JP6686716B2 - Heat treatment equipment - Google Patents

Description

  The present invention relates to a heat treatment facility that can perform heat treatment such as quenching continuously on a plurality of works, can be installed in a relatively narrow space, and is relatively inexpensive.

  For example, in order to carry out carbonitriding and quenching treatment on an article to be treated, a plurality of carburizing chambers and a single quenching chamber are installed in parallel with each other along a straight rail, and run on the rail and keep warm. A transport unit having both a delivery chamber and a plurality of the carburizing chambers sequentially subjected to the first carburizing and the second carburizing is loaded into the heat-retaining chamber through the delivering chamber. After carrying out the nitriding treatment, the transport unit including the heat retaining chamber is run on the rails, and is charged into the quenching chamber through the transfer chamber to perform oil quenching, and then the rails in the quenching chamber. Heat treatment equipment that allows the carbonitriding and quenching processed products to be sent to the extraction (export) table from the airtight door on the opposite side. It has been proposed (e.g., see Patent Document 1).

However, in the heat treatment facility as described above, since the extraction table for carrying out the quenched object to the next line is arranged so as to extend at a right angle to the opposite side of the rail across the hardening chamber. The space required for the entire heat treatment facility becomes large.
Further, since a pit surrounding the oil tank is required around the oil tank in the quenching chamber in which oil quenching is performed, the installation positions of the attached control panel, vacuum pump, etc. are distant. There is also a problem that it requires a space for the entire equipment and causes a high cost.

JP-A-2015-17790 (pages 1 to 21, FIGS. 1 to 8)

  The present invention solves the problems described in the background art, can perform heat treatment such as quenching continuously on a plurality of works, and can be installed in a relatively narrow space, and ensure a relatively inexpensive heat treatment facility. The challenge is to provide.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the present invention arranges a plurality of heating chambers and a quenching chamber along a first traveling path, and provides a door for loading and unloading the quenching chamber only on the side of the first traveling path. The second running path for carrying out the hardened work is arranged between the first running path and the quenching chamber.
That is, the heat treatment equipment of the present invention (Claim 1) is a heat treatment equipment for continuously quenching a plurality of works, and is a carry-in conveyor and a carry-out conveyor for the work which are parallel to each other, and on the carry-in conveyor. A heat-retaining chamber that receives the workpiece conveyed inside through a transfer chamber and travels along a first traveling path along a direction intersecting the longitudinal direction of the carry-in conveyor and the carry-out conveyor; and the first travel path. A plurality of heating chambers that are disposed on at least one end side of the heat retaining chamber and that receive the work from the heat retaining chamber via the transfer chamber, and are disposed on at least the other end side of the first traveling path. The work heated in any one of the heating chambers is again received inside from the heat-retaining chamber via the transfer chamber. And a quenching chamber that receives the quench inside and quenches, and receives the workpiece that has been quenched in the quenching chamber, and is located between the carry-in conveyor and the carry-out conveyor and the first traveling path. An airtight door used for inserting and discharging the work in the quenching chamber has a single doorway opening on the side of the first traveling path and the second traveling path. Along with opening and closing, the carry-out carriage is equipped with a plurality of laterally slidable tables that transfer the quenched work onto the carry-out conveyor.

According to the heat treatment equipment as described above, the following effects (1) to (3) can be obtained.
(1) The second traveling path on which the unloading carriage that delivers the workpiece quenched in the quenching chamber onto the unloading conveyor travels is between the importing conveyor and the unloading conveyor and the first traveling path. Since it is located, the space of the whole heat treatment equipment can be made relatively compact.
(2) Compared with the entire heat treatment equipment, it is possible to carry out the work after quenching only by attaching the unloading carriage and the second running path, and the conventional long conveyor for unloading (extracting) is not required. It can be installed at a low cost.
(3) Since only one airtight door for inserting and discharging the work in the quenching chamber is provided only on the first traveling road side and the second traveling road side, maintenance due to replacement of packing used for the door is required. The cost can be reduced.

