CN207013684U - Convey the stalk of casting molten metal and its casting mould of application - Google Patents

Abstract

It the utility model is related to a kind of casting mould for the stalk and its application for conveying casting molten metal, it is characterized in that, include substantially tubular skeleton body, relief region is respectively arranged with inside and outside the skeleton body, inside holding coating and external thermal insulation coating is coated in the relief region inside and outside respectively, the mechanical strength of the skeleton body is more than the external thermal insulation coating, the mechanical strength of inside holding coating；The external thermal insulation coating and inside holding coating are the coatings made of adiabatic mineral compound, and it includes aluminum oxide, talcum powder, mica, diatomite and titanium oxide.So it is easy to the maintenance of the stalk, extends the life-span of the stalk.

Description

Convey the stalk of casting molten metal and its casting mould of application

Technical field

The present invention relates to a kind of accessory applied on casting mould, more particularly to a kind of liter for feeding molten metal Liquid pipe.

Background technology

Stalk is a kind of transition delivery pipe being installed between casting mold cavity and liquation storage chamber, for the liquation Molten metal in cavity volume is transported to the casting that metal casting is carried out in the casting mold cavity.At present, relatively conventional stalk Generally steel pipe, iron pipe or earthenware, but either steel pipe, iron pipe or earthenware, effect is all less desirable, main cause It is that the thermal conductivity of the steel pipe and iron pipe is high, heat insulation effect is poor.Although the earthenware low thermal conductivity, protecting effect is good, It is easier to damage during use, broken potsherd, which can pollute molten metal, influences metal casting quality, and Also it is very easy to damage in the process for dismantling the earthenware, results in the need for the earthenware constantly more renewed, so not only Maintenance cost is increased, the manufacturing schedule also delayed.

In view of the above-mentioned problems, Chinese utility patent 201120371120.4 proposes a kind of combination stalk, it includes steel The supervisor of matter or irony (1), the supervisor (1) be arranged with by aluminium carbonate or alumina silicate or carborundum or silicon nitride or corundum or The neck bush (2) and external bushing (3) that quartz is made, one end of the supervisor (1) are provided with and neck bush (2) and external bushing (3) end face is close to form the sealing ring (4) for sealing and then preventing that aluminium liquid from contacting with being responsible for (1), and the other end of the supervisor (1) is set Have and be close to form the ring assembly for sealing and then preventing that aluminium liquid from contacting with being responsible for (1) with neck bush (2) and external bushing (3) end face (9).The combination stalk for being used for low pressure casting die of aluminum alloy hub has service life length, lower-cost advantage.

The content of the invention

The combination stalk proposed in above-mentioned patent 201120371120.4 solves stalk insulation effect in the prior art Fruit is undesirable, is easily damaged, the problem of service life is short.But the combination stalk proposed in patent 201120371120.4 Structure is relative complex, is also not easy to repair after damage.

In consideration of it, it is necessary to be improved further the structure of the stalk.The present invention proposes a kind of conveying casting With the stalk of molten metal, it is characterised in that include substantially tubular skeleton body, divide inside and outside the skeleton body Relief region is not provided with, inside holding coating and external thermal insulation coating are coated respectively in the relief region inside and outside, The mechanical strength of the skeleton body is more than the external thermal insulation coating, the mechanical strength of inside holding coating；The external thermal insulation coating and Inside holding coating is the coating made of adiabatic mineral compound.

Wherein, the stalk is a kind of transition delivery pipe being arranged between casting mold cavity and liquation storage chamber, is used for Convey casting molten metal.

Wherein, the skeleton body is substantially tubular, and features described above defines the architectural feature of the skeleton body, in the bone Upper end pore is provided with the upper end top surface of support body, and lower end pore is provided with the top surface of lower end, the upper end pore and lower end Pipeline is provided with and communicated between pore.Further, the pipeline of the skeleton body tapers into from bottom to top.The skeleton body is As support, the base rack body of shape the external thermal insulation coating and inside holding coating, when the external thermal insulation coating and inside holding It is also substantially tubular after coating is coated to the dry sizing of system on the skeleton body.

In addition, it is necessary to explanation, the upper end top surface and the lower end top surface be with the relative bearing residing for them to Name is given, usually in the case where the stalk is in installment state, face above is defined as upper end top surface, conversely Definition be lower end top surface.In the case of being not particularly illustrated below, the upper end top surface and the lower end top surface are using above-mentioned Identical defines.

