CN217121706U - Low-differential-pressure casting bottom box with melt purification function - Google Patents

Abstract

The utility model discloses a low differential pressure casting bottom case with pure purification performance of fuse-element, including sand box gating system, collection sediment and current stabilizer comprise foamed ceramic filter screen, iron sheet filter screen and steel wire ball. The utility model discloses utilize its cellular structure effectively to slow down the flow of alloy liquid, effectual will remain the superficial sand in the gating system, the oxidation that produces among the pouring process presss from both sides the sediment and completely cuts off outside pouring the water in, subsides the great oxidation of density in the alloy liquid once more through the scouring away of alloy liquid to the steel wire ball and presss from both sides the sediment, along with the alloy liquid fills the type and rises to the upper plane department of under casing, and latticed structure's iron sheet filter screen purifies alloy liquid once more, utilizes the utility model discloses a collection sediment and current stabilizer can effectively block the oxidation and press from both sides the sediment and further fill the type in advancing, have promoted the melt mass, have gained beneficial effect such as reduce cost, improvement quality.

Description

Low-differential-pressure casting bottom box with melt purification function

Technical Field

The utility model belongs to the technical field of the sand box technique and specifically relates to a low counter-pressure casting bottom case with pure purification performance of fuse-element.

Background

At present, the low differential pressure pouring technology is widely applied to a magnesium alloy precision casting forming process, but because the magnesium alloy is active and easy to oxidize, an alloy liquid is contacted with air in a low differential pressure filling process to generate oxidized slag inclusion, the alloy liquid flows along with the filling process and is carried to each part of a casting, the cast casting has the defects of oxidized slag inclusion and the like, cracks are generated due to the concentrated internal stress at the oxidized slag inclusion in a solidification process, the quality of the casting is seriously influenced, the casting is scrapped, and the cost is increased.

The solution of the purity of the melt is the fundamental solution to the casting defects, but the introduction of inert protective atmosphere gas for pouring has high requirements on equipment and high cost, so that the technical problem of how to filter oxidation slag inclusion effectively at low cost and promote stable filling of the alloy liquid is the solution to the casting defects.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the background technology, an improved low-differential-pressure casting bottom box with a melt purification function is provided, and the problems of low cost, effective filtration of oxidation slag inclusion and promotion of stable alloy liquid filling are solved.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a low differential pressure casting under casing with pure purification performance of fuse-element, includes the gating system, collection sediment and current stabilizer constitute by ceramic foam filter screen, steel wire ball and iron sheet filter screen, the gating system constitute by the cross gate and the ingate that are linked together, ceramic foam filter screen places in gating system's cross gate department, the steel wire ball is placed in cross gate and the interchannel juncture position that links to each other of ingate, ceramic foam filter screen places on the under casing plane and is located the ingate position.

The size of the iron sheet filter screen is larger than the size of the opening outside the ingate.

The distance between the ceramic foam filter screen and the opening outside the ingate is not more than 1/4 inner length of the cross gate and is not less than 40mm, and the ceramic foam filter screen is fixed inside the cross gate.

The utility model has the advantages that:

the utility model discloses a foamed ceramic filter screen utilizes its cellular structure effectively to slow down the flow of alloy liquid, and effectual superficial sand that will remain in the gating system, the oxidation clamp sediment that produces among the pouring process is isolated outside pouring in, subsides the great oxidation clamp sediment of density in the alloy liquid once more to the washing away of steel wire ball through the alloy liquid, and along with the alloy liquid fills the type and rises to plane department on the under casing, the iron sheet filter screen of latticed structure purifies once more the alloy liquid, utilizes the utility model discloses a collection sediment and current stabilizer can effectively block the oxidation and press from both sides the sediment and advance to go into in and further fill the type, have consequently effectively promoted fuse-element purity, have improved the foundry goods quality.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 and fig. 2 show a low differential pressure casting under casing with pure purification performance of fuse-element, including the gating system 1, collection sediment and current stabilizer comprise ceramic foam filter screen 4, steel wire ball 3 and iron sheet filter screen 2, and the gating system 1 comprises cross gate and the ingate that is linked together, and ceramic foam filter screen 4 places in gating system's cross gate department, and steel wire ball 3 places in cross gate and the continuous boundary position of ingate, and ceramic foam filter screen 4 places on the under casing plane and is located the ingate position.

The size of the iron sheet filter screen 2 is larger than the size of the opening outside the ingate.

The distance between the ceramic foam filter screen 4 and the opening outside the ingate is not more than 1/4 transverse gate inner length size and is not less than 40mm, the ceramic foam filter screen 4 is fixed inside the transverse gate and is not loosened by alloy liquid scouring in the pouring process.

The ceramic foam filter screen 4, the steel wire ball 3 and the iron sheet filter screen 2 need to be dried for 5min at a high temperature of more than 200 ℃ before use.

For aluminum alloy or magnesium alloy with better fluidity and magnesium alloy without rare earth, the placing mode of the steel wire ball 3 and the iron sheet filter screen 2 can be adopted.

The steel wire ball 3 is placed at the junction of the ingate and the cross gate and can be manually pulled to be in a loose state.

The size of the iron sheet filter screen 2 is larger than that of the inner pouring gate. The iron sheet filter plate 2 is placed on the upper plane of the bottom box, the intersection of the inner pouring channel and the bottom box is shaped, and the iron sheet filter plate 2 is ensured not to move when the box is closed.

The utility model discloses a foamed ceramic filter screen utilizes its cellular structure effectively to slow down the flow of alloy liquid, and effectual superficial sand that will remain in the gating system, the oxidation clamp sediment that produces among the pouring process is isolated outside pouring in, subsides the great oxidation clamp sediment of density in the alloy liquid once more to scouring of steel wire ball 3 through the alloy liquid, and along with the alloy liquid fills the type and rises to the flat department on the under casing, latticed structure's iron sheet filter screen 2 purifies once more to the alloy liquid, utilizes the utility model discloses a it further fills the type to gather the sediment and can effectively block the oxidation clamp sediment and advance to pour water in, has consequently effectively promoted fuse-element purity, has improved the foundry goods quality.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (3)

1. The utility model provides a low differential pressure casting bottom case with pure purification performance of fuse-element, includes gating system (1), collection sediment and current stabilizer, characterized by: the slag collecting and flow stabilizing device is composed of a ceramic foam filter screen (4), a steel wire ball (3) and an iron sheet filter screen (2), the pouring system (1) is composed of a cross gate and an ingate which are communicated, the ceramic foam filter screen (4) is placed at the cross gate of the pouring system, the steel wire ball (3) is placed at the junction position where the cross gate is connected with the ingate, and the ceramic foam filter screen (4) is placed on the upper plane of the bottom box and is located at the ingate position.

2. The low differential pressure casting bottom box with the melt purifying function as claimed in claim 1, wherein: the size of the iron sheet filter screen (2) is larger than the size of the opening outside the ingate.

3. The low differential pressure casting bottom box with the melt purifying function as claimed in claim 1, wherein: the distance between the ceramic foam filter screen (4) and an opening outside the ingate is not more than 1/4 inner length of the cross gate and is not less than 40mm, and the ceramic foam filter screen (4) is fixed inside the cross gate.

Images