The work (object to be treated) is a steel product made of various steel types and requiring heat treatment including quenching. A relatively large work is held alone on a heat-resistant pallet (rack), while a relatively small work is hardened by being held in a plurality of heat-resistant racks one by one. Heat treatment is applied.
The carry-in / carry-out conveyor is, for example, a roller conveyor or a heat-resistant mesh (belt) conveyor.
Further, the transfer chamber has a plurality of tables, which are cylindrical portions connected to the heating chamber side of the heat retaining chamber and are horizontally slidable.
Further, the heat retaining chamber has a built-in greenhouse which is surrounded by a heat insulating material, and is provided with a heater for heating the inside of the greenhouse, so that the work is kept warm while being preheated.
Further, it is desirable that the carry-in / carry-out conveyor and the first and second traveling paths have their longitudinal directions orthogonal to each other in order to save space in the entire heat treatment equipment.

The heating chamber heats the work to a temperature range in which it can be quenched.
Further, the first traveling path and the second traveling path are also set (laid) parallel to each other in order to save space in the entire heat treatment equipment.
In addition to the rails (a pair of rails), the first traveling path and the second traveling path are guide grooves having a concave cross section provided along the floor, and the self-propelled heat retaining chamber is provided in the guide grooves. , Or a form in which a guide pin or a guide roller hanging from a self-propelled carrier is inserted, or a guide having a convex cross section is laid on the floor, and both sides of the guide are sandwiched by a pair of guide rollers. Is also good. Alternatively, a guide strip made of an iron plate buried flush with the floor may be used, and the heat insulation chamber and the transport carriage may be automatically run while magnetically guiding along the guide strip.

Further, the present invention includes a heat treatment facility (claim 2) in which the quenching chamber is for subjecting the work to oil quenching or water quenching, and is surrounded by pits in a plan view. Be done.
According to this, even if the quenching chamber is surrounded by a pit, the effect (1) can make the entire equipment compact, so that the installation positions of the attached control panel and vacuum pump can be relatively close to each other. Yes (effect (4)).
The pit surrounding the quenching chamber may be formed at a position lower than the floor, or may be provided inside an upright jetty surrounding the quenching chamber.

Further, the present invention also includes a heat treatment facility (claim 3) in which the plurality of heating chambers are capable of carburizing the work.
According to this, the work can be heated to a temperature range where quenching can be performed, and at the same time, the surface layer of the work can be hardened (effect (5)).
By introducing the carburizing gas into the heating chamber, the work can be carburized.
It is also possible to introduce nitrogen gas into the heat retaining chamber or the heating chamber and subject the workpiece to only carburizing treatment or carbonitriding treatment.

Further, in the present invention, the carry-out carriage is equipped with a plurality of slidable telescopic tables on the upper portion thereof along a horizontal direction orthogonal to the second traveling path. 4) is also included.
According to this, the unloading carriage that travels along the second traveling path is quenched on the unloading conveyor by sliding the plurality of tables mounted on the upper portion in the horizontal direction. Further, since the work can be transferred smoothly, the effects (1) and (2) can be surely exhibited.

In addition, in the present invention, the plurality of heating chambers are arranged on one end side of the first traveling path, and the quenching chamber is arranged on the other end side of the first traveling path. Heat treatment equipment (claim 5) is also included.
According to this, a plurality of heating chambers are arranged at one end side of the first traveling path and at least one quenching chamber is arranged at the other end side of the first traveling path with the loading / unloading conveyor interposed therebetween. As a result, since the entire heat treatment equipment can be housed in a compact and compact manner, it is possible to more reliably achieve the effect (1).

In addition, in addition to the above, in the present invention, the plurality of heating chambers are respectively arranged on both end sides of the first traveling path, and the quenching chamber includes the carry-in conveyor and the carry-out conveyor, and the first travel. A heat treatment facility may be included, which is disposed between a plurality of heating chambers disposed on one end side of the passage, and two of the heat retaining chambers individually travel along the first traveling passage.
In this case, in addition to the above effects (1) to (5), when there are a relatively large number of workpieces to be quenched, or different types of quenching or heat treatment of a plurality of patterns including the quenching are efficiently performed for a large number of workpieces. It can be applied well.

