CN101637819A - Heat-speed treatment low-temperature pouring method for aluminum silicon alloy - Google Patents
Heat-speed treatment low-temperature pouring method for aluminum silicon alloy Download PDFInfo
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Abstract
The invention discloses a heat-speed treatment low-temperature pouring method for aluminum silicon alloy, which relates to a pouring method for aluminum silicon alloy. The invention solves the problems of thick aluminum silicon alloy structure, low mechanical performance, increased cost, wasted energy source and complicated operation of the aluminum silicon alloy poured by the prior art. The method comprises the following steps: 1, preparing an aluminum silicon alloy quenching material; 2, after the raw material is weighed, placing the raw material into a resistance furnace crucible to be heated till the raw material is completely melted; adding the aluminum silicon alloy quenching material; stirring, quenching and removing slag and then pouring the mixture into a preheated metal mold; andobtaining the aluminum silicon alloy. The invention reduces the cost, saves energy sources, is simple to operate, has thin aluminum silicon alloy structure and converts dendrite into thin isometric crystal; the as-cast mechanical performance of the aluminum silicon alloy is favorable, and the tensile strength and the elongation respectively reach 210-213MPa and 4.3 percent to 4.7 percent; the heat treatment state mechanical performance of the aluminum silicon alloy is favorable, and the tensile strength and the elongation respectively reach 355-359MPa and 13.5 percent to 15.2 percent.
Description
Technical field
The present invention relates to a kind of pouring procedure of alusil alloy.
Background technology
In aluminium alloy, Alar has good casting character, as good fluidity, air-tightness is good, shrinkage factor is little and hot cracking tendency is little etc., and has higher comprehensive mechanical property.Alusil alloy is through after melt treatment, alloying and the heat treatment, and mechanical property can be improved significantly.
Alusil alloy generally all need carry out melt treatment and alloying at higher temperature, normal cast is because pouring temperature higher (720 ℃), cause alloy structure thick, mechanical property is not high, and (the as cast condition mechanical property: tensile strength and percentage elongation are respectively 188～192MPa and 3.3%～3.5%; Heat treatment state mechanical performance: tensile strength and percentage elongation are respectively 340～344MPa and 6.8%～7.4%).Reduce pouring temperature and can improve alloy organizing and performance, the type of cooling that present melt is reduced to low temperature mainly is an air cooling, but it is thick also can to cause alusil alloy to be organized, and mechanical property is not high, and (the as cast condition mechanical property: tensile strength and percentage elongation are respectively 194～196MPa and 3.6%～3.8%; Heat treatment state mechanical performance: tensile strength and percentage elongation are respectively 346～348MPa and 10.3%～12.5%).Studies show that in recent years, alloy melt is poured into a mould to pouring temperature through Overheating Treatment and heat speed processing Quench thereafter, can improve alloy structure to a great extent, thereby improve the mechanical property of material, but this melt treatment mode needs Overheating Treatment, cause cost up, waste energy, and also more complicated of the married operation of high temperature and low-temperature melt.
Summary of the invention
The present invention is thick for the meeting that solves prior art cast aluminum silicon alloy causes alusil alloy to be organized, and mechanical property is not high, and cost up wastes energy and the problem of complicated operation, and a kind of heat-speed treatment low-temperature pouring method of alusil alloy is provided.
The heat-speed treatment low-temperature pouring method of alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 32.3%～43.2% purity is 99.99wt% by mass percentage, 54.2%～62.5% Al-12Si, 0.4%～0.6% purity is the magnesium of 99.99wt%, 0.2%～0.6% Al-10Sr and 2%～4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720～730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 32.3%～43.2% purity is 99.99wt% by mass percentage, 54.2%～62.5% Al-12Si, 0.4%～0.6% purity is the magnesium of 99.99wt%, 0.2%～0.6% Al-10Sr and 2%～4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720～730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 640～650 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
The heat-speed treatment low-temperature pouring method of alusil alloy of the present invention, fast treatment process of heat and cast cold technology are combined preferably, alloy melt (reduces cost without Overheating Treatment, energy savings), directly melt is carried out heat speed after the refining and handle (simple to operate) with prefabricated congruent Quench material, the melt Quench is to cast cold, heat speed is handled forming core particle active in the melt and is increased, the melt undercooling degree increases, thereby the driving force in the crystallization process increases, the crystallization nucleation that helps melt, the alloy graining tissue obtains refinement, has improved alloy property; The present invention need not special equipment, and cost is lower, and this technology is refinement alusil alloy tissue obviously, and dendrite changes tiny equiax crystal into; The as cast condition mechanical property of alusil alloy is good among the present invention, and tensile strength and percentage elongation reach 210～213MPa and 4.3%～4.7%; The heat treatment state mechanical performance of alusil alloy is good among the present invention, and tensile strength and percentage elongation reach 355～359MPa and 13.5%～15.2%.
