Efficient multipurpose coil pickling line equipment

Abstract

The utility model relates to efficient multipurpose coil pickling line equipment, and belongs to the technical field of coil pickling. Comprising a first feeding station and a first discharging station, and a demolding and pickling unit is arranged between the first feeding station and the first discharging station; a first feeding station is arranged at an outlet of the first discharging station, a second feeding station is arranged at an outlet of the first discharging station, a lime / phosphorus saponification coating unit is arranged at an outlet of the second feeding station, a second discharging station is arranged at an outlet of the lime / phosphorus saponification coating unit, and the first feeding station and the second discharging station are adjacently arranged to form annular pickling line equipment. The production efficiency of the pickling line is improved; on the same pickling line, the pickling process and the coating process are carried out at the same time, and the requirements of various products are met.

Description

Technical Field

[0001] The utility model relates to a high-efficiency multi-purpose coil pickling line equipment, belonging to the technical field of coil pickling. Background Art

[0002] The common pickling line loading mechanism and unloading mechanism are respectively arranged at the head and tail, loading from one end and unloading from the other end after the process is completed. Because the pickling, lime coating and phosphate saponification coating processes need to pass through different tanks, when executing a certain process, the transport trolley needs to carry the wire rod to walk in the tunnel. In the tank to be immersed, the transport trolley immerses the coil into the tank through the lifting action. However, if it is not necessary to immerse in the tank, the transport trolley will carry the wire rod to do invalid walking in the tunnel. On the one hand, the invalid walking affects the production efficiency. On the other hand, the wire rod is easily oxidized when exposed to the air and affects the product quality. For example, in the pickling process, it only needs to go through the loading mechanism → pickling tank → water washing tank → high-pressure water washing tank → water washing tank → light lime tank → drying equipment → unloading mechanism. The coil will do invalid walking on the surface adjustment tank, phosphating tank, water washing tank, neutralization tank and saponification tank, affecting the production efficiency. Usually, the pickling line only has one lime tank and one saponification tank. When doing the pickling process, the main function of the lime tank is to neutralize the residual acid on the surface. Only a small amount of lime needs to be added to neutralize the residual acid on the surface. When doing the lime coating, a certain lime concentration needs to be guaranteed so that enough lime can be adsorbed on the surface of the material to facilitate the subsequent wire drawing lubrication. When there is only one lime tank, most manufacturers tend to adopt the latter method of configuring a certain concentration of lime to simultaneously meet the neutralization of the pickling process and the role of lime coating, but the impact is that a large amount of lime on the surface of the pickling material adheres to the surface, affecting the atmosphere of the next annealing furnace and causing decarburization, and after long-term production, the lime powder blocks the annealing furnace pipeline, resulting in abnormal production. The pickling line has only one saponification tank, which is difficult to meet the requirements of a variety of products. For example, bearing steel requires a lower saponification concentration to avoid the impact of soap powder on the customer's workshop environment after wire drawing, while cold heading steel requires a higher saponification concentration and needs to have a higher lubrication effect to meet the customer's subsequent large deformation cold heading. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-efficiency multi-purpose coil pickling line equipment for the above-mentioned prior art, so as to improve the production efficiency of the pickling line; on the same pickling line, the pickling process and the coating process can be carried out simultaneously to meet the requirements of various products.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problems is: a high-efficiency multi-purpose coil pickling line equipment, including a first loading station and a first unloading station, a demolding pickling unit is arranged between the first loading station and the first unloading station; a second loading station is arranged at the outlet of the first unloading station, a lime / phosphorus saponification coating unit is arranged at the outlet of the second loading station, a second unloading station is arranged at the outlet of the lime / phosphorus saponification coating unit, the first loading station and the second unloading station are arranged adjacent to each other to form a ring-shaped pickling line equipment.

[0005] A plurality of transport trolleys are also provided, and the transport trolleys are arranged on tracks.

[0006] The number of the transport carts is greater than 15.

[0007] The stripping and pickling unit includes a first degreasing tank, a second rinsing tank, a first hot dipping tank, a plurality of stripping and pickling tanks, a first dipping tank, a first high-pressure water washing tank, a second dipping tank, a first lime tank and a first drying tunnel which are arranged in sequence.

[0008] The lime / phosphorus saponification coating unit includes three lime / phosphorus saponification coating pickling tanks, a second high-pressure water washing tank, a first sulfuric acid tank, a third leaching tank, a second hot leaching tank, a first surface conditioning tank, two phosphating tanks, a fourth leaching tank, a fifth leaching tank, a first neutralization tank, a first saponification tank, a second lime tank, a first yellow flower tank, a third lime tank, a second saponification tank, and two drying boxes arranged in sequence.

