CN106493295A - A kind of casting technique of large scale magnesium alloy flat structure part - Google Patents
A kind of casting technique of large scale magnesium alloy flat structure part Download PDFInfo
- Publication number
- CN106493295A CN106493295A CN201611024803.6A CN201611024803A CN106493295A CN 106493295 A CN106493295 A CN 106493295A CN 201611024803 A CN201611024803 A CN 201611024803A CN 106493295 A CN106493295 A CN 106493295A
- Authority
- CN
- China
- Prior art keywords
- foundry goods
- structure part
- large scale
- flat structure
- magnesium alloy
- 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
Classifications
-
- 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
- B22C9/088—Feeder heads
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to the casting method of alloy workpiece, discloses a kind of casting technique of large scale magnesium alloy flat structure part, including the preparation before step one, cast；Step 2, smelting and pouring；The step of further including, for example, casting method is sand casting, and gravity-assist pouring, is divided into upper and lower two-part mo(u)lding and alloy melting adopts flux method, gravity-assist pouring.Present invention achieves the high-quality of large scale magnesium alloy flat structure part casts, its indices reaches design requirement, achieves foundry goods flawless, meets the beneficial effects such as I class castings desires without shrinkage cavity defect, internal soundness and fluoroscopic examination.
Description
Technical field
The present invention relates to a kind of casting technique of large scale magnesium alloy flat structure part, is particularly directed to cast
Magnesium alloy structural part, by rational design running gate system, feeding head, cast parameter, obtains high-quality, zero defect casting.
Background technology
Compared with ferrous materials, cast magnesium alloy has that volume mass is little, specific strength is high, corrosion stability good, machinability
The features such as energy is well and casting character is excellent.In order to mitigate construction weight on product, product performance is improved, more and more
Parts employ light material, application of the magnesium alloy in space flight and aviation is more and more extensive, large-scale magnesium alloy parts demand
Amount is also increasing.
For large-scale magnesium alloy flat structure part, its size is big, wall thickness is thin, and usually I classes foundry goods, the inside to foundry goods
Prescription is high, easily produces and owe the defects such as casting, slag inclusion, crackle during castings production, and qualification rate is low.Therefore, for
Large-scale magnesium alloy flat structure part, high quality casting to be obtained, the appropriate design of its casting technique are particularly significant.
In addition, for large-scale magnesium alloy flat structure part, its heat treatment deformation is also a difficult problem, due to product size
Greatly, the phenomenon of warpage is easily produced in heat treatment process, is also difficult to ensure that whether final size is enough by correction.
Content of the invention
It is an object of the invention to the problem for overcoming large-scale magnesium alloy flat structure part qualification rate low, by long-term life
Practice and process summary is produced, a kind of casting technique of flat structure part is proposed, can the flat knot of the large-scale magnesium alloy of effectively solving
Component easily produces the problem for owing the casting flaws such as casting, slag inclusion, crackle and its heat treatment deformation in process of production.
