DE848203C - Oven for workpieces to be heated and accelerated to be cooled - Google Patents

Oven for workpieces to be heated and accelerated to be cooled

Info

Publication number
DE848203C
DE848203C DES9A DES0000009A DE848203C DE 848203 C DE848203 C DE 848203C DE S9 A DES9 A DE S9A DE S0000009 A DES0000009 A DE S0000009A DE 848203 C DE848203 C DE 848203C
Authority
DE
Germany
Prior art keywords
oven
heated
accelerated
cooled
workpieces
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
DES9A
Other languages
German (de)
Inventor
Walter Sellerbeck
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DES9A priority Critical patent/DE848203C/en
Application granted granted Critical
Publication of DE848203C publication Critical patent/DE848203C/en
Expired legal-status Critical Current

Links

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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum

Description

Ofen für zu erwärmende und regelbar beschleunigt abzukühlende Werkstücke 1)as Vergüten von Werkstücken aus Eisen und Stahl, insbesondere legierten Stählen, erfolgt durch 1#,rw@irmen ins Glühofen, durch Abkühlen in Wasser, i )il oder Luft und durch Anlassen. Das Abkühlen durch Luft kann z. B. bei größeren Gußstückeii durch Einblasen von Luft in den Ofen selbst oder in vorgelagerte :@1>schrecl;haul>en vorgenommen werden. Dieses Verfahren hat Nachteile, die darin bestehen, daß bei den) hisher geübten einseitigen I'.inlilasen der Luft <las Gut nicht gleichmäßig ht- strahlt wird und demzufolge ungleichmäßig erkal- tet. .\n den zur Hinblasstelle gerichteten Teileis des ( Iutcs tritt inuner cine stärkere Kühlung ein als an seinen rück@@:irts gelagerten Teileis. Dieser Nach- teil soll dadurch behoben werden, daß die Luftzufuhr nicht durch Einblasen erfolgt, sondern durch Absaugen. Erfindungsgemäß ist der Ofen finit einem N iederdruckventilator mit verhältnismäßig hoher Ansaugleistung versehen, der an mir einer Stelle des Oferis die Warmluft absaugt. Der Ofen hat an allen Seiten, im Herd und im Gewölbe eine größere Anzahl von verschließbaren kleinen Lufteintrittsöffnungen, durch die nach Anstellen des Ventilators Kaltluft konzentriert auf das Glühgut einblast. Die Gußstücke werden auf diese Art und Weise von allen Seiten so bestrahlt, daß sie gleichmäßig abkühlen. Durch Änderung der Offnungen der I?iiiströmschlitze kann die Gleiclirn:illi(#k-eit der Abküh-I Jung geregelt werden. Durch diese Vorrichtung ist ferner eine viel intensivere Bestrahlung des Glühgutes möglich, da die Luftzirkulation erheblich gesteigert werden kann.Oven for workpieces to be heated and controlled to be accelerated to be cooled 1) as quenching and tempering of workpieces made of iron and Steel, especially alloy steels, is made through 1 #, rw @ irmen into the annealing furnace, by cooling in water, i) il or air and by tempering. The cooling down by air z. B. with larger Gußstückeii by blowing air into the furnace itself or in upstream: @ 1>schrecl;haul> en made will. This method has disadvantages in it exist that with the) previously practiced one-sided I'.inlilasen the air <read good not evenly ht- radiates and therefore unevenly calculates tet. . \ n the part of the (Iutcs occurs in a stronger cooling than at first his back @@: irts stored part of ice. This post part is to be remedied by the fact that the air is not supplied by blowing in, but by suction. According to the invention, the furnace is finitely provided with a low-pressure fan with a relatively high suction power, which extracts the warm air at one point on the furnace. The furnace has a large number of closable small air inlet openings on all sides, in the hearth and in the vault, through which cold air is blown in concentrated onto the material to be annealed after the fan has been switched on. The castings are irradiated in this way from all sides so that they cool evenly. By changing the openings of the flow slits, the equilibrium can be regulated. This device also enables a much more intensive irradiation of the material to be annealed, since the air circulation can be increased considerably.

Ein weiterer Vorteil ist die Schonung der Ofennusmauerung, die dadurch eintritt, daß die kalte Luft sich erst an dem Ofeninhalt erwärmt. Die Ausmauerung macht den Temperatursturz gegenüber dem bisherigen Verfahren nur in geringerem Maße mit. Diese in der Ofenausmauerung bleibende Wärmereserve kann gegebenenfalls für ein nachfolgendes Anlassen ausgenutzt werden, da nach Beendigung des Abblasvorgangs ein allmählicher Temperaturanstieg im Ofen von der Ausmauerung her stattfindet.Another advantage is the protection of the furnace wall occurs that the cold air is heated only at the furnace contents. The brick lining makes the temperature drop only to a lesser extent compared to the previous method with. This heat reserve remaining in the furnace lining can be used for a subsequent starting can be exploited, since after the end of the blow-off process there is a gradual increase in temperature in the furnace from the brick lining.

Claims (1)

PATEN TANSPRIiCII: Ofen für zu erwärmende und regelbar 1>j#-schleunigt abzukühlende Werkstücke aus Eisen und Stahl, gekennzeichnet durch allseitig im Herd und in der Decke angeordnete zahlreiche kleine verschließbare öffnungen und einen starken Absaugventilator, der, an dem Ofen angeschlossen, den Ofen unter starken Vaterdruck setzt. PATEN TANSPRIiCII: Oven for workpieces made of iron and steel to be heated and regulated 1> j # -accelerated to be cooled, characterized by numerous small closable openings arranged on all sides in the oven and in the ceiling and a powerful exhaust fan which, connected to the oven, underneath the oven sets strong paternal pressure.
DES9A 1949-10-04 1949-10-04 Oven for workpieces to be heated and accelerated to be cooled Expired DE848203C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES9A DE848203C (en) 1949-10-04 1949-10-04 Oven for workpieces to be heated and accelerated to be cooled

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES9A DE848203C (en) 1949-10-04 1949-10-04 Oven for workpieces to be heated and accelerated to be cooled

Publications (1)

Publication Number Publication Date
DE848203C true DE848203C (en) 1952-09-01

Family

ID=7468538

Family Applications (1)

Application Number Title Priority Date Filing Date
DES9A Expired DE848203C (en) 1949-10-04 1949-10-04 Oven for workpieces to be heated and accelerated to be cooled

Country Status (1)

Country Link
DE (1) DE848203C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281249A1 (en) * 1987-03-06 1988-09-07 William H. Moore Improved method of heat treating ferrous metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281249A1 (en) * 1987-03-06 1988-09-07 William H. Moore Improved method of heat treating ferrous metals

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