CN109967698A - A kind of mold being used to prepare the two-sided shell mould of casting metal microballoon - Google Patents
A kind of mold being used to prepare the two-sided shell mould of casting metal microballoon Download PDFInfo
- Publication number
- CN109967698A CN109967698A CN201910424544.3A CN201910424544A CN109967698A CN 109967698 A CN109967698 A CN 109967698A CN 201910424544 A CN201910424544 A CN 201910424544A CN 109967698 A CN109967698 A CN 109967698A
- Authority
- CN
- China
- Prior art keywords
- mould
- template face
- template
- mold
- sided
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- 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
- B22C9/082—Sprues, pouring cups
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a kind of molds for being used to prepare the two-sided resin-coated sand shell mould of casting metal microballoon, including fixing mould and flexible mould, the flexible mould can cover conjunction and separation fixing mould, the fixing mould and flexible mould all have a template face, the mould part in the template face of the fixing mould and the flexible mould is mirrored into setting, the flexible mould and the top fixing mould Gai Hehou, which are formed, penetrates Sha Kou, the lateral gap of side formation exhaust, bottom end forms the bottom gap of exhaust and inside forms template chamber, sand is heating and curing by heating tube two-sided shell mould is made from described penetrate after sand mouth injects template chamber using air pressure.Inventive die uses and penetrates sand mode surjection sand into mold, then it is heated and cured into two-sided shell mould, preparing two-sided shell mould is integration apparatus operation, without manually sand being added to prepare shell mould, mechanization degree is high, and the casting microballoon of the mutually level shell mould preparation of casting is greater than the casting microballoon quantity of preparation shell mould manually every time.
Description
Technical field
The invention belongs to precoated sand casting shell technical fields, and in particular to it is two-sided that one kind is used to prepare casting metal microballoon
The mold of shell mould.
Background technique
The mold of tradition preparation casting metal microballoon is manual operation mold, is first manually opened upper mold, then downwards
The template part of mold imports sand, later wipes extra sand off with scraper plate, presses down on cope plate after having scraped sand, so that sand
Be heating and curing molding.The shell mould thickness being prepared is big, shell mould intensity is low, can only be single side shell mould, need two shell mould buttons
The chamber of a casting of molten metal could be formed together, sand using amount is big, and high labor cost, production efficiency is low, and working environment is poor,
Large labor intensity.
Summary of the invention
The purpose of the present invention is to solve the above problems, and to be used to prepare casting metal microballoon two-sided for the one kind proposed
The mold of shell mould, the mold penetrate sand mode using air pressure and penetrate sand filling into mold, are then heated and cured into two-sided shell mould, mould
The lid of tool closes, sand is penetrated to mold and is heating and curing, and to prepare two-sided shell mould be integration apparatus operation, without artificial plus
Sand prepares shell mould, and mechanization degree is high, and the metallic microspheres of the mutually level shell mould preparation of casting are greater than every time prepares shell manually
The metallic microspheres quantity of type.
The present invention provides a kind of molds for being used to prepare the two-sided shell mould of casting metal microballoon, including fixing mould and activity
Mold, the flexible mould can cover conjunction and separation fixing mould, and the fixing mould and flexible mould all have a template face,
The mould part in the template face of the fixing mould and the flexible mould is mirrored into setting, the flexible mould and fixing mould
The top Gai Hehou forms injection sand mouth, side forms the lateral gap of exhaust, bottom end forms the bottom gap of exhaust and interior
Portion forms template chamber, sand from it is described penetrate sand mouth injection template chamber after be heating and curing two-sided shell mould be made.
As preferred means, the template face in the fixing mould and flexible mould includes prepare two two-sided sand plates the
One template face and the second template face.
As further preferred means, air discharge duct, the row are equipped between first template face and the second template face
Air drain is communicated with the first template face or the second template face bottom end, between first template face and the second template face and air discharge duct
Medial gap equipped with multiple exhausts.
As further preferred means, the template face includes casting protrusion, sprue protrusion, four branch flow passage protrusions
And the middle position of sprue protrusion, the branch flow passage protrusion and mainstream is arranged in several hemisphere protrusions, the casting protrusion
The vertical connection of road protrusion, the hemisphere protrusion are evenly distributed in template face, and the hemisphere protrusion and adjacent branch flow passage are convex
It is equipped with the first fin between rising, is equipped with the second fin between the laterally adjacent hemisphere protrusion, the top dome of the hemisphere protrusion is high
Degree is higher than sprue protrusion and four branch flow passage heights of projection.
