A stainless steel surface matte treatment system and treatment method

Abstract

The invention discloses a stainless steel surface matte treatment system and a treatment method thereof, belonging to the technical field of stainless steel processing. In the traditional method of utilizing the material pitting formation mechanism, the invention utilizes a pair of sandblasting machines distributed up and down to spray etching sand material to the upper and lower end surfaces of a steel belt at intervals in front and back, thereby increasing the mechanical impact force and cooperating with vibration plates distributed up and down to realize that the etching sand material falling on the surface of the steel belt continuously vibrates on the formed corrosion pits, thereby accelerating the formation of the corrosion pits and deep corrosion, and the etching sand material on the steel belt falls into a sand material mixing structure during transmission, and during the rotation of the rotating sleeve, a plurality of mixing troughs are used for batch loading of the fallen etching sand material, and by monitoring the etching liquid proportions of the etching sand material twice before and after, an appropriate amount of liquid is replenished according to the monitoring result, so that the etching sand material after treatment can achieve an etching effect of recycling, and ensure that the etching effect of the same material before and after is consistent.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel processing, and more specifically to a stainless steel surface matte processing system and a processing method thereof. Background Art

[0002] Stainless steel strips are widely used in various industries for processing and manufacturing various products. The production and processing of stainless steel strips will involve surface matte treatment operations. The surface matte treatment is to reduce the gloss of the stainless steel surface by mechanical or chemical methods to make it present a matte or semi-matte appearance. This treatment can change the appearance of stainless steel, making it softer, low-key, and reducing reflections.

[0003] Sandblasting technology is now widely used to achieve matte treatment on the surface of stainless steel strips. It uses high-pressure spraying of sand or other media to impact the surface of the steel strip to remove the gloss on the surface of the steel strip and produce a matte effect.

[0004] After searching, the Chinese patent number CN108724014A discloses "a method and device for matte treatment of sand surface of material". This patent uses the formation mechanism of material pitting to accelerate the formation of pitting pits by making evenly distributed sand material hard particles continuously hit the material surface through mechanical impact force. At the same time, the etching liquid quickly corrodes these fresh pitting pits on the material surface to prepare a material surface hole structure with even distribution. However, the sand surface etching liquid used in this patent is reused under the action of a sludge pump, and the sand surface etching liquid will remain on the material surface when it is reciprocated and sprayed on the material. The etching liquid on the sand material will gradually be consumed, so it is difficult to ensure that the etching effect of the same material before and after remains consistent, and the problem of uneven surface roughness of the steel strip is prone to occur, resulting in poor matte effect.

[0005] Therefore, we propose a stainless steel surface matte processing system and processing method to address the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the existing problems. Compared with the existing technology, a stainless steel surface matte processing system and a processing method thereof are provided. A pair of sandblasting machines distributed up and down are used to spray etching sand materials to the upper and lower end surfaces of the steel belt at intervals in the front and back, so as to improve the mechanical impact force. At the same time, vibration plates distributed up and down are cooperated to realize that the etching sand materials falling on the surface of the steel belt continuously vibrate and act on the formed pits, so as to accelerate the formation of pits and deep corrosion. The etching sand materials on the steel belt fall into the sand material mixing structure during transmission. During the rotation of the rotating sleeve, a plurality of mixing troughs are used to load the fallen etching sand materials in batches. By monitoring the etching liquid proportions of the etching sand materials twice before and after, an appropriate amount of liquid is replenished according to the monitoring results, so that the etching sand materials after treatment can achieve the etching effect of recycling, and ensure that the etching effect of the same material before and after remains consistent.

[0007] The purpose of the present invention can be achieved by the following technical scheme: a stainless steel surface matte treatment system, comprising a conveying structure for conveying a steel strip and a pair of spray structures installed at the end of the conveying structure, two sandblasting machines distributed up and down are arranged on the conveying structure, and a sand material mixing structure located at the rear end of the sandblasting machine is also distributed on both sides of the conveying structure, the conveying structure comprises a reeling roller group and an upper guide roller distributed on the left and right, and a lower guide roller arranged in an up-and-down staggered manner with the upper guide roller is arranged below the reeling roller group;

[0008] The sand material mixing structure comprises an outer cylinder with a feeding port at the top, a fixed cylinder is installed in the axial direction of the outer cylinder, a rotating sleeve which is movably and sealedly connected with the inner wall of the outer cylinder is sleeved on the outer wall of the fixed cylinder, a motor which drives the rotating sleeve to rotate is installed at the end of the outer cylinder, and a plurality of mixing grooves which are open inside and outside are annularly opened on the end wall of the rotating sleeve;

