CN201217069Y

CN201217069Y - Gating system of clintheriform spheroidal iron member

Info

Publication number: CN201217069Y
Application number: CNU2008200600034U
Authority: CN
Inventors: 朱筠; 於有根; 周联山
Original assignee: Shanghai Institute Of Machine Building Technology Co Ltd
Current assignee: Shanghai Institute Of Machine Building Technology Co Ltd
Priority date: 2008-06-20
Filing date: 2008-06-20
Publication date: 2009-04-08
Anticipated expiration: 2018-06-20

Abstract

The utility model discloses a plate nodular iron piece pouring system, comprising a pouring cup, a sprue, a cross runner and a plurality of plate castings. The large planes of the plate castings are vertically arranged in parallel and effective intervals are arranged between the plate castings. The cross runner is arranged at one side of the top of a plate casting group, forming a narrow kissing gate. The pouring system adopts the techniques of arranging the kissing gate at the top and vertically arranging the plate castings, so when pouring, liquid iron is filled to a mold along the wall of the mold and solidifies gradually from bottom to top, thus ensuring uniform and consistent metallographic structure of the plate nodular iron piece. The pouring system pours through the narrow kissing gate, thus prolonging pouring time, which has feeding function during the pouring process. The pouring system has good slag retaining function and avoids the defects of slag inclusion and sand inclusion. The plate nodular iron piece pouring system is reasonable and simple in structure, high in yield, small in occupying area and high in production efficiency and saves metal. The pouring system is convenient to remove, and the castings are cast through series casting method.

Description

The running gate system of tabular magnesium iron spare

Technical field

The utility model relates to a kind of running gate system, relates in particular to a kind of running gate system of tabular magnesium iron spare.

Background technology

Running gate system is the passage that liquid metal flows into die cavity in the casting mold.The running gate system of general ironcasting mainly is made up of cup, sprue, cross gate and ingate four parts.Reasonably running gate system is to guaranteeing that casting quality is very important.

Tabular magnesium iron spare for long 100～300mm, wide 50～100mm, thick 5～15mm, though its simple shape, but because foundry goods directly uses with as cast condition without heat treatment, require its metallographic structure uniformity, field trashes such as no carburizing, with the mechanical property that guarantees green casting within the specific limits, and foundry goods does not allow defectives such as sand holes, pore, slag inclusion.

The running gate system of existing tabular magnesium iron spare mainly contains two kinds:

First kind is horizontal side notes method, and running gate system as shown in Figure 1.Tabular foundry goods 1 big planar horizontal is placed, and molten iron enters die cavity through cup 2, sprue 3, cross gate 4, ingate 5 from foundry goods one side.When filling type, molten iron rises to plane 7 gradually by foundry goods bottom surface 6, because foundry goods is thinner, the sand mold die cavity on plane 7 is in heating status always in the whole formation, and magnesium iron liquid is mobile relatively poor, the rate of climb of molten metal is slower, easily makes the last plane of foundry goods form burning into sand, the class that scabs defective; Exhaust is not smooth in the die cavity in addition, and place, plane on foundry goods, cast back is prone to contracts flatly, and it is recessed to form the plane, can not guarantee the dimensional accuracy of foundry goods well.

Second kind is vertical bottom running, and running gate system as shown in Figure 2.Vertically place on tabular foundry goods 1 big plane, and molten iron enters die cavity through cup 2, sprue 3, cross gate 4, ingate 5 from foundry goods bottom 9.It is steady that molten metal fills type from bottom to top, help gas discharge in the die cavity, but tabular magnesium iron spare is a thin-section casting, ingate 8 sectional areas are less, especially cavity filling process medium casting bottom is in the high-temperature liquid metal encirclement that constantly enters always, and it is on the low side to the molten metal relative temperature on foundry goods top 10 to fill type, makes 10 places, foundry goods top be prone to the cold shut defective, and the temperature difference up and down also easily makes the metallographic structure of foundry goods produce difference, thereby causes the mechanical property of monoblock foundry goods unbalanced.

The utility model content

Technical problem to be solved in the utility model is the running gate system that a kind of tabular magnesium iron spare simple in structure will be provided, make the foundry goods inside metallographic of casting by this running gate system more even, material capability is more stable, improves the casting flaw such as cold shut, misrun, slag inclusion, burning into sand of cast(ing) surface.

The utility model is that to solve the problems of the technologies described above the technical scheme that is adopted as follows:

A kind of running gate system of tabular magnesium iron spare, include cup, sprue, cross gate and some tabular foundry goods, the vertical parallel placement in the big plane of described tabular foundry goods, at interval effective distance between the tabular foundry goods, cross gate is arranged at a side at tabular foundry goods group top, and forms narrow slit shape kiss gate.

The flanging width of described kiss gate is preferably 2～3mm.

