CN104722718A - Casting method of mud pump air dome shell for bearing pressure - Google Patents
Casting method of mud pump air dome shell for bearing pressure Download PDFInfo
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- CN104722718A CN104722718A CN201510112026.XA CN201510112026A CN104722718A CN 104722718 A CN104722718 A CN 104722718A CN 201510112026 A CN201510112026 A CN 201510112026A CN 104722718 A CN104722718 A CN 104722718A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
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Abstract
The invention discloses a casting method of a mud pump air dome shell for bearing pressure. The method comprises the following steps: step one. setting process, namely selecting the air dome shell with a downward big opening; optimizing working allowance layer on an outer sphere of the air dome shell; manufacturing a sphere sand core and a core head and a corresponding fixing rod; arranging a thermal-preservation open riser on the top end of the air dome shell; arranging two chilling blocks at the opening end of the air dome shell; installing a pouring runner; and drawing an art work sheet; step two, casting, namely manufacturing a wood core box for a solid pattern and the ball-shaped spherical sand core and the core head; modeling, taking out the solid pattern to form a cavity; manufacturing the spherical sand core, the core head, and a sand core skeleton, and placing an exhaust rope; spraying the paint; carrying out mold assembling, baking a sand mold, pouring, opening the mold; primarily blasting sand; grinding and repairing; normalizing, secondarily blasting sand to obtain the product. Through the adoption of the method disclosed by the invention, the manufactured air dome shell is high in cast precision, and the production cost is obviously reduced.
Description
Technical field
The invention belongs to plant equipment manufacturing technology field, relate to a kind of casting method of pressure-bearing mud pump air incrustation.
Background technology
Air rubber capsule is the vitals on oil drilling and extracting equipment slush pump, plays voltage stabilizing, reduces fluctuation in drilling process, and air rubber capsule shell is the part mainly playing protection and pressure-bearing effect.With reference to Fig. 1, Fig. 2, the shape of air rubber capsule shell 1 is hollow ball, and technical requirement is: inside and outside surperficial magnetic powder inspection, volume Non-Destructive Testing, hydrostatic test pressure-bearing 52Mpa.
In order to ensure product quality, be generally made as forging, material is 35CrMoA, but the air rubber capsule shell later stage mechanical processing difficulty that this mode forges is large, and the production cycle is long, causes production cost higher, and cost is approximately 4 times of casting air rubber capsule shell.
Often defect is more for the casting air rubber capsule shell adopting Regular casting methods to produce, and interior tissue is fine and close not, easily causes seepage and crack defect, therefore, is badly in need of the new method that development makes air rubber capsule shell.
Summary of the invention
The object of this invention is to provide a kind of casting method of pressure-bearing mud pump air incrustation, solve forging air rubber capsule shell mechanical processing difficulty in prior art large, cause the problem that production cost is higher.
The technical solution adopted in the present invention is, a kind of casting method of pressure-bearing mud pump air incrustation, implements according to following steps:
Step 1, technique are arranged
1.1) the somatotype scheme of the large mouth down of air rubber capsule shell is selected;
1.2) according to the structure of air rubber capsule shell, setting is optimized to the allowance layer of air rubber capsule shell spherical outside surface;
1.3) make spheroid core and the core print of air rubber capsule shell inner cavity, core material selects alkali phenol resin sand, makes corresponding fixed bar simultaneously;
1.4) heat insulating open riser is set at air rubber capsule housing top end;
1.5) arrange two place's chills at air rubber capsule shell aperture end place, a place is chill two, and a place is chill one, and arranges reasonable clearance;
1.6) two-layer cast runner is installed;
1.7) draw craft drawing;
Step 2, enforcement casting
2.1) by art work sheet, make the entity apperance of air rubber capsule shell, make the wood core box of spherical ball core and core print simultaneously;
2.2) by art work sheet, by entity apperance, heat insulating open riser, chill one, chill two and the cast runner difference moulding in drag box and cope made, moulding sand adopts alkali phenol resin sand, should by molding sand tamping during moulding, the normal temperature compression strength detecting molding sand should be greater than 2.0MPa, after molding sand self-hardening, take out entity apperance and form die cavity;
2.3) by art work sheet, make spheroid core and core print, first process core skeleton, arbor mobile jib adopts steel pipe, arbor welds by art work sheet status requirement the fixed bar that annulus is used for installing core, then on arbor, uses reinforcement welding many places reinforced support according to the shape of core box, before coremaking, on arbor mobile jib, is wound around straw rope, put exhaust rope unobstructed to ensure core steam vent, during coremaking, ready-made arbor will be placed correct position in core box;
2.4) stenciling coating, brushes ready-made die cavity and spheroid core and core print;
2.5) mould assembling;
2.6) sand mold baking, dries molding sand before cast, until terminate during cast to dry;
2.7) pour into a mould;
2.8) unpack;
2.9) sandblasting, carries out sandblasting to air rubber capsule shell;
2.10) polishing and reparation;
2.11) normalized treatment, carries out high temperature normalizing process to air rubber capsule shell, and normalizing temperature controls at 900 DEG C ~ 930 DEG C, and time controling is 5 ~ 6 hours;
2.12) secondary sandblasting, carries out secondary sandblasting to air rubber capsule shell.
