CN105506236A - Control method for black and white spots on surfaces of alloy profiles - Google Patents
Control method for black and white spots on surfaces of alloy profiles Download PDFInfo
- Publication number
- CN105506236A CN105506236A CN201510957936.8A CN201510957936A CN105506236A CN 105506236 A CN105506236 A CN 105506236A CN 201510957936 A CN201510957936 A CN 201510957936A CN 105506236 A CN105506236 A CN 105506236A
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- CN
- China
- Prior art keywords
- black
- white spots
- quenching
- quenching temperature
- control method
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Abstract
The invention discloses a control method for black and white spots on the surfaces of alloy profiles. According to the control method, quenching temperature is lowered in quenching, which is 425-445 DEG C. In actual production, proved by small-batch charge production, the phenomenon of black and white spots on the surfaces of 1420CZ aluminum-lithium alloy profiles is mainly produced in the process of quenching heating and thermal insulation, and the result of multiple times of sampling for coherent detection and contrastive analysis shows that the black and white spots are all located on the surface layer of a lithium-removing layer of the aluminum-lithium alloy, the black spot area has no texture difference and does not extend deep into a metallic matrix, the intensity of forming of the black and white spots is mainly related to quenching temperature, and by adjusting the quenching temperature, the black and white spots on the surfaces of the profiles can be effectively controlled basically, and the black and white spots are obviously reduced, namely, in quenching, the quenching temperature is lowered on the basis of the prior art, which is 425-445 DEG C, thus effectively reducing black and white spots.
Description
Technical field
The present invention relates to Al-Li alloy section bar production method technical field, particularly a kind of alloy profile surface melanoleukoderma point control method.
Background technology
Please refer to Fig. 1, Fig. 1 is the structure schematic diagram of black and white spot in prior art.1420CZ Al-Li alloy is as high strength in one, and the functional materials of lightweight, its added value is quite high.There is black and white spot phenomenon in this Al-Li alloy Surface of profile in actual production process always, and some is point-like, and some is random bulk.User in use needs to carry out anodic oxidation to goods, and to strengthen solidity to corrosion and other performance of this alloy, and the black and white spot of this section bar has influence on carrying out of subsequent process.
Therefore, how providing a kind of alloy profile surface melanoleukoderma point control method, to reduce black and white spot, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of alloy profile surface melanoleukoderma point control method, to reduce black and white spot.
For solving the problems of the technologies described above, the invention provides following scheme:
A kind of alloy profile surface melanoleukoderma point control method, reduce quenching temperature when quenching, its quenching temperature is 425 DEG C-445 DEG C.
Preferably, above-mentioned quenching temperature is 430 DEG C ± 5 DEG C.
Preferably, above-mentioned quenching temperature is 430 DEG C.
Preferably, above-mentioned quenching temperature is 445 DEG C.
Preferably, alloy profile is 1420CZ Al-Li alloy.
The alloy profile surface melanoleukoderma point control method that the invention described above provides, reduce quenching temperature when quenching, its quenching temperature is 425 DEG C-445 DEG C.In actual production, feed intake to produce through short run and find that 1420CZ Al-Li alloy Surface of profile black and white spot phenomenon mainly produces in Quench heating insulating process, correlation detection and comparative analysis is carried out through repeatedly sampling, result all shows that black and white spot is in Al-Li alloy and takes off lithium layer top layer, blackspot region has no histological difference, metallic matrix is not goed deep into yet, power spectrum micro-zone analysis blackspot position is containing O, C, the elements such as Mg, it is the surface chromatic aberration phenomenon formed due to the de-lithium in section bar surface in air furnace quench hot process and magnesium elements oxidation that analysis conclusion is regarded as, high magnesium, a kind of characteristic that 1420 alloys of high lithium content are exclusive.The intensity of black and white spot formation is mainly relevant with quenching temperature, by the adjustment to quenching system, Surface of profile black and white spot obtains effective control substantially, black and white spot also can obviously alleviate, namely quenching temperature is reduced on the basis of existing technology when quenching, when its quenching temperature is 425 DEG C-445 DEG C, can effectively reduce black and white spot.
Accompanying drawing explanation
Fig. 1 is the structure schematic diagram of black and white spot in prior art;
Fig. 2 is the structure schematic diagram of normal black and white spot after employing alloy profile surface melanoleukoderma point control method.
Embodiment
In order to make those skilled in the art understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2, Fig. 2 is the structure schematic diagram of normal black and white spot after employing alloy profile surface melanoleukoderma point control method.
