CN105033175A - Core shooting core box for producing rod-shaped sand cores - Google Patents
Core shooting core box for producing rod-shaped sand cores Download PDFInfo
- Publication number
- CN105033175A CN105033175A CN201510480727.9A CN201510480727A CN105033175A CN 105033175 A CN105033175 A CN 105033175A CN 201510480727 A CN201510480727 A CN 201510480727A CN 105033175 A CN105033175 A CN 105033175A
- Authority
- CN
- China
- Prior art keywords
- core
- box
- shooting
- clavate
- core box
- 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.)
- Granted
Links
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Disclosed is a core shooting core box for producing rod-shaped sand cores. The core shooting core box comprises an upper core shooting core box and a lower core shooting core box which are subjected to mold splitting along the horizontal mold splitting face, sand shooting nozzles arranged at the top of the upper core shooting core box, exhaust holes formed in the bottom of the lower core shooting core box, sand core grooves extending towards the insides of the upper core shooting core box and the lower core shooting core box along the horizontal mold splitting face, mounting grooves and rod-shaped sand core boxes arranged in the mounting grooves. The mounting grooves extend towards the insides of the upper core shooting core box and the lower core shooting core box along the horizontal mold splitting face. The core shooting process that the rod-shaped sand core boxes are embedded in the core shooting core box is adopted for producing cores. The rod-shaped sand core boxes are of a horizontal mold splitting structure, and the rod-shaped sand core boxes are arranged vertically in the core shooting core box to be matched with the sand shooting nozzles and the exhaust holes. Compared with the prior art, the core shooting core box has the advantages that rod-shaped sand cores can be shot solidly, and accordingly the rod-shaped sand cores which are complete in size and sufficient in strength can be obtained.
Description
Technical field
The present invention relates to core shooting core-making technique field in sand casting, particularly relate to a kind of core shooting core box producing clavate core.
Background technology
In casting industry, for the foundry goods produced in enormous quantities, the core for the production of such foundry goods often selects core shooter to carry out coremaking, and speed of production is fast, core dimensionally stable, intensity high to utilize core shooter coremaking to possess.
Core shooting for clavate core is produced, during its Core Box, usually with the maximum cross-section place of excellent core sand core for a point core face, the layout type of this kind of core in core shooting core box is horizontal layout, the die joint of core shooting core box is consistent with point core face of excellent core sand core, along die joint, core shooting core box is divided into top core shooting core box and bottom core shooting core box, in the core shooting core box of bottom, the below of corresponding excellent cored structure evenly arranges plunger tip bar, in the core shooting core box of top, two ends of corresponding excellent cored structure are provided with and penetrate sand mouth group, this core layout type is convenient to the dismounting of core shooting core box, core shooting speed is fast, utilize plunger tip bar very convenient when playing core.But the layout type of this core ubiquity in core shooting process is penetrated sand and to be discontented with or to penetrate sand unreal and cause the technological deficiency that excellent core is scrapped.
Summary of the invention
Be necessary to propose a kind of core shooting core box can penetrating the production clavate core of real clavate core.
A kind of core shooting core box producing clavate core, the core shooting core box of described production clavate core comprises top core shooting core box along horizontal parting face parting and bottom core shooting core box, and be arranged on top core shooting core case top and corresponding with the core core chamber quantity in the core shooting core box of production clavate core penetrate sand mouth group, be arranged on bottom the core shooting core box of bottom and corresponding with the core core chamber quantity in the core shooting core box of production clavate core steam vent group, along the core groove that horizontal parting extends to form towards described top core shooting core box and bottom core shooting core box interior, by described top core shooting core box and bottom core shooting core box along horizontal parting face matched moulds, the core groove of described top core shooting core box and the core groove of described bottom core shooting core box form core core chamber, described sand mouth group of penetrating communicates with the core groove of top core shooting core box, core core chamber is entered from penetrating sand mouth group to make core sand, described steam vent group communicates with the core groove of bottom core shooting core box, to form the exhaust passage in core core chamber, described top core shooting core box is also provided with top locating slot, described bottom core shooting core box also arranges bottom locating slot, top locating slot and bottom locating slot face, described sand mouth group of penetrating is communicated with top locating slot, described steam vent group is communicated with bottom locating slot, top locating slot and bottom locating slot form mounting groove, the size of mounting groove and the size of described clavate core core box match, what described clavate core core box was vertical is arranged in mounting groove, core core chamber in described clavate core core box is that vertical direction is arranged, the sand inlet at the top of described clavate core core box with penetrate sand mouth group just to and be communicated with, the gas outlet of the bottom of described clavate core core box and described steam vent group just to and be communicated with.
