High-speed wire rod mill finishing roll ring and preparation method

Abstract

The invention discloses a high-speed wire rod mill finishing roll ring and a preparation method, the high-speed wire rod mill finishing roll ring comprises a positioning sleeve and a finishing roll ring detachably connected with the positioning sleeve, a shaft sleeve body connected with a shaft roll is arranged in the positioning sleeve, one end of the shaft sleeve body extends out of the positioning sleeve, and the other end of the shaft sleeve body extends out of the positioning sleeve. The other end of the shaft sleeve body is flush with the end face of the positioning sleeve, the end, extending out of the positioning sleeve, of the shaft sleeve body is detachably connected with a fixing sleeve, the finish rolling roller ring is of a combined roller ring structure, and the finish rolling roller ring comprises a finished product front frame oval hole structure and a finished product frame round hole structure. The finished product front frame oval hole structures and the finished product frame round hole structures are arranged at intervals, the hole pattern width of the finished product front frame oval hole structures is larger than that of the finished product frame round hole structures, the hole pattern width of the finished product front frame oval hole structures is 29.80 mm, and the hole pattern width of the finished product frame round hole structures is 20.45 mm.

Description

Technical Field

[0001] The invention belongs to the technical field of high-speed wire rolling mill production, and in particular relates to a high-speed wire rolling mill finishing roller ring and a preparation method thereof. Background Art

[0002] At present, when Morgan's fifth-generation high-speed wire mill is designed to produce Ф20mm products, only two of the 10 finishing mills are used, and the other eight are empty. In the prior art, during the finishing rolling process, the roller ring of the first rolling mill can only use semi-elliptical holes machined from the roller ring due to the limitations of the roller ring width and the roller ring rolling center line. When in use, the roller ring is made of tungsten carbide powder with cobalt as a binder through high-temperature and high-pressure powder metallurgy technology. Under long-term operation, it needs to be repaired and replaced, which increases the company's cost.

[0003] In addition, the prior art adopts a semi-elliptical hole structure of a turned unit, and during installation, a limit sleeve flat key is used to connect the core shaft, which has low strength and is not conducive to the high-strength operation of the roller ring. Since the roller ring and the steel core shaft are assembled and used for rolling threaded steel, flat steel, etc. on the bar finishing mill, it is difficult to lock the roller ring in the assembly with the steel core shaft. Under long-term use, it is difficult to avoid the roller ring from loosening and slipping during the steel rolling production process.

[0004] In view of the above factors, a high-speed wire rolling mill finishing roller ring and a preparation method are provided, which adopts an assembled structure setting. When in use, it is connected and fixed to the finishing roller ring through a positioning sleeve, and the shaft roller and the shaft sleeve body are connected and fixed through a fixing sleeve, thereby ensuring a stable connection between the finishing roller rings (tungsten carbide roller rings) during use. Summary of the invention

[0005] The object of the present invention is to provide a finishing roller ring for a high-speed wire rod rolling mill and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] The object of the present invention is achieved through the following technical solutions: A finishing roll ring of a high-speed wire rod rolling mill, comprising a positioning sleeve and a finishing roll ring detachably connected to the positioning sleeve, wherein a shaft sleeve body connected to a shaft roller is arranged in the positioning sleeve;

[0007] One end of the sleeve body extends out of the positioning sleeve, and the other end of the sleeve body is flush with the end surface of the positioning sleeve;

[0008] One end of the shaft sleeve body extending out of the positioning sleeve is connected to the fixing sleeve in a detachable manner.

[0009] Furthermore, the finishing roller ring is a combined roller ring structure, and the finishing roller ring comprises a finished product front frame elliptical hole structure and a finished product frame circular hole structure, and the finished product front frame elliptical hole structure and the finished product frame circular hole structure are arranged at intervals;

[0010] The hole width of the elliptical hole structure of the finished product front frame is greater than the hole width of the circular hole structure of the finished product frame;

[0011] The finishing roller ring is obtained by high-temperature and high-pressure powder metallurgy using tungsten carbide powder and cobalt as a binder.