[0009] A monitoring port 1 connected to the mixing tank is provided on one side of the upper end of the outer cylinder, an infrared camera 1 and a liquid replenishing tube 1 arranged toward the monitoring port 1 are installed on the outer cylinder, a monitoring port 2 connected to the mixing tank is provided on the bottom end wall of the fixed cylinder, an infrared camera 2 and a liquid replenishing tube 2 arranged toward the monitoring port 2 are installed inside the fixed cylinder, a feeding port connected to the mixing tank is provided on the lower end wall of the outer cylinder away from the infrared camera 1, and a plurality of vibration plates located between the monitoring port 1 and the feeding port are fixedly installed on the outer end wall of the outer cylinder.

[0010] Furthermore, the upper guide roller and the lower guide roller are composed of fixed disks and roller bodies installed between the fixed disks, and the unwinding roller group and the fixed disks on the upper guide roller and the fixed disks on the upper guide roller and the lower guide roller are connected through closing plates.

[0011] Furthermore, the outer end surfaces of the upper guide roller and the lower guide roller are provided with guide assemblies, which include a guide plate fixedly connected between a pair of fixed disks and with the lower end obliquely extending to the feed port, and the front and rear sides of the guide plate are fixedly connected with side plates that are attached to the outer edges of the fixed disks and are opposite to the upper end wall of the edge of the feed port.

[0012] Furthermore, the upper end surfaces of the upper guide roller and the lower guide roller are movably connected with vibration plates arranged flush with their transmission surfaces, and the other ends of the vibration plates distributed up and down extend horizontally to the bottom of the sandblasting machine corresponding to their positions.

[0013] Furthermore, a pair of spray structures are provided with a plurality of spray pipes, and the pair of spray structures are staggered and distributed on both sides of the steel belt up and down.

[0014] Furthermore, infrared camera 1 and infrared camera 2 are respectively vertically arranged above monitoring port 1 and monitoring port 2, and multiple infusion tubes 1 and 2 are provided, which are horizontally evenly distributed above monitoring port 1 and monitoring port 2. Infusion tube 1 and infusion tube 2 are respectively externally connected to liquid inlet pipes. According to actual needs, primary infusion and secondary infusion are performed by infusion tube 1 and infusion tube 2 respectively.

[0015] Furthermore, the matte processing system is also connected to a control panel with signals of infrared camera 1 and infrared camera 2 through wires, and the control panel includes a data acquisition unit, a data evaluation unit and a liquid replenishment control unit. The data acquisition unit is used to collect thermal infrared images of etching sand materials in the same mixing tank captured by infrared camera 1 and infrared camera 2 respectively according to a preset number of collections within a preset monitoring period, and send the collected thermal infrared images to the data evaluation unit;

[0016] The data evaluation unit obtains the color and temperature characteristics of the etching sand material on the infrared spectrum within the preset acquisition times according to the thermal infrared image, and uses the image segmentation algorithm to calculate the pixel ratio of the etching liquid and the sand material in the image to determine the ratio α1 and α 2、 α n , sum the proportions of etching solution and abrasive material and take the average, marked as α 均 , the preset proportion threshold and α 均 The difference calculation is performed to obtain the fluid replenishment rate β, and the fluid replenishment rate β is sent to the fluid replenishment control unit, and the fluid replenishment control unit performs a fluid replenishment operation according to the fluid replenishment rate β.

[0017] Further, the refilling operation process of the refilling control unit is as follows: after the refilling control unit obtains the refilling rate β of the etching sand material in the mixing tank at the monitoring station corresponding to the infrared camera 1, according to the total amount of etching sand material introduced into the mixing tank at a single time, through calculation, a proper amount of etching liquid is added into the mixing tank using multiple refilling pipes 1;

[0018] The etching sand material that is replenished with the etching liquid for the first time is mixed and stirred under the mechanical vibration of the vibrating plate. When it rotates to the monitoring station corresponding to the lower side of the infrared camera 2, the replenishment rate β of the etching sand material in the mixing tank corresponding to the infrared camera 2 is obtained. When the replenishment rate β reaches the standard, there is no need for secondary replenishment. When the replenishment rate β still does not reach the standard, a plurality of replenishment tubes are used to replenish an appropriate amount of etching liquid into the mixing tank for the second time. After the secondary replenishment, the etching sand material is mixed and stirred after the mechanical vibration of the vibrating plate.

