EP3423606B1 - Al-gusslegierung - Google Patents

Al-gusslegierung Download PDF

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Publication number
EP3423606B1
EP3423606B1 EP17712001.1A EP17712001A EP3423606B1 EP 3423606 B1 EP3423606 B1 EP 3423606B1 EP 17712001 A EP17712001 A EP 17712001A EP 3423606 B1 EP3423606 B1 EP 3423606B1
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EP
European Patent Office
Prior art keywords
weight
less
advantageous
particularly preferably
casting alloy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17712001.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3423606A1 (de
Inventor
Oliver Grimm
Klaus Greven
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSM Castings Group GmbH
Original Assignee
KSM Castings Group GmbH
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Filing date
Publication date
Application filed by KSM Castings Group GmbH filed Critical KSM Castings Group GmbH
Publication of EP3423606A1 publication Critical patent/EP3423606A1/de
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Classifications

    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • 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
    • C22F1/043—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 with silicon as the next major constituent

Definitions

  • the invention relates to an aluminum casting alloy.
  • the object of the invention is to provide an improved low-Si Al cast alloy which has been further developed, in particular with regard to its mechanical properties.
  • an Al cast alloy the at least five of the following alloy components Si: 3.0 to 3.8% by weight Mg: 0.3 to 0.8% by weight Cr: 0.05 to 0.35% by weight Fe: ⁇ 0.18% by weight Mn: ⁇ 0.06% by weight Ti: ⁇ 0.16% by weight Cu: 0.006 - 0.015% by weight Sr: 0.010 to 0.030% by weight Zr ⁇ 0.006% by weight Zn ⁇ 0.006% by weight Impurities: ⁇ 0.1% by weight contains and is supplemented to 100 wt .-% with Al.
  • Such an Al cast alloy is stronger, tougher and more ductile compared to the prior art.
  • alloy components according to the invention in the order of magnitude mentioned leads to a further significant improvement in the mechanical properties, which can already be seen in the as-cast state, but in particular in the case of a cast component after a 2-stage heat treatment, namely solution annealing and subsequent aging, between them in both heat treatment stages, preferably quenching the cast component in water is provided.
  • a cast component after a 2-stage heat treatment namely solution annealing and subsequent aging, between them in both heat treatment stages, preferably quenching the cast component in water is provided.
  • wheel-guiding components very preferably for damper stilts, wheel carriers and in particular swivel bearings, but also for handlebars, this results in overall increased mechanical parameters.
  • Cu with a content of more than 0.006% by weight, preferably more than 0.007% by weight, particularly preferably more than 0.008% by weight, very particularly preferably at least 0.009 wt .-% is included.
  • Cu has a content of less than 0.015% by weight, preferably less than 0.013% by weight, particularly preferably less than 0.012% by weight, very particularly preferably of less than 0.011% by weight.
  • the alloys according to the invention can contain production-related impurities, e.g. Pb, Ni, etc., as they are generally known to those skilled in the art.
  • Si contains more than 3.1% by weight, preferably more than 3.3% by weight, particularly preferably more than 3.4% by weight. % is included.
  • Si is present with a content of less than 3.7% by weight, preferably less than 3.5% by weight.
  • Si is present in a content of more than 3.3 to less than 3.7% by weight.
  • Si is contained in a content of more than 3.0 to less than 3.3% by weight.
  • Mg contains more than 0.40% by weight, preferably more than 0.50% by weight, particularly preferably more than 0.55% by weight. % is included.
  • Mg is contained with a content of less than 0.70% by weight, preferably less than 0.60% by weight
  • Cr has a content of more than 0.10% by weight, preferably more than 0.15% by weight, particularly preferably more than 0.20% by weight. %, very particularly preferably of more than 0.25% by weight, is contained.
  • Cr is contained with a content of at most 0.30% by weight, preferably less than 0.30% by weight.
  • Fe contains more than 0.01% by weight, preferably more than 0.05% by weight, particularly preferably more than 0.07% by weight. % is included. To optimize the mechanical parameters, it can be advantageous if Fe is contained in a content of less than 0.15% by weight, preferably less than 0.12% by weight.
  • Mn is contained with a content of more than 0.01% by weight, preferably of more than 0.02% by weight.
  • Ti contains more than 0.01% by weight, preferably more than 0.03% by weight, particularly preferably more than 0.04% by weight. % is included.
  • Sr is contained with a content of more than 0.015% by weight, preferably of more than 0.020% by weight.
  • Sr is contained with a content of less than 0.030% by weight, preferably less than 0.025% by weight.
  • Zr is contained with a content of more than 0.001% by weight.
  • Zr is present in a content of less than 0.005% by weight, preferably less than 0.004% by weight, particularly preferably less than 0.003% by weight.
  • Zn is contained with a content of more than 0.001% by weight, preferably of more than 0.002% by weight.
  • Zn is contained in a content of less than 0.005% by weight, preferably less than 0.004% by weight.
  • impurities are present with a content of less than 0.05% by weight, preferably less than 0.035% by weight.
  • the aluminum casting alloy according to the invention is a low-pressure aluminum casting alloy.
  • the invention also relates to a method for producing a cast component from an Al cast alloy according to one of Claims 1 to 22, in which the low-pressure casting method is used.
  • the aluminum casting alloy is a back pressure (CPC) aluminum casting alloy.
  • the invention also relates to a method for producing a cast component from an aluminum cast alloy according to one of claims 1 to 22, in which the low-pressure counter-pressure casting method is used.
  • motor vehicles made of the cast alloy according to the invention are fundamentally suitable for various permanent molding processes. Due to the very good mechanical properties of highly stressed wheel-guiding parts of motor vehicles are suitable but especially the low-pressure die casting and the back pressure casting process (CPC process), which is also referred to as the back pressure die casting process, as a manufacturing process.
  • CPC process back pressure casting process
  • Squeeze casting, gravity die casting or die casting, in particular thixo, rheo can advantageously be used as a manufacturing process for cast components, in particular as chassis parts, preferably as wheel-guiding parts, very preferably as damper stilts, wheel carriers or swivel bearings, of motor vehicles made from the cast alloy according to the invention - or low pressure sand casting, find application.
  • the cast components are subjected to a two-stage heat treatment, namely solution annealing and subsequent hot aging. It can be advantageous if the cast component is quenched in water between the two heat treatment stages.
  • the cast component is between 530 ° C. and 550 ° C. for 6 to 10 hours, preferably between 540 ° C. and 550 ° C. for 7 to 9 hours, in particular for 8 to 9 hours, very particularly preferably between more than 540 ° C and 550 ° C for 7 to 9 h, especially for 8 to 9 h, solution annealed.
  • the cast component is between 180 ° C. and 210 ° C. for 1 to 8 hours, in particular for 1 to 6.5 hours, preferably between 180 ° C. and 190 ° C. for 1 to 6.5 hours, in particular for 4 to 6.5 hours, particularly preferably between 180 ° C. and less than 190 ° C. for 4 to 6.5 hours, in particular for 5 to 6.5 hours.
  • the invention further provides for the use of an aluminum casting alloy according to one of the claims or of a heat-treated cast component according to one of the claims for chassis parts of motor vehicles, preferably for wheel-guiding components of motor vehicles, very particularly preferably for damper stilts, wheel carriers or pivot bearings of motor vehicles.
  • the cast components have an improved strength-elongation ratio with improved structural properties.
  • the casting process on the one hand enables a casting to be free from major defects, known as blowholes, and on the other hand the microstructure in in such a way that the number of internal notches that reduce the elongation at break is kept as low as possible.
  • the aluminum casting alloy according to the invention has proven to be particularly suitable, in particular, for components subject to greater stress, such as damper stilts, wheel carriers or swivel bearings.
  • the very preferred process for the production of such heavily used components is the counter-pressure die casting process (CPC process).
  • Cast components according to the invention which are produced from an Al cast alloy according to one of the claims and / or according to a method according to one of the claims, are characterized after a heat treatment by an elastic limit R P 0.2 of 300 to 330 MPa, preferably of> 320 to 330 MPa, and / or an elongation at break A5 of 7 to 11%, preferably 8.5 to 10%, particularly preferably 9 to 9.5%, and / or a tensile strength R m of 350-375 MPa, preferably of> 360 -375 MPa, from.
  • a so-called "French tension rod" according to DIN 50125 is separated from a swivel bearing produced by means of a counter-pressure die casting process (CPC process), the swivel bearing being heat treated beforehand ( Solution annealing 540 ° C for 8h, quenching in water, hot aging 180 ° C for 6.5h).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Sliding-Contact Bearings (AREA)
  • Air Bags (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Conductive Materials (AREA)
EP17712001.1A 2016-03-01 2017-02-16 Al-gusslegierung Active EP3423606B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016103626 2016-03-01
PCT/DE2017/100117 WO2017148468A1 (de) 2016-03-01 2017-02-16 Al-gusslegierung

