CN100338248C - Aluminium alloy for semi solid state shaping and preparation method of its semi solid state blank material - Google Patents
Aluminium alloy for semi solid state shaping and preparation method of its semi solid state blank material Download PDFInfo
- Publication number
- CN100338248C CN100338248C CNB2003101153769A CN200310115376A CN100338248C CN 100338248 C CN100338248 C CN 100338248C CN B2003101153769 A CNB2003101153769 A CN B2003101153769A CN 200310115376 A CN200310115376 A CN 200310115376A CN 100338248 C CN100338248 C CN 100338248C
- Authority
- CN
- China
- Prior art keywords
- alloy
- semi
- solid state
- preparation
- semi solid
- 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.)
- Expired - Lifetime
Links
- 239000007787 solid Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 title abstract description 8
- 238000007493 shaping process Methods 0.000 title description 3
- 239000000463 material Substances 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 59
- 239000000956 alloy Substances 0.000 claims abstract description 59
- 229910018464 Al—Mg—Si Inorganic materials 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 8
- 238000007670 refining Methods 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 claims description 2
- 238000007499 fusion processing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000009749 continuous casting Methods 0.000 abstract 1
- 238000004886 process control Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000007669 thermal treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010099 solid forming Methods 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Abstract
The present invention discloses a novel Al-Mg-Si series alloy for semi-solid formation. The alloy has the components of 1 to 5W% of Mg, 3 to 11W% of Si, 0.1 to 2.0W% of Cu, and at least one of the following elements of 0 to 0.5W% of Ba, 0.01 to 1.0W% of Mn, 0.01 to 0.35W% of Cr, 0 to 0.2W% of Ti, 0 to 0.3W% of Sr, 0.1 to 1.0W% of Fe and aluminum in balancing amount. The alloy is prepared through the procedures of smelting, refining, electromagnetic mixing, semi-continuous casting, etc. The novel alloy can reduce the process control cost of semi-solid formation, the cost of the alloy is equivalent to that of the traditional casting Al-Mg-Si series aluminium alloy, and the mechanical property is obviously higher than the Al-Mg-Si series alloy with standard labels.
Description
Technical field
The present invention relates to preparation method and prepared Al-Mg-Si thereof that a kind of Al-Mg-Si is the alloy semi-solid blank is the alloy semi-solid blank, the invention belongs to the Semi-Solid Metals Forming technical field.
Background technology
Since the semi-solid metal forming technology had been invented by early 1970s Massachusetts Institute Technology (MIT), this technology had caused the extensive concern of various countries.Compare with other metal forming method, this technology has series of advantages: the various casting flaws that produced in the time of 1) can reducing even avoid liquid the shaping, as pore, shrinkage porosite, segregation etc.; 2) can alleviate thermal shocking, its life-span is increased substantially building mortion especially mould; 3) solidification shrinkage is little, the casting dimension accuracy height, and machining amount reduces greatly; 4) compare with metal solid molding method, the stress of fluidity of semi-solid-state metal significantly reduces, and forming speed is higher, and the more complicated parts that can be shaped.
Semi-solid state forming technique is applicable to the alloy system with the liquid-solid coexistence of broad.In three more than ten years in the past, involved alloy has Al when this technology of research, Mg, and Zn, Ni, Cu, Fe, Sn etc., wherein, to the maturation the most of aluminium alloy research, and the early start industrial applications.Most popular in aluminium alloy is cast aluminium alloy A356, A357, and this is because these two kinds of alloys are widely used and have suitable solid-liquid temperature range, so research emphasis is to be carrier with the alloy, studies the theoretical question and the technological problems of this technology itself.But these two kinds of alloys can not be given full play to the advantage of semi-solid state forming technique, thereby have limited the application that further develops of this technology.
Al-Mg-Si is that cast aluminium alloy is the cast aluminium alloy of widespread use, and hypoeutectic have ZL101, Zl101A (A356), ZL104, YL104, ZL114A (A357), ZL115 and a ZL116.The composition range of these alloys is roughly Si:4.8～10.5wt%; Mg:0.17～0.7wt%.Wherein the main effect of Si is a flowability of improving alloy, reduces hot cracking tendency, reduces and loosens, and improves resistance to air loss, and the main effect of Mg is and Si forms strengthening phase Mg
2Si, the intensity of raising alloy after the thermal treatment.