[0009] Compared with the prior art, the advantages of the utility model are: a highly efficient and multi-purpose coil pickling line equipment, which realizes the simultaneous production and offline of the pickling process and the coating process, ensures the timely feeding of the next annealing process and the wire drawing process, greatly improves the production efficiency, and increases the capacity of the annular pickling line; and can simultaneously meet the pickling, lime, and phosphorus saponification coating process production, and meet the requirements of various products. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a workstation layout diagram of a high-efficiency multi-purpose coil pickling line equipment according to an embodiment of the utility model;

[0011] Figure 2 This is a schematic diagram of an efficient and multi-purpose coil pickling line equipment according to an embodiment of the utility model;

[0012] In the figure, 1 is the first loading station, 2 is the first degreasing tank, 3 is the first rinsing tank, 4 is the first hot dipping tank, 5 is the first stripping pickling tank, 6 is the second stripping pickling tank, 7 is the third stripping pickling tank, 8 is the first dipping tank, 9 is the first high-pressure water washing tank, 10 is the second dipping tank, 11 is the first lime tank, 12 is the first drying tunnel, 13 is the first unloading station, 14 is the second loading station, 15 is the first lime / phosphorus saponification coating pickling tank, 16 is the second lime / phosphorus saponification coating pickling tank, 17 is the third lime / phosphorus saponification coating pickling tank, Coating pickling tank, 18 second high-pressure water washing tank, 19 first sulfuric acid tank, 20 third leaching tank, 21 second hot leaching tank, 22 first surface conditioning tank, 23 first phosphating tank, 24 second phosphating tank, 25 fourth leaching tank, 26 fifth leaching tank, 27 first neutralization tank, 28 first saponification tank, 29 second lime tank, 30 first yellowing tank, 31 third lime tank, 32 second saponification tank, 33 first drying box, 34 second drying box, 35 second unloading station, 36 transport trolley. DETAILED DESCRIPTION

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0014] like Figure 1 , 2 As shown, in this embodiment, a highly efficient and multi-purpose coil pickling line equipment comprises a first loading station 1 and a first unloading station 13, and a stripping pickling unit is provided between the first loading station 1 and the first unloading station 13. A second loading station 14 is provided at the outlet of the first unloading station 13, and a lime / phosphorus saponification coating unit is provided at the outlet of the second loading station 14, and a second unloading station 35 is provided at the outlet of the lime / phosphorus saponification coating unit. The first loading station 1 and the second unloading station 35 are arranged adjacent to each other, thereby forming a ring-shaped pickling line equipment. The stripping pickling unit is used to remove the oxide scale on the surface of the coil, to facilitate the next annealing, to reduce decarburization caused by the oxide scale, and to perform stripping pickling treatment on materials with grease on the surface; the lime / phosphorus saponification coating unit can perform pickling process, lime coating process and phosphorus saponification coating process, to facilitate the subsequent process of wire drawing and finished product wire drawing.

[0015] The pickling line equipment also has a plurality of transport trolleys 36, and the number of the transport trolleys 36 is greater than 15, thereby avoiding the occurrence of waiting for material loading due to insufficient transport trolleys and improving production efficiency.

[0016] The above-mentioned demolding pickling unit includes a first degreasing tank 2, a first rinsing tank 3, a first hot dipping tank 4, three demolding pickling tanks (a first demolding pickling tank 5, a second demolding pickling tank 6 and a third demolding pickling tank 7), a first leaching tank 8, a first high-pressure water rinsing tank 9, a second leaching tank 10, a first lime tank 11 and a first drying tunnel 12 which are arranged in sequence.

[0017] The transport trolley 36 moves the coil from the first loading station 1 to a designated tank in the stripping and pickling unit via a track.

[0018] The transport path of the transport trolley 36 during the pickling process is the first loading station→three stripping pickling tanks→the first immersion tank→the first high-pressure water washing tank→the second immersion tank→the first lime tank→the first drying tunnel→the first unloading station.

[0019] The transport route of the transport trolley during the demolding and pickling process is the first loading station → the first degreasing tank → the first rinsing tank → the first hot dipping tank → three demolding and pickling tanks → the first dipping tank → the first high-pressure water washing tank → the second dipping tank → the first lime tank → the first drying tunnel → the first unloading station.

[0020] The above-mentioned lime / phosphorus saponification coating unit includes three lime / phosphorus saponification coating pickling tanks (a first lime / phosphorus saponification coating pickling tank 15, a second lime / phosphorus saponification coating pickling tank 16, and a third lime / phosphorus saponification coating pickling tank 17) arranged in sequence, a second high-pressure water washing tank 18, a first sulfuric acid tank 19, a third leaching tank 20, a second hot leaching tank 21, a first surface conditioning tank 22, two phosphating tanks (a first phosphating tank 23 and a second phosphating tank 24), a fourth leaching tank 25, a fifth leaching tank 26, a first neutralization tank 27, a first saponification tank 28, a second lime tank 29, a first yellow flower tank 30, a third lime tank 31, a second saponification tank 32, and two drying boxes (a first drying box 33 and a second drying box 34).

