CN117025931A - Strip steel production line and method - Google Patents

Abstract

The application discloses a strip steel production line and a strip steel production method, wherein equipment comprises a heat source, wherein the heat source is arranged on a production channel communicated with each process section, and the heat source provides heat for a hot baking area above the production channel. The equipment and the method can effectively avoid occurrence of white spots and rust, reduce the generation of unqualified products, reduce the production and subsequent treatment cost, and improve the production efficiency and the economic benefit.

Description

Strip steel production line and method

Technical Field

The present application relates toStrip steel productionTechnical field especially relates to a strip steel production line and method.

Background

The strip steel production process is required to pass through a plurality of process sections, process grooves matched with corresponding processes are arranged in some process sections, certain temperature requirements are met for controlling solution parameters in the process grooves, partial water vapor floats upwards due to the influence of seasonal change temperature difference, the water vapor is condensed in the floating process due to the influence of environmental factors, and water drops drop to the strip steel plate after condensation, so that the surface of the steel plate generates a speckle defect, and some processes fail.

Disclosure of Invention

The present application has been made in view of the above problems, and it is an object of the present application to provide a strip steel production line and a method which overcome or at least partially solve the above problems.

In a first aspect, there is provided a strip steel production line comprising: the heat source is arranged on a production channel communicated with each process section, and the heat source provides heat for a heat baking area above the production channel.

Optionally, the heat source is a heating plate.

Optionally, a plurality of separated hot baking areas are arranged above the production channel, and the heating plate is installed in the hot baking areas.

Optionally, the hot-baking zone is located above the process section, or the hot-baking zone is located outside the process section.

Optionally, the process section is provided with a process groove, a groove cover is arranged above the process groove, the hot baking area is positioned below the groove cover, and the heat source is arranged at the lower end of the groove cover.

Optionally, the process section comprises an electroplating process section, a fluxing process section and a passivation process section, and the process tank comprises an electroplating tank, a fluxing tank and a passivation tank.

Optionally, the heat source is slidably mounted above the production channel.

Optionally, a sliding rail is installed above the production channel and is communicated with each process section, and the heat source is in sliding connection with the sliding rail.

In a second aspect, a method for producing a strip steel is provided, comprising: the strip steel to be processed sequentially passes through a plurality of process sections arranged on the production channel to be processed by corresponding processes;

and drying the strip steel passing through the hot drying area above the line channel by a heat source arranged on the production channel.

Optionally, the method further comprises:

determining hidden trouble points on the production channel; the hidden danger points are occurrence points of the strip steel defects;

determining a hot baking area above the hidden danger point;

and installing the heat source in the hot baking area.

The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages:

according to the strip steel production line and method provided by the embodiment of the application, the heat source is arranged above the production channels communicated with each process section, so that the steel strip passing through the drying area is dried, condensed water is prevented from falling on the steel plate, white spots and rust are avoided, and more stable production quality of the steel strip is achieved. The method is simple and easy to implement, the hot baking area is planned and the heat source is installed at the position where white spots and rust easily occur on the production channel, and the technology and operators only need to operate according to the specified steps to implement the scheme of the application at the position where hidden danger is found, so that the method has strong operability and practicability. The generation of white spots and rust can be effectively avoided, and the generation of unqualified products is reduced, so that the production and subsequent treatment cost can be reduced, the production efficiency and economic benefit are improved, the heating position can be adjusted at any time according to the production experience although electric energy is used for heating, and the electric energy cost is low.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic diagram of a belt steel production line in an embodiment of the present application;

FIG. 2 is a schematic diagram of a second belt steel production line in accordance with an embodiment of the present application;

FIG. 3 is a flow chart of a method for producing strip steel in accordance with an embodiment of the present application.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

Various structural schematic diagrams according to embodiments of the present disclosure are shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and relative sizes, positional relationships between them shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.