[0012] Furthermore, the hole width of the elliptical hole structure of the finished front frame is 29.80 mm, and the hole width of the round hole structure of the finished frame is 20.45 mm.

[0013] Furthermore, the side of the shaft sleeve body that is flush with the end surface of the positioning sleeve extends toward the circumferential surface of the finishing roller ring and is 5-10 mm away from the circumferential surface of the finishing roller ring;

[0014] The side of the shaft sleeve body that is flush with the end surface of the positioning sleeve extends toward the circumferential surface of the finishing roller ring and is fixed by bolts.

[0015] Furthermore, the detachable connection between one end of the shaft sleeve body extending out of the positioning sleeve and the fixing sleeve is a bolt connection.

[0016] Furthermore, the fixed sleeve is a sleeve structure, and the fixed sleeve is fitted with the end surface of the finishing roller ring, and the diameter of the fixed sleeve is smaller than the diameter of the finishing roller ring;

[0017] The diameter of the fixing sleeve is the same as the diameter of the shaft sleeve body on the side that is flat with the end face of the positioning sleeve.

[0018] Furthermore, the fixing sleeve is a cap-shaped structure, and the fixing sleeve is a hollow sleeve structure, and the fixing sleeve cooperates with the finishing roller ring and is connected to the shaft roller by bolts.

[0019] Furthermore, a plug-in column is provided on the end surface of the fixed sleeve to match the end surface of the finishing roller ring;

[0020] The plug-in posts are evenly distributed in four on the fixed sleeve and matched with the positioning holes on the end surface of the finishing roller ring;

[0021] The positioning hole on the end surface of the finishing roller ring is arranged at the inner circumference position of the circular opening on the finishing roller ring.

[0022] A method for preparing a finishing roller ring of a high-speed wire rolling mill comprises the following steps;

[0023] Install the 8-inch non-grooved roller with an outer diameter that meets the batch requirements onto the grinder.

[0024] Fix the axial position of the diamond grinding wheel according to the slot margin position corresponding to the hole width of the elliptical hole structure of the finished front frame and the hole width of the circular hole structure of the finished frame;

[0025] Grind the elliptical hole according to the operating procedures until the elliptical hole reaches the standard parameter requirements of the elliptical hole before the finished product of Ф19mm;

[0026] Fix the axial position of the diamond grinding wheel according to the groove margin position corresponding to the drawing requirements;

[0027] Grind the round hole according to the operating procedures until the round hole reaches the standard parameter requirements of Ф19mm;

[0028] The finished rolling roller ring with the finished front frame elliptical hole structure and the finished frame round hole structure prepared above is matched with the shaft sleeve body, the shaft sleeve body is inserted into the finishing rolling roller ring, and the shaft sleeve body is fixed with bolts at one end that is flush with the finishing rolling roller ring;

[0029] The other end of the shaft sleeve body cooperates with the fixing sleeve and fixes the fixing sleeve and the shaft roller by bolts.

[0030] A high-speed wire rod mill finishing roller ring is applied to the hole arrangement of the finished front frame roller ring used in the production of Ф20mm specification products by the Morgan fifth-generation high-speed wire rod mill.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention adopts an assembled structure setting. When in use, it is connected and fixed with the finishing roller ring through a positioning sleeve, and the shaft roller and the shaft sleeve body are connected and fixed through a fixing sleeve, thereby ensuring a stable connection between the finishing roller rings (tungsten carbide roller rings) during use.

[0033] The present invention provides a positioning sleeve and a fixing sleeve to ensure that the finishing roller ring will not be displaced after encountering high temperature or impact in the running state. The finishing roller ring can be replaced in the case of severe wear, which is simple to operate and convenient to replace, thereby reducing the labor intensity of workers.