[0021] After unloading at the first unloading station, the transport trolley 36 continues to move along the track to the second loading station 14, and after loading another coil, according to the process instruction requirements, the transport trolley moves the coil from the second loading station to the designated slot in the lime / phosphorus saponification coating unit.

[0022] The transport path of the transport trolley during the pickling process is the second loading station → three lime / phosphorus saponification coating pickling tanks → the second high-pressure water washing tank → the first sulfuric acid tank → the third immersion tank → the second hot immersion tank → the third lime tank → the first drying box or the second drying box → the second unloading station.

[0023] The transport path of the transport trolley during the lime coating process is the second loading station → three lime / phosphorus saponification coating pickling tanks → the second high-pressure water washing tank → the first sulfuric acid tank → the third leaching tank → the second hot leaching tank → the second lime tank → the first drying box or the second drying box → the second unloading station.

[0024] The transport route of the transport trolley during the phosphate saponification coating process is the second loading station → three lime / phosphate saponification coating pickling tanks → the second high-pressure water washing tank → the first sulfuric acid tank → the third immersion tank → the second hot immersion tank → the first surface conditioning tank → the first phosphating tank or the second phosphating tank → the fourth immersion tank → the fifth immersion tank → the first neutralization tank → the first saponification tank or the second saponification tank → the first drying box or the second drying box → the second unloading station.

[0025] The above pickling tanks and sulfuric acid tanks must have heating functions: the maximum heating temperature does not exceed 60°C. Phosphating tanks, saponification tanks and lime tanks all have heating functions, and the maximum heating temperature does not exceed 90°C. Surface conditioning tanks and neutralization tanks all have heating functions, and the maximum heating temperature does not exceed 60°C. The heating temperature of drying ovens and drying tunnels does not exceed 150°C.

[0026] The first and third lime tanks are equipped with low-concentration calcium hydroxide, with a concentration of 0.025% to 0.25%; the second lime tank is equipped with high-concentration calcium hydroxide, with a concentration of 5% to 60%. The first and third lime tanks are used in the pickling process, and their main function is to neutralize the residual hydrochloric acid on the surface. The second lime tank is used in the lime coating process, and its main function is to make the lime powder adsorbed on the coil surface for subsequent wire drawing.

[0027] The first saponification tank is equipped with low-concentration saponification liquid, the concentration of which is controlled at 0.8% to 1.6%, and the second saponification tank is equipped with high-concentration saponification liquid, the concentration of which is controlled at 1.6% to 3.5%. The low-concentration saponification liquid in the first saponification tank is used for products with low lubrication requirements and less drawing wire powder requirements, such as conventional bearing steel products; the high-concentration saponification liquid in the second saponification tank is used for products with high lubrication requirements, such as cold heading steel products.

[0028] The above pickling line is usually set up in a closed tunnel, equipped with a fan and acid mist treatment device to reduce acid mist in the workshop and meet environmental protection requirements.

[0029] This application can not only realize the simultaneous production and offline of the pickling process and the coating process, ensure the timely feeding of the next annealing process and the wire drawing process, greatly improve the production efficiency, and increase the capacity of the circular pickling line; but also can simultaneously meet the production of pickling, lime, and phosphorus saponification coating processes to meet the requirements of various products.

[0030] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A highly efficient and multi-purpose coil pickling line equipment, characterized by: It includes a first loading station and a first unloading station, a stripping pickling unit is arranged between the first loading station and the first unloading station; a second loading station is arranged at the outlet of the first unloading station, a lime / phosphorus saponification coating unit is arranged at the outlet of the second loading station, a second unloading station is arranged at the outlet of the lime / phosphorus saponification coating unit, and the first loading station and the second unloading station are arranged adjacent to each other to form a circular pickling line equipment.

2. The high-efficiency multi-purpose coil pickling line equipment according to claim 1 is characterized in that: A plurality of transport trolleys are also provided, and the transport trolleys are arranged on tracks.

3. The high-efficiency multi-purpose coil pickling line equipment according to claim 2 is characterized in that: The number of the transport carts is greater than 15.

4. The high-efficiency multi-purpose coil pickling line equipment according to claim 1 is characterized in that: The stripping and pickling unit includes a first degreasing tank, a second rinsing tank, a first hot dipping tank, a plurality of stripping and pickling tanks, a first dipping tank, a first high-pressure water washing tank, a second dipping tank, a first lime tank and a first drying tunnel which are arranged in sequence.

5. The high-efficiency multi-purpose coil pickling line equipment according to claim 1 is characterized in that: The lime / phosphorus saponification coating unit includes three lime / phosphorus saponification coating pickling tanks, a second high-pressure water washing tank, a first sulfuric acid tank, a third leaching tank, a second hot leaching tank, a first surface conditioning tank, two phosphating tanks, a fourth leaching tank, a fifth leaching tank, a first neutralization tank, a first saponification tank, a second lime tank, a first yellow flower tank, a third lime tank, a second saponification tank, and two drying boxes arranged in sequence.

Images