The alloy profile surface melanoleukoderma point control method that the embodiment of the present invention provides, reduce quenching temperature when quenching, its quenching temperature is 425 DEG C-445 DEG C.In actual production, feed intake to produce through short run and find that 1420CZ Al-Li alloy Surface of profile black and white spot phenomenon mainly produces in Quench heating insulating process, correlation detection and comparative analysis is carried out through repeatedly sampling, result all shows that black and white spot is in Al-Li alloy and takes off lithium layer top layer, blackspot region has no histological difference, metallic matrix is not goed deep into yet, power spectrum micro-zone analysis blackspot position is containing O, C, the elements such as Mg, it is the surface chromatic aberration phenomenon formed due to the de-lithium in section bar surface in air furnace quench hot process and magnesium elements oxidation that analysis conclusion is regarded as, high magnesium, a kind of characteristic that 1420 alloys of high lithium content are exclusive.The intensity of black and white spot formation is mainly relevant with quenching temperature, by the adjustment to quenching system, Surface of profile black and white spot obtains effective control substantially, black and white spot also can obviously alleviate, namely quenching temperature is reduced on the basis of existing technology when quenching, when its quenching temperature is 425 DEG C-445 DEG C, can effectively reduce black and white spot.
In order to optimize such scheme further, quenching temperature is 430 DEG C ± 5 DEG C, melanoleukoderma point control better effects if.When quenching temperature is 430 DEG C, melanoleukoderma point control effect is best, when quenching temperature is 445 DEG C, can play certain blackspot spot control effects.Wherein, alloy profile can be 1420CZ Al-Li alloy.
Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (5)
1. an alloy profile surface melanoleukoderma point control method, it is characterized in that, reduce quenching temperature when quenching, its quenching temperature is 425 DEG C-445 DEG C.
2. melanoleukoderma point control method in alloy profile surface according to claim 1, it is characterized in that, described quenching temperature is 430 DEG C ± 5 DEG C.
3. melanoleukoderma point control method in alloy profile surface according to claim 1, it is characterized in that, described quenching temperature is 430 DEG C.
4. melanoleukoderma point control method in alloy profile surface according to claim 1, it is characterized in that, described quenching temperature is 445 DEG C.
5. melanoleukoderma point control method in alloy profile surface according to claim 1, it is characterized in that, alloy profile is 1420CZ Al-Li alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957936.8A CN105506236A (en) | 2015-12-18 | 2015-12-18 | Control method for black and white spots on surfaces of alloy profiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957936.8A CN105506236A (en) | 2015-12-18 | 2015-12-18 | Control method for black and white spots on surfaces of alloy profiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105506236A true CN105506236A (en) | 2016-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510957936.8A Pending CN105506236A (en) | 2015-12-18 | 2015-12-18 | Control method for black and white spots on surfaces of alloy profiles |
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| CN (1) | CN105506236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165904A (en) * | 2017-12-28 | 2018-06-15 | 西南铝业（集团）有限责任公司 | A kind of process for quenching of 1420CZ aluminium lithium alloys type |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4786337A (en) * | 1988-03-25 | 1988-11-22 | Rockwell International Corporation | Method of treating aluminum-lithium alloys |
| RU2126456C1 (en) * | 1997-09-22 | 1999-02-20 | Всероссийский научно-исследовательский институт авиационных материалов | Aluminum-base alloy and method of its heat treatment |
| CN1482267A (en) * | 2003-08-18 | 2004-03-17 | 北京工业大学 | Al-Mg-Li-Zr-Er alloy |
| CN1540299A (en) * | 2003-04-22 | 2004-10-27 | ������������ʽ���� | Measurig method and measuring device |
-
2015
- 2015-12-18 CN CN201510957936.8A patent/CN105506236A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4786337A (en) * | 1988-03-25 | 1988-11-22 | Rockwell International Corporation | Method of treating aluminum-lithium alloys |
| RU2126456C1 (en) * | 1997-09-22 | 1999-02-20 | Всероссийский научно-исследовательский институт авиационных материалов | Aluminum-base alloy and method of its heat treatment |
| CN1540299A (en) * | 2003-04-22 | 2004-10-27 | ������������ʽ���� | Measurig method and measuring device |
| CN1482267A (en) * | 2003-08-18 | 2004-03-17 | 北京工业大学 | Al-Mg-Li-Zr-Er alloy |
Non-Patent Citations (1)
| Title |
|---|
| 刘北兴等: "固溶处理冷却速度对比1420合金性能的影响", 《材料科学与工艺》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165904A (en) * | 2017-12-28 | 2018-06-15 | 西南铝业（集团）有限责任公司 | A kind of process for quenching of 1420CZ aluminium lithium alloys type |
| CN108165904B (en) * | 2017-12-28 | 2020-09-01 | 西南铝业（集团）有限责任公司 | Quenching method of 1420CZ aluminum lithium alloy section |
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Application publication date: 20160420 |