CN109385519B - Modular installation method of aluminum ingot pushing type heating furnace - Google Patents

Abstract

The invention relates to the field of installation of industrial heating furnaces, in particular to a modular installation method of an aluminum ingot pushing type heating furnace; the method is characterized in that: welding stainless steel anchors of a top plate and a side wall plate; laying heat insulation cotton on the top plate and the side wall plate; assembling and assembling the heating furnace modules; turning over the module; the module is slid into place. The construction method effectively solves a series of technical problems that the heating furnace assembly site is compact, the weight of the single body is heavy after module assembly, the heating furnace cannot be hoisted by a crane, the workload of rivet welding and heat insulation cotton laying is large, the process is complicated, and the like, efficiently and orderly completes the heating furnace installation project, ensures the progress and safety of project construction, saves the construction period, improves the working efficiency, obtains good social and economic benefits, and has wide applicability.

Description

Modular installation method of aluminum ingot pushing type heating furnace

Technical Field

The invention relates to the field of installation of industrial heating furnaces, in particular to a modular installation method of an aluminum ingot pushing type heating furnace.

Background

With the wider application of aluminum materials, the aluminum materials become important basic materials in the production process; an aluminum ingot pushing type heating furnace is one of key production processes in the production process of an aluminum plate strip; the aluminum plate strip ingot pushing type heating furnace has the main functions of heating an aluminum ingot, providing raw materials for a subsequent hot rolling process, and directly influencing the quality of a subsequent hot rolled plate by controlling the heating temperature of the plate strip.

The heating furnace system equipment mainly comprises a furnace front part, a furnace body and a furnace rear part, wherein the heating furnace body is divided into a top plate, a bottom plate and side walls for supplying parts, the furnace body is divided into 4-6 sections and needs to be assembled on site and then installed, the equipment and components have large overall dimensions, the weight of each section of the assembled furnace body is about 33-40 t, and the assembled furnace body is installed below a plant column of a main rolling span and a heating furnace span, the site arrangement is compact, the furnace body can not be directly hoisted in place by a plant crane, and the hoisting difficulty is large; the top plate, the bottom plate and the side wall of the furnace body are all insulated by heat insulation cotton, the heat insulation cotton is generally 8 layers, the heat insulation cotton is fixed by stainless steel anchor nails and needs to be welded on site, the rivet welding and heat insulation cotton laying procedures are complicated, and the welding workload is large.

Disclosure of Invention

The invention aims to overcome the defects and provide an economical, quick and effective ingot pushing type heating furnace modularization installation method.

In order to achieve the above object, the present invention is realized by:

a modular installation method of an aluminum ingot pushing type heating furnace comprises the steps of

Step 1, welding stainless steel anchors of a top plate and a side wall plate: before the rivet welding, a supporting frame is erected, a furnace plate is leveled, and the furnace plate is horizontally lifted to be placed, so that the thermocouple tube is not influenced; then adopting an anchoring gun to weld or adopting a stainless steel welding rod to weld the ground anchor;

step 2, laying heat preservation cotton on the top plate and the side wall plate: the furnace body heat insulation cotton is of a multilayer structure, in order to ensure the heat insulation sealing performance, when the furnace body heat insulation cotton is paved, a layer is transverse, a layer is longitudinal, every 2 layers are paved and fixed by a clamp, every 2 layers form a step shape, and the step length is 50 mm; after the layer 4 is laid, a layer of aluminum foil with the thickness of 10mm needs to be laid, and the aluminum foil needs to be overlapped by 100mm at the joint; the laying is to ensure that each layer is heat-insulated, flat, neat and compacted;

step 3, assembling and assembling heating furnace modules: the off-line assembly of the modules is carried out by adopting a cross-travelling crane of the heating furnace, and the specific overweight steps are as follows:

step 3.1, firstly, flatly placing the furnace roof on a sleeper for leveling;

step 3.2, mounting the two side plates, aligning the side plates with the top plate according to corresponding marks of the side plates and the top plate, and adjusting the verticality, the opening degree and the diagonal of the side plates, wherein the adjustment error meets the regulation of the specification;

step 3.3, assembling a heating furnace bottom plate;