In order to better understand the above technical solutions, the following detailed description will be made with reference to specific embodiments, and it should be understood that the embodiments of the present disclosure and specific features in the embodiments are detailed descriptions of the technical solutions of the present disclosure, and not limiting the technical solutions of the present disclosure, and the technical features in the embodiments and embodiments of the present disclosure may be combined with each other without conflict.

The application provides a strip steel production line, please refer to fig. 1, fig. 1 is a schematic diagram of a strip steel production line in an embodiment of the application, which comprises: the heat source 1 is arranged on a production channel 3 communicated with each process section 2, and the heat source 1 provides heat for a heat baking area 4 above the production channel 3.

The detailed scheme of the present embodiment will be described in detail with reference to fig. 2 in conjunction with examples.

Taking a tin plate as an example, the tin plate is a food packaging material with wide application, and has the advantages of corrosion resistance, freshness preservation and the like. However, in the production process, there are many factors that affect the quality of the tin plate, one of which is the generation and dripping of water vapor, which drips on the steel plate due to the influence of environmental factors such as temperature, humidity, etc., to form white spots and rust phenomena, thereby affecting the product quality and market competitiveness. Therefore, how to control the cause of white spots and rust due to dripping of tin plate becomes a urgent problem to be solved.

The tinning plate is widely applied to the field of food packaging, and is the most commonly used metal material for food contact. However, because the electroplating solution, the cosolvent, the passivation solution and other liquids are used in the production process, certain temperature requirements are required for controlling the parameters of the solutions, and the fluxing tank and the passivation tank are not tightly sealed before reflow and after reflow of the electrotinning production line due to the influence of seasonal variation temperature difference, part of water vapor floats. However, the reason for generating water vapor is many in the production process due to the influence of environmental factors, and if the water vapor is condensed in the floating process, the condensed water drops to the steel plate. On one hand, during reflow, the temperature of the steel plate at the water drop is lower than the reflow temperature due to volatilization and heat absorption of the water drop, so that the reflow of the tin layer is failed, and the surface is provided with a speckle defect; in time, the defects are not obvious or are not easily perceived, and water drops exist to oxidize and rust the steel plate at the corresponding position. On the other hand, the dripping of the water drops on the steel plate after the reflow is finished can cause the generation of a large patch, and a solution must be found for controlling the white patch and the rust caused by the dripping of the tin plate because of the extremely easy temperature difference in the production environment. The prior measures are mainly to strengthen sealing in a process section 2 which is extremely easy to generate water vapor, such as a shielding plate arranged above a steel belt, so as to prevent condensed water from falling on the steel belt. But it was found later that water droplets were also produced, causing defects. Mainly because of sealed lid and shielding plate, there is the difference in temperature, and humidity is big, all can produce the possibility of defect.

In order to avoid defects, the technical scheme of the application is adopted to improve tinning plate production equipment and method, and a heat source 1 is arranged on a production channel 3 communicated with each process section 2, and the heat source 1 provides heat for a heat drying area 4 above the production channel 3.

As an alternative embodiment, the process section is provided with a process tank, a tank cover 5 is arranged above the process tank, and dust is prevented by the tank cover 5. Specifically, the heating and baking area 4 is located below the tank cover 5, the heat source 1 is mounted at the lower end of the tank cover 5, and the tank cover 5 can also prevent heat from being dissipated.

As an alternative embodiment, the heat source 1 is a heating plate, for example a PTC ceramic thermostatic heating plate. The PTC ceramic constant temperature heating plate is arranged in the heating area to control the temperature, so that the uniformity and the stability of the internal temperature of the production equipment are ensured. The PTC ceramic constant temperature heating plate has the advantages of uniform heating, good insulativity, rapid heating and high heat efficiency, and is energy-saving, environment-friendly, small in volume and flexible in application. In addition, the PTC ceramic constant temperature heating plate is arranged in the device, so that the problem of condensation water drops caused by temperature difference between the sealing cover and the shielding plate can be effectively avoided.

