DE316800C - - Google Patents

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Publication number
DE316800C
DE316800C DENDAT316800D DE316800DA DE316800C DE 316800 C DE316800 C DE 316800C DE NDAT316800 D DENDAT316800 D DE NDAT316800D DE 316800D A DE316800D A DE 316800DA DE 316800 C DE316800 C DE 316800C
Authority
DE
Germany
Prior art keywords
hardening
effect
water
steel
glycerine
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
DENDAT316800D
Other languages
German (de)
Publication of DE316800C publication Critical patent/DE316800C/de
Active legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Description

P λ τ κ ν τ -Anspruch:P λ τ κ ν τ claim:

Stahlhärtebad, gekennzeichnet durch die Anwendung von Glykolcn in konzentrierter oder verdünnter Form.Steel hardening bath, characterized by the use of concentrated glycol or diluted form.

* jn,v*, ■■ -'* jn, v *, ■■ - '

Claims (1)

Die vorliegende Erfindung betrifft ein Ver-. fahren zur Härtung von Stahl, im wesentlichen gekennzeichnet durch die Anwendung von Athylenglykol als Härtebad. In seiner Härtewirkung ist Glykol an und für sich weitaus besser als die allgemein verwendeten Härteöle, jedoch kann die Härtewirkung durch Mischung mit Wasser noch gesteigert werden.The present invention relates to a ver. drive to the hardening of steel, essentially characterized by the use of ethylene glycol as a hardening bath. In its The hardening effect of glycol in and of itself is far better than the commonly used ones Hardening oils, however, the hardening effect can be increased by mixing with water will. ίο Nach Reiser »Das Härten des Stahles in Theorie und Praxis« JV. Aufl., S. ι ι r, ist als Härteflüssigkeit Wasser mit Spiritus erwähnt. Letzterer härtet je nach Größe des Zusatzes wenig oder gar nicht. Nach der deutschen Patentschrift 70291 besteht das , Kühlbad aus Glyzerin, Wasser und Stärke, ■ und nach der deutschen Patentschrift 128490 wird als Härtungsmiticl eine wässerige Glyzerinlösung, welcher zur Erhöhung der Wir-J kung noch Chloride der Alkalien zugesetzt werden, verwendet.ίο According to Reiser »The hardening of steel in theory and practice «JV. Ed., P. Ι ι r, is mentioned as hardening liquid water with alcohol. The latter hardens depending on the size of the Little or no addition. According to German patent specification 70291, this exists , Cooling bath made of glycerine, water and starch, ■ and according to German patent specification 128490 an aqueous glycerine solution is used as the hardening agent, which added chlorides of the alkalis to increase the effect are used. Ln Gegensatz zu diesen bekannten Verfahren benutzt das vorliegende ausschließlich reines oder verdünntes Glykol, welches in seiner Wirkung dem Spiritus und Glyzerin überlegen ist.In contrast to these known methods, the present one uses exclusively pure or diluted glycol, which in its effect is similar to alcohol and glycerine is superior. Wird das auf Kirschrolgluf: erhitzte Stahlstück in dem aus Athylenglykol bestehenden Härtebad der vollständigen Abkühlung überlassen, so wird eine nahe der Wasserhärtung 3« liegende Wirkung erzielt, dabei aber die Nachteile der Wasserhärtung vermieden.Will that on cherry roll: heated piece of steel in the one made of ethylene glycol Leave the hardening bath to cool completely, so a water hardening level close to 3 " Achieved horizontal effect, but avoided the disadvantages of water hardening.
DENDAT316800D Active DE316800C (en)

Publications (1)

Publication Number Publication Date
DE316800C true DE316800C (en)

Family

ID=569480

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT316800D Active DE316800C (en)

Country Status (1)

Country Link
DE (1) DE316800C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1242660B (en) * 1963-06-29 1967-06-22 Union Carbide Corp Quenching medium for quenching heat-treated metal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1242660B (en) * 1963-06-29 1967-06-22 Union Carbide Corp Quenching medium for quenching heat-treated metal

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