step 3.4, furnace shell welding: full welding is adopted on the inner side and the outer side, and the quality of the welding seam is in accordance with the specification of a design file;

step 3.5, welding the module turning lifting lug,

Step 3.6, reinforcing the module: in order to prevent the module from deforming in the hoisting process, four corners at two sides of the module are fixed by adopting channel steel, and the middle of the module is fixed by two channel steel;

step 4, turning over the module: after the module is assembled, a factory building crane and two 25t truck cranes are adopted to turn over the module, the turning-over is carried out in two steps, the turning-over is carried out for 90 degrees firstly and then for 90 degrees, and the whole module achieves an installation state after the turning-over is carried out for 180 degrees;

step 5, sliding the module in place:

step 5.1, manufacturing a welding module position temporary support on the side wall of the module;

step 5.2, placing sliding racks and sliding rails on two sides of the module mounting position, wherein the sliding racks and the sliding rails are made of 16# I-steel, and paving phi 100 × 10 sliding rails on the sliding rails;

step 5.3, hoisting the module onto a sliding rail, leveling, and dragging the module to an installation position by a winch;

and 5.4, placing 4 jacks of 10t under the temporary support of the module, vertically jacking the module, taking out the sliding rail and the sliding rack, allowing the jacks to fall down, and placing the module on the basis of the installation position.

The construction method effectively solves a series of technical problems that the heating furnace assembly site is compact, the weight of the single body is heavy after module assembly, the heating furnace cannot be hoisted by a crane, the workload of rivet welding and heat insulation cotton laying is large, the process is complicated, and the like, efficiently and orderly completes the heating furnace installation project, ensures the progress and safety of project construction, saves the construction period, improves the working efficiency, obtains good social and economic benefits, and has wide applicability.

Drawings

Fig. 1 is a schematic diagram of a module in a sliding position.

Fig. 2 is a schematic diagram of the sliding position of the module.

Detailed Description

The invention is further illustrated by the following specific examples.

A modular installation method of an aluminum ingot pushing type heating furnace comprises the steps of

Step 1, welding stainless steel anchors of a top plate and a side wall plate: before the rivet welding, a supporting frame is erected, a furnace plate is leveled, and the furnace plate is horizontally lifted to be placed, so that the thermocouple tube is not influenced; then adopting an anchoring gun to weld or adopting a stainless steel welding rod to weld the ground anchor;

step 2, laying heat preservation cotton on the top plate and the side wall plate: the furnace body heat insulation cotton is of a multilayer structure, in order to ensure the heat insulation sealing performance, when the furnace body heat insulation cotton is paved, a layer is transverse, a layer is longitudinal, every 2 layers are paved and fixed by a clamp, every 2 layers form a step shape, and the step length is 50 mm; after the layer 4 is laid, a layer of aluminum foil with the thickness of 10mm needs to be laid, and the aluminum foil needs to be overlapped by 100mm at the joint; the laying is to ensure that each layer is heat-insulated, flat, neat and compacted;

step 3, assembling and assembling heating furnace modules: the off-line assembly of the modules is carried out by adopting a cross-travelling crane of the heating furnace, and the specific overweight steps are as follows:

step 3.1, firstly, flatly placing the furnace roof on a sleeper for leveling;

step 3.2, mounting the two side plates, aligning the side plates with the top plate according to corresponding marks of the side plates and the top plate, and adjusting the verticality, the opening degree and the diagonal of the side plates, wherein the adjustment error meets the regulation of the specification;

step 3.3, assembling a heating furnace bottom plate;

step 3.4, furnace shell welding: full welding is adopted on the inner side and the outer side, and the quality of the welding seam is in accordance with the specification of a design file;

step 3.5, welding the module turning lifting lug,

Step 3.6, reinforcing the module: in order to prevent the module from deforming in the hoisting process, four corners at two sides of the module are fixed by adopting channel steel, and the middle of the module is fixed by two channel steel;

step 4, turning over the module: after the module is assembled, a factory building crane and two 25t truck cranes are adopted to turn over the module, the turning-over is carried out in two steps, the turning-over is carried out for 90 degrees firstly and then for 90 degrees, and the whole module achieves an installation state after the turning-over is carried out for 180 degrees;