[0019] The present invention also provides a method for matte treatment of stainless steel surface, comprising the following steps:

[0020] Step 1: The steel strip is conveyed by a conveying structure consisting of an unwinding roller group, an upper guide roller, a lower guide roller and a guide sleeve. A sandblasting machine located above sprays a fixed amount of etching sand material onto the upper end surface of the steel strip. The etching sand material is conveyed forward along with the steel strip and introduced into the first sand material mixing structure by the guide assembly.

[0021] Step 2: After the steel belt is guided by the upper guide roller, its upper and lower end faces are exchanged. At this time, a fixed amount of etching sand is sprayed to the other end face of the steel belt by the sandblasting machine below. The etching sand is transported forward with the steel belt and introduced into the second sand material mixing structure by the guide component.

[0022] Step 3: The steel strip is guided by the upper guide roller and then moves vertically downward through the guide sleeve. The spray structure located above sprays and cleans the first sandblasted side of the steel strip, and then the spray structure below sprays and cleans the second sandblasted side of the steel strip. The cleaned steel strip is subsequently dried to obtain a matte steel strip with uniform holes.

[0023] Step 4: In step 1 and step 2, after the etching sand material on the steel belt falls into the mixing tank from the feed port, the rotating sleeve is rotated and stepped forward one unit at a preset interval time, so that the weight of the etching sand material falling into each mixing tank is kept as consistent as possible;

[0024] When the mixing tank loaded with etching sand material rotates forward one unit to the monitoring station of the infrared camera, the etching sand material is vibrated by the vibration plate so that the upper end surface of the etching sand material is in a flat state, and then the vibration is stopped and the infrared camera is used to take pictures. During the process of several pictures, the vibration plate is intermittently opened and closed to obtain multiple infrared images;

[0025] The refill rate β is calculated and analyzed from multiple infrared images, and combined with the total amount of etching sand introduced into the mixing tank at a single time, a proper amount of etching liquid is added into the mixing tank through multiple refill tubes through calculation;

[0026] The etching sand material replenished with the etching liquid for the first time is mixed and stirred under the mechanical vibration of the vibrating plate. When it rotates to the monitoring station corresponding to the lower part of the infrared camera 2, the replenishment rate β of the etching sand material at that location is obtained in the same way. The replenishment tube 2 is regulated according to the replenishment rate β obtained for the second time to perform the replenishment operation and subsequent vibration stirring, and the material is discharged and reused when it rotates to the next station.

[0027] Compared with the prior art, the advantages of the present invention are:

[0028] (1) In the present scheme, a pair of sandblasting machines are arranged vertically to spray etching sand material onto the upper and lower end surfaces of the steel belt at intervals, thereby increasing the mechanical impact force and cooperating with vibration plates arranged vertically to realize that the etching sand material falling on the surface of the steel belt continuously vibrates on the formed pits, thereby accelerating the formation of pits and deep corrosion. When the steel belt is turned by the upper guide roller and the lower guide roller, the etching sand material on the steel belt falls into the sand material mixing structure. The multiple mixing troughs arranged on the rotating sleeve are used to load the fallen etching sand material in batches at equal time intervals. During the rotation of the rotating sleeve, the etching liquid ratio of the etching sand material is monitored twice before and after, and the liquid is replenished in an appropriate amount according to the monitoring result, so that the recycled etching sand material can achieve the standard etching effect, thereby ensuring that the etching effect of the same material before and after is consistent.

[0029] (2) In this scheme, infrared cameras and liquid replenishing tube matching structures are arranged in the front and rear directions of the rotating sleeve. During the intermittent rotation of the rotating sleeve toward the monitoring port, the etching sand in the same mixing tank is photographed by infrared camera 1 and infrared camera 2. The proportion of etching liquid is monitored based on infrared image analysis, and appropriate amount of liquid is replenished through liquid replenishing tube 1 and liquid replenishing tube 2 respectively according to the monitoring results. After the liquid replenishment, the etching sand is vibrated and stirred by the vibrating plate. On the one hand, the upper end surface of the etching sand tends to be flat in the later stage of vibration. On the other hand, the mixing effect of the etching sand is improved after acid is added, thereby improving the accuracy of secondary detection, so that the etching sand can achieve the etching effect of recycling after treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front structural schematic diagram of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the transmission structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the back structure of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the sand material mixing structure of the present invention;

[0034] Figure 5It is a schematic structural diagram of the outer cylinder and the rotating sleeve of the present invention when they are separated;

[0035] Figure 6 It is a structural schematic diagram of the present invention when the rotating sleeve and the positioning cylinder are separated;

[0036] Figure 7 The end section of the sand material mixing structure of the present invention is Figure 1 ;

[0037] Figure 8 The end section of the sand material mixing structure of the present invention is Figure 2 ;

[0038] Fig. 9 It is an end cross-sectional view of the sand material mixing structure of the present invention when the sealing valve plate is opened;

[0039] Fig.10 It is a cross-sectional view of the sand material mixing structure of the present invention when working.

