CN105964939A - Cylinder cover casting method - Google Patents
Cylinder cover casting method Download PDFInfo
- Publication number
- CN105964939A CN105964939A CN201610392664.6A CN201610392664A CN105964939A CN 105964939 A CN105964939 A CN 105964939A CN 201610392664 A CN201610392664 A CN 201610392664A CN 105964939 A CN105964939 A CN 105964939A
- Authority
- CN
- China
- Prior art keywords
- core
- cylinder head
- sand
- casting method
- upper water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
Abstract
The invention discloses a cylinder cover casting method. A sand mold is designed according to a cylinder cover, and is cut to multiple sand core units; an upper water cavity sand core is designed as a complete integral structure, and is provided with a through hole; the through hole totally wraps the outer periphery of an air way sand core; a gap is formed between the inner wall of the through hole of the upper water cavity sand core and the air way sand core; the upper water cavity sand core and the air way sand core are synchronously and integrally printed; then, all the sand core units are combined as a whole to form the complete sand mold; and the sand mold is cast to obtain the cylinder cover. The cylinder cover casting method reduces the sand core number, can effectively shorten the core assembly working time, enables the upper water cavity sand core to have no binding gaps, cannot generate cracks in pouring, improves the casting quality, needs no adhesive, and solves the problem of fire boiling caused by no drying of the adhesive in the casting pouring process.
Description
Technical field
The present invention relates to metalwork casting technology field, particularly relate to the casting method of a kind of cylinder head.
Background technology
The effect of cylinder head is sealing cylinder, is collectively forming combustion space with piston, and bears high-temperature high-pressure fuel gas
Effect.Cylinder head is born gas force and fastens the mechanical load that bolt cylinder is caused, simultaneously due also to fire with high temperature
Gas contacts and bears the highest thermic load.In order to ensure the excellent sealing of cylinder, cylinder head can not be damaged, the most not
Can deformation.The inner cavity configuration of diesel engine cylinder head is extremely complex, different from conventional cylinder head upper water cavity,
The fully wrapped around air flue of this upper water cavity, conventional forging type is upper water cavity to be split as two pieces of cores, in core assembly process
In, the organic binder bonds such as first group water cavity bottom, then organizes air flue, organize water cavity top the most again, blend compounds mixture will
Water cavity upper and lower is bonded together.But this bonding mode can not stop gluing at upper water cavity during casting completely
The problem that fash occurs at knot, space residing for fash is less and at cast-internal, structure is complex, conventional
Fash at this cannot be cleared up by cleaning tool, it is therefore necessary to makes dedicated cleaning tool, and cleaning is wasted time and energy,
Production efficiency is low.It addition, the organic binder bond used must be dried, fire of choking otherwise can be caused in casting process to lead
Cause foundry goods is scrapped, and yield rate is low, and economic benefit is low.
Summary of the invention
The technical assignment of the technical problem to be solved and proposition is to improve prior art, it is provided that one
Planting the casting method of cylinder head, solving forging type traditional in current technology can occur draping over one's shoulders in the bonding part of upper water cavity
Seam, cleaning difficulty, organic binder bond must be dried, and is otherwise likely to result in casting process fire of choking and causes foundry goods to be scrapped,
The problem that production efficiency is low.
For solving above technical problem, the technical scheme is that
The casting method of a kind of cylinder head, prints and casting including modeling, 3D, it is characterised in that specifically add work step
Suddenly include the following:
A, according to Cylinder head design sand mold, and if sand mold is divided into the core unit of stem portion, soft with drawing
Part designs the threedimensional model of each core unit, and upper water cavity core therein is complete integrative-structure, upper water cavity sand
Be provided with through hole on core, and through hole be completely encapsulated in the periphery of air flue core, the through-hole wall of upper water cavity core with
Having space between air flue core, space is being taken up space of cylinder-head port wall；
B, the model file of core unit is imported in 3D printer, beat according to model file in print job case
Printing off each core unit, upper water cavity core one Tong Bu with air flue core prints；
C, being combined into one by each core unit forms complete sand mold, carries out casting and obtain cylinder head in sand mold.