The reserved mounting groove of clavate core core box and the core groove of other multiple cores in core shooting core box of the present invention, employing clavate core core box is nested in the core shooting technique coremaking in core shooting core box, clavate core core box structure is horizontal parting, but in core shooting core box, adopt vertical mode layout of placing, coordinate the design of penetrating sand mouth group and steam vent group, compared to the prior art, real clavate core can be penetrated, obtain the clavate core that size is complete, intensity is enough.
Accompanying drawing explanation
Fig. 1 is the structural representation of the core shooting core box of production clavate core.
Fig. 2 is the structural representation of the top core shooting core box of the core shooting core box of production clavate core.
Fig. 3 is the structural representation of the bottom core shooting core box of the core shooting core box of production clavate core.
Fig. 4 is the structural representation of clavate core core box of the present invention.
Fig. 5 is the scheme of installation of clavate core core box in the core shooting core box of bottom.
Fig. 6 is the layout structure schematic diagram of clavate core in clavate core core box of the present invention.
Fig. 7 is the layout structure schematic diagram of clavate core in prior art.
In figure: the core shooting core box 1 of production clavate core, top core shooting core box 10, top locating slot 101, penetrate the core core chamber 407 of sand mouth group 102, bottom core shooting core box 20, bottom locating slot 201, steam vent group 202, plunger tip bar 203, core groove 30, clavate core core box 40, first core core box 401, second core core box 402, sand inlet 403, " people " font passage 404, gas outlet 405, screw rod clamping slot 406, clavate core core box.
Detailed description of the invention
In order to clearly demonstrate technical scheme of the present invention, further illustrate below in conjunction with accompanying drawing.
See Fig. 1 to Fig. 6, the core shooting core box 1 of production clavate core comprises top core shooting core box 10 along horizontal parting face parting and bottom core shooting core box 20, and be arranged on core shooting core box 10 top, top and corresponding with the core core chamber quantity in the core shooting core box of production clavate core penetrate sand mouth group 102, be arranged on bottom bottom core shooting core box 20 and corresponding with the core core chamber quantity in the core shooting core box of production clavate core steam vent group 202, along the core groove 30 that horizontal parting extends to form towards top core shooting core box 10 and core shooting core box 20 inside, bottom, sand mouth group that what the core core chamber of such as one pre-prepared core was corresponding penetrate can comprise one or morely penetrates Sha Zui, smooth to ensure core sand, enter core core chamber fully, the steam vent group that the core core chamber of a pre-prepared core is corresponding can comprise one or more steam vent, quick to ensure the air in sandbox core chamber, direct discharge, by top core shooting core box 10 with bottom core shooting core box 20 along horizontal parting face matched moulds, the core groove 30 of top core shooting core box 10 forms core core chamber with the core groove 30 of bottom core shooting core box 20, penetrate sand mouth group 102 to communicate with the core groove 30 of top core shooting core box 10, core core chamber is entered from penetrating sand mouth group 102 to make core sand, steam vent group 202 communicates with the core groove 30 of bottom core shooting core box 20, to form the exhaust passage in core core chamber, also comprise the mounting groove that bottom locating slot 201 that the top locating slot 101 that extends to form towards core shooting core box 10 inside, top along horizontal parting and lower portion core shooting core box 20 inside extends to form forms and the clavate core core box 40 be arranged in mounting groove, top locating slot 101 and bottom locating slot 201 face, the top of the top core shooting core box 10 that top locating slot 101 is just right is arranged penetrates sand mouth group 102, penetrate sand mouth group 102 to be communicated with top locating slot 101, clavate core core box 40 is entered from penetrating sand mouth group 102 to make core sand, the bottom of the bottom core shooting core box 20 that bottom locating slot 201 is just right arranges steam vent group 202, steam vent group 202 is communicated with bottom locating slot 201, to form the exhaust passage of clavate core core box 40, the size of the mounting groove that top locating slot 101 and bottom locating slot 201 form is mated with the size of clavate core core box 40, so that clavate core core box 40 is fixed in mounting groove.Mounting groove is two that are arranged side by side, in order to install two clavate core shooting core boxes 40 simultaneously, to enhance productivity.
