CN219324724U - Vacuum isothermal forging blank heating furnace - Google Patents

Abstract

The utility model discloses a vacuum isothermal forging blank heating furnace, which comprises a blank placing chamber and a blank heating chamber which are connected into a whole; the blank placing chamber is mainly formed by enclosing a furnace bottom plate, a furnace door, a vacuum gate and a lower furnace shell, a tray for placing blanks is arranged in the middle of the interior of the blank placing chamber, the tray is supported on the furnace bottom plate by a bracket, and a three-jaw chuck for clamping and positioning the blanks is arranged on the tray; a tray for supporting the bottom of the blank is assembled in a central through hole of the tray, a lifting ejector rod is installed at the bottom of the tray, and the ejector rod penetrates through the bottom plate of the furnace and is in sealing fit with the bottom plate of the furnace; the blank heating chamber is surrounded by an upper furnace shell and a top cover, and the top cover is connected with the upper furnace shell in a sealing way; a support body is arranged at the bottom of the inner wall of the upper furnace shell in the blank heating chamber, a heat preservation cover is arranged on the support body along the inner wall of the upper furnace shell, and a graphite heating element is arranged on the support body along the inner wall of the heat preservation cover. The method is mainly used for heating the vacuum isothermal forging blank under the vacuum condition.

Description

Vacuum isothermal forging blank heating furnace

Technical Field

The utility model relates to a heating furnace, in particular to a vacuum isothermal forging stock heating furnace.

Background

In performing the vacuum isothermal forging, the billet for forging needs to be heated under vacuum conditions and the isothermal forging is performed under vacuum conditions. At present, the heating furnace and the vacuum forging chamber are separated, namely, the blank is required to be taken out from the furnace after being heated in the heating furnace and then is reloaded into the vacuum forging chamber for forging.

Chinese patent specification CN214720230U published in 2021, 11 and 16 discloses a novel forging heating device. The heating device comprises a heating furnace seat, a forging heating chamber is arranged in the heating furnace seat, an annular electric heater is arranged at the bottom of the forging heating chamber, a forging furnace inner clamping piece capable of rotating along the circumferential direction is arranged in the forging heating chamber, a forging anti-falling bottom supporting component capable of reciprocating rectilinear motion along the horizontal direction is arranged below the forging furnace inner clamping piece, the forging anti-falling bottom supporting component is positioned between the annular electric heater and the forging furnace inner clamping piece, a furnace seat cover capable of reciprocating rectilinear motion along one end close to or far away from the heating furnace seat is arranged above the heating furnace seat, a picking and placing clamp piece is arranged in the furnace seat cover, and the picking and placing clamp piece corresponds to the position of the forging furnace inner clamping piece.

The furnace is provided with only one furnace chamber, namely a forging heating chamber, when the forging blank is heated, the annular electric heater is uniformly arranged at the bottom of the forging heating chamber for heating the forging, a forging furnace inner clamping piece capable of rotating along the circumferential direction is arranged, the forging furnace inner clamping piece drives the forging to rotate along the circumferential direction in the heating process, meanwhile, the annular electric heater is impacted after the forging is accidentally dropped in the rotating heating process, and a forging anti-drop bottom supporting assembly is further arranged. The structure is complex, the operation is very inconvenient, and the process route of directly carrying out vacuum isothermal forging on the blank after heating cannot be realized.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a vacuum isothermal forging blank heating furnace with two furnace chambers, which is simple and convenient to operate, high in heating efficiency, short in heating time and uniform in heating.

In order to solve the technical problems, the vacuum isothermal forging stock heating furnace comprises a stock placing chamber and a stock heating chamber, wherein the stock placing chamber and the stock heating chamber are communicated into a whole;

the blank placing chamber is mainly formed by enclosing a furnace bottom plate, a furnace door, a vacuum gate and a lower furnace shell, and the top of the blank placing chamber is communicated with the blank heating chamber; the furnace door is in sealing connection with the blank placing chamber, and the vacuum gate is respectively in sealing connection with the blank placing chamber and the vacuum forging chamber; a tray for placing blanks is arranged in the middle of the interior of the blank placing chamber and is supported on the furnace bottom plate by a bracket; a tray for supporting the bottom of the blank is assembled in a central through hole of the tray, a lifting ejector rod is installed at the bottom of the tray, and the ejector rod penetrates through the bottom plate of the furnace and is in sealing fit with the bottom plate of the furnace;

the blank heating chamber is surrounded by an upper furnace shell and a top cover, and the top cover is connected with the upper furnace shell in a sealing way; a support body is arranged at the bottom of the inner wall of the upper furnace shell in the blank heating chamber, a heat preservation cover is arranged on the support body along the inner wall of the upper furnace shell, and a graphite heating element is arranged on the support body along the inner wall of the heat preservation cover.

As a preferable configuration of the present utility model, a three-jaw chuck for holding and positioning a billet is mounted on the tray in the billet holding chamber.

