JPS6160816A - Heating and cooling device - Google Patents

Abstract

PURPOSE:To execute uniformly heat treatment to each part of a heat treating member by constituting the titled device so that the heat treating member such as a metallic rod-shaped material, a linear material, a machine parts material, etc., are heated and cooled by a heating medium flow part of sand, etc. CONSTITUTION:For instance, a metallic rod-shaped material 2 is guided by a rotation of a screw 1, and shifted to a heating part A. It passes through the inside of sand S heated, raised in temperature and floated by a hot air blown up from its lower part D, and its temperature is raised. Subsequently, it is shifted to a soaking part B, passes through the inside of the sand S heated, raised in temperature and floated by a hot air blown up from the lower part E in the same way, and its temperature is raised to a soaking temperature. Said material is then shifted to a cooling part C, passes through the inside of said S cooled and floated by a cold air blown up from the lower part F and the rod-shaped material 2 is cooled uniformly.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of the Invention The present invention relates to a heating and cooling apparatus for continuously heat-treating a heat-treated member.

(B) Background of the Invention Conventionally, there are various heat treatment methods such as molten metal heating, atmospheric heating, electric furnaces, and vacuum furnaces, but these methods are not sufficient to heat-treat heat-treated members continuously and uniformly, and even more uniformly. There is a wire rod batch method using fluidized sand as a heat treatment method, but this is not continuous, and a means that can perform continuous and uniform heat treatment is desired.

(c) Purpose of the Invention The object of the present invention is to provide cold cooling that allows continuous and uniform heat treatment by low-oxygen heating using a heat medium flowing portion such as sand.

(→ Summary of the Invention The present invention is characterized in that it is a heating and cooling device that heats and cools a heat-treated member using a heat medium flowing portion such as sand.

(e) Examples of the invention Embodiments of the invention will be described in detail based on the drawings.

Embodiment L (See Figure 7.2) Figure 7.2 shows a fluidized bed type heat treatment furnace for continuously heat treating rod-shaped materials, and Figure 1 is a partial cross-sectional plan view; FIG. 2 is a longitudinal sectional side view thereof.

In the figure, (A) is a heating section, (B) is a soaking section, and (C) is a cooling section.

(1) +t m WL This conveyor screw (1) Get has the same number of screws on both the left and right sides, and each adjacent side rotates in opposite directions.

(2) is a bar-shaped material, and this bar-shaped material (2) is transported in the direction of the arrow by a conveyor screw (1).

(3) is a conveyor roller that conveys the bar-shaped material (2) on the entry side to the front of the heat treatment furnace. The rod-shaped material (2) is then moved onto the screw (υ) by the rotation of the screw (υ).
While being guided by the guide plate (5) at the end, it moves to the heating section (N), where it passes through the floating sand (S) where it is heated and heated by the hot air blown up from the lower part (D). hand,
The sand is transferred to the soaking section (B), and the floating sand is heated to the soaking temperature by the hot air blown up from the lower part (E) in the same way as the heating section (A) described above. While being transferred inside, the crouched body (2) is uniformly heated and transferred to the cooling section (c).

In the cooling part (q), the sand (mi) in the cooling part (q) cools and floats due to the cold air blown up from the lower part (F'), and the rod-shaped material (2) is transferred and cooled therein.

After completing the above heat treatment, the rod-shaped material (2) that has reached the final end of the conveyor screw (1) is transferred by the kicker (6) onto the conveyor roller (7) on the exit side and sent to the next process. .

The heating section (A), the soaking section (uniform hot sand) and the cooling section (C)'s cold sand (S) released by the rotation of the above-mentioned screw (1 n) are placed in the hopper (G>()l). (J)'>, and is returned to each heating section (N1 soaking section (uniforming section) and cooling section (q) by each conveyor (K) and circulated.

Embodiment 2 (See FIG. 3) FIG. 3 is a vertical sectional side view showing a heat treatment furnace for wire materials, and the same reference numerals are given to the same parts as in the previous example.

As shown in Fig. 3, a guide pipe (1) is installed through the heating section (gradient), soaking section (B), and cooling section (q).
It has been fi.

This guide pipe (11) has pressure chambers (
b) (b) is installed, and the atmospheric gas is in a pressure chamber (Foundation).
It is configured to communicate through the guide pipe (U) and flow to the pressure chamber 03).

Heating section (in the lower part of the slope, hot air is blown up from the DI, and floating dynamic hot sand is formed around the guide tube (11) to heat the guide tube (11) and the atmospheric gas to raise the temperature and heat the guide tube). Effectively heats and raises the temperature of the wire material passing through it.

