CN208913090U - A kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould - Google Patents
A kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould Download PDFInfo
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- CN208913090U CN208913090U CN201821819236.8U CN201821819236U CN208913090U CN 208913090 U CN208913090 U CN 208913090U CN 201821819236 U CN201821819236 U CN 201821819236U CN 208913090 U CN208913090 U CN 208913090U
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Abstract
The utility model discloses a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting moulds, belong to automobile part production technique field, including sand mold, sand core and running gate system, the running gate system includes sprue, the cross gate that the sprue lower part is arranged in, the ingate that the cross gate two sides are arranged in；Insulated feeder is arranged in inlet flange Middle face with being connected into burner for accumulated slag packet, the exhaust tube body is equipped in the end of the ingate.From casting back into fire, casting type cavity gas is discharged the utility model from inlet flange riser, guarantees in casting process, iron liquid does not wrap up isolated gas bag；On the one hand casting slows down iron liquid to the impact force of type chamber, iron liquid is made steadily to enter type chamber into burner Front-end Design accumulated slag packet, and avoid being mingled with into other casting problems such as slurries；It solves the problems, such as sand buckle stomata, while being also applied for the production casting of triethylamine cold core.
Description
Technical field
The utility model relates to automobile part production technique fields, and in particular to a kind of high-nickel austenite nodular cast iron hair
Motivation exhaust pipe casting mould.
Background technique
High-nickel austenite nodular cast iron automobile engine exhaust pipe has a wide range of applications in medium-to-high grade car.Sand mold
Casting is the basic technology for producing high-Ni-Cr cast iron casting in enormous quantities.Triethylamine method cold core box coremaking has energy-efficient, casting table
The advantages that face is high-quality, and dimensional accuracy is high, and sand core is defeated and dispersed good is suitable for sand casting and produces in enormous quantities.
High-Ni-Cr cast iron has poor fluidity, and solidification shrinkage is big, the process characteristics such as pouring temperature height.Shrinkage Porosity tendency is big, table
Face is easily mingled with, peeling.Exhaust pipe structure is complicated simultaneously, in irregular shape, and runner precision is high, and wall thickness is relatively thin, and casting technique is difficult
Degree is big.
In actual casting production application, since precoated sand weary tolerance is big, the reasons such as Design of Runner System is unreasonable, peeling
Problem happens occasionally.Especially when producing in enormous quantities using triethylamine cold core, running gate system is unreasonable, and peeling is choked fiery especially tight
Weight, rate of wasted casting product are high.In order to improve casting yield, production efficiency is improved, needs to set about from running gate system, seeks one
The ideal solution of kind.
The patent document of Publication No. CN201410432490.2 discloses light-duty vehicle exhaust pipe pouring technology, and feature exists
In including following technical process: the position of cast gate being moved on to the nozzle position among exhaust pipe from avris, manages molten iron from two
Mouthful injection type chamber, so that the intracavitary gas of type is in the case where rising molten iron and pushing, respectively by two casting channels discharges, at the same time again
Timely have adjusted the gap of core print.But in the pouring technology, the intracavitary gas of type is discharged out of casting channel, sand buckle
Choking, fiery phenomenon is serious, and product qualified rate is low.
Summary of the invention
In view of this, the present invention provides a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould,
It solves the problems, such as sand buckle stomata, while being also applied for the production casting of triethylamine cold core.
In order to solve the above technical problems, technical solution adopted in the utility model is:
A kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould, including sand mold, sand core and running gate system, institute
Running gate system is stated to include sprue, the cross gate that the sprue lower part is arranged in, be arranged in the cross gate two sides and pour
Road；The end of the ingate being connected with accumulated slag packet is equipped with into burner, and the exhaust tube body is in inlet flange Middle face
Insulated feeder is set.
Further, back and/or the outlet flange face that exhaust tube body is set into burner.
Further, the accumulated slag packet height is higher than described into 15 ~ 45mm of burner, and the accumulated slag packet is rectangular riser or circle
Shape riser.
Further, the exhaust pipe is four cylinders or six cylinder exhaust pipes.
Further, the running gate system is one-mold multiple-member.
The beneficial effects of the utility model are:
Previous mo(u)lding line production, a mould two pieces, inlet flange face riser are positive into fire.This production technology, triethylamine cold core
Trial production, bleb ratio is up to 30%, therefore actual production uses always hot box process, even hot core, in summer sky
Under the environment of gas humidity, sand buckle stomata ratio can also reach fast 20%.Later, sunykatuib analysis, discovery are carried out to casting technique
Peeling position is that iron liquid crosses position, and iron liquid crosses and wraps up type cavity gas, forms isolated gas bag.Sand buckle is produced before
Problem is serious, if to be fully solved casting cold core peeling problem, needs that iron liquid is avoided to cross in pipe wall position, isolated gas occurs
Packet.
On this basis, mold and technique are redesigned, in casting into burner, design has accumulated slag packet, and accumulated slag packet can have
Variform can be rectangular riser, be also possible to round riser, and single accumulated slag packet height is higher than into 15 ~ 45mm of burner or so.Type chamber
Gas is successively expelled to inlet flange riser, does not form isolated gas bag in pipe wall position,
From casting back into fire, casting type cavity gas is discharged the utility model from inlet flange riser, guarantees casting process
In, iron liquid does not wrap up isolated gas bag.On the one hand casting slows down iron liquid to the impact force of type chamber into burner Front-end Design accumulated slag packet,
So that iron liquid is steadily entered type chamber, and avoids being mingled with into other casting problems such as slurries.
The utility model changes original Design of Runner System mode completely, answers triethylamine cold core process conscientiously
Use in actual production, using one-mold multiple-member, improve production efficiency, saved production cost, casting substantially without skin effect phenomenon,
Qualification rate reaches 96.5% or more.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the running gate system of the casting mould of the utility model embodiment one.