Wherein, relief region is respectively arranged with inside and outside the skeleton body, the relief region inside and outside Upper that external thermal insulation coating and inside holding coating are coated respectively, features described above further defines the structure of the skeleton body, described Relief region refers to the region with sag and swell body.The relief region can be by the medial surface of the skeleton body and outer Salient point is respectively arranged with side to be formed.Wherein, the salient point is that relative protrusion is arranged on the medial surface of the skeleton body and outer Convex tectosome on side, hesitate big marine isolated island.So, the inside holding coating can be increased by the salient point And the external thermal insulation coating frictional force between the medial surface and lateral surface of the skeleton body respectively, applied so as to optimize the inside holding The adhesive force of layer and external thermal insulation coating, the inside holding coating and external thermal insulation coating is set to be not easy under being peeled off from the skeleton body Come.Or it is respectively arranged with inner groovy on the medial surface and lateral surface of the skeleton body and external groove is formed.Wherein, institute It is the recessed tectosome being arranged on the medial surface and lateral surface of the skeleton body that is recessed to state inner groovy and external groove, in the indent Also the host cavity that depression is set is formed on groove and external groove, so, can not only be excellent by the inner groovy and external groove Change the adhesive force of the inside holding coating and external thermal insulation coating, additionally it is possible to house the substantial amounts of adiabatic mineral compound, increase The thickness of the inside holding coating and external thermal insulation coating, and reduce the consumable quantity of the skeleton body.And in order to reduce in described Influence of the setting of groove and external groove to the skeleton body mechanical strength, further technical scheme are also possible that in described Groove and external groove shift to install.So, seen in radial direction, the inner groovy and external groove be not using the cloth of face setting Office's mode, makes the skeleton body that there is rational wall thickness to set without causing local wall body excessively thin and influence its machinery by force Degree.

Wherein, the mechanical strength of the skeleton body is more than the external thermal insulation coating, the mechanical strength of inside holding coating, above-mentioned Technical characteristic defines the relatively described external thermal insulation coating of the skeleton body, inside holding coating has more excellent mechanical strength. The mechanical strength refers to resist destruction under external force（Deformation and fracture）Ability.So the skeleton body has foot Enough mechanical strengths support, shape the external thermal insulation coating and inside holding coating, also make with enough mechanical strength resistances The external force born during or during the handling stalk, ensure the skeleton body during long-term use with And will not easily it be damaged after experience being dismounted for multiple times.

Wherein, the main constituents of the adiabatic mineral compound are aluminum oxide, talcum powder, mica, diatomite and oxygen Change titanium, but be not precluded from also including other auxiliary elements.The external thermal insulation applies made of the adiabatic mineral compound Layer and inside holding coating can not only have high-temperature stability, additionally it is possible to resist the rotten of molten metal.Secondly, the adiabatic ore deposit Thing compound also makes the external thermal insulation coating and inside holding coating have the characteristic of low thermal conductivity, so as to reduce gold in large quantities Belong to scattering and disappearing for liquation heat.In addition, the aluminum oxide, talcum powder, mica, diatomite and titanium oxide turn into after adding liquid agitation The adiabatic mineral compound of semisolid, now described adiabatic mineral compound are a kind of semisolids of similar clay, With certain adhesion characteristics and plasticity, by the adiabatic mineral compound be coated on respectively inside and outside the embossed area The external thermal insulation coating and inside holding coating are become after dry sizing is made on domain, when the external thermal insulation coating and inside holding coating go out It can be repaired after the now damage such as rupture, defect by smearing the adiabatic mineral compound again, it can be seen that, with described The external thermal insulation coating and inside holding coating made of adiabatic mineral compound, which also have, easily repairs characteristic.

According to above-mentioned technical proposal, compared with prior art, advantageous effects of the invention are：

1. because the mechanical strength of the skeleton body is more than the mechanical strength of the external thermal insulation coating, inside holding coating, institute State skeleton body and can not only support, shape the external thermal insulation coating and inside holding coating, also resisted with enough mechanical strengths The external force born in use or during the handling stalk, ensures the skeleton body during long-term use And will not easily be damaged after experience being dismounted for multiple times, be advantageous to extend the service life of the stalk.