In addition, in addition, the present invention may include a heat treatment facility in which a tempering furnace for tempering the work is arranged on the downstream side of the carry-out conveyor.
In this case, in addition to the effects (1) to (5), it becomes possible to sequentially perform tempering treatment on the plurality of quenched works.

Further, in addition to the above, according to the present invention, the first traveling path and the second traveling path are respectively dedicated and include two sets of rails parallel to each other, and the heat insulation chamber and the transport carriage are dedicated to the exclusive use. Heat treatment equipment may also be included, with wheels for traveling on each of the rails.
In this case, in addition to the effects (3) to (5), for example, a pair of relatively wide gauges (one set) may be provided on the first traveling path on which the heat retaining chamber including the transfer chamber having a relatively large weight and a large size travels. ), And the second traveling path on which the relatively small and small discharge carriage travels is constituted by a pair of rails (one set) having a relatively narrow gauge. , (2) can be played reliably.

The top view which shows the heat processing equipment of one form by this invention. 1A is a vertical sectional view taken along the line AA in FIG. 1, and FIG. 1B is a vertical sectional view taken along the line BB in FIG. 1. The top view which shows the effect | action of the said heat processing equipment. The top view which shows the effect | action of the said heat processing equipment following FIG. The top view which shows the heat treatment equipment which is an application form of the said heat treatment equipment. The top view which shows the heat processing equipment of a different applied form.

Hereinafter, modes for carrying out the present invention will be described.
FIG. 1 is a plan view showing a heat treatment facility 1a according to one embodiment of the present invention.
As shown in FIG. 1, the heat treatment facility 1a includes a carry-in conveyor C1 and a carry-out conveyor C2 that are parallel to each other and sequentially feed a plurality of works W, and along a direction orthogonal to the longitudinal direction of the conveyors C1 and C2. A first traveling path R1 composed of a pair of wide-gauge (one pair) rails r laid, one heat insulation chamber 4 traveling along the first traveling path R1, and the conveyors C1 and C2 sandwiched therebetween. , Two (plural) heating chambers 14 arranged on one end side (upper end side in the figure) of the first traveling path R1 and the other end side (lower end in the figure) of the first traveling path R1. Side) and a pair of narrow gauges (one set) of rails r laid between the quenching chamber 20 and the conveyors C1 and C2 and the first traveling path R1. On the second traveling road R2 and on the second traveling road R2 It includes a single unloading carriage 26 running along the.
The first traveling path R1 and the second traveling path R2 are laid in parallel with each other.

As shown in FIG. 1, on the left side of the carry-in conveyor C1 and the carry-out conveyor C2 in the figure, an introducing conveyor c1 and an deriving conveyor c2 are arranged linearly along a direction orthogonal to the longitudinal direction thereof. ing. A cleaning chamber 2 is installed between the introduction conveyor c1 and the delivery conveyor c2 and the carry-in conveyor C1 and the carry-out conveyor C2.
In the cleaning chamber 2, the dust and the like adhering to the surface of the work W sequentially fed on the introduction conveyor c1 is removed, and is sent out on the carry-in conveyor C1 as shown by an arrow in FIG. Contamination such as oil and fat adhering to the surface of the work W sequentially fed on the conveyor C2 is removed, and the work W is sent to the lead-out conveyor c2 side.
Further, a tempering furnace 3 is installed between the cleaning chamber 2 and the outlet conveyor c2 so that the quenched work W is sequentially subjected to a required tempering process.

