CN115537533A - Assembled annealing heat treatment furnace - Google Patents
Assembled annealing heat treatment furnace Download PDFInfo
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- CN115537533A CN115537533A CN202211342718.XA CN202211342718A CN115537533A CN 115537533 A CN115537533 A CN 115537533A CN 202211342718 A CN202211342718 A CN 202211342718A CN 115537533 A CN115537533 A CN 115537533A
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- furnace
- heat treatment
- annealing
- assembled
- top cover
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
Abstract
The invention relates to an assembled annealing heat treatment furnace, which comprises a furnace platform (1), a stand column (2), a furnace wallboard (3), a top cover (4), a heat insulation material (5) and a resistance heater (6), wherein the heat insulation material (5) is laid on the inner wall surfaces of the furnace wallboard (3) and the top cover (4), the resistance heater (6) is arranged at the bottom of the furnace platform (1), the resistance heater (6) is also laid on the furnace wallboard (3), and the resistance heater (6) is connected with a control box which is externally connected with a power supply through a cable. The assembled annealing heat treatment furnace provided by the invention can be recycled; the section of the furnace body is polygonal, and the shape of the furnace body can be changed according to the requirements of different batches of products; the furnace wall plate is built in a building block mode, so that the hearth meets the integral heat treatment requirement of the component; the electrified heater is used as a heat source, heating is uniform during heat treatment, the heat treatment effect is good, the construction of the heat treatment furnace is slightly influenced by the restriction of site space, and the method is pollution-free, free of waste gas emission, safe and environment-friendly.
Description
Technical Field
The invention relates to the field of equipment manufacturing, in particular to a spliced annealing heat treatment furnace.
Background
The heat treatment furnace is an electric furnace or a fuel furnace for heating a workpiece in the furnace for heat treatment. Commonly used heat treatment furnaces include a box-type resistance furnace, a pit-type resistance furnace, a gas carburizing furnace, a salt bath furnace, and the like. Typically, a continuous furnace is used, wherein workpieces or materials are continuously loaded from a loading door, passed through a hearth, and continuously discharged from a discharge door. A common in-furnace transfer method is to load a workpiece on a heat-resistant steel rail and transfer the workpiece by a walking beam or a pusher. In recent years, a heat-resistant steel conveyor belt has been used for transportation. In this way, the heat treatment operation is more rationalized, greatly increasing the possibility of automation and unattended management of the heat treatment process.
Due to the variety of heat treatment process types and the shape and the size of heat treatment workpieces, the heat treatment furnace types and the structures also present various types, the classification methods of the heat treatment furnace are many, and different classification methods represent different characteristics:
(1) Dividing according to a mechanical mode: a roller hearth furnace, a step furnace, a car-type furnace, an external mechanized chamber furnace, a chain furnace, a rotary hearth furnace, a vibrating hearth furnace, a bell-type furnace, etc.;
(2) Dividing according to the highest temperature: the furnace temperature is higher than 1000 ℃ and is a high-temperature heat treatment furnace; a medium temperature heat treatment furnace at 650-1000 ℃; a low-temperature heat treatment furnace below 650 ℃;
(3) Dividing according to heating heat sources: there are coal-fired furnace, oil burner and gas-fired furnace taking fuel combustion as heat source; there are resistance furnaces, electrode furnaces, induction heating furnaces, etc., which use electric energy as a heat source.
The assembly welding parts in the equipment manufacturing field are more, and in order to eliminate or reduce internal stress generated in the component assembly welding manufacturing process, postweld annealing heat treatment is generally adopted, and the heat treatment is low-temperature heat treatment. The low-temperature heat treatment furnace taking fuel combustion as a heat source and electric energy as a heat source is common equipment, and the cross section of the heat treatment furnace is circular or square; a general square heat treatment furnace is built on a workshop floor, the specification sizes are 5m (inlet and outlet height) × 5m (inlet and outlet width) × L (L represents the length of a furnace body, the same is applied below), 7m × 7m × L and 9m × 9m × L, and the specification sizes of a large heat treatment furnace are 11m × 11m × L and 13m × 13m × L, but the large heat treatment furnace has less equipment, high construction cost and high maintenance and use cost; the round heat treatment furnace is mostly built in a pit type, so the round heat treatment furnace is also called a pit type heat treatment furnace and is generally built under the ground of a workshop. Once the heat treatment furnace of the two types is built, the external dimension of the furnace body cannot be easily changed.