Traditional split type upper water cavity core design is integral type knot by the casting method of cylinder head of the present invention
Structure, owing to the two ends bore of air flue core is more than its bore being positioned at upper water cavity core through hole, therefore air flue core
Directly cannot pass from the through hole of upper water cavity core and assemble, traditional forging type all must be by upper water cavity core
Being decomposed into two parts along lead to the hole site and could realize the combination of core, the present invention uses 3D to print upper water cavity core
One Tong Bu with air flue core prints so that upper water cavity core can be designed as a complete unitary members, on
Water cavity core and air flue core become an entirety, and the gap so that upper water cavity core does not bond is being watered
Fash would not occur during type casting moulding, reduce the cleaning difficulty of foundry goods, saved clearance time, improve production
Efficiency, the gap that the most do not bonds also is no need for using binding agent, eliminates the step drying binding agent, the most not
There will be fire of choking in casting process causes foundry goods to be scrapped, and improves production efficiency further, and improves casting quality,
Improve production economy benefit greatly.
Further, the described through-hole wall on upper water cavity core along the circumferential direction closes completely, and in through hole
Wall is smooth, soap-free emulsion polymeization gap, fash when eliminating cast molding, improves casting quality.
Further, described step A arranges at the gas port of cylinder head a point core face, exposes cylinder-head port
The space at wall place, it is simple to using airduct cleaning and check, the thickness of airway walls is 9mm, makes cylinder-head port wall
The space at place is the most visible, such that it is able to the gauge situation of visual detection 9mm width airway walls and space
Each position whether clean out, it is to avoid floating sand affects castability.
Further, in described step A, the bottom at core unit is provided with technique sand removing hole, it is simple to cleaning sand
Loose sand in core so that loose sand can be blown out smoothly by airduct.
Further, described technique sand removing hole avoids the position of air flue core, ensures the structural strength of air flue.
Further, carry out blast operation removal surface after described step B medium sand core unit printing shaping and float sand,
Improve surface quality of continuous castings, make cast(ing) surface smooth without sand grains.
Further, described step B carries out after blast completes core baking processing, improves the structure of core
Intensity, and improve casting quality.
Further, after core baking machines in described step B, the surface of core unit is carried out coating
Processing, coating carries out skin drying processing after machining, improve the surface quality of foundry goods, to product contracting material and
Increasing product surface slickness and play good action, the main component of coating is refractoriness height, stability at elevated temperature
Good pulverulent material and binding agent, the most also added with being easy to the carrier that applies and various additament.
Further, described core baking processing and skin drying processing use microwave drying furnace to process, and dry
Dry high efficiency fruit is good, it is ensured that core quality, improves castability, improves production efficiency.
Further, described core coating processing makes coating be attached to core in core unit is immersed in dipping unit
Cell surface, coating cover sand core unit surface and make core unit top layer sand grains invisible, it is ensured that product surface
There is good slickness.
Compared with prior art, the invention has the advantages that:
Traditional split type upper water cavity core design is integral type knot by the casting method of cylinder head of the present invention
Structure, and upper water cavity core Tong Bu with air flue core one print, upper water cavity core and air flue core become one whole
Body, the gap so that upper water cavity core does not bond, fash would not occur when carrying out cast molding, reduce
The cleaning difficulty of foundry goods, has saved clearance time, and the gap that do not bonds also is no need for using binding agent, eliminates
Dry the step of binding agent, the problem that the fire that also would not occur choking in casting process causes foundry goods to be scrapped, decrease sand
Core quantity, can effectively shorten the core assembly working time, improve production efficiency, improve casting quality, greatly
Improve production economy benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of details I in Fig. 1；
Fig. 3 is the polycrystalline substance schematic diagram of Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear,
It is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole realities
Execute example.Based on the embodiment in the present invention, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
The casting method of a kind of cylinder head disclosed in the embodiment of the present invention, makes upper water cavity one-body molded with air flue, eliminates
Bonding gap, binder free thus without baking operation, it is to avoid the fire that occurs in casting process choking causes foundry goods to be scrapped,
Decrease core quantity and the loaded down with trivial details degree of core assembly work, effectively eliminate fash, it is not necessary to cleaning work, reduce work strong,
It is effectively improved production efficiency, increases economic efficiency.
