Flat head sleeve of laser cladding rolling mill
By using laser cladding technology to form the cladding layer on the direct-face structure of the flat head cover of the rolling mill, the early scrapping problem of flat head cover caused by wear is solved, which improves service life and reduces costs.
Patent Information
- Application Number
- CN202421901589.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The direct structure of the flat head cover of the rolling mill affects the normal use of the equipment due to wear, resulting in the scrapping of the flat head cover and the increase in the cost.
The first cladding layer is formed on the straight-face structure of the flat head cover by using laser cladding technology to improve its wear resistance, and through the design of through holes and mounting holes, threaded holes and bolts are used to connect external components to enhance the stability of the structure.
Improves the service life of flat head covers and reduces maintenance and replacement costs due to early scrapping.
Smart Images
Figure CN222931563U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of laser cladding, and more specifically, it relates to a laser cladding flat head sleeve for a rolling mill. Background Art
[0002] A flat head sleeve refers to a sleeve component in a rolling mill. It is used to support or position rolling tools to ensure that the metal material maintains the correct shape and size during the rolling process. The design and manufacturing precision of the flat head sleeve will directly affect the processing quality of the product and the working efficiency of the rolling mill.
[0003] The interior of the flat head sleeve of the rolling mill has a flat hole, and the straight surface structure of the flat hole is the main force-bearing and wear surface. After working for a period of time, this straight surface structure will be worn, affecting the normal use of the equipment, resulting in the scrapping of the entire flat head sleeve, and increasing the cost. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a laser cladding flat head sleeve for a rolling mill, aiming to solve the problem that the straight surface structure is worn, affecting the normal use of the equipment, resulting in the scrapping of the entire flat head sleeve, and increasing the cost.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a laser cladding flat head sleeve for a rolling mill, including a flat head sleeve body. A through hole is provided in the middle of the flat head sleeve body. One end of the through hole is coaxially provided with a mounting hole, and the outer diameter of the mounting hole is larger than the outer diameter of the through hole, so as to form a mounting surface on the side of the mounting hole close to the through hole. A plurality of threaded holes are circumferentially arranged on the mounting surface. The other end of the through hole is coaxially provided with a connecting hole, and a plurality of connecting teeth are arranged on the outer circumference of the connecting hole. The through hole has two first blocks arranged opposite to each other in the radial direction. The inner side surface of the first block has a straight surface structure, and a first cladding layer is provided on the surface of the straight surface structure.
[0006] In a possible implementation manner, assembly grooves are respectively arranged on the two opposite sides in the radial direction of the through hole. The two first blocks are respectively arranged in the middle of the two assembly grooves in a one-to-one correspondence. A fitting gap is formed on both sides of the first block, and a locking wedge block is inserted into the fitting gap. The two locking wedge blocks are used to position the first block in the corresponding assembly groove.
[0007] In a possible implementation manner, a positioning boss is provided on the outer end surface of the first block, and a positioning groove is opened at the bottom of the assembly groove. The positioning boss is inserted and matched with the positioning groove.
[0008] In a possible implementation manner, a first through groove is axially opened in the middle of the inner side surface of the straight surface structure.
[0009] In a possible implementation, the cross-section of the first through slot is a semi-circular structure.
[0010] In a possible implementation, the through hole further includes two second blocks disposed opposite to each other in the radial direction. The inner side surface of the second block has an arc surface structure, and a second cladding layer is provided on the surface of the arc surface structure.
[0011] In a possible implementation, both of the two second blocks are integrally formed with the flat head sleeve body.
[0012] In a possible implementation, the first block and the second block are spaced apart to form a second through slot.
[0013] In a possible implementation, the cross-section of the second through slot is a semi-circular structure.
