Water jet cutter gap adjusting integral pressing strip for quenching thin steel plate

Abstract

The utility model discloses a water jet cutter gap adjusting integral pressing strip for quenching a thin steel plate, and relates to the technical field of quenching water jet cutters. The water jet cutter comprises a water jet cutter body, a pressing strip body and two tool carbon steel plates, a water outlet groove is formed in the water jet cutter body, an upper fixing edge and a lower arc-shaped edge are arranged at the positions, above and below the water outlet groove, of the water jet cutter body respectively, the length of the pressing strip body is consistent with that of the water outlet groove, the pressing strip body is a 316TI stainless steel plate, and a plurality of first installation openings are linearly formed in the pressing strip body. By designing the integral stainless steel seam depression bar, the problem that the splicing seam of a three-section type seam depression bar is difficult to adjust to be completely matched is solved, the phenomenon of quenching pressure water bifurcation at the seam is eliminated, the installation time is shortened, repeated testing is not needed, the hardness of the nozzle depression bar is improved, pits caused by bumping are reduced, and the service life of the nozzle depression bar is prolonged. The production capacity is also effectively guaranteed, and the quenching quality of the steel plate is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of quenching water jets, in particular to an integral pressure strip for adjusting the gap of a water jet used for quenching thin steel plates. Background Art

[0002] The process flow of thin steel plate quenching is that the steel plate enters a roller-type continuous heat treatment furnace to be heated to a quenching temperature of about 920°C, and then quickly exits the furnace and enters a roller-type quenching machine to quench the hot steel plate to meet the process requirements of the structural properties and plate shape of the steel plate after quenching.

[0003] Because the thin steel plate is sprayed with a certain pressure of water flow and uniform water flow in the form of laminar flow through the quenching water jet slit nozzle during quenching, the steel plate moves at a constant speed on the roller after heating, and the pressurized water sprayed by the upper and lower water jets through the slit nozzle on the width of the steel plate is achieved by rapid cooling to achieve the purpose of quenching. If the amount of quenching pressure water is inconsistent locally in the width direction of the thin steel plate, the local hardness of the steel plate surface after quenching will be inconsistent and the plate shape will also bend, which will directly affect the quality of the quenched steel plate.

[0004] The quenching water jet of the thin steel plate quenching machine adopts the form of gap-type continuous jet of pressurized water. The gap strip for adjusting the gap of the water jet is long and thin (3400×59×26), so it is difficult to achieve the high requirements of precision and straightness through conventional machining, and is forced to be made into three sections spliced ​​into a whole.

[0005] In actual use, due to the presence of a small amount of impurities in the circulating water quality, the water jet gaps are often blocked, and it is necessary to frequently disassemble and install the three-section gap strips. When installing the three-section gap strips, it is difficult to achieve a complete match and seamless joint at the joints of one section of the gap strips, or the corners of the joints will be damaged due to multiple disassembly and assembly, and seamless joints cannot be achieved. As long as there is a gap of more than 0.1, it will cause the water flow to bifurcate, and then the quenching hardness of the quenched steel plate surface along the length direction of the steel plate at the bifurcation is about HB50 lower than the unbranched surface, and local curvature will occur, which will directly affect the quality of the quenched steel plate and cause the finished steel plate to be unqualified.

[0006] At the same time, when installing the three-section gap molding, due to the small space, the installers curled up to adjust the joints of the three-section gap molding, and could not judge whether the adjustment was correct in time. They could only observe whether there was local water flow bifurcation on the 3400mm wide waterfall surface through water testing. Therefore, repeated adjustments were required, which took a long time to be barely feasible, which would seriously affect production capacity. Utility Model Content

[0007] The utility model aims to provide an integral water jet gap adjustment strip for quenching thin steel plates. By designing an integral stainless steel gap strip, the problem that the joints of three-section gap strips are difficult to adjust to a perfect fit is solved, the phenomenon of water bifurcation due to quenching pressure at the joints is eliminated, the installation time is shortened and repeated testing is not required, the hardness of the nozzle strip is improved, the pits caused by bumps are reduced, the production capacity is effectively guaranteed, and the quality of steel plate quenching is guaranteed.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model discloses an integrated pressure strip for adjusting the gap of a water knife used for quenching a thin steel plate, comprising a water knife body, a pressure strip body and two tooling carbon steel plates, wherein the water knife body is provided with a water outlet groove, and the water knife body is provided with an upper fixed edge and a lower arc edge at positions above and below the water outlet groove respectively;

[0010] The length of the layering body is consistent with the length of the water outlet trough. The layering body is a 316TI stainless steel plate. The layering body is linearly provided with a plurality of first installation openings, and the first installation openings are through-openings that penetrate the layering body in the thickness direction.

