DE363194C - Hardening agent for surface hardening, consisting of calcium cyanamide with the known flux and binding agents - Google Patents

Hardening agent for surface hardening, consisting of calcium cyanamide with the known flux and binding agents

Info

Publication number
DE363194C
DE363194C DEH83395D DEH0083395D DE363194C DE 363194 C DE363194 C DE 363194C DE H83395 D DEH83395 D DE H83395D DE H0083395 D DEH0083395 D DE H0083395D DE 363194 C DE363194 C DE 363194C
Authority
DE
Germany
Prior art keywords
hardening
calcium cyanamide
binding agents
known flux
surface hardening
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
DEH83395D
Other languages
German (de)
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.)
CHEM FAB LIST GmbH
E DE HAEEN
FRANZ STEIMMIG DR ING
Original Assignee
CHEM FAB LIST GmbH
E DE HAEEN
FRANZ STEIMMIG DR ING
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 CHEM FAB LIST GmbH, E DE HAEEN, FRANZ STEIMMIG DR ING filed Critical CHEM FAB LIST GmbH
Priority to DEH83395D priority Critical patent/DE363194C/en
Application granted granted Critical
Publication of DE363194C publication Critical patent/DE363194C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
    • C23C8/62—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Description

Härtemittel fär Oberflächenhärtung, bestehend aus Kalkstickstoff mit den bekannten Fluß- und Bindemitteln. Bei der Einsatz- oder Oberflächenhärtung handelt es sich. bekanntlich darum, in die Oberfläche von Stahl bei der Härtungstemperatur in möglichst kurzer Zeit möglichst viel Kohlenstoff einzubringen.Hardener for surface hardening, consisting of calcium cyanamide with the known fluxes and binders. Case hardening or surface hardening is involved it is. as is well known, in the surface of steel at the hardening temperature to bring in as much carbon as possible in the shortest possible time.

Bisher wurden als Zementier- oder Härtemittel für die Oberflächenhärtung hauptsächlich verwendet: fester Kohlenstoff verschiedener Herkunft, insbesondere Holzkohle und Ruß mit animalischen stickstoff- und kohlenstoffhaltigen Stoffen wie Knochen-, Horn-, Lederkohle, Horn- und Klauenspänen und Blutlaugensatz.So far have been used as cementing or hardening agents for surface hardening mainly used: solid carbon of various origins, in particular Charcoal and soot with animal substances containing nitrogen and carbon such as Bone, horn, leather charcoal, horn and claw shavings and blood liquor set.

Man hat ferner bereits vorgeschlagen, reiner oder technischen Kalkstickstoff allein oder unte-Zusatz eines als Flußmittel dienenden Alkalisalzes zum Zementieren zu benutzen.It has also been proposed to use pure or technical calcium cyanamide alone or with the addition of an alkali salt serving as a flux for cementing to use.

Es hat sich nun ergeben, daß die Eigenschaften des Kalkstickstoffes für die Zwecke der Härtung besser ausgenutzt werden können, wenn man dem Kalkstickstoff Zellstoffablaugc zusetzt. Demgemäß besteht das neue Härtungsmittel nach der Erfindung aus einer Mischung von Kalkstickstoff mit Zellstoffablauge, der man zweckmäßig ein oder mehrere Fluß- oder Bindemittel wie Kochsalz und Salpeter zusetzt. Ebenso hat sich ein Zusatz von Holzkohle als zweckmäßig erwiesen. Der Zusatz an Zellstoffablauge beträgt etwa xo bis 2o Prozent auf Kalkstickstoff bezogen. Man kann indessen auch noch mehr hinzufügen.It has now been found that the properties of calcium cyanamide for the purpose of hardening can be better exploited if you have calcium cyanamide Pulp waste liquor added. Accordingly, there is the new curing agent of the invention from a mixture of calcium cyanamide with pulp waste liquor, which one expediently a or several fluxes or binders such as table salt and saltpeter are added. Likewise has an addition of charcoal proved to be useful. The addition of pulp waste liquor is about xo to 2o percent based on calcium cyanamide. One can, however, too add even more.

Besonders vorteilhaft ist eine Mischung von etwa sechs Teilen Kalkstickstoff, einem Teil Zelistoffablauge, zwölf Teilen Kochsalz mit Salpeter und vier Teilen Holzkohle.A mixture of about six parts calcium cyanamide is particularly advantageous, one part Zelistoffablauge, twelve parts table salt with saltpeter and four parts Charcoal.

Claims (1)

PATENT-ANSPRUcH: -Härtemittel für Oberflächenhärtung, bestehend aus Kalkstickstoff mit den bekannten Fluß- und Bindemitteln, gekennzeichnet durch den Zusatz von Zellstoffablauge.PATENT CLAIM: -Hardener for surface hardening, consisting of Calcium cyanamide with the known fluxes and binders, characterized by the Addition of pulp waste liquor.
DEH83395D 1920-12-08 1920-12-08 Hardening agent for surface hardening, consisting of calcium cyanamide with the known flux and binding agents Expired DE363194C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH83395D DE363194C (en) 1920-12-08 1920-12-08 Hardening agent for surface hardening, consisting of calcium cyanamide with the known flux and binding agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH83395D DE363194C (en) 1920-12-08 1920-12-08 Hardening agent for surface hardening, consisting of calcium cyanamide with the known flux and binding agents

Publications (1)

Publication Number Publication Date
DE363194C true DE363194C (en) 1922-11-04

Family

ID=7164008

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH83395D Expired DE363194C (en) 1920-12-08 1920-12-08 Hardening agent for surface hardening, consisting of calcium cyanamide with the known flux and binding agents

Country Status (1)

Country Link
DE (1) DE363194C (en)

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