CN109175235A - A kind of fixing means of mud core and the casting method of cabinet, multi-cavity road casting - Google Patents
A kind of fixing means of mud core and the casting method of cabinet, multi-cavity road casting Download PDFInfo
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- CN109175235A CN109175235A CN201810748347.2A CN201810748347A CN109175235A CN 109175235 A CN109175235 A CN 109175235A CN 201810748347 A CN201810748347 A CN 201810748347A CN 109175235 A CN109175235 A CN 109175235A
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- 238000005266 casting Methods 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000000465 moulding Methods 0.000 claims abstract description 23
- 244000035744 Hura crepitans Species 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims description 63
- 229920005989 resin Polymers 0.000 claims description 42
- 239000011347 resin Substances 0.000 claims description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 230000001680 brushing effect Effects 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 235000013339 cereals Nutrition 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000007596 consolidation process Methods 0.000 claims description 9
- 239000011819 refractory material Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 229910052845 zircon Inorganic materials 0.000 claims description 6
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 4
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000008521 reorganization Effects 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000000246 remedial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000003350 kerosene Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910001047 Hard ferrite Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009400 out breeding Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000005808 skin problem Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B22C9/103—Multipart cores
-
- 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
- B22C9/108—Installation of cores
-
- 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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses the casting methods of a kind of fixing means of mud core and cabinet, multi-cavity road casting, and the quick fixing means of different dimensions mud core and casting mold, mud core and mud core and casting mold and casting mold may be implemented；It is the fixation of isolated mud core, multistage mud core；The connection type of fixing tool is optional there are many being, such as embedded part method, boring method.The invention avoids using the mode of the fixed mud core of stud to cause core floatation, runout problem, avoids the problem that leaking caused by because of stud use, avoid the reparation of stud part leakage, reduce casting cost；It solves the problems, such as that mud core laminates dimensional discrepancy caused by fixed form or even wears skin, improves the dimensional accuracy of intricate casting, improve the sealing performance of intricate casting；The runout of the casting caused by sandbox and casting mold poor adhesive force problem is provided with remedial measure during case, is reduced casting runout and is scrapped a possibility that causing, also saves moulding cost.
Description
Technical field
The present invention relates to casting preparation technical field, in particular to the fixing means and cabinet, multi-cavity road of a kind of mud core
The casting method of casting.
Background technique
One country's equipment industry level and its entire industrial state synchronized, casting is in all equipment components blanks institute accounting
Example is more than the sum of blanks such as Forgingother, welding.It is cast in production and developing history that China there are 2 over thousands of years, from the casting of early stage
The casting of the simple cast irons parts such as the coloured part such as ancient cooking vessel, ploughshare, it is miscellaneous applied to shipbuilding, aviation, weapons, core work to modern times
The casting of the various black, coloured part in the fields such as industry, although the diversity of casting technique, method, material, casting comprehensive performance refer to
Mark has very big abundant and promotion, but forms the casting mold of casting, mud core fixed form and never have big variation over the past thousands of years,
Foundry Production is still carried out by lock box, pressure core mode.
It is with the development of the chemical industry, traditional viscous using bentonite as the wet type of binder or dry type over nearly twenty or thirty year
The Foundry Production mode of soil sand is gradually by using various organic chemistry binders as resin sand (phenolic resin, furans tree of additive
Rouge etc.) carry out moulding, coremaking production mode substitute.The cold box resin sand Foundry Production mode being most widely used is from previous generation
Discipline end introduces China from west, is existed rapidly with the advantages that its core strength height, uniform intensity distribution, easy to operate and its high efficiency
Domestic casting industry is popularized, and the black casting in present China about 80% or more is all made of the mode of phenolic sand molding coremaking
It is produced.
Upper and lower casting mold generally still uses clamp or bolt lock tight sand case in existing cold box resin sand casting process,
Upper and lower type is tightened together with the adhesive force of upper and lower type resin sand by sandbox.Core print is generally arranged in mud core, passes through mo(u)ld top half
Core print or mud core are fixed on mo(u)ld bottom half preset position, the casting so that the inside and outside shape and size of acquisition meet the requirements.
Inside and outside shape and size are all formed by mud core more complicated casting (such as diesel-engine body, cylinder cap,
Cabinet, shell etc.), outside mud core is generally then filled with resin sand by being inserted in sandbox when moulding, fixed outer after resin sand hardening
Portion's mud core.Internal mud core is generally fixed by successively laminating mode.The mud core of certain multi-panel iron liquids cladding is then passed through
Mud core and casting mold are adhered to each other using binder, or carries out mud core using the mode for being embedded in metal stud and fixes.
Traditional type core fixed form most cases can satisfy production requirement, but high for some dimension precision requirements,
There are pressure or leakage to require and exist the casting of the particular/special requirements such as especially thick big position, traditional core fixed form exposes more next
It is more insufficient and inconvenient.These of traditional fixed form production have the casting of particular/special requirement, and it is super often to will appear leakage, size
Also often there is the defects of casting wears skin, runout in difference, low density and other issues in production practices.
Traditional type core fixed form tends not to meet normal production requirement to certain special casting, rejection rate often compared with
It is high.
