CN103056294A - Wax die molding technology of precision casting - Google Patents

Abstract

The invention discloses a wax die molding technology of a precision casting. The molding technology comprises: (1) putting wax materials into a mixer, heating to 45-48 DEG C and stirring into paste; (2) inserting two metal column dies into a flexible die sleeve from two die sleeve holes of the flexible die sleeve, putting the above three into a die cavity of a metal die, and closing an upper die and a lower die of the metal die; (3) pouring the pasty wax materials into the die with a pressure of 3.5 atmospheric pressure, respectively casting a casting body wax die and a sprue wax die, cooling for 30-60 minutes at a normal temperature; (4) opening the upper die and the lower die of the metal die, drawing out the two metal column dies in the metal die, demolding the casting body wax die and the sprue wax die and then putting into a pool for cooling to 22-27 DEG C, and taking out for later use; and (5) trimming the casting body wax die prepared in the step (4), and bonding the sprue wax die with the casting body wax die by using a hot knife of 150 DEG C to obtain the casting wax die. The technology process is simple, convenient to operate, good in casting density, and the casting is consistent in overall specifications, stable in size and small in geometric errors, thereby being high in yield.

Description

The shaping investment pattern technique of hot investment casting

 

Technical field

The invention belongs to casting technique, be specifically related to a kind of shaping investment pattern technique of hot investment casting.

 

Background technology

In the production, mould has obtained using very widely, uses particularly extensive in foundry industry now.Although casting technique has had very great development, it generally still adopts traditional sand casting, metal type cast, and this class methods shortcoming is that the packing of foundry goods differs, and has affected the durability of foundry goods; Being not quite similar of each modular construction of foundry goods of conventional method processing and specification, complex process, the foundry goods centre repair welding polishing of processing is very difficult.

 

Summary of the invention

The problems referred to above that exist in order to overcome the prior art field the object of the invention is to, and a kind of shaping investment pattern technique of hot investment casting is provided, and solve existing wax-pattern complex process, the foundry goods centre repair welding polishing hard problem of processing.

The shaping investment pattern technique of hot investment casting provided by the invention, the moulding process step is as follows:

(1) wax material is put into mixer, be heated to 45-48 ℃, stir into pasty state;

(2) two metal column moulds are planted into the pliability die sleeve by two die sleeve holes of pliability die sleeve respectively, and this three is placed in the die cavity of metal die, make again it close upper and lower mould;

(3) wax material with pasty state injects in the mould with 3.5 atmospheric pressure, carries out respectively the cast of casting body wax-pattern and cast gate spare wax-pattern, normal temperature cooling 30-60 minute;

(4) the upper and lower mould of opening metal mould detaches the two metal column moulds that are placed in one, and puts into the pond after casting body wax-pattern and the demoulding of cast gate spare wax-pattern and is cooled to 22-27 ℃, takes out for subsequent use;

(5) the casting body wax-pattern made of step (4) is repaired, and then with 150 ℃ boiling hot cutter cast gate spare wax-pattern and casting body wax-pattern is bonded together, and obtains casting wax-pattern.

The shaping investment pattern technique of hot investment casting provided by the invention, its beneficial effect are, the simple convenient operation of this technological process, and the packing of foundry goods is good, and whole specification is consistent, and dimensionally stable, morpheme error are little, and yield rate is high; The wax-pattern raw material can also utilize after reclaiming again, has saved raw material, has reduced production cost.

 

The specific embodiment

Below in conjunction with embodiment, the shaping investment pattern technique to hot investment casting provided by the invention is described in detail.

Embodiment

The shaping investment pattern technique of the hot investment casting of the present embodiment, the moulding process step is as follows: wax material is put into mixer, be heated to 45-48 ℃, stir into pasty state; (2) two metal column moulds are planted into the pliability die sleeve by two die sleeve holes of pliability die sleeve respectively, and this three is placed in the die cavity of metal die, make again it close upper and lower mould; (3) wax material with pasty state injects in the mould with 3.5 atmospheric pressure, carries out respectively the cast of casting body wax-pattern and cast gate spare wax-pattern, normal temperature cooling 30-60 minute; (4) the upper and lower mould of opening metal mould detaches the two metal column moulds that are placed in one, and puts into the pond after casting body wax-pattern and the demoulding of cast gate spare wax-pattern and is cooled to 22-27 ℃, takes out for subsequent use; (5) the casting body wax-pattern made of step (4) is repaired, and then with 150 ℃ boiling hot cutter cast gate spare wax-pattern and casting body wax-pattern is bonded together, and obtains casting wax-pattern.The simple convenient operation of this technological process, the packing of foundry goods is good, and whole specification is consistent, and dimensionally stable, morpheme error are little, and yield rate is high; The wax-pattern raw material can also utilize after reclaiming again, has saved raw material, has reduced production cost.

Claims (1)

1. the shaping investment pattern technique of a hot investment casting, it is characterized in that: the moulding process step is as follows:

(1) wax material is put into mixer, be heated to 45-48 ℃, stir into pasty state;

(2) two metal column moulds are planted into the pliability die sleeve by two die sleeve holes of pliability die sleeve respectively, and this three is placed in the die cavity of metal die, make again it close upper and lower mould;

(3) wax material with pasty state injects in the mould with 3.5 atmospheric pressure, carries out respectively the cast of casting body wax-pattern and cast gate spare wax-pattern, normal temperature cooling 30-60 minute;

(4) the upper and lower mould of opening metal mould detaches the two metal column moulds that are placed in one, and puts into the pond after casting body wax-pattern and the demoulding of cast gate spare wax-pattern and is cooled to 22-27 ℃, takes out for subsequent use;

(5) the casting body wax-pattern made of step (4) is repaired, and then with 150 ℃ boiling hot cutter cast gate spare wax-pattern and casting body wax-pattern is bonded together, and obtains casting wax-pattern.