In equipment manufacturing, small-sized shell components, small-sized container components and the like can be integrally manufactured, integrally transported and hoisted to enter an annealing furnace for annealing under the condition that the small-sized shell components, the small-sized container components and the like can enter the existing annealing furnace. For large-scale furnace shell components and large-scale container components (such as a high-temperature section of a furnace shell of a hot blast furnace, a tuyere section of a furnace shell of the blast furnace and a gas sealing cover section), the method is limited by few large-scale annealing furnace equipment and great ultra-wide and ultra-high transportation difficulty of the components, and in most cases, the method adopts the steps of dividing small sections and each small section into a plurality of sheet-shaped supplies to an installation site, carrying out local heat treatment after field assembly and welding, namely paving heating sheets in a certain range near longitudinal and transverse welding seams of a shell and a heat affected zone thereof, coating heat insulation cotton on the outer sides of the heating sheets, and then carrying out heating; or after on-site assembly, the heating sheets are paved on the whole shell, the outer side of the shell is coated with heat-insulating cotton, and then heating is carried out.
Disclosure of Invention
The invention aims to overcome the defects and provides the assembled electric heating heat treatment furnace for the annealing heat treatment of the component, and the furnace body structure of the assembled electric heating heat treatment furnace is convenient to rapidly install and disassemble, can be recycled, and is safe and environment-friendly.
In order to achieve the above object, the present invention is realized by:
the utility model provides a pin-connected panel annealing heat treatment furnace, includes stove top (1), stand (2), stove wallboard (3), top cap (4), insulation material (5) and resistance heater (6), wherein, insulation material (5) are laid to the inner wall surface of stove wallboard (3) and top cap (4), and resistance heater (6) have also been laid on resistance heater (6), stove wallboard (3) to the bottom of stove top (1), resistance heater (6) have been put through the outside control box of power through the cable junction.
In the assembled annealing heat treatment furnace, the furnace platform (1) is formed by assembling a plurality of plate members, and each plate is formed by assembling and welding steel plates and section steel; channel steel (1-1) serving as a supporting piece and a reinforcing rib is arranged below the periphery of each plate member, steel plates (1-2) are arranged on the channel steel, two adjacent plates are connected into a whole through short angle steel (1-3) and bolt connecting pieces (1-4), and a plurality of connecting points are arranged at intervals; wherein, the furnace platen on the outermost side is not provided with an angle steel connecting point.
In the assembled annealing heat treatment furnace, the upright post (2) comprises H-shaped steel and a post bottom plate, and the total height and the section size of the H-shaped steel are determined according to the height size of a component to be subjected to heat treatment and annealing; the H-shaped steel (2-2) is installed and welded on the furnace platform steel plate through the column bottom plate (2-1), and a flange plate on one side, facing the hearth, of the H-shaped steel (2-2) is provided with paired bolt holes in advance and used for installing and connecting furnace wall plates.
In the assembled annealing heat treatment furnace, the furnace wall plate (3) and the upright post (2) are connected with each other to form the furnace wall of the heat treatment furnace; the left side and the right side of each furnace wall plate (3) are provided with long round holes and folded edges, and the furnace wall plates are connected with the upright posts (2) through bolts; the upper end and the lower end of the furnace wall plate (3) are welded with angle steel (3-2), and holes are formed in the angle steel and are connected with the furnace wall plate (3) at the upper part and the lower part through bolts; all the furnace wall plates (3) are connected well up and down and are connected with the upright posts (2) into a whole to form a heat treatment furnace using space, namely a hearth.
The spliced annealing heat treatment furnace comprises a top cover (4): the furnace is formed by combining a steel plate and a section bar, the top cover (4) is a plane top cover or a conical top cover, and the external dimension of the top cover is larger than the dimension of an upper opening of a furnace chamber; the top of the top cover (4) is provided with a lifting lug and an exhaust hole.