In order to reach foregoing invention purpose, the present invention is to provide one kind by solving the technical scheme that its technical problem is adopted
The casting technique of large scale magnesium alloy flat structure part, comprises the steps：
Preparation before step one, cast；
Using sand casting, gravity-assist pouring, it is divided into upper and lower two-part mo(u)lding；
Allowance is set in the upper plane of foundry goods, lower plane arranges allowance；
Running gate system adopts running channel, and during ensureing to pour into a mould, alloy fully can flow；
Feeding head is set on foundry goods angle, to ensure that heavy wall punch position is without casting flaw at this；
Feeding head is set in the junction of foundry goods internal diameter, totally 8, is distributed on eight angles of foundry goods, to ensure the feeding at this
Effect；
Feeding head is set before the ingate of foundry goods, to ensure the feeding effect at this；
L1 Shaped Iron Chills are set on the ground at eight angles of foundry goods, to improve the rate of cooling at the heavy wall；
Chill before the position before foundry goods ingate arranges cast gate, to reduce the concentration of the heat before cast gate；
Bottom surface chill is set in foundry goods lower surface, to ensure foundry goods according to consecutive solidification in the way of from the bottom up；
Step 2, smelting and pouring；
2.1 dispensing：With ZM6 alloys are taken, Nd amounts are calculated with 2.5%, and Zn amounts are calculated with 0.5%, and Zr amounts are calculated with 1.0%, and remaining is
Magnesium amount, Fe, Si content to be checked：Fe 0.01%, Si 0.01%；
2.2 charging：Crucible is heated to 400 DEG C～500 DEG C, flux is subsequently adding, then furnace charge, charging time is added into crucible
Sequence：Foundry returns → the magnesium ingot of the foundry returns → remelting of non-remelting；
2.3 heat up：Aluminium alloy is melted and is heated up, if pilot process has partial combustion, sprinkle flux immediately, temperature rises to 760
DEG C～780 DEG C when sequentially add Zn ingots, Mg-Nd intermediate alloys and Mg-Zr intermediate alloys；
2.4 refine：Refine is carried out with agitator when aluminium alloy temperature drops to 750 DEG C～770 DEG C；
2.5 stand：Aluminium alloy is warming up to 800 DEG C, is poured into a mould after standing 8 minutes～10 minutes；
2.6 cast：Pouring temperature is 7500 DEG C, cooling cast；
2.7 teeming rising heads：When aluminium alloy rises to 1/3rd height of rising head, with 730 DEG C of aluminium alloy teeming rising heads 1 time.
Large scale magnesium alloy flat structure part casting technique of the present invention, due to taking above-mentioned technological measure, it is achieved that
The casting of large scale magnesium alloy flat structure part, its indices reach design requirement, achieve foundry goods flawless, without shrinkage cavity
Defect, the beneficial effect such as superior in quality.
Description of the drawings
Fig. 1 is the front view of large scale magnesium alloy flat structure part；
Fig. 2 is the A-A sectional views of large scale magnesium alloy flat structure part；
Fig. 3 is the B-B sectional views of large scale magnesium alloy flat structure part.
Specific embodiment
The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings.
Fig. 1 ~ Fig. 3 is the structure chart and artwork of the large scale magnesium alloy flat structure part for applying the inventive method manufacture.
Fig. 1 is the front view of large scale magnesium alloy flat structure part；Fig. 2 is the A-A sectional views of large scale magnesium alloy flat structure part；Figure
3 is the B-B sectional views of large scale magnesium alloy flat structure part.In Fig. 1 ~ 3：1st, structural member upper surface；2nd, structural member lower surface；3、
Structural member rib；4th, rising head M1；5th, rising head M2；6th, rising head M3；7th, ingate；8th, cross gate；9th, sprue；10th, steel wool；
11st, iron sheet drainage screen；12nd, chill L1；13rd, chill L2；14th, chill L3
As shown in the figures above, the profile chi of the large scale magnesium alloy flat structure part of the maximum cast using the inventive method is intended to
Very little it is：1300×1000×80(mm)（Length × width × height）, which is flat structure part, and upper flat wall thickness is 6mm（1 in diagram）,
Lower plane wall thickness is 8mm（2 in diagram）, mid portion reinforcement is 6mm（3 in diagram）.