1. the closed cabinet class casting of multi-panel
As shown in Figure 1, certain thick big cabinet is the box casting of five face closure one side opens, which will bear alternation
Stress, it is desirable that higher.Since cabinet domestic demand stores certain lubrication oil medium, there is seal request, which will carry out seeping kerosene examination
It tests, it is desirable that inside leaching coal 12 hours there is not allowed that leakage.In technique downwards by axle bed, shape is formed by drag, inner cavity by
Two mud cores are formed.Five face of mud core due to forming inner cavity is coated by iron liquid, and mud core is in buoyancy float downward in order to prevent, and one
As be to place a certain number of studs between mud core upper surface and mo(u)ld top half (as shown in Figure 2) is fixed to mud core.It is producing
Often will appear in the process stud melted by molten iron, stud positional shift, the case where mud core floats up, casting is caused to scrap.
Sometimes also there is stud dimension overproof and cause not locking between upper and lower type there are gap after mould assembling to cause to run away, cause casting report
Useless situation.For the casting of production when subsequent friendship inspection carries out infiltration kerosine test, majority has kerosene exudation at stud position, causes to return
It repairs seepage place and spends biggish human and material resources.
2. complex-shaped multi-cavity road casting
Fig. 3 is certain diesel engine trestle component, and the part size is big (overall size is 2500 × 1200 × 1000mm), external shape
Shape is irregular, and internal passage is more (there are 7 chambers, 2 two-way pipelines, 1 three-way pipeline, 1 four-way pipeline in inside), casting wall
Thick difference is big, minimum wall thickness (MINI W.) 10mm, thickest 210mm.Since the bracket bears the pressure of 1.5MW, so casting leakproofness, cause
Close property is more demanding, also needs to carry out ultrasound detection and the water pressure test.
As shown in figure 4, having carried out the segmentation of mud core to internal seven cavities and outer shape in technique, formed by mud core
The main inside and outside shape of the casting.The casting mud core is divided into seven layers, mud core quantity totally 22.Each layer mud core is by laminating when production
Mode be fixed, i.e., second layer mud core is pressed on first layer mud core, and third is laminated on the second layer, and so on, it is most upper
Layer mud core and isolated mud core are fixed by stud.
This bracket more problems for laminating the production of mud core fixed form, especially geomery deviation are larger.Portioned product
Dimension discrepancy is serious after casting, causes casting to wear skin and scraps, as shown in Figure 5.Part casting occurs in the subsequent water pressure test
Leakage, pressure declines quickly when showing as the examination of oil duct cavity water.Since seepage place majority is between inner chamber and chamber, generally
Its leak location can not be visually inspected out, so repairing treatment can not be carried out to seepage place and casting is caused to scrap.
Therefore, it is necessary to the fixing means of the completely new mud core of one kind and the casting method of cabinet, multi-cavity road casting are provided,
Solve above-mentioned defect existing in the prior art.
Summary of the invention
In order to solve the above technical problems, the present invention provides the fixing means and cabinet, multi-cavity road casting of a kind of mud core
Casting method.
The present invention provides a kind of fixing means of mud core and the casting method of cabinet, multi-cavity road casting, using following skill
Art scheme:
A kind of fixing means of mud core is placed in pre-buried channel in mud core corresponding position, when matching case with pull rod by burying in casting mold
Part connect and fastens with mud core.
A kind of casting method of box casting, comprising the following steps:
S1: merging built-in fitting 2；
Away from placing embedded parts 2, bearing block centre placing embedded parts 2 at edge 150mm on model 1；
S2: merging sandbox 3；
Sandbox 3 is tipped upside down on model 1, filling resin sand 4 and consolidation, molding after hardening 1-2 hours, after repairing type, swabbing 5 to
With to obtain casting mold A；
S3: production No. 1 sand core, No. 2 sand cores are placed in pre-buried channel；
Away from 2 step-like pre-buried channels for placing φ 60- φ 80 at edge 150mm in No.1 core box 6, in No. 28 bearings of core box
The pre-buried channel of the seat 1 φ 60- φ 80 in center, inserts resin sand 4；Molding after hardening 1-2 hours, after core finishing, swabbing 5
For use；
S4: match case；
No. 1 sand core, No. 2 sand cores place 12-24 and as a child carry out operating with case；
S5: connection fastening；
Connecting rod 12 is fixedly connected by reserved channel with the built-in fitting 2 in casting A respectively from top to bottom；
S6: molding；
It inserts at resin sand 4 to step in pre-buried channel, is locked after being put into gasket 14 with double nut 15；It is covered on nut
It is filled and led up after heat-barrier material 16 with resin sand 4；Brushing fire resisting zircon flour coating 11 3 times after resin sand hardening 10-20 minutes, first
All over Baume degrees control in 60~65 ° of Be, in 70~75 ° of Be, third is controlled all over Baume degrees at 40~60 ° for second time Baume degrees control
Be；Being subsequently placed with 4-6 as a child can be used.
Preferably, in S1, depth > 100mm of the built-in fitting 2 in casting mold A.
Preferably, in S3, the pre-buried channel is hollow pipeline 7.
