CN109128114A

CN109128114A - A kind of foundry processing

Info

Publication number: CN109128114A
Application number: CN201810715802.9A
Authority: CN
Inventors: 孙洪宾; 魏凯; 朱海林; 杨万里
Original assignee: Henan Senyuan Electric Co Ltd
Current assignee: Henan Senyuan Electric Co Ltd
Priority date: 2018-07-03
Filing date: 2018-07-03
Publication date: 2019-01-04

Abstract

The present invention relates to a kind of foundry processings, to solve the problems, such as that the casting that liquid stream turbulent condition existing for prior art medium casting forming manufacture technique effectively causes is easier to the casting flaws such as generate stomata, slag inclusion, cod.The foundry processing includes the following steps: the casting ladle that verts, and by casting ladle inner metal liquid injection type chamber, starts pouring position a little higher than type chamber lowest point, and casting ladle tilt pouring during rising while until molten metal is full of type chamber completes casting.The foundry processing completes casting ladle overturning, casting using a little higher than type chamber lowest point as initial position casting of molten metal in continuous uphill process, reduces formation and generation turbulent in casting process to the full extent, reduces the probability of casting flaw.

Description

A kind of foundry processing

Technical field

The present invention relates to a kind of foundry processings.

Background technique

Molten metal is in filling type flow process, and there are laminar flows and turbulent two states for liquid stream；In order to guarantee the quality of casting, Usually liquid stream is controlled in laminar condition as far as possible.In the prior art molten metal from start casting height of the position away from cavity bottom Difference is inevitable；Under the force of gravity, difference in height is bigger, and turbulent flow is more serious, the easier generation such as stomata of casting, folder Slag, the casting flaws such as cod.

Summary of the invention

The purpose of the present invention is to provide a kind of foundry processings, to solve the presence of prior art medium casting forming manufacture technique The casting that effectively causes of liquid stream turbulent condition be easier to the problem of casting flaws such as generating stomata, slag inclusion, cod.

In order to achieve the goal above, the technical solution that foundry processing of the present invention provides is:

The scheme one of foundry processing: a kind of foundry processing includes the following steps: the casting ladle that verts, by casting ladle inner metal liquid injection type Chamber, starts pouring position a little higher than type chamber lowest point, casting ladle tilt pouring during rising while, until molten metal is full of Type chamber completes casting.The foundry processing is using a little higher than type chamber lowest point as initial position casting of molten metal, and on continuous Casting ladle overturning, casting are completed during rising, and are reduced formation and generation turbulent in casting process to the full extent, are reduced casting Make the probability of defect.

The scheme two of foundry processing: on the basis of scheme one, the type chamber has at least two type chambers, and each type chamber is logical Cross running channel connection.A set of product often uses a variety of casting, which uses a variety of type chambers, and various chamber is passed through running channel Connection, it can be achieved that once-cast produce cover casting, improve efficiency, reduce process process, reduce production cost.

The scheme three of foundry processing: on the basis of scheme two, the running channel includes sprue, ingate and is connected to the two Cross gate, the sprue pass through cross gate center, the cross gate pass through ingate center.The running channel mode of communicating The flow distance for shortening molten metal in casting process is conducive to molten metal and fills type to casting type chamber, reduces due to pouring not It rises, casting caused by the casting flaws such as cold shut is scrapped.

Detailed description of the invention

Fig. 1 is the mold structure diagram of sand mold on casting that foundry processing of the present invention uses, lower sand mold and sand core.

Fig. 2 is the floor plan of three kinds of casting of foundry processing once-cast of the present invention.

Fig. 3 is foundry processing running gate system figure of the present invention.

Description of symbols: 1, upper sand mold；2, sand core；3, lower sand mold；4, most at high type chamber；5, most at low profile chamber；6, One casting；7, the second casting；8, third casting；9, casting ladle；10, ingate；11, sprue；12, sprue cup；13, cross gate.

Specific embodiment

Embodiments of the present invention are described further with reference to the accompanying drawing.

The specific embodiment one of foundry processing of the present invention: the foundry processing includes the following steps: the casting ladle 9 that verts, by casting ladle 9 Interior molten metal injection type chamber, starts pouring position a little higher than type chamber lowest point, and casting ladle 9 is verted and poured during rising while Note completes casting until molten metal is full of type chamber.The foundry processing is using at a little higher than most low profile chamber 5 position as start bit Casting of molten metal is set, and synchronously completes overturning, the casting of casting ladle 9 in the continuous uphill process of casting ladle 9, is reduced to the full extent Turbulent formation and generation, reduce the probability of casting flaw in casting process.

As shown in Figure 1, at least two type chambers of the casting, that is, once-cast complete the first casting 6, the in the present embodiment The production of two casting 7 and third casting 8, the first casting 6 that mulling moulding is completed, the second casting 7 and third casting 8 are by such as figure Moulding layout is carried out shown in 2, completes running gate system as shown in Figure 3, and casting ladle 9 is carried out at the sprue cup 12 in Fig. 3 and is poured, gold Belong to the casting moulding that liquid completes three kinds of casting by the circulation in running gate system in sprue 11 and ingate 10.It is actually each The product of engineer application may have the case where one or more casting, and once-cast produces three sets of casting in the present embodiment, mention The high efficiency of castings production reduces process process, reduces production cost；It can also be completed herein according to same process flow The castings production of two kinds or other a variety of quantity, regardless of casting size is varied, regardless of complexity is varied, regardless of matter It is low that amount has height to have, and can be achieved by Fig. 2 technique.

As shown in figure 3, the running channel includes sprue 11, ingate 10 and the cross gate for being connected to the two in the present embodiment 13, the sprue 11 passes through the center of cross gate 13, and the cross gate 13 passes through the center of sprue 11, the ingate 10 It is evenly arranged on the two sides of sprue 11；The running channel mode of communicating shortens the flow distance of molten metal in casting process, is conducive to gold Belong to liquid and type is filled to casting type chamber, reduces as can not pour, casting caused by the casting flaws such as cold shut is scrapped.

Detailed process is as follows for foundry processing of the present invention: mulling and moulding: by one set of die on core shooter, heated mould Tool, toward mold cavity in inject precoated sand, precoated sand is in the intracavitary curing molding of type, opening mold, sand mold 1, lower sand mold 3 in taking-up And whole sand cores 2；Moulding layout: carrying out arrangement mounting arrangement according to running gate system as shown in Figure 2 for three kinds of sand molds, is poured altogether Three kinds of sand molds, total 60 casting, constitute ingate 10 and sprue 11 as shown in Figure 3；Be poured and solidify: casting ladle 9 inclines Turn, the molten metal in casting ladle 9 starts injection type chamber, and molten metal starts the lowest point of a little higher than all models chamber in the position at casting； The rotation of 9 side rising edge of casting ladle is poured, until molten metal is full of whole type chambers, completes casting.

Claims

1. a kind of foundry processing, characterized by the following steps: vert casting ladle, and casting ladle inner metal liquid injection type chamber is opened Beginning pouring position a little higher than type chamber lowest point, casting ladle while rise during while tilt pouring, until molten metal be full of type chamber, Complete casting.

2. foundry processing according to claim 1, it is characterised in that: the type chamber has at least two type chambers, each type Chamber is connected to by running channel.

3. foundry processing according to claim 2, it is characterised in that: the running channel includes sprue, ingate and is connected to The cross gate of the two, the sprue pass through the center of cross gate, and the cross gate passes through the center of ingate.