As further preferred means, the corner on a diagonal line in the template face of the fixing mould is equipped with limit
Position protrusion, the corner on another diagonal line are equipped with limit notch, on the template face of the flexible mould with fixing mould
Template face upper limit protrusion opposite position is equipped with limit notch, and position corresponding with the template face upper limit recess of fixing mould
Retention bead is installed.
As further preferred means, the template face of the fixing mould is equipped with a limit close to the position of two sides
Position column, and the template face upper limit column opposite position of the template face of flexible mould and fixing mould is equipped with limit hole.
As further preferred means, slit aperture becomes larger the lateral gap from inside to outside.
As further preferred means, the fixing mould can be superimposed with two-sided shell mould prepared by flexible mould.
The invention has the advantages that: 1, fixing mould of the invention and flexible mould Gai Hehou, using penetrating sand mode to mold
Sand filling is penetrated in chamber, is then heated and cured into two-sided shell mould, and the lid of mold closes, penetrates sand and the preparation that is heating and curing to mold
Two-sided shell mould is integration apparatus operation, and without manually adding sand to prepare shell mould, mechanization degree is high, and can once prepare two
The two-sided shell mould of block, the hardness of two-sided shell mould is big, non-friable, sand using amount is few.2, two-sided shell mould prepared by the present invention can be with positive and negative more
Layer superposition, then from the sprue gate of one piece of two-sided shell mould of top layer (casting protrusion made of template position) to pour into metal molten
Liquid can once be poured more metallic microspheres in this way, be far longer than the microballoon that the single side shell mould prepared by hand is once prepared.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of mold for being used to prepare the two-sided shell mould of casting metal microballoon of the invention.
Fig. 2 is a kind of template face of the fixing mould of mold for being used to prepare the two-sided shell mould of casting metal microballoon of the invention
Structural schematic diagram (hemisphere protrusion quantity be hint effect).
Fig. 3 is the structural schematic diagram of the two-sided shell mould of preparation of the invention.
Fig. 4 is structure enlargement diagram at A in Fig. 3.
Fig. 5 is the structural schematic diagram that the two-sided shell mould of muti-piece is stacked.
In figure: 1, fixing mould;2, flexible mould;3, Sha Kou is penetrated;4, lateral gap;5, bottom gap;6, air discharge duct;7, it limits
Position column;8, two-sided sand plate;81, branch flow passage protrusion;82, sprue protrusion;83, casting protrusion;84, hemisphere protrusion;85, limit convex
It rises;86, limit notch;801, the first fin;802, the second fin.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing:
A kind of mold being used to prepare the two-sided shell mould of casting metal microballoon of the invention, including fixing mould 1 and flexible mould 2,
The flexible mould 2 can cover conjunction and separation fixing mould 1, and the fixing mould 1 and flexible mould 2 all have a template face,
The mould part in the fixing mould 1 and the template face of the flexible mould 2 is mirrored into setting, the flexible mould 2 and fixation
1 top Gai Hehou of mold forms and penetrates sand mouth 3, side forms the lateral gap 4 of exhaust, bottom end forms the bottom gap 5 of exhaust
And it is internal form template chamber, sand from it is described penetrate sand mouth 3 and inject after template chamber to be heating and curing two-sided shell mould 8 is made.Preparation
The sand of two-sided shell mould 8 is injected into mold together with sand using sand shooting mechanism by gas, and is injected from sand mouth 3 is penetrated.
The gap width in lateral gap 4 and bottom gap 5 is less than the diameter of sand, only gas is allowed to pass through, sand can not pass through.
Template face in the fixing mould 1 and flexible mould 2 include prepare two two-sided shell moulds 8 the first template face and
Second template face.At this point, can once prepare two two-sided shell moulds 8 there are two sand mouth 3 is penetrated.
Air discharge duct 6, the air discharge duct 6 and the first template face or the are equipped between first template face and the second template face
Two template faces bottom end communicate, and are equipped with the interior of multiple exhausts between first template face and the second template face and air discharge duct 6
Side clearance 61.It is equivalent to and the mold as two is synthesized one, an air discharge duct 6 is set among latter two right mold, in this way
The gas of mold discharge enters air discharge duct 6 by medial gap 61, and is discharged from 6 bottom end of air discharge duct.
