CN104874742A - Casting production method of large box - Google Patents
Casting production method of large box Download PDFInfo
- Publication number
- CN104874742A CN104874742A CN201510341675.7A CN201510341675A CN104874742A CN 104874742 A CN104874742 A CN 104874742A CN 201510341675 A CN201510341675 A CN 201510341675A CN 104874742 A CN104874742 A CN 104874742A
- Authority
- CN
- China
- Prior art keywords
- core
- lock core
- screw channel
- longitudinal
- burst
- 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
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a casting production method of a large box. A used sand structure comprises a cover core, a lock cylinder and a base sand core. The casting production method comprises the following steps: using a transverse locking cylinder screw to insert a transverse lock cylinder screw channel, and locking and fixing the two end parts of the transverse locking cylinder screw protruding to the lock cylinder by gaskets and lock cylinder nuts; placing the lock cylinder in the base sand core; installing a longitudinal lock cylinder screw in a formed longitudinal lock cylinder screw channel, and fixing the lock core on the base sand core by fixing a reinforcing bar at the lower end of the longitudinal lock core screw and installing a gasket and a lock cylinder nut at the upper end of the longitudinal lock core screw; closing the cover core, and carrying out casting production according to a conventional production process. According to the casting production method of the large box provided by the invention, the problems that a large box casting with a complicate inner cavity structure is low in production efficiency and high in rejection rate in the prior art.
Description
Technical field
The invention belongs to machine casting technical field, be specifically related to a kind of method for casting production of large-size box.
Background technology
A lot of large-size box cast product size is large, and internal cavity structures design is complicated, and higher to the quality requirement of product, and therefore in Foundry Production, the core of inner chamber can not global formation.As the block that large blower uses, it requires to bear higher oil pressure when working and using; And such casing product structure is special, cabinets cavity is provided with third gear bearing block dividing plate and horizontal gusset, and therefore during casting, the core of inner chamber can not overallly be formed.
The traditional mode of production of large-size box foundry goods is that inner chamber core is carried out core under burst making, burst.The shortcoming of this production method is: under burst, during core production operation, operation easier is large, production efficiency is low, rub between core sand core under burst simultaneously and very easily cause sand holes defect, simultaneously the burst core of inner chamber is very easily thrust by molten iron when pouring into a mould because the little sand core strength of cross dimensions of each core is poor and splits and produce floating, thus causes the leakage of oil of product to be scrapped.
Summary of the invention
The object of this invention is to provide a kind of method for casting production of large-size box, to solve the large-size box castings production inefficiency of existing method for casting production production internal cavity structures complexity, the problem that percent defective is high.
The technical solution adopted in the present invention is, a kind of method for casting production of large-size box, the sand mould structure used comprises cover core, lock core and base core, cover core is provided with sprue gate and rising head, cover core is for being placed on base core, and together form the main part of sand mould structure, lock core is for being arranged on the inside of this sand mould structure main part, lock core is the multi-disc core fabricated structure from left to right arranged, casing main body die cavity is formed between lock core and cover core, cabinets cavity structure die cavity is formed between the multi-disc core of composition lock core, lock core is horizontally disposed with the horizontal lock core screw channel of through lock core multi-disc core, vertically be provided with the first longitudinal screw channel part of through lock core, base core is provided with the second longitudinal screw channel part, first longitudinal screw channel part is corresponding with the second longitudinal screw channel part position and form longitudinal lock core screw channel,
This method for casting production comprises the following steps:
Step one, make burst core, in each burst core, transverse screw passage is all set, wherein be provided with the vertical screw channel of this burst core through in a burst core simultaneously, transverse screw channel position in each burst core is corresponding, combine each burst core and form lock core, the through lock core of transverse screw passage of each burst core forms horizontal lock core screw channel, the vertical screw channel of burst core then becomes the first longitudinal screw channel part of through lock core, use horizontal lock core screw rod through horizontal lock core screw channel, and stretch out at horizontal lock core screw rod and all to use in the end, two ends of lock core pad and lock core nut to be laterally locked lock core,
Step 2, make base core, in base core, the second longitudinal screw channel part corresponding with the first longitudinal screw channel part position is set, lock core after laterally fixing is placed in base core, the second longitudinal screw channel part in first longitudinal screw channel part of through lock core and base core forms longitudinal lock core screw channel, longitudinal lock core screw rod is set in longitudinal screw passage, reinforcing bar is fixed in the lower end of longitudinal lock core screw rod protuberate basic unit core, in end, longitudinal lock core screw rod upper end, pad and lock core nut are set, lock core is fixed on base core,
Step 3, put on base core by the cover core lid being provided with sprue gate and rising head made, conveniently production technology is carried out cast and is produced.
