection rate, foundry goods that this application was produced, product quality can effectively be guaranteed up to 97.5% to its qualification rate.
Description
Technical field
The utility model relates to casting technology field, is specifically related to the apparatus for pouring of a kind of engine main bearing cover casting.
Background technology
Main beating cap is that locomotive explosive motor requires higher parts, and for the effect of the load that withstands shocks, its precision and performance directly affect performance and the life-span of main frame, is an important foundry goods.Nodular iron casting is widely used in the casting of the main beating cap of big-block engine due to its high strength, reliability feature that is high, function and service.But due to the complex structure of engine main bearing cover foundry goods, casting section thickness difference is large, free shrink tendency is large, that there is dispersion, that local thermal center is many feature.Nodular iron casting easily produces the casting flaws such as shrinkage cavity and porosity, makes that its casting technique difficulty continues to increase, the sharply increase of manufacturing cost.
In order to prevent the generation of these defects, the rising head of casting weight 30%-50% is usually adopted to carry out feeding, whole casting mold is made to be tending towards consecutive solidification or to solidify simultaneously by regulating temperature field, to reach the object solving nodular iron casting shrinkage defect, but both wasted raw material like this, turn increase the difficulty of cleaning work, affect production efficiency and economic benefit.
Utility model content
In view of this, the apparatus for pouring that the application provides a kind of engine main bearing cover to cast, this apparatus for pouring can realize without rising head from feeding forging type, the shrinkage porosite of such foundry goods is improved, the consumption of remarkable minimizing metal material also ensures product quality, casting qualified rate reaches 97.5%, solves the shrinkage defect problem of big-block engine main beating cap.
For solving above technical problem, the technical scheme that the utility model provides is the apparatus for pouring of a kind of engine main bearing cover casting, described apparatus for pouring is arranged according to the shape of engine main bearing cover foundry goods, described apparatus for pouring adopts upper and lower two-part mo(u)lding, the die joint of described apparatus for pouring is positioned at the cross section, middle part of casting mold, described die joint place is provided with at least 1 ingate, and described ingate connects the cast gate perpendicular to ground, and the top of described apparatus for pouring is provided with at least 1 venthole.
Preferably, the internal diameter of described venthole is 8-12mm, described venthole is also connected with rod of giving vent to anger, guarantees the smooth gas discharge of casting mold.
Preferably, in described apparatus for pouring, the heat energy-saving position of foundry goods being provided with at least 1 chill, the tiling of this external main beating cap is also provided with chill, controlling the cooling procedure of molten iron by arranging chill.
Preferably, described ingate is provided with 4, and ingate is from die joint Decentralized Pull in.
Preferably, the cross section of described ingate is trapezoidal, to be describedly trapezoidally of a size of: upper base × go to the bottom × height=10mm × 12mm × 50mm.
Preferably, the length of described ingate is not less than: ingate length suitably increases, and after casting mold is full of, ingate is solidified very soon, prevents the molten iron loopback because graphitization expansion causes.
Preferably, described apparatus for pouring adopts furane resins sand molding, and the 24h tensile strength of described furan resin-sand is not less than 1.4MPa, and mold wall moving can be avoided to produce shrinkage cavity.
Preferably, the upper and lower case of described apparatus for pouring is ferrosteel sandbox, and described upper and lower case adopts Mechanical Method fastening, and when preventing casting solidification, sandbox loosens.
Preferably, be also provided with sprue, cross gate in described apparatus for pouring, the section area ratio of described sprue, cross gate and described ingate is that ∑ F is straight: ∑ F is horizontal: in ∑ F=and 1:4:1.1.
Wherein, sprue, cross gate, when ingate section area ratio is in ∑ F straight < ∑ F horizontal < ∑ F, for unchoked running system, it is common way in prior art, and in technical scheme in ∑ F straight < ∑ F < ∑ F horizontal, for semi open model running gate system, it is steady that molten iron fills type, the maximum i.e. semi open model of cross gate sectional area, strengthen cross gate sectional area, ingate length, in casting process, cross gate can play good feeding effect, after well preventing molten iron to be full of, reflux when starting to solidify, effectively prevent shrinkage porosite, the defects such as shrinkage cavity occur.
The application compared with prior art, it is described in detail as follows: the apparatus for pouring that this application provides the casting of a kind of engine main bearing cover, described apparatus for pouring is arranged according to the shape of engine main bearing cover foundry goods, described apparatus for pouring adopts upper and lower two-part mo(u)lding, the die joint of described apparatus for pouring is positioned at the cross section, middle part of described casting mold, described die joint place is provided with at least 1 ingate, described ingate connects the cast gate perpendicular to ground, and the top of described apparatus for pouring is provided with at least 1 venthole.
The application's apparatus for pouring does not arrange rising head, by itself improving apparatus for pouring structure, apparatus for pouring is upper and lower somatotype, die joint is in the middle part of apparatus for pouring, ingate is from die joint Decentralized Pull in, and ingate has a uniform section, its length, in a suitable scope, promotes casting mold smooth gas discharge by rod of giving vent to anger in addition.By the design of the application's apparatus for pouring, the non-feedhead casting process of main beating cap can be realized, make full use of cast iron graphitization expansion from feeding, solve the rarefaction defect problem of engine main bearing cover, the shrinkage porosite of such foundry goods is improved, and significantly reduces metal material consumption and ensure product quality.Compared to the percent defective up to 15% in existing foundry engieering, the foundry goods that the application produces, its qualification rate, up to 97.5%, effectively can ensure product quality.
Accompanying drawing explanation
Fig. 1 is the top view of apparatus for pouring described in the application;
Fig. 2 is the side view of apparatus for pouring shown in Fig. 1.
Detailed description of the invention
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As Fig. 1, shown in Fig. 2, a kind of apparatus for pouring of engine main bearing cover casting, described apparatus for pouring is arranged according to the shape of engine main bearing cover foundry goods, the ∑ F of described apparatus for pouring is straight: ∑ F is horizontal: in ∑ F=and 1:4:1.1, on described apparatus for pouring adopts, lower two-part mo(u)lding, on, nowel is ferrosteel sandbox, on described, nowel adopts Mechanical Method fastening, when preventing casting solidification, sandbox loosens, the die joint of described apparatus for pouring is positioned at the cross section, middle part of described casting mold, described die joint place is provided with 4 ingates 1, ingate 1 is from die joint Decentralized Pull in, the cross section of described ingate 1 is trapezoidal, describedly trapezoidally to be of a size of: upper base × go to the bottom × height=10mm × 12mm × 50mm, the length of ingate 1 is not less than 50mm, the length of ingate 1 suitably increases, after casting mold is full of, ingate is solidified very soon, prevent the molten iron loopback because graphitization expansion causes, described ingate 1 connects the cast gate 2 perpendicular to ground, the top of described apparatus for pouring is provided with 11 venthole (not shown)s, its internal diameter is 8-12mm, described venthole (not shown) is also connected with rod 3 of giving vent to anger, guarantee the smooth gas discharge of casting mold.
For controlling the cooling procedure of molten iron, as preferably, in apparatus for pouring, the heat energy-saving position of foundry goods being provided with at least 1 chill (not shown), the tiling of this external main beating cap is also provided with chill.
As preferably, described apparatus for pouring adopts furane resins sand molding, and the 24h tensile strength of described sand mold is not less than 1.4MPa, and mold wall moving can be avoided to produce shrinkage cavity.
Described in the present embodiment, apparatus for pouring does not arrange rising head, but make full use of cast iron graphitization expansion from feeding, realize the non-feedhead casting process of main beating cap, solve the rarefaction defect problem of engine main bearing cover, the shrinkage porosite of such foundry goods is improved, and significantly reduces metal material consumption and ensure product quality.Prove through test, compared to the percent defective up to 15% in existing foundry engieering, the foundry goods that the present embodiment is produced, its qualification rate, up to 97.5%, effectively can ensure product quality.
Below be only preferred embodiment of the present utility model, it should be pointed out that above-mentioned preferred embodiment should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. the apparatus for pouring of an engine main bearing cover casting, described apparatus for pouring is arranged according to the shape of engine main bearing cover foundry goods, described apparatus for pouring adopts upper and lower two-part mo(u)lding, it is characterized in that: the die joint of described apparatus for pouring is positioned at the cross section, middle part of casting mold, described die joint place is provided with at least 1 ingate, described ingate connects the cast gate perpendicular to ground, and the top of described apparatus for pouring is provided with at least 1 venthole.
2. a kind of apparatus for pouring according to claim 1, is characterized in that: the internal diameter of described venthole is 8-12mm, and described venthole is connected with rod of giving vent to anger.
3. a kind of apparatus for pouring according to claim 1, is characterized in that: in described apparatus for pouring, the heat energy-saving position of foundry goods is provided with at least 1 chill.
4. a kind of apparatus for pouring according to claim 1, is characterized in that: described ingate is provided with 4.
5. a kind of apparatus for pouring according to claim 1, is characterized in that: the cross section of described ingate is trapezoidal, to be describedly trapezoidally of a size of: upper base × go to the bottom × height=10mm × 12mm × 50mm.
6. a kind of apparatus for pouring according to claim 1, is characterized in that: the length of described ingate is not less than 50mm.
7. a kind of apparatus for pouring according to claim 1, is characterized in that: described apparatus for pouring adopts furane resins sand molding, and the 24h tensile strength of described furan resin-sand is not less than 1.4MPa.
8. a kind of apparatus for pouring according to claim 1, is characterized in that: the upper and lower case of described apparatus for pouring is ferrosteel sandbox, and described upper and lower case adopts Mechanical Method fastening.
9. a kind of apparatus for pouring according to claim 1, is characterized in that: be also provided with sprue, cross gate in described apparatus for pouring, and the section area ratio of described sprue, cross gate and described ingate is that ∑ F is straight: ∑ F is horizontal: in ∑ F=and 1:4:1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431598.XU CN205032643U (en) | 2015-06-19 | 2015-06-19 | As cast pouring device of engine main bearing lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520431598.XU CN205032643U (en) | 2015-06-19 | 2015-06-19 | As cast pouring device of engine main bearing lid |
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| Publication Number | Publication Date |
|---|---|
| CN205032643U true CN205032643U (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520431598.XU Active CN205032643U (en) | 2015-06-19 | 2015-06-19 | As cast pouring device of engine main bearing lid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077494A (en) * | 2016-08-25 | 2016-11-09 | 四川南车共享铸造有限公司 | A kind of pouring procedure casting VHP main beating cap |
-
2015
- 2015-06-19 CN CN201520431598.XU patent/CN205032643U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077494A (en) * | 2016-08-25 | 2016-11-09 | 四川南车共享铸造有限公司 | A kind of pouring procedure casting VHP main beating cap |
| CN106077494B (en) * | 2016-08-25 | 2018-11-16 | 四川南车共享铸造有限公司 | A kind of pouring procedure casting VHP main beating cap |
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Address after: 641301 Ziyang City, Sichuan province Yanjiang District morning China World Trade Center Road No. 6 Building 2 floor Patentee after: Sichuan sharing Casting Co., Ltd. Address before: 641300 Ziyang City, Sichuan province Yanjiang District morning China World Trade Center Road No. 6 Building 2 floor Patentee before: SICHUAN NANCHE GONGXIANG CASTING CO., LTD. |