Preferably, in S4, described with case, steps are as follows:
A. casting mold A is placed and matches case place, and check whether casting mold is horizontal, cleans out coremaking, mud core with horizontal ruler；
B. it is put into No. 2 mud cores in casting mold A, checks its size positions, and cleans out type chamber；
C. it is put into No. 1 mud core on No. 2 mud cores in casting mold A, checks No. 1 mud core size, position.
Preferably, in S5, connecting rod 12 is reserved logical by what is reserved in No. 1 mud core, No. 2 mud cores respectively from top to bottom
Road-hollow pipeline 7, and be fixedly connected with the built-in fitting 2 in casting mold A.
Preferably, the mode being fixedly connected is hook and hook or screw rod and nut or the side such as T-bar and T-slot
Formula.
A kind of casting method of multi-cavity road casting, comprising the following steps:
S1: the production upper and lower type of casting mold；
It makes casting mold mo(u)ld top half: after checking that mold shape size is errorless, cleaning out die surface, brushing release agent three times, every time
Interval 5-10 minutes；Sandbox is put into predetermined position after release agent is dry；In model surface filling resin sand and consolidation；
Casting mold hardening after test with 4 inch iron nails to its hardness, when iron nail around sandbox with top surface cannot be inserted into when into
Modulo operation is gone；Casting mold after molding need to carry out geomery inspection, carry out surface rest and reorganization after geomery is errorless；It cleans out
Brushing paint after mo(U)ld face, coating are alcohol zircon flour coating, are brushed three times, and first pass Baume degrees is controlled in 60~65 ° of Be, the
In 70~75 ° of Be, third is controlled all over Baume degrees in 40~60 ° of Be for two times Baume degrees control；
Casting mold mo(u)ld bottom half: operation is same as above；
S2: production mud core；
Resin sand, arbor and consolidation, molding, core finishing after hardening are successively filled out in core box；Brushing paint operates same S1；By mud core
It is dried in drying kiln, drying temperature is 160-220 DEG C, and soaking time is 1-3 hours；
S3: it is operated with case；
The drying of mud core, casting mold placement carry out operating with case for 24 hours afterwards；Casting mold is placed on work-yard, with level meter in different directions
It is checked, adjustment casting mold die joint to horizontal position；Check casting mold and each mud core working region without piling, core head
Position no concave-convex is uneven；
Then lower core, pre-buried channel is successively drilled out on needing fixed mud core, sand grains in hole is sucked out, then knocks in embedded part, will
Embedded part is fixedly connected with mud core group；
S4: mould assembling；
Check that each mud core position dimension of upper and lower type is errorless and type chamber completely after mould assembling；
S5: mould drying；
By down gate to casting mold blowing hot-air, at 160-220 DEG C, the time is 6-8 hours for hot blast temperature control, pays attention to measuring temperature
Position is under the venthole farthest apart from down gate at 150-200mm.
In S3, the sequence of the lower core are as follows:
(a) it is put into No. 1 mud core and No. 4 in lower mold bottommost, checks that mud core size positions are accurate；
(b) in left side it is sequentially placed into No. 2 mud cores, No. 3 mud cores, No. 7 mud cores, No. 8 four floor mud core of mud core from bottom to top；
(c) it is sequentially placed into two layers of mud core of No. 5 mud cores and No. 6 mud cores from bottom to top on right side；
(d) left side third layer ecto-entad successively No. 13 mud cores of tripping in, No. 10；
(e) right side third layer ecto-entad successively No. 14 mud cores of tripping in, No. 11 mud cores, No. 12；
(f) No. 15 mud cores of middle part tripping in, No. 16 mud cores, No. 19；
(g) right side top layer tripping in 20；
(h) middle part top layer tripping in 19；
(i) in No. 21 mud cores of upper mold tripping in, No. 22.
In S3, mud core fix the following steps are included:
(1) fixation of mud core group 1: mud core group 1 includes No. 2 mud cores, No. 3 mud cores, No. 7 mud cores；
No. 2 mud cores, No. 3 mud cores, No. 7 mud cores are fixed after lower core step (b)；It is specific as follows:
After checking that No. 2 mud cores, No. 3 mud cores, No. 7 mud core sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is bored on core 7, it should
Hole sequentially passes through No. 7 mud cores, No. 3 mud cores, No. 2 mud cores from top to bottom and enters lower mold；Stepped hole step depth 60mm enters
Lower mold depth 80-100mm；
Sand grains in hole is sucked out；
Component I is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, fire proofed wood is put on nut
Resin sand, brushing fireproof coating after hardening 10-20 minutes are inserted after material；
(2) fixation of mud core group 2: mud core group 2 includes No. 19 mud cores, No. 13 mud cores, No. 10 mud cores；
No. 19 mud cores, No. 13 mud cores, No. 10 are fixed after lower core step (e)；It is specific as follows:
After checking that No. 19 mud cores, No. 13 mud cores, No. 10 sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is above bored at No. 19,
This successively hole pass through No. 19 mud cores, No. 13 mud cores, No. 10 and enter lower mold；Stepped hole step depth 60mm, into lower mold
Depth 80-100mm；
Sand grains in hole is sucked out；
Component II is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(3) fixation of mud core group 3: mud core group 3 includes No. 14 mud cores, No. 12 mud cores, No. 6；
No. 14 mud cores, No. 12 mud cores, No. 6 are fixed after lower core step (e)；It is specific as follows:
After checking that No. 14 mud cores, No. 12 mud cores, No. 6 sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is above bored at No. 14,
This successively hole pass through No. 14 mud cores, No. 12 mud cores, No. 6 and enter lower mold；Stepped hole step depth 60mm, into lower mold
Depth 80-100mm；
Sand grains in hole is sucked out；
Component III is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(4) fixation of mud core group 4: mud core group 4 includes No. 15 mud cores of middle part mud core, No. 4 mud cores, No. 1 mud core；
Lower core step (h) " after No. 15 mud cores, No. 4 mud cores, No. 1 are fixed；It is specific as follows:
It, should in 1 30/ φ of φ, 12 stepped hole of No. 15 upper brills after checking that No. 15 mud cores, No. 4 mud cores, No. 1 size, position are accurate
Successively hole pass through No. 15 mud cores, No. 4 mud cores, No. 1 and enter lower mold；Stepped hole step depth 60mm, into lower mold depth
80-100mm；
Sand grains in hole is sucked out；
Component IV is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(5) mo(u)ld top half mud core is fixed:
After checking that No. 21 mud cores, No. 22 sizes, positions are accurate, respectively in 1 No. 21 mud cores, No. 22 upper brills 30/ φ of φ 12
Rank hole, the difference hole pass through No. 21 mud cores, No. 22 and enter upper mold；Stepped hole step depth 60mm, into lower mold depth
80-100mm；
Sand grains in hole is sucked out；
Component V is knocked in respectively in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, is put into fire proofed wood
Resin sand, brushing fireproof coating after hardening 10-20 minutes are inserted after material.
