CN106086553B - A kind of aluminium alloy extrusions and its manufacture method for bar penetrating type heat-insulation section bar - Google Patents

A kind of aluminium alloy extrusions and its manufacture method for bar penetrating type heat-insulation section bar Download PDF

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CN106086553B
CN106086553B CN201610662380.4A CN201610662380A CN106086553B CN 106086553 B CN106086553 B CN 106086553B CN 201610662380 A CN201610662380 A CN 201610662380A CN 106086553 B CN106086553 B CN 106086553B
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aluminium alloy
alloy extrusions
bar
minutes
section bar
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CN106086553A (en
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徐引生
丁年锋
高阳
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ZHEJIANG BOAO ALUMINIUM CO Ltd
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ZHEJIANG BOAO ALUMINIUM CO Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • 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
    • C22F1/05—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 of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Extrusion Of Metal (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The invention discloses a kind of aluminium alloy extrusions for bar penetrating type heat-insulation section bar, the composition and percentage by weight of the aluminium alloy extrusions are：Mg：0.48~0.52%, Cu：0.03~0.04%, Si：0.40~0.45%, Mn：0.035~0.045%, Fe：＞ 0 and ＜ 0.11%, Cr：0.035~0.04%, Ti：0.025~0.035%, surplus Al, the percentage by weight sum of each component is 100%.Aluminium alloy extrusions of the present invention significantly improves the mechanical property of section bar, had compared with high-tensile by adjusting the proportion relation of each composition, reach more than 220MPa, while there is preferable extension strength again, reach more than 200MPa, higher elongation after fracture, reaches more than 12%.