Fig. 2 is the structural schematic diagram of the running gate system of the casting mould of the utility model embodiment two.
Fig. 3 is the structural schematic diagram of the running gate system of the casting mould of the utility model embodiment three.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The attached drawing 1-3 of type embodiment, is clearly and completely described the technical solution of the utility model embodiment.Obviously, described
Embodiment be the utility model a part of the embodiment, instead of all the embodiments.Based on described the utility model
Embodiment, those of ordinary skill in the art's every other embodiment obtained fall within the protection scope of the utility model.
Embodiment one
As shown in Figure 1, this embodiment offers a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould, packet
Include sand mold, sand core and running gate system, the running gate system include sprue 1, the cross gate 2 that 1 lower part of sprue is set,
The ingate 4 of 2 two sides of cross gate is set；The end of the ingate 4 being connected with accumulated slag packet 3 is equipped with into burner,
Insulated feeder 5 is arranged in the exhaust tube body 9 in the middle part of inlet flange face 6.The back that exhaust tube body 9 is set into burner
Portion and outlet flange face 7.3 height of accumulated slag packet be higher than it is described into 15 ~ 45mm of burner, the accumulated slag packet 3 be rectangular riser or
Round riser.The exhaust pipe is four cylinder exhaust pipes.The running gate system is a mould six.
Wherein, in the present embodiment, sprue 1 is vertical with cross gate 2 to be connect, and the number of cross gate 2 is four, each horizontal to pour
Three ingates 4 are connected on road 2, the two sides of single cross gate 2 are arranged in three ingates 4.It sprue 1, cross gate 2 and interior pours
The inside in road 4 is connected.In the present embodiment, amount to six exhaust tube bodies 9, each exhaust tube body 9 is at back and outlet
The end face of flange 7 is respectively provided with into burner, and wherein the accumulated slag packet 3 being arranged into burner end at back is rectangular riser, outlet flange 7
The accumulated slag packet 3 that end face is arranged into burner end is round riser.Two insulated feeders 5 are set in the middle part of inlet flange 6.Actual production
In, type cavity gas is successively expelled to inlet flange riser, does not form isolated gas bag in pipe wall position, two subsidiary factories of casting directly make
It is produced with triethylamine cold core, casting is without peeling problem.
Embodiment two
As shown in Fig. 2, being this embodiment offers a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould
The improvement carried out on the basis of example 1, what is different from the first embodiment is that the number of cross gate 2 is six in the present embodiment
A, the end of each cross gate 2 is all connected with a short circuit ingate 8, and each short circuit ingate 8 connects two ingates 4, inside pours
The end in road 4 being connected with accumulated slag packet 3 is equipped with into burner.Two accumulated slag packets 3 are round riser, are set in the middle part of inlet flange 6
Set three insulated feeders 5.The present embodiment is similarly a mould six, does not form isolated gas bag in pipe wall position, uses triethylamine
Cold core production, casting is without peeling problem.
Embodiment three
As shown in figure 3, being this embodiment offers a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould
The improvement carried out on the basis of example 1, what is different from the first embodiment is that the present embodiment is a mould eight, cross gate includes
Two first four second cross gates 22 cross gate 21 and be arranged on the first cross gate 21 at 1 both ends of sprue are set,
Wherein, two the second cross gates 22 are set on first cross gate 21, and the end of the second cross gate 22 is connected with ingate 4
It connects.Eight 9 bilateral symmetries of exhaust tube body are identical up and down.The present embodiment is similarly a mould eight, is not formed in pipe wall position
Isolated gas bag, is produced, casting is without peeling problem using triethylamine cold core.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (5)
1. a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould, including sand mold, sand core and running gate system, special
Sign is: the running gate system includes sprue, the cross gate that the sprue lower part is arranged in, is arranged in the cross gate two
The ingate of side；The end of the ingate being connected with accumulated slag packet is equipped with into burner, and the exhaust tube body is in air inlet method
Insulated feeder is arranged in blue Middle face.
2. a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould as described in claim 1, it is characterised in that:
Back and/or the outlet flange face that exhaust tube body is set into burner.
3. a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould as described in claim 1, it is characterised in that:
For the accumulated slag packet height higher than described into 15 ~ 45mm of burner, the accumulated slag packet is rectangular riser or round riser.
4. a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould as described in claim 1, it is characterised in that:
The exhaust pipe is four cylinders or six cylinder exhaust pipes.
5. a kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould as described in claim 1, it is characterised in that:
The running gate system is one-mold multiple-member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819236.8U CN208913090U (en) | 2018-11-06 | 2018-11-06 | A kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819236.8U CN208913090U (en) | 2018-11-06 | 2018-11-06 | A kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould |
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| Publication Number | Publication Date |
|---|---|
| CN208913090U true CN208913090U (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821819236.8U Active CN208913090U (en) | 2018-11-06 | 2018-11-06 | A kind of high-nickel austenite nodular cast iron exhaust pipe of engine casting mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128032A (en) * | 2018-11-06 | 2019-01-04 | 西峡县内燃机进排气管有限责任公司 | A kind of high-nickel austenite nodular cast iron exhaust pipe of engine back is into fire process |
-
2018
- 2018-11-06 CN CN201821819236.8U patent/CN208913090U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128032A (en) * | 2018-11-06 | 2019-01-04 | 西峡县内燃机进排气管有限责任公司 | A kind of high-nickel austenite nodular cast iron exhaust pipe of engine back is into fire process |
| CN109128032B (en) * | 2018-11-06 | 2024-01-12 | 西峡县内燃机进排气管有限责任公司 | High-nickel austenitic ductile iron engine exhaust pipe back fire feeding process |
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