[0011] The length of the tooling carbon steel plate is consistent with the length of the layering body, and the tooling carbon steel plate is provided with a plurality of tooling openings that match the first installation opening;

[0012] When the strip body is processed, the two tooling carbon steel plates are respectively fixed to the two side surfaces of the strip body through the tooling opening, the first mounting opening and the fasteners, and the lower surface of the strip body exceeds the tooling carbon steel plate and forms the side to be ground;

[0013] When the layering strip body is installed on the water jet body, a water jet gap is formed between the lower surface of the layering strip body and the lower arc-shaped edge.

[0014] Furthermore, a plurality of second installation openings are linearly opened on the upper surface of the pressure strip body, and the second installation openings are blind opening structures.

[0015] Furthermore, the first mounting openings and the second mounting openings are vertically distributed, and a number of the first mounting openings and a number of the second mounting openings are staggered.

[0016] Furthermore, a plurality of third mounting openings are provided on the upper fixed edge, and the plurality of third mounting openings are respectively concentric with the plurality of second mounting openings on the pressure strip body.

[0017] Furthermore, a plurality of fourth mounting openings are linearly provided on the water jet body near the upper fixed edge, and the plurality of fourth mounting openings are respectively concentric with the plurality of first mounting openings.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model designs an integral stainless - steel gap strip, which solves the problem that it is difficult to adjust the splicing joints of the three - section gap strip to be completely aligned, eliminates the phenomenon of quenching pressure water bifurcation at the joints, shortens the installation time and does not require repeated testing, improves the hardness of the nozzle strip, reduces the pits caused by bumps, effectively guarantees the production capacity, and ensures the quality of steel plate quenching.

[0020] 2. Through the design of the tooling carbon steel plate in the utility model, during the processing of the strip body, tooling carbon steel plates are installed on both sides of the strip body, enabling the electromagnetic chuck of the workpiece on the grinding machine to hold the tooling, solving the problem that stainless steel has no magnetism and cannot be processed on the grinding machine, and also solving the problem that the stainless - steel gap strip is slender and easy to deform during the grinding process.

[0021] Of course, it is not necessary for any product implementing the utility model to achieve all the above - mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of an integral strip for adjusting the water - jet gap for quenching thin steel plates of the utility model;

[0024] Figure 2 It is a schematic structural diagram of the strip body;

[0025] Figure 3 It is a schematic structural diagram after the connection of the strip body and the tooling carbon steel plate;

[0026] Figure 4 It is a schematic structural diagram of the existing three - section strip body;

[0027] In the drawings, the list of components represented by each reference numeral is as follows:

[0028] 1 - water - jet body, 2 - strip body, 3 - tooling carbon steel plate, 101 - water outlet groove, 102 - upper fixed edge, 103 - lower arc edge, 104 - third installation port, 105 - fourth installation port, 201 - first installation port, 202 - second installation port, 301 - tooling port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0030] Please refer to Figures 1-3 As shown in the figure, the present invention is an integral pressing strip for adjusting the water knife gap for quenching thin steel plates, including a water knife body 1, a pressing strip body 2 and two tooling carbon steel plates 3. The water knife body 1 is provided with a water outlet groove 101, and an upper fixing edge 102 and a lower arc edge 103 are respectively provided on the water knife body 1 at positions above and below the water outlet groove 101;

[0031] The length of the pressing strip body 2 is the same as the length of the water outlet groove 101. The pressing strip body 2 is a 316TI stainless steel plate member, and a number of first installation openings 201 are linearly provided on the pressing strip body 2. The first installation openings 201 are through openings penetrating the thickness direction of the pressing strip body 2;

[0032] The length of the tooling carbon steel plate 3 is the same as the length of the pressing strip body 2, and a number of tooling openings 301 are provided on the tooling carbon steel plate 3 to cooperate with the first installation openings 201;

[0033] When the pressing strip body 2 is processed, the two tooling carbon steel plates 3 are respectively fixed on both side surfaces of the pressing strip body 2 through the tooling openings 301, the first installation openings 201 and fasteners, and the lower surface of the pressing strip body 2 extends beyond the tooling carbon steel plate 3 to form a side to be ground;

[0034] When the pressing strip body 2 is installed on the water knife body 1, a water knife gap is formed between the lower surface of the pressing strip body 2 and the lower arc edge 103.