As shown in FIG. 2A, the heat-retaining chamber 4 includes a cylindrical main body 5 whose one end is closed by a disk-shaped end plate (end plate) 6, and a left side of the main body 5 in the figure. And a delivery chamber 12 that is concentrically connected to the delivery chamber 12. The main body 5 is installed on the dolly 7, and a pair of front and rear wheels 8 provided on the lower side of the dolly 7 are rolled on the rails r of the first traveling path R1 so that the main body 5 and the transfer chamber 12 are provided. The vehicle travels along the first traveling path R1.
Inside the main body 5, a rectangular parallelepiped heat insulating chamber 9 is provided, and a plurality of heaters h are arranged along the side wall, ceiling and floor of the heat insulating chamber 9. The door d of the heat insulating chamber 9 is connected to an airtight door 10 that opens and closes between the main body 5 and the delivery chamber 12 so as to be shut off. The airtight door 10 can be opened and closed between the inside of the main body 5 and the delivery chamber 12 by a piston rod (not shown) of an air cylinder 11, for example. A pipe (not shown) for connecting the inside of the heat insulating chamber 9 to a vacuum, a reduced pressure atmosphere, or a nitrogen gas atmosphere is connected to the heat insulating chamber 9.
On the other hand, on the floor inside the delivery chamber 12, three telescopic type tables 13 (plurality) which are slidable in the left-right direction in the figure are arranged in a laminated manner to heat-insulate the work W. It can be taken in and out of the chamber 9 and can be delivered to and from the heating chamber 14.

Further, as shown in FIG. 1, the heating chamber 14 is disposed on the upper side (one side) of the first traveling path R1 with the carry-in conveyor C1 and the carry-out conveyor C2 interposed therebetween. As shown on the left side of FIG. 2A, the heating chamber 14 includes a cylindrical main body 15 whose one end side is closed by an end plate 16 similar to the above, and a rectangular parallelepiped heat insulating chamber provided in the main body 15. 17, a plurality of heaters h arranged in the heat insulating chamber 17 in the same manner as described above, a fan 18 that stirs the atmosphere in the heat insulating chamber 17 and a motor 19 that drives the fan 18. The opening on the other end side of the main body 15 can be opened and closed by the airtight door 10 similar to the above, and the door d of the heat insulating chamber 17 is connected to the airtight door 10.
The heat insulating chamber 17 may be connected to a pipe (not shown) for introducing and discharging a carburizing gas for performing a carburizing treatment or a carbonitriding treatment, a carbonitriding gas, or the like.
Further, the main body 15 is supported on the floor F via a plurality of columns S.

Further, as shown in FIG. 1, the quenching chamber 20 is arranged on the lower side (the other side) of the first traveling path R1 with the carry-in conveyor C1 and the carry-out conveyor C2 interposed therebetween. As shown on the left side of FIG. 2B, the quenching chamber 20 includes four side walls 21 standing upright from the bottom of a pit P formed by digging the floor F, and a ceiling plate 22 installed between the upper ends of these. , And the same airtight door 10 that opens and closes the opening facing the side wall 21 on the second traveling path R2 side. The pit P side in the quenching chamber 20 is filled with oil 23 for oil quenching, and the ceiling plate 22 side is a frame-shaped support frame for immersing the work W to be quenched in the oil 23. 24 is arranged so that it can be moved up and down by an elevating device 25.
Note that water for water quenching may be filled instead of the oil 23. Further, the bottom surface of the pit P may be at the same level as the floor F and surrounded on all four sides by jetty (not shown), and the side walls 21 of the quenching chamber 20 may be erected on the bottom surface of the pit P. .

  In addition, as shown in the central portion of FIG. 2 (B), the carry-out carriage 26 includes a pair of rails r in the second traveling path R2 sandwiched between the quenching chamber 20 and the first traveling path R1. Since the work W is transferred between the bogie 27 having the wheels 28 rolling on it and the upper part of the bogie 27, and the quenching chamber 20, it can be slid in the same telescope manner as the above. Three (plural) tables 29 are provided.