The template face includes that casting protrusion 83,82, four branch flow passage protrusions 81 of sprue protrusion and several hemisphere are convex
84 are played, the middle position of sprue protrusion 82, the branch flow passage protrusion 81 and sprue protrusion is arranged in the casting protrusion 83
82 vertical connections, the hemisphere protrusion 84 are evenly distributed in template face, and the hemisphere protrusion 84 is convex with adjacent branch flow passage
It rises and is equipped with the first fin 801 between 81, be equipped with the second fin 802 between the laterally adjacent hemisphere protrusion 84, the hemisphere is convex
The top dome height for playing 84 is higher than sprue protrusion 82 and four 81 height of branch flow passage protrusion.
After fixing mould 1 is bonded with flexible mould 2, two opposite casting protrusions 83 will be bonded, will not there are
Gap, the two-sided sand plate being prepared just will form sprue gate, and fixing mould 1 be bonded with flexible mould 2 after corresponding sprue
There are larger gap between 82, four branch flow passages of protrusion protrusion 81 and several hemisphere protrusions 84, and sprue protrusion 82, branch
Gap between runner protrusion 81 is greater than the gap between hemisphere protrusion 84, is conducive to sand in this way from runner protrusion 82, branch
Gap between runner protrusion 81 is quickly through reduction resistance.
Such as the accompanying drawings for the two-sided sand plate 8 that Fig. 3-5 is preparation, label 81 is that branch flow passage protrusion 81 is made in Fig. 3
Standby direct current flow channel for liquids, and label 82 is the liquid main flow road of 82 preparation of sprue protrusion, and label 83 is that two casting are convex
Rise 83 fit after the sprue gate that is formed, label 84 is the semi-circular notch of 84 preparation of hemisphere protrusion, and the recess of 85 labels is limited
85 preparation of position protrusion, meanwhile, the protrusion of label 86 is what limit notch 86 was formed.In the liquid flow of figure label 801 and 802
To be respectively the first fin 801 and the second fin 802 preparation.
Corner on one diagonal line in the template face of the fixing mould 1 be equipped with retention bead 85, another it is diagonal
Corner on line is equipped with limit notch 86, convex with the template face upper limit of fixing mould 1 on the template face of the flexible mould 2
It plays 85 opposite positions and is equipped with limit notch 86, and be equipped with 86 opposite position of template face upper limit recess of fixing mould 1
Retention bead 85.The retention bead 85 of one piece of upper surface is inserted into one piece of lower surface limit notch 86 below, works as muti-piece
After two-sided shell mould 8 is superimposed, is conducive to the superimposed stabilization of two-sided shell mould 8 and placement location is accurate.
The template face of the fixing mould 1 is equipped with a limited post 7 close to the position of two sides, and flexible mould 2
7 opposite position of template face upper limit column of template face and fixing mould 1 is equipped with limit hole.When flexible mould 2 is close to stent
When having 1 and being bonded on it, limited post 7 will be inserted into limit hole, so that the two fitting is accurate.
Slit aperture becomes larger the lateral gap 4 from inside to outside.It becomes larger and is conducive to gas flow velocity change inside-out
It is slow, when people aside operates, larger air-flow is not had and is sprayed, which is heating and curing using electrothermal tube and two-sided shell mould 8 is made.
The fixing mould 1 can be superimposed with two-sided shell mould 8 prepared by flexible mould 2.The superimposed two-sided shell mould 8 of muti-piece
It is put into Sha Duizhong, 8 surrounding of two-sided shell mould of stacking has piled with sand, first is that in order to stablize the two-sided shell mould of stacking, second is that preventing
The molten metal two-sided shell mould 8 that accidentally outflow stacks flows to outside.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
The present invention is not limited to above to the description of embodiment, the content that those skilled in the art disclose according to the present invention,
The improvement and modification that need not be carried out by creative work on the basis of the present invention, all should protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of mold for being used to prepare the two-sided shell mould of casting metal ball, it is characterised in that: including fixing mould (1) and movable mold
Have (2), the flexible mould (2) can cover conjunction and separation fixing mould (1), and the fixing mould (1) and flexible mould (2) have
There is a template face, the fixing mould (1) and the mould part in the template face of the flexible mould (2) are mirrored into setting, institute
It states flexible mould (2) and fixing mould (1) top Gai Hehou forms note sand mouth (3), side forms the lateral gap of exhaust
(4), bottom end forms the bottom gap (5) of exhaust and internal formation template chamber, sand penetrate Sha Kou (3) injection template chamber from described
It is heating and curing behind room and two-sided shell mould (8) is made.
