US2051645A - Heat treatment of metal bars - Google Patents
Heat treatment of metal bars Download PDFInfo
- Publication number
- US2051645A US2051645A US49011A US4901135A US2051645A US 2051645 A US2051645 A US 2051645A US 49011 A US49011 A US 49011A US 4901135 A US4901135 A US 4901135A US 2051645 A US2051645 A US 2051645A
- Authority
- US
- United States
- Prior art keywords
- bars
- heat treatment
- furnace
- metal bars
- quench
- 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 - Lifetime
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
Definitions
- This invention relates to heat treatment of metal bars, i. e., to heat treatment involving the use of a furnace for heating the bars to a given temperature, and a quenching apparatus, such as an oil tank, adapted to receive and to quench the bars after treatment in the furnace.
- a quenching apparatus such as an oil tank
- Apparatus of this type as constructed heretofore usually includes a furnace having a substantially horizontal hearth or bed which receives a number of bars to be treated and an associated mechanism for removing the bars simultaneously and conveying them to the quenching apparatus.
- the object of the present invention is to provide a heat treatment apparatus in which the bars may be transferred from the furnace to the quench with the minimum disturbance and in the minimum period of time.
- Fig. 1 is a vertical section
- Fig. 2 a fragmentary transverse section on the line a-a of Fig. 1.
- the heat treatment apparatus shown comprises a furnace 1 having an inclined hearth 2 having a bar-receiving surface 2 adapted to receive metal bars 3 to be heat treated.
- a quench including a tank 4 containing quenching medium and provided with a bar-supporting member including a. series of spaced rollers 5 of which the upper surfaces are disposed co-planar with the hearth 2 for reception of heated bars 3 withdrawn from the furnace I.
- Each roller 5 includes a plurality of independently rotatable roller sections 5 (Fig. 2).
- each bar travels endwise in a straight line upon the 5 rollers 5 and is supported throughout transference and quenching and subjected to an endon quench in the quenching medium.
- the rollers 5 are carried by an inclined frame 6 extending longitudinally of the tank 4, the end of the 0 frame 6 adjacent to the furnace I being hinged at ID to the tank 4 and the other end of the frame 6 being connected to a wire rope I led upwardly over a guide pulley B and downwardly to the drum of a manually operable winch 9 15 mounted on the adjacent end of the tank.
- the frame 6 is supported within the tank by slotted brackets ll attached to the sides of the tank and engaged by lateral projections I 2 on the frame 6.
- Apparatus for the heat treatment of metal bars comprising a furnace having an inclined hearth adapted to receive the bars to be treated and an associated quench comprising at least one tank adapted for reception of quenching medium and provided with bar-supporting members which are coplanar with the bar-receiving surface of said hearth so that, in the transference of the bars from said furnace to said quench, each bar travels endwise in a straight line and is supported throughout transference and quenching and subjected to an end-on quench.
Description
Aug. 18, 1936. A. P. NEWALL HEAT TREATMENT OF METAL BARS Filed Nov. 9, l935 m wm a E la J WMWMW Patented Aug. 18, 1936 UNITED STATES PATENT OFFICE Application November 9, 1935, Serial No. 49,011 In Great Britain November 7, 1934 1 Claim.
This invention relates to heat treatment of metal bars, i. e., to heat treatment involving the use of a furnace for heating the bars to a given temperature, and a quenching apparatus, such as an oil tank, adapted to receive and to quench the bars after treatment in the furnace.
Apparatus of this type as constructed heretofore usually includes a furnace having a substantially horizontal hearth or bed which receives a number of bars to be treated and an associated mechanism for removing the bars simultaneously and conveying them to the quenching apparatus.
In practice, it is found that the bars under treatment are liable to be distorted because of the movements imparted to them in the course of their transference from the furnace to the quench, and the bars are liable to be unduly scaled because of their prolonged exposure to the atmosphere.
The object of the present invention is to provide a heat treatment apparatus in which the bars may be transferred from the furnace to the quench with the minimum disturbance and in the minimum period of time.
Heat treatment apparatus constructed in accordance with the present invention is illustrated, by way-of example, in the accompanying drawing in which Fig. 1 is a vertical section, and Fig. 2 a fragmentary transverse section on the line a-a of Fig. 1.
The heat treatment apparatus shown comprises a furnace 1 having an inclined hearth 2 having a bar-receiving surface 2 adapted to receive metal bars 3 to be heat treated. Associated with the furnace I is a quench including a tank 4 containing quenching medium and provided with a bar-supporting member including a. series of spaced rollers 5 of which the upper surfaces are disposed co-planar with the hearth 2 for reception of heated bars 3 withdrawn from the furnace I. Each roller 5 includes a plurality of independently rotatable roller sections 5 (Fig. 2). In use, in the transference of the bars 3 from the furnace to the rollers 5, each bar travels endwise in a straight line upon the 5 rollers 5 and is supported throughout transference and quenching and subjected to an endon quench in the quenching medium. The rollers 5 are carried by an inclined frame 6 extending longitudinally of the tank 4, the end of the 0 frame 6 adjacent to the furnace I being hinged at ID to the tank 4 and the other end of the frame 6 being connected to a wire rope I led upwardly over a guide pulley B and downwardly to the drum of a manually operable winch 9 15 mounted on the adjacent end of the tank. The frame 6 is supported within the tank by slotted brackets ll attached to the sides of the tank and engaged by lateral projections I 2 on the frame 6. When the frame 6 is loaded with bars 3 which 20 have undergone quenching the winch 9 is operated to raise the frame 6 and the bars 3 into horizontal position, above the level of the quenching medium, to permit removal of the quenched bars from the frame.
I claim:-
Apparatus for the heat treatment of metal bars comprising a furnace having an inclined hearth adapted to receive the bars to be treated and an associated quench comprising at least one tank adapted for reception of quenching medium and provided with bar-supporting members which are coplanar with the bar-receiving surface of said hearth so that, in the transference of the bars from said furnace to said quench, each bar travels endwise in a straight line and is supported throughout transference and quenching and subjected to an end-on quench.
A. P. NEWALL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2051645X | 1934-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2051645A true US2051645A (en) | 1936-08-18 |
Family
ID=10897173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US49011A Expired - Lifetime US2051645A (en) | 1934-11-07 | 1935-11-09 | Heat treatment of metal bars |
Country Status (1)
Country | Link |
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US (1) | US2051645A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE741112C (en) * | 1940-09-12 | 1943-11-04 | Ver Oberschlesische Huettenwer | Device for introducing workpieces into a hardening bath |
US2618284A (en) * | 1946-11-22 | 1952-11-18 | United States Steel Corp | Heat-treatment of hardenable steel |
EP0784098A1 (en) * | 1996-01-09 | 1997-07-16 | DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung | Heat treatment apparatus for the solution annealing of aluminium alloy components for the aerospace industry |
-
1935
- 1935-11-09 US US49011A patent/US2051645A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE741112C (en) * | 1940-09-12 | 1943-11-04 | Ver Oberschlesische Huettenwer | Device for introducing workpieces into a hardening bath |
US2618284A (en) * | 1946-11-22 | 1952-11-18 | United States Steel Corp | Heat-treatment of hardenable steel |
EP0784098A1 (en) * | 1996-01-09 | 1997-07-16 | DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung | Heat treatment apparatus for the solution annealing of aluminium alloy components for the aerospace industry |
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