A wear-resistant composite lower guide plate for steel segment rolling mill

Abstract

The invention relates to the technical field of steel ball production equipment, and specifically to a wear-resistant composite lower guide plate for a steel segment rolling mill, comprising a base plate and a wear-resistant alloy block, wherein the base plate is provided with mounting holes, the wear-resistant alloy block is cast by a composite wear-resistant alloy, the hardness of the wear-resistant alloy block can reach above HRC70, and the wear-resistant life thereof is 3-4 times that of a conventional lower guide plate; when in use, the maintenance frequency of the lower guide plate is greatly reduced, which has a good protective effect on the equipment, and at the same time greatly reduces maintenance, and also greatly reduces the frequency of maintenance by workers under adverse working conditions; the production cost of the enterprise can be directly reduced, and the effective working time of the equipment is also improved, the number of maintenance personnel and the maintenance frequency are greatly reduced, and the maintenance management cost of the lower guide plate is greatly reduced, thereby improving the economic benefits for the enterprise; when the wear-resistant alloy block is severely worn and cannot be used, rapid installation can be achieved, and replacement is very convenient.

Description

Technical Field

[0001] The invention relates to the technical field of steel ball production equipment, in particular to a wear-resistant composite lower guide plate for a steel segment rolling mill. Background Art

[0002] The steel section rolling mill is an oblique rolling mill for producing steel balls. The oblique rolling equipment is mainly composed of two rollers that are not parallel but cross each other, and work to rotate in the same direction around their own axis. The principle is to drive the rolled piece to rotate and move forward by the contact friction between the roller and the rolled piece. This kind of rolling is also called spiral rolling. In order to ensure the rolling accuracy, the roller is also equipped with an axial adjustment mechanism. The upper and lower guide plates are installed between the two rollers. The upper guide plate is fixed on the bracket of the upper crossbeam, and the adjustment of the upper guide plate is completed manually using a spiral pressing mechanism. The upper guide plate can also be adjusted to its horizontal plane with 4 screws. The lower guide plate is fixed on the base, fixed with a dovetail groove and a clamping bolt, and the height position is adjusted with a pad.

[0003] The lower guide plate is an important and consumable part in the production process of steel balls. Its service life directly affects the operating efficiency of the equipment and the production benefits of the enterprise. Especially with the current need for the accelerated replacement of cast steel balls by rolled steel balls, the product performance and environmental advantages of rolled steel balls are becoming more and more obvious. At present, the guide plates used by most steel ball rolling enterprises adopt the cladding mode, which has a short service life and poor performance consistency. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a composite wear-resistant and impact-resistant alloy liner plate capable of increasing service life.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] The present invention provides a wear-resistant composite lower guide plate for a steel section rolling mill, comprising a base plate and a wear-resistant alloy block, wherein the base plate is provided with a mounting hole, the wear-resistant alloy block is cast by a composite wear-resistant alloy, and the manufacturing components of the wear-resistant alloy block include carbon: 2.8-3.3 parts; chromium: 14-17 parts; molybdenum: 1.0-2.0 parts; manganese: 0.5-1.5 parts; silicon: 0.5-1.5 parts; nickel: 0-5.0 parts; copper: 0.2-0.5 parts; boron: 0.1-0.2 parts, and the wear-resistant alloy block is fixed to the base plate by composite welding; wherein,

[0007] The base plate includes a base body and an active clamping block, which is composite-welded with a wear-resistant alloy block. The active clamping block is an L-shaped structure, and a plurality of grooves are provided on the side wall of the active clamping block. A No. 1 limit rod is slidably connected in the groove, and the No. 1 limit rod is connected to the side wall of the groove by a reset spring. The No. 1 limit rod is made of a metal material that can be adsorbed by a magnet. A No. 2 limit rod is vertically fixed at the lower end of the active clamping block. The upper end surface of the base body is provided with a structure corresponding to the active clamping block, a No. 1 slot corresponding to the No. 1 limit rod is provided on the side wall of the base body, and a No. 2 slot corresponding to the No. 2 limit rod is provided on the side wall of the base body.

[0008] Preferably, a welding plate is laterally arranged on the top of the base plate, and a T-shaped structure is formed between the welding plate and the base plate.

[0009] Preferably, the production process of the wear-resistant alloy block comprises the following steps:

[0010] S1: Use injection molding machine to make sand mold;

[0011] S2: Using a medium frequency induction furnace to melt carbon, chromium, molybdenum, manganese, silicon, nickel, copper and boron materials to obtain a liquid alloy;

[0012] S3: pouring the liquid alloy into the mold to obtain a blank;

[0013] S4: grinding the surface of the blank to obtain a semi-finished product;

[0014] S5: Quench and temper the semi-finished product to obtain a final high-hardness, wear-resistant, wear-resistant alloy block.