[0040] Description of the numbers in the figure:

[0041] 1. Unwinding roller group; 2. Upper guide roller; 3. Lower guide roller; 4. Steel belt; 5. Sandblasting machine; 6. Closing plate; 7. Guide plate; 8. Sand material mixing structure; 81. Outer cylinder; 811. Feed port; 812. Monitoring port 1; 813. Drive plate; 814. Sealing valve plate; 815. Compression spring; 82. Rotating sleeve; 821. Mixing trough; 83. Fixed cylinder; 831. Monitoring port 2; 84. Infrared camera 1; 85. Liquid replenishing tube 1; 86. Vibrating plate; 87. Infrared camera 2; 88. Liquid replenishing tube 2; 9. Spraying structure; 10. Vibrating plate 1. DETAILED DESCRIPTION

[0042] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0043] Example 1: The present invention discloses a stainless steel surface matte treatment system, please refer to Figure 1-Figure 3, including a conveying structure for conveying a steel belt 4 and a pair of spray structures 9 installed at the end of the conveying structure, two sandblasting machines 5 distributed up and down are arranged on the conveying structure, and sand material mixing structures 8 located at the rear end of the sandblasting machines 5 are also distributed on both sides of the conveying structure, the conveying structure includes a reeling roller group 1 and an upper guide roller 2 distributed on the left and right, a lower guide roller 3 arranged alternately with the upper guide roller 2 is arranged below the reeling roller group 1, and a guide sleeve is provided on the side of the lower guide roller 3 close to the upper guide roller 2, and the sandblasting machines 5 distributed up and down are arranged alternately away from the upper guide roller 2 and the lower guide roller 3 respectively.

[0044] The upper guide roller 2 and the lower guide roller 3 are composed of a fixed disk and a roller body installed between the fixed disks. The unwinding roller group 1 and the fixed disk on the upper guide roller 2 and the fixed disks on the upper guide roller 2 and the lower guide roller 3 are connected through a closing plate 6. Closing plates 6 are added on both sides of the front and rear of the conveying structure. During the conveying process of the steel belt 4, the etching sand sprayed on the steel belt 4 is intercepted.

[0045] The etching sand material sprayed by the sandblasting machine 5 arranged above acts on the upper end surface of the steel belt 4 when it is initially conveyed. After being redirected by the upper guide roller 2, the etching sand material sprayed by the sandblasting machine 5 arranged below acts on the other end surface of the steel belt 4, so that the upper and lower end surfaces of the sandblasting machine 5 are both subjected to the sandblasting effect from front to back, thereby increasing the mechanical impact force and ensuring that the etching effect on the upper and lower end surfaces of the steel belt 4 is consistent;

[0046] The upper end surfaces of the upper guide roller 2 and the lower guide roller 3 are movably connected with a vibration plate 10 which is arranged flush with their transmission surfaces. The other ends of the vibration plates 10 distributed up and down extend horizontally to the bottom of the sandblasting machine 5 corresponding to their positions. The vibration plate 10 is connected to an external ultrasonic generator. An ultrasonic converter is also connected between the external ultrasonic generator and the vibration plate 10. The ultrasonic vibration is transmitted to the steel belt 4 in the transmission process through the vibration plate 10, so as to realize the continuous vibration of the etching sand falling on the surface of the steel belt 4 and act on the formed pits, thereby accelerating the formation of pits and deep corrosion.

[0047] The outer end faces of the upper guide roller 2 and the lower guide roller 3 are provided with guide components corresponding to the position of the sand material mixing structure 8, and the guide components include a guide plate 7 fixedly connected between a pair of fixed disks and with the lower end obliquely extending to the feed port 811, and the front and rear sides of the guide plate 7 are fixedly connected with side plates that are attached to the outer edges of the fixed disks and are opposite to the upper end walls of the edges of the feed port 811. The etching sand sprayed by the sandblasting machine 5 is then introduced into the sand material mixing structure 8 by the guide plate 7 for recovery during the transmission process with the steel belt 4.

