CN103449287A - Integrated traction machine base, sand mold structure and casting technology of integrated traction machine engine base - Google Patents
Integrated traction machine base, sand mold structure and casting technology of integrated traction machine engine base Download PDFInfo
- Publication number
- CN103449287A CN103449287A CN2013104258569A CN201310425856A CN103449287A CN 103449287 A CN103449287 A CN 103449287A CN 2013104258569 A CN2013104258569 A CN 2013104258569A CN 201310425856 A CN201310425856 A CN 201310425856A CN 103449287 A CN103449287 A CN 103449287A
- Authority
- CN
- China
- Prior art keywords
- traction machine
- core
- sand
- axle sleeve
- die cavity
- 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
Images
Landscapes
- Casting Devices For Molds (AREA)
Abstract
The invention relates to an integrated traction machine base comprising a base, a circular shell, a first bushing, a second bushing, a third bushing, a circular connection part and a through hole. The circular shell stands on the base, the first bushing, the second bushing and the third bushing with the diameters decreasing successively are coaxially arranged at the center of the circular shell and sequentially connected, the circular connection part, perpendicular to the axial direction, connects the end face of the circular shell and the end face of the first bushing, and the through hole is formed in the circular connection part. The circular shell is tangent to the bottom surface of the base, the through hole is located at the joint of the circular shell and the base, and an auxiliary bushing reverse to the third bushing is further arranged at the joint of the second bushing and the third bushing. Since the auxiliary bushing is integrally cast on the traction machine base, the shortcoming of manual assembly of a conventional traction machine base is overcome, efficiency can be increased and cost can be lowered; service life of the auxiliary bushing can be guaranteed by means of integral casting, fixed parts are prevented from falling off due to vibration in use, and stability and precision of the traction machine base can be guaranteed.
Description
Technical field
The invention belongs to the machine casting field, relate to particularly a kind of integrated traction machine support, sand mould structure and foundry technique thereof.
Background technology
Towing machine is the power plant of elevator, and mainly for delivery of with transferring power, making the elevator operation, it mainly comprises electrical motor, drg, coupler, drop-gear box, traction sheave, track adjusting wheel and attached handwheel etc.In general, these parts are arranged on engine base of traction machine, then engine base of traction machine are arranged on the girder steel of elevator member.For above-mentioned parts can be installed, on engine base of traction machine, need to fix some auxiliary accessories by bolt, screw etc., this just need to manually be assembled, increased operation cost, and due to the parts such as electrical motor, drg, coupler, drop-gear box, traction sheave, track adjusting wheel high-speed operation in use, inevitably produce vibration, make the connecting elements such as external bolt, screw produce the trend come off, affect stability, service life and the precision of engine base of traction machine, affect the installation and operation of elevator, cause the generation of accident.
Summary of the invention
The present invention seeks to provide in order to overcome the deficiencies in the prior art a kind of integrated traction machine support.
For achieving the above object, the technical solution adopted in the present invention is: a kind of integrated traction machine support, comprise base, stand on the annular arrangement housing on described base, with being located in the first axle sleeve that annular arrangement housing central authorities connect successively and diameter reduces successively, the second axle sleeve and the 3rd axle sleeve, connect annular arrangement housing end face and the first end face of shaft bush and annular connecting portion perpendicular to axial direction, be located at the through hole on annular connecting portion, described annular arrangement housing and base end face are tangent, described through hole is positioned at annular arrangement housing and base junction, described the second axle sleeve and the 3rd axle sleeve junction also are provided with the auxiliary axle sleeve reverse with the 3rd axle sleeve, and described auxiliary axle sleeve and base, the annular arrangement housing, the first axle sleeve, the second axle sleeve and the 3rd axle sleeve integrally casting moulding.
Optimally, described auxiliary axle sleeve diameter is slightly less than the 3rd axle sleeve diameter.
Further, described auxiliary axle sleeve also is connected with reinforced rib.
Further, described annular connecting portion lateral surface evenly is provided with vertical radiating ribs along excircle.