Description

A kind of aluminium alloy extrusions and its manufacture method for bar penetrating type heat-insulation section bar
Technical field
The present invention relates to a kind of aluminium alloy extrusions and its manufacture method for bar penetrating type heat-insulation section bar.
Background technology
Country advocates the application of building energy conservation section bar energetically, and bar inserting type heat-insulated is main building energy conservation material Material, application is more and more extensive, but bar penetrating type heat-insulation section bar manufacturing process has to pass through one of rolling technology, makes heat-barrier material by aluminium Alloy profile is firmly engaged, and in rolling process, the existing easy pressure break of 6063-T5 materials, scraps more, low production efficiency.
When making curtain wall, 6063-T6 materials are applied than wide, but also because the reason for ftractureing, should not make T6 processing The penetrating bar type curtain wall of heat insulation aluminum alloy material of state, it greatly limit penetrating bar type heat-insulation aluminium alloy answering in curtain wall profiles field With.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of aluminium alloy extrusions for bar penetrating type heat-insulation section bar, the aluminium alloy Section bar, not only tensile strength performance is good, and the performance such as extension strength and elongation after fracture is also greatly improved, therefore is wearing Bar type aluminium alloy section bar carries out rolling compound tense, aluminium alloy extrusions will not pressure break, substantially increase production efficiency, also solve T6 The penetrating bar type section bar of curtain wall of heat insulation aluminum alloy application of processing provides technical conditions.
The technical solution adopted by the present invention is：
A kind of aluminium alloy extrusions for bar penetrating type heat-insulation section bar, the composition and percentage by weight of the aluminium alloy extrusions are： Mg：0.48~0.52%, Cu：0.03~0.04%, Si：0.40~0.45%, Mn：0.035~0.045%, Fe：＞ 0 and ＜ 0.11%th, Cr：0.035~0.04%, Ti：0.025~0.035%, surplus Al, the percentage by weight sum of each component are 100%.
A kind of manufacture method of aluminium alloy extrusions for bar penetrating type heat-insulation section bar, comprises the following steps：
(1) weigh furnace charge by formulation ratio, take aluminium ingot to add and fusing is heated in melting furnace, when melt temperature reaches 710~ At 725 DEG C, sequentially add Al-8wt%Mg intermediate alloys, Al-1.5wt%Cr intermediate alloys, Al-2wt%Mn intermediate alloys, beat Slag agent, refining agent, stir 30~40 minutes；
(2) 700~710 DEG C are cooled to melting furnace, after adding furnace charge whole fusing, stirs 15~20 minutes, makes composition Uniformly, refining agent being blown at liquation face 2/3 by nitrogen and refined, refining agent dosage is the 0.5-1% of liquation weight, Refining is skimmed after 10~12 minutes, stands 20~30 minutes；
(3) temperature of melting furnace is adjusted to 710-725 DEG C, after stirring 10-15 minutes, sampling analysis, is adjusted to qualified；With Gas flow is that 2-3L/min leads to 70%N2+ 20%Ar+10%Cl2Mixed gas refinery by de-gassing 15-20min, skims, and insulation is quiet The cast that can come out of the stove after 10-20min is put, pouring temperature is 710-720 DEG C, casting speed 100-150mm/min, cools down current Measure as 2000-3000L/min；
(4) by strand extrusion forming, extrusion temperature is 480-500 DEG C, extruding rate 20-35m/min, then will extrusion Section bar using online air-cooled or water smoke Cooling Quenching, tension straingtening is carried out after quenching, stretcher strain amount is 1-2%；
(5) aluminium alloy extrusions after tension straingtening is subjected to Ageing Treatment：3.5h is first incubated at 200-210 DEG C, then it is empty Air cooling is to room temperature.
Preferably, described refining agent is made up of the component of following parts by weight：Sodium nitrate 18-24, potassium fluotitanate 5-10, Potassium chloride 33-41, zinc chloride 15-20, sodium sulphate 3-8, phosphorus pentachloride 10-15, sodium fluoborate 12-18, aluminum fluoride 8-14, carbonic acid Calcium 16-22, charcoal powder 10-15.
Aluminium alloy extrusions of the present invention significantly improves the mechanical property of section bar, tool by adjusting the proportion relation of each composition Have compared with high-tensile, reach more than 220MPa, while there is preferable extension strength again, reach more than 200MPa, and it is higher Elongation after fracture, reach more than 12%, therefore rolling compound tense is carried out in penetrating bar type aluminium alloy section bar, aluminium alloy extrusions will not Pressure break, substantially increases production efficiency, and the penetrating bar type heat-insulating curtain wall section application for also solving T6 processing provides technical conditions, It is meanwhile highly polished using the production technology of the present invention, Surface of profile.
Embodiment
The present invention is described in further detail below by specific embodiment.
A kind of aluminium alloy extrusions for bar penetrating type heat-insulation section bar, the composition and percentage by weight of the aluminium alloy extrusions are： Mg：0.48~0.52%, Cu：0.03~0.04%, Si：0.40~0.45%, Mn：0.035~0.045%, Fe：＞ 0 and ＜ 0.11%th, Cr：0.035~0.04%, Ti：0.025~0.035%, surplus Al, the percentage by weight sum of each component are 100%.
A kind of manufacture method for bar inserting type heat-insulated, comprise the following steps：
(1) weigh furnace charge by formulation ratio, take aluminium ingot to add and fusing is heated in melting furnace, when melt temperature reaches 710~ At 725 DEG C, sequentially add Al-8wt%Mg intermediate alloys, Al-1.5wt%Cr intermediate alloys, Al-2wt%Mn intermediate alloys, beat Slag agent, refining agent, stir 30~40 minutes；
(2) 700~710 DEG C are cooled to melting furnace, after adding furnace charge whole fusing, stirs 15~20 minutes, makes composition Uniformly, refining agent being blown at liquation face 2/3 by nitrogen and refined, refining agent dosage is the 0.5-1% of liquation weight, Refining is skimmed after 10~12 minutes, stands 20~30 minutes；
(3) temperature of melting furnace is adjusted to 710-725 DEG C, after stirring 10-15 minutes, sampling analysis, is adjusted to qualified；With Gas flow is that 2-3L/min leads to 70%N2+ 20%Ar+10%Cl2Mixed gas refinery by de-gassing 15-20min, skims, and insulation is quiet The cast that can come out of the stove after 10-20min is put, pouring temperature is 710-720 DEG C, casting speed 100-150mm/min, cools down current Measure as 2000-3000L/min；
(4) by strand extrusion forming, extrusion temperature is 480-500 DEG C, extruding rate 20-35m/min, then will extrusion Section bar using online air-cooled or water smoke Cooling Quenching, tension straingtening is carried out after quenching, stretcher strain amount is 1-2%；
(5) aluminium alloy extrusions after tension straingtening is subjected to Ageing Treatment：3.5h is first incubated at 200-210 DEG C, then it is empty Air cooling is to room temperature.
Described refining agent is made up of the component of following parts by weight：Sodium nitrate 18-24, potassium fluotitanate 5-10, potassium chloride 33- 41st, zinc chloride 15-20, sodium sulphate 3-8, phosphorus pentachloride 10-15, sodium fluoborate 12-18, aluminum fluoride 8-14, calcium carbonate 16-22, Charcoal powder 10-15.
Refining agent in step (1) and (2) is combined, and substantially increases refining effect, through examining, gained aluminium alloy extrusions Main performance be：Tensile strength reaches more than 220MPa, and extension strength reaches more than 200MPa, and elongation after fracture reaches 12% More than.