In step one, burst core manufacturing process also comprises, and after each burst core normal cure, carries out coating application, dryouies coating, carry out polishing smoothing to coating vestige to each burst core.
In step one, the gap also comprised between each burst core of the lock core after to lateral locking is carried out coating application and makes burn out process.
The position of the corresponding horizontal lock core screw channel in two ends, left and right of lock core is provided with lock core nut hole, corresponding, in step one, also comprises, and fill out hole with resin sand to above-mentioned two lock core nuts hole and fill, surface coating application also makes burn out process.
The position of the corresponding longitudinal lock core screw channel in upper end of lock core is provided with lock core nut hole, corresponding, and in step 2, also comprise, fill out hole with resin sand to this lock core nut hole and fill, surface coating application also makes burn out process.
The invention has the beneficial effects as follows, adopt this method for casting production, under the inner chamber burst coremaking that the large-size box foundry goods effectively solving existing casting method production inner-cavity structure complexity exists, burst, core operation easier is large, production efficiency is low, when the sand holes defect of simultaneously association, cast, molten iron thrusts core and produces the floating thus technical quality problems such as cause that the leakage of oil of product is scrapped, reduce lower core operation easier, improve production efficiency, and extra negative effect can not be caused.
Accompanying drawing explanation
Fig. 1 is the structural representation of the large-size box of preparation in the embodiment of the present invention 1;
Fig. 2 is the structural representation of lock core in the embodiment of the present invention 1;
Fig. 3 be in the embodiment of the present invention 1 step one complete after structural representation;
Fig. 4 is the structural representation in the embodiment of the present invention 1 in step 2 enforcement;
Fig. 5 be in the embodiment of the present invention 1 step 2 complete after structural representation;
Fig. 6 be in the embodiment of the present invention 1 step 3 complete after structural representation.
Wherein, 1, cover core, 2, lock core, 2-1, the first core, 2-2, the second core, 2-3, the 3rd core, 2-4, the 4th core, 3, base core, 4, foundry goods die cavity, 4-1, casing main body die cavity, 4-2, cabinets cavity structure die cavity, 5, rising head, 6, horizontal lock core screw channel, 7, horizontal lock core screw rod, 8, lock core nut, 9, lock core nut hole, 10, longitudinal lock core screw channel, 10-1, the first longitudinal screw channel part, 10-2, the second longitudinal screw channel part, 11, longitudinal lock core screw rod.
Detailed description of the invention
As shown in Figure 1, the block for large blower uses of the present embodiment manufacture, this block is the casing series products of inner chamber project organization complexity, the long 1146mm of block, wide 1420mm, high 720mm; Block size of the same type can reach long 4000mm, wide 4500mm, high 2200mm.The inner chamber of block has third gear bearing block dividing plate and horizontal gusset.