As shown in Figure 1 to Figure 3, the casting method of a kind of cylinder head, print and casting, specifically including modeling, 3D
Procedure of processing includes the following:
A, according to Cylinder head design sand mold, and if sand mold is divided into the core unit of stem portion, soft with drawing
Part designs the threedimensional model of each core unit, and upper water cavity core 1 therein is complete integrative-structure, upper water cavity
Being provided with through hole on core 1, the through-hole wall on upper water cavity core 1 along the circumferential direction closes completely, and through hole
Inner wall smooth, through hole is completely encapsulated in the periphery of air flue core 2, the through-hole wall of upper water cavity core 1 and air flue sand
Having space between core 2, space is being taken up space of cylinder-head port wall, and gap thickness is 9mm, at cylinder
Arranging a point core face at the gas port of lid, the space exposing cylinder-head port wall place is the most visible, according to cylinder head gas
The shape conformal design at road junction, can visual detection the most uniformly reach to the wall thickness dimension of 9mm airway walls at this
It is marked with and whether loose sand is cleaned out in each position, it is ensured that the quality of casting；When dividing core, 3D to be ensured beats simultaneously
Loose sand in the core of print can be cleaned out smoothly, sets in the bottom of core unit for solving the problem of core cleaning
It is equipped with technique sand removing hole 3, and technique sand removing hole 3 avoids air flue position, ensures the structural strength of core；
B, the model file of core unit is imported in 3D printer, beat according to model file in print job case
Printing off each core unit, upper water cavity core 1 one Tong Bu with air flue core 2 prints；
The core unit printed first carries out blast operation removal core surface and floats sand；
Then in core unit is placed into microwave drying furnace, core unit is carried out core baking processing, remove remnants
Moisture, improves the structural strength of core, ensures casting quality；
After core baking machines, core unit is immersed in dipping unit, the surface of core unit is carried out coating
Processing, makes coating be attached to core cell surface, and makes coating have certain thickness, make core unit top layer sand
Grain is invisible, improves the slickness of cast(ing) surface, and core unit is placed into microwave drying furnace after machining by coating
Inside carry out skin drying processing；
C, finally step B is machined obtain each core unit and be combined into one and form complete sand mold, at sand
Type carries out casting and obtains cylinder head.
The present invention uses 3D technology to print core, is combined with air flue core by upper water cavity core and is designed as one during design
Integral sand core, decreases core quantity and core assembly work, stops foundry goods completely in water cavity fash problem at this, and
And do not use binding agent, the problem solving the fire that causes during casting pouring choking because binding agent is not dried.
Below it is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred implementation is not construed as
Limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For this skill
For the those of ordinary skill in art field, without departing from the spirit and scope of the present invention, it is also possible to make some changing
Entering and retouch, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a casting method for cylinder head, prints and casting including modeling, 3D, it is characterised in that specifically add
Work step includes the following: suddenly
A, according to Cylinder head design sand mold, and if sand mold is divided into the core unit of stem portion, soft with drawing
Part designs the threedimensional model of each core unit, and upper water cavity core (1) therein is complete integrative-structure, upper water
It is provided with through hole on chamber core (1), and through hole is completely encapsulated in the periphery of air flue core (2), upper water cavity sand
Having space between through-hole wall and the air flue core (2) of core (1), space is the shared of cylinder-head port wall
Space；
B, the model file of core unit is imported in 3D printer, beat according to model file in print job case
Printing off each core unit, upper water cavity core (1) one Tong Bu with air flue core (2) prints；
C, being combined into one by each core unit forms complete sand mold, carries out casting and obtain cylinder head in sand mold.
The casting method of cylinder head the most according to claim 1, it is characterised in that described upper water cavity core
(1) through-hole wall on along the circumferential direction closes completely, and through-hole wall is smooth.
The casting method of cylinder head the most according to claim 1, it is characterised in that in described step A
A point core face is set at the gas port of cylinder head, exposes the space at cylinder-head port wall place.
The casting method of cylinder head the most according to claim 3, it is characterised in that in described step A
Technique sand removing hole (3) it is provided with in the bottom of core unit.
The casting method of cylinder head the most according to claim 4, it is characterised in that described technique sand removing hole
(3) position of air flue core (2) is avoided.
The casting method of cylinder head the most according to claim 1, it is characterised in that in described step B
Carry out blast operation removal surface after core unit printing shaping and float sand.
The casting method of cylinder head the most according to claim 6, it is characterised in that in described step B
Core baking processing is carried out after blast completes.
The casting method of cylinder head the most according to claim 7, it is characterised in that in described step B
After core baking machines, the surface of core unit being carried out coating processing, coating carries out surface after machining
Dry processing.
