GB803908A - Process for the production of aluminium powder - Google Patents

Process for the production of aluminium powder

Info

Publication number
GB803908A
GB803908A GB5656/57A GB565657A GB803908A GB 803908 A GB803908 A GB 803908A GB 5656/57 A GB5656/57 A GB 5656/57A GB 565657 A GB565657 A GB 565657A GB 803908 A GB803908 A GB 803908A
Authority
GB
United Kingdom
Prior art keywords
aluminium
per cent
steam
powder
atomizing
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
Application number
GB5656/57A
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.)
Aurubis AG
Original Assignee
Norddeutsche Affinerie 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 Norddeutsche Affinerie AG filed Critical Norddeutsche Affinerie AG
Publication of GB803908A publication Critical patent/GB803908A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation

Abstract

Aluminium powder is made by atomizing freely-falling molten aluminium in a closed chamber using an ultrasonic jet or jets of steam, at 3 to 15 atmospheres gauge pressure, as an atomizing medium. The steam outlet is arranged concentrically with the stream of molten aluminium and is spaced from the point of atomization to prevent interference by metal particles. Water is sprayed into the chamber to condense the steam and to reduce the temperature of the aluminium slurry to below 100 DEG C. prior to subsequent oxidation to produce a powder containing 6 per cent-12 per cent aluminium oxide, having a bulk density of between 0.7 and 0.8 gms./cc. and a lubricant content of less than 0.3 per cent. The oxidized powder may be used to make sintered bodies having a high tensile strength and hardness even at high temperatures. Physical properties of such bodies are given in the Specification
GB5656/57A 1956-03-01 1957-02-19 Process for the production of aluminium powder Expired GB803908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE803908X 1956-03-01

Publications (1)

Publication Number Publication Date
GB803908A true GB803908A (en) 1958-11-05

Family

ID=6722008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5656/57A Expired GB803908A (en) 1956-03-01 1957-02-19 Process for the production of aluminium powder

Country Status (1)

Country Link
GB (1) GB803908A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106825593A (en) * 2016-12-23 2017-06-13 南通金源智能技术有限公司 The Al alloy powder preparation method of 3D printing material flowability can be improved

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106825593A (en) * 2016-12-23 2017-06-13 南通金源智能技术有限公司 The Al alloy powder preparation method of 3D printing material flowability can be improved

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