The invention has the beneficial effects as follows, adopt the production method of the casting air rubber capsule shell of alkali phenol resin sand and special process method, casting air rubber capsule outer shell outer wall allowance utilizes solidification simulation CAE software to carry out process optimization setting, and seeks the most rational outer surface of outer cover allowance by actual production checking; The chill of two kinds of different sizes is set at shell big opening end place, reaches suitable chill effect, the object of consecutive solidification during solidification of molten steel, can be realized; This casting air rubber capsule enclosure dense structure, the inside and outside wall of blank is detected a flaw equal flawless, and inwall is non-finished surface, surface quality and dimensional accuracy reach and arrange requirement, thoroughly solve the technical barrier of inwall processing difficulties, reduce production cost, have good application value.
Accompanying drawing explanation
Fig. 1 is the perspective view of the air rubber capsule shell that the inventive method will make;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the sectional view after the inventive method arranges allowance;
Fig. 4 is the technological principle schematic diagram that the inventive method casting method adopts;
Fig. 5 is the entity appearance schematic diagram of the moulding air rubber capsule shell of the inventive method;
Servicing unit assembly structure schematic diagram when Fig. 6 is the inventive method casting;
Fig. 7 is the structure for amplifying schematic diagram of fixed bar 10 in Fig. 6.
In figure, 1. air rubber capsule shell, 2. allowance layer, 3. heat insulating open riser, 4. pours into a mould runner, 5. chill one, 6. chill two, 7. spherical core and core print, 8. core skeleton, 9. straw rope and exhaust rope, 10. fixed bar, 11. steam vents, 12. drag boxs, 13. molding sand, 14. die joints, 15. copes, 16. entity apperances.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
With reference to Fig. 1, Fig. 2, being the structural representation of the pressure-bearing mud pump air incrustation blank that the present invention will produce, is directly the compact dimensions of air rubber capsule shell 1.
With reference to Fig. 3, be the sectional view after the inventive method arranges allowance, also leave allowance layer 2 outward at the compact dimensions of air rubber capsule shell 1.
With reference to Fig. 4, the casting technique principle of the air rubber capsule shell of the inventive method is: adopt spheroid core and core print 7 to carry out middle somatotype, make the openend of air rubber capsule shell 1 down, be conducive to core arrange and fix, two kinds of chills (chill 1, chill 2 6) are used to accelerate the cooling of openend (end), air rubber capsule shell 1 top arranges heat insulating open riser 3 increases molten steel feeding effect, cast runner 4 adopts two-layer ladder to pour into a mould vibrational power flow, is conducive to the object reaching consecutive solidification when air rubber capsule shell 1 solidifies.
With reference to Fig. 5, be the entity apperance outline drawing of the moulding air rubber capsule shell of the inventive method: entity apperance 16 can select timber or plastic production, from middle largest diameter punishment type, entity apperance 16 is used for being formed the die cavity of molding sand 13.
With reference to Fig. 6, the die cavity manufacturing process that the inventive method adopts in casting air rubber capsule shell production process is, comprise with die joint 14 be benchmark drag box 12 and cope 15, entity apperance 16 is placed in the middle of drag box 12 and cope 15, entity apperance about 16 is connected to heat insulating open riser 3, cast runner 4, chill 1 and chill 26, chill 1 is arranged along entity apperance 16 openend periphery, and chill 26 is arranged along openend lower surface; In drag box 12 and cope 15, fill molding sand 13 tamping, after molding sand 13 self-hardening of drag box 12 and cope 15, take out entity apperance 16 and form die cavity.