[0015] Preferably, the composite welding process between the wear-resistant alloy block and the movable clamp block comprises the following steps:

[0016] S1: Casting of wear-resistant alloy blocks;

[0017] S2: wear-resistant alloy block reference surface treatment;

[0018] S3: Processing of movable card blocks;

[0019] S4: Docking of the wear-resistant alloy block and the movable clamping block;

[0020] S5: composite welding;

[0021] S6: Heat treatment of wear-resistant alloy block;

[0022] S7: The wear-resistant alloy blocks are surface treated and put into storage.

[0023] By adopting the above technical solution, the beneficial effects of the present invention are:

[0024] The wear-resistant composite lower guide plate for a steel section rolling mill described in the present invention has a wear-resistant alloy block manufactured by the above-mentioned composition and process, and the hardness can reach above HRC70, and its wear-resistant life is 3-4 times that of a conventional lower guide plate; the maintenance frequency of the lower guide plate is greatly reduced during use, which has a good protective effect on the equipment, while greatly reducing maintenance, and also greatly reducing the frequency of workers' maintenance under adverse working conditions; it can directly reduce the production cost of the enterprise, and at the same time also improve the effective working time of the equipment, greatly reduce the maintenance personnel and maintenance frequency, so that the maintenance management cost of the lower guide plate is greatly reduced, and the economic benefits are improved for the enterprise; when the wear-resistant alloy block is severely worn and cannot be used, it can be quickly installed and replaced very conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the present invention;

[0026] Figure 2 A top view of the present invention

[0027] Figure 3 for Figure 1 Middle AA section view;

[0028] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0029] In the figure: base plate 100, base body 110, slot No. 1 111, slot No. 2 112, movable block 120, groove 121, limit rod No. 1 122, return spring 123, limit rod No. 2 124, wear-resistant alloy block 200, mounting hole 300, welding plate 400. DETAILED DESCRIPTION

[0030] The following will be combined with 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-4 , the present invention provides a technical solution:

[0032] The present invention provides a wear-resistant composite lower guide plate for a steel segment rolling mill, comprising a base plate 100 and a wear-resistant alloy block 200, wherein the base plate 100 is provided with a mounting hole 300, the wear-resistant alloy block 200 is cast by a composite wear-resistant alloy, and the manufacturing components of the wear-resistant alloy block 200 include carbon: 2.8-3.3 parts; chromium: 14-17 parts; molybdenum: 1.0-2.0 parts; manganese: 0.5-1.5 parts; silicon: 0.5-1.5 parts; nickel: 0-5.0 parts; copper: 0.2-0.5 parts; boron: 0.1-0.2 parts, and the wear-resistant alloy The block 200 is fixed to the base plate 100 by composite welding. A welding plate 400 is horizontally arranged on the top of the base plate 100. The welding plate 400 and the base plate 100 form a T-shaped structure, which can increase the welding surface and improve the welding effect; the base plate 100 includes a matrix 110 and an active block 120. The active block 120 is compositely welded with the wear-resistant alloy block 200. The active block 120 is an L-shaped structure. A plurality of grooves 121 are provided on the side wall of the active block 120. A first limit rod 122 is slidably connected in the groove 121. The first limit rod 122 is The rod 122 is connected to the side wall of the groove 121 by a reset spring 123. The first limit rod 122 is made of a metal material that can be adsorbed by a magnet. A second limit rod 124 is vertically fixedly arranged at the lower end of the movable block 120. The upper end surface of the base 110 is arranged in a structure corresponding to the movable block 120. A first slot 111 corresponding to the first limit rod 122 is provided on the side wall of the base 110, and a second slot 112 corresponding to the second limit rod 124 is provided on the side wall of the base 110. When the wear-resistant alloy block 200 is severely worn and cannot be When in use, the magnet can be used to adsorb the left side of the No. 1 limit rod 122, and the No. 1 limit rod 122 can be adsorbed by the magnet, so that the No. 1 limit rod 122 moves to the right and slides out of the No. 1 slot 111. At this time, the movable block 120 can be moved upward. At this time, the movable block 120 can be removed together with the wear-resistant alloy block 200. When installing, only the No. 2 limit rod 124 needs to be inserted into the No. 2 slot 112. At this time, the No. 1 limit rod 122 is inserted into the No. 1 slot 111 under the action of the reset spring 123, so that quick installation can be achieved and replacement is very convenient.

