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WO2016119579A1 - Procédé de production de manière continue d'une suspension métallique semi-solide - Google Patents

Procédé de production de manière continue d'une suspension métallique semi-solide Download PDF

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Publication number
WO2016119579A1
WO2016119579A1 PCT/CN2016/070184 CN2016070184W WO2016119579A1 WO 2016119579 A1 WO2016119579 A1 WO 2016119579A1 CN 2016070184 W CN2016070184 W CN 2016070184W WO 2016119579 A1 WO2016119579 A1 WO 2016119579A1
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WIPO (PCT)
Prior art keywords
semi
solid
slurry
solid metal
metal
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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.)
Ceased
Application number
PCT/CN2016/070184
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English (en)
Chinese (zh)
Inventor
林荣英
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Individual
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Publication date
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Publication of WO2016119579A1 publication Critical patent/WO2016119579A1/fr
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • B22D35/06—Heating or cooling equipment

Definitions

  • the invention belongs to the technical field of semi-solid molding of metals, and in particular relates to a method for continuously producing a semi-solid metal slurry.
  • the method overcomes the defects of the complicated process flow and high production cost in the existing semi-solid metal slurry manufacturing method, is easy to operate, has low production cost, and is easy to realize large-scale industrial application.
  • the present invention adopts the following technical solutions:
  • a method for continuously producing a metal semi-solid slurry comprising the following steps:
  • the semi-solid metal slurry (4) in the step (c) is completely solidified into a solid after being cooled.
  • the newly formed semi-solid metal slurry (1) in the step (e) is cooled to have a solid content of at least 1% by weight.
  • the newly formed semi-solid metal slurry (1) in the step (e) is cooled to have a solid content of at least 10wt%.
  • the newly formed semi-solid metal slurry (1) in the step (e) is cooled to have a solid content of at least 20% by weight.
  • the newly formed semi-solid metal slurry (1) in the step (e) is cooled to have a solid content of not more than 40% by weight.
  • the newly formed semi-solid metal slurry (1) in the step (e) is cooled to have a solid content of not more than 50% by weight.
  • the solid content of the newly formed semi-solid metal slurry (1) in the step (e) is not more than 60% by weight after cooling.
  • the above process can be continually repeated to meet the needs of continuous production; that is, a part of the newly formed semi-solid metal slurry (1) will be taken away for semi-solid processing, and the remaining half
  • the solid metal slurry is in turn added with a quantity of molten metal (5) to form more semi-solid metal paste (1).
  • the remaining semi-solid metal slurry (4) in the vessel (2) has completely solidified into a solid.
  • the time for cooling the remaining semi-solid metal slurry (4) in the vessel (2) may be zero; in the case of the above, generally the remaining semi-solid metal slurry
  • the solids content of body (4) is already relatively high, so no further cooling is required to increase its solids ratio.
  • the time for cooling the newly formed semi-solid metal slurry (1) may be zero; in the case of the newly formed semi-solid metal slurry (1)
  • the solids content has reached the requirements for semi-solid processing, so no further cooling is required to increase its solids ratio.
  • the length of the cooling time in actual production is selected according to the level of solid content in the semi-solid metal slurry and the actual needs.
  • the solid content in the semi-solid metal slurry is high, and the cooling time is correspondingly shorter.
  • the low solids content in the semi-solid metal paste results in a correspondingly longer cooling time.
  • the newly formed semi-solid metal paste (1) has a solids content after cooling of at least 1% by weight, preferably at least 10% by weight, more preferably at least 20% by weight; the key is that a new formation
  • the solid content of the semi-solid metal paste (1) should be selected to ensure that it inhibits the formation of metal dendritic structures and networks during further cooling and solidification.
  • the newly formed semi-solid metal slurry (1) has a solid content after cooling of not more than 60% by weight, preferably not more than 50% by weight, more preferably not more than 40% by weight; a higher solid content may be The slurry is not easily subjected to further semi-solid processing.
  • the solid content of the newly formed semi-solid metal slurry (1) is less than 10% by weight, the viscosity thereof is relatively low; an additional stirring process (such as mechanical stirring, electromagnetic stirring, etc.) may be omitted to achieve the slurry.
  • an additional stirring process such as mechanical stirring, electromagnetic stirring, etc.
  • the purpose of body homogenization when the solid content of the formed semi-solid metal slurry (1) is more than 20% by weight, the viscosity thereof is relatively high, and an additional stirring process (such as mechanical stirring, electromagnetic stirring, etc.) is generally required to achieve uniform slurry. Purpose.
  • the present invention is easy to implement large-scale industrial applications.
  • Figure 1 is a schematic view of the process of the present invention
  • Figure 2 is a photomicrograph of a metal composition of one example of the invention comprising a spherical primary solid phase and a secondary solid phase formed during the cold quenching process.
  • Figure 1 shows four separate steps in a preferred embodiment of the invention.
  • Step 1 shows a container (2) containing a certain weight of semi-solid metal slurry (1).
  • Step 2 shows the container (2) in step 1, the semi-solid metal slurry (1) in the container (2) has been taken out and placed in another container (6); half in the container (6)
  • the solid metal paste (3) will be used for further processing, such as for semi-solid die casting, with some semi-solid metal slurry (4) remaining in the vessel (2).
  • Step 3 shows the semi-solid metal slurry (4) remaining in step 2, and after a certain period of cooling, the solid ratio of the remaining semi-solid metal slurry (4) has increased; in some cases, half The solid metal slurry (4) can be cooled for a sufficient period of time to completely solidify into a solid.
  • Step 4 shows a further container (7) in which the molten metal (5) is contained; a certain amount of molten metal (5) has been added to the container (2) and half of the step 3 Solid metal paste (4) mixed together to form a new half Solid metal paste (1). If necessary, the newly formed semi-solid metal slurry (1) can be further cooled to increase its solid ratio (not shown).
  • the solid ratio of the semi-solid metal paste (1) can be the weight of the molten metal (5) added, the weight of the remaining semi-solid metal paste (4), and the remaining semi-solid metal paste.
  • the cooling time of the body (4) and the parameters such as the cooling time of the newly formed semi-solid metal slurry (1) are adjusted to control. In many cases, it is desirable to control the solid ratio of the semi-solid metal slurry (1) to be between 10 and 30%; since the semi-solid metal slurry (1) has sufficient solid content in this ratio range To prevent the generation of dendrites, while the semi-solid metal slurry (1) still has sufficient fluidity to be poured out of the container (2) (not shown).
  • the above process can be continually repeated to meet the needs of continuous production; that is, a portion of the newly formed semi-solid metal slurry (1) will be removed for semi-solid processing, while the remaining The semi-solid metal slurry is in turn added with a quantity of molten metal (5) to form more semi-solid metal paste (1).
  • a "clay-graphite" crucible having an inner diameter of about 130 mm, a wall thickness of about 16 mm, and a height of about 180 mm is heated to about 620 ° C; then about 5,000 g of molten Al - 7 wt % Si is poured into the crucible.
  • the aluminum alloy in the crucible has become a semi-solid slurry; then about 3000 g is poured out from the crucible.
  • the semi-solid slurry is ready for other use.
  • about 2000 grams of semi-solid slurry remains in the crucible; then the remaining semi-solid slurry in the crucible is naturally cooled for 45 seconds, at which time the semi-solid in the crucible
  • the temperature of the slurry is lowered to about 600 ° C; then about 3000 grams of a molten Al - 7 wt % Si aluminum alloy of about 630 ° C is added to the crucible, at which time the temperature of the aluminum alloy in the crucible is about 612 ° C, which is a new 5000 grams of semi-solid slurry has been formed; then the newly formed semi-solid slurry in the crucible
  • a temperature of about 5000 grams of semi-solid slurry in the crucible falls below about

