CN105839148A - Manufacturing method for large nuclear power steel casting pattern - Google Patents
Manufacturing method for large nuclear power steel casting pattern Download PDFInfo
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- CN105839148A CN105839148A CN201610294642.6A CN201610294642A CN105839148A CN 105839148 A CN105839148 A CN 105839148A CN 201610294642 A CN201610294642 A CN 201610294642A CN 105839148 A CN105839148 A CN 105839148A
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- apperance
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
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Abstract
The invention relates to a manufacturing method for a large nuclear power steel casting pattern in the technical field of casting. A pattern digifax of a steel casting is built through three-dimensional drawing software, and is partitioned into a plurality of curved-surface patterns and a planar pattern according to structural characteristics. The curved-surface patterns are used for forming the curved-surface outline of the steel casting. The planar pattern is located in the center surrounded by the curved-surface patterns and used for supporting and fixing the curved-surface patterns. The curved-surface patterns are of an evanescent mode structure. The planar pattern is of a wood mode structure. The planar pattern and the curved-surface patterns are manufactured according to sizes. The planar pattern is of a wood framework structure. The curved-surface patterns are made of evanescent mode foam materials with the sealing degree of 35-40 kg/m<3>. The planar pattern and the curved-surface patterns are then combined, and other positions of the combined surfaces are bonded firmly. Finally, pattern size detection and reworking, and surface treatment are carried out. By means of the manufacturing method for the large nuclear power steel casting pattern, the manufacturing cost of the large nuclear power steel casting pattern is greatly reduced, the production period of the large nuclear power steel casting pattern is greatly shortened, and the size precision of the patterns is improved.
Description
Technical field
The present invention relates to casting technology field, particularly to the manufacture method of a kind of large nuclear-power steel-casting apperance.
Background technology
There is a kind of large nuclear-power steel-casting product, its inlet end and exhaust end portion structure are more complicated, there is molding back draught position, die modeling cannot be made by cast shape full pattern, outer modeling+core box must be used to make the method moulding of core, every kind of product is all fabricated separately apperance, and apperance entirety timber is banked up and formed, and shape and structure is as shown in Figure 1.The manufacture method of this apperance 1 is for large nuclear-power steel-casting product, and apperance cost accounts for the 20% of whole castings production cost, is greatly improved the manufacturing cost of foundry goods.Meanwhile, in actual production, owing to large nuclear-power steel-casting apperance wooden die size is bigger than normal, complex manufacturing process, fabrication cycle have up to more than 50 days, account for more than 1/3rd of the foundry goods delivery cycle, have a strong impact on pay punctuality.
Summary of the invention
The present invention is directed to the manufacture method that the cost that in prior art, baroque large nuclear-power steel-casting apperance manufacture method exists is high, cycle length problem provides a kind of large nuclear-power steel-casting apperance, to alleviate above-mentioned contradiction.
The object of the present invention is achieved like this, the manufacture method of a kind of large nuclear-power steel-casting apperance, it is characterised in that comprise the steps:
1) three-dimensional drawing software is utilized to set up the apperance digital-to-analogue of large nuclear-power steel-casting, the front end of described apperance digital-to-analogue, rear end and be laterally respectively arranged with location core print；
2) described apperance digital-to-analogue is carried out piecemeal process according to architectural feature, it is divided into several curved surface apperances and the plane apperance with the splicing of curved surface apperance, described curved surface apperance is for forming the curved surface outline of steel-casting, and described plane apperance is positioned at center that curved surface apperance surrounds for supporting and fix each curved surface apperance；Described curved surface apperance is evaporative pattern structure, and described plane apperance is wood model structure；
3) making plane apperance and curved surface apperance: described plane apperance is wood frame structure, including surrounding some frame plates of case structure, inside described frame plate, fixed arrangement has some reinforcement lumps of wood, is longitudinally evenly equipped with some reinforcing plates between the frame plate of opposite face；Described curved surface apperance uses tightness to be 35 40kg/m3Evaporative pattern foamed materials is made；The surface that described plane apperance is connected with curved surface apperance is provided with setting-in or the clamping structure being easy to location；
4) combined planar apperance and curved surface apperance, coordinates described plane apperance with assembling with curved surface apperance, makes plane apperance coordinate setting-in or card dress with the faying face of curved surface apperance, and by bonding firmly for other position of faying face；
5) apperance size detection is reprocessed, surface processes.