The heat insulation material (5) of the assembled annealing heat treatment furnace is rock wool boards and aluminum silicate refractory fibers, and the total thickness is not less than 200mm.
In the assembled annealing heat treatment furnace, the joint of the resistance heater (6) is led to the outside of the furnace wall plate (3) through round steel to be connected with an annealing line; a resistance heater (6) preset on the furnace wall plate (3), wherein the joint of the resistance heater is connected with an annealing line through an opening; all annealing lines and thermocouple temperature measuring point signal lines on the furnace body are respectively connected to the corresponding heat treatment control box terminal rows.
According to the assembled annealing heat treatment furnace, two doors are arranged at the bottom of a furnace wallboard (3), heat insulation materials (5) are also laid on the inner sides of the doors, and the two doors are symmetrically arranged; a ladder stand with a protective cage is arranged outside the furnace wall and reaches the outside of the top cover (4).
According to the assembled annealing heat treatment furnace provided by the invention, the plate structures of the furnace platform, the upright posts and the wall plates are connected by bolts, the top cover is directly placed at the upper opening of the furnace cavity by means of dead weight, the furnace body structure is stable, the assembly and disassembly are convenient, and the furnace body can be recycled; the cross section of the furnace body is polygonal, and the shape of the furnace body can be changed according to different batches of product requirements; the design total height of the upright posts and the furnace wall plates can be changed according to the height requirements of different batches of products, and the furnace wall plates are built in a building block mode, so that the hearth meets the integral heat treatment requirement of the components; the electrified heater is used as a heat source, so that the heating is uniform during heat treatment, and the heat treatment effect is good. The construction of the heat treatment furnace is slightly influenced by the restriction of site space, and the heat treatment furnace has the advantages of no pollution, no waste gas emission, safety, environmental protection, recycling and material saving.
Drawings
Fig. 1 is a schematic structural diagram 1 of a built-up annealing heat treatment furnace according to the present invention.
Fig. 2 is a schematic structural diagram 2 of the assembled annealing heat treatment furnace according to the present invention.
Fig. 3 is a schematic structural diagram 3 of the assembly annealing heat treatment furnace according to the present invention.
Fig. 4 is a schematic structural diagram 4 of the assembled annealing heat treatment furnace according to the present invention.
Fig. 5 is a schematic structural diagram 5 of the assembled annealing heat treatment furnace according to the present invention.
Fig. 6 is a schematic structural diagram 6 of the assembly annealing heat treatment furnace according to the present invention.
Fig. 7 is a schematic structural diagram 7 of the assembly annealing heat treatment furnace according to the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in fig. 1 to 7, the assembled annealing heat treatment furnace comprises a furnace platform (1), a column (2), a furnace wall plate (3), a top cover (4), heat insulation materials (5) and resistance heaters (6), wherein the heat insulation materials (5) are laid on the inner wall surfaces of the furnace wall plate (3) and the top cover (4), the resistance heaters (6) are arranged at the bottom of the furnace platform (1), the resistance heaters (6) are also laid on the furnace wall plate (3), and the resistance heaters (6) are connected with a control box which is connected with a power supply outside through cables.
The assembled annealing heat treatment furnace is characterized in that a furnace platform (1) is formed by assembling a plurality of plate members, and each plate is formed by assembling and welding steel plates and section steel; channel steel (1-1) serving as a supporting piece and a reinforcing rib is arranged below the periphery of each plate member, steel plates (1-2) are arranged on the channel steel, two adjacent plates are connected into a whole through short angle steel (1-3) and bolt connecting pieces (1-4), and a plurality of connecting points are arranged at intervals; wherein, the furnace platen at the outermost side is not provided with angle steel connection points.
In the assembled annealing heat treatment furnace, the upright post (2) comprises H-shaped steel and a post bottom plate, and the total height and the section size of the H-shaped steel are determined according to the height size of a component to be subjected to heat treatment and annealing; the H-shaped steel (2-2) is installed and welded on the furnace platform steel plate through the column bottom plate (2-1), and a flange plate on one side, facing the hearth, of the H-shaped steel (2-2) is provided with paired bolt holes in advance and used for installing and connecting furnace wall plates.