[0034] The invention can avoid the roller ring from being loosened and slipped laterally during the production process when used for a long time.

[0035] The finishing roller ring of the present invention is made of tungsten carbide powder, obtained by high-temperature and high-pressure powder metallurgy technology without cobalt as a binder, and is low in price. By using the finishing roller ring of the Morgan fifth-generation high-speed wire mill with a high-speed wire mill, the cost of the first mill roller ring corresponding to the Ф20mm specification product can be reduced by 50%. It has a good promotion significance for domestic manufacturers who use tungsten carbide roller rings to produce wire products of the same specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is the overall connection schematic diagram of the present invention;

[0037] Figure 2 It is a schematic diagram of the roller ring structure of the present invention;

[0038] Figure 3 It is a partial enlarged schematic diagram of the end surface of the positioning sleeve of the present invention;

[0039] Figure 4 It is an enlarged schematic diagram of the connection of the fixing sleeve of the present invention. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] like Figure 1-4 As shown, a finishing roll ring of a high-speed wire rod rolling mill comprises a positioning sleeve 1 and a finishing roll ring 2 detachably connected to the positioning sleeve 1, wherein a sleeve body 4 connected to a shaft roller 3 is arranged in the positioning sleeve 1;

[0044] One end of the sleeve body 4 extends out of the positioning sleeve 1, and the other end of the sleeve body 4 is flush with the end surface of the positioning sleeve 1;

[0045] One end of the shaft sleeve body 4 extending out of the positioning sleeve 1 is detachably connected to the fixing sleeve 5 .

[0046] The positioning sleeve 1 and the shaft sleeve body 4 are integrally arranged, and the positioning sleeve plays a role of stable support.

[0047] In order to facilitate the rolling line to meet the setting standards in the use state, the finishing roller ring 2 is a combined roller ring structure, and the finishing roller ring 2 includes a finished product front frame elliptical hole structure 21 and a finished product frame circular hole structure 22, and the finished product front frame elliptical hole structure 21 and the finished product frame circular hole structure 22 are arranged at intervals;

[0048] The hole width of the finished front frame elliptical hole structure 21 is greater than the hole width of the finished frame circular hole structure 22 .

[0049] The finishing roller ring 2 is made of tungsten carbide powder using cobalt as a binder through high temperature and high pressure powder metallurgy.

[0050] The hole width of the finished front frame elliptical hole structure 21 is 29.80 mm, and the hole width of the finished frame circular hole structure 22 is 20.45 mm.

[0051] If one oval hole in the front frame and one round hole in the finished frame are arranged on the first roll ring of the rolling mill corresponding to the Ф20mm product, and the rolling line meets the design standards, it can be concluded through calculation that the above roll ring hole arrangement meets both the design requirements and the actual use requirements. The specific calculation is as follows:

[0052] W2+W3+L1+L2=70.0<W1

[0053] Where: W1 = 71.7 mm

[0054] W2=29.80mm

[0055] W3=20.45mm

[0056] L1=7.20mm

[0057] L2=12.55mm

[0058] W1—Roller ring width

[0059] W2—Ф20mm width of the front elliptical hole of the finished product

[0060] W3—Ø20mm finished round hole width L1—the distance from the elliptical hole to the side end face of the roller ring

[0061] L2—Distance from the round hole to the side end face of the roller ring

[0062] In order to facilitate the positioning and fixing of the finishing roller ring in the use state, the side of the shaft sleeve body 4 that is flush with the end surface of the positioning sleeve 1 extends toward the circumferential surface of the finishing roller ring 2 and is 5-10 mm away from the circumferential surface of the finishing roller ring 2;

[0063] The side of the shaft sleeve body 4 that is flush with the end surface of the positioning sleeve 1 extends toward the circumferential surface of the finishing roller ring 2 and is fixed by bolts.