The casting method of cylinder head the most according to claim 8, it is characterised in that described core baking adds
Work and skin drying processing use microwave drying furnace to process.
The casting method of cylinder head the most according to claim 8, it is characterised in that described core coating
Processing makes coating be attached to core cell surface, coating cover sand core unit table in core unit is immersed in dipping unit
Face and make core unit top layer sand grains invisible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610392664.6A CN105964939A (en) | 2016-06-02 | 2016-06-02 | Cylinder cover casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610392664.6A CN105964939A (en) | 2016-06-02 | 2016-06-02 | Cylinder cover casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105964939A true CN105964939A (en) | 2016-09-28 |
Family
ID=57010480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610392664.6A Pending CN105964939A (en) | 2016-06-02 | 2016-06-02 | Cylinder cover casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105964939A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311985A (en) * | 2016-09-30 | 2017-01-11 | 宁夏共享模具有限公司 | 3D (three-dimensional) printing sand core |
| CN106475518A (en) * | 2016-09-29 | 2017-03-08 | 宁夏共享模具有限公司 | For casting sand mold and its manufacture method of rotary structure foundry goods |
| CN106670381A (en) * | 2016-11-30 | 2017-05-17 | 宁夏共享模具有限公司 | FDM process based mold core box and manufacturing method thereof |
| CN108213349A (en) * | 2017-10-10 | 2018-06-29 | 中国第汽车股份有限公司 | A kind of method using 3D printing sand core production cylinder cap casting |
| CN109014083A (en) * | 2018-08-27 | 2018-12-18 | 共享智能铸造产业创新中心有限公司 | A kind of filling coating method of Complicated structure casting entirety sand mold |
| CN109807285A (en) * | 2017-11-22 | 2019-05-28 | 于彦奇 | A kind of die cast method |
| CN111659876A (en) * | 2018-01-26 | 2020-09-15 | 共享智能铸造产业创新中心有限公司 | Process method for casting thin-wall aluminum alloy casting at low pressure |
| CN113523196A (en) * | 2021-06-05 | 2021-10-22 | 中国第一汽车股份有限公司 | Sand core structure for 3D printing |
| CN113857435A (en) * | 2021-09-27 | 2021-12-31 | 共享装备股份有限公司 | 3D printing sand core exhaust method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02117743A (en) * | 1988-10-26 | 1990-05-02 | Mazda Motor Corp | Manufacture of core for pressure casting |
| CN103567392A (en) * | 2013-10-12 | 2014-02-12 | 广西玉柴机器股份有限公司 | Manufacturing method for diesel engine cylinder cover |
| CN104416120A (en) * | 2013-08-20 | 2015-03-18 | 于彦奇 | 3D-printing sand core moulding method of large-scale hydraulic turbine blade |
| CN104707939A (en) * | 2015-04-08 | 2015-06-17 | 广西玉柴机器股份有限公司 | Cast sand core for cylinder cover of diesel engine |
| CN204672953U (en) * | 2015-04-02 | 2015-09-30 | 宁夏共享模具有限公司 | Based on the foundry production line that 3D prints |
| CN105127375A (en) * | 2015-10-10 | 2015-12-09 | 四川南车共享铸造有限公司 | Method for machining sand core of intermediate and 3D-printed sand core of intermediate |
| CN205056954U (en) * | 2015-10-10 | 2016-03-02 | 四川南车共享铸造有限公司 | 3D prints psammitolite |
-
2016
- 2016-06-02 CN CN201610392664.6A patent/CN105964939A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02117743A (en) * | 1988-10-26 | 1990-05-02 | Mazda Motor Corp | Manufacture of core for pressure casting |
| CN104416120A (en) * | 2013-08-20 | 2015-03-18 | 于彦奇 | 3D-printing sand core moulding method of large-scale hydraulic turbine blade |
| CN103567392A (en) * | 2013-10-12 | 2014-02-12 | 广西玉柴机器股份有限公司 | Manufacturing method for diesel engine cylinder cover |
| CN204672953U (en) * | 2015-04-02 | 2015-09-30 | 宁夏共享模具有限公司 | Based on the foundry production line that 3D prints |
| CN104707939A (en) * | 2015-04-08 | 2015-06-17 | 广西玉柴机器股份有限公司 | Cast sand core for cylinder cover of diesel engine |
| CN105127375A (en) * | 2015-10-10 | 2015-12-09 | 四川南车共享铸造有限公司 | Method for machining sand core of intermediate and 3D-printed sand core of intermediate |