As an alternative embodiment, a plurality of separated hot-baking areas 4 are arranged above the production channel 3, and the heating plate is installed on the hot-baking areas 4. Specifically, as shown in fig. 1, the hot bake zone 4 is located above the process section 2 or outside the process section 2. The heating plate is arranged in the area where white spots and rust are easy to generate, the heating position can be adjusted at any time according to production experience, and the electric energy cost is low.

Specifically, the process section 2 in the tinning plate production process comprises an electroplating process section, a fluxing process section and a passivation process section, wherein the process section comprises an electroplating bath, a fluxing bath and a passivation bath, that is to say, the electroplating process section is provided with the electroplating bath, the fluxing process section is provided with the fluxing bath, and the passivation process section is provided with the passivation bath. According to the technical characteristics of temperature parameter setting of each solution in tinning plate production, the temperature is controlled to 80 ℃, so that the generation of condensed water can be prevented, and the problems of water vapor, white spots, rust and the like are effectively avoided. Through production practice, the uniformity and stability of the solution temperature in the tin plate production are improved, the temperature change in the equipment is controlled, the problems of water vapor, white spots, rust and the like can be effectively avoided, and the specific control means is that the temperature difference can not be regulated to be more than 1 ℃ each time, and the regulation interval is not less than 1 hour.

As an optional implementation manner, the heat source 1 is slidably mounted above the production channel 3, and in the tin plate production process, due to the influence of seasonal variation temperature difference, white spots and rusts of the steel strip are different in positions, which are easy to cause dripping, in different time periods, the heat source 1 is slid to the position, which is easy to generate water vapor, according to needs, so that the heating position can be adjusted at any time, and one heat source corresponds to the heating of a plurality of process sections. Specifically, as shown in fig. 2, a slide rail 6 is installed above the production channel 3 and is connected to each process section 2, and the heat source 1 is slidably connected to the slide rail 6. When the heat source 1 adopts a heating plate, the heating plate slides on different process sections of the production channel 3 through the sliding rail, so that flexible heating is performed. The advantage of a sliding connection is that the heat source 1 does not have to be mounted on the tank cover 5 of each process section, which reduces the cost and is relatively suitable for flexible heating of several process sections 2 on the same horizontal line.

Based on the same inventive concept, the embodiment of the application also provides a strip steel production method, please refer to fig. 3, fig. 3 is a flowchart of the strip steel production method in the embodiment of the application, which includes:

the strip steel to be processed sequentially passes through a plurality of process sections 2 arranged on the production channel 3 to be processed by corresponding processes;

and drying the strip steel passing through the hot drying area 4 above the channel by a heat source 1 arranged on the production channel 3.

Specifically, the method further comprises:

determining hidden trouble points on the production channel 3; the hidden danger points are occurrence points of the strip steel defects;

a hot baking area 4 is determined above the hidden danger point;

the heat source 1 is installed in the baking area 4.

The occurrence point of the strip steel defect is the hidden trouble point of the defect that the strip steel is easy to be corroded by water vapor in the production process to generate white spots, rust and the like, and the heating positions are adjusted by electrifying heating plates at different hidden trouble points, so that the occurrence of the white spots and the rust is flexibly and effectively avoided, the generation of unqualified products is reduced, the production and subsequent treatment cost is reduced, the production efficiency and the economic benefit are improved, and the electric energy cost is low.

Taking tin plate production as an example, the specific strip steel production operation is as follows:

1. the PTC ceramic constant temperature heating plate is added at the top end or the shielding plate in the strip steel production equipment, and the uniformity and the stability of the temperature in the equipment or at the top of the shielding plate are controlled.

2. According to the temperature parameter setting process characteristics of each solution in the production of the tinning plate, the temperature is controlled to be not more than 80 ℃, and the uniformity and stability of the temperature inside the equipment or at the top of the shielding plate are maintained.

3. After the problem occurs, analyzing the water drop generating position, and additionally installing the PTC ceramic constant temperature heating plate.