2. a kind of mold for being used to prepare ingot metal and making the two-sided shell mould of microballoon according to claim 1, it is characterised in that: institute
State the first template face and second that the template face in fixing mould (1) and flexible mould (2) includes two two-sided shell moulds (8) of preparation
Template face.
3. a kind of mold for being used to prepare the two-sided sand plate of casting metal microballoon according to claim 2, it is characterised in that: institute
It states and is equipped with air discharge duct (6) between the first template face and the second template face, the air discharge duct (6) and the first template face or the second template
Face bottom end communicates, and is equipped between the inside of multiple exhausts between first template face and the second template face and air discharge duct (6)
Gap (61).
4. a kind of mold for being used to prepare the two-sided shell mould of casting metal microballoon according to claim 1 or 2, feature exist
In: the template face includes that casting raised (83), sprue raised (82), four branch flow passage protrusions (81) and several hemisphere are convex
It rises (84), it is described to be poured protrusion (83) setting in the middle position of sprue raised (82), the branch flow passage raised (81) and master
Runner protrusion (82) vertically connects, and the hemisphere raised (84) is evenly distributed in template face, the hemisphere raised (84) with
Adjacent branch flow passage is equipped with the first fin (801) between raised (81), and the is equipped between the laterally adjacent hemisphere raised (84)
Two fins (802), the top dome height of the hemisphere raised (84) are higher than sprue raised (82) and four branch flow passage protrusions (81)
Highly.
5. a kind of mold for being used to prepare the two-sided shell mould of casting metal microballoon according to claim 4, it is characterised in that: institute
The corner on a diagonal line in the template face of fixing mould (1) is stated equipped on retention bead (85), another diagonal line
Corner is equipped with limit notch (86), convex with the template face upper limit of fixing mould (1) on the template face of the flexible mould (2)
It plays (85) opposite position and is equipped with limit notch (86), and it is corresponding with template face upper limit recess (86) of fixing mould (1)
Position is equipped with retention bead (85).
6. a kind of mold for being used to prepare the two-sided shell mould of casting metal microballoon according to claim 1, it is characterised in that: institute
It states the template face of fixing mould (1) and is equipped with a limited post (7) close to the position of two sides, and the template of flexible mould (2)
Template face upper limit column (7) opposite position of face and fixing mould (1) is equipped with limit hole.
7. a kind of mold for being used to prepare the two-sided shell mould of casting metal microballoon according to claim 1, it is characterised in that: institute
Stating lateral gap (4), slit aperture becomes larger from inside to outside.
8. a kind of mold for being used to prepare the two-sided shell mould of casting metal microballoon according to claim 1, it is characterised in that: institute
Stating fixing mould (1) can be superimposed with two-sided sand plate (8) prepared by flexible mould (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910424544.3A CN109967698A (en) | 2019-05-21 | 2019-05-21 | A kind of mold being used to prepare the two-sided shell mould of casting metal microballoon |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910424544.3A CN109967698A (en) | 2019-05-21 | 2019-05-21 | A kind of mold being used to prepare the two-sided shell mould of casting metal microballoon |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109967698A true CN109967698A (en) | 2019-07-05 |
Family
ID=67073895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910424544.3A Pending CN109967698A (en) | 2019-05-21 | 2019-05-21 | A kind of mold being used to prepare the two-sided shell mould of casting metal microballoon |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109967698A (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5877767A (en) * | 1981-11-02 | 1983-05-11 | Komatsu Ltd | Method and mold for casting ball used for grinding |
CN1390662A (en) * | 2002-06-03 | 2003-01-15 | 广东广研新材料科技股份有限公司 | Mould for casting grinding ball, die plate for casting mould and method for making grinding ball |
