DE392674C - Method for covering the insert boxes - Google Patents

Method for covering the insert boxes

Info

Publication number
DE392674C
DE392674C DET24601D DET0024601D DE392674C DE 392674 C DE392674 C DE 392674C DE T24601 D DET24601 D DE T24601D DE T0024601 D DET0024601 D DE T0024601D DE 392674 C DE392674 C DE 392674C
Authority
DE
Germany
Prior art keywords
boxes
covering
powder
insert
insert boxes
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
DET24601D
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.)
INH DIPL ING LEMBACH
SCHAFFERT ING
TECH LAB und MASCHINENFABRIK
Original Assignee
INH DIPL ING LEMBACH
SCHAFFERT ING
TECH LAB und MASCHINENFABRIK
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 INH DIPL ING LEMBACH, SCHAFFERT ING, TECH LAB und MASCHINENFABRIK filed Critical INH DIPL ING LEMBACH
Priority to DET24601D priority Critical patent/DE392674C/en
Application granted granted Critical
Publication of DE392674C publication Critical patent/DE392674C/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
    • 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
    • C23C8/64—Carburising
    • C23C8/66—Carburising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Description

Verfahren zum Abdecken der Einsatzkästen. Die Oberflächenhärtung kohlenstoffarmen Eisens erfolgt bekanntlich in der Weise, daß die zu härtenden Gegenstände in mit kohlenstoffabgebendem Härtepulver gefüllte eiserne Kästen eingebettet, dann in diesen Kästen in den Härteofen gebracht und geglüht werden. Während des Glühens entwickeln sich kohlenstoffhaltige Gase, die durch einen gasdichten Abschluß der Kästen am Entweichen verhindert werden müssen. Zu diesem Zwecke werden die Einsatzkästen mit Deckel versehen und an den Fugen mit Lehm abgedichtet, oder aber das Härtepulver in den Kästen wird unmittelbar von feuerbeständigen Stoffen abgedeckt, die eine kieselsäurereiche, sinternde Schlacke auf dem Härtepulver bilden.Method for covering the insert boxes. The surface hardening low carbon Iron is known to be done in such a way that the objects to be hardened in with carbon-releasing hardness powder is embedded in iron boxes, then in them Boxes are brought into the hardening furnace and annealed. Develop while glowing carbon-containing gases, which through a gas-tight seal of the boxes on Escape must be prevented. For this purpose, the insert boxes with Cover and seal the joints with clay, or the hardening powder in the boxes is covered directly by fire-resistant materials, the one Form high-silica, sintering slag on the hardening powder.

Die Erfindung bezweckt nun, die bei der bisherigen Arbeitsweise unzulängliche # icherheit gegen das Entweichen von Gasen zu erhöhen und außterd!m die für die Durchwärmung der Kästun erfo- d!rliche Zeit, die oft m, hr als die MUfte des ganzfen Zeitaufwan&s betrJgt, w ;s-nflich abzukürzen und dadurch das ganze Einsatzveifahren wirtschaftlicher zu gustalten Erreicht wiid dic.s durch ein neu(s Abdeckmittel für das Härtepulver, wodurch die bisher übliche Abdichtung der Kästen durch einen mit Lehm verschmierten Deckel oder durch J eine in der Ofenhitze zusammensinternde Schlackenschicht in Wegfall kommt.The aim of the invention is to increase the inadequate safety against the escape of gases in the previous mode of operation and also to increase the time required for heating the cask, which is often more than the total time required, w; s-nflich shorten and thereby the whole Einsatzveifahren economic to gustalten Achieved dic.s wiid by a new (s covering means for the hardness powder, whereby the previously customary sealing of the boxes a zusammensinternde by a smeared with mud cover or by J in the furnace heat Slag layer comes in elimination.

Dieses Abdeckmittel besteht in einem Pulver aus fein gemahlenem Koks oder Holzkohle, das in der Glühbitze bei müglichst weitgehender Uahrung seines ursprünglichen Rauminhalts zu einer dichten und feinen Asche langsam verbrennt und auf diese Weise den Kasten gegen den Ofenraum weitgehend abschließt.This covering agent consists in a powder of finely ground coke or charcoal, which is kept in the lightbulb as close as possible to its original Volume slowly burns to a dense and fine ash and this way the box largely closes off from the furnace chamber.

Das oberflächliche Verbrennen des Abdeckpulvers ergibt vor allem aber auch den Vorteil einer zusätzlichen M ärmezufuhr, die für die Abkürzung der Durchwärmzeit wesentlich ins Gewicht fällt, ganz besonders dann, wenn gleichzeitig flache Einsatzkästen verwendet werden.The superficial burning of the covering powder results above all also the advantage of an additional supply of heat, which shortens the warm-up time is of great importance, especially when flat insert boxes are at the same time be used.

Claims (1)

PATENT-ANSPRUCII: Verfahren zum Abdecken der Einsatzkästen bei der Einsatzhärtung, dadurch gekennzeichnet, daß die offen in den Ofen einzusetzenden Kästen durch ein Pulver aus fein gemahlenem Koks oder Holzkohle abgedückt werden, Üas in der Glühhitze bei möglichst weitgehender M ahrung seines ursprünglichen Rauminhalts zu einer feinen Asche langsam verbrennt und das Einsatzpulver mit einer dichten Aschenschicht überzieht.PATENT-ANSPRUCII: Method for covering the insert boxes at the Case hardening, characterized in that the open to be used in the furnace Boxes are covered with a powder of finely ground coke or charcoal, Üas in the glowing heat with as much as possible of its original volume slowly burns to a fine ash and the insert powder with a dense Ash layer covers.
DET24601D 1920-11-04 1920-11-04 Method for covering the insert boxes Expired DE392674C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET24601D DE392674C (en) 1920-11-04 1920-11-04 Method for covering the insert boxes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET24601D DE392674C (en) 1920-11-04 1920-11-04 Method for covering the insert boxes

Publications (1)

Publication Number Publication Date
DE392674C true DE392674C (en) 1924-03-22

Family

ID=7551544

Family Applications (1)

Application Number Title Priority Date Filing Date
DET24601D Expired DE392674C (en) 1920-11-04 1920-11-04 Method for covering the insert boxes

Country Status (1)

Country Link
DE (1) DE392674C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6129001A (en) * 1995-10-02 2000-10-10 Pos-Line Ab Method and valve apparatus for controlling a reciprocatable fluid actuated power machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6129001A (en) * 1995-10-02 2000-10-10 Pos-Line Ab Method and valve apparatus for controlling a reciprocatable fluid actuated power machine

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