[0014] The beneficial effects of the laser cladding mill flat head sleeve provided by the present utility model are as follows: Compared with the prior art, a through hole is provided in the middle of the flat head sleeve body. One end of the through hole is coaxially provided with a mounting hole, and the outer diameter of the mounting hole is larger than the outer diameter of the through hole to form a mounting surface on the side of the mounting hole close to the through hole. A plurality of threaded holes are circumferentially provided on the mounting surface, and corresponding bolts are used to connect external components such as end covers or mounting discs. The other end of the through hole is coaxially provided with a connection hole, and a plurality of connection teeth are provided on the outer periphery of the connection hole to realize the connection of the shafting. In addition, the through hole has two first blocks disposed opposite to each other in the radial direction. The inner side surface of the first block has a straight surface structure, and a first cladding layer is formed on the surface of the straight surface structure by laser cladding technology to improve the wear resistance of the surface of the straight surface structure and extend the service life of the mill flat head sleeve. The laser cladding mill flat head sleeve provided by the present utility model improves the anti-wear performance of the straight surface structure by providing a cladding layer on the straight surface structure of the first block, thereby increasing the service life of the mill flat head sleeve and reducing the cost. Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a side view of the laser cladding mill flat head sleeve provided by the embodiment of the present utility model;
[0017] Figure 2 is Figure 1 the cross-sectional view along line A-A in
[0018] Figure 3As Figure 1 Sectional view along line B-B in
[0019] Figure 4 As Figure 1 Partial enlarged view at M in
[0020] In the figure: 100, flat head sleeve body; 110, through hole; 120, mounting hole; 121, threaded hole; 130, connecting hole; 131, connecting teeth; 140, first block; 141, straight surface structure; 142, first cladding layer; 143, positioning boss; 144, first through groove; 150, locking wedge block; 160, second block; 161, arc surface structure; 162, second cladding layer; 163, second through groove. Specific implementation manner
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0022] In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., they are all used to distinguish different objects and are not used to describe a specific order.
[0023] In the claims, description and above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present utility model.
[0024] Please refer to Figures 1 to 4, a description is now given of the laser cladding rolling mill flat head sleeve provided by the present utility model. The laser cladding rolling mill flat head sleeve includes a flat head sleeve body 100. A through hole 110 is provided in the middle of the flat head sleeve body 100. One end of the through hole 110 is coaxially provided with a mounting hole 120. The outer diameter of the mounting hole 120 is larger than the outer diameter of the through hole 110 to form a mounting surface on the side of the mounting hole 120 close to the through hole 110. A plurality of threaded holes 121 are provided in the circumferential direction of the mounting surface. The other end of the through hole 110 is coaxially provided with a connecting hole 130. A plurality of connecting teeth 131 are provided on the outer circumference of the connecting hole 130. The through hole 110 has two first blocks 140 arranged opposite to each other in the radial direction. The inner side surface of the first block 140 has a straight surface structure 141, and a first cladding layer 142 is provided on the surface of the straight surface structure 141.
[0025] For the laser cladding rolling mill flat head sleeve provided by the present utility model, compared with the prior art, a through hole 110 is provided in the middle of the flat head sleeve body 100. One end of the through hole 110 is coaxially provided with a mounting hole 120. The outer diameter of the mounting hole 120 is larger than the outer diameter of the through hole 110 to form a mounting surface on the side of the mounting hole 120 close to the through hole 110. A plurality of threaded holes 121 are provided in the circumferential direction of the mounting surface. External components such as end covers or mounting plates are connected by corresponding bolts. The other end of the through hole 110 is coaxially provided with a connecting hole 130. A plurality of connecting teeth 131 are provided on the outer circumference of the connecting hole 130, which can realize the connection of the shafting. In addition, the through hole 110 has two first blocks 140 arranged opposite to each other in the radial direction. The inner side surface of the first block 140 has a straight surface structure 141, and the first cladding layer 142 is formed on the surface of the straight surface structure 141 by laser cladding technology to improve the wear resistance of the surface of the straight surface structure 141 and extend the service life of the rolling mill flat head sleeve. For the laser cladding rolling mill flat head sleeve provided by the present utility model, by providing a cladding layer on the straight surface structure 141 of the first block 140, the anti-wear performance of the straight surface structure 141 is improved, the service life of the rolling mill flat head sleeve is increased, and the cost is reduced.
[0026] Please refer to Figure 1 and Figure 4 , assembly grooves are respectively provided on the two opposite sides in the radial direction of the through hole 110. The two first blocks 140 are respectively arranged in the middle of the two assembly grooves in a one-to-one correspondence. A fitting gap is formed on both sides of the first block 140. The fitting gap is a wedge-shaped groove structure, and the width gradually decreases from the inside to the outside. A locking wedge block 150 is inserted into the fitting gap. The structure of the locking wedge block 150 is adapted to the structure of the fitting gap. The two locking wedge blocks 150 are inserted into the fitting gap from the inside to the outside, so as to position the first block 140 in the corresponding assembly groove.
[0027] Preferably, the locking wedge block 150 is inserted into the fitting gap by an interference fit method, which can improve the stability of the first block 140 in the assembly groove.
