CN203470827U

CN203470827U - Novel cast steel casting system

Info

Publication number: CN203470827U
Application number: CN201320368309.7U
Authority: CN
Inventors: 赵永让; 岳宗格; 徐恩献; 贾冠飞; 石秀娟; 黄书军; 范可歆; 贾会平
Original assignee: CITIC Heavy Industries Co Ltd
Current assignee: CITIC Heavy Industries Co Ltd
Priority date: 2013-06-26
Filing date: 2013-06-26
Publication date: 2014-03-12
Anticipated expiration: 2023-06-26

Abstract

The utility model discloses a novel cast steel casting system. The novel cast steel casting system comprises a steel ball, a V-shaped channel, a pouring cup, a straight runner, a cross runner and an internal runner, wherein the pouring cup, the straight runner, the cross runner and the internal runner are connected sequentially one another from top to bottom; the V-shaped channel is arranged on the edge of the pouring cup; the V-shaped channel is arranged obliquely; an angle of 10+/-1 degrees is formed between the center line of the V-shaped channel and the horizontal line; the steel ball is arranged on the V-shaped channel; a topper for preventing the steel ball from sliding downwards is also arranged on the V-shaped channel; the straight runner is composed of an upper section, a lower section and a transition section which is connected with the upper and lower sections, wherein the diameter of the upper section is more than that of the lower section, a re-pouring runner is also arranged on the upper section of the straight runner; the re-pouring runner is communicated with the upper section; a pouring port of the re-pouring runner is communicated with a dead head; the diameter of the steel ball is between the diameter of the upper section and the diameter of the lower section of the straight runner. Due to the adoption of the novel cast steel casting system, molten steel can flow into the dead head smoothly and steadily, the temperature of the feeding molten steel of the dead head is higher than that of a cast body, so that the optimal feeding effect of the molten steel can be avoided.

Description

A kind of New-type cast steel running gate system

Technical field

The utility model belongs to casting technology field, specially refers to a kind of New-type cast steel running gate system.

Background technology

At present, the setting of Gating System for Casting Steel, generally adopts the end to return (as shown in Figure 1) or tangent-type, and in casting process, molten steel is from bottom to top full of die cavity by ingate, finally to rising head, completes whole casting process, and tens seconds at least, a few minutes at most.The obvious flaw that this technique reflects is exactly that liquid steel temperature in rising head is lower than the liquid steel temperature in die cavity, be unfavorable for the feeding of rising head to foundry goods, for middle smallclothes, impact is very micro-, but for large-scale or super-huge foundry goods, especially heavy section steel castings, bottom or side are often all provided with chill, molten steel liquid level after iron chill shock chilling rises and progresses into rising head, and the duration of pouring is longer, make the liquid steel temperature in foundry goods bottom steel coolant-temperature gage and rising head have larger difference, form lower high low reversely hung Yong thermograde, affect the feeding effect of rising head, in order to make the better feeding of rising head, traditional technique is separately to establish teeming device (as shown in Figure 2), ingate is directly passed into rising head.On molten steel, be full of die cavity, close the only cast of closure eye pause, then ladle is moved to teeming device, open bag eye, continue to be poured into rising head and be full of molten steel, complete whole casting process.This technique is troublesome poeration not only, and increase a set of running gate system: the one, waste brick pipe, the 2nd, waste molten steel, the 3rd, the impact that running gate system is subject to place sometimes is separately set, also having topmost problem is sometimes because the low bag eye of liquid steel temperature is not opened after bag eye is closed.

Summary of the invention

In order to address the above problem, object of the present utility model is to provide a kind of New-type cast steel running gate system, can make molten steel steadily flow into rising head, reaches riser feeding liquid steel temperature higher than foundry goods body temperature, makes molten steel play best feeding effect.

In order to realize foregoing invention object, the utility model adopts technical scheme as described below:

A kind of New-type cast steel running gate system, comprise steel ball, V-type passage, the cup being connected in turn from top to bottom, sprue, cross gate and ingate, V-type channel setting is in the edge of cup, V-type passage is obliquely installed, between the center line of V row of channels and horizontal line, angulation is 10 ± 1 °, described steel ball is positioned on V-type passage, and on V-type passage, also place the block that a prevention steel ball glides, described sprue is by epimere, hypomere be connected, the changeover portion of hypomere forms, the diameter of epimere is greater than the diameter of hypomere, on the epimere of sprue, be also provided with a teeming road, teeming road is connected with epimere, the sprue gate in teeming road communicates with rising head, the diameter of described steel ball is between the diameter of sprue epimere and the diameter of hypomere.