4. The conditions of parts such as a sealing cover and a shielding plate in the equipment are checked regularly, and cleaning and maintenance are carried out.

The PTC ceramic constant temperature heating plate is installed as follows:

1. the shape area of the top end or the shielding plate inside the device is different, the size and the number of the PTC ceramic constant temperature heating plates are reasonably distributed, the structure is designed, the uniform heating is ensured, and no dripping dead angle is generated.

2. The required amount of screws are prepared and pre-installed at the four corners of the heating plate.

3. The PTC ceramic constant temperature heating plate is placed on the required installation position, and alignment and accurate position are ensured.

4. The heating plate is fixed by using a screw hole which is arranged on the heating plate in advance. The screws on the two diagonal lines are screwed first, all other screws are screwed respectively, and attention is paid not to be too tight when the screws are fastened, so that the damage caused by the impact of the heating plate is prevented.

5. And connecting a heating plate power supply, and testing whether the switch is normal. If the test is abnormal, the test can be used.

It should be noted that the installation of the PTC ceramic constant temperature heating plate requires careful operation to avoid the collision damage during the installation process, and also needs to prevent the damage or loosening of the power line.

6. Reasonable wiring is hidden at the hot plate back, prevents to influence hot plate heating function, needs perforation lead wire position, needs to be wired after, seals. Preventing air ventilation at the lead hole.

The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages:

according to the strip steel production line and method provided by the embodiment of the application, the heat source is arranged above the production channels communicated with each process section, so that the steel strip passing through the drying area is dried, condensed water is prevented from falling on the steel plate, white spots and rust are avoided, and more stable production quality of the steel strip is achieved. The method is simple and easy to implement, the hot baking area is planned and the heat source is installed at the position where white spots and rust easily occur on the production channel, and the technology and operators only need to operate according to the specified steps to implement the scheme of the application at the position where hidden danger is found, so that the method has strong operability and practicability. The generation of white spots and rust can be effectively avoided, and the generation of unqualified products is reduced, so that the production and subsequent treatment cost can be reduced, the production efficiency and economic benefit are improved, the heating position can be adjusted at any time according to the production experience although electric energy is used for heating, and the electric energy cost is low.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed application requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.

Claims (10)

1. The strip steel production line is characterized by comprising a heat source, wherein the heat source is arranged on a production channel communicated with each process section, and the heat source provides heat for a hot baking area above the production channel.

2. The strip line of claim 1, wherein the heat source is a heating plate.

3. The strip production line of claim 2, wherein a plurality of separate hot-bake zones are provided above the production tunnel, the heating plate being mounted to the hot-bake zones.

4. The strip line of claim 1, wherein the hot bake zone is located above the process section or the hot bake zone is located outside the process section.

5. The strip steel production line of claim 1 or 4, wherein the process section is provided with a process tank, a tank cover is arranged above the process tank, the hot baking area is positioned below the tank cover, and the heat source is arranged at the lower end of the tank cover.

6. The strip steel production line of claim 5, wherein the process section comprises an electroplating process section, a fluxing process section, and a passivation process section, and the process tank comprises an electroplating tank, a fluxing tank, and a passivation tank.

7. The strip production line of claim 1, wherein the heat source is slidably mounted over the production channel.

8. The strip steel production line of claim 7, wherein a slide rail is installed above the production channel and is communicated with each process section, and the heat source is in sliding connection with the slide rail.

9. A method of producing a strip steel, comprising:

the strip steel to be processed sequentially passes through a plurality of process sections arranged on the production channel to be processed by corresponding processes;

and drying the strip steel passing through the hot drying area above the line channel by a heat source arranged on the production channel.

10. The strip production method of claim 9, further comprising:

determining hidden trouble points on the production channel; the hidden danger points are occurrence points of the strip steel defects;

determining a hot baking area above the hidden danger point;

and installing the heat source in the hot baking area.