CN109773127A

CN109773127A - A kind of casting and molding method that the wood that disappears combines

Info

Publication number: CN109773127A
Application number: CN201910205930.3A
Authority: CN
Inventors: 何文东; 洪家朴; 艾明
Original assignee: Wuhu Hiro Heavy Industry Ltd By Share Ltd
Current assignee: Wuhu Hiro Heavy Industry Ltd By Share Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2019-05-21

Abstract

The invention discloses a kind of casting and molding methods that the wood that disappears combines, it is characterized by: a kind of casting and molding method of wood combination that disappears is the following steps are included: (1) carries out moulding to it using resin sand, external mold and the loam core of the casting and molding are divided into two steps and are fabricated separately.Integral casting process scheme of the present invention and wood-mode technology substantially coincide, external mold is made using the white molding of polystyrene, core box outline border is wooden structure, white mould or wooden model can be used in inner cavity gusset, and it to be taken out after white mould embedment sand mold when moulding, the independent moulding of loam core, internal structure will also be taken out, since white mould all takes out, it is not left in sand mold, so all disadvantages of evaporative pattern are all not present after casting, quality is equal to wooden model casting technique, and the formative method combined using the wood of the invention that disappears, both it can guarantee casting quality, save the cost again, meet the customer demand of the high single-piece castings production of quality requirement.

Description

A kind of casting and molding method that the wood that disappears combines

Technical field

The present invention relates to casting techniques field, specially a kind of casting and molding method that the wood that disappears combines.

Background technique

For casting if it is single-piece production, currently used casting technique is evaporative pattern cavityless casting；It is raw if it is small lot It produces, is suitable for wooden model casting；If it is mass production, die cast is easily used.Wooden model and die cast are to do respectively External mold and inner cavity core box out, moulding goes out external mold and loam core respectively, and recombinant matches the casting method of mould mould assembling moulding by casting.Full mold casting Making is to replace common apperance using styrofoam apperance, has been made not taking out apperance with regard to direct casting of molten metal after type, Under the action of molten metal, apperance burning, disappears at gasification, and molten metal replaces spatial position occupied by original apperance, cooling solidifying The casting method of casting needed for being obtained after Gu.Evaporative pattern cavityless casting has its advantage, but disadvantage is also very prominent, such as casting table Area carbon is serious, and thick big position is easy to produce the cinder hole and stomata of polystyrene formation；Since mold strength problem moulding is easy Deformation；Pouring temperature is high, and inner cavity is easy scab etc..The casting quality requirement of some single-piece production is very high, if using disappearing Mould cavityless casting, then be not achieved quality requirement；If cast using wooden model, cost is too high, for this purpose, the wood it is proposed that one kind disappears In conjunction with casting and molding method.

Summary of the invention

The purpose of the present invention is to provide a kind of casting and molding methods that the wood that disappears combines, with solve to propose in background technique Problem.

To achieve the above object, the invention provides the following technical scheme: a kind of casting and molding method that the wood that disappears combines, described It is a kind of disappear wood combine casting and molding method the following steps are included:

(1) moulding is carried out to it using resin sand, external mold and the loam core of the casting and molding are divided into two steps and are fabricated separately；

(2) external mold is placed in sandbox, is embedded to resin sand, overturn sandbox after moulding is completed using artificial progress moulding, After being taken out the polystyrene material inside sandbox using special tool by die joint, casting mold is complete by coating material after completing At；

(3) loam core is also the same, and resin sand is flowed into core box, due to using wooden frame, ensure that intensity；

(4) loam core is taken out out of core box, is taken out foamed material using special tool, then in brushing or flow coat mode Good coating；

(5) external mold made and loam core is good with die combination, the molding of mould assembling casting complete casting.

Preferably, the outline border of the core box manufactures it using wooden materials, and the inner cavity of the core box uses polyphenyl Ethylene foam material or wooden materials are manufactured.

Integral casting process scheme of the present invention and wood-mode technology substantially coincide, and external mold is made using the white molding of polystyrene, core Box outline border is wooden structure, and white mould or wooden model can be used in inner cavity gusset, and to be taken out after white mould embedment sand mold when moulding, loam core Independent moulding, internal structure will also be taken out, and since white mould all takes out, be not left in sand mold, so evaporative pattern after casting All disadvantages are all not present, and quality is equal to wooden model casting technique, and using the formative method of the wood combination of the invention that disappears, Ji Nengbao Casting quality, and save the cost are demonstrate,proved, the customer demand of the high single-piece castings production of quality requirement is met.

Specific embodiment

Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

A kind of a kind of casting and molding method that the wood that disappears combines, it is characterised in that: casting and molding method that the wood that disappears combines The following steps are included:

The outline border of the core box manufactures it using wooden materials, and the inner cavity of the core box uses polystyrene foam Material or wooden materials are manufactured.

The invention discloses a kind of resin sands that evaporative pattern polystyrene foam model is combined with wooden mold to make Type technique.Some casting are single-piece production, if using evaporative pattern cavityless casting technique, casting surface area carbon dreg defect is tight Weight, is not achieved casting quality requirement；If cast using wooden model, only single-piece production, cost is too high.If wood combines using disappearing Formative method, not only can guarantee casting quality, but also save the cost, meet the high single-piece castings production of quality requirement client need It asks.

And integral casting process scheme and wood-mode technology substantially coincide, only the liftability of wooden model is without the concern for too many. External mold is made using the white molding of polystyrene, and core box outline border is wooden structure, and inner cavity gusset is using Bai Mo or wooden model (according to client It needs).It to be taken out after white mould embedment sand mold when moulding, the independent moulding of loam core, internal structure will also be taken out.Finally by external mold and mud Mould, mould assembling moulding by casting are matched in core combination.Since white mould all takes out, be not left in sand mold, thus after casting evaporative pattern institute There is disadvantage to be all not present, quality is equal to wooden model casting technique.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims

1. a kind of casting and molding method that the wood that disappears combines, it is characterised in that: a kind of casting and molding method packet that the wood that disappears combines Include following steps:

2. the casting and molding method that a kind of wood that disappears according to claim 1 combines, it is characterised in that: the outline border of the core box It is manufactured using wooden materials, the inner cavity of the core box uses polystyrene foamed material or wooden materials system It makes.