Wherein, clavate core core box 40 comprises the first core core box 401 and the second core core box 402 along clavate core maximum cross-section parting, and along maximum cross-section to the clavate core groove that the first core core box 401 inside and the second core core box 402 inside extend to form, be arranged on the sand inlet 403 be connected with clavate core groove on the first core core box 40 upper surface, be arranged on the gas outlet 405 be connected with clavate core groove of the first core core box 40 lower surface, be arranged on the screw rod clamping slot 406 on clavate core core box 40 two sides, in the mode being inserted screw rod clamping slot 406 by screw rod, the first core core box 401 and the second core core box 402 are fixedly mounted, two of core box relative sidewalls arrange two screw rod clamping slots 406, in advance clavate core core box is fixed before using core shooter core shooting, core is avoided to occur faulting of slab ends defect.By the first core core box 401 and the second core core box 402 along maximum cross-section matched moulds, the clavate core groove of the first core core box 401 and the clavate core groove of the second core core box 402 form the core core chamber 407 of clavate core core box, clavate core core box 40 after matched moulds is vertically installed in mounting groove, sand inlet 403 faces with the sand mouth group 102 of penetrating of top locating slot 101, penetrate from top locating slot 101 the core core chamber 407 that sand mouth group 102 and sand inlet 403 enter clavate core core box to make core sand, gas outlet 405 faces with the steam vent group 202 of bottom locating slot 201, discharge from the steam vent group 202 of gas outlet 405 and bottom locating slot with the air-flow in the core core chamber 407 making clavate core core box.
Wherein, the quantity of the clavate core groove that the face that the first core core box 401, second core core box 402 contacts is arranged is two, to form two core core chambeies, the core core chamber 407 of two clavate core core boxes to be set in parallel in excellent core sand core core box 40 and not to be communicated with, be communicated with by " people " font passage 404 between sand inlet 403 and the core core chamber 407 of two clavate core core boxes, to make core sand enter from sand inlet 403, and enter respectively in the core core chamber 407 of two clavate core core boxes along " people " font passage 404.When penetrating sand, clavate core core box 40 can make two clavate cores simultaneously.Wherein, first core core box 401 of vertical placement and the upper end of the second core core box 402 arrange " people " font groove, " people " font groove of the first core core box 401 is communicated with the clavate core groove on the first core core box, " people " font groove of the second core core box 402 is communicated with the clavate core groove on the second core core box, " people " font groove of the upper end of the first core core box 401, second core core box 402 faces, so to form described " people " font passage 404.
Wherein, the bottom of bottom core shooting core box 20 arranges plunger tip bar 203, plunger tip bar 203 is multiple, and the position of multiple plunger tip bar 203 is corresponding with the position in the core core chamber that top core shooting core box 10 and bottom core shooting core box 20 form, with the core jack-up of formation after being completed by core shooting.Wherein, just multiple plunger tip bar 203 is arranged to the position of bottom locating slot 201 in the bottom of bottom core shooting core box 20, described plunger tip bar 203 through the bottom of bottom locating slot 201 to contact with the clavate core core box 40 be arranged in mounting groove, with clavate core core box 40 jack-up after core shooting is completed.So as required multiple plunger tip bar 203 can be set for the area of clavate core core box 40 bottom surface of jack-up and weight size thereof.