2. because the external thermal insulation coating and inside holding coating are the coatings made of adiabatic mineral compound, it includes Aluminum oxide, talcum powder, mica, diatomite and titanium oxide, so, can be common by the external thermal insulation coating and inside holding coating Reduce scattering and disappearing for the heat for the molten metal being transported in the stalk.Secondly, the adiabatic mineral compound has certain Adhesion characteristics, the external thermal insulation coating and inside holding coating is consolidated and is closely coated on the skeleton body, and It need not set in addition the external thermal insulation coating and the fixed setting of inside holding coating to the fixing device on the skeleton body, greatly The earth simplifies the structure of the stalk.Again, also due to the external thermal insulation coating and inside holding coating are by adiabatic mineral Coating made of compound, so can lead to after the damage such as rupture, defect occur in the external thermal insulation coating and inside holding coating Cross and smear the adiabatic mineral compound again and repaired, can be in breakage particularly in the case where there is little damage The adiabatic mineral compound is filled up in area, it is not necessary to external thermal insulation coating described in integral replacing and inside holding coating, is more not required to Stalk described in integral replacing is wanted, the stalk repeated multiple times can use, and so, have by the adiabatic mineral compound The stalk of manufactured the external thermal insulation coating and inside holding coating not only easy maintenance, additionally it is possible to maintenance cost is reduced, Greatly extend service life.

Together with the stalk is easily connected with the casting mold cavity of casting mould, further technical side Case, which is also possible that on the upper end top surface of the skeleton body, is provided with connection bulge loop, and the upper end pore of the skeleton body is arranged on In the ring of the connection bulge loop in space.So, the connection bulge loop can't block the upper end pore and influence the liter Liquid pipe transmits molten metal.Further technical scheme be can also be, connection method is provided with the bottom of the skeleton body It is blue.

The present invention is except proposing a kind of new stalk, it is also proposed that a kind of casting mould using the stalk, Characterized in that, the casting mould includes bottom plate and the casting mold cavity for being used to cast being arranged on above the bottom plate, Also include the stalk, the upper end of the stalk is upward through the bottom plate and is connected with the casting mold cavity, and institute The bottom for stating stalk is connected on the bottom plate.

Further technical scheme, which is also possible that, also includes sprue bush, the upper end of the sprue bush and the casting Die cavity connects, and bottom is in space in the ring of the connection bulge loop.So, the bottom of the sprue bush is by institute Connection bulge loop is stated to be positioned.

Further technical scheme is also possible that the pressing plate for also including and being arranged on below the bottom plate, the stalk Adpting flange support on the pressing plate, trip bolt is locked on the bottom plate through the pressing plate.So, it is described by The bottom plate support, the positioning stalk, it is convenient not only to dismount, nor easily to the external thermal insulation coating and inside holding Coating causes to damage.

Because the present invention has These characteristics and advantage, the stalk of conveying casting molten metal is may apply to for this And its casting mould of application.

Brief description of the drawings

Fig. 1 is the cross-sectional view of the skeleton body；

Fig. 2 is the cross-sectional view using the stalk of technical solution of the present invention；

Fig. 3 is the cross-sectional view using the casting mould of the stalk；

Fig. 4 is the A portions enlarged drawing in Fig. 3.

Embodiment

It is a kind of stalk 2 for feeding molten metal as depicted in figs. 1 and 2, the stalk 2 is included substantially in pipe The skeleton body 20 of shape, is coated external thermal insulation coating 21 respectively on the lateral surface and medial surface of the skeleton body 20 and inside holding applies Layer 22；The mechanical strength of the skeleton body 20 is more than the external thermal insulation coating 21, the mechanical strength of inside holding coating 22；It is described outer Heat insulation coating 21 and inside holding coating 22 are adiabatic mineral compounds, its include aluminum oxide, talcum powder, mica, diatomite and Titanium oxide.

The structure of the stalk of application technical solution of the present invention is further described with reference to accompanying drawing first below.