Claims (2)

1. a kind of aluminium alloy extrusions for bar penetrating type heat-insulation section bar, it is characterised in that the composition and weight of the aluminium alloy extrusions Percentage is：Mg：0.48~0.52%, Cu：0.03~0.04%, Si：0.40~0.45%, Mn：0.035~0.045%, Fe：＞ 0 and ＜ 0.12%, Cr：0.035~0.04%, Ti：0.025~0.035%, surplus Al, the weight percent of each component It is 100% than sum, the manufacture method of the aluminium alloy extrusions comprises the following steps：
(1) furnace charge is weighed by formulation ratio, takes aluminium ingot to add and fusing is heated in melting furnace, when melt temperature reaches 710~725 DEG C When, sequentially add Al-8wt%Mg intermediate alloys, Al-1.5wt%Cr intermediate alloys, Al-2wt%Mn intermediate alloys, slagging agent, Refining agent, stir 30~40 minutes；
(2) 700~710 DEG C are cooled to melting furnace, after adding furnace charge whole fusing, stirs 15~20 minutes, makes composition uniform, Refining agent is blown at liquation face 2/3 by nitrogen and refined, refining agent dosage is the 0.5-1% of liquation weight, is refined Skimmed after 10~12 minutes, stand 20~30 minutes；
(3) temperature of melting furnace is adjusted to 710-725 DEG C, after stirring 10-15 minutes, sampling analysis, is adjusted to qualified；With gas Flow is that 2-3L/min leads to 70%N2+ 20%Ar+10%Cl2Mixed gas refinery by de-gassing 15-20min, skims, and insulation stands 10- Can come out of the stove cast after 20min, and pouring temperature is 710-720 DEG C, casting speed 100-150mm/min, and cooling water flow is 2000-3000L/min；
(4) by strand extrusion forming, extrusion temperature is 480-500 DEG C, extruding rate 20-35m/min, then by the type of extrusion Material carries out tension straingtening, stretcher strain amount is 1-2% using online air-cooled or water smoke Cooling Quenching after quenching；
(5) aluminium alloy extrusions after tension straingtening is subjected to Ageing Treatment：First it is incubated 3.5h at 200-210 DEG C, then air is cold But to room temperature.
2. a kind of aluminium alloy extrusions for bar penetrating type heat-insulation section bar according to claim 1, it is characterised in that described Refining agent is made up of the component of following parts by weight：Sodium nitrate 18-24, potassium fluotitanate 5-10, potassium chloride 33-41, zinc chloride 15- 20th, sodium sulphate 3-8, phosphorus pentachloride 10-15, sodium fluoborate 12-18, aluminum fluoride 8-14, calcium carbonate 16-22, charcoal powder 10-15.
CN201610662380.4A 2016-08-12 2016-08-12 A kind of aluminium alloy extrusions and its manufacture method for bar penetrating type heat-insulation section bar Active CN106086553B (en)

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CN111041291B (en) * 2019-12-25 2021-02-19 佛山市三水凤铝铝业有限公司 High-strength aluminum alloy material and preparation method thereof
CN111560548A (en) * 2020-06-01 2020-08-21 凯米特新材料科技有限公司 High-precision high-strength light aluminum alloy section for high-speed rail and preparation method thereof
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