[0048] A pair of spray structures 9 are provided with multiple spray pipes, and the pair of spray structures 9 are staggered up and down on both sides of the steel belt 4. During the transmission of the steel belt 4, the upper guide roller 2 and the lower guide roller 3 are used to guide the transmission to form a "Z" shape. After the steel belt 4 is sandblasted twice, it is guided by the guide sleeve and pulled downward in the vertical direction. At this time, the spray structure 9 located at the top sprays and cleans the side of the steel belt 4 that is sandblasted first, and the spray structure 9 located at the bottom sprays and cleans the side of the steel belt 4 that is sandblasted later. The pair of spray structures 9 are distributed at intervals up and down, which effectively achieves that the time of the residual etching liquid attached to the upper and lower end surfaces of the steel belt 4 remains consistent.

[0049] Embodiment 2: Based on Embodiment 1, this embodiment optimizes the sand material mixing structure 8 to achieve acid mixing of the collected etching sand material, as follows:

[0050] See also Figure 4-Figure 7 The sand material mixing structure 8 includes an outer cylinder 81 with a feed port 811 at the top, a fixed cylinder 83 is installed in the axial direction of the outer cylinder 81, and a rotating sleeve 82 movably sealed and connected with the inner wall of the outer cylinder 81 is sleeved on the outer wall of the fixed cylinder 83. A motor for rotating the rotating sleeve 82 is installed at the end of the outer cylinder 81. A plurality of mixing grooves 821 with openings inside and outside are annularly opened on the end wall of the rotating sleeve 82. The mixing grooves 821 are of a wide outer and narrow inner structure. The rotating sleeve 82 is rotated at the same interval time. The plurality of mixing grooves 821 are used for batch loading of fallen etching sand materials at equal time intervals.

[0051] See also Figure 7-10 A monitoring port 812 connected to the mixing tank 821 is provided on one side of the upper end of the outer cylinder 81, an infrared camera 84 and a liquid replenishing tube 85 arranged toward the monitoring port 812 are installed on the outer cylinder 81, a monitoring port 831 connected to the mixing tank 821 is provided on the bottom wall of the fixed cylinder 83, an infrared camera 87 and a liquid replenishing tube 88 arranged toward the monitoring port 831 are installed inside the fixed cylinder 83, the infrared camera 84 and the infrared camera 87 are respectively vertically arranged above the monitoring port 812 and the monitoring port 831, a plurality of liquid replenishing tubes 85 and 88 are provided, and are respectively horizontally evenly spaced above the monitoring port 812 and the monitoring port 831, and the liquid replenishing tube 85 and the liquid replenishing tube 88 are respectively connected to liquid inlet pipes;

[0052] The rotating sleeve 82 rotates intermittently toward the monitoring port 1 812. During this process, the etching abrasive material is monitored twice by infrared camera 1 84 and infrared camera 2 87. According to the monitoring results, appropriate amount of liquid is replenished through liquid replenishing tube 1 85 and liquid replenishing tube 2 88 respectively.

[0053] A feeding port connected to the mixing trough 821 is provided on the lower end wall of the outer cylinder 81 on the side away from the infrared camera 84. A plurality of vibration plates 86 located between the monitoring port 812 and the feeding port are fixedly installed on the outer end wall of the outer cylinder 81. The vibration plates 86 are also connected to an external ultrasonic generator and an ultrasonic converter, and transmit ultrasonic vibration to the mixing trough 821 between the monitoring port 812 and the feeding port through the outer cylinder wall. It should be noted that there are six mixing troughs 821 in this embodiment, and there are three vibration plates 86, which are respectively distributed below the bottom end of the outer cylinder 31 and on the outer wall of the outer cylinder 31 near the monitoring port 812. When the rotating sleeve 82 rotates one unit, the mixing trough 821 corresponds to the position of the vibration plates 86. In the absence of video, the vibration plates 86 are used to vibrate and stir the etching sand in the mixing trough 821.

[0054] A sealing valve plate 814 embedded in the material drop port is rotatably installed on the end wall of the outer cylinder 81, and a driving plate 813 is fixedly installed on the outer end wall of the outer cylinder 81. A plurality of compression springs 815 are passed on the inner wall of the driving plate 813. An electromagnetic plate is embedded and installed on the driving plate 813, and the sealing valve plate 814 is made of magnetic material. In the initial state, the sealing valve plate 814 seals at the material drop port. After the etching sand material after secondary treatment rotates to this place, the electromagnetic plate is started, and the sealing valve plate 814 flips outward to expose the material drop port, and the processed sand material is regulated to fall into the collection box.

[0055] Example 3: Based on Example 2, this example describes the process of monitoring fluid replenishment in detail, as follows:

[0056] The matte processing system is also connected to a control panel with signals of an infrared camera 1 84 and an infrared camera 2 87 through wires. The control panel includes a data acquisition unit, a data evaluation unit, and a liquid replenishment control unit. The data acquisition unit is used to collect thermal infrared images of etching sand materials in the same mixing tank 821 captured by the infrared camera 1 84 and the infrared camera 2 87 at a preset number of acquisitions within a preset monitoring period, and send the collected thermal infrared images to the data evaluation unit.