Compared with the relevant technologies, the present invention is had the following technical effect that
1, the invention avoids the modes for using stud to fix mud core to cause core floatation, runout problem, caused by avoiding because of stud use
The problem of leakage, avoids the reparation of stud part leakage, reduces casting cost.
2, the mud of being solved core of the invention laminates dimensional discrepancy caused by fixed form or even wears skin problem, improves multiple
The dimensional accuracy of miscellaneous casting improves the sealing performance of intricate casting.
3, the present invention institute runout of the casting caused by sandbox and casting mold poor adhesive force problem is provided remedies in the process with case
Measure reduces casting runout and scraps a possibility that causing, also saves moulding cost.
4, the present invention is locked or is squeezed to casting privileged site, can make full use of spheroidal graphite cast-iron from feeding, improve
The compactness of casting.Than generally casting passive feeding, the shrinkage defect problem that feeding deficiency is formed provides resolving ideas.
5, the present invention can realize various dimensions, accessible locking to removable-flask mouldings modes such as cored-up mould, folded core sand mouldings, convenient
Fast.
6, the present invention more can guarantee it with case and casting the fixed form of isolated mud core, cantilever mud core, elongated mud core
Positions and dimensions precision in the process.
Detailed description of the invention
Fig. 1 is the closed box casting structural schematic diagram of prior art multi-panel；
Fig. 2 is the mud core of the closed box casting of prior art multi-panel, stud connection relationship diagram；
Fig. 3 is certain diesel engine trestle component in the prior art；
Fig. 4 is multi-cavity road casting sectional view in the prior art；
Fig. 5 is multi-cavity road casting structure schematic diagram in the prior art；
Fig. 6 to 14 is the casting method step schematic diagram of box casting of the invention；
Figure 15 to 16 is the casting method step schematic diagram of multi-cavity road casting of the invention.
Specific embodiment
Below in conjunction with drawings and embodiments, the invention will be further described.
The quick fixation of one of key point of the invention different dimensions mud core and casting mold, mud core and mud core and casting mold and casting mold
Method.The second is the fixation of isolated mud core, multistage mud core.The third is the connection type there are many fixing tool is optional, such as embedded part
Method, boring method etc..
A kind of fixing means of mud core of the invention is placed in pre-buried channel in mud core corresponding position, the pull rod when matching case
Embedded part in casting mold is connect and fastened with mud core.
A kind of casting method of box casting of the invention, comprising the following steps:
S1: merging built-in fitting 2；
Away from placing embedded parts 2, bearing block centre placing embedded parts 2 at edge 150mm on model 1；As shown in Figure 6；
S2: merging sandbox 3；
Sandbox 3 is tipped upside down on model 1, filling resin sand 4 and consolidation, molding after hardening 1-2 hours, after repairing type, swabbing 5 to
With to obtain casting mold A；As shown in Figure 7；
S3: production No. 1 sand core, No. 2 sand cores are placed in pre-buried channel；
As illustrated in figs. 8-11,2 step-like pre-buried channels away from placement φ 60- φ 80 at edge 150mm in No.1 core box 6,
In the pre-buried channel of the 1 φ 60- φ 80 in No. 28 bearing block centers of core box, resin sand 4 is inserted；Molding after hardening 1-2 hours,
It is stand-by after core finishing, swabbing 5；
S4: match case；
As illustrated by figs. 12-13, No. 1 sand core, No. 2 sand cores place 12-24 and as a child carry out operating with case；
S5: connection fastening；
Connecting rod 12 is fixedly connected by reserved channel with the built-in fitting 2 in casting A respectively from top to bottom；
S6: molding；
As shown in figure 14, it inserts at resin sand 4 to step in pre-buried channel, is locked after being put into gasket 14 with double nut 15；?
