Heat preservation device for heat treatment of dual-phase steel

Abstract

The utility model relates to a heat preservation device for heat treatment of dual-phase steel. The heat preservation device comprises heat preservation components arranged at an outlet of an induction furnace and an inlet of a cooling water ring, one end of the heat preservation assembly is connected with the induction furnace, and the other end of the heat preservation assembly is connected with the cooling water ring; the heat preservation assembly is arranged between the induction furnace and the cooling water ring, the dual-phase steel is prevented from making contact with air, heat loss of the dual-phase steel can be reduced through the heat preservation assembly, and rapid cooling of the dual-phase steel from 1000 DEG C or above is achieved.

Description

Technical Field

[0001] The utility model relates to a heat preservation device, in particular to a heat preservation device for heat treatment of dual-phase steel. Background Art

[0002] In the duplex steel production process, the duplex steel needs to be heat treated in an induction furnace, and then quickly cooled in a cooling water ring after the heat treatment.

[0003] When the duplex steel passes through the cooling water circle, it is necessary to cool the duplex steel rapidly, for example, cooling the duplex steel from 1060 degrees Celsius to below 350 degrees Celsius within one minute;

[0004] There is a gap between the existing induction furnace and the cooling water ring. When the duplex steel enters the cooling water ring from the induction furnace, it will come into contact with the air, causing the duplex steel to come into contact with the air and cool down, increasing the residence time of the duplex steel at 350 degrees Celsius to 1000 degrees Celsius. During this process, harmful phases will precipitate from the duplex steel, thus affecting the low-temperature impact performance and corrosion resistance of the duplex steel.

[0005] In summary, how to keep the dual-phase steel warm during the process of entering the cooling water circle from the induction furnace has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0006] The technical problem to be solved by the utility model is: how to achieve the heat preservation of the duplex steel during the process of the duplex steel entering the cooling water circle from the induction furnace;

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] The utility model is a dual-phase steel heat treatment insulation device, comprising: an insulation component arranged at the outlet of an induction furnace and the inlet of a cooling water ring; one end of the insulation component is connected to the induction furnace, and the other end is connected to the cooling water ring;

[0009] In this solution, by setting a thermal insulation component between the induction furnace and the cooling water ring, the contact between the duplex steel and the air is avoided. The thermal insulation component can reduce the heat loss of the duplex steel and achieve rapid cooling of the duplex steel from 1000 degrees Celsius.

[0010] In order to illustrate the specific structure of the insulation component, the insulation component used in the utility model includes: two flanges, which are respectively connected to the induction furnace and the cooling water ring through bolts; a plurality of frames, which connect the two flanges; an insulation layer, and a plurality of the frames are passed through and fixed to the insulation layer; the insulation layer is made of asbestos;

[0011] The insulation component in this solution is a squirrel cage connection, and the two flanges are fixedly connected to the induction furnace and the cooling water ring respectively. The frame is embedded with an insulation layer, and the insulation layer is made of asbestos, which can achieve the insulation of the duplex steel.

[0012] To illustrate another structure of the heat preservation component, the heat preservation component adopted by the utility model includes: two support members with slots, which are respectively connected to the induction furnace and the cooling water ring; a plug plate, which is suitable for being inserted into the slot; a connecting pipe, which connects the two plug plates, and the end of the connecting pipe forms a through hole with the plug plates; a heat preservation layer, which is filled in the interlayer of the connecting pipe; the material of the heat preservation layer is asbestos;

[0013] The two supports are respectively connected to the induction furnace and the cooling water ring. The inserts at both ends of the connecting pipe are inserted into the slots of the supporting parts. The connecting pipe is supported at the two supporting pieces by gravity, thereby realizing a detachable connection between the connecting pipe and the supporting part. The interlayer of the connecting pipe is filled with asbestos. When the duplex steel passes through the connecting pipe, the temperature loss is avoided, thereby realizing the heat preservation of the duplex steel.