Summary of the invention
The purpose of this invention is to provide the preparation method that a kind of Al-Mg-Si is the alloy semi-solid blank.The prepared alloy billet of this method can be given full play to the characteristics of semi-solid state forming technique, and with the Al-Mg-Si of standard brand be cast aluminium alloy mutually specific energy significantly improve intensity or plasticity.
It is the alloy semi-solid blank that another object of the present invention provides a kind of Al-Mg-Si.
For achieving the above object, the present invention takes following technical scheme:
A kind of Al-Mg-Si is the preparation method of alloy semi-solid blank, and this method comprises the steps:
(1), adopting Al-Mg-Si is alloy, its composition is Mg:1.83～5wt%, Si:4.74～11wt%, Cu:0.1～0.8wt%, and following at least a in the column element, Ba:0～0.5wt%, Mn:0.01～1.0wt%, Cr:0.01～0.35wt%, Ti:0～0.2wt%, Sr:0～0.3wt%, Fe:0.1～1.0wt%, all the other are aluminium;
(2), adopt conventional method to carry out melting, refining and slagging-off the alloy in the step (1);
(3), then the alloy melt metaideophone is advanced tundish and carries out the induction stirring semicontinuous casting, tundish temperature is controlled at 700～720 ℃, the induction stirring frequency is 10～100HZ, 595～600 ℃ of crystallizer graphite bushing place temperature are made semi-solid blank.
A kind of Al-Mg-Si is the alloy semi-solid blank, is that the Al-Mg-Si of employing method for preparing is the alloy semi-solid blank.
The equipment of the induction stirring semicontinuous casting of being adopted is conventional equipment, includes uppermost tundish, is positioned at intermediary heat top and nethermost crystallizer and graphite bushing.
In the method for the invention, have simultaneously by the tensile property after the semi-solid blank thermal treatment that induction stirring or mechanical stirring obtained:
(1), the tensile strength that is higher than 300MPa;
(2), the yield strength that is higher than 280MPa;
(3), be higher than 3% unit elongation.
In the method for the invention, in described step (2), in the described fusion process, control alloy melt temperature is 710～730 ℃.
In the method for the invention, in described step (2), control alloy melt temperature is 700～710 ℃ after the refining.
In alloy of the present invention, formed Mg in the alloy
2Si can not have a negative impact to the plasticity of alloy mutually.
The characteristics that the given alloy of the present invention is fit to semi-solid-state shaping mainly show: 1) alloy requires to reduce to control accuracy of temperature, thereby has reduced the technology controlling and process cost when semi-solid rheological and thixotropic forming; 2) alloy requires to reduce to the control of composition, and promptly the minor fluctuations of composition can not cause the fluctuation of alloy rheological, thixotropy and mechanical property; 3) alloy reduces the related process parameter request, or under identical processing parameter condition, can obtain more excellent semi-solid blank or slurry.
Given another important feature of alloy of the present invention is the mechanical property that can significantly improve alloy.Mg content is generally lower in the Al-Mg-Si alloy of standard brand, mainly is because strengthening phase Mg
2The solid solubility of Si in Al has certain limitation (1.85wt%).Can improve alloy strength though Mg content improves, reduce plasticity.The Mg of solid solution not after the solution treatment during Mg too high levels
2Si is distributed in crystal boundary mutually and can makes a big impact to plasticity.The alloy that the present invention provides can reduce or avoid Mg greatly by the interpolation of suitable semi-solid blank preparation technology, trace alloying element and the optimization of heat treatment process parameter
2The disadvantageous effect of the relative plasticity of Si makes that simultaneously alloy strength significantly improves.