The apperance manufacture method of the present invention, size according to large-scale steel-casting and construction features, apperance carries out point mould process, planar section is fabricated separately with curvature portion, planar section simple shape, directly make by hand, and use frame-type splicing structure, be greatly saved apperance cost of manufacture and simplify processing technology；And curvature portion is complex-shaped, for forming the outline of steel-casting, high to processing method and dimension precision requirement, use evaporative pattern foamed materials to make and can be substantially reduced cost of manufacture and simplify processing technology, and advantageously ensure that the dimensional accuracy of evaporative pattern, shorten the production cycle that apperance makes.
Fabrication and installation for ease of plane apperance, in described plane apperance, the junction between each frame plate, reinforcing plate and the reinforcement lumps of wood connects by Embedded tap bolt is fixing, the reinforcement lumps of wood lap-joint arranged inside described reinforcing plate end and frame plate is provided with square bayonet socket, and the faying face of each connector is reinforced by viscose glue.
For simplifying the processing technology of curved surface apperance further, described curved surface apperance is divided into some loose piece submodule samples be easy to and make according to the size of size, each loose piece submodule sample makes assembling combination after shaping and forms, and each lug pattern is provided with point mould negative of 1-1.5mm along the vertical direction in each assembled face.
For improving intensity and the installation accuracy of curved surface apperance further, the locating surface positioning core print in described curved surface apperance is embedded with wooden anti-deformation termination.
For improving the dimensional accuracy of curved surface apperance, described curved surface apperance is processed by Digit Control Machine Tool by evaporative pattern foam block.In the method for the present invention, the curved surface apperance evaporative pattern bubble end block being used for ensureing casting dimension accuracy is processed by Digit Control Machine Tool, not only can ensure that apperance dimensional accuracy, and reduce apperance manufacture difficulty, improve apperance make efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art medium-and-large-sized nuclear power steel-casting wooden model.
Fig. 2 is the steel-casting apperance digital-to-analogue drawn in the manufacture method of the large nuclear-power steel-casting apperance of the present invention.
Fig. 3 be the present invention method in fill steel-casting apperance divide mould to become plane apperance and the schematic diagram of Qu Pingmo sample.
Fig. 4 is the internal structure schematic diagram of plane apperance.
Fig. 5 is reinforcing plate and the structural representation of frame plate connection member in plane apperance.
Fig. 6 be plane apperance complete schematic diagram.
The schematic diagram being divided into loose piece submodule sample of Fig. 7 curved surface apperance.
Fig. 8 curved surface apperance and the assembling schematic diagram of plane apperance.
Fig. 9 curved surface apperance and the assembling schematic diagram of plane another angle of apperance.
Figure 10 is the structural representation of anti-deformation termination.
Detailed description of the invention
The method describing the present invention below in conjunction with the accompanying drawings in detail.
Such as Fig. 2 Figure 10, the manufacture method of the large nuclear-power steel-casting apperance of the present invention, the apperance digital-to-analogue of large nuclear-power steel-casting is set up first with three-dimensional drawing software, as in figure 2 it is shown, the front end of this apperance digital-to-analogue, rear end and be laterally respectively arranged with that locating core is first 2, location core print 23 and location core print 34.
Above-mentioned apperance digital-to-analogue is carried out piecemeal process according to architectural feature, as shown in Figure 3, it is divided into several curved surface apperances and the plane apperance 5 with the splicing of curved surface apperance, curved surface apperance is for forming the curved surface outline of steel-casting, and plane apperance 5 is positioned at center that curved surface apperance surrounds for supporting and fix each curved surface apperance；Curved surface apperance is evaporative pattern structure, and plane apperance 5 is wood model structure；The curved surface apperance of the present embodiment is divided into the curved surface apperance 3 602 at the curved surface apperance 1 of two sides, curved surface apperance 2 603 and top.
Make plane apperance and curved surface apperance: plane apperance 5 is wood frame structure as shown in Fig. 4 Fig. 6, including the some frame plates 501 surrounding case structure, inside frame plate 501, fixed arrangement has some reinforcement lumps of wood 502, is longitudinally evenly equipped with some reinforcing plates 503 between the frame plate of opposite face；Curved surface apperance uses tightness to be 35 40kg/m3Evaporative pattern foamed materials is made.In the present embodiment, for improving the dimensional accuracy of curved surface apperance, curved surface apperance is processed by Digit Control Machine Tool by evaporative pattern foam block, not only can ensure that apperance dimensional accuracy, and reduces apperance manufacture difficulty, improves apperance make efficiency.