Hereinafter, a method of using the heat treatment equipment 1a will be described with reference to FIGS. 1, 3 and 4.
It is assumed that a plurality of works W to be quenched and tempered are individually set in advance on a heat-resistant pallet or a predetermined number of heat-resistant racks in a plurality of stages.
First, as shown in FIG. 1, a plurality (groups) of works W are sequentially fed into the cleaning chamber 2 from above the introduction conveyor c1 to remove dust and oil and fat adhering to the surface by high pressure air or high pressure cleaning liquid. To be done. The work W that has undergone such cleaning is sequentially fed onto the carry-in conveyor C1.
Next, as shown in FIG. 3, the work W located on the most distal side of the carry-in conveyor C1 is transferred from the transfer chamber 12 into the main body 5 of the heat-retaining chamber 4 via the telescope type table 13 and the heat insulation is performed. Charge into chamber 9. At this time, the door d of the heat insulation chamber 9 is opened and closed together with the airtight door 10, and the airtight door 10 can connect and disconnect the transfer chamber 12 and the heat insulation chamber 9.

The work W loaded in the heat insulating chamber 9 is heated to a required temperature range (for example, about 850 ° C.) by the plurality of heats h and is held for a predetermined time. It should be noted that nitrogen gas may be introduced into the heat insulation chamber 9 to subject the surface layer of the work W to nitriding treatment.
Next, the heat-retaining chamber 4 travels on the rail r of the first traveling path R1 toward the upper side in the figure as shown by the arrow in FIG. 4, and the opening of the heating chamber 14 located on the upper side in the figure. Then, the transfer chamber 12 is stopped at a position where it communicates. In such a state, the door d of the heat insulation chamber 9 is opened together with the airtight door 10, and the heated work W is transferred to the heating chamber 14 through the plurality of tables 13 in the delivery chamber 12. It is loaded into the heat insulating chamber 17 located in the main body 15. At this time, the door d of the heat insulation chamber 17 is opened and closed together with the airtight door 10, and the airtight door 10 connects and disconnects the transfer chamber 12 and the heat insulation chamber 17.
Then, the work W loaded in the heat insulating chamber 17 is heated to a required temperature range (for example, about 930 ° C.) by the plurality of heats h and is held for a predetermined time. It should be noted that a carburizing gas or a carbonitriding gas may be introduced into the heat insulating chamber 17 so that the surface layer of the work W may be subjected to a carburizing treatment or a carbonitriding treatment.

During this period, as shown in FIG. 3, in parallel, another work W that has already been oil-quenched in the quenching chamber 20 is moved from the quenching chamber 20 to the second running path R2 as shown in FIG. In the carry-out carriage 26 waiting on the rail r, it is transferred onto the uppermost table 29 via a plurality of staples 29 arranged on the carriage 26.
As shown by the arrow in FIG. 4, the another work W is conveyed upward by the unloading carriage 26 on the rail r of the second traveling path R2 in the figure, and is closest to the tip of the unloading conveyor C2. It is transported to the position where
Further, the other work W is transferred onto the carry-out conveyor C2 via the table 29 of the carry-out carriage 26, and after the oil and fat adhering to the surface in the cleaning chamber 2 is removed by the cleaning liquid, After being charged into the tempering furnace 3 and subjected to tempering processing of a required temperature pattern, it is carried out to the outside via the outlet conveyor c2.

On the other hand, in the heat retaining chamber 4, different works W previously heated to the required temperature range in the heating chamber 14 located on the lower side in FIG. 4 are transferred to the main body 5 through the transfer chamber 12 in the same manner as described above. After charging, after traveling on the rail r of the first traveling path R1 toward the lower side in the figure, it stops at the position where the delivery chamber 12 communicates with the opening of the airtight door 10 in the quenching chamber 20. To do. At this time, the carry-out carriage 26 travels in advance on the rail r of the second travel path R2 toward the lower retracted position (not shown) in the figure so as not to come into contact with the delivery chamber 12, It is in the retracted state.
The different work W is charged into the quenching chamber 20 via the table 13 on the heat retaining chamber 4 side, and is immersed in the oil 23 while being supported by the frame 24, so that the required work is performed. Oil-quenched. Then, the different work W is also transferred to the table 29 of the carry-out carriage 26 in the same manner as described above, and is carried on the rail r of the second traveling path R2 together with the carry-out carriage 26, and then the carry-out conveyor C2, It is carried out to the outside through the cleaning chamber 2, the tempering furnace 3, and the outlet conveyor c2.

