CN1410572A - High silicon cast aluminium spectrum standard sample and its preparation method - Google Patents
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Abstract
The standard specimen contains chemical elements with following weight ratios in pure aluminium Si: 1.03-13.70, Fe: 0.147-1.50, Cu: 0.125-7.44, Mn: 0.090-1.05, Mg: 0.049-1.53, Zn: 0.052-1.05, Ti: 0.034-0.274 etc. Since the Al-Sr modification is adopted, thus the specimen provides the features of even chemical elements, compact structure, free of bulky initializing coarse grains as well as raised processability. The long-playing diffusion fusion technique adopted makes silicon diffuse to aluminium adequetely so as to increase uniformity of chemical elements in the specimen evidently.
Description
(1), affiliated technical field
The present invention relates to a kind of standard model of differentiating aluminium, particularly a kind of high silicon cast aluminium alloy spectral standard sample.
(2), technical background
Because high silicon cast aluminium alloy thermal expansivity is little, wear resistance and hot strength are good, have obtained in recent years to use widely, for example, at high temperature require wear resistance is good and intensity is high piston, engine cylinder-body etc.Along with high silicon cast aluminium alloy market is constantly vast, the requirement of tackling its quality product mutually is also more and more tighter.Existing high silicon cast aluminium alloy is to be prepared from through common operations such as melting, adjustment chemical ingredients, casting, homogenizing processing, extruding and sawings successively, and it mainly contains chemical elements such as Si, Fe, Cu, Mn, Mg, Zn, Ti, Ni, Pb and Sn.It is inhomogeneous that this high silicon cast aluminium alloy standard model exists elements such as chemical ingredients lack of homogeneity, particularly Si, Cu, Mg, and crystal grain is big, and primary silicon and Eutectic Silicon in Al-Si Cast Alloys are arranged, and extremely is difficult for extrusion processing; High silicon cast aluminium alloy standard model with domestic standard specimen 11.70%Si, 0.644%Cu, 0.883%Mg is an example, its relative standard deviation RSD is respectively 0.23,0.030,0.042, high silicon cast aluminium alloy standard model with import standard specimen 9.54%Si, 2.99%Cu, 0.990%Mg is an example, and its relative standard deviation RSD is respectively 0.17,0.074,0.023; This class standard sample causes reviewer's error in judgement easily, is difficult to satisfy the requirement of Composition Control.
(3), summary of the invention
Purpose of the present invention just provides a kind of high silicon cast aluminium spectrum standard sample of good uniformity.
Another object of the present invention provides the preparation method of this high silicon cast aluminium spectrum standard sample.
High silicon cast aluminium spectrum standard sample described in the purpose of the present invention is the chemical element that evenly contains following total weight percent in fine aluminium:
Si：1.03～13.70， Fe：0.147～1.50， Cu：0.125～7.44，
Mn：0.090～1.05， Mg：0.049～1.53， Zn：0.052～1.05，
Ti：0.034～0.274， Ni：0.0099～0.197，Pb：0.012～0.202，
Sn：0.0014～0.149，?Sr：0.0054～0.188。
The preparation method of above-mentioned high silicon cast aluminium spectrum standard sample is undertaken by following step:
1) melting:
(1) furnace temperature is risen to carry out baker about 400 ℃, add rafifinal, also add master alloys such as Al-Fe, Al-Cu, Al-Mn, and be sprinkled into common flux, fusing heats up;