The manufacturing process of spheroid core and core print 7 is, spheroid core and core print 7 lower end are provided with steam vent 11 and lead to outside lower sand mold 12, straw rope and exhaust rope 9 is preset in the middle of spheroid core and core print 7, also be mounted with core skeleton 8, the lower end of core skeleton 8 is connected with fixed bar 10, fixed bar 10 is to care for fixing to spheroid core and core print 7, and when preventing from pouring into a mould, molten steel produces buoyancy to spheroid core and core print 7 and causes the casting flaw of core floatation, sees Fig. 7.
Spheroid core and core print 7 are placed in the die cavity that molding sand 13 formed, mould assembling fixing spheroid core and core print 7.
In sum, the casting method of pressure-bearing mud pump air incrustation of the present invention, utilizes above-mentioned servicing unit, implements according to following steps:
Step 1, technique are arranged
1.1) easy to operate when considering that core print is fixed, select the somatotype scheme of the large mouth down of air rubber capsule shell 1, see the die joint 14 in Fig. 3, Fig. 4;
1.2) according to the structure of air rubber capsule shell 1, the allowance layer 2 of computer solidification simulation software to air rubber capsule shell 1 spherical outside surface is optimized setting, makes it reach the object of desirable consecutive solidification;
1.3) make spheroid core and the core print 7 of air rubber capsule shell 1 inner chamber, core material selects alkali phenol resin sand, and core print length is determined according to relevant GB with gap, makes corresponding fixed bar 10 simultaneously;
1.4) according to modular approach or other computational methods, arrange a large heat insulating open riser 3 on air rubber capsule shell 1 top, in embodiment, heat insulating open riser 3 is of a size of Φ 300 × 600mm;
1.5) arrange two place's chills in air rubber capsule shell 1 open end, the outer ring chill 1 of to be whole circle chill 26, place, δ=40mm bottom surface be at place δ=30mm height 70mm, arranges reasonable clearance;
1.6) two-layer cast runner 4 is installed, lower floor is the twice ingate (actual with arrow signal in Fig. 4 is 2 roads) of Φ 50mm, upper strata is the ingate that Φ 70mm leads directly to heat insulating open riser 3, and vertical main running channel is Φ 70mm, and the duration of pouring is 55 ~ 70s;
1.7) draw craft drawing;
Step 2, enforcement casting:
2.1) by the art work sheet determined, make the entity apperance 16 of air rubber capsule shell 1, make the wood core box of spherical ball core and core print 7 simultaneously;
2.2) by art work sheet, by entity apperance 16, heat insulating open riser 3, chill 1, chill 26 and the cast runner 4 difference moulding in drag box 12 and cope 15 made, moulding sand adopts alkali phenol resin sand, should by molding sand 13 tamping during moulding, the normal temperature compression strength detecting molding sand 13 should be greater than 2.0MPa, after molding sand 13 self-hardening, take out entity apperance 16 and form die cavity;
2.3) by art work sheet, make spheroid core and core print 7, first process core skeleton 8, arbor mobile jib adopts Φ 40mm steel pipe, arbor welds by art work sheet status requirement the fixed bar 10 that Φ 40mm annulus is used for installing core, on arbor, use the reinforcement welding many places reinforced support of Φ 8mm to increase the intensity of core according to the shape of core box again, on arbor mobile jib, straw rope is wound around before coremaking, put exhaust rope unobstructed to ensure core steam vent 11, during coremaking, ready-made arbor will be placed correct position in core box;
2.4) stenciling coating, adopts manual brushing, uses the zirconium English powder alcohol ready-made die cavity of quick drying paint brushing and spheroid core and core print 7 that cast steel resin sand is conventional, brushes 3 ~ 4 times;
2.5) mould assembling, the fixed bar 10 making the carbon steel material of a Φ 20mm according to art work sheet is in advance for subsequent use, first the steam vent of the molding sand 13 after sclerosis to be cleaned out during lower core, with joint sealing mud bar, steam vent 11 is fixed on core apertures circle interior, 4 circles are wound around again at spheroid core and core print 7 core print outer wall place asbestos cord, then the spheroid core made and core print 7 are placed in the die cavity made, with fixed bar 10, core is fixed with bolt on drag box 12 end after mixing up position, clean out the residual sand of die cavity, finally fasten cope 15 and fix reliable;