In addition, the another work W that has been heated in the upper heating chamber 14 in FIG. 4 is also sent to the quenching chamber 20 and oil-quenched in the same manner as the different work W as described above. After that, it is carried on the rail r of the second traveling path R2 together with the carry-out carriage 26, and is carried out to the outside via the carry-out conveyor C2, the cleaning chamber 2, the tempering furnace 3, and the discharge conveyor c2.
According to the heat treatment equipment 1a having the above configuration, the above effects (1) to (5) can be surely exhibited.
In the heat treatment facility 1a, the positions of the carry-in conveyor C1 and the carry-out conveyor C2 may be replaced with each other.

  FIG. 5 is a plan view showing a heat treatment equipment 1b which is an application form of the heat treatment equipment 1a. As shown in FIG. 5, the heat treatment facility 1b is equipped with the same carry-in / carry-out conveyors C1 and C2, a quenching chamber 20, introduction / deriving conveyors c1 and c2, a cleaning chamber 2, and a tempering furnace 3. The heat treatment equipment 1b is different from the heat treatment equipment 1a in that the two heat-retaining chambers 4a and 4b travel on the rail r of the first traveling path R1 and the carrying-in / carrying-in on the first traveling path R1. That is, a total of four heating chambers 14 of a pair (plurality) are arranged on both end sides on the upper and lower sides in the figure sandwiching the carry-out conveyors C1 and C2. As shown in FIG. 5, the quenching chamber 20 is located between the carry-in conveyor C1 and the pair of heating chambers 14 added to the lower end side of the first traveling path R1.

In the heat treatment equipment 1b, one of the heat-retaining chambers 4a conveys the work W into one of the pair of upper heating chambers 14 shown in FIG. After the work W is transferred to one of the pair of heating chambers 14 on the lower side in FIG. 5 by the heat retention chamber 4b, the work W is transferred to the quenching chamber 20 (4a indicated by an arrow on the right side in FIG. 5). Moving range, refer to 4b moving range). The transportation of the work W other than these is the same as in the case of the heat treatment facility 1a.
According to the heat treatment facility 1b as described above, the above effects (1) to (5) can be reliably obtained even when the total number of works W to be heat treated per unit time increases.
In the heat treatment facility 1b, the positions of the carry-in conveyor C1 and the carry-out conveyor C2 may be replaced with each other.

FIG. 6 is a plan view showing an applied form of the heat treatment equipment 1b and showing a heat treatment equipment 1c different from the heat treatment equipment 1a.
As shown in FIG. 6, the heat treatment equipment 1c is equipped with the same carry-in / carry-out conveyors C1 and C2, heat-retaining chambers 4a and 4b, introducing / deriving conveyors c1 and c2, a cleaning chamber 2, and a tempering furnace 3. There is. The heat treatment equipment 1c is different from the heat treatment equipment 1b in that it has two hardening chambers 20a, 20b and two unloading carriages 26a, 26b. As shown in FIG. 6, one quenching chamber 20a is located between the carry-out conveyor C2 and the pair of heating chambers 14 arranged on the upper end side of the first traveling path R1, and the other quenching chamber 20b. Is located between the carry-in conveyor C1 and the pair of heating chambers 14 added to the lower end side of the first traveling path R1.
The quenching chambers 20a and 20b may be the same or the same type of quenching. For example, one may be for oil quenching and the other may be for water quenching or blast quenching. good.