It is a kind of for making the sand mould structure of described integrated traction machine support that the present invention also provides, described sand mould structure comprises cope box and the drag falsk that molding sand is housed, be located at the die cavity that cope box is identical with the engine base of traction machine size shape with the drag falsk interface, be placed in die cavity the first core that is used to form the 3rd bore sleeve, be placed in die cavity the second core that is used to form through hole, be connected with die cavity and be located in cope box for introduce the ingate of molten iron to die cavity, be connected with ingate and be located at the cross gate in cope box, with cross gate, be connected for pouring into the sprue of molten iron, with die cavity, be connected for getting rid of the air gate of die cavity Air.
Optimally, described sand mould structure also comprises and is located at the overflow device that the first core bottom is connected with die cavity.
Optimally, described sand mould structure also comprises the subsidy of being located at die cavity and the first core junction.
Optimally, described sand mould structure also comprises the filtering net of being located at cross gate and sprue junction.
The present invention also provides a kind of foundry technique for preparing described integrated traction machine support, comprises the following steps:
(a) moulding: the mould identical with the engine base of traction machine size shape is fixed on mould bases, at mould surface spraying mold release heating mould, put corresponding sandbox and add the sand frame and put sand, after putting sand, the logical pressurized air pre-consolidation of being blown, next multiple spot pressure contact is by mechanical ramming, and after die sinking, the unnecessary sand on sandbox surface is by doctor blade sandbox surface, and cope box completes; Make drag falsk by above-mentioned steps;
(b) coremaking: will be arranged on for the preparation of the core box of the first core, the second core on corresponding core shooting machine respectively, die sinking cleaning core box surface also sprays mold release, matched moulds is penetrated sand, heats, is blown into Triethylamine gas, is solidified, then take out core, prescind and penetrate the sand mouth and repair deflashing, at core surface dip-coating alcohol radical graphite paint, dry to obtain the first core, the second core;
(c) mill pouring basin and core: mill molten iron cast passage processed and air gate with milling cutter in cope box, blow away floating sand and broken sand;
(d) mould assembling: under first and second core that will make, to the relevant position of drag falsk, the cope box lid, to drag falsk, is obtained to complete sand mold;
(e) cast: the molten iron of 1400 ~ 1450 ° in casting ladle is carried out to inoculated, obtain qualified iron liquid, then poured into a mould into die cavity by sprue until cast gate is full, foundry goods is cooling in die cavity is unpacked, is cleared up, is taken out foundry goods after surpassing 60 minutes;
(f) cleaning: remove cast passage and the core of foundry goods, carry out ball blast, grinding process, obtain described foundry goods.
Optimally, in described step (a), at the mould assigned address, put subsidy and overflow device.
Because technique scheme is used, the present invention compared with prior art has following advantages: integrated traction machine support of the present invention, and will assist the axle sleeve integrally casting in engine base of traction machine, overcome the shortcoming that traditional engine base of traction machine needs manual assembly, can raise the efficiency, reduce costs; And integrated casting can guarantee the service life of auxiliary axle sleeve, avoided in use coming off of the fixed parts that causes due to vibration, guarantee stability and the precision of engine base of traction machine.
The accompanying drawing explanation
Accompanying drawing 1 is integrated traction machine support front view of the present invention;
Accompanying drawing 2 is integrated traction machine support cutaway view of the present invention;
Accompanying drawing 3 is the structural representation of integrated traction machine support sand mould structure of the present invention;
Accompanying drawing 4 is the cutaway view of integrated traction machine support sand mould structure cope box of the present invention;
Wherein: 1, base; 2, housing; 31, the first axle sleeve; 32, the second axle sleeve; 33, the 3rd axle sleeve; 4, annular connecting portion; 41, radiating ribs; 5, through hole; 6, auxiliary axle sleeve; 7, reinforced rib; 8, cope box; 9, drag falsk; 10, die cavity; 11, the first core; 12, the second core; 13, ingate; 14, cross gate; 15, sprue; 16, air gate; 17, overflow device; 18, subsidy; 19, filtering net.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the invention is elaborated.