2.6) sand mold baking, before cast, use air-heater to dry in molding sand 13 after mould assembling, air-heater temperature controls at 150 DEG C, until terminate during cast to dry;
2.7) pour into a mould, pouring temperature controls at 1570 DEG C ~ 1590 DEG C, control the duration of pouring at 1 minute, first molten steel is injected, first quick and back slow, when waiting molten steel to rise to heat insulating open riser 3 about 1/3 ~ 1/2 At The Height from the upper end cup of cast runner 4 during cast, stop cast, in heat insulating open riser 3, add heat preserving agent, change into and pouring into a mould from heat insulating open riser 3, water full after hole irrigation 2 ~ 3 times again;
2.8) unpack, within after cast 35 ~ 40 hours, unpack, adopt shake-out, remove clean by the scab of air rubber capsule shell 1 surface and inwall, cut heat insulating open riser 3 and cast runner 4 while hot, during cutting, temperature controls at 200 DEG C ~ 250 DEG C;
2.9) sandblasting, carries out sandblasting to air rubber capsule shell 1;
2.10) polishing and reparation;
2.11) normalized treatment, carries out high temperature normalizing process to air rubber capsule shell 1, and normalizing temperature controls at 900 DEG C ~ 930 DEG C, and time controling is 5 ~ 6 hours;
2.12) secondary sandblasting, carries out secondary sandblasting to air rubber capsule shell 1.
In subsequent technique, magnetic powder inspection is carried out to blank, if qualified, send library storage, if defective, according to circumstances repair.
In the step that the inventive method is above-mentioned, have following some pay particular attention to:
1) utilize solidification simulation CAE software carry out process optimization setting and verified by actual production, the air rubber capsule shell 1 outer surface allowance of reasonable, to realize the object of consecutive solidification.
2) chill of two kinds of different sizes is set in the open end of air rubber capsule shell 1, reaches suitable chill effect.
3) higher heat insulating open riser 3 is adopted to reach the effect increasing pressure head;
4) adopt two-layer ladder running channel, lower floor uses twice to twitch one's mouth duck mouth pipe brick, and upper strata adopts connector bend brick to lead to rising head.During cast, pouring temperature controls at 1570 DEG C ~ 1590 DEG C, control the duration of pouring at about 1 minute, first inject molten steel, first quick and back slow, when molten steel rises to heat insulating open riser 3 about 1/3 ~ 1/2 At The Height from the upper end cup of cast runner 4, stop cast, in heat insulating open riser 3, add heat preserving agent, change into and pouring into a mould from heat insulating open riser 3, water full after hole irrigation 2 ~ 3 times again;
5) during coremaking spheroid core and core print 7 heart portion use straw rope with alleviate core weight and reach be beneficial to cast after core have good deformability and venting quality, reduce blank defect.
6) adopt alkali phenolic resins sand molding process, this resin sand heat-insulating property is good, foundry goods and rising head can be made to be in liquid high temperature state for a long time, can reach good feeding effect, to form compact tissue.
Embodiment
Make KB-75 air rubber capsule shell, figure number AK753501-0301B1.
The test first stage produces a collection of totally 5, serial number 1301X, 1302X, 1303X, 1304X, 1305X, wherein 1304X, 1305X two pieces is dissected, inner surface carries out magnetic and ultrasonic examination, flaw detection report number: BOMCO J69-MT-BE027-1306, BOMCOJ68-UT-BE018-1306 result of detection: all qualified.And metallographic structure is tested, heat-treated sturcture is: tempered sorbite+upper bainite, grain size: 8 grades; Cast sturcture: pearlite+ferrite net+granular ferrite, grain size is greater than 1 grade, and it is all qualified that field trash A1.5, D1.0. all the other 3 detects a flaw after processing.
In test second stage, produce totally 180, KB-75 air rubber capsule shell, processing survives a flaw detection qualification rate and reaches 99%, and water filling static pressure test qualification rate 100%, reaches expection and arrange requirement.