[0033] As an embodiment of the present invention, the production process of the wear-resistant alloy block 200 includes the following steps:

[0034] S1: Use injection molding machine to make sand mold;

[0035] S2: Using a medium frequency induction furnace to melt carbon, chromium, molybdenum, manganese, silicon, nickel, copper and boron materials to obtain a liquid alloy;

[0036] S3: pouring the liquid alloy into the mold to obtain a blank;

[0037] S4: grinding the surface of the blank to obtain a semi-finished product;

[0038] S5: quenching and tempering the semi-finished product to obtain a final high-hardness and wear-resistant wear-resistant alloy block 200 .

[0039] As an embodiment of the present invention, the composite welding process between the wear-resistant alloy block 200 and the movable clamping block 120 includes the following steps:

[0040] S1: Casting of wear-resistant alloy block 200;

[0041] S2: 200 reference surface treatment of wear-resistant alloy block;

[0042] S3: Processing of the movable block 120;

[0043] S4: docking of the wear-resistant alloy block 200 and the movable clamping block 120;

[0044] S5: composite welding;

[0045] S6: Heat treatment of wear-resistant alloy block 200;

[0046] S7: The wear-resistant alloy block 200 is surface treated and put into storage.

[0047] The hardness of the wear-resistant alloy block 200 manufactured by the above composition and process can reach above HRC70, and its wear-resistant life is 3-4 times that of the conventional lower guide plate. The maintenance frequency of the lower guide plate is greatly reduced during use, which plays a good protective role for the equipment, greatly reduces maintenance, and also greatly reduces the frequency of workers' maintenance under harsh working conditions. It can directly reduce the production cost of the enterprise, and at the same time increase the effective working time of the equipment, greatly reduce the maintenance personnel and maintenance frequency, and greatly reduce the maintenance management cost of the lower guide plate, thereby improving the economic benefits for the enterprise.

[0048] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wear-resistant composite lower guide plate for a steel segment rolling mill, characterized in that: It includes a base plate and a wear-resistant alloy block. The base plate is provided with a mounting hole. The wear-resistant alloy block is cast with a composite wear-resistant alloy. The manufacturing components of the wear-resistant alloy block include 2.8-3.3 parts of carbon and 14-17 parts of chromium. Molybdenum: 1.0-2.0 parts; Manganese: 0.5-1.5 parts; Silicon: 0.5-1.5 parts; Nickel: 0-5.0 parts; Copper: 0.2-0.5 parts; Boron: 0.1-0.2 parts, the wear-resistant alloy block and the substrate are fixed by composite welding; wherein, The base plate comprises a base body and an active clamping block, the active clamping block is compositely welded with a wear-resistant alloy block, the active clamping block is an L-shaped structure, a plurality of grooves are provided on the side wall of the active clamping block, a No. 1 limit rod is slidably connected in the groove, the No. 1 limit rod is connected to the side wall of the groove by a reset spring, the No. 1 limit rod is made of a metal material that can be adsorbed by a magnet, a No. 2 limit rod is vertically fixedly arranged at the lower end of the active clamping block, the upper end surface of the base body is arranged in a structure corresponding to the active clamping block, a No. 1 slot corresponding to the No. 1 limit rod is provided on the side wall of the base body, a No. 2 slot corresponding to the No. 2 limit rod is provided on the side wall of the base body, a welding plate is horizontally arranged on the top of the base body, and a T-shaped structure is formed between the welding plate and the base body; The production process of the wear-resistant alloy block comprises the following steps: S1: Use injection molding machine to make sand mold; S2: Using a medium frequency induction furnace to melt carbon, chromium, molybdenum, manganese, silicon, nickel, copper and boron materials to obtain a liquid alloy; S3: pouring the liquid alloy into the mold to obtain a blank; S4: grinding the surface of the blank to obtain a semi-finished product; S5: Quench and temper the semi-finished product to obtain a final high-hardness, wear-resistant, wear-resistant alloy block.

2. The wear-resistant composite lower guide plate for a steel segment rolling mill according to claim 1, characterized in that: The composite welding process between the wear-resistant alloy block and the movable clamping block The following steps are involved: S1: Casting of wear-resistant alloy blocks; S2: wear-resistant alloy block reference surface treatment; S3: Processing of movable card blocks; S4: docking of the wear-resistant alloy block and the movable clamping block; S5: composite welding; S6: Heat treatment of wear-resistant alloy block; S7: The wear-resistant alloy blocks are surface treated and put into storage.

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