CN201482922U

CN201482922U - Structure for casting large-sized front end box of ship engine

Info

Publication number: CN201482922U
Application number: CN2009201411871U
Authority: CN
Inventors: 廖文东; 陈祖礼; 邓宗钰; 黎武新; 黄耀光; 陈财坤; 刘毅; 杨双华; 张�浩
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2009-08-05
Filing date: 2009-08-05
Publication date: 2010-05-26
Anticipated expiration: 2019-08-05

Abstract

The utility model relates to a structure for casting a large-sized front end box of a ship engine, which comprises a sprue cup and a vertically arranged down sprue. A transverse single-row U-shaped runner is arranged on the down sprue, a plurality of downward sub-down sprues are vertically distributed on the runner, a plurality of internal sprues with single sides extending toward the a cast of the large-sized front end box of the ship engine are transversely distributed on each sub-down sprue, and the outlets of the internal sprues are communicated with the sprue gate of the cast of the large-sized front end box of the ship engine. The structure can improve the stability of molten iron die cavity filling, reduce the time difference of the molten iron at different parts during die cavity filling process of the cast product, accelerate the die cavity filling, and increase casting yield. The casting device provided by the utility model is suitable for casting various large-sized front end boxes of ship engines, especially middle-sized and large-sized front end boxes of ship engines.

Description

Argosy machine head end box cast structure

Technical field

The utility model relates to a kind of casting with pouring into a mould structure, relates in particular to a kind of cast structure of casting large-scale ship machine head end box.

Background technology

The pouring procedure of traditional casting large-scale ship machine head end box is to adopt straight type cross gate casting system and H type cross gate casting system, molten iron forms cast product at last by the mode moulding that cup, sprue, straight type/H type cross gate, ingate enter die cavity.The shortcoming and defect of straight type/H type cross gate casting system is: in, big molded dimension (more than 800 * 800mm) (down with), complicated ironcasting product, it is long that directly type/H type cross gate casting system molten iron is gone into the type time, it is poor that cast molding process molten iron charges into stationarity, the molten iron temperature gradient is big in the die cavity, cast product casting labour intensity is big, and product yield is low.

CN200820166302.6 has introduced a kind of heavy castings running gate system with filter, its cast structure comprises total sprue, cross gate and branch sprue, cross gate is communicated with the branch sprue of correspondence with total sprue, lay in the cross gate it is isolated into the filter course of the upper and lower.Molten metal flows into cross gate by total sprue during cast, contains the molten metal that melts slag and flows on the upper strata and be filtered device and filter the back and flow into lower floor, melts slag therebetween and is attracted on the filter, thereby guarantee casting quality.What this technology mainly solved is the filtration problem that melts slag, and molten iron is gone into type time length when centering, big molded dimension complexity ironcasting cast, molten iron charges into problems such as stationarity is poor, the interior molten iron temperature gradient of die cavity is big and solves well.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model provides in a kind of can effectively the shortening, big molded dimension, complex large-sized ship machine head end box foundry goods casting time, improve the stationarity that cast molding process molten iron charges into, reduce molten iron temperature gradient in the die cavity, reach the cast structure that improves the product product yield.

The utility model argosy machine head end box cast structure comprises cup and the sprue that vertically is provided with, horizontal cross gate is set on described sprue, on described horizontal cross gate, distribute straight down a plurality of minutes sprues are set, cross direction profiles has a plurality of one-sided ingates that extend to argosy machine head end box foundry goods on described minute sprue, and the outlet of described ingate is connected with the sprue gate of argosy machine head end box foundry goods.

Wherein, the horizontal cross gate preferred structure of setting is single U type cross gate; The described branch sprue that distributes straight down is 3～15; Described ingate is provided with unidirectional three rows perpendicular to the axis of minute sprue, and is communicated with the sprue gate of corresponding argosy machine head end box foundry goods respectively.

The beneficial effects of the utility model are:

1, effectively shorten in, big molded dimension, complicated ironcasting product casting time;

2, reduce the interior molten iron temperature gradient of die cavity in the cavity filling process, improve the cast product ratio of briquetting;

3, reduce the labour intensity of casting cycle, improved production efficiency.

4, can be applied to various argosy machine head end box castings.

Description of drawings

Fig. 1 is that schematic diagram is looked on the right side of the present utility model.

Fig. 2 is that schematic diagram is looked on a left side of the present utility model.

Mark the following drawings mark thereon in conjunction with the accompanying drawings:

The 1-cup; The 2-sprue; 3-U type cross gate; 4-divides sprue; The 5-ingate; Arrange ingate among the 51-; 52-is row's ingate down; The 6-foundry goods.

The specific embodiment

Further specify the utility model structure and using method below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model argosy machine head end box pouring device, comprise cup 1 and the sprue 2 that vertically is provided with, the utility model adopts the process structure of U type cross gate, U type cross gate 3 links to each other with sprue 2, vertically be distributed with a plurality of downward branch sprues 4 on U type cross gate 3, cross direction profiles has the one-sided ingate that extends to argosy machine head end box foundry goods on minute sprue 4, and ingate is provided with row's ingate, middle row's ingate 51 and arranges ingate 52 down.Last row's ingate, middle row's ingate 51 and following row's ingate 52 outlets are connected with the sprue gate of argosy machine head end box foundry goods 6.Wherein, arrange ingate, middle row's ingate 51 on, arrange ingate 52 perpendicular to the unidirectional setting of the axis of minute sprue 4 down.

During use, the casting system that at first will be distributed on outer mould and the core box mould is made the core mode by making outer die cavity with penetrating, and before casting casting system is finished moulding.Utilize casting cycle that cup is full of then, guarantee that each position molten iron of casting system is full of molten iron to greatest extent, to die cavity is sent molten iron in each position of casting system, casts out cast product.

When cast, in the casting case, arrange the single-piece foundry goods, foundry goods profile and inner-cavity structure form by the cold box resin sand system of penetrating, and before the cast core are placed on the outer die cavity of being made by self-hardening sand.As shown in Figure 1, molten iron is introduced into cross gate and divides sprue by sprue during cast, again by under arrange ingate and introduce die cavity, when treating die cavity inner metal liquid face near middle row's ingate, just drawing molten metal by middle row's ingate enters die cavity.When treating die cavity inner metal liquid face near last row's ingate, just drawing molten metal by last row's ingate enters die cavity, and molten iron is filling die cavity in order successively from bottom to top, and the hottest molten metal enters into the die cavity top through the upper strata ingate.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.

Claims

1. argosy machine head end box cast structure, comprise cup and the sprue that vertically is provided with, it is characterized in that: horizontal cross gate is set on described sprue, on described horizontal cross gate, distribute straight down a plurality of minutes sprues are set, cross direction profiles has a plurality of one-sided ingates that extend to argosy machine head end box foundry goods on described minute sprue, and the outlet of described ingate is connected with the sprue gate of argosy machine head end box foundry goods.

2. according to the described argosy machine of claim 1 head end box cast structure, it is characterized in that: the horizontal cross gate structure of setting is single U type cross gate.

3. according to claim 1 or 2 described argosy machine head end box cast structure, it is characterized in that: the described branch sprue that distributes straight down is 3～15.

4. according to claim 1 or 2 described argosy machine head end box cast structure, it is characterized in that: described ingate is provided with unidirectional three rows perpendicular to the axis of minute sprue.

5. according to the described argosy machine of claim 4 head end box cast structure, it is characterized in that: ingate comprises row's ingate, middle row's ingate and arranges ingate down.