[0057] The data evaluation unit obtains the color and temperature characteristics of the etching sand material on the infrared spectrum within the preset acquisition times according to the thermal infrared image, and uses the image segmentation algorithm to calculate the pixel ratio of the etching liquid and the sand material in the image to determine the ratio α1 and α 2、 α n , sum the proportions of etching solution and abrasive material and take the average, marked as α 均 , the preset proportion threshold and α 均 The difference calculation is performed to obtain the fluid replenishment rate β, and the fluid replenishment rate β is sent to the fluid replenishment control unit, and the fluid replenishment control unit performs a fluid replenishment operation according to the fluid replenishment rate β.

[0058] The refilling operation process of the refilling control unit is as follows: first, after the refilling control unit obtains the refilling rate β of the etching sand material in the mixing tank 821 at the monitoring station corresponding to the infrared camera 84, according to the total amount of etching sand material introduced into the mixing tank 821 at a single time, through calculation, a proper amount of etching liquid is added into the mixing tank 821 using a plurality of refilling tubes 85;

[0059] The etching sand material that is replenished with the etching liquid for the first time is mixed and stirred under the mechanical vibration of the vibration plate 86. When it rotates to the monitoring station corresponding to the bottom of the infrared camera 87, the replenishment rate β of the etching sand material in the mixing tank 821 corresponding to the infrared camera 87 is obtained. When the replenishment rate β reaches the standard, there is no need for secondary replenishment. When the replenishment rate β still does not reach the standard, a plurality of replenishment tubes 88 are used to replenish an appropriate amount of etching liquid into the mixing tank 821 for the second time. After the secondary replenishment, the etching sand material is mixed and stirred after the mechanical vibration of the vibration plate 86.

[0060] According to embodiments 1, 2, and 3, the present invention further provides a method for matte treatment of a stainless steel surface, comprising the following steps:

[0061] Step 1: First, position the steel strip coil outside the unwinding roller group 1, and pull the steel strip 4 horizontally from the steel strip coil. The steel strip 4 is conveyed by the conveying structure composed of the unwinding roller group 1, the upper guide roller 2, the lower guide roller 3 and the guide sleeve. The free end of the steel strip 4 is uniformly pulled by the existing traction structure. The sandblasting machine 5 located above sprays a certain amount of etching sand material onto the upper end surface of the steel strip 4. The etching sand material is conveyed forward with the steel strip 4 and introduced into the first sand material mixing structure 8 by the guide assembly;

[0062] Step 2: After the steel belt 4 is guided by the upper guide roller 2, its upper and lower end faces are exchanged. At this time, a fixed amount of etching sand is sprayed to the other end face of the steel belt 4 by the sandblasting machine 5 located below. The etching sand is transported forward with the steel belt 4 and introduced into the second sand material mixing structure 8 by the guide assembly;

[0063] Step 3: The steel strip 4 is guided by the upper guide roller 2 and then moves vertically downward through the guide sleeve. The spray structure 9 located above sprays and cleans the first sandblasted side of the steel strip 4, and then the spray structure 9 below sprays and cleans the second sandblasted side of the steel strip 4. The cleaned steel strip 4 is subsequently dried to finally obtain a steel strip 4 with a matte and rough surface with uniform pores.

[0064] Step 4: In step 1 and step 2, after the etching sand material on the steel belt 4 falls into the mixing tank 821 from the feed port 811, the rotating sleeve 82 is rotated forward one unit at a preset interval time, so that the weight of the etching sand material falling into each mixing tank 821 is kept as consistent as possible;

[0065] When the mixing tank 821 equipped with the etching sand material rotates forward one unit and steps forward to the monitoring station of the infrared camera 84, the etching sand material is vibrated by the vibration plate 86 so that the upper end surface of the etching sand material is in a flat state, and then the vibration is stopped, and the infrared camera 84 is used to take pictures. During the process of several pictures, the vibration plate 86 is intermittently opened and closed to obtain multiple infrared images;

[0066] The refilling rate β is calculated and analyzed from multiple infrared images, combined with the total amount of etching sand introduced into the mixing tank 821 at a single time. The total amount of etching sand introduced into the mixing tank 821 at a single time is the total amount of etching sand sprayed by the sandblasting machine 5 when the rotating sleeve 82 is driven forward by one unit of time at a preset interval. Through calculation, a proper amount of etching liquid is replenished into the mixing tank 821 using multiple refilling tubes 85;