This example provides a kind of integrated traction machine support.As depicted in figs. 1 and 2, this integrated traction machine support mainly comprises base 1, annular arrangement housing 2, and wherein annular arrangement housing 2 stands on base 1 and be tangent with base 1 bottom surface.It also comprises annular connecting portion 4, through hole 5, the first axle sleeve 31, the second axle sleeve 32, the 3rd axle sleeve 33, auxiliary axle sleeve 6, wherein the first axle sleeve 31, the second axle sleeve 32 is connected successively with the 3rd axle sleeve 33 and diameter reduces successively, they are with being located in annular arrangement housing 2 central authorities, for fixed rotating shaft; One end face of the end face of the first axle sleeve 31 and annular arrangement housing 2 is in same level, the second axle sleeve 32 and the 3rd axle sleeve 33 extend along annular arrangement housing 2 side surface direction, thus the annular connecting portion 4 that connects annular arrangement housing 2 above-mentioned end faces and the first axle sleeve 31 end faces perpendicular to annular arrangement housing 2 axially; Through hole 5 is positioned on the annular connecting portion 4 of annular arrangement housing 2 and base 1 junction; Auxiliary axle sleeve 6 and the 3rd axle sleeve 33 are reverse, and integrally casting, in the second axle sleeve 32 and the 3rd axle sleeve 33 junctions, does not need extra manually being equipped, and has saved workman's cost.
In the present embodiment, in order to improve the integral body assembling effect of towing machine, rotating shaft that can the fixed diameter skewness, auxiliary axle sleeve 6 diameters are slightly less than the 3rd axle sleeve 33 diameters, and auxiliary axle sleeve 6 outsides also are connected with reinforced rib, gain in strength.Annular connecting portion 4 lateral surfaces evenly are provided with vertical radiating ribs 41 along excircle, have increased the area of contact of engine base of traction machine and outside air, and more good cooling performance is arranged.
This example provides a kind of sand mould structure of integrated traction machine support, for pouring into a mould the engine base of traction machine of embodiment 1.
Sand mould structure as shown in Figure 3 and Figure 4, comprise cope box 8 and drag falsk 9 that molding sand is housed, be located at the die cavity 10 that cope box 8 is identical with the engine base of traction machine size shape with drag falsk 9 interfaces, be placed in die cavity 10 the first core 11 that is used to form the 3rd axle sleeve 33 inner chambers, be placed in die cavity the second core 12 that is used to form through hole, be connected with die cavity 10 and be located in cope box 8 for introduce the ingate 13 of molten iron to die cavity 10, be connected with ingate 13 and be located at the cross gate 14 in cope box 8, with cross gate 14, be connected for the sprue 15 that pours into molten iron, with die cavity, be connected for the air gate 16 of getting rid of the die cavity Air.
The newly-increased corresponding structure of auxiliary axle sleeve 6 belongs to the terminal position that molten iron flows to, and belongs to thin-wall member.When from sprue 15, pouring into molten iron, flow through after cross gate 14, ingate 13 enter die cavity 10, molten iron need be flowed through, and long distance is rear just can be reached, the temperature suppression ratio is more, arrive the local iron liquid temp of terminal position lower than liquid line, iron liquid, in half curdled appearance, easily causes cold shut defects; And the tension force on iron liquid surface increases, the gas in die cavity can't see through iron liquid surface and upwards discharge, and causes the bleb defect; Through contacting with air for a long time, oxidizing reaction easily occurring and produce oxidizing slag in iron liquid flow process, finally all focus on stub area, causes the foundry slag hole defect.In order to overcome above-mentioned shortcoming, improve the quality of foundry goods, in the present embodiment, at first the filtering net 19 with sprue 15 junctions at cross gate 14, filter out being mingled with in molten iron; And be provided with in sand mould structure the first core 11 bottoms the overflow device 17 be connected with die cavity 10, and enter the molten iron of die cavity for collecting early stage, the defect of foundry goods is guided in overflow device 17, in the follow-up cleaning of foundry goods, remove; And to be on the safe side, die cavity 10 and the first core 11 junctions have also increased subsidy 18, increase the fleshiness structure on foundry goods, in follow-up processing, remove by processing, guaranteed the removal that part is also stayed the defect on foundry goods, the qualification rate of foundry goods is stabilized in more than 95%.