For ease of location and installation, the surface that plane apperance is connected with curved surface apperance is provided with setting-in or the clamping structure being easy to location.As shown in Figure 6, the some positioning boss of surface configuration 504 of flat bent apperance 5, the corresponding position of curved surface apperance is respectively cooperating with being provided with groove；Construction features according to casting form, in the present embodiment, plane apperance 5 is designed directly to embedding structure with the face that coordinates of curved surface apperance 1, in curved surface apperance 1 coordinates the groove being inlaid in plane apperance correspondence surface, and is amplexiformed firmly by cooperation face viscose glue.
For ease of the fabrication and installation of plane apperance, in the plane apperance 5 of the present embodiment, each frame plate 501, reinforcing plate 503 and the junction strengthened between the lumps of wood 502 connect by Embedded tap bolt is fixing.Such as Fig. 4, the reinforcement lumps of wood 502 lap-joint arranged inside reinforcing plate 503 end with frame plate 501 is provided with square bayonet socket 503A, and the faying face of each connector is reinforced by viscose glue.
For simplifying the processing technology of curved surface apperance further, curved surface apperance is divided into some loose piece submodule samples be easy to and make according to the size of size, each loose piece submodule sample makes assembling combination after shaping and forms, and each lug pattern is provided with point mould negative of 1-1.5mm along the vertical direction in each assembled face.In the present embodiment, as shown in Figure 7, size is bigger, baroque curved surface apperance 2 602 is divided into four loose piece submodule samples, it is respectively loose piece submodule sample one 602A, loose piece submodule sample two 602B, loose piece submodule sample three 602C, loose piece submodule sample four 602D, four activity apperances are provided with point mould negative of 1-1.5mm along the vertical direction in each assembled face, to offset assembled error.
For improving intensity and the installation accuracy of curved surface apperance further, it is embedded with wooden anti-deformation termination 7 at the locating surface of the location core print at curved surface apperance two ends, as shown in Figure 10, this wooden anti-deformation termination 7 is also fixedly connected with fixing bar 8, and anti-deformation termination 7 this fixing bar 8 after core print surface setting-in puts in place runs through inside insertion curved die with fixing anti-deformation termination 7.
After making above-mentioned plane apperance and curved surface apperance, carry out plane apperance and the combination of curved surface apperance, as shown in Figure 8 and Figure 9, plane apperance 5 is coordinated assembling with each curved surface apperance, plane apperance is made to coordinate setting-in or card dress with the faying face of curved surface apperance, and by bonding firmly for other position of faying face.
Finally, the detection carrying out apperance size is reprocessed, surface processes, until apperance is of the required size.
The apperance manufacture method of the present invention, size according to large-scale steel-casting and construction features, apperance carries out point mould process, planar section is fabricated separately with curvature portion, planar section simple shape, directly make by hand, and use frame-type splicing structure, be greatly saved apperance cost of manufacture and simplify processing technology；And curvature portion is complex-shaped, for forming the outline of steel-casting, high to processing method and dimension precision requirement, evaporative pattern foam block is used accurately to be processed by Digit Control Machine Tool, cost of manufacture can be substantially reduced and simplify processing technology, and advantageously ensure that the dimensional accuracy of evaporative pattern, shorten the production cycle that apperance makes.
Claims (5)
1. the manufacture method of a large nuclear-power steel-casting apperance, it is characterised in that comprise the steps:
1) three-dimensional drawing software is utilized to set up the apperance digital-to-analogue of large nuclear-power steel-casting, the front end of described apperance digital-to-analogue, rear end and be laterally respectively arranged with location core print；
2) described apperance digital-to-analogue is carried out piecemeal process according to architectural feature, it is divided into several curved surface apperances and the plane apperance with the splicing of curved surface apperance, described curved surface apperance is for forming the curved surface outline of steel-casting, and described plane apperance is positioned at center that curved surface apperance surrounds for supporting and fix each curved surface apperance；Described curved surface apperance is evaporative pattern structure, and described plane apperance is wood model structure；
3) making plane apperance and curved surface apperance: described plane apperance is wood frame structure, including surrounding some frame plates of case structure, inside described frame plate, fixed arrangement has some reinforcement lumps of wood, is longitudinally evenly equipped with some reinforcing plates between the frame plate of opposite face；Described curved surface apperance uses tightness to be 35 40kg/m3Evaporative pattern foamed materials is made；The surface that described plane apperance is connected with curved surface apperance is provided with setting-in or the clamping structure being easy to location；
4) combined planar apperance and curved surface apperance, coordinates described plane apperance with assembling with curved surface apperance, makes plane apperance coordinate setting-in or card dress with the faying face of curved surface apperance, and by bonding firmly for other position of faying face；
5) apperance size detection is reprocessed, surface processes.