[0028] In addition, a positioning boss 143 is provided on the outer end face of the first block 140, and a positioning groove is formed at the bottom of the assembly groove. The width of the positioning boss 143 gradually decreases from inside to outside, and the positioning groove is adapted to the positioning boss 143. The insertion fit between the positioning boss 143 and the positioning groove can provide corresponding guiding and positioning functions for the first block 140 in the assembly groove.
[0029] Please refer to Figure 1 and Figure 3 , a first through groove 144 is axially formed in the middle of the inner side surface of the straight surface structure 141, and the cross section of the first through groove 144 is a semi-circular structure. The first through groove 144 can divide the first block 140 into two parts, so that the first block 140 has two straight surface structures 141. The two straight surface structures 141 can form a better contact surface. At the same time, the first through groove 144 can also conduct part of the heat outwards and discharge part of the small sundries or worn debris.
[0030] Please refer to Figures 1 to 4 , the through hole 110 further includes two second blocks 160 arranged oppositely in the radial direction. The inner side surface of the second block 160 has an arc surface structure 161. The straight surface structures 141 on the two first blocks 140 and the arc surface structures 161 on the two second blocks 160 together form a waist-shaped hole structure in the flat head sleeve. A second cladding layer 162 is provided on the surface of the arc surface structure 161, which can also increase the wear resistance of the arc surface structure 161.
[0031] Preferably, both of the two second blocks 160 are integrally cast or forged with the flat head sleeve body 100 to ensure the structural strength of the two.
[0032] In addition, the first block 140 and the second block 160 are arranged at intervals to form a second through groove 163, and the cross section of the second through groove 163 is a semi-circular structure. The second through groove 163 can facilitate the insertion of the locking wedge block 150 into the assembly groove, and can also play a role in heat dissipation and discharging sundries.
[0033] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. Laser cladding rolling mill flat head cover, characterized in that: The invention comprises a flat head cover body (100), wherein a through hole (110) is provided in the middle of the flat head cover body (100), a mounting hole (120) is coaxially arranged at one end of the through hole (110), the outer diameter of the mounting hole (120) is larger than the outer diameter of the through hole (110), so as to form a mounting surface on the side of the mounting hole (120) close to the through hole (110), a plurality of threaded holes (121) are arranged in the circumference of the mounting surface, a connecting hole (130) is coaxially arranged at the other end of the through hole (110), a plurality of connecting teeth (131) are arranged on the outer circumference of the connecting hole (130), and the through hole (110) has two first blocks (140) arranged radially opposite to each other, the inner side surface of the first block (140) has a straight surface structure (141), and the surface of the straight surface structure (141) is provided with a first cladding layer (142).
2. The laser cladding rolling mill flat head cover according to claim 1, characterized in that: Assembly grooves are respectively arranged on radially opposite sides of the through hole (110), and the two first blocks (140) are respectively arranged in the middle of the two assembly grooves in a one-to-one correspondence. Fitting gaps are respectively formed on the two sides of the first block (140), and locking wedge blocks (150) are inserted in the fitting gaps. The two locking wedge blocks (150) are used to position the first block (140) in the corresponding assembly grooves.
3. The laser cladding rolling mill flat head cover according to claim 2, characterized in that: The outer end surface of the first block (140) is provided with a positioning boss (143), the bottom of the assembly groove is provided with a positioning groove, and the positioning boss (143) is inserted and matched with the positioning groove.
4. The laser cladding rolling mill flat head cover according to claim 1, characterized in that: A first through groove (144) is axially provided in the middle of the inner side surface of the straight surface structure (141).
5. The laser cladding rolling mill flat head cover according to claim 4, characterized in that: The cross section of the first through groove (144) is a semicircular structure.
6. The laser cladding rolling mill flat head cover according to claim 1, characterized in that: The through hole (110) further comprises two second blocks (160) arranged radially opposite to each other, the inner side surface of the second block (160) comprises a curved surface structure (161), and the surface of the curved surface structure (161) is provided with a second cladding layer (162).
7. The laser cladding rolling mill flat head cover according to claim 6, characterized in that: The two second blocks (160) are integrally formed with the flat headgear body (100).
8. The laser cladding rolling mill flat head cover according to claim 6, characterized in that: The first block (140) and the second block (160) are arranged at an interval to form a second through groove (163).
9. The laser cladding rolling mill flat head cover according to claim 8, characterized in that: The cross section of the second through groove (163) is a semicircular structure.