| CN205056954U (en) * | 2015-10-10 | 2016-03-02 | 四川南车共享铸造有限公司 | 3D prints psammitolite |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475518A (en) * | 2016-09-29 | 2017-03-08 | 宁夏共享模具有限公司 | For casting sand mold and its manufacture method of rotary structure foundry goods |
| CN106475518B (en) * | 2016-09-29 | 2019-02-01 | 共享智能装备有限公司 | For casting the sand mold and its manufacturing method of rotary structure casting |
| CN106311985A (en) * | 2016-09-30 | 2017-01-11 | 宁夏共享模具有限公司 | 3D (three-dimensional) printing sand core |
| CN106670381A (en) * | 2016-11-30 | 2017-05-17 | 宁夏共享模具有限公司 | FDM process based mold core box and manufacturing method thereof |
| CN106670381B (en) * | 2016-11-30 | 2018-07-24 | 宁夏共享模具有限公司 | Mould core box and preparation method thereof based on FDM techniques |
| CN108213349A (en) * | 2017-10-10 | 2018-06-29 | 中国第汽车股份有限公司 | A kind of method using 3D printing sand core production cylinder cap casting |
| CN109807285A (en) * | 2017-11-22 | 2019-05-28 | 于彦奇 | A kind of die cast method |
| CN111659876A (en) * | 2018-01-26 | 2020-09-15 | 共享智能铸造产业创新中心有限公司 | Process method for casting thin-wall aluminum alloy casting at low pressure |
| CN111659876B (en) * | 2018-01-26 | 2022-04-19 | 共享智能铸造产业创新中心有限公司 | Process method for casting thin-wall aluminum alloy casting at low pressure |
| CN109014083A (en) * | 2018-08-27 | 2018-12-18 | 共享智能铸造产业创新中心有限公司 | A kind of filling coating method of Complicated structure casting entirety sand mold |
| CN113523196A (en) * | 2021-06-05 | 2021-10-22 | 中国第一汽车股份有限公司 | Sand core structure for 3D printing |
| CN113857435A (en) * | 2021-09-27 | 2021-12-31 | 共享装备股份有限公司 | 3D printing sand core exhaust method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105964939A (en) | Cylinder cover casting method | |
| CN104707939B (en) | The casting sand core of diesel engine cylinder cover | |
| CN101992268B (en) | Preparation process of high-temperature alloy multigang hollow turbine blade | |
| US7108045B2 (en) | Composite core for use in precision investment casting | |
| CN204486722U (en) | The casting sand core of diesel engine cylinder cover | |
| CN106475518B (en) | For casting the sand mold and its manufacturing method of rotary structure casting | |
| CN107598097A (en) | A kind of wax-pattern combination of turborotor and its fine casting method | |
| CN104493094A (en) | Rapid precise casting technology based on photocuring 3D printing technique | |
| CN110834067B (en) | High-temperature alloy porous seat casting pouring fired mold and fired mold manufacturing process method thereof | |
| CN101628319A (en) | Production method of double-sand mold of resin sand | |
| CN105855468A (en) | Ceramic shell manufacturing method and method for manufacturing ceramic shell of turbine blade | |
| CN103567392A (en) | Manufacturing method for diesel engine cylinder cover | |
| CN103084541A (en) | Forming technology of air cylinder cover casting | |
| CN105880480A (en) | Dry cylinder liner cylinder block body core and assembling method thereof | |
| CN105328129A (en) | Reinforcing method for strength of sand core of 3D printing air cylinder cover | |
| CN102672113A (en) | Method for pouring copper alloy neck mould of glass mould by using single resin sand box | |
| CN103008562A (en) | Vertical casting device for integral cylinder head casting | |
| CN205927013U (en) | A mould for casting valve body | |
| CN104439088A (en) | Manufacturing method of sand leaking preventing and heat preserving feed head of sand casting and special die thereof | |
| CN203875291U (en) | Exhaust manifold casting mold | |
| CN204817932U (en) | Psammitolite of roughing sand calcination | |
| CN112642992B (en) | Process for improving deformation of circular thin-wall investment casting | |
| CN202621848U (en) | Single cylinder B cylinder head swedge cladding sand box | |
| CN202715766U (en) | Core box | |
| CN209830192U (en) | Investment mold of coupler lock for locomotive coupler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |