CN107812917A - A kind of forming method of high-precision main body - Google Patents
A kind of forming method of high-precision main body Download PDFInfo
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- CN107812917A CN107812917A CN201710957181.0A CN201710957181A CN107812917A CN 107812917 A CN107812917 A CN 107812917A CN 201710957181 A CN201710957181 A CN 201710957181A CN 107812917 A CN107812917 A CN 107812917A
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- main body
- sand
- casting
- predetermined temperature
- forming method
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Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005266 casting Methods 0.000 claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 18
- 238000007906 compression Methods 0.000 claims abstract description 18
- 238000010791 quenching Methods 0.000 claims abstract description 8
- 230000000171 quenching effect Effects 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 48
- 239000004576 sand Substances 0.000 claims description 33
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 11
- 239000005011 phenolic resin Substances 0.000 claims description 11
- 229920001568 phenolic resin Polymers 0.000 claims description 11
- 229920001169 thermoplastic Polymers 0.000 claims description 10
- 239000004416 thermosoftening plastic Substances 0.000 claims description 10
- 244000035744 Hura crepitans Species 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 150000002118 epoxides Chemical class 0.000 claims description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- 229920000768 polyamine Polymers 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 3
- 235000010234 sodium benzoate Nutrition 0.000 claims description 3
- 239000004299 sodium benzoate Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 2
- 239000013039 cover film Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention refers in particular to the forming method of high-precision main body, spiral camber is provided with main body, fixed via is provided with left and right sides of the spiral camber, lifting fixing threaded hole is provided with left and right sides of the main body, fixing supporting legs are provided with the downside of the main body, compression inner chamber is provided with the inside of the main body, lightening recesses are provided with the downside of the compression inner chamber.Casting is slowly heated to the first predetermined temperature after unpacking in processing, is incubated 6 hours, then slowly cools to the second predetermined temperature, then is heated to immerse in quenching medium after the 3rd predetermined temperature by casting and cools down, the solution have the advantages that：The device is provided with high-precision discharge chambe and rotating shaft room, and coordinate the multiple heating technical method of its composite forming method to improve the precision during manufacturing, and increase rotates the configuration that position is made in structure, and some positions are simplified, so as to improve the accuracy of whole main body, it is more convenient to use, improve the operating efficiency and stability of equipment.
Description
Technical field
The application, which is related to, belongs to Compressor Technology field, refers in particular to a kind of forming method of high-precision main body.
Background technology
Compressor is that we live and are frequently necessary to the device used in production, and main effect is for gas or liquid
Body is compressed, so as to by changing pressure, change the state of gas or liquid, conveniently carry out in some special cases
Use.
Because compressor is to need to be used under high speed and high pressure state, therefore the manufacture needs to compressor are very smart
It is close, the efficient normal operating of compressor could be effectively realized by the cooperation of each machine parts'precise, and focusing on compressor
While machine parts'precise, also to pay attention to for the precision of the main body of compressor, traditional main body is mostly relatively rough,
Some structures are more complicated, easily occur pressure leakages during use, easily damaged, and increase the situation of energy consumption, no
It can be good at meeting at this stage for the various exclusive requirements of main body, to this, we need to reform prior art.
In terms of its forming method, common conventional cast mode has：1）Moulding is carried out with metal pattern or wooden model, but there is
Energy consumption is big, burning into sand, slag inclusion, stomata, it is loose the defects of it is more；2）With resin sand coremaking/shell, or core resin sand, shell metal
Model sand mold is done, but resin sand core cost is high, and stomata, rarefaction defect still can not solve effectively；3）Using evaporative pattern method, but
Special equipment price used in method is high, easily produces shrinkage cavity.4）With hot method precoated sand come coremaking, but application is covered in the prior art
Film sand mould casting is applied in terms of gravitational casting mostly, or is only that precoated sand core shooting is formed into simple loam core to be applied to
Other castings.And for large complicated main body body casting, being cast using gravity precoated sand, casting solidifies under gravity, by
Pressure it is smaller, easily produce shrinkage porosite, shrinkage cavity the defects of, low pressure casting must be brushed to die cavity to prevent scab again, painting
Brush less efficient, be also easy to produce brush mark, influence surface quality.
It can be seen that not only main body machine structure will meet engine request, also need to ensure the matter of body casting by method and measure
Amount, and conventional method method is difficult to meet to require.
The content of the invention
The application is high for the deficiency of main body machine mechanical strength present in prior art, required precision, and forming method
The technical problem of good body casting quality can not be realized, there is provided a kind of forming method of high-precision main body, ensure body
Mitigate weight while mechanical strength and improve precision, realize the structure design of simple and compact, and it is clear to be molded body configuration,
The uniformity of Mass accuracy is high.
In order to solve the above technical problems, technical scheme is used by the application：
A kind of forming method of high-precision main body, it is characterised in that main body includes main body（1）, spiral camber（2）, it is fixed
Through hole（3）, exhaust outlet（4）, be tightly connected flange（5）, lifting fixing threaded hole（6）, fixing supporting legs（7）, compression inner chamber（8）、
Lightening recesses（9）, lubricant circulating slot（10）, air inlet duct（11）, line shaft mounting groove（12）, bar shaped support（13）Connect with fixed
Acting flange（14）, the main body（1）It is provided with spiral camber（2）, the spiral camber（2）The left and right sides is provided with fixed via
（3）, the spiral camber（2）Upside is provided with exhaust outlet（4）, the exhaust outlet（4）Outside, which is provided with, is tightly connected flange（5）, institute
State main body（1）The left and right sides is provided with lifting fixing threaded hole（6）, the main body（1）Downside is provided with fixing supporting legs（7）, the master
Body（1）Inner side is provided with compression inner chamber（8）, the compression inner chamber（8）Downside is provided with lightening recesses（9）, the main body（1）On be located at
Lightening recesses（9）The reverse side of correspondence position is provided with lubricant circulating slot（10）, the lightening recesses（9）Downside is provided with air inlet duct
（11）, the air inlet duct（11）It is interior to be provided with line shaft mounting groove（12）, it is described enter line shaft mounting groove（12）Downside is provided with bar shaped
Support（13）, main body（1）Front and rear frame is provided with and is fixedly connected with flange（14）, the spiral camber（2）Inner chamber is smooth and edge
It is full symmetric axis,
Its forming step is as follows：
1) chill and core are made；
2) precoated sand sand lump is manufactured：By step 1）In the chill made be placed in the mould of precoated sand core shooting sand lump, precoated sand
Injection forms precoated sand sand lump under high pressure；
3) moulding：Precoated sand sand lump is embedded on cast model, the sand lump is spliced to form precoated sand sand lump external mold, in external mold
The shape of layer matches with the shape of the cast model of the main body；Sandbox is covered, sandbox and precoated sand are filled using metal sand
Space between sand lump external mold, sandbox and precoated sand sand lump external mold are connected together；The upper half mould of casting die cavity is formed after molding
Or lower half mould；
4) core under：The core made is put into the lower half mould of the casting die cavity；
5) mould assembling：By the lower half mould after lower core and upper half mould mould assembling, the casting mold of main body is formed；
6) poured into a mould under low pressure；
7) unpacking and sand removal, obtains main body casting；
8) casting is heat-treated.
As preferable：The heat treatment is that casting is slowly heated into the first predetermined temperature after unpacking, and insulation 6 is small
When, then the second predetermined temperature is slowly cooled to, then be heated to immerse in quenching medium after the 3rd predetermined temperature by casting and cool down.
As preferable：First predetermined temperature is 750-800 DEG C, and second predetermined temperature is 500-600 DEG C, institute
The 3rd predetermined temperature is stated as 900-950 DEG C.
As preferable：The quenching medium main component includes：Sodium chloride, potassium chloride, high molecular polyether, sodium benzoate and
Organic silicon modified by polyether.
As preferable：The precoated sand includes 110-120 mesh quartz sand and 90-100 mesh quartz sands, in addition to thermoplasticity
Phenolic resin, epoxides addition polyamines and stearate；Wherein, the content of thermoplastic phenolic resin accounts for quartz sand total amount
3.5-4wt%, the content of epoxides addition polyamines account for the 12-14wt% of thermoplastic phenolic resin, and the content of stearate accounts for
The 13-14wt% of thermoplastic phenolic resin.
The application has the advantages that：The device is provided with high-precision discharge chambe and rotating shaft room, is produced by improving
Precision in manufacturing process, and increase rotates the configuration that position is made in structure, and some positions are simplified, so as to
The accuracy of whole main body is improved, it is more convenient to use, the operating efficiency and stability of equipment are improved, as a result of above-mentioned
The forming method of compound type so that main body machine is clear-cut, improves its machining accuracy, avoids common casting mold defect,
Realize the quality conformance of main body machine internal-external improvement.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the embodiment of the present application, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments described in the application,
For those of ordinary skill in the art, without having to pay creative labor, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the lateral side view of the present invention.
In figure：1st, main body, 2, spiral camber, 3, fixed via, 4, exhaust outlet, 5, be tightly connected flange, 6, lifting fixes
Screw, 7, fixing supporting legs, 8, compression inner chamber, 9, lightening recesses, 10, lubricant circulating slot, 11, air inlet duct, 12, line shaft peace
Tankage, 13, bar shaped support, 14, be fixedly connected with flange.
Embodiment
The embodiment of the present application provides a kind of main body machine and its composite forming method.
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.It is common based on the embodiment in the application, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, it should all belong to the application protection
Scope.
In order to ensure cast(ing) surface machining accuracy and efficient production operation, set casting die cavity using precoated sand core shooting into
Type, core use resin sand, low pressure casting.The forming method of the main body machine of the present embodiment, it is a kind of composite forming method, reference
Fig. 1-3, including main body 1, spiral camber 2, fixed via 3, exhaust outlet 4, sealed connection flange 5, lifting fixing threaded hole 6, fixation
Supporting leg 7, compression inner chamber 8, lightening recesses 9, lubricant circulating slot 10, air inlet duct 11, line shaft mounting groove 12, bar shaped support 13
Be fixedly connected with flange 14, the main body 1 is provided with spiral camber 2, and the inner chamber of the spiral camber 2 is smooth and along axis
It is full symmetric, the internal formula that is compressed to gas can be allowed more smooth, increase compression efficiency, the spiral camber 2 or so two
Side is provided with fixed via 3, and the upside of spiral camber 2 is provided with exhaust outlet 4, and the outside of exhaust outlet 4, which is provided with, is tightly connected flange
5, the left and right sides of main body 1 is provided with lifting fixing threaded hole 6, and the downside of main body 1 is provided with fixing supporting legs 7, the fixed branch
Support leg 7 is provided with positioning hole, it is ensured that the stability fixed to the present apparatus, the inner side of main body 1 are provided with compression inner chamber 8, institute
State the downside of compression inner chamber 8 and be provided with lightening recesses 9, the reverse side that the correspondence position of lightening recesses 9 is located in the main body 1 is provided with lubricant
Circulating slot 10, the downside of lightening recesses 9 is provided with air inlet duct 11, line shaft mounting groove 12 is provided with the air inlet duct 11, described
The part that line shaft mounting groove 12 is located at rear end is provided with fixed cotter way, it is ensured that the fixation for line shaft, not only facilitates but also can
Lean on, it is described enter the downside of line shaft mounting groove 12 be provided with bar shaped support 13, frame is provided with being fixedly connected with flange 14 before and after main body 1.
When in use, compression flabellum and compressional axis are arranged in compression inner chamber 8, and line shaft is arranged on line shaft mounting groove 12
It is interior, then each position is sealed, the present apparatus is fixed up using fixing supporting legs 7 when in use, then by power
Axle rotates, and drives the compression flabellum in compression inner chamber 8 to be operated, under the air guide effect of the inner chamber of spiral camber 2 to gas or
Person's liquid is compressed, and then by being excluded at exhaust outlet 4, wherein line shaft mounting groove 12 is made by the bar shaped support frame 13 of hollow out
Into gas or liquid are entered by air inlet duct 11, while the part Jing Guo hollow out enters, and increase feed rate, this device knot
Structure is close, makes the efficiency for finely, greatly improving compression work, while in order to further ensure the processing of its product essence
Degree.The present invention is molded by compound forming method, and it is comprised the following steps that：
1) chill and core are made；
2) precoated sand sand lump is manufactured：By step 1）In the chill made be placed in the mould of precoated sand core shooting sand lump, precoated sand
Injection forms precoated sand sand lump under high pressure, wherein, the temperature control of mould is in 200-230 degree；Precoated sand includes 110-120 mesh
Quartz sand and 90-100 mesh quartz sands, and thermoplastic phenolic resin, epoxides addition polyamines and stearate；Wherein, it is hot
The content of plastic phenolic resin accounts for the 3.5-4wt% of quartz sand total amount, and the content of epoxides addition polyamines accounts for thermoplastic phenolic
The 12-14wt% of resin, the content of stearate account for the 13-14wt% of thermoplastic phenolic resin；The composition composition of precoated sand makes
The intensity and surface quality for obtaining precoated sand are improved, and are favorably improved the profile definition of casting, and use small volume
Sand lump, coating coating is carried out using dip coating manner, avoids unnecessary vestige, and coating time can be shortened.
3) moulding：Precoated sand sand lump is embedded on cast model, sand lump is spliced to form precoated sand sand lump external mold, its internal layer
Shape matched with the shape of the cast model of main body machine；Sandbox is covered, is filled using metal sand outside sandbox and precoated sand sand lump
Space between mould, so as to which sandbox and precoated sand sand lump external mold be connected together；After molding formed casting die cavity upper half mould or under
Half mould；
4) core under：The core made is put into the lower half mould of casting die cavity；
5) mould assembling：By the lower half mould after lower core and upper half mould mould assembling, the casting mold of formation main body machine；
6) poured into a mould under low pressure, wherein it is 8s, pressure 0.3MPa, filling time 25s to rise the liquid time, pressure is
0.4MPa, investing time 130s, pressure 0.4MPa, pressurization time 22s, pressure 0.6MPa, dwell time 700s,
Pressure is 0.6MPa, and the release time is 20s, pressure 0；
7) unpacking and sand removal, obtains main body machine casting；
8) casting is heat-treated, heat treatment method is that casting is slowly heated into 750-800 DEG C after unpacking, and insulation 6 is small
When, then 500-600 DEG C is slowly cooled to, immerse in quenching medium and cool down after casting then is heated into 900-950 DEG C.Wherein, quench
Fiery agent main component includes：Sodium chloride, potassium chloride, high molecular polyether, sodium benzoate, organic silicon modified by polyether are former by quenching medium
Liquid is diluted with water to the solution of certain percentage concentration, controls the temperature of dilute solution to be required according to heat treatment method in room temperature
Casting is heated to predetermined temperature, is directly immersed in dilute solution and is cooled down.