Description of drawings
Fig. 1 is the scanning electron figure of the alusil alloy tissue of 720 ℃ of normal high temperature cast in the specific embodiment 11; Fig. 2 is the scanning electron figure that adopts the alusil alloy tissue of air cooling to 650 ℃ cast in the specific embodiment 11; Fig. 3 is the scanning electron figure of the alusil alloy tissue of gained heat-speed treatment low-temperature pouring in the specific embodiment 11; Fig. 4 is the as cast condition mechanical property comparison diagram in the specific embodiment 12; Wherein A is the tensile strength of the alusil alloy of 720 ℃ of normal high temperature cast, B is the tensile strength of the alusil alloy of employing air cooling to 650 ℃ cast, C is the tensile strength of the alusil alloy of gained heat-speed treatment low-temperature pouring in the specific embodiment 12, a is the percentage elongation of the alusil alloy of 720 ℃ of normal high temperature cast, b is the percentage elongation of the alusil alloy of employing air cooling to 650 ℃ cast, and c is the percentage elongation of the alusil alloy of gained heat-speed treatment low-temperature pouring in the specific embodiment 12; Fig. 5 is a heat treatment state mechanical performance comparison diagram in the specific embodiment 14; Wherein D is the tensile strength of the alusil alloy of 720 ℃ of normal high temperature cast, E is the tensile strength of the alusil alloy of employing air cooling to 650 ℃ cast, F is the tensile strength of the alusil alloy of gained heat-speed treatment low-temperature pouring in the specific embodiment 14, d is the percentage elongation of the alusil alloy of 720 ℃ of normal high temperature cast, e is the percentage elongation of the alusil alloy of employing air cooling to 650 ℃ cast, and f is the percentage elongation of the alusil alloy of gained heat-speed treatment low-temperature pouring in the specific embodiment 14.
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: the heat-speed treatment low-temperature pouring method of present embodiment alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 32.3%～43.2% purity is 99.99wt% by mass percentage, 54.2%～62.5% Al-12Si, 0.4%～0.6% purity is the magnesium of 99.99wt%, 0.2%～0.6% Al-10Sr and 2%～4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720～730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 32.3%～43.2% purity is 99.99wt% by mass percentage, 54.2%～62.5% Al-12Si, 0.4%～0.6% purity is the magnesium of 99.99wt%, 0.2%～0.6% Al-10Sr and 2%～4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720～730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 640～650 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
The rotary blowing argon gas is in order to carry out the degasification refining in the present embodiment.
Adding Al-5Ti-1B and Al-10Sr in the present embodiment is in order to carry out refinement and rotten the processing.
Al-12Si, Al-5Ti-1B and Al-10Sr are intermediate alloy in the present embodiment.
The raw material that takes by weighing in present embodiment step 1 and the step 2 keeps congruent and equivalent proportioning.
The specific embodiment two: what present embodiment and the specific embodiment one were different is that melt temperature is controlled at 720 ℃ in the step 1.Other step and parameter are identical with the specific embodiment one.
The specific embodiment three: what present embodiment and the specific embodiment one were different is that melt temperature is controlled at 730 ℃ in the step 1.Other step and parameter are identical with the specific embodiment one.
The specific embodiment four: what present embodiment and the specific embodiment one were different is that melt temperature is controlled at 725 ℃ in the step 1.Other step and parameter are identical with the specific embodiment one.
The specific embodiment five: present embodiment and the specific embodiment one, two, three or four are different is to take by weighing aluminium that 34% purity is 99.99wt%, 62.2% Al-12Si, magnesium that 0.5% purity is 99.99wt%, 0.3% Al-10Sr and 3% Al-5Ti-1B in the step 1 by mass percentage.Other step and parameter are identical with the specific embodiment one, two, three or four.
The specific embodiment six: present embodiment and the specific embodiment five are different is to take by weighing aluminium that 38.5% purity is 99.99wt%, 56.7% Al-12Si, magnesium that 0.4% purity is 99.99wt%, 0.4% Al-10Sr and 4% Al-5Ti-1B in the step 1 by mass percentage.Other step and parameter are identical with the specific embodiment five.