Publications (2)

Publication Number Publication Date
EP3423606A1 EP3423606A1 (de) 2019-01-09
EP3423606B1 true EP3423606B1 (de) 2020-08-05

Family

ID=58360773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17712001.1A Active EP3423606B1 (de) 2016-03-01 2017-02-16 Al-gusslegierung

Country Status (6)

Country Link
US (1) US20190055628A1 (ja)
EP (1) EP3423606B1 (ja)
JP (1) JP2019512051A (ja)
CN (1) CN108699639A (ja)
DE (2) DE112017001083A5 (ja)
WO (1) WO2017148468A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113005335A (zh) * 2021-02-22 2021-06-22 李秋明 新型铝合金材料、薄壁件和金属手模
EP4101941A1 (en) * 2021-06-07 2022-12-14 Dubai Aluminium PJSC Aluminium-silicon casting alloy, and castings made from said alloy

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2827306B1 (fr) * 2001-07-10 2004-10-22 Pechiney Aluminium Alliage d'aluminium a haute ductilite pour coulee sous pression
CN101248200A (zh) * 2005-08-31 2008-08-20 Ksm铸造有限公司 铸造铝合金
DE102006040720A1 (de) * 2005-08-31 2007-03-01 Ksm Castings Gmbh AI-Gusslegierungen
WO2009059593A2 (de) 2007-11-08 2009-05-14 Ksm Castings Gmbh Ai/si-gusslegierungen
DE102008055926B4 (de) * 2007-11-08 2012-01-26 Ksm Castings Gmbh Vorderachsträger für Kraftfahrzeuge
DE102012108590A1 (de) 2011-10-11 2013-04-11 Ksm Castings Group Gmbh Gussstück
DE102013108127A1 (de) * 2012-08-23 2014-02-27 Ksm Castings Group Gmbh Al-Gusslegierung
WO2014121785A1 (de) 2013-02-06 2014-08-14 Ksm Castings Group Gmbh Al-GUSSLEGIERUNG
JP6534282B2 (ja) * 2015-04-06 2019-06-26 住友化学株式会社 高純度アルミニウム粒材およびその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN108699639A (zh) 2018-10-23
DE112017001083A5 (de) 2018-11-22
DE102017103148A1 (de) 2017-09-07
US20190055628A1 (en) 2019-02-21
WO2017148468A1 (de) 2017-09-08
JP2019512051A (ja) 2019-05-09
EP3423606A1 (de) 2019-01-09

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