ES2020730A6 - Prodn. of passivated near-eutectic aluminium-silicon alloy - comprises adding pre-alloy contg. strontium to melt just before tapping to reduce contact-time and hydrogen pick-up - Google Patents

Prodn. of passivated near-eutectic aluminium-silicon alloy - comprises adding pre-alloy contg. strontium to melt just before tapping to reduce contact-time and hydrogen pick-up

Info

Publication number
ES2020730A6
ES2020730A6 ES9002125A ES9002125A ES2020730A6 ES 2020730 A6 ES2020730 A6 ES 2020730A6 ES 9002125 A ES9002125 A ES 9002125A ES 9002125 A ES9002125 A ES 9002125A ES 2020730 A6 ES2020730 A6 ES 2020730A6
Authority
ES
Spain
Prior art keywords
alloy
prealloy
melt
contg
time
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.)
Expired - Lifetime
Application number
ES9002125A
Other languages
Spanish (es)
Inventor
Wolfgang Vogel
Wolfgang Dietz
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.)
Vereinigte Aluminium Werke AG
Original Assignee
Vereinigte Aluminium Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Publication of ES2020730A6 publication Critical patent/ES2020730A6/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

A quasi Al-Si alloy is rendered passive by adding a prealloy contg. Sr to the alloy directly before the melt is tapped into the mould at a turbulent part of the melt flow. The prealloy is added in the casting channel with the time between alloy addition and tapping being 0.1-5 min. The ratio of Sr (in wt.%) to the (in ml/100g) in the prealloy is min. 5. The H2 content in the prealloy is max. 1.5 ml/100 g. The prealloy is in the form of a wire and is added to the melt continuously or discontinuously. The Sr content in the prealloy is 3-20 wt.% and the prealloy contains fine grained elements. The quasi-eutectic alloy contains 5-14 wt.% Si and the final alloy contains 0.01-0.08 wt.% Sr. ADVANTAGE - By considerably reducing the contact time between alloy melt and Sr-contg. prealloy prior to casting the H2 pick-up is reduced thereby reducing the amt. of final porosity. The resulting pores produced are also finely dispersed.
ES9002125A 1989-08-16 1990-08-06 Prodn. of passivated near-eutectic aluminium-silicon alloy - comprises adding pre-alloy contg. strontium to melt just before tapping to reduce contact-time and hydrogen pick-up Expired - Lifetime ES2020730A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893927057 DE3927057A1 (en) 1989-08-16 1989-08-16 Prodn. of passivated near-eutectic aluminium-silicon alloy - comprises adding pre-alloy contg. strontium to melt just before tapping to reduce contact-time and hydrogen pick-up

Publications (1)

Publication Number Publication Date
ES2020730A6 true ES2020730A6 (en) 1991-09-01

Family

ID=6387233

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9002125A Expired - Lifetime ES2020730A6 (en) 1989-08-16 1990-08-06 Prodn. of passivated near-eutectic aluminium-silicon alloy - comprises adding pre-alloy contg. strontium to melt just before tapping to reduce contact-time and hydrogen pick-up

Country Status (3)

Country Link
DE (1) DE3927057A1 (en)
ES (1) ES2020730A6 (en)
NO (1) NO903095L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621264B4 (en) * 1996-05-25 2005-09-15 Mahle Gmbh Method for producing a cylinder liner

Also Published As

Publication number Publication date
DE3927057A1 (en) 1991-02-21
NO903095D0 (en) 1990-07-11
NO903095L (en) 1991-02-18

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