Next, hot air is blown up from the lower part (gradient) in the same way as the heating part (G) to bring the temperature of the floating moving sand (S) around the induction pipe (11) to a uniform temperature. (11) and the temperature of the internal atmospheric gas is raised to the soaking temperature to soak and heat the passing linear body (4).

Cooling section (lower part in q, blowing cold air up from ■ and guiding pipe (
6) The surrounding floating sand (S) is cooled to cool the guide pipe (6) and the internal atmospheric gas, thereby cooling the passing wire material.

As described above, the rod-shaped material (b) passing through the guide tube (Ll)
is heated, soaked, and cooled continuously in the heating section (gradient), soaking section (B), and cooling section (Q). heating and cooling.

Embodiment 3 (See Figure ≠) What is shown in Figure 1 It is a longitudinal sectional side view showing a heat treatment furnace for mechanical parts, and the same reference numerals are given to parts corresponding to Example/.

The device shown in Fig. 1 consists of a heating section (8), a soaking section (B), and a cooling section (q), the lower part of which is formed into a net-like U-shaped case υ, and the inside of the U-shaped case υ. Suitable Sand (S)
) is built-in.

Inside the U-shaped case circle, there is a conveyor screw (2) that transports the processed material (S machine parts material) (2), and this screw (2) transports the processed material (E) to the heating section (A) and the soaking section ( B
) and then sequentially transferred to the cooling section (C).

In the heating section (8), hot air is blown up from the lower part (D), and the sand (inside the U-shaped case υ in the heating section (N) is heated to high temperature and the treated material 4 is heated as floating dynamic hot sand inside the hot sand (S). It is heated by a screw and transferred to a soaking section (B) by a screw.

In the soaking section (B), the sand (S) in the U-shaped case υ in the lower part (heat soaking section CB) is heated to a soaking temperature and becomes floating moving sand, and the processing material is transferred inside. (G) is uniformly burned and transferred to the cooling section (C) by a screw.

Conveyor screw (rolling) is floating hot sand i3
), the hot sand (Mi) is sent along with it and falls into hopper 0 from the drop port (C), and is sent back to the entrance (Kou) by the conveyor (K) and returned to the U-shaped case C2υ. It circulates.

The treated material (2) transferred to the cooling section (C) is sequentially conveyed while removing the covering sand, and is sent from the take-out port (C) to the treated material receiving box (toward), where the heat treatment is completed.

(F) Effects of the Invention According to the present invention, the heating medium flowing section is arranged to heat and cool the heat treatment member, so that various shapes can be continuously processed in the heat treatment furnace by the heating medium flowing section. It is possible to heat-treat parts, and since the heat treatment is carried out in sand, each part of the heat-treated part can be uniformly heat-treated, which not only has a great effect on homogenizing the product, but also has the advantage of the heat medium flow section. High heat transfer and low oxygen heating can be achieved, allowing safe and pollution-free operation regardless of the type of combustion gas.

[Brief explanation of the drawing]

The drawings show three embodiments of the present invention. FIG. 1 is a partial cross-sectional plan view of a heat treatment furnace for bar-shaped materials according to the example, FIG. 2 is a vertical cross-sectional side view thereof, and FIG. FIG. 1 is a longitudinal sectional side view of a heat treatment furnace for processing a wire material in Example 3. FIG. (A)... Heating section, CB)... Soaking section, (C)...
・Cooling part, ■... Fluid sand, (2)... Rod-shaped material, 0→
... wire material, (g) ... machine parts material. Patent applicant Kuchizai Kogyo Co., Ltd.) Be 1 Core Nbe Do Hashibe J Hashibe 4

Claims (4)

[Claims] (1) A heating and cooling device characterized in that it is configured to heat and cool heat-treated members such as metal rods, wires, and mechanical parts in a heat medium flowing section such as sand. (2) A patent claim in which a rod-shaped heat-treated material is placed on a plurality of conveyor screws, and is conveyed sequentially to a heating section by a heat medium flow section, a soaking section, and a cooling section, and heat-treated continuously. The heating and cooling device according to item 1. (3) The linear heat-treated material is continuously conveyed and passed along with atmospheric gas through a pipe penetrating a heat treatment furnace composed of a heating section, a soaking section, and a cooling section by means of a heating medium flow section, and heating, soaking,
The heating and cooling device according to claim 1, which performs a cooling process. (4) The heating and cooling apparatus according to claim 1, wherein the heat-treated material for mechanical parts is continuously heated and cooled while being conveyed by a screw conveyor together with the heat medium flow section.