[0064] In order to facilitate disassembly and replacement during use, thereby facilitating maintenance, the end of the sleeve body 4 extending out of the positioning sleeve 1 is detachably connected to the fixing sleeve 5 in a bolted manner.

[0065] The fixing sleeve 5 is a sleeve structure, and the fixing sleeve 5 is fitted with the end surface of the finishing roller ring 2, and the diameter of the fixing sleeve 5 is smaller than the diameter of the finishing roller ring 2;

[0066] The diameter of the fixing sleeve 5 is the same as the diameter of the sleeve body 4 on the flat side of the end surface of the positioning sleeve 1 .

[0067] The fixing sleeve 5 is a cap-shaped structure, and the fixing sleeve 5 is a hollow sleeve structure. The fixing sleeve 5 is matched with the finishing roller ring 2 and is connected to the shaft roller by bolts.

[0068] In order to facilitate fixing on the end face of the finishing roller ring in the use state, the end face of the fixing sleeve 5 is provided with a plug-in column 6 that matches with the end face of the finishing roller ring 2;

[0069] The plug-in posts 6 are evenly distributed in four pieces and are arranged on the fixing sleeve 5 to cooperate with the positioning holes on the end surface of the finishing roller ring 2;

[0070] The positioning hole on the end surface of the finishing roller ring 2 is arranged at the inner circumference position of the circular opening on the finishing roller ring 2 .

[0071] A method for preparing a finishing roller ring of a high-speed wire rolling mill comprises the following steps;

[0072] Install the 8-inch non-grooved roller with an outer diameter that meets the batch requirements onto the grinder.

[0073] Fix the axial position of the diamond grinding wheel according to the slot margin position corresponding to the hole width of the elliptical hole structure of the finished front frame and the hole width of the circular hole structure of the finished frame;

[0074] Grind the elliptical hole according to the operating procedures until the elliptical hole reaches the standard parameter requirements of the elliptical hole before the finished product of Ф19mm;

[0075] Fix the axial position of the diamond grinding wheel according to the groove margin position corresponding to the drawing requirements;

[0076] Grind the round hole according to the operating procedures until the round hole reaches the standard parameter requirements of Ф19mm;

[0077] The finished rolling roller ring with the finished front frame elliptical hole structure and the finished frame round hole structure prepared above is matched with the shaft sleeve body, the shaft sleeve body is inserted into the finishing rolling roller ring, and the shaft sleeve body is fixed with bolts at one end that is flush with the finishing rolling roller ring;

[0078] The other end of the shaft sleeve body cooperates with the fixing sleeve and fixes the fixing sleeve and the shaft roller by bolts.

[0079] A high-speed wire rod mill finishing roller ring is applied to the hole arrangement of the finished front frame roller ring used in the production of Ф20mm specification products by the Morgan fifth-generation high-speed wire rod mill.

[0080] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0081] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A finishing roller ring for a high-speed wire rod rolling mill, characterized in that: It comprises a positioning sleeve (1) and a finishing roller ring (2) detachably connected to the positioning sleeve (1), wherein a shaft sleeve body (4) connected to a shaft roller (3) is arranged inside the positioning sleeve (1); One end of the shaft sleeve body (4) extends out of the positioning sleeve (1), and the other end of the shaft sleeve body (4) is flush with the end surface of the positioning sleeve (1); One end of the shaft sleeve body (4) extending outside the positioning sleeve (1) is connected to the fixing sleeve (5) in a detachable manner.

2. The high-speed wire rod mill finishing roller ring according to claim 1, characterized in that: The finishing roller ring (2) is a combined roller ring structure, and the finishing roller ring (2) comprises a finished product front frame elliptical hole structure (21) and a finished product frame circular hole structure (22), and the finished product front frame elliptical hole structure (21) and the finished product frame circular hole structure (22) are arranged at intervals; The hole width of the finished product front frame elliptical hole structure (21) is greater than the hole width of the finished product frame circular hole structure (22); The finishing roller ring (2) is obtained from tungsten carbide powder using cobalt as a binder through high temperature and high pressure powder metallurgy.