, without casting flaws such as shrinkage cavity, crackle, cold shuts, internal soundness reaches I classes foundry goods in HB7780 will for above-mentioned castings desire
Ask, foundry goods carries out fluoroscopic examination.A kind of casting technique of large scale magnesium alloy flat structure part of the present invention is wanted according to above-mentioned
Ask, take following processing step：
Preparation before step one, cast
Before cast, technological design takes following measures：
1.1 casting methods are sand casting, and gravity-assist pouring is divided into upper and lower two-part mo(u)lding（See Fig. 1）；
1.2 arrange allowance 6mm in the upper plane of foundry goods, and lower plane arranges allowance 5mm；
1.3 Casting shrinkages are designed as 1.1%；
1.4 design pouring temperatures are 750 DEG C, it is ensured that foundry goods to fill type complete；
1.5 running gate systems adopt flat ingate 7, each side there is 6, and are located at top box, close during ensureing to pour into a mould
Gold fully can flow, and will not occur the phenomenon for owing casting because molten metal cooling is too fast, and its size is 30 × 25 (mm) (wide × high)；
1.6 running gate systems are dimensioned to 40 × 35 × 40 (mm) (upper end × lower end × height) using trapezoidal cross gate 8；
1.7 running gate systems are dimensioned to 22mm using circular sprue 9, and gradient is 1 °.
1.8 arrange M1 feeding heads 4 on foundry goods angle, to ensure at this heavy wall punch position without casting flaw, totally 8,
It is distributed on eight angles of foundry goods, its size is 50mm（Long）×60mm（Wide）× 200mm (height), width gradient：6°；
1.9 arrange M2 feeding heads 5 in the junction of foundry goods internal diameter, to ensure the feeding effect at this, it is to avoid shrinkage cavity contracting occur
Pine, totally 4, its size is 80mm（Long）×40mm（Wide）× 200mm (height), width gradient：6°；
1.10 arrange M3 feeding heads 6 before the ingate of foundry goods, to ensure the feeding effect at this, it is to avoid due to heat before cast gate
Amount is high, at a temperature of slow down, produce shrinkage cavity shrinkage porosity, totally 12, its size is 100mm（Long）×40mm（Wide）× 200mm (height), wide
Degree direction gradient：6°；
1.11 arrange L1 Shaped Iron Chills 12 on the ground at eight angles of foundry goods, to improve the rate of cooling at the heavy wall, it is to avoid casting
The generation of defect, thickness are 20mm；
1.12 before foundry goods ingate 7 position arrange cast gate before chill 13, with reduce the heat before cast gate concentration, it is to avoid shrinkage cavity
The generation of shrinkage porosite, thickness are 20mm；
1.13 arrange bottom surface chill 14 in foundry goods lower surface 2, to ensure foundry goods according to consecutive solidification in the way of from the bottom up, it is ensured that
The internal soundness of foundry goods, its thickness are 5mm；
1.14 arrange iron sheet drainage screen 11 and steel wool 12 in the trapezoidal cross gate 8 of running gate system, and steel wool is placed on sprue
Corresponding position, drainage screen are placed on the outside of steel wool, can play a part of good pushing off the slag.
Step 2, smelting and pouring；Further include the steps：
Alloy melting adopts flux method, gravity-assist pouring
2.1 dispensing：With ZM6 alloys are taken, Nd amounts are calculated with 2.5%, and Zn amounts are calculated with 0.5%, and Zr amounts are calculated with 1.0%, and remaining is
Magnesium amount, Fe, Si content to be checked：Fe 0.01%, Si 0.01%；
2.2 charging：Crucible is heated to 400 DEG C～500 DEG C, flux is subsequently adding, then furnace charge, charging time is added into crucible
Sequence：Foundry returns → the magnesium ingot of the foundry returns → remelting of non-remelting；
2.3 heat up：Aluminium alloy is melted and is heated up, if pilot process has partial combustion, sprinkle flux immediately, temperature rises to 760
DEG C～780 DEG C when sequentially add Zn ingots, Mg-Nd intermediate alloys and Mg-Zr intermediate alloys；
2.4 refine：Refine is carried out with agitator when aluminium alloy temperature drops to 750 DEG C～770 DEG C.Method of refining：In vertical direction
Under drastically stir, constantly on liquid stream crest, spread refining agent during stirring.The agitation time is 15 minutes～20 minutes；