(2) diffusion melting: add silicon metal by 105%～110% of calculated amount, fully stir, allow aluminium water that silicon metal is wrapped up, be incubated more than six hours then, utilize silicon to have the big characteristics of spread coefficient, spread for a long time, make silicon be dissolved in the aluminium equably;
(3) add chemical elements such as Al-Ti, Al-Ni, pure Mg, pure Zn, pure Pb and pure Sn, wait to melt back rake slag, stir more than twice, be ten minutes the pitch time of at every turn harrowing slag, stirring;
(4) sampling analysis is adjusted its chemical ingredients till adhere to specification according to analytical results;
(5) the rotten processing: be under 720 ℃～750 ℃ the condition, to add Al-10%Sr in temperature, adjust its chemical ingredients till adhere to specification;
(6) examination of fracture: sampling, interrupt a mouthful sample, observe the fracture of sample, require fracture to be canescence, no coarse-grain and dense structure;
2) casting: cast with semicontinuous caster, the graphite funnel carries out separatory, filter with glass wool cloth, water coolant hydraulic pressure is controlled at 0.09Mpa～0.095Mpa, adjust temperature to 840 ℃～850 ℃, casting speed is controlled at 65mm/ branch～70mm/ branch, and casting diameter at last is the 162mm cylinder ingots, promptly is the standard specimen ingot casting;
3) standard specimen homogenizing cast ingot: the control furnace temperature is positioned over the standard specimen ingot casting that casts out in the furnace temperature at 510 ℃～520 ℃, is cooled to room temperature with furnace temperature in insulation under 490 ℃～500 ℃ the temperature after 12 hours;
4) processing such as extruding, sawing: the standard specimen ingot casting after homogenizing is handled is squeezed into the bar that diameter is 60mm through 2000 tons of oil pressure extrusion machines again, and sawing becomes the small cylindrical of Ф 60mm * 30mm again, promptly is last standard specimen sample.
Al-Sr is rotten to be handled owing to adopted, and the chemical ingredients of high silicon cast aluminium standard model of the present invention is even, dense structure, no thick first coarse grain, and improved processing characteristics; Owing to adopted long-time diffusion smelting technique, make silicon fully be diffused in the aluminium again, significantly improve standard specimen chemical ingredients homogeneity.High silicon cast aluminium alloy standard model with 10.98%Si of the present invention, 0.624%Cu, 1.35%Mg is an example, and its relative standard deviation RSD is respectively 0.065,0.0035,0.013, and this good uniformity that it is described is in similar domestic and import standard model.
(4), embodiment
The invention will be further described below in conjunction with embodiment:
High silicon cast aluminium spectrum standard sample among the present invention is the chemical element that evenly contains following gross weight per-cent in fine aluminium:
Si：1.03～13.70， Fe：0.147～1.50， Cu：0.125～7.44，
Mn：0.090～1.05， Mg：0.049～1.53， Zn：0.052～1.05，
Ti：0.034～0.274， Ni：0.0099～0.197，Pb：0.012～0.202，
Sn：0.0014～0.149，?Sr：0.0054～0.188。
With standard specimen number is that E511a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：10.91， Fe：1.12，?Cu：0.468， Mn：0.292，
Mg：0.381， Zn：0.487，Ti：0.060， Ni：0.145，
Pb：0.152， Sn：0.098，Sr：0.018。
With standard specimen number is that E512a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：5.93， Fe：0.825，Cu：1.54， Mn：0.485，
Mg：0.672， Zn：0.782，Ti：0.094， Ni：0.119，
Pb：0.156， Sn：0.064，Sr：0.0054。