It is filled and led up after being covered with heat-barrier material 16 on nut with resin sand 4；Brushing fire resisting zircon flour coating after resin sand hardens 10-20 minutes
11 3 times, the control of first pass Baume degrees is in 60~65 ° of Be, and second time Baume degrees control is in 70~75 ° of Be, and third is all over Baume degrees control
System is in 40~60 ° of Be；Being subsequently placed with 4-6 as a child can be used.
Preferably, in S1, depth > 100mm of the built-in fitting 2 in casting mold A.
Preferably, in S3, the pre-buried channel is hollow pipeline 7.
Preferably, in S4, described with case, steps are as follows:
A. casting mold A is placed and matches case place, and check whether casting mold is horizontal, cleans out coremaking, mud core with horizontal ruler；
B. it is put into No. 2 mud cores in casting mold A, checks its size positions, and cleans out type chamber；
C. it is put into No. 1 mud core on No. 2 mud cores in casting mold A, checks No. 1 mud core size, position.
Preferably, in S5, connecting rod 12 is reserved logical by what is reserved in No. 1 mud core, No. 2 mud cores respectively from top to bottom
Road-hollow pipeline 7, and be fixedly connected with the built-in fitting 2 in casting mold A.
Preferably, the mode being fixedly connected is hook and hook or screw rod and nut or the side such as T-bar and T-slot
Formula.
Meanwhile a kind of casting method of multi-cavity road casting of the invention, comprising the following steps:
S1: the production upper and lower type of casting mold；
As shown in figures 15-16, it makes casting mold mo(u)ld top half: after checking that mold shape size is errorless, cleaning out die surface, brush de-
Mould agent three times, it is every all over interval 5-10 minutes；Sandbox is put into predetermined position after release agent is dry；Resin sand is inserted in model surface
And consolidation；
Casting mold hardening after test with 4 inch iron nails to its hardness, when iron nail around sandbox with top surface cannot be inserted into when into
Modulo operation is gone；Casting mold after molding need to carry out geomery inspection, carry out surface rest and reorganization after geomery is errorless；It cleans out
Brushing paint after mo(U)ld face, coating are alcohol zircon flour coating, are brushed three times, and first pass Baume degrees is controlled in 60~65 ° of Be, the
In 70~75 ° of Be, third is controlled all over Baume degrees in 40~60 ° of Be for two times Baume degrees control；
Casting mold mo(u)ld bottom half: operation is same as above；
S2: production mud core；
Resin sand, arbor and consolidation, molding, core finishing after hardening are successively filled out in core box；Brushing paint operates same S1；By mud core
It is dried in drying kiln, drying temperature is 160-220 DEG C, and soaking time is 1-3 hours；
S3: it is operated with case；
The drying of mud core, casting mold placement carry out operating with case for 24 hours afterwards；Casting mold is placed on work-yard, with level meter in different directions
It is checked, adjustment casting mold die joint to horizontal position；Check casting mold and each mud core working region without piling, core head
Position no concave-convex is uneven；
Then lower core, pre-buried channel is successively drilled out on needing fixed mud core, sand grains in hole is sucked out, then knocks in embedded part, will
Embedded part is fixedly connected with mud core group；
S4: mould assembling；
Check that each mud core position dimension of upper and lower type is errorless and type chamber completely after mould assembling；
S5: mould drying；
By down gate to casting mold blowing hot-air, at 160-220 DEG C, the time is 6-8 hours for hot blast temperature control, pays attention to measuring temperature
Position is under the venthole farthest apart from down gate at 150-200mm.
In S3, the sequence of the lower core are as follows:
(a) it is put into No. 1 mud core and No. 4 in lower mold bottommost, checks that mud core size positions are accurate；
(b) in left side it is sequentially placed into No. 2 mud cores, No. 3 mud cores, No. 7 mud cores, No. 8 four floor mud core of mud core from bottom to top；
(c) it is sequentially placed into two layers of mud core of No. 5 mud cores and No. 6 mud cores from bottom to top on right side；
(d) left side third layer ecto-entad successively No. 13 mud cores of tripping in, No. 10；
(e) right side third layer ecto-entad successively No. 14 mud cores of tripping in, No. 11 mud cores, No. 12；
(f) No. 15 mud cores of middle part tripping in, No. 16 mud cores, No. 19；
(g) right side top layer tripping in 20；
(h) middle part top layer tripping in 19；
(i) in No. 21 mud cores of upper mold tripping in, No. 22.