Shown in composition graphs 2 to Fig. 6, the sand mould structure that the inventive method uses comprises cover core 1, lock core 2 and base core 3, cover core 1 is provided with sprue gate and multiple rising head 5, cover core 1 is for being placed on base core 3, and together forming the main part of sand mould structure, lock core 2 is for being arranged on the inside of this sand mould structure main part.In the present embodiment, lock core is the multi-disc core fabricated structure from left to right arranged, specifically comprise the first core 2-1, second core 2-2, the 3rd core 2-3 and the 4th core 2-4, wherein, form casing main body die cavity 4-1 between lock core 2 and cover core 1, the first core 2-1, the second core 2-2, between the 3rd core 2-3 and the 4th core 2-4, form cabinets cavity structure die cavity 4-2 (i.e. the die cavity of bearing block dividing plate and horizontal gusset).Lock core is horizontally disposed with through first core 2-1, the horizontal lock core screw channel 6 of the second core 2-2, the 3rd core 2-3 and the 4th core 2-4, vertically through 3rd core 2-3 is provided with the first longitudinal screw channel part 10-1, base core 3 is provided with the second longitudinal screw channel part 10-2, the first longitudinal screw channel part 10-1 is corresponding with the second longitudinal screw channel part 10-2 position and form longitudinal lock core screw channel 10.The position of the position of the corresponding horizontal lock core screw channel 6 in two ends, left and right of lock core 2 and the corresponding longitudinal lock core screw channel 10 in upper end of lock core 2 is provided with lock core nut hole 9.
The inventive method step is as follows:
Step one, wooden die is used to adopt furane resins sand molding, burst makes the first core 2-1 as shown in Figure 2, second core 2-2, 3rd core 2-3 and the 4th core 2-4, transverse screw passage is provided with in each burst core, the vertical screw channel of this core through is set in 3rd core 2-3 simultaneously, transverse screw channel position in each burst core is corresponding, the transverse screw channel center of each burst core is all apart from bottom surface 160 ~ 180mm, distance axis 20 ~ 30mm, screw channel adopts the through hole of Φ 20 ~ 25, the transverse screw channel requirements of burst core is through and form horizontal lock core screw channel 6, and horizontal lock core screw channel 6 requires to be greater than 50mm apart from die cavity edge minimum dimension, vertical screw channel after each burst core combination in the 3rd core 2-3 then becomes the first longitudinal screw channel part 10-2 of through lock core, , the screw channel of burst core adopts makes location on mould, adopts the mode of taking out rod to form passage.
After first core 2-1, the second core 2-2, the 3rd core 2-3 and the 4th core 2-4 normal cure, use alcohol-base paint, use coating concentration 55 ~ 60 Baume degrees, use B to detect; After completing coating application, dryout coating, require that coating layer thickness reaches 0.6 ~ 1mm; With emery cloth, polishing smoothing is carried out to coating vestige.
As shown in Figure 3, combine each burst core, use the horizontal lock core screw rod 7 of M18 or M20 through horizontal lock core screw channel 6, the two ends of horizontal lock core screw channel 6 reserve the long thread segment of 40 ~ 60mm, the packing ring of thickness 5 ~ 10mm is first encased inside at the two ends of horizontal lock core screw rod 7, be screwed into from the two ends of horizontal lock core screw rod 7 with the lock core nut 8 of M18 or M20, screw up with a wrench lock core nut 8 again.Now, four burst cores (i.e. the first core 2-1, the second core 2-2, the 3rd core 2-3 and the 4th core 2-4) become lock core 2 with regard to horizontal fixed connection lock.To the first core 2-1, the second core 2-2, gap between the 3rd core 2-3 and the 4th core 2-4 are carried out coating application and make burn out process; Fill out hole with resin sand to two lock core nut holes 9 again to fill, surface coating application also makes burn out process.