As shown in figure 1, the skeleton body 20 is substantially tubular, upper end pore 201, lower end are provided with its upper end top surface Lower end pore 202 is provided with top surface, pipeline 200, institute are provided with and communicated between the upper end pore 201 and lower end pore 202 The caliber for stating pipeline 200 tapers into from bottom to top.Connection bulge loop 202 is provided with the upper end top surface of the skeleton body 20, The upper end pore 201 of the skeleton body 20 is arranged in the ring of the connection bulge loop 202 in space 2020.In the skeleton body 20 Bottom on be provided with adpting flange 204.The skeleton body 20 is used as supporting, shaping the external thermal insulation coating 21 and Nei Bao The base rack body of warm coating 22, when the external thermal insulation coating 21 and inside holding coating 22 are coated to make on the skeleton body 20 and done It is also substantially tubular after sizing.

In the application of reality, the skeleton body 20 do not need only to have enough mechanical strength supports, shape it is described outer Heat insulation coating 21 and inside holding coating 22, it is also necessary to there is enough mechanical strength resistances during the stalk 2 is loaded and unloaded The external force born, ensure easily to damage after being dismounted for multiple times is undergone, so it is excellent to need the skeleton body 20 to have Different mechanical strength, its mechanical strength are more than the external thermal insulation coating 21, the mechanical strength of inside holding coating 22.On meeting Requirement is stated, the skeleton body 20 is preferably using the manufacture of the metal materials such as steel, iron.

As shown in Fig. 2 it is coated respectively on the lateral surface and medial surface of the skeleton body 20 by adiabatic mineral compound Manufactured the external thermal insulation coating 21 and inside holding coating 22, the main constituents of the adiabatic mineral compound are oxidation Aluminium, talcum powder, mica, diatomite and titanium oxide, but be not precluded from also including other auxiliary elements.With the adiabatic mineral The external thermal insulation coating and inside holding coating made of compound not only have the characteristic of low thermal conductivity, can reduce gold in large quantities Belong to scattering and disappearing for liquation heat, also with corrosion resistance characteristic, effectively can be reduced or avoided to go out after contacting with molten metal for a long time Phenomena such as existing rotten, and high-temperature stability, it can resist by the heat that molten metal passes over without easily occurring Melt and damage.

The aluminum oxide, talcum powder, mica, diatomite and titanium oxide turn into the described exhausted of semisolid after adding liquid agitation Hot mineral compound, now described adiabatic mineral compound are a kind of semisolids of similar clay, have certain adhesion Characteristic and plasticity, the adiabatic mineral compound is coated on respectively to make on the lateral surface and medial surface of the skeleton body 20 and done The external thermal insulation coating and inside holding coating are become after sizing, so, is glued by possessed by the adiabatic mineral compound Attached characteristic, the external thermal insulation coating 21 and inside holding coating 22 is consolidated and be closely coated on the interior of the skeleton body 20 On side and lateral surface, the external thermal insulation coating and the fixed setting of inside holding coating are arrived the skeleton without setting in addition Fixing device on body, it significantly simplify the structure of the stalk.And when the external thermal insulation coating 21 and inside holding apply Layer 22 can be repaired after there is the damage such as rupture, defect by smearing the adiabatic mineral compound again, particularly exist In the case of there is little damage, the adiabatic mineral compound can be filled up in damage zone, it is not necessary to integral replacing institute External thermal insulation coating 21 and inside holding coating 22 are stated, does not need stalk 2 described in integral replacing more, the stalk 2 can be repeatedly It is used for multiple times, so, there is the external thermal insulation coating 21 and inside holding coating 22 made of the adiabatic mineral compound The stalk 2, which has, easily repairs characteristic, easy maintenance, additionally it is possible to reduce maintenance cost, greatly extend service life.

When manufacturing the stalk 2, the adiabatic ore deposit is smeared respectively on the lateral surface and medial surface of the skeleton body 20 Thing compound, just distinguish after the dry sizing of the adiabatic mineral compound system on the lateral surface and medial surface of the skeleton body 20 Form the external thermal insulation coating 21 and inside holding coating 22.And in order to optimize the adhesive force of the heat insulation coating, except can With by the way that outside being improved to the physical property of the adiabatic mineral compound, the structure to the skeleton body 20 can also be passed through It is improved.

As shown in figure 1, it is also respectively provided with salient point on the medial surface and lateral surface of the skeleton body 20（This project plan comparison Simply, accompanying drawings are omitted）.The salient point region forms the relief region.Wherein, the salient point is relative protrudes The convex tectosome being arranged on the medial surface and lateral surface of the skeleton body 20, hesitate big marine isolated island.So, by The salient point can increase the inside holding coating 22 and external thermal insulation coating 21 respectively with the medial surface of the skeleton body 20 and outer Frictional force between side, so as to optimize the adhesive force of the inside holding coating 22 and external thermal insulation coating 21, make the inside holding Coating 22 and external thermal insulation coating 21 are not easy to peel off from the skeleton body 20.