The specific embodiment seven: present embodiment and the specific embodiment five are different is to take by weighing aluminium that 42% purity is 99.99wt%, 54.9% Al-12Si, magnesium that 0.6% purity is 99.99wt%, 0.5% Al-10Sr and 2% Al-5Ti-1B in the step 1 by mass percentage.Other step and parameter are identical with the specific embodiment five.
The specific embodiment eight: what present embodiment was different with the specific embodiment six or seven is that stirring Quench to temperature is 640 ℃ in the step 2.Other step and parameter are identical with the specific embodiment six or seven.
The specific embodiment nine: present embodiment and the specific embodiment eight are different is that to stir Quench to temperature in the step 2 be 650 ℃.Other step and parameter are identical with the specific embodiment eight.
The specific embodiment ten: present embodiment and the specific embodiment ten are different is that to stir Quench to temperature in the step 2 be 645 ℃.Other step and parameter are identical with the specific embodiment ten.
The specific embodiment 11: the heat-speed treatment low-temperature pouring method of present embodiment alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 32.3% purity is 99.99wt% by mass percentage, 62.5% Al-12Si, 0.6% purity is the magnesium of 99.99wt%, 0.6% Al-10Sr and 4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 725 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 32.3% purity is 99.99wt% by mass percentage, 62.5% Al-12Si, 0.6% purity is the magnesium of 99.99wt%, 0.6% Al-10Sr and 4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 645 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
The alusil alloy of present embodiment gained heat-speed treatment low-temperature pouring, alusil alloy tissue (as Fig. 1) with 720 ℃ of normal high temperature cast in the prior art, and adopt the alusil alloy tissue (as Fig. 2) of air cooling to 650 ℃ cast to compare, the alusil alloy tissue of present embodiment gained heat-speed treatment low-temperature pouring, alusil alloy is organized tinyly as shown in Figure 3, and dendrite changes tiny equiax crystal into.
The specific embodiment 12: the heat-speed treatment low-temperature pouring method of present embodiment alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 43.2% purity is 99.99wt% by mass percentage, 54.2% Al-12Si, 0.4% purity is the magnesium of 99.99wt%, 0.2% Al-10Sr and 2% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 43.2% purity is 99.99wt% by mass percentage, 54.2% Al-12Si, 0.4% purity is the magnesium of 99.99wt%, 0.2% Al-10Sr and 2% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 640 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
The as cast condition mechanical property of the alusil alloy of present embodiment gained heat-speed treatment low-temperature pouring, alusil alloy (as A among Fig. 4 and a post) with 720 ℃ of normal high temperature cast in the prior art, and adopt the alusil alloy (as B among Fig. 4 and b post) of air cooling to 650 ℃ cast to compare, the as cast condition mechanical property of the alusil alloy of present embodiment gained heat-speed treatment low-temperature pouring, shown in C among Fig. 4 and c post, tensile strength and percentage elongation reach 210MPa and 4.3%.
The specific embodiment 13: the heat-speed treatment low-temperature pouring method of present embodiment alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 36% purity is 99.99wt% by mass percentage, 60.1% Al-12Si, 0.5% purity is the magnesium of 99.99wt%, 0.4% Al-10Sr and 3% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 36% purity is 99.99wt% by mass percentage, 60.1% Al-12Si, 0.5% purity is the magnesium of 99.99wt%, 0.4% Al-10Sr and 3% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 650 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
The as cast condition mechanical property of the alusil alloy of present embodiment gained heat-speed treatment low-temperature pouring, after tested, tensile strength and percentage elongation reach 213MPa and 4.7%.
The specific embodiment 14: the heat-speed treatment low-temperature pouring method of present embodiment alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 39% purity is 99.99wt% by mass percentage, 55.9% Al-12Si, 0.6% purity is the magnesium of 99.99wt%, 0.5% Al-10Sr and 4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 39% purity is 99.99wt% by mass percentage, 55.9% Al-12Si, 0.6% purity is the magnesium of 99.99wt%, 0.5% Al-10Sr and 4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 725 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 650 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
The heat treatment state mechanical performance of the alusil alloy of present embodiment gained heat-speed treatment low-temperature pouring, alusil alloy (as D among Fig. 5 and d post) with 720 ℃ of normal high temperature cast in the prior art, and adopt the alusil alloy (as E among Fig. 5 and e post) of air cooling to 650 ℃ cast to compare, the heat treatment state mechanical performance of the alusil alloy of present embodiment gained heat-speed treatment low-temperature pouring, shown in F among Fig. 5 and f post, tensile strength and percentage elongation reach 356.5MPa and 14.3%.