[0035] Among them, as Figures 2-3 shown, a number of second installation openings 202 are linearly formed on the upper surface of the pressing strip body 2, and the second installation openings 202 are blind hole structures.

[0036] Among them, as Figures 2-3 shown, the first installation openings 201 and the second installation openings 202 are vertically distributed, and the positions of a number of first installation openings 201 and a number of second installation openings 202 are offset.

[0037] Among them, as Figure 1 shown, a number of third installation openings 104 are provided on the upper fixing edge 102, and a number of third installation openings 104 are respectively concentric with a number of second installation openings 202 on the pressing strip body 2.

[0038] Among them, as Figure 1As shown, several fourth mounting openings 105 are linearly provided on the water jet body 1 near the upper fixed edge 102, and the several fourth mounting openings 105 are concentric with the several first mounting openings 201 respectively.

[0039] The production process of the pressing strip body 2 of the present utility model is as follows:

[0040] Select an integral pressing strip body 2 made of 316Ti material, and perform a solution heat treatment process on this material. Due to the addition of titanium element and solution treatment of the material, its heating temperature is 1020°C - 1120°C and it is rapidly air-cooled to room temperature, with a hardness of HRB ≤ 90, a tensile strength of ≥ 550 MN / m2, and a yield strength of ≥ 200 MN / m2. The 316Ti material has better heat resistance and corrosion resistance, avoiding heat deformation and water quality erosion;

[0041] First, rough machine the blank of the pressing strip body 2 with a milling machine, leaving a finishing allowance of 1 mm;

[0042] Then, drill the pressing strip body 2 after rough machining. At the same time, make two ordinary tooling carbon steel plates 3, clamp the pressing strip body 2 with bolts, and place it on a special grinding machine to grind the pressing strip body 2 to the required size, and the surface finish reaches 0.8;

[0043] Finally, polish the pressing strip body 2 with a manual hand-held polishing machine, and select wool as the material of the polishing disc, so that the surface finish of the pressing strip body 2 reaches 0.4 to meet the use requirements.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0045] The above-disclosed preferred embodiments of the present utility model are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can understand and utilize the present utility model well. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An integral pressure strip for adjusting the gap of a water jet used for quenching thin steel plates, characterized in that: The invention comprises a water knife body (1), wherein the water knife body (1) is provided with a water outlet groove (101), and the water knife body (1) is provided with an upper fixed edge (102) and a lower arc edge (103) at positions above and below the water outlet groove (101), respectively. The invention is characterized in that: it also comprises a layering body (2) and two tooling carbon steel plates (3); The length of the layering body (2) is consistent with the length of the water outlet groove (101); the layering body (2) is a 316TI stainless steel plate; a plurality of first installation openings (201) are linearly arranged on the layering body (2); the first installation openings (201) are through openings that penetrate the layering body (2) in the thickness direction; The length of the tooling carbon steel plate (3) is consistent with the length of the layering body (2), and the tooling carbon steel plate (3) is provided with a plurality of tooling openings (301) that match the first installation openings (201); When the strip body (2) is being processed, the two tooling carbon steel plates (3) are respectively fixed to the two side surfaces of the strip body (2) through the tooling opening (301), the first mounting opening (201) and the fasteners, and the lower surface of the strip body (2) exceeds the tooling carbon steel plates (3) and forms a side to be ground; When the layering body (2) is installed on the water jet body (1), a water jet gap is formed between the lower surface of the layering body (2) and the lower arc-shaped edge (103).

2. The integrated water jet gap adjustment strip for thin steel plate quenching according to claim 1, characterized in that: A plurality of second installation openings (202) are linearly opened on the upper surface of the layering body (2), and the second installation openings (202) are blind opening structures.

3. The integrated water jet gap adjustment strip for thin steel plate quenching according to claim 2, characterized in that: The first mounting openings (201) and the second mounting openings (202) are distributed vertically, and a plurality of the first mounting openings (201) and a plurality of the second mounting openings (202) are staggered in position.

4. The integrated water jet gap adjustment strip for thin steel plate quenching according to claim 2, characterized in that: The upper fixed edge (102) is provided with a plurality of third mounting openings (104), and the plurality of third mounting openings (104) are respectively concentric with the plurality of second mounting openings (202) on the layering body (2).

5. The integrated water jet gap adjustment strip for thin steel plate quenching according to claim 1, characterized in that: A plurality of fourth mounting openings (105) are linearly provided on the water jet body (1) near the upper fixed edge (102), and the plurality of fourth mounting openings (105) are respectively concentric with the plurality of first mounting openings (201).

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