With standard specimen number is that E513a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：13.70， Fe：0.147，Cu：2.31， Mn：0.619，
Mg：0.932， Zn：0.190，Ti：0.109， Ni：0.077，
Pb：0.065， Sn：0.026，Sr：0.188。
With standard specimen number is that E514a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：3.00， Fe：0.395，?Cu：3.61， Mn：1.05，
Mg：1.23， Zn：1.05， Ti：0.180， Ni：0.049，
Pb：0.042，?Sn：0.0096，Sr：0.046。
With standard specimen number is that E515a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：8.33， Fe：0.640， Cu：0.125， Mn：0.837，
Mg：0.049， Zn：0.052， Ti：0.034， Ni：0.197，
Pb：0.012， Sn：0.149， Sr：0.011。
With standard specimen number is that E516a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：1.03， Fe：1.50， Cu：4.98， Mn：0.090，
Mg：1.53，?Zn：1.37， Ti：0.206， Ni：0.020，
Pb：0.202，Sn：0.0014，Sr：0.0054。
With standard specimen number is that E517a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：4.76， Fe：0.173， Cu：7.44， Mn：0.173，
Mg：0.316， Zn：0.301， Ti：0.060， Ni：0.012，
Pb：0.024， Sn：0.0026，?Sr：0.048。
With standard specimen number is that E518a is an example, and wherein the per-cent of the gross weight of each chemical element is:
Si：9.02，?Fe：0.279，?Cu：1.51， Mn：0.246，
Mg：0.516，Zn：0.133，?Ti：0.274，?Ni：0.0099，
Pb：0.026，Sn：0.0037，Sr：0.053。
The preparation method of the above-mentioned high silicon cast aluminium spectrum standard sample of invention is characterized in that it is to be undertaken by following step:
1) melting:
(1) furnace temperature is risen to carry out baker about 400 ℃, add rafifinal, also add master alloys such as Al-Fe, Al-Cu, Al-Mn, and be sprinkled into common flux, fusing heats up;
(2) diffusion melting: add silicon metal by 105%～110% of calculated amount, fully stir, allow aluminium water that silicon metal is wrapped up, be incubated more than six hours then, utilize silicon to have the big characteristics of spread coefficient, spread for a long time, make silicon be dissolved in the aluminium equably;
(3) add chemical elements such as Al-Ti, Al-Ni, pure Mg, pure Zn, pure Pb and pure Sn, wait to melt back rake slag, stir more than twice, be ten minutes the pitch time of at every turn harrowing slag, stirring;
(4) sampling analysis is adjusted its chemical ingredients till adhere to specification according to analytical results;
(5) the rotten processing: be under 720 ℃～750 ℃ the condition, to add Al-10%Sr in temperature, adjust its chemical ingredients till adhere to specification;
(6) examination of fracture: sampling, interrupt a mouthful sample, observe the fracture of sample, require fracture to be canescence, no coarse-grain and dense structure;
2) casting: cast with semicontinuous caster, the graphite funnel carries out separatory, filter with glass wool cloth, water coolant hydraulic pressure is controlled at 0.09Mpa～0.095Mpa, adjust temperature to 840 ℃～850 ℃, casting speed is controlled at 65mm/ branch～70mm/ branch, and casting diameter at last is the 162mm cylinder ingots, promptly is the standard specimen ingot casting;
3) standard specimen homogenizing cast ingot: the control furnace temperature is positioned over the standard specimen ingot casting that casts out in the furnace temperature at 510 ℃～520 ℃, is cooled to room temperature with furnace temperature in insulation under 490 ℃～500 ℃ the temperature after 12 hours;
4) processing such as extruding, sawing: the standard specimen ingot casting after homogenizing is handled is squeezed into the bar that diameter is 60mm through 2000 tons of oil pressure extrusion machines again, and sawing becomes the small cylindrical of Ф 60mm * 30mm again, promptly is last standard specimen sample.