Description of drawings
Fig. 1 is an alloy typical case microtexture photo (100 *)
Fig. 2 is the typical microtexture photo of alloy after the thermal treatment
Embodiment
Embodiment 1:
Induction stirring semicontinuous casting legal system is equipped with the semi-solid blank of novel alloy, and used alloying constituent is Al-5.78%Si-2.34Mg-0.8Cu-0.25Fe-0.15Mn; This composition range is Si:5.78wt%, Mg:2.34wt%, and Cu:0.8wt%, Fe:0.25wt%, Mn:0.15wt%, all the other are aluminium.The liquidus temperature of alloy is 623.8 ℃, earlier with this alloy in medium-frequency induction furnace after the melting, the alloy melt temperature is 710～730 ℃, melt changed over to leave standstill in the stove, carry out refining and slagging-off, melt temperature is 700～710 ℃ after the refining, then the metal melt metaideophone is advanced tundish and carries out the induction stirring semicontinuous casting.Tundish temperature is controlled at 700 ℃, and the induction stirring frequency is 10HZ, input voltage 400V.595～600 ℃ of crystallizer graphite bushing place temperature.Alloy typical case microtexture as shown in Figure 1.
Embodiment 2:
Used alloy A l-4.74Si-1.83Mg-0.8Cu-0.23Fe-0.1Ti-0.2Sr, this composition range are Si:4.74wt%, Mg:1.83wt%, and Cu:0.8wt%, Fe:0.23wt%, Ti:0.1wt%, Sr:0.2wt%, all the other are aluminium.After earlier this alloy being melted, after 720 ℃ of refinings, leave standstill slagging-off in 10 minutes in resistance furnace, put into magnetic stirrer then and stir, quick water-cooled when temperature is reduced to 605 ℃.Thus obtained semi-solid blank tensile property is as follows: σ
b=205MPa, σ
s=160MPa, δ
5=3.5%.
This semi-solid blank is heat-treated.System of heat treatment process is 540 ℃ * 2h solid solution, 170 ℃ * 6 hours timeliness.The typical microtexture of alloy as shown in Figure 2 after the thermal treatment.The tensile property test result of alloy is as follows after the thermal treatment: σ
b=318MPa, σ
s=285MPa, δ
5=4%.
Claims (2)
1, a kind of Al-Mg-Si is the preparation method of alloy semi-solid blank, it is characterized in that: this method comprises the steps:
(1), adopts the alloy of following composition range: Mg:1.83～5wt%, Si:4.74～11wt%, Cu:0.1～0.8wt%, at least a in the column element under reaching, Ba:0～0.5wt%, Mn:0.01～1.0wt%, Cr:0.01～0.35wt%, Ti:0～0.2wt%, Sr:0～0.3wt%, Fe:0.1～1.0wt%, all the other are aluminium;
(2), adopt conventional method to carry out melting, refining and slagging-off the alloy in the step (1); In the fusion process, control alloy melt temperature is 710～730 ℃; Control alloy melt temperature is 700～710 ℃ after the refining;
(3), then the alloy melt metaideophone is advanced tundish and carries out the induction stirring semicontinuous casting, tundish temperature is controlled at 700～720 ℃, the induction stirring frequency is 10～100HZ, 595～600 ℃ of crystallizer graphite bushing place temperature are made semi-solid blank.