Embodiment 3
This example provides a kind of foundry technique of integrated traction machine support, in embodiment 2, under the cooperation of sand mould structure, for casting the engine base of traction machine of embodiment 1, mainly comprises the following steps:
(a) moulding: the mould identical with the engine base of traction machine size shape is fixed on mould bases, at mould surface spraying mold release heating mould, put corresponding sandbox and add the sand frame and put sand, after putting sand, the logical pressurized air pre-consolidation of being blown, next multiple spot pressure contact is by mechanical ramming, and after die sinking, the unnecessary sand on sandbox surface is by doctor blade sandbox surface, and cope box completes; Make drag falsk by above-mentioned steps; As shown in Figure 3, owing to being provided with subsidy and overflow device in sand mould structure, therefore in fixed mould, the assigned address at mould is placed subsidy and overflow device;
(b) coremaking: will be arranged on for the preparation of the core box of the first core, the second core on corresponding core shooting machine respectively, die sinking cleaning core box surface also sprays mold release, matched moulds is penetrated sand, heats, is blown into Triethylamine gas, is solidified, then take out core, prescind and penetrate the sand mouth and repair deflashing, at core surface dip-coating alcohol radical graphite paint, dry to obtain the first core, the second core;
(c) mill pouring basin and core: mill molten iron cast passage processed and air gate with milling cutter in cope box, blow away floating sand and broken sand;
(d) mould assembling: under first and second core that will make, to the relevant position of drag falsk, the cope box lid, to drag falsk, is obtained to complete sand mold;
(e) cast: the molten iron of 1400 ~ 1450 ° in casting ladle is carried out to inoculated, obtain qualified iron liquid, then poured into a mould into die cavity by sprue until cast gate is full, foundry goods is cooling in die cavity is unpacked, is cleared up, is taken out foundry goods after surpassing 60 minutes;
(f) cleaning: remove cast passage and the core of foundry goods, carry out ball blast, grinding process, obtain described foundry goods.
Above-described embodiment is only explanation technical conceive of the present invention and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. an integrated traction machine support, comprise base, stand on the annular arrangement housing on described base, with being located in the first axle sleeve that annular arrangement housing central authorities connect successively and diameter reduces successively, the second axle sleeve and the 3rd axle sleeve, connect annular arrangement housing end face and the first end face of shaft bush and annular connecting portion perpendicular to axial direction, be located at the through hole on annular connecting portion, described annular arrangement housing and base end face are tangent, described through hole is positioned at annular arrangement housing and base junction, it is characterized in that: described the second axle sleeve and the 3rd axle sleeve junction also are provided with the auxiliary axle sleeve reverse with the 3rd axle sleeve, and described auxiliary axle sleeve and base, the annular arrangement housing, the first axle sleeve, the second axle sleeve and the 3rd axle sleeve integrally casting moulding.
2. integrated traction machine support according to claim 1, it is characterized in that: described auxiliary axle sleeve diameter is slightly less than the 3rd axle sleeve diameter.
3. integrated traction machine support according to claim 1 and 2, it is characterized in that: described auxiliary axle sleeve also is connected with reinforced rib.
4. integrated traction machine support according to claim 1 and 2, it is characterized in that: described annular connecting portion lateral surface evenly is provided with vertical radiating ribs along excircle.
5. the sand mould structure of the described integrated traction machine support of claim 1, it is characterized in that: described sand mould structure comprises cope box and the drag falsk that molding sand is housed, be located at the die cavity that cope box is identical with the engine base of traction machine size shape with the drag falsk interface, be placed in die cavity the first core that is used to form the 3rd bore sleeve, be placed in die cavity the second core that is used to form through hole, be connected with die cavity and be located in cope box for introduce the ingate of molten iron to die cavity, be connected with ingate and be located at the cross gate in cope box, with cross gate, be connected for pouring into the sprue of molten iron, with die cavity, be connected for getting rid of the air gate of die cavity Air.
6. the sand mould structure of integrated traction machine support according to claim 5 is characterized in that: described sand mould structure also comprises is located at the overflow device that the first core bottom is connected with die cavity.