Claims (10)
1. high silicon cast aluminium spectrum standard sample is characterized in that it is the chemical element that evenly contains following total weight percent in fine aluminium:
Si：1.03～13.70， Fe：0.147～1.50， Cu：0.125～7.44，
Mn：0.090～1.05， Mg：0.049～1.53， Zn：0.052～1.05，
Ti：0.034～0.274， Ni：0.0099～0.197，Pb：0.012～0.202，
Sn：0.0014～0.149，?Sr：0.0054～0.188。
2. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：10.91， Fe：1.12，?Cu：0.468， Mn：0.292，
Mg：0.381， Zn：0.487，Ti：0.060， Ni：0.145，
Pb：0.152， Sn：0.098，Sr：0.018。
3. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：5.93， Fe：0.825，Cu：1.54， Mn：0.485，
Mg：0.672， Zn：0.782，Ti：0.094， Ni：0.119，
Pb：0.156， Sn：0.064，Sr：0.0054。
4. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：13.70， Fe：0.147，Cu：2.31， Mn：0.619，
Mg：0.932， Zn：0.190，Ti：0.109， Ni：0.077，
Pb：0.065， Sn：0.026，Sr：0.188。
5. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：3.00，?Fe：0.395，?Cu：3.61， Mn：1.05，
Mg：1.23，?Zn：1.05， Ti：0.180， Ni：0.049，
Pb：0.042，Sn：0.0096，Sr：0.046。
6. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：8.33， Fe：0.640， Cu：0.125， Mn：0.837，
Mg：0.049， Zn：0.052， Ti：0.034， Ni：0.197，
Pb：0.012， Sn：0.149， Sr：0.011。
7. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：1.03， Fe：1.50， Cu：4.98， Mn：0.090，
Mg：1.53， Zn：1.37， Ti：0.206， Ni：0.020，
Pb：0.202，?Sn：0.0014，Sr：0.0054。
8. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：4.76， Fe：0.173，?Cu：7.44， Mn：0.173，
Mg：0.316， Zn：0.301，?Ti：0.060， Ni：0.012，
Pb：0.024， Sn：0.0026，Sr：0.048。
9. high silicon cast aluminium spectrum standard sample as claimed in claim 1, wherein the per-cent of the gross weight of each chemical element is:
Si：9.02，?Fe：0.279，?Cu：1.51， Mn：0.246，
Mg：0.516，Zn：0.133，?Ti：0.274，?Ni：0.0099，
Pb：0.026，Sn：0.0037，Sr：0.053。
10. as the preparation method of claim 1,2,3,4,5,6,7,8 or 9 described high silicon cast aluminium spectrum standard samples, it is characterized in that it is to be undertaken by following step:
1) melting:
(1) furnace temperature is risen to carry out baker about 400 ℃, add rafifinal, also add master alloys such as Al-Fe, Al-Cu, Al-Mn, and be sprinkled into common flux, fusing heats up;
(2) diffusion melting: add silicon metal by 105%～110% of calculated amount, fully stir, allow aluminium water that silicon metal is wrapped up, be incubated then more than six hours, spread for a long time, make silicon be dissolved in the aluminium equably;
(3) add chemical elements such as Al-Ti, Al-Ni, pure Mg, pure Zn, pure Pb and pure Sn, wait to melt back rake slag, stir more than twice, be ten minutes the pitch time of at every turn harrowing slag, stirring;
(4) sampling analysis is adjusted its chemical ingredients till adhere to specification according to analytical results;
(5) the rotten processing: be under 720 ℃～750 ℃ the condition, to add Al-10%Sr in temperature, adjust its chemical ingredients till adhere to specification;
(6) examination of fracture: sampling, interrupt a mouthful sample, observe the fracture of sample, require fracture to be canescence, no coarse-grain and dense structure;
2) casting: cast with semicontinuous caster, the graphite funnel carries out separatory, filter with glass wool cloth, water coolant hydraulic pressure is controlled at 0.09Mpa～0.095Mpa, adjust temperature to 840 ℃～850 ℃, casting speed is controlled at 65mm/ branch～70mm/ branch, and casting diameter at last is the 162mm cylinder ingots, promptly is the standard specimen ingot casting;
3) standard specimen homogenizing cast ingot: the control furnace temperature is positioned over the standard specimen ingot casting that casts out in the furnace temperature at 510 ℃～520 ℃, is cooled to room temperature with furnace temperature in insulation under 490 ℃～500 ℃ the temperature after 12 hours;
4) processing such as extruding, sawing: the standard specimen ingot casting after homogenizing is handled is squeezed into the bar that diameter is 60mm through 2000 tons of oil pressure extrusion machines again, and sawing becomes the small cylindrical of Ф 60mm * 30mm again, promptly is last standard specimen sample.
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| CN113820191B (en) * | 2021-10-19 | 2024-01-19 | 西安西部新锆科技股份有限公司 | High-uniformity zirconium alloy standard substance and preparation method thereof |
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