2, a kind of Al-Mg-Si is the alloy semi-solid blank, it is characterized in that: the prepared Al-Mg-Si of preparation method that is employing claim 1 is the alloy semi-solid blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101153769A CN100338248C (en) | 2003-11-20 | 2003-11-20 | Aluminium alloy for semi solid state shaping and preparation method of its semi solid state blank material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101153769A CN100338248C (en) | 2003-11-20 | 2003-11-20 | Aluminium alloy for semi solid state shaping and preparation method of its semi solid state blank material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1619004A CN1619004A (en) | 2005-05-25 |
| CN100338248C true CN100338248C (en) | 2007-09-19 |
Family
ID=34760421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101153769A Expired - Lifetime CN100338248C (en) | 2003-11-20 | 2003-11-20 | Aluminium alloy for semi solid state shaping and preparation method of its semi solid state blank material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100338248C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327013C (en) * | 2005-09-09 | 2007-07-18 | 清华大学 | Fast production of subsphaeroidal crystal tissue semi-solid aluminium alloy |
| US9038704B2 (en) | 2011-04-04 | 2015-05-26 | Emerson Climate Technologies, Inc. | Aluminum alloy compositions and methods for die-casting thereof |
| CN104480355B (en) * | 2014-12-04 | 2016-09-14 | 绥阳县耐环铝业有限公司 | A kind of silico-aluminum and preparation method thereof |
| CN104451239B (en) * | 2014-12-04 | 2016-08-24 | 兰州理工大学 | Al3tipthe powder thixotropic forming preparation method of/Al base in-situ composite |
| CN105420564A (en) * | 2015-12-15 | 2016-03-23 | 深圳市鑫雅豪精密五金有限公司 | High-end aluminium alloy material MH-03 and preparation method thereof |
| CN105525158B (en) * | 2016-02-19 | 2018-02-13 | 福建省金瑞高科有限公司 | A kind of semisolid pressure casting aluminum alloy materials and the method using the material die cast |
| CN107058816A (en) * | 2017-01-23 | 2017-08-18 | 沈阳工业大学 | A kind of semi-solid-state shaping hypereutectic Al Si alloys and preparation method thereof |
| CN107858562A (en) * | 2017-11-21 | 2018-03-30 | 益阳仪纬科技有限公司 | Engine cylinder block aluminium alloy and preparation method thereof |
| CN108251714B (en) * | 2017-12-25 | 2020-05-08 | 广州金邦液态模锻技术有限公司 | Extrusion casting high-strength and high-toughness aluminum alloy and extrusion casting method thereof |
| CN108796317B (en) * | 2018-06-25 | 2020-09-11 | 苏州慧驰轻合金精密成型科技有限公司 | Semisolid extrusion casting aluminum alloy suitable for new energy automobile and preparation method |
| CN113061787A (en) * | 2021-03-18 | 2021-07-02 | 大亚车轮制造有限公司 | High-strength high-toughness Al-Si-Cu-Mg-Cr-Mn-Ti series casting alloy and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122115A (en) * | 1994-01-17 | 1996-05-08 | 皮奇尼铝公司 | Semi-solid metal forming method |
| JPH10158756A (en) * | 1996-11-28 | 1998-06-16 | Ube Ind Ltd | Method for molding semi-molten metal |
| US5846350A (en) * | 1995-04-14 | 1998-12-08 | Northwest Aluminum Company | Casting thermal transforming and semi-solid forming aluminum alloys |
| US5879478A (en) * | 1996-03-20 | 1999-03-09 | Aluminium Pechiney | Process for semi-solid forming of thixotropic aluminum-silicon-copper alloy |
| US5911843A (en) * | 1995-04-14 | 1999-06-15 | Northwest Aluminum Company | Casting, thermal transforming and semi-solid forming aluminum alloys |
| JP2000303134A (en) * | 1999-04-20 | 2000-10-31 | Furukawa Electric Co Ltd:The | Aluminum base alloy for semisolid working and production of worked member therefrom |
| US6200396B1 (en) * | 1999-01-21 | 2001-03-13 | Aluminium Pechinay | Hypereutectic aluminium-silicon alloy product for semi-solid forming |
| US6547896B2 (en) * | 1999-07-28 | 2003-04-15 | Ruag Munition | Process for the production of a material made of a metal alloy |
| JP2003183756A (en) * | 2001-12-14 | 2003-07-03 | Ube Machinery Corporation Ltd | Aluminum alloy for semi-solid molding |
-
2003
- 2003-11-20 CN CNB2003101153769A patent/CN100338248C/en not_active Expired - Lifetime
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122115A (en) * | 1994-01-17 | 1996-05-08 | 皮奇尼铝公司 | Semi-solid metal forming method |
| US5846350A (en) * | 1995-04-14 | 1998-12-08 | Northwest Aluminum Company | Casting thermal transforming and semi-solid forming aluminum alloys |
| US5911843A (en) * | 1995-04-14 | 1999-06-15 | Northwest Aluminum Company | Casting, thermal transforming and semi-solid forming aluminum alloys |