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Continuous Casting (AREA)

Abstract

La présente invention concerne un procédé de production de manière continue d'une suspension métallique semi-solide, comprenant les étapes suivantes : prévoir dans un récipient (2) la suspension métallique semi-solide (1) ; obtenir du récipient (2) une partie de la suspension métallique semi-solide (3) pour le traitement semi-solide ; refroidir la suspension métallique semi-solide restante (4) dans le récipient (2) pour augmenter son rapport des matières solides ; ajouter du métal fondu (5) au récipient (2) afin de former la nouvelle suspension métallique semi-solide (1), et refroidir la suspension métallique semi-solide (1) pour augmenter son rapport des matières solides ; et répéter les étapes ci-dessus pour produire de manière continue la suspension métallique semi-solide. Le procédé est simple et facile à réguler, et présente de faibles coûts de production, facilitant ainsi l'atteinte d'une application industrielle à grande échelle.
PCT/CN2016/070184 2015-01-30 2016-01-05 Procédé de production de manière continue d'une suspension métallique semi-solide Ceased WO2016119579A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510046803.5 2015-01-30
CN201510046803.5A CN104550888B (zh) 2015-01-30 2015-01-30 一种可连续生产金属半固态浆体的方法

Publications (1)

Publication Number Publication Date
WO2016119579A1 true WO2016119579A1 (fr) 2016-08-04

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CN (1) CN104550888B (fr)
WO (1) WO2016119579A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104550888B (zh) * 2015-01-30 2016-08-31 林荣英 一种可连续生产金属半固态浆体的方法
CN104841896A (zh) * 2015-05-28 2015-08-19 林荣英 一种生产金属半固态浆体的方法
CN105537552A (zh) * 2016-02-02 2016-05-04 曹海平 一种生产半固态浆体的方法及装置
CN112846127B (zh) * 2020-12-30 2022-07-12 福建省金瑞高科有限公司 5g基站散热壳的压铸方法及其应用的半固态压铸方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124232A (ja) * 1990-09-12 1992-04-24 Leotec:Kk 連続式半凝固金属製造装置のスタート方法
EP0745694A1 (fr) * 1995-05-29 1996-12-04 Ube Industries, Ltd. Procédé et dispositif pour mettre des métaux semi-solides en forme
CN101098974A (zh) * 2004-12-10 2008-01-02 M·韦森 生产液-固金属组合物的方法和装置
CN102266914A (zh) * 2011-08-08 2011-12-07 昆明理工大学 一种半固态合金浆料的制备方法
CN104084545A (zh) * 2014-07-25 2014-10-08 无锡职业技术学院 一种铸造Mg-Al合金液态熔体/半固态熔体混液变质方法
CN104550888A (zh) * 2015-01-30 2015-04-29 林荣英 一种可连续生产金属半固态浆体的方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124232A (ja) * 1990-09-12 1992-04-24 Leotec:Kk 連続式半凝固金属製造装置のスタート方法
EP0745694A1 (fr) * 1995-05-29 1996-12-04 Ube Industries, Ltd. Procédé et dispositif pour mettre des métaux semi-solides en forme
CN101098974A (zh) * 2004-12-10 2008-01-02 M·韦森 生产液-固金属组合物的方法和装置
CN102266914A (zh) * 2011-08-08 2011-12-07 昆明理工大学 一种半固态合金浆料的制备方法
CN104084545A (zh) * 2014-07-25 2014-10-08 无锡职业技术学院 一种铸造Mg-Al合金液态熔体/半固态熔体混液变质方法
CN104550888A (zh) * 2015-01-30 2015-04-29 林荣英 一种可连续生产金属半固态浆体的方法

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CN104550888B (zh) 2016-08-31

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