Compared with the prior art, the utility model has the following beneficial effects:

according to the vacuum isothermal forging blank heating furnace, the blank placing chamber and the blank heating chamber are arranged, the blank placing chamber is used for charging, clamping and positioning of the blank, the blank is sent to the blank heating chamber through the lifting device for heating, and the blank is directly sent to the vacuum forging chamber for forging under the condition of no breaking vacuum after being heated to a temperature, so that a process route of directly carrying out vacuum isothermal forging on the blank after charging and heating is opened, the blank is always in a vacuum condition from charging and heating to forging forming, the blank is prevented from being taken out from the furnace and reloaded into the vacuum forging chamber for rapid cooling, surface oxidation and the like, and high-quality forgings are facilitated to be obtained.

The blank heating chamber improves the blank heating efficiency, shortens the blank heating time and can enable the blank heating to be more uniform by arranging the heat preservation cover and adopting the graphite heating element (the graphite heating element can be prevented from volatilizing under the vacuum condition).

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

Fig. 1 is a structural view of a vacuum isothermal forging billet heating furnace.

Detailed Description

As shown in fig. 1, the vacuum isothermal forging stock heating furnace according to the present utility model is mainly composed of a stock placement chamber 10 and a stock heating chamber 20, and the stock placement chamber 10 and the stock heating chamber are integrally connected.

The blank placing chamber 10 is mainly surrounded by a furnace bottom plate 11, a furnace door 12, a vacuum gate 13 and a lower furnace shell (not shown in the figure), and the top of the blank placing chamber is communicated with a blank heating chamber 20; the furnace door 12 is in sealing connection with the blank placing chamber 10 and is mainly used for loading or taking out the blank 30 for isothermal forging, and the vacuum gate 13 is respectively in sealing connection with the blank placing chamber 10 and the vacuum forging chamber 19; a tray 14 for placing the blanks 30 is arranged in the middle of the interior of the blank placing chamber 10, the tray 14 is supported on the bottom plate 11 by a bracket 15, and a three-jaw chuck 16 for clamping and positioning the blanks 30 is arranged on the tray 14; a tray 17 for supporting the bottom of the blank 30 is assembled in the central through hole of the tray 14, a lifting ejector rod 18 is assembled at the bottom of the tray 17, and the ejector rod 18 penetrates through the furnace bottom plate 11 and is in sealing fit with the furnace bottom plate 11.

Blank heating chamber 20 is enclosed by an upper furnace shell 21 and a top cover 22, top cover 22 being sealingly connected to upper furnace shell 21 for mounting mainly the components within blank heating chamber 20. A support body 25 is mounted along the bottom of the inner wall of the upper furnace shell 21 in the blank heating chamber 20, a heat retaining cover 23 is mounted along the inner wall of the upper furnace shell 21 on the support body 25, and a graphite heating element 24 is mounted along the inner wall of the heat retaining cover 23 on the support body 25.

When the blank 30 is heated by the vacuum isothermal forging blank heating furnace, the furnace door 12 is opened, the blank 30 is clamped by a mechanical hand and placed in the middle position of the tray 14 in the blank placing chamber 10, and then the blank 30 is clamped by the three-jaw chuck 16 to be centered so that the center of the blank 30 is concentric with the center of the tray 17 at the bottom of the blank; closing the furnace door 12, vacuumizing the heating furnace to reach the vacuum degree, loosening the three-jaw chuck 16, lifting the ejector rod 18 to the blank heating chamber 20 against the tray 17 and the blank 30 on the tray 17, completely placing the blank 30 in the inner cavity of the graphite heating element 24, heating the blank 30 through the graphite heating element 24, after the blank 30 is heated to the temperature, lifting the ejector rod 18 to enable the blank 30 to return to the original position on the tray 14, opening the vacuum gate 13, and feeding the blank 30 into the vacuum isothermal forging chamber through a feeding manipulator (not shown in the figure) in the blank placing chamber 10 for forging.

Claims (2)

1. A vacuum isothermal forging blank heating furnace, comprising a blank heating chamber, characterized in that: the device also comprises a blank placing chamber, wherein the blank placing chamber and the blank heating chamber are communicated into a whole;

the blank placing chamber is mainly formed by enclosing a furnace bottom plate, a furnace door, a vacuum gate and a lower furnace shell, and the top of the blank placing chamber is communicated with the blank heating chamber; the furnace door is in sealing connection with the blank placing chamber, and the vacuum gate is respectively in sealing connection with the blank placing chamber and the vacuum forging chamber; a tray for placing blanks is arranged in the middle of the interior of the blank placing chamber and is supported on the furnace bottom plate by a bracket; a tray for supporting the bottom of the blank is assembled in a central through hole of the tray, a lifting ejector rod is installed at the bottom of the tray, and the ejector rod penetrates through the bottom plate of the furnace and is in sealing fit with the bottom plate of the furnace;

the blank heating chamber is surrounded by an upper furnace shell and a top cover, and the top cover is connected with the upper furnace shell in a sealing way; a support body is arranged at the bottom of the inner wall of the upper furnace shell in the blank heating chamber, a heat preservation cover is arranged on the support body along the inner wall of the upper furnace shell, and a graphite heating element is arranged on the support body along the inner wall of the heat preservation cover.

2. A vacuum isothermal forging stock heating furnace according to claim 1, wherein a three jaw chuck for holding and positioning a blank is mounted on a tray in the stock placement chamber.

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