step 5, as shown in fig. 1 and 2, the module slides in place:

step 5.1, manufacturing a welding module positioning temporary support 3 on the side wall of the module;

step 5.2, placing a sliding rack 1 and a sliding rail 2 on two sides of the module installation position, wherein the sliding rack 1 and the sliding rail 2 are made of 16# I-steel, and paving a phi 100 × 10 sliding rail on the rail;

step 5.3, hoisting the module onto the sliding rail 2, leveling, and dragging the module to the installation position by a winch;

and 5.4, placing four 10t jacks 4 under the temporary support of the module, vertically jacking the module, taking out the sliding rail 2 and the sliding rack 1, and allowing the jacks 4 to fall down to place the module on the basis of the installation position.

The construction method effectively solves a series of technical problems that the heating furnace assembly site is compact, the weight of the single body is heavy after module assembly, the heating furnace cannot be hoisted by a crane, the workload of rivet welding and heat insulation cotton laying is large, the process is complicated, and the like, efficiently and orderly completes the heating furnace installation project, ensures the progress and safety of project construction, saves the construction period, improves the working efficiency, obtains good social and economic benefits, and has wide applicability.

Claims (1)

1. A modular installation method of an aluminum ingot pushing type heating furnace is characterized by comprising the following steps: comprises that

Step 1, welding stainless steel anchors of a top plate and a side wall plate: before the rivet welding, a supporting frame is erected, a furnace plate is leveled, and the furnace plate is horizontally lifted to be placed, so that the thermocouple tube is not influenced; then adopting an anchoring gun to weld or adopting a stainless steel welding rod to weld the ground anchor;

step 2, paving heat-insulating cotton on the top plate and the side wall plate: the furnace body heat insulation cotton is of a multilayer structure, in order to ensure the heat insulation sealing performance, when the furnace body heat insulation cotton is paved, a layer is transverse, a layer is longitudinal, every 2 layers are paved and fixed by a clamp, every 2 layers form a step shape, and the step length is 50 mm; after the layer 4 is laid, a layer of aluminum foil with the thickness of 10mm needs to be laid, and the aluminum foil needs to be overlapped by 100mm at the joint; the laying is to ensure that each layer is heat-insulated, flat, neat and compacted;

step 3, assembling and assembling heating furnace modules: the method comprises the following steps of performing module offline assembly by adopting a cross-travelling crane of the heating furnace, wherein the specific operation steps are as follows:

step 3.1, firstly, flatly placing the furnace roof on a sleeper for leveling;

step 3.2, mounting the two side plates, aligning the side plates with the top plate according to corresponding marks of the side plates and the top plate, and adjusting the verticality, the opening degree and the diagonal of the side plates, wherein the adjustment error meets the regulation of the specification;

step 3.3, assembling a heating furnace bottom plate;

step 3.4, furnace shell welding: full welding is adopted on the inner side and the outer side, and the quality of the welding seam is in accordance with the specification of a design file;

step 3.5, welding the module turning lifting lug,

Step 3.6, reinforcing the module: in order to prevent the module from deforming in the hoisting process, four corners at two sides of the module are fixed by adopting channel steel, and the middle of the module is fixed by two channel steel;

step 4, turning over the module: after the module is assembled, a factory building crane and two 25t truck cranes are adopted to turn over the module, the turning-over is carried out in two steps, the turning-over is carried out for 90 degrees firstly and then for 90 degrees, and the whole module achieves an installation state after the turning-over is carried out for 180 degrees;

step 5, sliding the module in place:

step 5.1, manufacturing a welding module position temporary support on the side wall of the module;

step 5.2, placing sliding racks and sliding rails on two sides of the module mounting position, wherein the sliding racks and the sliding rails are made of 16# I-steel, and paving phi 100 × 10 sliding rails on the sliding rails;

step 5.3, hoisting the module onto a sliding rail, leveling, and dragging the module to an installation position by a winch;

and 5.4, placing 4 jacks of 10t under the temporary support of the module, vertically jacking the module, taking out the sliding rail and the sliding rack, allowing the jacks to fall down, and placing the module on the basis of the installation position.

Images