In S3, mud core fix the following steps are included:
(1) fixation of mud core group 1: mud core group 1 includes No. 2 mud cores, No. 3 mud cores, No. 7 mud cores；
No. 2 mud cores, No. 3 mud cores, No. 7 mud cores are fixed after lower core step (b)；It is specific as follows:
After checking that No. 2 mud cores, No. 3 mud cores, No. 7 mud core sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is bored on core 7, it should
Hole sequentially passes through No. 7 mud cores, No. 3 mud cores, No. 2 mud cores from top to bottom and enters lower mold；Stepped hole step depth 60mm enters
Lower mold depth 80-100mm；
Sand grains in hole is sucked out；
Component I is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, fire proofed wood is put on nut
Resin sand, brushing fireproof coating after hardening 10-20 minutes are inserted after material；
(2) fixation of mud core group 2: mud core group 2 includes No. 19 mud cores, No. 13 mud cores, No. 10 mud cores；
No. 19 mud cores, No. 13 mud cores, No. 10 are fixed after lower core step (e)；It is specific as follows:
After checking that No. 19 mud cores, No. 13 mud cores, No. 10 sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is above bored at No. 19,
This successively hole pass through No. 19 mud cores, No. 13 mud cores, No. 10 and enter lower mold；Stepped hole step depth 60mm, into lower mold
Depth 80-100mm；
Sand grains in hole is sucked out；
Component II is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(3) fixation of mud core group 3: mud core group 3 includes No. 14 mud cores, No. 12 mud cores, No. 6；
No. 14 mud cores, No. 12 mud cores, No. 6 are fixed after lower core step (e)；It is specific as follows:
After checking that No. 14 mud cores, No. 12 mud cores, No. 6 sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is above bored at No. 14,
This successively hole pass through No. 14 mud cores, No. 12 mud cores, No. 6 and enter lower mold；Stepped hole step depth 60mm, into lower mold
Depth 80-100mm；
Sand grains in hole is sucked out；
Component III is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(4) fixation of mud core group 4: mud core group 4 includes No. 15 mud cores of middle part mud core, No. 4 mud cores, No. 1 mud core；
Lower core step (h) " after No. 15 mud cores, No. 4 mud cores, No. 1 are fixed；It is specific as follows:
It, should in 1 30/ φ of φ, 12 stepped hole of No. 15 upper brills after checking that No. 15 mud cores, No. 4 mud cores, No. 1 size, position are accurate
Successively hole pass through No. 15 mud cores, No. 4 mud cores, No. 1 and enter lower mold；Stepped hole step depth 60mm, into lower mold depth
80-100mm；
Sand grains in hole is sucked out；
Component IV is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(5) mo(u)ld top half mud core is fixed:
After checking that No. 21 mud cores, No. 22 sizes, positions are accurate, respectively in 1 No. 21 mud cores, No. 22 upper brills 30/ φ of φ 12
Rank hole, the difference hole pass through No. 21 mud cores, No. 22 and enter upper mold；Stepped hole step depth 60mm, into lower mold depth
80-100mm；
Sand grains in hole is sucked out；
Component V is knocked in respectively in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, is put into fire proofed wood
Resin sand, brushing fireproof coating after hardening 10-20 minutes are inserted after material.
For the casting that the present invention is cast in casting, steps are as follows for moulding by casting:
The pig iron, steel scrap, carburant etc. are subjected to melting in intermediate frequency furnace, stood at 1490 DEG C -1510 DEG C, 1450 DEG C -
1480 DEG C of progress spheroidisings and breed for the first time, with stream late inoculation when molten iron discharging 2/3, carries out, molten iron pour into be placed with it is instantaneous pregnant
It educates and carries out breeding for the third time in the sprue cup of agent, bonded hard ferrite magnet starts iron liquid regulating gate at 1370-1400 DEG C in sprue cup,
Iron liquid enters casting mold.
Nodulizer controls the 1.1-1.4% in weight of molten iron.Inovulant overall control weight of molten iron 0.8-1.2%,
Middle 0.4-0.5% is the inovulant for filling Bao Shiyu nodulizer one and reacting, and 0.3-0.4% is the late inoculation carried out with stream
Agent, 0.1-0.3% are the instantaneous inoculant placed in sprue cup.
The nodulizer that spheroidising uses is ADLLOY6RE type magnesium-rare earth, and granularity is 5-20 millimeters, and first and second is pregnant
Educating agent is 75SiFe and Incollin380 mixture, and ratio is fifty-fifty, and granularity is respectively 3-10 millimeters and 15-30 millimeters.It is pregnant three times
Educate agent be Incollin380,0.5-2.0 millimeters of granularity.
Pouring type of the casting using intermediate injection, the above-mentioned speed 21mm/s of liquid level, duration of pouring 75-90 second, casting
3.2 tons of weight.
Prove example:
Locking of the present invention with Mr. Yu's diesel engine body air cavity mud core, such as Figure 16.The material trademark of body used is implemented in invention
For the spheroidal graphite cast-iron of QT400-15, melting ingredient control is shown in Table 1.Main chemical compositions control in invention example in fusion process
It is shown in Table 2.Pouring temperature, time etc., state modulators were shown in Table 3 in invention example.
By the standard parameter of testing result and the main performance assessment criteria of the present invention compares: the above heterogeneity
QT400-15 reaches the diesel engine fuselage property data requirement.Meanwhile inventing the body of casting through 1.0MPa, 60 points
The water pressure test of clock does not occur the case where leakage, therefore, the diesel-engine body using the present invention locking air cavity mud core and melting and
It is feasible when the technique of casting.
Table 1: melting ingredient control
Table 2: melting chemical composition
Table 3: casting state modulator
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other relevant
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of fixing means of mud core, it is characterised in that: be placed in pre-buried channel in mud core corresponding position, the pull rod when matching case
Embedded part in casting mold is connect and fastened with mud core.