In the assembled annealing heat treatment furnace, the furnace wall plate (3) and the upright post (2) are connected with each other to form the furnace wall of the heat treatment furnace; the left side and the right side of each furnace wall plate (3) are provided with long round holes and folded edges, and the furnace wall plates are connected with the upright posts (2) through bolts; the upper end and the lower end of the furnace wall plate (3) are welded with angle steel (3-2), and holes are formed in the angle steel and are connected with the furnace wall plate (3) at the upper part and the lower part through bolts; all the furnace wall plates (3) are connected well up and down and are connected with the upright posts (2) into a whole to form a heat treatment furnace using space, namely a hearth.
The spliced annealing heat treatment furnace comprises a top cover (4): the furnace is formed by combining a steel plate and a section bar, the top cover (4) is a plane top cover or a conical top cover, and the external dimension of the top cover is larger than the dimension of an upper opening of a furnace chamber; the top of the top cover (4) is provided with a lifting lug and an exhaust hole.
In the assembled annealing heat treatment furnace, the heat insulation material (5) refers to a rock wool plate and aluminum silicate refractory fiber, and the total thickness is not less than 200mm; the joints are staggered when the materials of each layer are installed. The concrete laying method of the heat insulation material comprises the following steps:
(1) Mounting a furnace wallboard heat-insulating material: after the furnace wall plates are manufactured, welding anchoring nails can be installed in a flat state (round steel hooks of a heater are welded together, a cable wire inlet hole and a thermocouple temperature measuring hole are also completely processed), then heat insulation materials are sequentially installed and fixed layer by layer, and finally each furnace wall plate and the installed and fixed heat insulation materials are integrally hoisted; the gaps between the adjacent furnace wall plates are filled and plugged with heat insulation materials; the surface of the angle steel at the uppermost port of the furnace wall is also paved with heat-insulating materials.
(2) Installing a heat insulation material inside the furnace platform: after the furnace wallboard heat insulation material is completely installed, directly paving the heat insulation material in the furnace platform, and filling and plugging the edge with the heat insulation material.
(3) Installing a top cover heat insulation material: after the structural part of the top cover is processed, the top cover is reversely buckled and horizontally placed, then the welding anchoring nails are installed in the horizontally placed state, all layers of heat insulation materials are sequentially installed, the heat insulation materials are fixed layer by layer, and finally the top cover and the heat insulation materials are integrally turned over and hoisted.
In the spliced annealing heat treatment furnace, the joint of the resistance heater (6) is led to the outside of the furnace wall plate (3) through round steel to be connected with an annealing line; the resistance heater (6) is preset on the furnace wall plate (3), and the joint of the resistance heater is connected with the annealing line through the opening; all annealing lines and thermocouple temperature measuring point signal wires on the furnace body are respectively connected to the corresponding heat treatment control box terminal strips.
In the assembled annealing heat treatment furnace, the bottom of a furnace wallboard (3) is provided with two doors, heat insulation materials (5) are also paved on the inner sides of the doors, and the two doors are symmetrically arranged; a ladder stand with a protective cage is arranged outside the furnace wall and reaches the outside of the top cover (4).
According to the assembled annealing heat treatment furnace provided by the invention, the plate structures of the furnace platform, the upright posts and the wall plates are connected by bolts, the top cover is directly placed at the upper opening of the furnace cavity by means of dead weight, the furnace body structure is stable, the assembly and disassembly are convenient, and the furnace body can be recycled; the section of the furnace body is polygonal, and the shape of the furnace body can be changed according to the requirements of different batches of products; the design total height of the upright posts and the furnace wall plates can be changed according to the height requirements of different batches of products, and the furnace wall plates are built in a building block mode, so that the hearth meets the integral heat treatment requirement of the components; the electrified heater is used as a heat source, so that the heating is uniform during heat treatment, and the heat treatment effect is good. The construction of the heat treatment furnace is slightly influenced by the restriction of site space, and the heat treatment furnace has the advantages of no pollution, no waste gas emission, safety, environmental protection, recycling and material saving.