2.5 stand：Aluminium alloy is warming up to 800 DEG C, is poured into a mould after standing 8 minutes～10 minutes；
2.6 cast：Pouring temperature is 7500 DEG C, cooling cast；
2.7 teeming rising heads：When aluminium alloy rises to 1/3rd height of rising head, with 730 DEG C of aluminium alloy teeming rising heads 1 time.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (10)
1. a kind of casting technique of large scale magnesium alloy flat structure part, it is characterised in that comprise the steps：
Preparation before step one, cast；
Using sand casting, gravity-assist pouring, it is divided into upper and lower two-part mo(u)lding；
Allowance is set in the upper plane of foundry goods, lower plane arranges allowance；
Running gate system adopts running channel, and during ensureing to pour into a mould, alloy fully can flow；
Feeding head is set on foundry goods angle, to ensure that heavy wall punch position is without casting flaw at this；
Feeding head is set in the junction of foundry goods internal diameter, totally 8, is distributed on eight angles of foundry goods, to ensure the feeding at this
Effect；
Feeding head is set before the ingate of foundry goods, to ensure the feeding effect at this；
L1 Shaped Iron Chills are set on the ground at eight angles of foundry goods, to improve the rate of cooling at the heavy wall；
Chill before the position before foundry goods ingate arranges cast gate, to reduce the concentration of the heat before cast gate；
Bottom surface chill is set in foundry goods lower surface, to ensure foundry goods according to consecutive solidification in the way of from the bottom up；
Step 2, smelting and pouring；
2.1 dispensing：With ZM6 alloys are taken, Nd amounts are calculated with 2.5%, and Zn amounts are calculated with 0.5%, and Zr amounts are calculated with 1.0%, and remaining is
Magnesium amount, Fe, Si content to be checked：Fe 0.01%, Si 0.01%；
2.2 charging：Crucible is heated to 400 DEG C～500 DEG C, flux is subsequently adding, then furnace charge, charging time is added into crucible
Sequence：Foundry returns → the magnesium ingot of the foundry returns → remelting of non-remelting；
2.3 heat up：Aluminium alloy is melted and is heated up, if pilot process has partial combustion, sprinkle flux immediately, temperature rises to 760
DEG C～780 DEG C when sequentially add Zn ingots, Mg-Nd intermediate alloys and Mg-Zr intermediate alloys；
2.4 refine：Refine is carried out with agitator when aluminium alloy temperature drops to 750 DEG C～770 DEG C；
2.5 stand：Aluminium alloy is warming up to 800 DEG C, is poured into a mould after standing 8 minutes～10 minutes；
2.6 cast：Pouring temperature is 7500 DEG C, cooling cast；
2.7 teeming rising heads：When aluminium alloy rises to 1/3rd height of rising head, with 730 DEG C of aluminium alloy teeming rising heads 1 time.
2. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：Allowance 6mm is set in the upper plane of foundry goods, lower plane arranges allowance 5mm.
3. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：Casting shrinkage is designed as 1.1%.
4. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：Design pouring temperature is 750 DEG C, it is ensured that foundry goods to fill type complete.
5. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：Running gate system adopts flat ingate, each side there is 6, and is located at top box, during ensureing to pour into a mould
Alloy fully can flow, and its size is wide × high：30mm×25mm.
6. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：Running gate system is dimensioned to upper end × lower end × high 40mm × 35mm × 40mm using trapezoidal cross gate.
7. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：Running gate system is dimensioned to 22mm using circular sprue, and gradient is 1 °.
8. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：On foundry goods angle arrange feeding head, its size be length × width × height 50mm × 60mm × 200mm, width
Gradient：6°；Feeding head is set in the junction of foundry goods internal diameter, its size is length × width × height 80mm × 40mm × 200mm, wide
Degree direction gradient：6°；Before the ingate of foundry goods arrange feeding head, totally 12, its size be length × width × height 100mm ×
40mm × 200mm, width gradient：6°.
9. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that institute
State in step 1：L1 Shaped Iron Chills are set on the ground at eight angles of foundry goods, thickness is 20mm；Position before foundry goods ingate sets
Chill before cast gate is put, thickness is 20mm；In foundry goods lower surface, bottom surface chill is set, its thickness is 5mm；Trapezoidal in running gate system
Iron sheet drainage screen and steel wool are set in cross gate, and steel wool is placed on the corresponding position of sprue, and drainage screen is placed on steel wire
On the outside of cotton.
10. a kind of casting technique of large scale magnesium alloy flat structure part as claimed in claim 1, it is characterised in that
In the step 2.4：Refine is drastically stirred up and down using vertical direction, constantly spreads refining agent on liquid stream crest, stir during stirring
The dynamic time is 15 minutes～20 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611024803.6A CN106493295B (en) | 2016-11-18 | 2016-11-18 | A kind of casting technique of large scale magnesium alloy flat structure part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611024803.6A CN106493295B (en) | 2016-11-18 | 2016-11-18 | A kind of casting technique of large scale magnesium alloy flat structure part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106493295A true CN106493295A (en) | 2017-03-15 |
| CN106493295B CN106493295B (en) | 2018-04-03 |
Family
ID=58327420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611024803.6A Active CN106493295B (en) | 2016-11-18 | 2016-11-18 | A kind of casting technique of large scale magnesium alloy flat structure part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106493295B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112551A (en) * | 2020-01-14 | 2020-05-08 | 山西神舟航天科技有限公司 | Forming method of large-size magnesium alloy casting |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927750A (en) * | 1982-08-06 | 1984-02-14 | Toyota Motor Corp | Casting method of magnesium alloy |
| CN1666830A (en) * | 2005-04-07 | 2005-09-14 | 中国南方航空动力机械公司 | Method for casting large-scale complex thin-wall Mg alloy castings |
| CN101748299A (en) * | 2008-12-02 | 2010-06-23 | 上海航天精密机械研究所 | Method for manufacturing cast magnesium alloy |
| CN102019351A (en) * | 2010-12-21 | 2011-04-20 | 宁夏共享集团有限责任公司 | Method for producing spheroidal graphite iron casting with high strength and thick and uniform wall |
| CN102049472A (en) * | 2009-11-03 | 2011-05-11 | 上海航天精密机械研究所 | Method for casting special case casting core mould |
| CN102049494A (en) * | 2009-11-03 | 2011-05-11 | 上海航天精密机械研究所 | Casting method of aluminum-magnesium alloy movable coil for vibrating table |
| CN102909320A (en) * | 2011-08-02 | 2013-02-06 | 上海航天精密机械研究所 | Magnesium alloy sand mold precise casting method |
| CN103667755A (en) * | 2012-09-21 | 2014-03-26 | 上海航天精密机械研究所 | Rare earth-magnesium alloy smelting and purifying method |
| CN104550863A (en) * | 2013-10-29 | 2015-04-29 | 青岛天恒机械有限公司 | Magnesium alloy ZM6 sand mould casting process |
-
2016
- 2016-11-18 CN CN201611024803.6A patent/CN106493295B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927750A (en) * | 1982-08-06 | 1984-02-14 | Toyota Motor Corp | Casting method of magnesium alloy |
| CN1666830A (en) * | 2005-04-07 | 2005-09-14 | 中国南方航空动力机械公司 | Method for casting large-scale complex thin-wall Mg alloy castings |
| CN101748299A (en) * | 2008-12-02 | 2010-06-23 | 上海航天精密机械研究所 | Method for manufacturing cast magnesium alloy |
| CN102049472A (en) * | 2009-11-03 | 2011-05-11 | 上海航天精密机械研究所 | Method for casting special case casting core mould |
| CN102049494A (en) * | 2009-11-03 | 2011-05-11 | 上海航天精密机械研究所 | Casting method of aluminum-magnesium alloy movable coil for vibrating table |
| CN102019351A (en) * | 2010-12-21 | 2011-04-20 | 宁夏共享集团有限责任公司 | Method for producing spheroidal graphite iron casting with high strength and thick and uniform wall |