Before core shooting, first insert along clavate core core box 40 screw rod clamping slot 406 with screw rod, by fixing for the left and right portion of clavate core core box 40 assembling, again clavate core core box 40 is inserted in the bottom locating slot 201 of bottom core shooting core box 20, again the top locating slot 101 of top core shooting core box 10 is aligned after clavate core core box 40 installs, assembling up with bottom core shooting core box 20, then the core shooting core box assembled is placed in core shooter and starts to penetrate sand, core sand is under compressed air and acceleration of gravity double action, the core core chamber 407 of clavate core core box is injected by " people " font passage 404 penetrating the sand inlet 403 of sand mouth group 102 and clavate core core box 40 of top core shooting core box 10, gas is discharged rapidly from the gas outlet 405 of excellent core sand core core box and the steam vent group 202 of bottom core shooting core box, guarantee to penetrate real clavate core.After penetrating sand, by top core shooting core box and bottom core shooting core box die sinking, plunger tip masthead goes out clavate core core box, and clavate core is being taken out in the die sinking of clavate core core box.
The present invention is arranged in a core shooting core box by all integrated for all cores needed during a cast casting, comprising clavate core, due to the elongate form of clavate core, small volume, quantity is more, if adopt horizontal parting together with other cores, horizontal core shooting, see Fig. 7, the unreal defect of sand is penetrated in the inside that there is excellent core sand core, clavate core is arranged separately independently clavate core core box 40 by the present invention, after adopting maximum cross-section parting, reserved mounting groove on core shooting core box 1, clavate core core box 40 is inserted in mounting groove along maximum cross-section perpendicular to the horizontal parting face of core shooting core box, so clavate core core box is nested in core shooting core box, in guarantee core shooting core box while the horizontal core shooting of other cores, clavate core adopts vertical core shooting, start after penetrating sand machine, core sand is under compressed air and acceleration of gravity double action, core sand injects the core core chamber 407 of clavate core core box by the sand inlet 403 of clavate core core box 40, gas is discharged rapidly from the gas outlet 405 below core box and steam vent group 202, guarantee to penetrate real clavate core.When some clavate cores damages in process of production, or when needing manual core making, can be used alone clavate core core box 40 and carry out manual core making, do not start core shooter and produce, conveniently while reducing production cost to produce.
Claims (7)
1. produce the core shooting core box of clavate core for one kind, the core shooting core box of described production clavate core comprises top core shooting core box along horizontal parting face parting and bottom core shooting core box, and be arranged on top core shooting core case top and corresponding with the core core chamber quantity in the core shooting core box of production clavate core penetrate sand mouth group, be arranged on bottom the core shooting core box of bottom and corresponding with the core core chamber quantity in the core shooting core box of production clavate core steam vent group, along the core groove that horizontal parting extends to form towards described top core shooting core box and bottom core shooting core box interior, by described top core shooting core box and bottom core shooting core box along horizontal parting face matched moulds, the core groove of described top core shooting core box and the core groove of described bottom core shooting core box form core core chamber, described sand mouth group of penetrating communicates with the core groove of top core shooting core box, core core chamber is entered from penetrating sand mouth group to make core sand, described steam vent group communicates with the core groove of bottom core shooting core box, to form the exhaust passage in core core chamber, it is characterized in that: described top core shooting core box is also provided with top locating slot, described bottom core shooting core box also arranges bottom locating slot, top locating slot and bottom locating slot face, described sand mouth group of penetrating is communicated with top locating slot, described steam vent group is communicated with bottom locating slot, top locating slot and bottom locating slot form mounting groove, the size of mounting groove and the size of described clavate core core box match, what described clavate core core box was vertical is arranged in mounting groove, core core chamber in described clavate core core box is that vertical direction is arranged, the sand inlet at the top of described clavate core core box with penetrate sand mouth group just to and be communicated with, the gas outlet of the bottom of described clavate core core box and described steam vent group just to and be communicated with.
