CN202239485U

CN202239485U - Die adopting dry-sand negative-pressure lost foam for grate steel casting

Info

Publication number: CN202239485U
Application number: CN2011203432418U
Authority: CN
Inventors: 孙爱民; 薛国帧; 江海燕
Original assignee: MA'ANSHAN HAITIAN HEAVY INDUSTRY TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: MA'ANSHAN HAITIAN HEAVY INDUSTRY TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2011-09-14
Filing date: 2011-09-14
Publication date: 2012-05-30
Anticipated expiration: 2021-09-14

Abstract

The utility model discloses a die adopting a dry-sand negative-pressure lost foam for grate steel casting. The die comprises an upper die, a lower die, a template and a sand frame, and is characterized by further comprising a movable loose core, wherein the upper and the lower dies and the sand frame are fixedly connected into a whole; the template with a through groove formed in the center is arranged between the upper die and the lower die; and the movable loose core is arranged in the through groove. As the movable loose core is arranged in the center of the template, the center of the cast grate is hollow, foam consumption is reduced, and the surface of the cast is free from a great amount of foam trashes. Meanwhile, the cost is lowered due to foam reduction.

Description

The dried sand negative-pressure disappearance mould mould of fire grate plate steel-casting

Technical field

The utility model relates to the mould of dried sand negative-pressure lost foam casting fire grate plate steel-casting.

Background technology

In the dried sand negative-pressure lost foam casting process, the catabolite of foam mould is difficult to accomplish that the progress with casting process sees through dope layer eliminating in time synchronously.In case it is not smooth that the catabolite of foam mould is discharged, gently then local carburetting is serious, and is heavy then at cast(ing) surface formation " foam rubbish " slag, even cause foundry goods to be scrapped.Fire grate plate steel-casting is as thick-walled casting, and existing matrix is solid, the foamed plastics of wanting many, so can produce a large amount of foam catabolites in the casting process, cause cast(ing) surface to have a large amount of foam rubbish slags to exist.

Summary of the invention

The utility model problem to be solved provides a kind of novel mould, makes the original thick big solid matrix of fire grate plate, changes the matrix of hollow into, thereby reduces the consumption of foam, avoids occurring the phenomenon that cast(ing) surface significant foam rubbish slag exists.

The dried sand negative-pressure disappearance mould mould of the utility model fire grate plate steel-casting, it comprises upper die and lower die, matrix, sand frame, it is characterized in that: further comprising activity and looses core; Upper and lower mould is fixedly connected in aggregates with sand frame, matrix is placed between the upper and lower mould, and its center has a groove, and activity is loosed core and is arranged in the groove.

The utility model is loosed core owing to being provided with a loose piece at the center of matrix, makes the fire grate plate after cast molding, and its center is empty, has reduced the consumption of foam, has avoided cast(ing) surface to have a large amount of foam rubbish slags to exist.Simultaneously, cost has also been practiced thrift in the minimizing of foam.

Description of drawings

Fig. 1 is the front view of the utility model mould.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the sketch map of the fire grate plate that casts out of this novel die.

Fig. 4 is the sketch map of existing fire grate plate.

The specific embodiment

Can know from Fig. 1, Fig. 2, the dried sand negative-pressure disappearance mould mould of the utility model fire grate plate steel-casting, it comprises patrix 1, counterdie 2, matrix 3, sand frame 4, it is characterized in that: further comprising activity and looses core 5; Upper and lower mould 1,2 is fixedly connected in aggregates with sand frame 4, matrix 3 is placed on upper and lower mould 1, between 2, and its center has a groove, and activity is loosed core and 5 is arranged in the groove.

The utility model is provided with a loose piece at the center of matrix and looses core, and behind forming parts, takes out upper and lower mould earlier like this, and the extraction activity is loosed core then, makes part hollow.

Can know that from Fig. 4 existing fire grate plate is solid cuboid, and in the actual use of fire grate plate, as long as its surfacing.So solid in the middle of the existing fire grate plate also cuts little ice, and goes back waste material simultaneously, and makes cast(ing) surface have a large amount of foam rubbish slags to exist easily.Therefore; We are divided into several built-up sections with the fire grate plate, and are as shown in Figure 3, and promptly two of part two is solid; To satisfy the use needs of fire grate plate; It is hollow to use this novel mould to make the part of centre, has so both practiced thrift material, has avoided cast(ing) surface to have a large amount of foam rubbish slags to exist again.

Can reuse for upper and lower mould and activity are loosed core, so this three's material all adopts aluminium.

Claims

1. the dried sand negative-pressure disappearance mould mould of fire grate plate steel-casting, it comprises patrix (1), counterdie (2), matrix (3), sand frame (4), it is characterized in that: further comprising activity loose core (5); Upper and lower mould (1,2) is fixedly connected in aggregates with sand frame (4), matrix (3) is placed between the upper and lower mould (1,2), and its center has a groove, activity loose core (5) be arranged in the groove.

2. mould according to claim 1 is characterized in that: upper and lower mould (1,2) and activity loose core (5) be aluminum component.