Claims (8)
1. An assembled annealing heat treatment furnace is characterized in that: the furnace comprises a furnace platform (1), a stand column (2), a furnace wallboard (3), a top cover (4), heat insulation materials (5) and a resistance heater (6), wherein the heat insulation materials (5) are paved on the inner wall surfaces of the furnace wallboard (3) and the top cover (4), the resistance heater (6) is arranged at the bottom of the furnace platform (1), the resistance heater (6) is also arranged on the furnace wallboard (3), and the resistance heater (6) is connected with a control box which is externally connected with a power supply through a cable.
2. The assembled annealing heat treatment furnace according to claim 1, wherein: the furnace platform (1) is formed by assembling a plurality of plate members, and each plate is formed by assembling and welding steel plates and section steel; channel steel (1-1) serving as a supporting piece and a reinforcing rib is arranged below the periphery of each plate member, steel plates (1-2) are arranged on the channel steel, two adjacent plates are connected into a whole through short angle steel (1-3) and bolt connecting pieces (1-4), and a plurality of connecting points are arranged at intervals; wherein, the furnace platen at the outermost side is not provided with angle steel connection points.
3. The assembled annealing heat treatment furnace according to claim 1, wherein: the upright column (2) comprises H-shaped steel and a column bottom plate, and the total height and the section size of the H-shaped steel are determined according to the height of a member needing heat treatment annealing; the H-shaped steel (2-2) is installed and welded on the furnace platform steel plate through the column bottom plate (2-1), and a flange plate on one side, facing the hearth, of the H-shaped steel (2-2) is provided with paired bolt holes in advance and used for installing and connecting furnace wall plates.
4. The assembled annealing heat treatment furnace according to claim 1, wherein: the furnace wall plate (3) and the upright post (2) are mutually connected to form a furnace wall of the heat treatment furnace; the left side and the right side of each furnace wall plate (3) are provided with long round holes and folded edges, and the furnace wall plates are connected with the upright posts (2) through bolts; the upper end and the lower end of the furnace wall plate (3) are welded with angle steel (3-2), and holes are formed in the angle steel and are connected with the furnace wall plate (3) at the upper part and the lower part through bolts; all the furnace wall plates (3) are connected well up and down and are connected with the upright posts (2) into a whole to form a heat treatment furnace using space, namely a hearth.
5. The assembled annealing heat treatment furnace according to claim 1, wherein: top cover (4): the furnace is formed by combining a steel plate and a section bar, the top cover (4) is a plane top cover or a conical top cover, and the external dimension of the top cover is larger than the dimension of an upper opening of a furnace chamber; the top of the top cover (4) is provided with a lifting lug and an exhaust hole.
6. The assembled annealing heat treatment furnace according to claim 1, wherein: the heat insulation material (5) is rock wool board and aluminum silicate refractory fiber, and the total thickness is not less than 200mm.
7. The assembled annealing heat treatment furnace according to claim 1, wherein: the joint of the resistance heater (6) is led to the outside of the furnace wall plate (3) through round steel to be connected with an annealing line; the resistance heater (6) is preset on the furnace wall plate (3), and the joint of the resistance heater is connected with the annealing line through the opening; all annealing lines and thermocouple temperature measuring point signal lines on the furnace body are respectively connected to the corresponding heat treatment control box terminal rows.
8. The assembled annealing heat treatment furnace according to claim 1, wherein: two doors are arranged at the bottom of the furnace wall plate (3), heat-insulating materials (5) are also laid on the inner sides of the doors, and the two doors are symmetrically arranged; a ladder stand with a protective cage is arranged outside the furnace wall and reaches the outside of the top cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211342718.XA CN115537533A (en) | 2022-10-31 | 2022-10-31 | Assembled annealing heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211342718.XA CN115537533A (en) | 2022-10-31 | 2022-10-31 | Assembled annealing heat treatment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115537533A true CN115537533A (en) | 2022-12-30 |
Family
ID=84718739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211342718.XA Pending CN115537533A (en) | 2022-10-31 | 2022-10-31 | Assembled annealing heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115537533A (en) |
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2022
- 2022-10-31 CN CN202211342718.XA patent/CN115537533A/en active Pending
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