Visible, the pressure-bearing mud pump air incrustation foundry goods that the inventive method makes, inner wall size precision reaches and arranges requirement, without the need to carrying out machining, solving the problem of inwall processing difficulties, saving production cost, can replace forging air rubber capsule shell completely.
Claims (6)
1. a pressure-bearing casting method for mud pump air incrustation, is characterized in that, implements according to following steps:
Step 1, technique are arranged
1.1) the somatotype scheme of the large mouth down of air rubber capsule shell (1) is selected;
1.2) according to the structure of air rubber capsule shell (1), setting is optimized to the allowance layer (2) of air rubber capsule shell (1) spherical outside surface;
1.3) make spheroid core and the core print (7) of air rubber capsule shell (1) inner chamber, core material selects alkali phenol resin sand, makes corresponding fixed bar (10) simultaneously;
1.4) heat insulating open riser (3) is set on air rubber capsule shell (1) top;
1.5) arrange two place's chills in air rubber capsule shell (1) open end, a place is chill two (6), and a place is chill one (5), and arranges reasonable clearance;
1.6) two-layer cast runner (4) is installed;
1.7) draw craft drawing;
Step 2, enforcement casting
2.1) by art work sheet, make the entity apperance (16) of air rubber capsule shell (1), make the wood core box of spherical ball core and core print (7) simultaneously;
2.2) by art work sheet, the entity apperance (16) made, heat insulating open riser (3), chill one (5), chill two (6) and cast runner (4) are distinguished moulding in drag box (12) and cope (15), moulding sand adopts alkali phenol resin sand, should by molding sand (13) tamping during moulding, the normal temperature compression strength detecting molding sand (13) should be greater than 2.0MPa, after molding sand (13) self-hardening, take out entity apperance (16) and form die cavity;
2.3) by art work sheet, make spheroid core and core print (7), first process core skeleton (8), arbor mobile jib adopts steel pipe, arbor welds by art work sheet status requirement the fixed bar (10) that annulus is used for installing core, on arbor, reinforcement welding many places reinforced support is used again according to the shape of core box, on arbor mobile jib, straw rope is wound around before coremaking, put exhaust rope unobstructed to ensure core steam vent (11), during coremaking, ready-made arbor will be placed correct position in core box;
2.4) stenciling coating, brushes ready-made die cavity and spheroid core and core print (7);
2.5) mould assembling;
2.6) sand mold baking, dries molding sand (13) before cast, until terminate during cast to dry;
2.7) pour into a mould;
2.8) unpack;
2.9) sandblasting, carries out sandblasting to air rubber capsule shell (1);
2.10) polishing and reparation;
2.11) normalized treatment, carries out high temperature normalizing process to air rubber capsule shell (1), and normalizing temperature controls at 900 DEG C ~ 930 DEG C, and time controling is 5 ~ 6 hours;
2.12) secondary sandblasting, carries out secondary sandblasting to air rubber capsule shell (1).
2. the casting method of pressure-bearing mud pump air incrustation according to claim 1, it is characterized in that: described cast runner (4) is for two-layer, comprise vertical main running channel, lower floor is twice ingate, and upper strata is the ingate of straight-through heat insulating open riser (3).
3. the casting method of pressure-bearing mud pump air incrustation according to claim 1, it is characterized in that: described step 2.5) in, a fixed bar (10) is made in advance for subsequent use according to art work sheet, first the steam vent of the molding sand (13) after sclerosis to be cleaned out during lower core, with joint sealing mud bar, steam vent (11) is fixed on core apertures circle interior, 4 circles are wound around again at spheroid core and core print (7) core print outer wall place asbestos cord, then the spheroid core made and core print (7) are placed in the die cavity made, with fixed bar (10), core is fixing on drag box (12) end after mixing up position, clean out the residual sand of die cavity, finally fasten cope (15) and fix reliable.
4. the casting method of pressure-bearing mud pump air incrustation according to claim 1, it is characterized in that: described step 2.7) in, pouring temperature controls at 1570 DEG C ~ 1590 DEG C, control the duration of pouring at 1 minute, upper end cup first from cast runner (4) during cast injects molten steel, first quick and back slow, when rising to heat insulating open riser (3) height 1/3 ~ 1/2 place Deng molten steel, stop cast, heat preserving agent is added in heat insulating open riser (3), change into from heat insulating open riser (3) cast, water full after hole irrigation 2 ~ 3 times again.