Embodiments herein is the foregoing is only, is not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.All any modifications made within spirit herein and principle, it is equal
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (5)
1. a kind of forming method of high-precision main body, it is characterised in that main body includes main body（1）, spiral camber（2）, it is solid
Determine through hole（3）, exhaust outlet（4）, be tightly connected flange（5）, lifting fixing threaded hole（6）, fixing supporting legs（7）, compression inner chamber
（8）, lightening recesses（9）, lubricant circulating slot（10）, air inlet duct（11）, line shaft mounting groove（12）, bar shaped support（13）With it is solid
Determine adpting flange（14）, the main body（1）It is provided with spiral camber（2）, the spiral camber（2）The left and right sides is provided with fixed logical
Hole（3）, the spiral camber（2）Upside is provided with exhaust outlet（4）, the exhaust outlet（4）Outside, which is provided with, is tightly connected flange（5）,
The main body（1）The left and right sides is provided with lifting fixing threaded hole（6）, the main body（1）Downside is provided with fixing supporting legs（7）, it is described
Main body（1）Inner side is provided with compression inner chamber（8）, the compression inner chamber（8）Downside is provided with lightening recesses（9）, the main body（1）It is upper
In lightening recesses（9）The reverse side of correspondence position is provided with lubricant circulating slot（10）, the lightening recesses（9）Downside is provided with air inlet duct
（11）, the air inlet duct（11）It is interior to be provided with line shaft mounting groove（12）, it is described enter line shaft mounting groove（12）Downside is provided with bar shaped
Support（13）, main body（1）Front and rear frame is provided with and is fixedly connected with flange（14）, the spiral camber（2）Inner chamber is smooth and edge
It is full symmetric axis,
Its forming step is as follows：
1) chill and core are made；
2) precoated sand sand lump is manufactured：By step 1）In the chill made be placed in the mould of precoated sand core shooting sand lump, precoated sand
Injection forms precoated sand sand lump under high pressure；
3) moulding：Precoated sand sand lump is embedded on cast model, the sand lump is spliced to form precoated sand sand lump external mold, in external mold
The shape of layer matches with the shape of the cast model of the main body；Sandbox is covered, sandbox and precoated sand are filled using metal sand
Space between sand lump external mold, sandbox and precoated sand sand lump external mold are connected together；The upper half mould of casting die cavity is formed after molding
Or lower half mould；
4) core under：The core made is put into the lower half mould of the casting die cavity；
5) mould assembling：By the lower half mould after lower core and upper half mould mould assembling, the casting mold of main body is formed；
6) poured into a mould under low pressure；
7) unpacking and sand removal, obtains main body casting；
8) casting is heat-treated.
2. the forming method of high-precision main body according to claim 1, it is characterised in that the heat treatment is to unpack
Casting is slowly heated to the first predetermined temperature afterwards, is incubated 6 hours, then slowly cools to the second predetermined temperature, then by casting
It is heated to immerse in quenching medium after the 3rd predetermined temperature and cools down.
3. the forming method of high-precision main body according to claim 2, it is characterised in that first predetermined temperature is
750-800 DEG C, second predetermined temperature is 500-600 DEG C, and the 3rd predetermined temperature is 900-950 DEG C.
4. the forming method of the main body according to Claims 2 or 3, it is characterised in that the quenching medium main component bag
Include：Sodium chloride, potassium chloride, high molecular polyether, sodium benzoate and organic silicon modified by polyether.
5. the forming method of the high-precision main body according to any one in claim 1-4, it is characterised in that described to cover
Film sand includes 110-120 mesh quartz sand and 90-100 mesh quartz sands, in addition to thermoplastic phenolic resin, epoxides addition polyamines
And stearate；Wherein, the content of thermoplastic phenolic resin accounts for the 3.5-4wt% of quartz sand total amount, epoxides addition polyamines
Content account for the 12-14wt% of thermoplastic phenolic resin, the content of stearate accounts for the 13-14wt% of thermoplastic phenolic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710957181.0A CN107812917B (en) | 2017-10-16 | 2017-10-16 | A kind of forming method of high-precision main body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710957181.0A CN107812917B (en) | 2017-10-16 | 2017-10-16 | A kind of forming method of high-precision main body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107812917A true CN107812917A (en) | 2018-03-20 |
| CN107812917B CN107812917B (en) | 2019-06-28 |
Family
ID=61608278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710957181.0A Active CN107812917B (en) | 2017-10-16 | 2017-10-16 | A kind of forming method of high-precision main body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107812917B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014617A (en) * | 2019-12-13 | 2020-04-17 | 西安航天发动机有限公司 | Forming method of thin-wall volute casing with spiral structure based on antigravity casting |
Citations (5)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111014617A (en) * | 2019-12-13 | 2020-04-17 | 西安航天发动机有限公司 | Forming method of thin-wall volute casing with spiral structure based on antigravity casting |
| CN111014617B (en) * | 2019-12-13 | 2021-08-06 | 西安航天发动机有限公司 | Forming method of thin-wall volute casing with spiral structure based on antigravity casting |
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| CN107812917B (en) | 2019-06-28 |
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