Further, the both sides of described cross gate bottom can be symmetrically arranged with two groups of tabular foundry goods, the both sides of cross gate bottom form narrow slit shape kiss gate with the top of these two groups of tabular foundry goods respectively, and the foundry goods quantity of one-sided tabular foundry goods group is no more than 10 (quantity also can cause defectives such as misrun too much).

Opposite side in tabular cast top preferably is provided with venthole.

The utility model adopts top kiss gate technology, tabular foundry goods is vertically arranged, molten iron flows into along wall by the flanging slit when pouring into a mould like this, molten metal steadily fills type from bottom to top, metal is consecutive solidification from bottom to up, strengthened the succession of solidifying, helped preventing misrun and cold shut defective, thereby guarantee the uniformity of tabular magnesium iron spare metallographic structure; And, prolonged the duration of pouring by the cast of narrow slit cast gate, the feeding effect is just arranged in casting process, and the pushing off the slag function well, avoided defectives such as slag inclusion, burning into sand; Tabular magnesium iron spare running gate system of the present utility model is rational in infrastructure, simple, saves metal, the product yield height; And running gate system is convenient to remove, and foundry goods adopts series pouring, and floor space is little, the production efficiency height.

The setting of venthole then helps the exhaust of the type mode of filling in casting process of the utility model running gate system, eliminates defectives such as pore.

Description of drawings

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated, wherein:

Fig. 1 is the running gate system schematic diagram that the tabular foundry goods horizontal side of prior art is annotated method;

Fig. 2 is the running gate system schematic diagram of the vertical bottom running of tabular foundry goods of prior art;

Fig. 3 is the structural representation of one of tabular casting moulding system embodiment of the utility model;

Fig. 4 is two the structural representation of the tabular casting moulding system embodiment of the utility model.

Among the figure:

1. tabular foundry goods 2. cups 3. sprues 4. cross gates

5. ingate 6. adopts horizontal side to annotate foundry goods bottom surface in the running gate system of methods

7. adopt horizontal side to annotate plane on the foundry goods in the running gate system of method

8. adopt the ingate in the running gate system of vertical bottom running

9. adopt the foundry goods bottom in the running gate system of vertical bottom running

10. adopt foundry goods top 11. kiss gates in the running gate system of vertical bottom running

12. venthole 13. foundry goods spacings

14. the top of the utility model running gate system medium casting

The specific embodiment

Embodiment 1

As shown in Figure 3, with the vertical parallel placement in the big plane of one group of 6 tabular magnesium iron spare 1, the distance 13 that every block casting part is certain at interval is to guarantee enough mold thicknesses.Cross gate 4 is positioned over top 14 1 sides of foundry goods group, the flanging width of formed kiss gate 11 is 2～3mm, sprue 3 and cup 2 are set on the cross gate 4, molten metal enters die cavity through cup 2, sprue 3, cross gate 4 and kiss gate 11 during cast, descend along wall, finish from bottom to top then and steadily fill type, form monolateral series connection foundry goods in groups.Opposite side at every block casting part top sets out pore 12 respectively, and it is smooth and easy to be beneficial in the casting process exhaust.

Embodiment 2

As shown in Figure 4, with the vertical parallel placement in the big plane of one group of 5 tabular magnesium iron spare 1, on the basis of first kind of embodiment, place 5 tabular magnesium iron spares of another group in cross gate 4 bottoms symmetry, and form the kiss gate 11 of opposite side, molten metal enters die cavity through cup 2, sprue 3, cross gate 4 and both sides kiss gate 11 during cast, descend along wall, finish from bottom to top then and steadily fill type,, finally form the bilateral foundry goods in groups of connecting by venthole 12 exhausts.

The tabular magnesium iron spare group of every group of parallel placement also can be the tabular magnesium iron spare that comprises other numbers of packages in the foregoing description, but general every group be no more than 10, because quantity also can cause defectives such as misrun too much.

Claims

1. the running gate system of a tabular magnesium iron spare, include cup, sprue, cross gate and some tabular foundry goods, it is characterized in that: the vertical parallel placement in the big plane of described tabular foundry goods, at interval effective distance between the tabular foundry goods, cross gate is arranged at a side at tabular foundry goods group top, and forms narrow slit shape kiss gate.

2. the running gate system of a kind of tabular magnesium iron spare according to claim 1, it is characterized in that: the flanging width of described kiss gate is 2～3mm.

3. the running gate system of a kind of tabular magnesium iron spare according to claim 1 and 2, it is characterized in that: the bilateral symmetry of described cross gate bottom is provided with two groups of tabular foundry goods, the both sides of cross gate bottom form narrow slit shape kiss gate with the top of these two groups of tabular foundry goods respectively, and the foundry goods quantity of one-sided tabular foundry goods group is no more than 10.

4. the running gate system of a kind of tabular magnesium iron spare according to claim 1 and 2, it is characterized in that: the opposite side in tabular cast top is provided with venthole.

5. the running gate system of a kind of tabular magnesium iron spare according to claim 3, it is characterized in that: the opposite side in tabular cast top is provided with venthole.