CN203380330U (en) * | 2013-07-11 | 2014-01-08 | 湖北泰达机械制造有限公司 | Overlapped pouring device for disc-type casting parts |
CN104028703A (en) * | 2014-06-05 | 2014-09-10 | 遵义久志通用机械有限公司 | Two-sided casting mold of steel ball stack boxes |
CN104588588A (en) * | 2015-02-04 | 2015-05-06 | 东洋铁球(马鞍山)有限公司 | Microsphere production mold |
CN204657416U (en) * | 2015-03-31 | 2015-09-23 | 西华大学 | A kind of combined type Mould for casting ball |
CN205183708U (en) * | 2015-12-09 | 2016-04-27 | 禹州市昆仑模具有限公司 | Arenaceous shell make -up machine is made to blank of car brake disc |
CN107716873A (en) * | 2017-11-19 | 2018-02-23 | 黄石市通达塑料模具有限公司 | A kind of mold for wear-resistant ball production line |
-
2019
- 2019-05-21 CN CN201910424544.3A patent/CN109967698A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5877767A (en) * | 1981-11-02 | 1983-05-11 | Komatsu Ltd | Method and mold for casting ball used for grinding |
CN1390662A (en) * | 2002-06-03 | 2003-01-15 | 广东广研新材料科技股份有限公司 | Mould for casting grinding ball, die plate for casting mould and method for making grinding ball |
CN203380330U (en) * | 2013-07-11 | 2014-01-08 | 湖北泰达机械制造有限公司 | Overlapped pouring device for disc-type casting parts |
CN104028703A (en) * | 2014-06-05 | 2014-09-10 | 遵义久志通用机械有限公司 | Two-sided casting mold of steel ball stack boxes |
CN104588588A (en) * | 2015-02-04 | 2015-05-06 | 东洋铁球(马鞍山)有限公司 | Microsphere production mold |
CN204657416U (en) * | 2015-03-31 | 2015-09-23 | 西华大学 | A kind of combined type Mould for casting ball |
CN205183708U (en) * | 2015-12-09 | 2016-04-27 | 禹州市昆仑模具有限公司 | Arenaceous shell make -up machine is made to blank of car brake disc |
CN107716873A (en) * | 2017-11-19 | 2018-02-23 | 黄石市通达塑料模具有限公司 | A kind of mold for wear-resistant ball production line |
Non-Patent Citations (7)
Title |
---|
《特种铸造手册》编写组: "《特种铸造手册 上册》", 31 October 1976, 机械工业出版社 * |
侯华等: "《液态成型工艺及CAD》", 30 November 2012, 国防工业出版社 * |
农业机械部第三设计研究院: "《内燃机制造技术 上》", 30 April 1981, 第一机械工业部科学技术情报研究所 * |
周平安: "《高性价比水泥生产用耐磨材料应用手册》", 31 October 2014, 中国建材工业出版社 * |
姚军燕等: "《塑料成型模具设计》", 30 April 2016, 西北工业大学出版社 * |
金志明: "《塑料注射成型实用技术》", 31 May 2009, 印刷工业出版社 * |
高绍君等: "《串铸技术及应用》", 31 October 1997, 机械工业出版社 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN209716394U (en) | Brake disc double-deck pouring die device | |
CN208178377U (en) | The process unit of Iron Mould Coated Sand vertical-parting cast bearing lid casting | |
CN108393438A (en) | The process unit and production method of Iron Mould Coated Sand vertical-parting cast bearing lid casting | |
CN105855466A (en) | Brake drum one-casting six-piece V-process casting technological method and brake drum one-casting six-piece V-process casting device | |
CN109570454A (en) | A kind of adjustable sand shooting mechanism and processing method for penetrating sand up and down | |
CN109967698A (en) | A kind of mold being used to prepare the two-sided shell mould of casting metal microballoon | |
CN107363223B (en) | A kind of unilateral bottom gating system and its casting method of aluminum alloy cylinder cover | |
CN109465403A (en) | A kind of casting technique of the small flow casting of immersible pump | |
CN209110156U (en) | Shell moulded casting device of the vacuum in conjunction with pressure | |
CN201940532U (en) | Sand mold of riser for placement of horizontal projected shoulder of casting | |
CN207533921U (en) | A kind of water pump end cap processing casting mold | |
CN207188735U (en) | Base evaporative pattern | |
CN209632071U (en) | A kind of adjustable sand shooting mechanism for penetrating sand up and down | |
CN206229978U (en) | The running and feeding system of gray cast iron Hub Castings casting is produced on DISA lines | |
CN214684158U (en) | Parallel runner for improving production efficiency of castings | |
CN105642834A (en) | Sand mould casting technology using filter screens instead of washburn cores | |
CN206588308U (en) | Coupler body casting system | |
CN205927005U (en) | Foundry goods the gating system | |
CN210877404U (en) | Pulley casting system | |
CN108160936A (en) | A kind of small-sized volute casting mould and casting method | |
CN104338898B (en) | Hydraulic injection molding machine oil internal-circulation type solid plate casting technique | |
CN210754960U (en) | Mold for preparing cast metal microsphere double-sided shell mold | |
CN203900407U (en) | Assembling die for casting steel ingots | |
CN209094466U (en) | A kind of rotating seat precoated sand mold | |
CN209255764U (en) | A kind of casting mould of anti-shrinkage porosite |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190705 |