[0067] The etching sand material replenished with the etching liquid for the first time is mixed and stirred under the mechanical vibration of the vibration plate 86. When it rotates to the monitoring station corresponding to the bottom of the infrared camera 87, the replenishment rate β of the etching sand material at this location is obtained in the same way. When the replenishment rate β reaches the standard, there is no need for secondary replenishment. When the replenishment rate β still does not reach the standard, a plurality of replenishment tubes 88 are used to replenish an appropriate amount of etching liquid into the mixing tank 821 for the second time. After the secondary replenishment, the vibrating plate 86 is mechanically vibrated to mix and stir, and when it rotates to the next station, the material is discharged and reused.

[0068] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A stainless steel surface matte treatment system, comprising a conveying structure for conveying a steel strip (4) and a pair of spray structures (9) installed at the end of the conveying structure, characterized in that: The conveying structure is provided with two sandblasting machines (5) arranged vertically, and a sand material mixing structure (8) is also arranged on both sides of the conveying structure and located at the rear end of the sandblasting machine (5). The conveying structure comprises an unwinding roller group (1) and an upper guide roller (2) arranged horizontally, and a lower guide roller (3) arranged vertically and staggered with the upper guide roller (2) is provided below the unwinding roller group (1); The sand material mixing structure (8) comprises an outer cylinder (81) with a feeding port (811) at the top, a fixed cylinder (83) is installed in the axial direction of the outer cylinder (81), a rotating sleeve (82) movably and sealingly connected to the inner wall of the outer cylinder (81) is sleeved on the outer wall of the fixed cylinder (83), a motor for rotating the rotating sleeve (82) is installed at the end of the outer cylinder (81), and a plurality of mixing grooves (821) with both inner and outer openings are annularly opened on the end wall of the rotating sleeve (82); A monitoring port (812) connected to the mixing tank (821) is provided on one side of the upper end of the outer cylinder (81), and an infrared camera (84) and a liquid replenishing tube (85) are installed at the monitoring port (812); a monitoring port (831) connected to the mixing tank (821) is provided on the bottom end wall of the fixed cylinder (83), and an infrared camera (87) and a liquid replenishing tube (88) are installed at the monitoring port (831); a material drop port connected to the mixing tank (821) is provided on the lower end wall of the outer cylinder (81) away from the infrared camera (84); and a plurality of vibration plates (86) are fixedly installed on the outer end wall of the outer cylinder (81) and located between the monitoring port (812) and the material drop port; The matte processing system is also connected to a control panel with signals of an infrared camera 1 (84) and an infrared camera 2 (87) through a wire, and the control panel includes a data acquisition unit, a data evaluation unit and a liquid replenishment control unit, wherein the data acquisition unit is used to respectively acquire thermal infrared images of etching sand materials in the same mixing tank (821) captured by the infrared camera 1 (84) and the infrared camera 2 (87) at a preset acquisition number within a preset monitoring period, and send the acquired thermal infrared images to the data evaluation unit; The data evaluation unit obtains the color and temperature characteristics of the etching sand material on the infrared spectrum within the preset acquisition times according to the thermal infrared image, and uses the image segmentation algorithm to calculate the pixel ratio of the etching liquid and the sand material in the image to determine the ratio α1 and α 2、 α n , sum the proportions of etching solution and abrasive material and take the average, marked as α 均 , the preset proportion threshold and α 均 Perform difference calculation to obtain a fluid replenishment rate β, and send the fluid replenishment rate β to a fluid replenishment control unit, which performs a fluid replenishment operation according to the fluid replenishment rate β; The refilling operation process of the refilling control unit is as follows: after the refilling control unit obtains the refilling rate β of the etching sand material in the mixing tank (821) at the monitoring station corresponding to the infrared camera 1 (84), according to the total amount of etching sand material introduced into the mixing tank (821) at a single time, the refilling control unit calculates and uses a plurality of refilling tubes 1 (85) to add an appropriate amount of etching liquid into the mixing tank (821); The etching sand material that is first replenished with etching liquid is mixed and stirred under the mechanical vibration of the vibration plate (86). When it rotates to the monitoring station corresponding to the lower side of the infrared camera (87), the replenishment rate β of the etching sand material in the mixing tank (821) corresponding to the infrared camera (87) is obtained. When the replenishment rate β reaches the standard, there is no need for secondary replenishment. When the replenishment rate β still does not reach the standard, a plurality of replenishment tubes (88) are used to replenish an appropriate amount of etching liquid into the mixing tank (821) for the second time. After the secondary replenishment, the etching sand material is mixed and stirred after the mechanical vibration of the vibration plate (86).