In the heat treatment equipment 1c, the one heat-retaining chamber 4a conveys the work W to one of the pair of heating chambers 14 on the upper side in FIG. 6, and further conveys the work W into the quenching chamber 20a. It is conveyed to the carry-out conveyor C2 by the carry-out carriage 26a. (Refer to the moving ranges 4a and 26a indicated by arrows on the right side of FIG. 6)
On the other hand, the other heat-retaining chamber 4b conveys the work W into one of the pair of heating chambers 14 on the lower side in FIG. 6, and further conveys the work W into the quenching chamber 20b, and then the other unloading carriage. It is conveyed to the carry-out conveyor C2 by 26b (see moving ranges 4b and 26b indicated by arrows on the right side in FIG. 6). Conveyance of the work W other than these is the same as in the case of the heat treatment facility 1b.
According to the heat treatment equipment 1c as described above, even when the total number of works W to be heat treated per unit time is increased, or when different types of quenching are individually performed for each work W, the above effect ( It is possible to surely obtain 1) to 5).
In the heat treatment facility 1b, the positions of the carry-in conveyor C1 and the carry-out conveyor C2 may be replaced with each other.

The present invention is not limited to the forms described above.
For example, the carry-in conveyor C1 and the carry-out conveyor C2 may be arranged apart from each other as long as they are substantially parallel.
Further, the direction of the first or second traveling path R1, R2 may be substantially at right angles to the longitudinal direction of the carry-in conveyor C1 and the carry-out conveyor C2, and is not limited to a linear shape in plan view, The shape may be gently inclined or curved.
Further, the tempering furnace 3 may be an annealing furnace or may have an annealing function.
In addition, the first or second traveling path R1, R2 is a guide strip made of an iron plate embedded in the floor F along the surface of the floor F, and while being magnetically guided along the guide strip. Alternatively, the heat-retaining chamber or the carriage may be run.

  According to the present invention, a plurality of works can be continuously subjected to heat treatment such as quenching, can be installed in a relatively narrow space, and a relatively inexpensive heat treatment facility can be reliably provided.

1a-1c ……………… Heat treatment equipment 4,4a, 4b ………… Insulation chamber 10 ………………………… Airtight door 14 …………………… Heating chamber 12 …… …………… Transfer chamber 20, 20a, 20b… Quenching chamber 26, 26a, 26b… Carry-out trolley 29 ……………………… Table W ………………………… Workpiece C1 ……………………… Carry-in conveyor C2 ………………………… Carry-out conveyor R1 ……………………… 1st runway R2 ……………………… 1st run Road P ………………………… Pit

Claims (5)

A heat treatment facility for continuously quenching a plurality of works,
A work-carry-in conveyor and a work-carry-out conveyor that are parallel to each other,
The work carried on the carry-in conveyor is received inside through a transfer chamber, and a heat-retaining chamber that travels along a first traveling path along a direction intersecting the longitudinal direction of the carry-in conveyor and the carry-out conveyor,
A plurality of heating chambers that are arranged on at least one end side of the first traveling path and that receive the workpiece inside from the heat retaining chamber via the transfer chamber;
The work is placed inside at least the other end side of the first traveling path, and the work heated by any one of the heating chambers is received inside again via the transfer chamber. And a quenching room that accepts and quenches
Receiving the work that has been subjected to quenching in the quenching chamber, the carry-in conveyor and carry-out conveyor, and a carry-out carriage that travels a second traveling path located between the first traveling path,
The airtight door used for inserting and discharging the work in the quenching chamber opens and closes a single entrance / exit opening on the side of the first traveling path and the second traveling path,
The unloading carriage is equipped with a plurality of laterally slidable tables that deliver the quenched work onto the unloading conveyor.
Heat treatment equipment characterized by that. The quenching chamber is for subjecting the work to oil quenching or water quenching, and its periphery is surrounded by pits in plan view,
The heat treatment equipment according to claim 1, wherein The plurality of heating chambers are capable of carburizing the work.
The heat treatment equipment according to claim 1 or 2, characterized in that. The carry-out carriage is equipped with a plurality of telescopic-type tables that are slidable along the horizontal direction orthogonal to the second traveling path.
The heat treatment equipment according to any one of claims 1 to 3, characterized in that. The plurality of heating chambers are arranged on one end side in the first traveling path,
The quenching chamber is disposed on the other end side of the first traveling path,
The heat treatment equipment according to any one of claims 1 to 4, characterized in that.

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