2. a kind of casting method using the box casting of mud core fixing means described in claim 1, it is characterised in that including with
Lower step:
S1: merging built-in fitting (2)；
Away from placing embedded parts (2), bearing block centre placing embedded parts (2) at edge 150mm on model (1)；
S2: merging sandbox (3)；
Sandbox (3) is tipped upside down on model (1), filling resin sand (4) and consolidation, molding after hardening 1-2 hours, repairing type, brushing
Expect that (5) are stand-by afterwards, to obtain casting mold A；
S3: production No. 1 sand core, No. 2 sand cores are placed in pre-buried channel；
Away from 2 step-like pre-buried channels for placing φ 60- φ 80 at edge 150mm in No.1 core box (6), in No. 2 core boxes (8)
The pre-buried channel of the 1 φ 60- φ 80 in bearing block center is inserted resin sand (4)；Molding after hardening 1-2 hours, core finishing, brush
Coating (5) is stand-by afterwards；
S4: match case；
No. 1 sand core, No. 2 sand cores place 12-24 and as a child carry out operating with case；
S5: connection fastening；
Connecting rod (12) is fixedly connected by reserved channel with the built-in fitting (2) in casting A respectively from top to bottom；
S6: molding；
It is inserted at resin sand (4) to step in pre-buried channel, is put into gasket (14) and is locked afterwards with double nut (15)；On nut
Heat-barrier material (16) is covered with to be filled and led up with resin sand (4) afterwards；Brushing fire resisting zircon flour coating after resin sand hardens 10-20 minutes
(11) 3 times, the control of first pass Baume degrees is in 60~65 ° of Be, and second time Baume degrees control is in 70~75 ° of Be, and third is all over Baume degrees
Control is in 40~60 ° of Be；Being subsequently placed with 4-6 as a child can be used.
3. a kind of casting method of box casting as claimed in claim 2, it is characterised in that: in S1, the built-in fitting (2)
Depth > 100mm in casting mold A.
4. a kind of casting method of box casting as claimed in claim 2, it is characterised in that: in S3, the pre-buried channel
For hollow pipeline (7).
5. a kind of casting method of box casting as claimed in claim 2, it is characterised in that: described to match case step in S4
It is as follows:
A. casting mold A is placed and matches case place, and check whether casting mold is horizontal, cleans out coremaking, mud core with horizontal ruler；
B. it is put into No. 2 mud cores in casting mold A, checks its size positions, and cleans out type chamber；
C. it is put into No. 1 mud core on No. 2 mud cores in casting mold A, checks No. 1 mud core size, position.
6. a kind of casting method of box casting as claimed in claim 2 or 4, it is characterised in that: in S5, by connecting rod
(12) from top to bottom respectively by No. 1 mud core, the reserved channel-hollow pipeline (7) reserved in No. 2 mud cores, and in casting mold A
Built-in fitting (2) be fixedly connected.
7. a kind of casting method of box casting as claimed in claim 6, it is characterised in that: the mode being fixedly connected is
Hook and hook or screw rod and nut or the modes such as T-bar and T-slot.
8. a kind of casting method of the multi-cavity road casting using mud core fixing means described in claim 1, it is characterised in that including
Following steps:
S1: the production upper and lower type of casting mold；
It makes casting mold mo(u)ld top half: after checking that mold shape size is errorless, cleaning out die surface, brushing release agent three times, every time
Interval 5-10 minutes；Sandbox is put into predetermined position after release agent is dry；In model surface filling resin sand and consolidation；
Casting mold hardening after test with 4 inch iron nails to its hardness, when iron nail around sandbox with top surface cannot be inserted into when into
Modulo operation is gone；Casting mold after molding need to carry out geomery inspection, carry out surface rest and reorganization after geomery is errorless；It cleans out
Brushing paint after mo(U)ld face, coating are alcohol zircon flour coating, are brushed three times, and first pass Baume degrees is controlled in 60~65 ° of Be, the
In 70~75 ° of Be, third is controlled all over Baume degrees in 40~60 ° of Be for two times Baume degrees control；
Casting mold mo(u)ld bottom half: operation is same as above；
S2: production mud core；
Resin sand, arbor and consolidation, molding, core finishing after hardening are successively filled out in core box；Brushing paint operates same S1；By mud core
It is dried in drying kiln, drying temperature is 160-220 DEG C, and soaking time is 1-3 hours；
S3: it is operated with case；
The drying of mud core, casting mold placement carry out operating with case for 24 hours afterwards；Casting mold is placed on work-yard, with level meter in different directions
It is checked, adjustment casting mold die joint to horizontal position；Check casting mold and each mud core working region without piling, core head
Position no concave-convex is uneven；
Then lower core, pre-buried channel is successively drilled out on needing fixed mud core, sand grains in hole is sucked out, then knocks in embedded part, will
Embedded part is fixedly connected with mud core group；
S4: mould assembling；
Check that each mud core position dimension of upper and lower type is errorless and type chamber completely after mould assembling；
S5: mould drying；
By down gate to casting mold blowing hot-air, at 160-220 DEG C, the time is 6-8 hours for hot blast temperature control, pays attention to measuring temperature
Position is under the venthole farthest apart from down gate at 150-200mm.