2. the core shooting core box of production clavate core as claimed in claim 1, it is characterized in that: described clavate core core box comprises the first core core box along clavate core maximum cross-section parting and the second core core box, first core core box and the second core core box vertically connect and are fixed together after touch, first core core box, the face that second core core box contacts arranges the clavate core groove corresponding with pre-prepared clavate core, the bearing of trend of clavate core groove is vertical direction, first core core box, clavate core groove on second core core box faces, to form the core core chamber of clavate core core box, the upper end of the first core core box of vertical placement offers the sand inlet be communicated with clavate core groove, the lower end of the first core core box of vertical placement offers the gas outlet be communicated with clavate core groove, the both sides of the first core core box, the second core core box arrange screw rod clamping slot, to be matched by screw rod clamping slot and screw rod to make the first core core box, the second core core box relatively fixing.
3. the core shooting core box of production clavate core as claimed in claim 2, it is characterized in that: the first core core box, the quantity of the clavate core groove that the face that the second core core box contacts is arranged is two, to form the core core chamber of two clavate core core boxes, the core core chamber of described two clavate core core boxes of described clavate core core box is parallel to each other and is not communicated with, by " people " font channel connection between the core core chamber of described sand inlet and described two clavate core core boxes, enter from sand inlet to make core sand, and enter respectively along " people " font passage in the core core chamber of described two clavate core core boxes.
4. the core shooting core box of production clavate core as claimed in claim 3, it is characterized in that: the first core core box vertically placed and the upper end of the second core core box arrange " people " font groove, " people " font groove of the first core core box is communicated with the clavate core groove on the first core core box, " people " font groove of the second core core box is communicated with the clavate core groove on the second core core box, " people " font groove of the upper end of the first core core box, the second core core box faces, so to form described " people " font passage.
5. the core shooting core box of production clavate core as claimed in claim 1, is characterized in that: described mounting groove is two that are arranged side by side, in order to install two clavate core core boxes simultaneously.
6. the core shooting core box of production clavate core as claimed in claim 1, it is characterized in that: the bottom of described bottom core shooting core box arranges plunger tip bar, described plunger tip bar is multiple, the position of described multiple plunger tip bar is corresponding with the position in the core core chamber that described top core shooting core box and bottom core shooting core box form, with the core jack-up of formation after being completed by core shooting.
7. the core shooting core box of production clavate core as claimed in claim 6, it is characterized in that: just multiple plunger tip bar is arranged to the position of described lower channel in the bottom of described bottom core shooting core box, described plunger tip bar through the bottom of lower channel to contact with the clavate core core box be arranged in mounting groove, with the clavate core core box jack-up after core shooting is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510480727.9A CN105033175B (en) | 2015-08-09 | 2015-08-09 | Core shooting core box for producing rod-shaped sand cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510480727.9A CN105033175B (en) | 2015-08-09 | 2015-08-09 | Core shooting core box for producing rod-shaped sand cores |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105033175A true CN105033175A (en) | 2015-11-11 |
| CN105033175B CN105033175B (en) | 2017-05-10 |
Family
ID=54440474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510480727.9A Active CN105033175B (en) | 2015-08-09 | 2015-08-09 | Core shooting core box for producing rod-shaped sand cores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105033175B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5785107A (en) * | 1995-12-29 | 1998-07-28 | Georg Fischer Disa, Inc. | Apparatus and method for producing multiple cores |