7. the sand mould structure of integrated traction machine support according to claim 5, it is characterized in that: described sand mould structure also comprises the subsidy of being located at die cavity and the first core junction.
8. the sand mould structure of integrated traction machine support according to claim 5, it is characterized in that: described sand mould structure also comprises the filtering net of being located at cross gate and sprue junction.
9. the foundry technique of the described integrated traction machine support of claim 1 is characterized in that: comprise the following steps:
(a) moulding: the mould identical with the engine base of traction machine size shape is fixed on mould bases, at mould surface spraying mold release heating mould, put corresponding sandbox and add the sand frame and put sand, after putting sand, the logical pressurized air pre-consolidation of being blown, next multiple spot pressure contact is by mechanical ramming, and after die sinking, the unnecessary sand on sandbox surface is by doctor blade sandbox surface, and cope box completes; Make drag falsk by above-mentioned steps;
(b) coremaking: will be arranged on for the preparation of the core box of the first core, the second core on corresponding core shooting machine respectively, die sinking cleaning core box surface also sprays mold release, matched moulds is penetrated sand, heats, is blown into Triethylamine gas, is solidified, then take out core, prescind and penetrate the sand mouth and repair deflashing, at core surface dip-coating alcohol radical graphite paint, dry to obtain the first core, the second core;
(c) mill pouring basin and core: mill molten iron cast passage processed and air gate with milling cutter in cope box, blow away floating sand and broken sand;
(d) mould assembling: under first and second core that will make, to the relevant position of drag falsk, the cope box lid, to drag falsk, is obtained to complete sand mold;
(e) cast: the molten iron of 1400 ~ 1450 ° in casting ladle is carried out to inoculated, obtain qualified iron liquid, then poured into a mould into die cavity by sprue until cast gate is full, foundry goods is cooling in die cavity is unpacked, is cleared up, is taken out foundry goods after surpassing 60 minutes;
(f) cleaning: remove cast passage and the core of foundry goods, carry out ball blast, grinding process, obtain described foundry goods.
10. the foundry technique of integrated traction machine support according to claim 9, is characterized in that: in described step (a), at the mould assigned address, put subsidy and overflow device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104258569A CN103449287A (en) | 2013-09-18 | 2013-09-18 | Integrated traction machine base, sand mold structure and casting technology of integrated traction machine engine base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104258569A CN103449287A (en) | 2013-09-18 | 2013-09-18 | Integrated traction machine base, sand mold structure and casting technology of integrated traction machine engine base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103449287A true CN103449287A (en) | 2013-12-18 |
Family
ID=49732201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104258569A Pending CN103449287A (en) | 2013-09-18 | 2013-09-18 | Integrated traction machine base, sand mold structure and casting technology of integrated traction machine engine base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103449287A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952945A (en) * | 2016-07-22 | 2016-09-21 | 南通华东油压科技有限公司 | Flash-free valve body casting |
| CN107576428A (en) * | 2016-07-05 | 2018-01-12 | 北京新宇航世纪科技有限公司 | Torque sensing device assembly |
| CN108907105A (en) * | 2018-09-10 | 2018-11-30 | 杭州西子富沃德精密机械有限公司 | A kind of running gate system and pouring procedure of Capstan rotor casting |
| CN109014065A (en) * | 2018-09-10 | 2018-12-18 | 杭州西子富沃德精密机械有限公司 | A kind of running gate system and pouring procedure of engine base of traction machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003080347A (en) * | 2001-06-11 | 2003-03-18 | General Motors Corp <Gm> | Method for casting engine block |
| CN202116152U (en) * | 2011-06-07 | 2012-01-18 | 佛山市合普电梯部件有限公司 | Permanent magnetic synchronous traction machine in double-integration structure |
