JPH01191736A - Method and device for cooling material to be heated of heat treatment furnace - Google Patents

Abstract

PURPOSE:To cool materials to be heated of various sizes and shapes and to straighten the bends thereof by supplying cooling water from plural points spaced at prescribed intervals in the feed direction of the materials to be heated after a heat treatment, thereby cooling said materials. CONSTITUTION:The cooling water is supplied from a vertical direction via upper and lower cooling water supply members 12, 25 onto the materials 2 which are to be heated and are sent from an outlet 5 of a heat treatment furnace 1 via roller conveyors 3 to cool said materials. Plural pieces of said upper cooling water supply members 12 are suspended movably forward and backward, as shown by arrows, in the transfer direction of the materials 2 on front and rear frames 11 and are so provided that the spacings thereof can be adjusted. On the other hand, plural pieces of the lower cooling water supply members 25 are disposed alternately zigzag with respect to the upper cooling water supply members 12 and are so provided that said members can be tilted around the lower supply pipes 26 on a receiving base 30 to adjust the cooling water spray direction. The supply conditions of the cooling water are thereby changed according to the sizes and shapes of the materials 2 and the bends of said materials are adequately straightened.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application This invention relates to a method and apparatus for cooling a heated object in a heat treatment furnace.

(2) Conventional technology Heat treatment (solution treatment) is applied to objects to be heated such as rod-shaped stainless steel materials that are continuously fed from the outlet of a heat treatment furnace.
bending is more likely to occur. Therefore, conventionally, cooling water is supplied from above and below to the object to be heated, which has been heat-treated as described above and is sent from the outlet, to cool it and correct the bend.

(3) Problems to be Solved by the Invention By the way, in the conventional cooling method, cooling water is supplied from one arbitrary fixed place at the upper and lower positions in the feeding direction of the heated object, and the amount of supply is easy. Moreover, because it is not able to be adjusted quickly, it cannot adequately handle heated objects of various sizes and shapes, and the cooling effect is uneven, making it difficult to correct one bend as expected. There was a problem.

Therefore, this invention was made in view of the above-mentioned conventional problems, and its purpose is to be able to change cooling water supply conditions so as to correspond to heated objects of various sizes and shapes. It is an object of the present invention to provide a cooling method and apparatus capable of correcting the curvature of the object to be heated.

(4) Means for Solving the Problems In order to achieve the above object, the cooling method of the present invention supplies cooling water from a plurality of locations spaced at predetermined intervals in the feeding direction of the heated object. Further, as shown in FIG. 1, the cooling device of the present invention supplies cooling water to the heat-treated object 2 sent from the outlet 5 of the heat treatment furnace 1 at upper and lower positions in the feeding direction. A plurality of upper cooling water supply members 12 and lower cooling water supply members 25 are provided at predetermined intervals, and the upper cooling water supply members 12 and lower cooling water supply members 25 are arranged alternately in a staggered manner. ing.

(5) Effect According to the cooling method described above, cooling water is supplied from a plurality of locations spaced at predetermined intervals in the feeding direction of the heated object. Therefore, it is possible to supply cooling water suitable for heated objects of various sizes and shapes, thereby uniformly cooling the heated objects. Furthermore, according to the cooling device, the upper cooling water supply member 12 and the lower cooling water supply member 25 are arranged alternately in a staggered manner. Cooling water can be precisely supplied in the feeding direction of the heated object 2.

(6) Example In Figs. 1 and 2, 1 is a heat treatment furnace for solution-treating the object 2 to be heated, and 3 is a roller conveyor that horizontally conveys the object 2 sent from the outlet 5 of the furnace 1. , is provided in a machine frame 6 installed outside the furnace 1. Each roller 7 of the roller conveyor 3 is rotationally driven via a chain 10 mounted on a sprocket 8 mounted on one of the supported shafts.

Front and rear frames 11, 11' as shown in FIG. 3 are erected on both sides of the roller conveyor 3, and the front and rear frames 11, 11'
A plurality of upper cooling water supply members 12 are installed in the upper part between them, and the flange parts 13 and 13' extending from the upper edges on both sides are connected to the front and rear frames 11.
．． 11', and is suspended so as to be movable in the feeding direction of the object to be heated 2, as shown by the arrow in FIG. 14
is a connecting piece installed between the upper parts of the front and rear frames 11 and 11'.

The upper cooling water supply member 12 has a hollow box 17 that stores the cooling water supplied from the upper supply pipe 16, and inside this box 17 there is an overflow which flows over when the supplied cooling water reaches a predetermined water level. A wall 18 is provided. A supply port (not shown) for supplying the cooling water that has overflowed the overflow wall 18 to the heated object 2 on the roller conveyor 3 is opened at the lower part of the inner wall side of the box 17 surrounded by the overflow wall 18. has been done. Such movement of the cooling water supply member 12 is normally carried out by suspending it with a crane.

Further, on the outside of the front and rear walls 11.11', a heat insulation wall 22.22' as shown in FIG. The water receiver is provided such that a hood 23 covers the sides and lower part of the roller conveyor 3 and a lower cooling water supply member to be described later.