| CN201482917U (en) * | 2009-09-07 | 2010-05-26 | 芜湖瑞立达汽车模具制作有限公司 | Horizontal typing hot core box for making car water jacket sand core |
| CN102310166A (en) * | 2011-10-19 | 2012-01-11 | 华东泰克西汽车铸造有限公司 | Production technology of sand core in oil duct of automobile engine block |
| CN202212527U (en) * | 2011-09-28 | 2012-05-09 | 宁波全力机械模具有限公司 | Integral core shooting box mold for railway vehicle swing bolster |
| CN202239510U (en) * | 2011-09-14 | 2012-05-30 | 河北欧耐机械模具有限公司 | Double-station core shooter |
| CN202291239U (en) * | 2011-09-16 | 2012-07-04 | 烟台胜地汽车零部件制造有限公司 | Sand core box for making annular sand core |
| CN202506798U (en) * | 2012-04-17 | 2012-10-31 | 宁波全力机械模具有限公司 | Die for casting hot core box |
| CN203495135U (en) * | 2013-10-16 | 2014-03-26 | 四川省祥业机械铸造有限公司 | Sand core mould structure of engine cylinder block |
| CN203711756U (en) * | 2014-01-27 | 2014-07-16 | 苏州明志科技有限公司 | Floating split-type locking mechanism for vertical parting cold core box |
| CN203764887U (en) * | 2014-04-07 | 2014-08-13 | 亚新科国际铸造（山西）有限公司 | Engine cylinder body and cylinder cover core box provided with quick locking device |
-
2015
- 2015-08-09 CN CN201510480727.9A patent/CN105033175B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5785107A (en) * | 1995-12-29 | 1998-07-28 | Georg Fischer Disa, Inc. | Apparatus and method for producing multiple cores |
| CN201482917U (en) * | 2009-09-07 | 2010-05-26 | 芜湖瑞立达汽车模具制作有限公司 | Horizontal typing hot core box for making car water jacket sand core |
| CN202239510U (en) * | 2011-09-14 | 2012-05-30 | 河北欧耐机械模具有限公司 | Double-station core shooter |
| CN202291239U (en) * | 2011-09-16 | 2012-07-04 | 烟台胜地汽车零部件制造有限公司 | Sand core box for making annular sand core |
| CN202212527U (en) * | 2011-09-28 | 2012-05-09 | 宁波全力机械模具有限公司 | Integral core shooting box mold for railway vehicle swing bolster |
| CN102310166A (en) * | 2011-10-19 | 2012-01-11 | 华东泰克西汽车铸造有限公司 | Production technology of sand core in oil duct of automobile engine block |
| CN202506798U (en) * | 2012-04-17 | 2012-10-31 | 宁波全力机械模具有限公司 | Die for casting hot core box |
| CN203495135U (en) * | 2013-10-16 | 2014-03-26 | 四川省祥业机械铸造有限公司 | Sand core mould structure of engine cylinder block |
| CN203711756U (en) * | 2014-01-27 | 2014-07-16 | 苏州明志科技有限公司 | Floating split-type locking mechanism for vertical parting cold core box |
| CN203764887U (en) * | 2014-04-07 | 2014-08-13 | 亚新科国际铸造（山西）有限公司 | Engine cylinder body and cylinder cover core box provided with quick locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105033175B (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204075095U (en) | Locating chaplet | |
| CN203281803U (en) | Core box of double-channel entire sand core | |
| CN103752767A (en) | Shaping structure and manufacturing process of casting elongated hole sand core | |
| CN201389616Y (en) | Core box for manufacturing whole sand core of swing bolster | |
| CN102699274B (en) | Metal gravity casting mould and method | |
| CN105215323A (en) | A kind of die casting with the oblique pulled core structure in below | |
| CN201552286U (en) | Novel cylinder core cold-box mould for automobile engine body core making center | |
| CN201841240U (en) | Dead head top exhaust device of sand-prevention air hole | |
| CN105033175A (en) | Core shooting core box for producing rod-shaped sand cores | |
| CN104959551B (en) | Large casting sand box | |
| CN208303835U (en) | A kind of die casting of car washing machine end cap | |
| CN203409203U (en) | Air extractor of sand core | |
| CN203778699U (en) | Core ejection device for fine and small sand core | |
| CN102688985A (en) | Core box convenient for loose piece extraction | |
| CN203875291U (en) | Exhaust manifold casting mold | |
| CN204934500U (en) | A kind of mold system making coupler hook body intermediate core | |
| CN201565560U (en) | Mould drawing device of core shooter | |
| CN103624217A (en) | Forming tool and forming method of lubricating oil chamber sand core of diesel engine front end box body | |
| CN103357823A (en) | Integrated molding mould of dead head and casting cavity | |
| CN202174212U (en) | Coated sand valve cover die | |
| CN202411415U (en) | Magnetic material pressing die | |
| CN203541455U (en) | Sand core manufacturing device | |
| CN203343366U (en) | Tool device of iron mould sand-coating casting brake shoe | |
| CN102078930A (en) | Die-drawing device for core shooter | |
| CN105436435A (en) | Molding box structure for evaporative pattern casting process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |