CN101775564B - Method for controlling variation of grain refinement ability of aluminum-titanium-boron alloy during pressure processing - Google Patents
Method for controlling variation of grain refinement ability of aluminum-titanium-boron alloy during pressure processing Download PDFInfo
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- CN101775564B CN101775564B CN2010101100530A CN201010110053A CN101775564B CN 101775564 B CN101775564 B CN 101775564B CN 2010101100530 A CN2010101100530 A CN 2010101100530A CN 201010110053 A CN201010110053 A CN 201010110053A CN 101775564 B CN101775564 B CN 101775564B
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- 229910000521 B alloy Inorganic materials 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 34
- -1 aluminum-titanium-boron Chemical compound 0.000 title claims abstract description 30
- 238000012545 processing Methods 0.000 title abstract description 21
- 238000007670 refining Methods 0.000 claims description 45
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 abstract description 12
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000003801 milling Methods 0.000 description 19
- 238000005266 casting Methods 0.000 description 16
- 238000009749 continuous casting Methods 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 10
- 239000004411 aluminium Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 229910000737 Duralumin Inorganic materials 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention provides a method for controlling variation of grain refinement ability of aluminum-titanium-boron alloy during pressure processing. The method comprises the following steps: firstly establishing functional relations between variation delta AA of grain refinement ability of aluminum-titanium-boron alloy and machining parameters D, V, delta T and n in pressure processing process of aluminum-titanium-boron alloy; and then adjusting machining parameters D, V, delta T and n through coordination to accurately control the variation delta AA of the grain refinement ability of aluminum-titanium-boron alloy. The method overcomes the defect that technological parameter cannot be qualitatively optimized in the pressure processing process of the traditional aluminum-titanium-boron alloy and proves that the control for the machining parameters can accurately control the variation of the grain refinement ability of aluminum-titanium-boron alloy; the greater the variation of the grain refinement ability is, the smaller the grain refinement ability value AA is after the pressure processing of the aluminum-titanium-boron alloy; when the grain refinement ability value AA is fixed before the pressure processing of the aluminum-titanium-boron alloy, the smaller the grain refinement ability value AA is after the pressure processing of the aluminum-titanium-boron alloy, and the stronger the aluminum-titanium-boron alloy refined aluminum and aluminum alloy grain ability is.
Description
[technical field]
The present invention relates to the complete processing of metallic substance, particularly control the method for the variable quantity of its grain refining capability during the press working Al-Ti-B alloy.
[background technology]
Al-Ti-B alloy is generally to use in the aluminum profile extrusion in the global range and the most effective master alloy of refinement aluminium and aluminum alloy solidification crystal grain.The grain refining capability of Al-Ti-B alloy is one of important factor of decision aluminium processing material quality quality; The grain refining capability of Al-Ti-B alloy is high more; Then the ys of aluminium processing material is high more, calendering plasticity is good more, ductile-brittle transition temperature is low more; Otherwise aluminium processing material quality is poor more, and this point is reflected more clearly when aluminium processing material is applied on the aerospace.For this reason; The manufacturing enterprise of each Al-Ti-B alloy and research institution are all in the research of strengthening grain refining capacity of aluminum-titanium-boron alloy energetically; Association of Alcoa is special stipulation grain refining capability value AA (hereinafter to be referred as the AA value) also; The AA value is the quantitative value of tolerance grain refining capacity of aluminum-titanium-boron alloy height; The ability of the more little expression Al-Ti-B alloy of AA value refinement aluminium and duraluminum crystal grain is strong more, and the crystal grain that promptly adds the aluminium processed behind the more little Al-Ti-B alloy of AA value and duraluminum is tiny more, the AA value by at first 250 reduce to 130 gradually.In the existing Al-Ti-B alloy processing technology, generally pay attention to the research of aspects such as material component, melting technology, and ignored the quality control of Al-Ti-B alloy in the rolling pressure course of processing; Press working comprises that mill milling and casting and extruding machine push two kinds; Think unilaterally that at present press working do not have influence to the grain refining capability of Al-Ti-B alloy; Do not know ratio that is the compression ratio of sectional area before and after the press working, the relation of the temperature difference, egress line speed, frame number and grain refining capacity of aluminum-titanium-boron alloy variable quantity before and after the press working yet; The temperature difference before and after just control pressure is processed by rule of thumb before and after the ratio of sectional area that is compression ratio, the press working etc., but the technological method of a cover quantitative optimization control set up.
[summary of the invention]
The present invention provides a kind of and adopts temperature head, egress line speed, frame before and after the ratio of coordinating sectional area before and after the adjustment Al-Ti-B alloy press working that is compression ratio, the press working to count the equipressure machined parameters; Thereby accurately control the method for the variable quantity of grain refining capacity of aluminum-titanium-boron alloy, solve exist at present can not be quantitatively and the technical problem of the variation of the problem of optimal control Al-Ti-B alloy press working parameter and the grain refining capacity of aluminum-titanium-boron alloy that brings thus.
The present invention solves the technical scheme that existing technical problem adopts: control the method for the variable quantity of its grain refining capability when a kind of press working Al-Ti-B alloy is provided, said method comprises:
A. at first set up the funtcional relationship of machined parameters in variation delta AA and the Al-Ti-B alloy press working process of grain refining capacity of aluminum-titanium-boron alloy, that is:
ΔAA＝K·D·V÷(ΔT·n)
Δ AA=AA wherein
1-AA
2, AA
1Be the grain refining capability value before the Al-Ti-B alloy press working, AA
2Be the grain refining capability value after the Al-Ti-B alloy press working, K is a constant, and D is the ratio that is the compression ratio of sectional area before and after the Al-Ti-B alloy press working,
S
1Be the sectional area before the Al-Ti-B alloy press working, S
2Be the sectional area after the Al-Ti-B alloy press working, Δ T is the temperature head before and after the Al-Ti-B alloy press working, and V is an egress line speed, and n is the frame number;
B. through coordinating adjustment machined parameters D, V, Δ T and n variation delta AA with accurate control grain refining capacity of aluminum-titanium-boron alloy.
An international standard is arranged in the manufacturing of Al-Ti-B alloy, and promptly the diameter of the Al-Ti-B alloy product of final output is 9.5mm, and promptly sectional area is 70.8mm
2Said funtcional relationship: Δ AA=KDV ÷ (Δ Tn) can be applied in and also can be applied in the casting and extruding machine of making Al-Ti-B alloy in the milling train of making Al-Ti-B alloy; Said funtcional relationship had both met the calculating of single-rack; Also meet total calculating of a plurality of frames, also meet the calculating of last frame in a plurality of frames simultaneously.
The present invention's improvement further is said 1m/s≤V≤30m/s.
Compared to prior art; The invention has the beneficial effects as follows: the present invention overcome in the conventional aluminum Ti-B alloy press working process can not the quantitative optimization technical parameter defective; Proof can accurately be controlled the variable quantity of grain refining capacity of aluminum-titanium-boron alloy to the control of machined parameters; The variable quantity of grain refining capability is big more; Grain refining capability value AA one timing before the Al-Ti-B alloy press working, then the grain refining capability value AA after the Al-Ti-B alloy press working is more little, and the ability of Al-Ti-B alloy refinement aluminium and duraluminum crystal grain is just strong more.
[description of drawings]
Fig. 1 controls the structural representation of continuous casting and rolling process for production of method of the variable quantity of its grain refining capability during for applying pressure of the present invention processing Al-Ti-B alloy;
The continuous casting of method that Fig. 2 controls the variable quantity of its grain refining capability during for applying pressure of the present invention processing Al-Ti-B alloy connects the structural representation that squeezes production technique;
Fig. 3 controls the single chassis structural representation of milling train of method of the variable quantity of its grain refining capability during for applying pressure of the present invention processing Al-Ti-B alloy;
Fig. 4 controls the structural representation of casting and extruding machine of method of the variable quantity of its grain refining capability during for applying pressure of the present invention processing Al-Ti-B alloy.
Relevant toponym is among Fig. 1 to Fig. 4: crucible 10, crystallizing wheel 20, milling train 30, roll 31, casting and extruding machine 40, quench liquid 50.
[embodiment]
This case applicant reaches a conclusion after groping through long-term experiment, and in Al-Ti-B alloy press working process, the press working parameter will directly have influence on the grain refining capability of Al-Ti-B alloy.For this reason; The applicant connects the equipment of squeezing through the self-produced continuous casting of import continuous casting and rolling equipment, applicant self-produced continuous casting and rolling equipment, applicant and experimentizes, and finds out the relation between the variation delta AA of press working parameter and grain refining capacity of aluminum-titanium-boron alloy; The part experimental data tabulation that below in experiment, obtains for the applicant:
Table 1
| 980 | 70.8 | 13.8 | 4 | 6 | 7 | 22.4 | 130 | 108 |
| 980 | 70.8 | 13.8 | 4 | 6 | 8 | 19.6 | 130 | 110 |
| 980 | 70.8 | 13.8 | 4 | 6 | 9 | 17.4 | 130 | 113 |
| 980 | 70.8 | 13.8 | 4 | 6 | 10 | 15.7 | 130 | 114 |
| 980 | 70.8 | 13.8 | 5 | 9 | 7 | 26.9 | 130 | 103 |
| 980 | 70.8 | 13.8 | 5 | 9 | 8 | 23.5 | 130 | 106 |
| 980 | 70.8 | 13.8 | 5 | 9 | 9 | 20.9 | 130 | 109 |
| 980 | 70.8 | 13.8 | 5 | 9 | 10 | 18.8 | 130 | 111 |
| 1200 | 70.8 | 16.9 | 3 | 3 | 7 | 18.3 | 130 | 112 |
| 1200 | 70.8 | 16.9 | 3 | 3 | 8 | 16.0 | 130 | 114 |
| 1200 | 70.8 | 16.9 | 3 | 3 | 9 | 14.2 | 130 | 116 |
| 1200 | 70.8 | 16.9 | 3 | 3 | 10 | 12.8 | 130 | 117 |
| 1200 | 70.8 | 16.9 | 4 | 6 | 7 | 27.4 | 130 | 103 |
| 1200 | 70.8 | 16.9 | 4 | 6 | 8 | 24.0 | 130 | 106 |
| 1200 | 70.8 | 16.9 | 4 | 6 | 9 | 21.3 | 130 | 109 |
| 1200 | 70.8 | 16.9 | 4 | 6 | 10 | 19.2 | 130 | 111 |
| 1200 | 70.8 | 16.9 | 5 | 9 | 7 | 32.9 | 130 | 97 |
| 1200 | 70.8 | 16.9 | 5 | 9 | 8 | 28.8 | 130 | 101 |
| 1200 | 70.8 | 16.9 | 5 | 9 | 9 | 25.6 | 130 | 104 |
| 1200 | 70.8 | 16.9 | 5 | 9 | 10 | 23.0 | 130 | 107 |
| 1400 | 70.8 | 19.8 | 4 | 6 | 10 | 22.4 | 130 | 108 |
| 1400 | 70.8 | 19.8 | 5 | 9 | 10 | 26.9 | 130 | 103 |
An international standard is arranged in the Al-Ti-B alloy manufacturing, and promptly the diameter of the Al-Ti-B alloy product of final output is 9.5mm, is that sectional area is 70.8mm
2The experimental data of table 1 for using continuous casting and rolling equipment to draw, continuous casting and rolling equipment comprise that refrigerating module, the refrigerating module of the Al-Ti-B alloy in milling train 30, the cooling pressure course of processing comprise the thermoscope that detects Al-Ti-B alloy press working front and back temperature.Two rolls 31 of Al-Ti-B alloy through milling train 30 cooperate milling trains to accomplish press working, Al-Ti-B alloy press working forward and backward with the press working process in all be solid-state.In press working, exist two temperature nodes, promptly before the pressurized and behind the decompress(ion); In the press working process of milling train 30; Instantaneous temperature and the input temp approximately equal of Al-Ti-B alloy before pressurized; Instantaneous temperature behind the decompress(ion) and output temperature approximately equal, therefore, it is comparatively convenient on milling train 30, to detect the forward and backward temperature of Al-Ti-B alloy press working at 2.
Fig. 1 is the structural representation of application through the continuous casting and rolling process for production of the method for the variable quantity of control compression ratio control grain refining capacity of aluminum-titanium-boron alloy; The Al-Ti-B alloy melt that comes out from crucible 10 forms the Al-Ti-B alloy rod through crystallizing wheel 20, and bar-shaped then Al-Ti-B alloy gets into milling train 30 press working.The frame of milling train 30 is counted n can be 3,4,5,6,7,8,9,10.As shown in Figure 1, it is 10 that the frame in the milling train 30 is counted n.As shown in Figure 3, the roll 31 in the milling train 30 can bear the sectional area S before the Al-Ti-B alloy press working
1, and can regulate roll 31 and make and satisfy the sectional area S after the Al-Ti-B alloy press working
2Thermoscope has two at least; Detect the forward and backward temperature of Al-Ti-B alloy rolling pressure processing respectively; Temperature before the Al-Ti-B alloy press working is 300-450 ℃; Al-Ti-B alloy can raise through milling train 30 back temperature, refrigerating module spray quench liquid the roll 31 of milling train 30 with rolling in Al-Ti-B alloy on; Flow through controlled chilling liquid 50 makes the temperature head Δ T before and after the Al-Ti-B alloy press working be controlled at a reasonable range, and quench liquid 50 can be a water; Last Al-Ti-B alloy forms Al-Ti-B alloy rod after coming out from milling train 30.
Use the experimental data that continuous casting and rolling equipment draws from table 1, the applicant through the funtcional relationship between the variation delta AA of the press working parameter that obtains after studying repeatedly and summing up and grain refining capacity of aluminum-titanium-boron alloy is: Δ AA=KDV ÷ (Δ Tn)
Δ AA=AA wherein
1-AA
2, AA
1Be the grain refining capability value before the Al-Ti-B alloy press working, AA
2Be the grain refining capability value after the Al-Ti-B alloy press working, K is a constant, and drawing K through table 1 numerical evaluation is 7.55, and D is the ratio that is the compression ratio of sectional area before and after the Al-Ti-B alloy press working,
S
1Be the sectional area before the Al-Ti-B alloy press working, S
2Be the sectional area after the Al-Ti-B alloy press working; Δ T is the temperature head before and after the Al-Ti-B alloy press working, and V is an egress line speed, and Δ T and V have funtcional relationship: V=3 Δ T-6; The peak that V>=1m/s and egress line speed V can reach at present is 30m/s, and n is the frame number.
Said funtcional relationship: Δ AA=KDV ÷ (Δ Tn) meets total calculating of a plurality of frames of milling train, also meets the calculating of the single-rack of milling train, as meets the calculating of last frame of milling train; When n=1, must refer to the calculating of last frame, the sectional area of the Al-Ti-B alloy product of exporting in last frame is 70.8mm
2
Table 2
An international standard is arranged in the manufacturing of Al-Ti-B alloy, and promptly the diameter of the Al-Ti-B alloy product of final output is 9.5mm, and promptly sectional area is 70.8mm
2Table 2 connects the experimental data that the equipment of squeezing draws for the self-produced continuous casting of request for utilization people.Continuous casting connects the equipment of squeezing and comprises that refrigerating module, the refrigerating module of the Al-Ti-B alloy in casting and extruding machine 40, the cooling pressure course of processing comprise the thermoscope that detects Al-Ti-B alloy press working front and back temperature.Al-Ti-B alloy is through the inner completion of the roller press working at casting and extruding machine 40, and Al-Ti-B alloy is forward and backward in press working to be solid-state, in the press working process, is semi-solid state.In press working, exist two temperature nodes, promptly before the pressurized and behind the decompress(ion); In the press working of casting and extruding machine 40; The instantaneous temperature of Al-Ti-B alloy before pressurized is the temperature of the focus that rubbed; Instantaneous temperature behind the decompress(ion) is the temperature when casting and extruding machine 40 is extruded; Therefore, note on casting and extruding machine 40, detecting the accuracy of the forward and backward temperature of Al-Ti-B alloy press working at 2.
Fig. 2 is application connects crowded production technique through the continuous casting of the method for the variable quantity of control compression ratio control grain refining capacity of aluminum-titanium-boron alloy a structural representation; The Al-Ti-B alloy melt that comes out from crucible 10 forms the Al-Ti-B alloy rod through crystallizing wheel 20; Bar-shaped then Al-Ti-B alloy is through the press working of casting and extruding machine 40; The frame of casting and extruding machine 40 is counted n and is illustrated in figure 2 as 1, and is as shown in Figure 4, and casting and extruding machine 40 can bear the sectional area S before the Al-Ti-B alloy press working
1, and can regulate and make and to satisfy the sectional area S after the Al-Ti-B alloy press working
2Thermoscope has two at least, detects the forward and backward temperature of Al-Ti-B alloy press working respectively; Al-Ti-B alloy can raise and makes Al-Ti-B alloy be the semi-fluid attitude through add the man-hour temperature 40 li of casting and extruding machines; It is inner to the roller of casting and extruding machine 40 that refrigerating module sprays quench liquid; Flow through controlled chilling liquid makes the temperature head Δ T before and after the Al-Ti-B alloy press working be controlled at a reasonable range, and quench liquid can be a water; Last Al-Ti-B alloy is extruded the formation Al-Ti-B alloy rod from casting and extruding machine 40.
Use continuous casting to connect the experimental data that the equipment of squeezing draws from table 2, the applicant through the funtcional relationship between the variation delta AA of the press working parameter that obtains after studying repeatedly and summing up and grain refining capacity of aluminum-titanium-boron alloy is: Δ AA=KDV ÷ (Δ Tn)
Δ AA=AA wherein
1-AA
2, AA
1Be the grain refining capability value before the Al-Ti-B alloy press working, AA
2Be the grain refining capability value after the Al-Ti-B alloy press working, K is a constant, and drawing K through table 1 numerical evaluation is 7.55; D is the ratio that is the compression ratio of sectional area before and after the Al-Ti-B alloy press working,
S
1Be the sectional area before the Al-Ti-B alloy press working, S
2Be the sectional area after the Al-Ti-B alloy press working, Δ T is the temperature head before and after the Al-Ti-B alloy press working, and V is an egress line speed, and n is the frame number, n=1.
Said funtcional relationship: Δ AA=KDV ÷ (Δ Tn) meets the calculating of the single-rack of casting and extruding machine, when n=1, must refer to the calculating of last frame, and the sectional area of output Al-Ti-B alloy product is 70.8mm in last frame
2
Thus; The applicant has found the method for accurately controlling the variable quantity of grain refining capacity of aluminum-titanium-boron alloy in this press working; This method comprises: at first set up the funtcional relationship of machined parameters D, V, Δ T and n in variation delta AA and the Al-Ti-B alloy press working process of grain refining capacity of aluminum-titanium-boron alloy, then through coordinating adjustment machined parameters D, V, Δ T and the n variation delta AA with accurate control grain refining capacity of aluminum-titanium-boron alloy.