5. the casting method of pressure-bearing mud pump air incrustation according to claim 1, it is characterized in that: described step 2.8) in, within after cast 35 ~ 40 hours, unpack, shake-out, cut heat insulating open riser (3) and cast runner (4) while hot, during cutting, temperature controls at 200 DEG C ~ 250 DEG C.
6. the casting method of pressure-bearing mud pump air incrustation according to claim 1, it is characterized in that: described chill one (5) is arranged along entity apperance (16) openend periphery, and chill two (6) is arranged along openend lower surface.
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Cited By (14)
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|---|---|---|---|---|
| CN105537530A (en) * | 2015-12-27 | 2016-05-04 | 无锡市灵通铸造有限公司 | Sand core good in breathability and manufacturing method of sand core |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201823891U (en) * | 2010-09-07 | 2011-05-11 | 江苏金石铸锻有限公司 | Air case |
| CN102921899A (en) * | 2012-10-23 | 2013-02-13 | 宝鸡石油机械有限责任公司 | Method for casting U-shaped lifting ring steel casting |
| JP2013233550A (en) * | 2012-05-07 | 2013-11-21 | Hazu Kogyo Kk | Sand mold manufacturing method of mold |
| CN103506580A (en) * | 2013-10-30 | 2014-01-15 | 宜昌船舶柴油机有限公司 | Casting method for large thin-wall valve body steel casting |
| CN103624218A (en) * | 2013-10-25 | 2014-03-12 | 宝鸡石油机械有限责任公司 | Casting method of hollow crankshaft of slurry pump |
| CN203830624U (en) * | 2014-05-12 | 2014-09-17 | 莱芜锻压有限公司 | Forging die for mud pump air bag blank |
-
2015
- 2015-03-13 CN CN201510112026.XA patent/CN104722718B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201823891U (en) * | 2010-09-07 | 2011-05-11 | 江苏金石铸锻有限公司 | Air case |
| JP2013233550A (en) * | 2012-05-07 | 2013-11-21 | Hazu Kogyo Kk | Sand mold manufacturing method of mold |
| CN102921899A (en) * | 2012-10-23 | 2013-02-13 | 宝鸡石油机械有限责任公司 | Method for casting U-shaped lifting ring steel casting |
| CN103624218A (en) * | 2013-10-25 | 2014-03-12 | 宝鸡石油机械有限责任公司 | Casting method of hollow crankshaft of slurry pump |
| CN103506580A (en) * | 2013-10-30 | 2014-01-15 | 宜昌船舶柴油机有限公司 | Casting method for large thin-wall valve body steel casting |
| CN203830624U (en) * | 2014-05-12 | 2014-09-17 | 莱芜锻压有限公司 | Forging die for mud pump air bag blank |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537530A (en) * | 2015-12-27 | 2016-05-04 | 无锡市灵通铸造有限公司 | Sand core good in breathability and manufacturing method of sand core |
| CN106363129A (en) * | 2016-08-31 | 2017-02-01 | 共享铸钢有限公司 | Casting technique of supporting frame for building |
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| CN110732635A (en) * | 2019-10-17 | 2020-01-31 | 张家港市华泰泵阀制造有限公司 | Casting method of wood chip pump lining plate |
| CN110732635B (en) * | 2019-10-17 | 2021-07-13 | 张家港市华泰泵阀制造有限公司 | Casting method of wood chip pump lining plate |
| CN112170785A (en) * | 2020-08-25 | 2021-01-05 | 常熟市虹桥铸钢有限公司 | Casting method of hub reduction gear frame |
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| CN113458330A (en) * | 2021-07-02 | 2021-10-01 | 安徽合力股份有限公司合肥铸锻厂 | Large-scale guide pump casing casting system |
| CN116786765A (en) * | 2023-03-14 | 2023-09-22 | 湖州中联机械制造有限公司 | Mud core structure and preparation method thereof |
| CN116786765B (en) * | 2023-03-14 | 2024-03-19 | 湖州中联机械制造有限公司 | Mud core structure and preparation method thereof |
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