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
GB2981636A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber ScheideanstaltfiledCriticalDegussa GmbH
Priority to GB2981636ApriorityCriticalpatent/GB484480A/en
Publication of GB484480ApublicationCriticalpatent/GB484480A/en
Cleaning And De-Greasing Of Metallic Materials By Chemical Methods
(AREA)
Manufacture And Refinement Of Metals
(AREA)
Abstract
A molten salt bath for the heat-treatment of metals and alloys at temperatures not exceeding 550 DEG C., e.g. 450-500 DEG C., consists of at least two alkaline earth chlorides and also alkali chlorides, preferably common salt, but is free from potassium chloride or contains that salt only up to 10 per cent of the total bath. In an example a bath contains 48 per cent of calcium chloride, 31 of barium chloride and 21 of sodium chloride or 16 of sodium chloride and 5 of lithium chloride. The bath may also contain potassium chloride in an amount not exceeding 10 per cent of the total bath. The metals referred to are iron, aluminium, magnesium and beryllium and the alloys are iron alloys.
GB2981636A1936-11-021936-11-02An improved melt bath for the heat treatment of metals and alloys
ExpiredGB484480A
(en)