The specific embodiment 15: the heat-speed treatment low-temperature pouring method of present embodiment alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 42% purity is 99.99wt% by mass percentage, 55% Al-12Si, 0.5% purity is the magnesium of 99.99wt%, 0.5% Al-10Sr and 2% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 725 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 42% purity is 99.99wt% by mass percentage, 55% Al-12Si, 0.5% purity is the magnesium of 99.99wt%, 0.5% Al-10Sr and 2% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 645 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
The heat treatment state mechanical performance of the alusil alloy of present embodiment gained heat-speed treatment low-temperature pouring, after testing, tensile strength and percentage elongation reach 359MPa and 15.2%.
Claims (6)
1. the heat-speed treatment low-temperature pouring method of an alusil alloy, the heat-speed treatment low-temperature pouring method that it is characterized in that alusil alloy is realized according to the following steps: one, preparation alusil alloy Quench material: take by weighing the aluminium that 32.3%～43.2% purity is 99.99wt% by mass percentage, 54.2%～62.5% Al-12Si, 0.4%～0.6% purity is the magnesium of 99.99wt%, 0.2%～0.6% Al-10Sr and 2%～4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720～730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, skim after leaving standstill 10min, under 720 ℃ condition, alloy liquid is poured into the metal mold ingot casting then, get alusil alloy Quench material; Two, take by weighing the aluminium that 32.3%～43.2% purity is 99.99wt% by mass percentage, 54.2%～62.5% Al-12Si, 0.4%～0.6% purity is the magnesium of 99.99wt%, 0.2%～0.6% Al-10Sr and 2%～4% Al-5Ti-1B, the resistance furnace crucible heating fusing fully that the aluminium that takes by weighing and Al-12Si are put into 7.5KW, and melt temperature is controlled at 720～730 ℃, add the magnesium that takes by weighing then, leave standstill rotary blowing argon gas behind the 10min, add Al-5Ti-1B and the Al-10Sr that takes by weighing again, under 720 ℃ condition, add alusil alloy Quench material after leaving standstill 10min, stirring Quench to temperature is 640～650 ℃ and stops to add alusil alloy Quench material, be poured into after skimming in the metal mold that is preheating to 250 ℃, promptly finish the heat-speed treatment low-temperature pouring of alusil alloy; Wherein the alusil alloy Quench material of step 1 preparation is of a size of φ 20 * 10mm; The purity of argon gas is 99.99wt% in step 1 and the step 2.
2. the heat-speed treatment low-temperature pouring method of a kind of alusil alloy according to claim 1 is characterized in that melt temperature is controlled at 730 ℃ in the step 1.
3. the heat-speed treatment low-temperature pouring method of a kind of alusil alloy according to claim 1 and 2 is characterized in that taking by weighing by mass percentage in the step 1 aluminium that 34% purity is 99.99wt%, 62.2% Al-12Si, magnesium that 0.5% purity is 99.99wt%, 0.3% Al-10Sr and 3% Al-5Ti-1B.
4. the heat-speed treatment low-temperature pouring method of a kind of alusil alloy according to claim 3 is characterized in that taking by weighing by mass percentage in the step 1 aluminium that 38.5% purity is 99.99wt%, 56.7% Al-12Si, magnesium that 0.4% purity is 99.99wt%, 0.4% Al-10Sr and 4% Al-5Ti-1B.
5. the heat-speed treatment low-temperature pouring method of a kind of alusil alloy according to claim 3 is characterized in that taking by weighing by mass percentage in the step 1 aluminium that 42% purity is 99.99wt%, 54.9% Al-12Si, magnesium that 0.6% purity is 99.99wt%, 0.5% Al-10Sr and 2% Al-5Ti-1B.
6. according to the heat-speed treatment low-temperature pouring method of claim 4 or 5 described a kind of alusil alloys, it is characterized in that stirring Quench to temperature in the step 2 is 645 ℃.
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| CN104278166A (en) * | 2013-08-19 | 2015-01-14 | 济南大学 | Method for reducing harmful effect of iron phase in aluminum-silicon alloy |
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| CN104278166A (en) * | 2013-08-19 | 2015-01-14 | 济南大学 | Method for reducing harmful effect of iron phase in aluminum-silicon alloy |
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