JPS59121169A - Ceramic sintering device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention 8A relates to an apparatus for sintering ceramics such as ferrite, which performs pressure heat treatment during sintering.

Configuration of conventional examples and their problems In manufacturing equipment that includes pressure heat treatment during sintering of ceramics, heat treatment and pressure treatment are usually performed independently; for example, only heat treatment is performed while the temperature is rising or falling; Pressure treatment is performed only in a predetermined temperature range. Therefore, in a so-called "single furnace" in which one pressurized heat treatment furnace is used for one pressurized heat treatment mold, the pressurizing device is not operated and is in a non-operational state during temperature rising and cooling. On the other hand, in a "tunnel furnace" that can continuously apply pressure heat treatment to multiple molds, the cart carrying the molds is subjected to pressure treatment intermittently while moving inside the heat treatment furnace. However, there are disadvantages in that only pressure treatment can be performed, and the complicated structure of the device makes it difficult to control temperature and atmosphere. Further, tunnel furnaces have the same productivity as above, but on the other hand, maintenance is difficult and there are problems such as large damage when trouble occurs.

Purpose of the Invention The present invention solves the drawbacks of conventional single furnaces and tunnel furnaces, and improves the flexibility of single furnaces, which can perform continuous pressurization and complicated temperature control, and the high productivity of tunnel furnaces. It is an object of the present invention to provide a pressurized heat treatment apparatus equipped with both.

Structure of the Invention The present invention provides a cart provided with a plurality of pressurized heat treatment molds;
It consists of a plurality of furnaces that can house these carts, and a blending device that can pressurize multiple molds at the same time. Either or both of the carts, the furnace, and the press device can be moved within the furnace. The heat-treated molded bodies are alternately inserted into a press machine and subjected to pressure treatment.

DESCRIPTION OF EMBODIMENTS FIGS. 1 and 2 show an embodiment of the sintering apparatus of the present invention in which a heat treatment furnace moves together with a cart, and FIG. 1 is a side view thereof;
FIG. 2 is a front view of the main parts.

In these figures, A and B are heat treatment equipment, each with a mobile heating furnace (υ) and a built-in trolley (3).
It is configured so that it can be moved on a pedestal (4). The trolley (3) is provided with a mold (5-) into which a molded body to be pressurized and sintered, such as a ferrite molded body (6), is placed. (2) is a plurality of pressurizing devices, and (7) is a This is a hydraulic jack in a pressure device.

The operation of this device is as follows. First, the trolley (
3) from the mobile heating furnace (1) and molded body (6).
A predetermined number of molds (5, ?) are placed on the trolley (3).In that state, the trolley is inserted into the fully mobile heating furnace (1),
Start heating up. When the predetermined pressure treatment temperature is reached, the heat treatment apparatus A' is moved along the gantry <41 to the position of the plurality of pressurization apparatuses (21), and pressurization is performed by the pressurization apparatuses (2). When the heat treatment device A is completed, it is returned to its original position and the temperature is lowered.In the darkness, heat treatment device B, which was set in the same way as A, has reached the pressure treatment temperature, so it is heated in the same way as A. It moves to the position of the pressurizing device (2) and pressurizes it.This operation is repeated alternately.

An example of a pattern of pressure heat treatment using the above-mentioned sintering apparatus is shown in FIG. In the figure, the horizontal axis is time, the vertical axis is temperature, and the pressurization start and end times are indicated by downward arrows and upward arrows, respectively. In addition, heat treatment furnaces for A and Bu are shown.

4 and 5 are a side view and a front view of another embodiment of the present invention in which the pressurizing device is moved.

In these figures, (a), (b), and (c) are respectively heat treatment devices, each of which has a heating furnace αD and a truck CI3 (13 stores the molded body (6) and pressurizes it. A plurality of molds for heat treatment are provided, and the structure is such that only the trolley carrying the mold monk is pulled out horizontally along a pedestal extending laterally.@ is a mobile type.・A plurality of pressurizing devices equipped with pressurizing jacks α force are movable along a platform α4IVC with rails on a trolley Qg.

In this example, first, the cart o3 is pulled out in any direction along the pedestal Qf3+, and a predetermined number of molds αθ into which the molded bodies (6) are placed are drawn out.
is set on chalk σ3, and placed in the heating furnace αD of each heat treatment apparatus (al, (b), and (c)) to start heating. This operation is similar to the embodiment shown in FIGS. Next, each of the heat treatment devices (a), (b), and (c) starts to raise the temperature, and when the temperature reaches the predetermined pressure treatment temperature, the heat treatment device (e.g. Move the pressure device 012+ to the position a) and perform the pressure treatment.
When the Calo pressure of a) is completed, the pressurizing device (2) moves to the position of the heat treatment device (for example, b) where the temperature of the next pressurizing treatment has been reached, and pressurization starts. °Sometimes you can repeat this kind of action one after another.

The pressure and heat treatment turns in this case are shown in FIG.

In the figure, the downward arrow indicates the time when pressurization starts, and the upward arrow indicates the pressurization start time. As can be seen from the figure, this method is advantageous when the cooling time is long. Further, in this embodiment, it is also possible to perform complicated heat treatment turns for each furnace. On the other hand, even if one heating furnace breaks down, the other heating furnaces can be operated, so if a single failure occurs like in a tunnel furnace, the operation of the entire equipment must be stopped. Therefore, when a problem occurs, the damage will not be large. Also, maintenance is much easier compared to tunnel furnaces.

Effects of the Invention As described above, the ceramic sintering apparatus of the present invention is capable of simultaneously performing heat treatment and pressure treatment of a plurality of sintered bodies. Flexibility in pressurization, complex temperature control, atmosphere control, ease of maintenance, and minimal damage when trouble occurs, high productivity of tunnel furnaces, and high operating rate of pressurization equipment. This combination of features makes it extremely effective in practice.

[Brief explanation of the drawing]

Fig. 1 is a side view of one embodiment of the sintering apparatus of the present invention, Fig. 2 is a front view of its main parts, Fig. 1 is a diagram showing an example of the pressure heat treatment pattern, and Fig. 4 is FIG. 5 is a side view of another embodiment of the present invention, FIG. 5 is a front view of the main part thereof, and FIG. 6 is a diagram showing an example of the pressure heat treatment pattern. Ar B + a + l), c... Heat treatment device, (1), En... Heating furnace, (2I, Shout... Pressure device, (3), (2), α9... Trolley, (4), α-tsuru α81・-・frame, (5), α-・・type, (6)・-
・Molded body, (7), α7j... Jack. Name of agent: Patent attorney Etsuji Yoshizaki

Claims (1)

[Claims] A cart provided with a plurality of pressurized heat treatment molds, a plurality of heating furnaces in which the carts can be housed, and a pressurizing device capable of pressurizing the plurality of molds at the same time. A ceramic firing method characterized in that one or both of the molds and the pressurizing device are movable, and a plurality of heating furnaces and carts are alternately inserted into the pressurizing device to pressurize the plurality of molds at the same time. tying device.