On the other hand, the upper cooling water supply member 1
A plurality of lower cooling water supply members 25 are arranged at a position opposite to 2. The lower cooling water supply member 25 is the roller 7
It has a hollow box 27 that stores the cooling water supplied from the lower supply pipe 26 which is oriented in the same direction as the above. A spout (not shown) that spouts and supplies
In a normal state, the openings are opened so that the jetting direction is staggered with the cooling water supply direction from the supply port of the upper cooling water supply member 12. Lower supply pipe 26 of lower cooling water supply member 25
is supported on the upper surface of a pedestal 30 attached to the machine frame 6 via a horizontal beam 28. Further, a water receiver is attached to one end of a lower supply pipe 26 that protrudes outward from the hood 23, and the supply pipe is rotated to change the direction of the cooling water supply member 25 and to change the direction of the jet from its spout. A predetermined angle θ in the feeding direction of the heated object 2,
An adjustable mechanism 32 is provided. This adjustment mechanism 3
2 is as shown in FIG. 6, and the receiving plate 3 supports the end of the lower supply pipe 26 with a semicircular notch in the upper surface.
It is provided with a pedestal 35 having a number 3. An adjustment plate 37 that extends downward from the end of the lower supply pipe 26 and is welded is fitted to the receiving plate 33, and both plates 33, 37 are adjustable and fixed by a tightening member 38 such as a bolt nut.

When the adjustment plate 37 is fixed by the tightening member 38, the tightening member 38 slides along the elongated hole 40 formed therein, so that the adjustment plate 37 is tilted by the angle θ as shown in FIG. 6(B). 6 Therefore, it is possible to adjust the jetting direction from the spout of the cooling water supply member 25 within the range of this angle θ, and it can be changed manually according to the size, shape, etc. of the heated object 2. . In FIG. 5, 42 is a universal joint.

Cooling water is supplied to the box 27 of the cooling water supply member 25 from both ends of the lower supply pipe 26 so that it can be jetted out from the spout.

In FIG. 2, reference numeral 45 denotes a water-cooled roller for transferring the heated object 2, which is disposed outside the furnace 1 of the roller conveyor disposed from the inside of the furnace 1 to the outlet 5, and this water-cooled roller 45 is supported while It is designed to be rotationally driven via a chain 47 mounted on a sprocket 46 mounted on the end of the shaft. The water cooling roller 45 is hollow, and cooling water is supplied into the interior from one end as shown by the arrow, and is discharged from the other end.

48 is a cooling water drain pipe provided in communication with the lower part of the water receiving hood 23, and is connected to a pit (not shown).

In the above, the supply pipe 16 of the upper cooling water supply member 12,
The amount of cooling water supplied to the supply pipe 26 of the lower cooling water supply member 25 can be adjusted by operating a valve provided in a pipe (not shown).

Incidentally, in this embodiment, the cooling water supply member 12.degree. 25 is merely a preferred example, and it goes without saying that a different design may be used without changing the gist.

(7) Effects of the Invention Since the present invention has the above-described configuration, it has the following excellent effects.

In the cooling method of claim 1, cooling water can be supplied according to various sizes and shapes of objects to be heated, and can be cooled evenly. Compared to those that cool objects to be heated due to their size, shape, etc., it is possible to reliably and easily straighten the curvature of objects to be heated. In the cooling device according to claim 2, since the cooling water can be supplied to the heated object finely in the feeding direction of the heated object, that is, cooling water can be supplied to the heated object alternately from the upper and lower parts, the cooling of the heated object can be carried out in the feeding direction. This reduces the possibility of variations occurring.

[Brief Description of the Drawings] Figure 1 is a front view of an embodiment of the present invention, Figure 2 is a plan view of the same, Figure 3 is a partially omitted side view of the same, and Figure 4 is the lower part of the same. Front view showing the mounting part of the cooling water supply member, etc., No. 5
The figure is a side view, FIG. 6 is an enlarged view of the mechanism for adjusting the angle of the lower cooling water supply member, (A) is a side view, (
B) is a front view. 1...Heat treatment furnace 2...Heat object 3...Roller conveyor 6...Machine frame 11.11'...Front and rear frames 12...Upper cooling water supply member 22.22'...Heat insulation Wall 23...Water pan hood 25...Lower cooling water supply member 30.35...Base 32...Tune! ! Mechanism 3
3... Receiving plate 37... Adjustment plate 38... Tightening member 40... Elongated hole helmet 3 Eye 6 Eye (A) Rini ~ Leave

Claims (1)

[Claims] 1. In a method of cooling a heat-treated object sent from the outlet of a heat treatment furnace by supplying cooling water from above and below, the cooling water is supplied at a predetermined interval in the feeding direction of the object. A method for cooling a heated object in a heat treatment furnace, characterized in that the material is supplied from multiple locations. 2. A plurality of upper cooling water supply members and lower cooling water supply members each supplying cooling water to the heat treated object at the upper and lower positions in the feeding direction of the heat treated object sent from the outlet of the heat treatment furnace. 1. A cooling device for a heated object in a heat treatment furnace, characterized in that an upper cooling water supply member and a lower cooling water supply member are arranged at predetermined intervals and alternately arranged in a staggered manner.