3. The high-speed wire rod rolling mill finishing roller ring according to claim 2, characterized in that: The hole width of the finished front frame elliptical hole structure (21) is 29.80 mm, and the hole width of the finished front frame circular hole structure (22) is 20.45 mm.

4. The high-speed wire rod rolling mill finishing roller ring according to claim 3, characterized in that: The side of the shaft sleeve body (4) that is flush with the end surface of the positioning sleeve (1) extends toward the circumferential surface of the finishing roller ring (2) and is 5-10 mm away from the circumferential surface of the finishing roller ring (2); The shaft sleeve body (4) extends toward the circumferential surface of the finishing roller ring (2) on one side that is flush with the end surface of the positioning sleeve (1) and is fixed by bolts.

5. The finishing roller ring for a high-speed wire rod rolling mill according to claim 3, characterized in that: The end of the shaft sleeve body (4) extending outside the positioning sleeve (1) is detachably connected to the fixing sleeve (5) in the form of a bolt connection.

6. The finishing roller ring for a high-speed wire rod rolling mill according to claim 5, characterized in that: The fixing sleeve (5) is a sleeve structure, and the fixing sleeve (5) is fitted with the end surface of the finishing roller ring (2), and the diameter of the fixing sleeve (5) is smaller than the diameter of the finishing roller ring (2); The diameter of the fixing sleeve (5) is the same as the diameter of the shaft sleeve body (4) on the flat side of the end surface of the positioning sleeve (1).

7. The finishing roller ring for a high-speed wire rod rolling mill according to claim 6, characterized in that: The fixing sleeve (5) is a cap-shaped structure, and the fixing sleeve (5) is a hollow sleeve structure. The fixing sleeve (5) is matched with the finishing roller ring (2) and is connected to the shaft roller by bolts.

8. The finishing roller ring of a high-speed wire rod rolling mill according to claim 7, characterized in that: The end surface of the fixed sleeve (5) is provided with a plug-in column (6) which matches the end surface of the finishing roller ring (2); The plug-in posts (6) are evenly distributed in four locations on the fixed sleeve (5) and are matched with positioning holes on the end surface of the finishing roller ring (2); The positioning hole on the end surface of the finishing roller ring (2) is arranged at the inner circumference of the circular opening of the finishing roller ring (2).

9. A method for preparing a finishing roller ring for a high-speed wire rod rolling mill according to any one of claims 1 to 8, characterized in that: The steps include: Install the 8-inch non-grooved roller with an outer diameter that meets the batch requirements onto the grinder. Fix the axial position of the diamond grinding wheel according to the slot margin position corresponding to the hole width of the elliptical hole structure of the finished front frame and the hole width of the circular hole structure of the finished frame; Grind the elliptical hole according to the operating procedures until the elliptical hole reaches the standard parameter requirements of the elliptical hole before the finished product of Ф19mm; Fix the axial position of the diamond grinding wheel according to the groove margin position corresponding to the drawing requirements; Grind the round hole according to the operating procedures until the round hole reaches the standard parameter requirements of Ф19mm; The finished rolling roller ring with the finished front frame elliptical hole structure and the finished frame circular hole structure prepared above is matched with the shaft sleeve body, the shaft sleeve body is inserted into the finishing rolling roller ring, and the shaft sleeve body is fixed with bolts at one end that is flush with the finishing rolling roller ring; The other end of the shaft sleeve body cooperates with the fixing sleeve and fixes the fixing sleeve and the shaft roller by bolts.

10. A finishing roller ring of a high-speed wire rod mill according to any one of claims 1 to 9 is applied to the hole arrangement of the finished front frame roller ring used in the production of Ф20mm specification products by Morgan fifth-generation high-speed wire rod mill.

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