2. A stainless steel surface matte treatment system according to claim 1, characterized in that: The upper guide roller (2) and the lower guide roller (3) are both composed of fixed disks and roller bodies installed between the fixed disks, and the unwinding roller group (1) and the fixed disks on the upper guide roller (2) and the fixed disks on the upper guide roller (2) and the lower guide roller (3) are all connected via a closing plate (6).

3. A stainless steel surface matte treatment system according to claim 1, characterized in that: The outer end surfaces of the upper guide roller (2) and the lower guide roller (3) are both provided with guide assemblies, and the guide assemblies include a guide plate (7) fixedly connected between a pair of fixed disks and with the lower end extending obliquely to the feed port (811), and the front and rear sides of the guide plate (7) are both fixedly connected with side plates that are attached to the outer edges of the fixed disks and are in contact with the upper end wall of the edge of the feed port (811).

4. A stainless steel surface matte treatment system according to claim 1, characterized in that: The upper end surfaces of the upper guide roller (2) and the lower guide roller (3) are movably connected with a vibration plate (10) arranged flush with their transmission surfaces, and the other ends of the vibration plates (10) distributed up and down extend horizontally to the bottom of the sandblasting machine (5) corresponding to their positions.

5. The stainless steel surface matte treatment system according to claim 1, characterized in that: A pair of the spray structures (9) are provided with a plurality of spray pipes, and the pair of spray structures (9) are staggered and distributed on both sides of the steel belt (4) up and down.

6. The stainless steel surface matte treatment system according to claim 1, characterized in that: The infrared camera 1 (84) and the infrared camera 2 (87) are respectively vertically arranged above the monitoring port 1 (812) and the monitoring port 2 (831). There are multiple infusion tubes 1 (85) and 2 (88), which are horizontally evenly spaced above the monitoring port 1 (812) and the monitoring port 2 (831).

7. A method for treating a stainless steel surface with matte finish, using a stainless steel surface with matte finish treatment system as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: The steel strip (4) is conveyed by a conveying structure composed of an unwinding roller group (1), an upper guide roller (2), a lower guide roller (3) and a guide sleeve, and a sandblasting machine (5) located above sprays a fixed amount of etching sand material onto the upper end surface of the steel strip (4). The etching sand material is conveyed forward along with the steel strip (4) and is guided into the first sand material mixing structure (8) by the guide assembly; Step 2: After the steel belt (4) is guided by the upper guide roller (2), its upper and lower end faces are exchanged. At this time, a fixed amount of etching sand is sprayed onto the other end face of the steel belt (4) by the sandblasting machine (5) below. The etching sand is transported forward along with the steel belt (4) and introduced into the second sand material mixing structure (8) by the guide assembly; Step 3: The steel strip (4) is guided by the upper guide roller (2) and then moves vertically downward through the guide sleeve. The spray structure (9) located above sprays and cleans the first sandblasted side of the steel strip (4). The spray structure (9) located below sprays and cleans the second sandblasted side of the steel strip (4). The cleaned steel strip (4) is subsequently dried to obtain a steel strip (4) with a matte sand surface and uniform pores. Step 4: In step 1 and step 2, after the etching sand material on the steel belt (4) falls into the mixing tank (821) from the feed port (811), the rotating sleeve (82) is rotated to step forward one unit at a preset interval, so that the weight of the etching sand material falling into each mixing tank (821) is kept as consistent as possible; When the mixing tank (821) loaded with etching sand material rotates forward one unit and steps forward to the monitoring station at the infrared camera 1 (84), the etching sand material is vibrated by the vibration plate (86) so that the upper end surface of the etching sand material is in a flat state, and then the vibration is stopped and the infrared camera 1 (84) is used to take pictures. During the process of taking pictures several times, the vibration plate (86) is intermittently opened and closed to obtain multiple infrared images; The refill rate β is calculated and analyzed from a plurality of infrared images, and combined with the total amount of etching sand introduced into the mixing tank (821) at a single time, a proper amount of etching liquid is added into the mixing tank (821) through a plurality of refill tubes (85); The etching sand material that is replenished with etching liquid for the first time is mixed and stirred under the mechanical vibration of the vibration plate (86). When it rotates to the monitoring station corresponding to the lower side of the infrared camera 2 (87), the replenishment rate β of the etching sand material at that location is obtained in the same way. The replenishment tube 2 (88) is regulated according to the replenishment rate β obtained for the second time to perform the replenishment operation and subsequent vibration stirring, and the material is discharged and reused when it rotates to the next station.

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