9. a kind of casting method of multi-cavity road as claimed in claim 8 casting, it is characterised in that: in S3, the lower core
Sequentially are as follows:
(a) it is put into No. 1 mud core and No. 4 in lower mold bottommost, checks that mud core size positions are accurate；
(b) in left side it is sequentially placed into No. 2 mud cores, No. 3 mud cores, No. 7 mud cores, No. 8 four floor mud core of mud core from bottom to top；
(c) it is sequentially placed into two layers of mud core of No. 5 mud cores and No. 6 mud cores from bottom to top on right side；
(d) left side third layer ecto-entad successively No. 13 mud cores of tripping in, No. 10；
(e) right side third layer ecto-entad successively No. 14 mud cores of tripping in, No. 11 mud cores, No. 12；
(f) No. 15 mud cores of middle part tripping in, No. 16 mud cores, No. 19；
(g) right side top layer tripping in 20；
(h) middle part top layer tripping in 19；
(i) in No. 21 mud cores of upper mold tripping in, No. 22.
10. a kind of casting method of multi-cavity road as claimed in claim 9 casting, it is characterised in that: in S3, mud core fixed packet
Include following steps:
(1) fixation of mud core group 1: mud core group 1 includes No. 2 mud cores, No. 3 mud cores, No. 7 mud cores；
No. 2 mud cores, No. 3 mud cores, No. 7 mud cores are fixed after lower core step (b)；It is specific as follows:
After checking that No. 2 mud cores, No. 3 mud cores, No. 7 mud core sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is bored on core 7, it should
Hole sequentially passes through No. 7 mud cores, No. 3 mud cores, No. 2 mud cores from top to bottom and enters lower mold；Stepped hole step depth 60mm enters
Lower mold depth 80-100mm；
Sand grains in hole is sucked out；
Component I is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, fire proofed wood is put on nut
Resin sand, brushing fireproof coating after hardening 10-20 minutes are inserted after material；
(2) fixation of mud core group 2: mud core group 2 includes No. 19 mud cores, No. 13 mud cores, No. 10 mud cores；
No. 19 mud cores, No. 13 mud cores, No. 10 are fixed after lower core step (e)；It is specific as follows:
After checking that No. 19 mud cores, No. 13 mud cores, No. 10 sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is above bored at No. 19,
This successively hole pass through No. 19 mud cores, No. 13 mud cores, No. 10 and enter lower mold；Stepped hole step depth 60mm, into lower mold
Depth 80-100mm；
Sand grains in hole is sucked out；
Component II is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(3) fixation of mud core group 3: mud core group 3 includes No. 14 mud cores, No. 12 mud cores, No. 6；
No. 14 mud cores, No. 12 mud cores, No. 6 are fixed after lower core step (e)；It is specific as follows:
After checking that No. 14 mud cores, No. 12 mud cores, No. 6 sizes, positions are accurate, 1 30/ φ of φ, 12 stepped hole is above bored at No. 14,
This successively hole pass through No. 14 mud cores, No. 12 mud cores, No. 6 and enter lower mold；Stepped hole step depth 60mm, into lower mold
Depth 80-100mm；
Sand grains in hole is sucked out；
Component III is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(4) fixation of mud core group 4: mud core group 4 includes No. 15 mud cores of middle part mud core, No. 4 mud cores, No. 1 mud core；
Lower core step (h) " after No. 15 mud cores, No. 4 mud cores, No. 1 are fixed；It is specific as follows:
It, should in 1 30/ φ of φ, 12 stepped hole of No. 15 upper brills after checking that No. 15 mud cores, No. 4 mud cores, No. 1 size, position are accurate
Successively hole pass through No. 15 mud cores, No. 4 mud cores, No. 1 and enter lower mold；Stepped hole step depth 60mm, into lower mold depth
80-100mm；
Sand grains in hole is sucked out；
Component IV is knocked in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, after being put into refractory material
Insert resin sand, brushing fireproof coating after hardening 10-20 minutes；
(5) mo(u)ld top half mud core is fixed:
After checking that No. 21 mud cores, No. 22 sizes, positions are accurate, respectively in 1 No. 21 mud cores, No. 22 upper brills 30/ φ of φ 12
Rank hole, the difference hole pass through No. 21 mud cores, No. 22 and enter upper mold；Stepped hole step depth 60mm, into lower mold depth
80-100mm；
Sand grains in hole is sucked out；
Component V is knocked in respectively in 12 hole φ, is locked after being sequentially placed into φ 12,24 gasket of φ and M12 nut, is put into fire proofed wood
Resin sand, brushing fireproof coating after hardening 10-20 minutes are inserted after material.
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| CN110681829A (en) * | 2019-10-23 | 2020-01-14 | 中船海洋动力部件有限公司 | Casting core pulling type box matching method adopting thick mud core and core pulling type box matching method |
| CN112008045A (en) * | 2020-07-17 | 2020-12-01 | 共享装备股份有限公司 | Core marking tool and method for large sand core |
| CN114871386A (en) * | 2022-07-07 | 2022-08-09 | 中国航发北京航空材料研究院 | Tool for reverse-inclination resin sand core combination and combination assembly method thereof |
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Inventor after: Wang Yonghong Inventor after: Guo Min Inventor after: Fu Yuelou Inventor after: Chen Xiaolong Inventor after: Zhao Chenhua Inventor after: Yan Jiangbo Inventor before: Wang Yonghong |