[0014] Beneficial effects of the utility model: The utility model is a dual-phase steel heat treatment insulation device, which avoids the contact between the dual-phase steel and the air by arranging the insulation component between the induction furnace and the cooling water circle. The heat loss of the dual-phase steel can be reduced through the insulation component, and the rapid cooling of the dual-phase steel from 1000 degrees Celsius or above can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a diagram of the cooperation between the utility model and the induction furnace;

[0017] Figure 2 It is a schematic diagram of the structure of the thermal insulation component omitting the thermal insulation layer;

[0018] Figure 3 is a cross-sectional view of the insulation assembly;

[0019] Figure 4 It is another structural schematic diagram of the thermal insulation component;

[0020] Figure 5 is a cross-sectional view of the connecting pipe;

[0021] In the figure: 1-induction furnace, 2-insulation component, 3-flange, 4-skeleton, 5-insulation layer, 6-skeleton, 7-slot, 8-support, 9-plug plate, 10-connecting pipe, 11-through hole. DETAILED DESCRIPTION

[0022] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0023] like Figure 1-5 As shown, the utility model is a dual-phase steel heat treatment insulation device, comprising: an insulation component 2 arranged at the outlet of an induction furnace 1 and at the inlet of a cooling water ring (not shown in the figure); one end of the insulation component 2 is connected to the induction furnace 1, and the other end is connected to the cooling water ring;

[0024] In this solution, by setting a thermal insulation component between the induction furnace and the cooling water ring, the contact between the duplex steel and the air is avoided. The thermal insulation component can reduce the heat loss of the duplex steel and achieve rapid cooling of the duplex steel from above 1000 degrees Celsius.

[0025] like Figure 1-3 As shown, in order to illustrate the specific structure of the insulation component, the utility model adopts an insulation component 2 including: two flanges 3, which are respectively connected to the induction furnace 1 and the cooling water ring through bolts; a plurality of frames 4, which connect the two flanges 3; an insulation layer 5, and a plurality of the frames 6 are passed through and fixed to the insulation layer 5; the insulation layer 5 is made of asbestos;

[0026] The insulation component in this solution is a squirrel cage connection, and the two flanges are fixedly connected to the induction furnace and the cooling water ring respectively. The frame is embedded with an insulation layer, and the insulation layer is made of asbestos, which can achieve the insulation of the duplex steel.

[0027] like Figure 4-5 As shown, in order to illustrate another structure of the heat preservation component, the heat preservation component adopted by the utility model includes: two support members 8 with slots 7, which are respectively connected to the induction furnace 1 and the cooling water ring; a plug plate 9, which is suitable for being inserted into the slot 7; a connecting pipe 10, which connects the two plug plates 9, and the end of the connecting pipe 10 forms a through hole 11 with the plug plates; a heat preservation layer 5, which is filled in the interlayer of the connecting pipe 10; the material of the heat preservation layer 5 is asbestos;

[0028] The two supports are respectively connected to the induction furnace and the cooling water ring. The inserts at both ends of the connecting pipe are inserted into the slots of the supporting parts. The connecting pipe is supported at the two supporting pieces by gravity, thereby realizing a detachable connection between the connecting pipe and the supporting part. The interlayer of the connecting pipe is filled with asbestos. When the duplex steel passes through the connecting pipe, the temperature loss is avoided, thereby realizing the heat preservation of the duplex steel.

[0029] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A dual-phase steel heat treatment and insulation device, characterized in that: include: Insulation components arranged at the outlet of the induction furnace and the inlet of the cooling water loop; One end of the heat preservation component is connected to the induction furnace, and the other end is connected to the cooling water ring.

2. A dual-phase steel heat treatment and heat preservation device according to claim 1, characterized in that: The thermal insulation component comprises: Two flanges, which are respectively connected to the induction furnace and the cooling water ring through bolts; A plurality of frames connecting the two flanges; A heat-insulating layer, wherein a plurality of the frames are passed through and fix the heat-insulating layer; The material of the thermal insulation layer is asbestos.

3. A dual-phase steel heat treatment and heat preservation device according to claim 1, characterized in that: The thermal insulation component comprises: Two supporting members with slots are respectively connected to the induction furnace and the cooling water ring; An inserting board, which is suitable for being inserted into the slot; A connecting pipe, which connects the two plug plates, and whose ends form a through hole with the plug plates; A heat-insulating layer filled in the interlayer of the connecting pipe; The material of the thermal insulation layer is asbestos.

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