Or as shown in figure 1, it is respectively arranged with inner groovy 206 on the medial surface and lateral surface of the skeleton body 20 With external groove 205, the inner groovy 206 and the region of external groove 205 form the relief region.Wherein, the inner groovy 206 and external groove 205 be that depression is arranged on recessed tectosome on the medial surface and lateral surface of the skeleton body 20, in the indent Also the host cavity that depression is set is formed on groove 206 and external groove 205, so, by the inner groovy 206 and external groove 205 can not only optimize the adhesive force of the inside holding coating 22 and external thermal insulation coating 21, additionally it is possible to house substantial amounts of described exhausted Hot mineral compound, increases the thickness of the inside holding coating 22 and external thermal insulation coating 21, and reduces the skeleton body 20 Consumable quantity.

And in order to reduce influence of the setting of the inner groovy 206 and external groove 205 to the mechanical strength of skeleton body 20, Further technical scheme is that the inner groovy 206 and external groove 205 shift to install.So, seen in radial direction, it is described interior The layout type that groove 206 and external groove 205 are not set using face, makes the skeleton body 20 be set with rational wall thickness Its mechanical strength is influenceed without causing local wall body excessively thin.

The present invention is except proposing a kind of stalk 2 of new structure, it is also proposed that a kind of casting using the stalk 2 Mould 100, as shown in Figure 3 and Figure 4, the casting mould 100 include bottom plate 11 and are arranged on the top of bottom plate 11 Casting mold cavity 1 for casting.Sprue bush 4 is provided with and communicated with the charging aperture of the casting mold cavity 1.The stalk 2 Upper end is upward through the bottom plate 11 and is connected with the sprue bush 4, and the bottom 42 of the sprue bush 4 is fitted to the connection In the ring of bulge loop 202 in space 2020.So, the bottom of the sprue bush 4 is positioned by the connection bulge loop 202. For the support of adpting flange 204 on the bottom of stalk 2 on pressing plate 3, the pressing plate 3 sets the lower section of the bottom plate 11, Trip bolt is locked on the bottom plate 11 through the pressing plate 3.So, it is described by described in the support of bottom plate 11, positioning Stalk 2, it is convenient not only to dismount, nor easily the external thermal insulation coating 21 and inside holding coating 22 is caused to damage.

Claims (7)

1. convey the stalk of casting molten metal, it is characterised in that include substantially tubular skeleton body, the skeleton Relief region is respectively arranged with inside and outside body, inside holding coating is coated respectively in the relief region inside and outside With external thermal insulation coating, the mechanical strength of the skeleton body is more than the external thermal insulation coating, the mechanical strength of inside holding coating；It is described External thermal insulation coating and inside holding coating are the coatings made of adiabatic mineral compound.

2. the stalk of conveying casting molten metal according to claim 1, it is characterised in that the pipe of the skeleton body Footpath tapers into from bottom to top.

3. the stalk of conveying casting molten metal according to claim 1 or 2, it is characterised in that in the skeleton Connection bulge loop is provided with the upper end top surface of body, the upper end pore of the skeleton body is arranged on space in the ring of the connection bulge loop It is interior.

4. the stalk of conveying casting molten metal according to claim 3, it is characterised in that in the skeleton body Bottom is provided with adpting flange.

5. the casting mould of the application any stalk of Claims 1-4, it is characterised in that the casting mould includes Bottom plate and the casting mold cavity for being used to cast being arranged on above the bottom plate, also include the stalk, the stalk Upper end be upward through the bottom plate and be connected with the casting mold cavity, and the bottom of the stalk is connected in the bottom plate On.

6. casting mould according to claim 5, it is characterised in that also include sprue bush, the upper end of the sprue bush Portion connects with the casting mold cavity, and bottom is in space in the ring of the connection bulge loop of the skeleton body.

7. the casting mould according to claim 5 or 6, it is characterised in that also include and be arranged on below the bottom plate Pressing plate, for the adpting flange support of the skeleton body on the pressing plate, trip bolt is locked to the bottom plate through the pressing plate On.