Step 2, make base core 3, in base core 3, the second longitudinal screw channel part 10-2 corresponding with the first longitudinal screw channel part 10-1 position is set, as shown in Figure 4, be placed in base core 3 by the lock core 2 after laterally fixing, the second longitudinal screw channel part 10-2 in the first longitudinal screw channel part 10-1 of through lock core 2 and base core 3 forms longitudinal lock core screw channel 10.As shown in Figure 5, longitudinal lock core screw rod 11 of M18 or M20 is set in the longitudinal lock core screw channel 10 formed, the lower end welding Φ 20 ~ 25 of longitudinal lock core screw rod 11 protuberate basic unit core 3, the reinforcing bar of length 150 ~ 200, the upper end of longitudinal lock core screw rod 11 reserves the long thread segment of 40 ~ 60mm, first be encased inside the packing ring of thickness 5 ~ 10mm in the upper end of longitudinal lock core screw rod 11, then be locked with the lock core nut 8 of M18 or M20, thus lock core 2 is fixed on base core 3.Fill out hole with the lock core nut hole 9 of resin sand to correspondence to fill, surface coating application also makes burn out process.
Step 3, as shown in Figure 6, the cover core 1 being provided with sprue gate and rising head 5 made lid is put on base core 3, conveniently production technology carries out cast production, obtain foundry goods die cavity 4 by casing main body die cavity 4-1 and cabinets cavity structure die cavity 4-2, and obtain the block corresponding with foundry goods die cavity 4 by cast.
Claims (5)
1. the method for casting production of a large-size box, it is characterized in that, the sand mould structure used comprises cover core, lock core and base core, cover core is provided with sprue gate and rising head, cover core is for being placed on base core, and together form the main part of sand mould structure, lock core is for being arranged on the inside of this sand mould structure main part, lock core is the multi-disc core fabricated structure from left to right arranged, casing main body die cavity is formed between lock core and cover core, cabinets cavity structure die cavity is formed between the multi-disc core of composition lock core, lock core is horizontally disposed with the horizontal lock core screw channel of through lock core multi-disc core, vertically be provided with the first longitudinal screw channel part of through lock core, base core is provided with the second longitudinal screw channel part, first longitudinal screw channel part is corresponding with the second longitudinal screw channel part position and form longitudinal lock core screw channel,
This method for casting production comprises the following steps:
Step one, make burst core, in each burst core, transverse screw passage is all set, wherein be provided with the vertical screw channel of this burst core through in a burst core simultaneously, transverse screw channel position in each burst core is corresponding, combine each burst core and form lock core, the through lock core of transverse screw passage of each burst core forms horizontal lock core screw channel, the vertical screw channel of burst core then becomes the first longitudinal screw channel part of through lock core, use horizontal lock core screw rod through horizontal lock core screw channel, and stretch out at horizontal lock core screw rod and all to use in the end, two ends of lock core pad and lock core nut to be laterally locked lock core,
Step 2, make base core, in base core, the second longitudinal screw channel part corresponding with the first longitudinal screw channel part position is set, lock core after laterally fixing is placed in base core, the second longitudinal screw channel part in first longitudinal screw channel part of through lock core and base core forms longitudinal lock core screw channel, longitudinal lock core screw rod is set in longitudinal screw passage, reinforcing bar is fixed in the lower end of longitudinal lock core screw rod protuberate basic unit core, in end, longitudinal lock core screw rod upper end, pad and lock core nut are set, lock core is fixed on base core,
Step 3, put on base core by the cover core lid being provided with sprue gate and rising head made, conveniently production technology is carried out cast and is produced.
2. according to the method for casting production of large-size box described in claim 1, it is characterized in that, in described step one, burst core manufacturing process also comprises, and after each burst core normal cure, carries out coating application to each burst core, dryout coating, polishing smoothing is carried out to coating vestige.
3. according to the method for casting production of large-size box described in claim 1, it is characterized in that, in described step one, the gap also comprised between each burst core of the lock core after to lateral locking is carried out coating application and makes burn out process.
4. according to the method for casting production of large-size box described in claim 1 or 2 or 3, it is characterized in that, the position of the corresponding horizontal lock core screw channel in two ends, left and right of described lock core is provided with lock core nut hole, corresponding, in step, also comprise, fill out hole with resin sand to above-mentioned two lock core nuts hole and fill, surface coating application also makes burn out process.