Owing to adopting technique scheme, the utlity model has following superiority:

Running gate system of the present utility model is when work, first molten steel enters workpiece cavity along sprue, cross gate and ingate, when the page rises to die joint, slow the watering of bag eye flow control, removes the block on V-type passage immediately, steel ball is rolled in cup, straight running channel arrives changeover portion, continues cast, and molten steel steadily flows into rising head along teeming road, reach riser feeding liquid steel temperature higher than foundry goods body temperature, make molten steel play best feeding effect.

Accompanying drawing explanation

Fig. 1 is traditional running gate system schematic diagram;

Fig. 2 structural representation of the present utility model;

In figure: 1-steel ball; 2-block; 3-V type passage; 4-cup; 5-epimere; 6-changeover portion; 7-hypomere; 8-cross gate; 9-ingate; 10-rising head base; 11-rising head; 12-teeming road; 13-teeming device.

The specific embodiment

As shown in Figure 2, a kind of New-type cast steel running gate system, comprise steel ball 1, V-type passage 3, the cup 4 being connected in turn from top to bottom, sprue, cross gate 8 and ingate 9, V-type passage 3 is arranged on the edge of cup 4, V-type passage 3 is obliquely installed, between the center line of V row of channels 3 and horizontal line, angulation is 10 ± 1 °, described steel ball 1 is positioned on V-type passage 3, and on V-type passage 3, also place the block 2 that a prevention steel ball glides, described sprue is by epimere 5, hypomere 7 be connected, the changeover portion 6 of hypomere forms, the diameter of epimere 5 is greater than the diameter of hypomere 7, on the epimere of sprue, be also provided with a teeming road 12, teeming road 12 is connected with epimere 5, the sprue gate in teeming road 12 communicates with rising head 11, the diameter of described steel ball 1 is between the diameter of sprue epimere 5 and the diameter of hypomere 7.

The technological design of grinding roller body foundry goods of take is below that example carrys out further detailed explanation the technical solution of the utility model, as 21.5 tons of foundry goods gross weights, and 29.5 tons of molten steel gross weights, material is ZG18L.

1, rising head arranges 1～φ 1000mm, waters high 1200mm, uses insulating riser sleeve, and the rising head seat of Wooden Pattern Making is used in rising head bottom;

2, the design of the utility model running gate system, cup is selected internal diameter φ 350mm suitable for reading, end opening internal diameter φ 140mm, high 300mm; The epimere diameter of sprue is selected φ 140mm, and hypomere diameter is φ 120mm, and middle changeover portion selects φ 140～φ 120mm transitional brick pipe to connect; Cross gate and ingate are selected the tangent line brick pipe of φ 80mm; Teeming road is stepped, and the bottom cast gate center line in teeming road is 375mm apart from the upper plan range of changeover portion, the top cast gate center line in teeming road apart from die joint apart from 500mm;

3, steel ball type selecting, connects to form with φ 140～φ 120mm transitional brick pipe according to changeover portion, and steel ball size is elected φ 125mm as;

4, the design of V-type passage, puts the V-type passage of 10 ± 1 ° of inclinations, passage length L=750mm with refractory brick at cup place; Before cast, steel ball is positioned over to V-type passage upper end, before steel ball, puts a block, stop tumbling of steel ball, in order to avoid roll into too early cup;

While 5, pouring into a mould, when liquid level rises to die joint, flow control is slow waters, immediately remove the block that stops steel ball, steel ball rolls in cup along V-type passage, shelters from the lower port of changeover portion along the changeover portion of molten steel inflow sprue, continue cast, molten steel steadily flows into rising head along teeming road, reaches riser feeding liquid steel temperature higher than foundry goods body temperature, makes molten steel play best feeding effect.

Claims

1. a New-type cast steel running gate system, it is characterized in that: comprise steel ball (1), V-type passage (3), the cup being connected in turn from top to bottom (4), sprue, cross gate (8) and ingate (9), V-type channel setting is in the edge of cup, V-type passage is obliquely installed, between the center line of V row of channels and horizontal line, angulation is 10 ± 1 °, described steel ball (1) is positioned on V-type passage (3), and on V-type passage, also place the block (2) that a prevention steel ball glides, described sprue is by epimere (5), hypomere (7) be connected, the changeover portion of hypomere (6) forms, the diameter of epimere is greater than the diameter of hypomere, on the epimere of sprue, be also provided with a teeming road (12), teeming road is connected with epimere, the sprue gate in teeming road communicates with rising head (11), the diameter of described steel ball is between the diameter of sprue epimere and the diameter of hypomere.