The manufacture method of large nuclear-power steel-casting apperance the most according to claim 1, it is characterized in that, in described plane apperance, the junction between each frame plate, reinforcing plate and the reinforcement lumps of wood connects by Embedded tap bolt is fixing, the reinforcement lumps of wood lap-joint arranged inside described reinforcing plate end and frame plate is provided with square bayonet socket, and the faying face of each connector is reinforced by viscose glue.
The manufacture method of large nuclear-power steel-casting apperance the most according to claim 1, it is characterized in that, described curved surface apperance is divided into some loose piece submodule samples be easy to and make according to the size of size, each loose piece submodule sample makes assembling combination after shaping and forms, and each lug pattern is provided with point mould negative of 1-1.5mm along the vertical direction in each assembled face.
The manufacture method of large nuclear-power steel-casting apperance the most according to claim 1, it is characterised in that the locating surface positioning core print in described curved surface apperance is embedded with wooden anti-deformation termination.
The manufacture method of large nuclear-power steel-casting apperance the most according to claim 1, it is characterised in that described curved surface apperance is processed by Digit Control Machine Tool by evaporative pattern foam block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294642.6A CN105839148A (en) | 2016-05-06 | 2016-05-06 | Manufacturing method for large nuclear power steel casting pattern |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610294642.6A CN105839148A (en) | 2016-05-06 | 2016-05-06 | Manufacturing method for large nuclear power steel casting pattern |
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| CN201610294642.6A Pending CN105839148A (en) | 2016-05-06 | 2016-05-06 | Manufacturing method for large nuclear power steel casting pattern |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109550891A (en) * | 2017-09-25 | 2019-04-02 | 高淳县龙宁精密铸造有限公司 | A kind of lathe bed evaporative pattern and its method for pouring lathe bed |
| CN112846680A (en) * | 2021-02-20 | 2021-05-28 | 洛阳佳会机械科技有限公司 | Manufacturing method of variable multi-purpose mould for foam plastic molding and foam plastic molding process |
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| CN102211146A (en) * | 2011-05-23 | 2011-10-12 | 大连金河铸造有限公司 | Combined mold for extra-large casting and forging |
| CN104162635A (en) * | 2014-08-05 | 2014-11-26 | 宁夏共享铸钢有限公司 | Making method of steel casting mould of steam turbine |
| CN105382203A (en) * | 2015-10-29 | 2016-03-09 | 共享铸钢有限公司 | Novel casting method for steam turbine valve shell casting |
| CN105458173A (en) * | 2015-12-28 | 2016-04-06 | 共享铸钢有限公司 | Molding method for air cylinder casting of steam turbine |
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2016
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Patent Citations (5)
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| CN101898230A (en) * | 2010-08-09 | 2010-12-01 | 江苏吉鑫风能科技股份有限公司 | Casting die for 5MW and above large-scale wind power components |
| CN102211146A (en) * | 2011-05-23 | 2011-10-12 | 大连金河铸造有限公司 | Combined mold for extra-large casting and forging |
| CN104162635A (en) * | 2014-08-05 | 2014-11-26 | 宁夏共享铸钢有限公司 | Making method of steel casting mould of steam turbine |
| CN105382203A (en) * | 2015-10-29 | 2016-03-09 | 共享铸钢有限公司 | Novel casting method for steam turbine valve shell casting |
| CN105458173A (en) * | 2015-12-28 | 2016-04-06 | 共享铸钢有限公司 | Molding method for air cylinder casting of steam turbine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109550891A (en) * | 2017-09-25 | 2019-04-02 | 高淳县龙宁精密铸造有限公司 | A kind of lathe bed evaporative pattern and its method for pouring lathe bed |
| CN112846680A (en) * | 2021-02-20 | 2021-05-28 | 洛阳佳会机械科技有限公司 | Manufacturing method of variable multi-purpose mould for foam plastic molding and foam plastic molding process |
| CN112846680B (en) * | 2021-02-20 | 2023-08-29 | 洛阳佳会机械科技有限公司 | Manufacturing method of foam plastic molding variable multipurpose mold and foam plastic molding process |
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Application publication date: 20160810 |