| US5879478A (en) * | 1996-03-20 | 1999-03-09 | Aluminium Pechiney | Process for semi-solid forming of thixotropic aluminum-silicon-copper alloy |
| JPH10158756A (en) * | 1996-11-28 | 1998-06-16 | Ube Ind Ltd | Method for molding semi-molten metal |
| US6200396B1 (en) * | 1999-01-21 | 2001-03-13 | Aluminium Pechinay | Hypereutectic aluminium-silicon alloy product for semi-solid forming |
| JP2000303134A (en) * | 1999-04-20 | 2000-10-31 | Furukawa Electric Co Ltd:The | Aluminum base alloy for semisolid working and production of worked member therefrom |
| US6547896B2 (en) * | 1999-07-28 | 2003-04-15 | Ruag Munition | Process for the production of a material made of a metal alloy |
| JP2003183756A (en) * | 2001-12-14 | 2003-07-03 | Ube Machinery Corporation Ltd | Aluminum alloy for semi-solid molding |
Non-Patent Citations (1)
| Title |
|---|
| AlSi10Cu2Mg合金的半固态触变成形 张永忠，张奎，刘国钧，张景新，樊建中，徐骏，特种铸造及有色合金，第6期 1999 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1619004A (en) | 2005-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108396204B (en) | Hypoeutectic aluminum-silicon alloy casting and process method for improving performance thereof | |
| CN111690849A (en) | Refining method of iron-rich phase in Al-Si series die-casting aluminum alloy and alloy | |
| CN109778027B (en) | Preparation method of high-strength A356 alloy | |
| CN111197132A (en) | Non-heat treatment type high-strength die-casting aluminum alloy and preparation method thereof | |
| CN100338248C (en) | Aluminium alloy for semi solid state shaping and preparation method of its semi solid state blank material | |
| CN108977702B (en) | Aluminum alloy and preparation method of aluminum alloy casting | |
| CN111172435A (en) | Process method for casting aluminum-silicon alloy by modifying rare earth | |
| CN110079712B (en) | Cast high-toughness die-casting aluminum-silicon alloy and preparation method and application thereof | |
| CN111155000A (en) | Rapid heat treatment strengthening high-strength and high-toughness aluminum alloy material for die-casting thin-walled piece and preparation method and application thereof | |
| CN111690844B (en) | Eutectic Al-Fe-Mn-Si-Mg die casting alloy and preparation method and application thereof | |
| CN114231802A (en) | Rare earth aluminum alloy bar for forging aluminum alloy hub and preparation method thereof | |
| CN101649405B (en) | Al-Mg-Mn-Zr-Sr alloy and preparation method thereof | |
| CN113774259A (en) | Al-Cu-Mg alloy and method for eliminating harmful iron-containing phase | |
| CN111809086B (en) | Die-casting aluminum alloy and preparation method and application thereof | |
| CN114381640B (en) | High-strength aluminum alloy material for rheocasting and application method thereof | |
| CN111876637A (en) | Heat-resistant and wear-resistant Al-Si-Cu-Ni aluminum alloy and preparation method and application thereof | |
| JPH0967635A (en) | Aluminum alloy casting excellent in strength and toughness, by high pressure casting, and its production | |
| CN1257992C (en) | Preparation of high-strength deforming magnesium alloy | |
| CN111647785A (en) | High-strength die-casting aluminum alloy and preparation method thereof | |
| CN115679159B (en) | Al-Ni-Mn alloy material for high-temperature brazing and rheological die casting forming method thereof | |
| CN110938763B (en) | Preparation method of die-casting aluminum alloy material capable of being anodized and die-casting method | |
| CN1157485C (en) | Al-Si-Mn alloy for deoxidizing molten steel and as alloy additive and its preparing process | |
| CN111485139A (en) | Al-RE-Y alloy and preparation method thereof | |
| CN111074117A (en) | Low-cost high-performance Al-Mg-Mn aluminum alloy and preparation method thereof | |
| CN115874097B (en) | High-plasticity high-heat-conductivity cast magnesium alloy suitable for die casting and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190626 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: YOUYAN ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: 100088, 2, Xinjie street, Beijing Patentee before: General Research Institute for Nonferrous Metals |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210720 Address after: 101407 No.11, Xingke East Street, Yanqi Economic and Technological Development Zone, Huairou District, Beijing Patentee after: Youyan metal composite technology Co.,Ltd. Address before: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee before: YOUYAN ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070919 |