| CN102909320A (en) * | 2011-08-02 | 2013-02-06 | 上海航天精密机械研究所 | Magnesium alloy sand mold precise casting method |
| CN103667755A (en) * | 2012-09-21 | 2014-03-26 | 上海航天精密机械研究所 | Rare earth-magnesium alloy smelting and purifying method |
| CN104550863A (en) * | 2013-10-29 | 2015-04-29 | 青岛天恒机械有限公司 | Magnesium alloy ZM6 sand mould casting process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112551A (en) * | 2020-01-14 | 2020-05-08 | 山西神舟航天科技有限公司 | Forming method of large-size magnesium alloy casting |
| CN111112551B (en) * | 2020-01-14 | 2021-03-09 | 山西神舟航天科技有限公司 | Forming method of large-size magnesium alloy casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106493295B (en) | 2018-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108531803B (en) | A kind of casting method of spheroidal graphite cast-iron valve body | |
| CN107838390A (en) | A kind of method for improving big cross section peritectic steel continuous casting billet quality | |
| CN101279362B (en) | Method for manufacturing low-segregation large-sized steel ingot by quickening cooling of bottom and lateral wall | |
| CN102886501B (en) | Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof | |
| CN104195448B (en) | Casting alloy material and the technique casting ocean platform canine tooth roller box foundry goods with it | |
| CN111910118B (en) | Method for forming nodular cast iron flywheel for high-power diesel engine | |
| CN104439124A (en) | Method for restraining macrosegregation of large steel ingot | |
| CN104174819B (en) | The climb casting technique of machine third-level planetary frame of a kind of ocean platform | |
| CN102371345B (en) | Method for casting ductile iron casting of air-conditioning compressor | |
| CN201231310Y (en) | Low-segregation large-size ingot obtaining device through quickening the cooling of the bottom, lateral wall | |
| CN102601338A (en) | Method for producing large magnesium alloy ring by means of centrifugal casting | |
| CN108971431A (en) | The manufacturing method of Press Tools for Automobiles magnesium iron cutter block class casting | |
| CN201342480Y (en) | Inner cooling device for prohibiting macrosegregation of large-sized steel ingot | |
| CN117245064A (en) | Process and equipment for controlling crystallization structure of integral casting roller | |
| CN101406937A (en) | Inner-cooling method for inhibiting gross segregation in large-sized steel ingot | |
| CN101596590B (en) | Method for inhibiting large steel ingot from macrosegregation by mechanical stirring | |
| CN104174820A (en) | Casting process of two-stage planet carrier of climbing machine for ocean platform | |
| CN105251954B (en) | A kind of ingot steel casting mould and pouring procedure | |
| CN104174816B (en) | Casting die and the casting technique of ocean platform zero defect pinion stand | |
| CN105568077A (en) | Aluminum-silicon eutectic alloy rod used for welding and preparation technique of aluminum-silicon eutectic alloy rod | |
| CN106493295B (en) | A kind of casting technique of large scale magnesium alloy flat structure part | |
| CN202762983U (en) | Efficient production tool of wide and thick slabs for wide and thick plate rolling mill | |
| CN107150109A (en) | The method and its device of composite ingot are dynamically poured into a mould in a kind of two-way cooling | |
| CN104249142B (en) | The pressure casting processes of the sublimate homogeneous densification big strand of grain refining iron and steel | |
| CN104439147A (en) | Method for treating casting contraction cavities |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220221 Address after: 226000 No. 399, Xingye Road, Sijia Town, Haimen District, Nantong City, Jiangsu Province Patentee after: Xinjiang Technology (Jiangsu) Co.,Ltd. Address before: 201600 No. 1, Guide Road, Shanghai, Songjiang District Patentee before: SHANGHAI SPACEFLIGHT PRECISION MACHINERY INSTITUTE |
|
| TR01 | Transfer of patent right |