5. according to the method for casting production of large-size box described in claim 1, it is characterized in that, the position of the corresponding longitudinal lock core screw channel in upper end of described lock core is provided with lock core nut hole, corresponding, in step 2, also comprise, fill out hole with resin sand to this lock core nut hole and fill, surface coating application also makes burn out process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341675.7A CN104874742A (en) | 2015-06-18 | 2015-06-18 | Casting production method of large box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341675.7A CN104874742A (en) | 2015-06-18 | 2015-06-18 | Casting production method of large box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104874742A true CN104874742A (en) | 2015-09-02 |
Family
ID=53942566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510341675.7A Pending CN104874742A (en) | 2015-06-18 | 2015-06-18 | Casting production method of large box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104874742A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328130A (en) * | 2015-10-30 | 2016-02-17 | 宁夏共享模具有限公司 | 3D printing sand core clamping device |
| CN110405149A (en) * | 2019-07-25 | 2019-11-05 | 北京航星机器制造有限公司 | A kind of resin sand group co-casting protective device and method |
| CN111036841A (en) * | 2019-12-31 | 2020-04-21 | 广西玉柴机器股份有限公司 | Method for quickly forming cylinder block casting |
-
2015
- 2015-06-18 CN CN201510341675.7A patent/CN104874742A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328130A (en) * | 2015-10-30 | 2016-02-17 | 宁夏共享模具有限公司 | 3D printing sand core clamping device |
| CN110405149A (en) * | 2019-07-25 | 2019-11-05 | 北京航星机器制造有限公司 | A kind of resin sand group co-casting protective device and method |
| CN110405149B (en) * | 2019-07-25 | 2021-12-07 | 北京航星机器制造有限公司 | Resin sand combined casting mold protection device and method |
| CN111036841A (en) * | 2019-12-31 | 2020-04-21 | 广西玉柴机器股份有限公司 | Method for quickly forming cylinder block casting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204018686U (en) | A kind of die casting of gear box of automobile | |
| CN102069148A (en) | Method for casting brake disc for high-speed locomotive | |
| CN104907497B (en) | The tiltedly outer multiple-core casting method of the type of pillar group foundry goods | |
| CN104874742A (en) | Casting production method of large box | |
| CN203578677U (en) | Sand mould casting die | |
| CN202411350U (en) | Special chaplet for casting steam chest | |
| CN102744389B (en) | Dead head-free casting technology | |
| CN111097881A (en) | Casting forming process of roller steel casting | |
| CN203599478U (en) | Sand core, metal die and metal casting equipment | |
| CN204842857U (en) | Casting sand mould structure of large -scale box | |
| CN103658528A (en) | Vacuum casting valve body sand mold structure | |
| CN105583374B (en) | A kind of method of production of large aluminum alloy closing casing | |
| CN203459669U (en) | Central air conditioner shell non-riser casting structure | |
| CN201313153Y (en) | Novel composite model of flange fitting | |
| CN207076936U (en) | Bushing pipe is injected in a kind of Press Tools for Automobiles manufacture | |
| CN213614034U (en) | Hardware die-casting die with improved structure | |
| CN203725709U (en) | Special cold iron sand core | |
| CN203621405U (en) | Girder casting die with thin-walled tube | |
| CN204018690U (en) | A kind of die casting | |
| CN204934517U (en) | Core arbor in the casting sand mold of steam turbine low-pressure inner casing bottom | |
| CN204603208U (en) | A kind of combination sand mould structure being convenient to fix | |
| CN103223471A (en) | Method for manufacturing medium-pressure outer cylinder spheroidal graphite iron casting of ultra-supercritical turbine | |
| CN202726026U (en) | A flash-free structure of a low pressure casting die | |
| CN105170904A (en) | Metallurgical slag basin model-free casting method | |
| CN202701346U (en) | Box body die-casting mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150902 |
|
| WD01 | Invention patent application deemed withdrawn after publication |