The present invention overcome in the conventional aluminum Ti-B alloy press working process can not the quantitative optimization technical parameter defective; Proof can accurately be controlled the variable quantity of grain refining capacity of aluminum-titanium-boron alloy to the control of machined parameters; The variable quantity of grain refining capability is big more; Grain refining capability value AA one timing before the Al-Ti-B alloy press working, then the grain refining capability value AA after the Al-Ti-B alloy press working is more little, and the ability of Al-Ti-B alloy refinement aluminium and duraluminum crystal grain is just strong more.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (2)
1. control the method for the variable quantity of its grain refining capability during a press working Al-Ti-B alloy, it is characterized in that: said method comprises:
A. at first set up the funtcional relationship of machined parameters in variation delta AA and the Al-Ti-B alloy press working process of grain refining capacity of aluminum-titanium-boron alloy, that is:
ΔAA＝K·D·V÷(ΔT·n)
Wherein K is a constant,
S
1Be the sectional area before the Al-Ti-B alloy press working, S
2Be the sectional area after the Al-Ti-B alloy press working, Δ T is the temperature head before and after the Al-Ti-B alloy press working, and V is an egress line speed, and n is the frame number;
B. through coordinating adjustment machined parameters D, V, Δ T and n variation delta AA with accurate control grain refining capacity of aluminum-titanium-boron alloy.
2. control the method for the variable quantity of its grain refining capability during press working Al-Ti-B alloy according to claim 1, it is characterized in that: said 1m/s≤V≤30m/s.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4612073A (en) * | 1984-08-02 | 1986-09-16 | Cabot Corporation | Aluminum grain refiner containing duplex crystals |
| CN1544678A (en) * | 2003-11-20 | 2004-11-10 | 上海交通大学 | In-situ synthesized TiC-AI composite ultra-fine grain refining agent and process for preparing same |
| CN1847423A (en) * | 2005-10-21 | 2006-10-18 | 兰州理工大学 | Prepn process of composite Al-Ti-C grain refining agent for aluminium and aluminium alloy |
-
2010
- 2010-02-05 CN CN2010101100530A patent/CN101775564B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4612073A (en) * | 1984-08-02 | 1986-09-16 | Cabot Corporation | Aluminum grain refiner containing duplex crystals |
| CN1544678A (en) * | 2003-11-20 | 2004-11-10 | 上海交通大学 | In-situ synthesized TiC-AI composite ultra-fine grain refining agent and process for preparing same |
| CN1847423A (en) * | 2005-10-21 | 2006-10-18 | 兰州理工大学 | Prepn process of composite Al-Ti-C grain refining agent for aluminium and aluminium alloy |
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Inventor after: Chen Xuemin Inventor after: Li Jianguo Inventor after: Liu Chaowen Inventor after: Ye Qingdong Inventor after: Yu Yueming Inventor before: Zhang Xinming Inventor before: Chen Xuemin Inventor before: Li Jianguo Inventor before: Liu Chaowen Inventor before: Li Saiyi |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG XINMING CHEN XUEMIN LI JIANGUO LIU CHAOWEN LI SAIYI TO: CHEN XUEMIN LI JIANGUO LIU CHAOWEN YE QINGDONG YU YUEMING |
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Address after: 518107, A building, Xinxing factory, hi tech Industrial Park, Gongming Town, sightseeing Road, Shenzhen, Baoan District Applicant after: Shenzhen Sunxing Light Alloy Materials Co., Ltd. Address before: 518107 Guangming New District hi tech Industrial Park, Xinxing District, Guangdong, Shenzhen Applicant before: Xinxing Chemical Metallurgical material (Shenzhen) Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: XINXING CHEMICAL METALLURGICAL MATERIALS (SHENZHEN) CO., LTD. TO: SHENZHEN SUNXING LIGHT ALLOY MATERIALS CO., LTD. |
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Effective date of registration: 20190815 Address after: 471900 Shangcheng Street Office, Yanshi City, Luoyang City, Henan Province (southeast corner of the intersection of Dufu Avenue and Merchants Avenue) Patentee after: Xinxing Light Alloy Material (Luoyang) Co., Ltd. Address before: 518107, A building, Xinxing factory, hi tech Industrial Park, Gongming Town, sightseeing Road, Shenzhen, Baoan District Patentee before: Shenzhen Sunxing Light Alloy Materials Co., Ltd. |
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