| CN202193523U (en) * | 2011-07-22 | 2012-04-18 | 叶根香 | Switched reluctance motor-type elevator traction machine |
| CN102513509A (en) * | 2011-12-16 | 2012-06-27 | 宁夏长城须崎铸造有限公司 | Casting technique for bracket casting of marine pod-type electric propulsion system |
| CN203461669U (en) * | 2013-09-18 | 2014-03-05 | 苏州市通润机械铸造有限公司 | Integrated traction machine engine seat and sand mould structure thereof |
-
2013
- 2013-09-18 CN CN2013104258569A patent/CN103449287A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003080347A (en) * | 2001-06-11 | 2003-03-18 | General Motors Corp <Gm> | Method for casting engine block |
| CN202116152U (en) * | 2011-06-07 | 2012-01-18 | 佛山市合普电梯部件有限公司 | Permanent magnetic synchronous traction machine in double-integration structure |
| CN202193523U (en) * | 2011-07-22 | 2012-04-18 | 叶根香 | Switched reluctance motor-type elevator traction machine |
| CN102513509A (en) * | 2011-12-16 | 2012-06-27 | 宁夏长城须崎铸造有限公司 | Casting technique for bracket casting of marine pod-type electric propulsion system |
| CN203461669U (en) * | 2013-09-18 | 2014-03-05 | 苏州市通润机械铸造有限公司 | Integrated traction machine engine seat and sand mould structure thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576428A (en) * | 2016-07-05 | 2018-01-12 | 北京新宇航世纪科技有限公司 | Torque sensing device assembly |
| CN105952945A (en) * | 2016-07-22 | 2016-09-21 | 南通华东油压科技有限公司 | Flash-free valve body casting |
| CN105952945B (en) * | 2016-07-22 | 2018-09-14 | 南通华东油压科技有限公司 | A kind of no fash valve body moulding |
| CN108907105A (en) * | 2018-09-10 | 2018-11-30 | 杭州西子富沃德精密机械有限公司 | A kind of running gate system and pouring procedure of Capstan rotor casting |
| CN109014065A (en) * | 2018-09-10 | 2018-12-18 | 杭州西子富沃德精密机械有限公司 | A kind of running gate system and pouring procedure of engine base of traction machine |
| CN109014065B (en) * | 2018-09-10 | 2024-02-23 | 杭州西子富沃德精密机械有限公司 | Casting system and casting method for tractor base |
| CN108907105B (en) * | 2018-09-10 | 2024-05-28 | 杭州西子富沃德精密机械有限公司 | Casting system and casting method for traction machine rotor casting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104399881B (en) | The casting method of low-speed diesel for large-bore vessel bearing block steel-casting | |
| CN102489673B (en) | Method for casting locomotive positioning arm castings | |
| CN102527943B (en) | Overhead choke-flow filter buffer type casting pouring technological method | |
| CN103624218A (en) | Casting method of hollow crankshaft of slurry pump | |
| CN103449287A (en) | Integrated traction machine base, sand mold structure and casting technology of integrated traction machine engine base | |
| CN103464693B (en) | A kind of casting technique reducing traction sheave grooving surface hardness difference | |
| CN105364020B (en) | The riser-free casting method of flywheel casting mold and the flywheel casting mold | |
| CN105499535A (en) | Pouring system for die casting of tensioning wheels | |
| CN105382201A (en) | Brake disc casting technology and brake disc casting mold thereof | |
| CN109047667A (en) | A kind of buhl saw bearing block casting technique | |
| CN100542716C (en) | The regression formula running gate system of casting train wheel | |
| CN107042287A (en) | A kind of casting method of steam turbine high pressure main air valve casting | |
| CN105880485A (en) | Turbine casing casting method | |
| CN105750493A (en) | Non-chiller ductile iron non-riser casting technology | |
| CN204075081U (en) | For the upper sand mo(u)ld of cast iron crankshaft | |
| CN100548536C (en) | The regression formula pouring procedure of casting train wheel | |
| CN203461669U (en) | Integrated traction machine engine seat and sand mould structure thereof | |
| CN204724801U (en) | Full width type belt pulley with groove casting mould | |
| CN101422809B (en) | Shrinkage compensation method of hollow cast | |
| CN206824619U (en) | Brake disc casting moulding system and brake disc cast casting mould | |
| CN102756094A (en) | Casting process for cylinder sleeves | |
| CN210146930U (en) | Riser-free pouring system | |
| CN202207772U (en) | Sand mould structure | |
| CN205165756U (en) | Casting die | |
| CN101422807A (en) | Forging method of large-size middle-opening type centrifugal pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131218 |