High-hardness composite alloy crust breaking hammer head for electrolytic aluminum

Abstract

The high-hardness composite alloy crust breaking hammer head comprises a rod part and a head part, the rod part is in threaded connection with the head part, the head part comprises an impact-resistant high-hardness alloy sheet located at the head part, a high-temperature-resistant stainless steel hammer body located at the waist part and an easy-to-weld steel hammer body located at the tail part, and the easy-to-weld steel hammer body is in threaded connection with the rod part. The rod portion and the head portion of the crust breaking hammer head are connected in a threaded mode, disassembly and replacement are convenient, the head portion is composed of the impact-resistant high-hardness alloy piece located on the head portion, the high-temperature-resistant stainless steel hammer body located on the waist portion and the steel hammer body located on the tail portion and easy to weld, and the upper stress limit of the crust breaking hammer head is greatly improved through the impact-resistant high-hardness alloy piece. The high-temperature-resistant stainless steel hammer body greatly improves the upper temperature limit of the crust breaking hammer head, the use performance of the crust breaking hammer head is guaranteed, the service life of the crust breaking hammer head is prolonged, and the maintenance and replacement cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic aluminium production technical field, especially a high hardness composite alloy shell beating hammer head for electrolytic aluminium. BACKGROUND

[0002] In the electrolytic aluminium production process, the temperature of the alumina or aluminium fluoride in the electrolytic tank is reduced after discharging, which causes the surface of the liquid electrolyte at the discharging opening to solidify and form a shell in a short time. When the alumina or aluminium fluoride is discharged again, the powder may not be able to fall into the liquid electrolyte pool, which affects the normal electrolytic aluminium work of the electrolytic tank, reduces the yield of the electrolytic tank, and causes the anode effect, resulting in low yield and high power consumption. In order to overcome the above problems, a hole is opened on the surface of the shell by using the shell beating device of the electrolytic tank before discharging the alumina or aluminium fluoride again, so as to facilitate the feeding of the alumina or aluminium fluoride.

[0003] The shell beating hammer head of the electrolytic tank is a key and easily damaged material in the electrolytic aluminium production. It is used in a high temperature and strong corrosion environment for a long time and has a high frequency of use, so it is easily damaged, especially the head of the shell beating hammer head. The service life of the general hammer head is usually only 3-4 months, so the hammer head needs to be replaced frequently, which greatly increases the maintenance and replacement cost and workload, and affects the aluminium yield. Therefore, there is an urgent need for a high hardness wear-resistant shell beating hammer head to prolong the service life. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a high hardness composite alloy shell beating hammer head for electrolytic aluminium to solve the problem that the general shell beating hammer head is easily damaged in a high temperature and strong corrosion environment, resulting in high cost and workload of replacement.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A high hardness composite alloy shell beating hammer head for electrolytic aluminium comprises a rod part and a head part, the rod part and the head part are threadedly connected, the head part comprises an impact-resistant high hardness alloy piece located at the head, a high-temperature-resistant stainless steel hammer body located at the waist, and an easily-welded steel hammer body located at the tail, and the easily-welded steel hammer body is threadedly connected with the rod part.

[0007] The further technical scheme is that the impact-resistant high hardness alloy piece and the high-temperature-resistant stainless steel hammer body are brazed.

[0008] The further technical scheme is that the impact-resistant high hardness alloy piece and the high-temperature-resistant stainless steel hammer body are provided with a self-tightening structure, the self-tightening structure comprises an annular locking jaw opening located at one side of the impact-resistant high hardness alloy piece, and a locking notch matched with the annular locking jaw opening is arranged at the end of the high-temperature-resistant stainless steel hammer body.

[0009] Further technical solutions are: the annular locking tooth port is barbed, and the locking recess is cylindrical.

[0010] Further technical solutions are: the high-temperature-resistant stainless steel hammer body is conical.

[0011] Further technical solutions are: the impact-resistant high-hardness alloy piece is made of high manganese steel ZGMn.

[0012] Compared with the prior art, the utility model discloses at least one of the following beneficial effects can be achieved:

[0013] The utility model discloses a high-hardness composite alloy shell beating hammer head for electrolytic aluminium, the rod part and head of the shell beating hammer head are connected in the form of screw thread, and the head is composed of the impact-resistant high-hardness alloy piece at the head, the high-temperature-resistant stainless steel hammer body at the waist and the easy-to-weld steel hammer body at the tail, the impact-resistant high-hardness alloy piece greatly improves the upper limit of stress of the shell beating hammer head, the high-temperature-resistant stainless steel hammer body greatly improves the upper limit of temperature of the shell beating hammer head, guarantees the use performance of the shell beating hammer head and prolongs its service life, and reduces the cost of maintenance and replacement. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model high-hardness composite alloy shell beating hammer head for electrolytic aluminium.

[0015] Figure 2 It is a structural schematic view of the utility model Figure 1 Self-tightening structure.

[0016] Figure 3 It is a structural schematic view of the utility model Figure 1 Head.

[0017] Figure 4 It is a structural schematic view of the utility model Figure 1 Impact-resistant high-hardness alloy piece.

[0018] Fig. 1, rod part; 2, head; 3, impact-resistant high-hardness alloy piece; 4, high-temperature-resistant stainless steel hammer body; 5, easy-to-weld steel hammer body; 6, self-tightening structure; 7, annular locking tooth port; 8, locking recess. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiment one:

[0026] The present embodiment is as shown in the accompanying drawings, a high-hardness composite alloy crust-breaking hammer head for electrolytic aluminum includes a rod part 1 and a head part 2, the rod part 1 and the head part 2 are threadedly connected, the head part 2 includes an impact-resistant high-hardness alloy piece 3 located at the head, a high-temperature-resistant stainless steel hammer body 4 located at the waist, and a weldable steel hammer body 5 located at the tail, the weldable steel hammer body 5 is threadedly connected with the rod part 1. Figure 1 The rod part 1 of the crust-breaking hammer head is connected with the working end of the crust-breaking cylinder through a clamp or a connecting flange, etc., under the action of the cylinder, the head part 2 impacts the material, the impact breaks the material, the broken material obtains kinetic energy from the hammer head and hits the baffle and screen bar in the rack of the crust-breaking device, at the same time, the materials also hit each other and are broken for many times. The material smaller than the gap of the screen bar is discharged from the gap, and the larger material is broken again by the impact, grinding and extrusion of the hammer head on the screen bar, and is finally extruded from the gap to obtain the product with the required particle size. The impact-resistant high-hardness alloy piece 3 at the head of the head part 2 plays a role of wear resistance and impact resistance during work, greatly improves the upper limit of the stress of the hammer head, and greatly reduces the wear. The high-temperature-resistant stainless steel hammer body 4 at the waist of the head part 2 improves the high-temperature resistance of the crust-breaking hammer head, and the combination of the two can greatly improve the performance and service life of the hammer head. The weldable steel hammer body 5 at the tail of the head part 2 has good welding performance and is easy to process.

[0027] The rod part 1 of the crust-breaking hammer head is connected with the working end of the crust-breaking cylinder through a clamp or a connecting flange, etc., under the action of the cylinder, the head part 2 impacts the material, the impact breaks the material, the broken material obtains kinetic energy from the hammer head and hits the baffle and screen bar in the rack of the crust-breaking device, at the same time, the materials also hit each other and are broken for many times. The material smaller than the gap of the screen bar is discharged from the gap, and the larger material is broken again by the impact, grinding and extrusion of the hammer head on the screen bar, and is finally extruded from the gap to obtain the product with the required particle size. The impact-resistant high-hardness alloy piece 3 at the head of the head part 2 plays a role of wear resistance and impact resistance during work, greatly improves the upper limit of the stress of the hammer head, and greatly reduces the wear. The high-temperature-resistant stainless steel hammer body 4 at the waist of the head part 2 improves the high-temperature resistance of the crust-breaking hammer head, and the combination of the two can greatly improve the performance and service life of the hammer head. The weldable steel hammer body 5 at the tail of the head part 2 has good welding performance and is easy to process.

[0028] Preferably, the impact-resistant high-hardness alloy piece 3 and the high-temperature-resistant stainless steel hammer body 4 are brazed.

[0029] Brazing can greatly eliminate the connection gap between the impact-resistant high-hardness alloy piece 3 and the high-temperature-resistant stainless steel hammer body 4, the brazing has small deformation, the joint is smooth and beautiful, and is suitable for welding precise, complex and components composed of different materials, especially like the crust-breaking hammer head, the firmness of welding and the tightness of the joint affect the service life of the hammer head itself, and the prevention of the separation of the parts and the falling of the welding material also relates to the production quality of electrolytic aluminum.

[0030] Embodiment two:

[0031] On the basis of the above embodiment, the present embodiment is as shown in the accompanying drawings, a high-hardness composite alloy crust-breaking hammer head for electrolytic aluminum includes a rod part 1 and a head part 2, the rod part 1 and the head part 2 are threadedly connected, the head part 2 includes an impact-resistant high-hardness alloy piece 3 located at the head, a high-temperature-resistant stainless steel hammer body 4 located at the waist, and a weldable steel hammer body 5 located at the tail, the weldable steel hammer body 5 is threadedly connected with the rod part 1. Figure 2 、 Figure 3 and Figure 4 It is shown that the impact-resistant high-hardness alloy piece 3 and the high-temperature-resistant stainless steel hammer body 4 are provided with a self-tightening structure 6, the self-tightening structure 6 includes an annular locking jaw 7 located on one side of the impact-resistant high-hardness alloy piece 3, and a locking notch 8 provided at the end of the high-temperature-resistant stainless steel hammer body 4 and matched with the annular locking jaw 7 for stable fastening.

[0032] The annular locking tooth 7 of the impact-resistant high-hardness alloy sheet 3 is fastened by the locking recess 8 of the high-temperature-resistant stainless steel hammer body 4, and the stress directions of the impact-resistant high-hardness alloy sheet 3 and the high-temperature-resistant stainless steel hammer body 4 are opposite to each other at each time of impacting the material, so that the annular locking tooth 7 is stably fastened by the locking recess 8.

[0033] Preferably, the annular locking tooth 7 is barbed, and the locking recess 7 is cylindrical.

[0034] The starting locking recess 8 is circumferential, facilitating the barbed annular locking tooth 7 to be placed in the locking recess 8, then fixing any one of the impact-resistant high-hardness alloy sheet 3 and the high-temperature-resistant stainless steel hammer body 4, and knocking the other one (it is more convenient to knock the impact-resistant high-hardness alloy sheet 3), so that the two are relatively moved, under the action of the annular locking tooth 7, the locking recess 8 starts to shrink and tightly hold the annular locking tooth 7, and under the continuous work, the two are directly locked more tightly.

[0035] Preferably, the high-temperature-resistant stainless steel hammer body 4 is conical.

[0036] The conical high-temperature-resistant stainless steel hammer body 4 breaks the material by the impact-resistant high-hardness alloy sheet 3 on the small end, the stress area is small, and the breaking effect is good.

[0037] Preferably, the impact-resistant high-hardness alloy sheet 3 is made of high manganese steel ZGMn13.

[0038] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-hardness composite alloy crust-breaking hammer head for electrolytic aluminum, comprising a shank portion (1) and a head portion (2), the shank portion (1) and the head portion (2) being threadedly connected, characterized in that: The head (2) comprises an impact-resistant high-hardness alloy piece (3) at the head, a high-temperature-resistant stainless steel hammer body (4) at the waist, and a weldable steel hammer body (5) at the tail, and the weldable steel hammer body (5) is threadedly connected with the rod (1).

2. The high hardness composite alloy crust breaking hammer head for electrolytic aluminum according to claim 1, characterized in that: The impact-resistant high-hardness alloy piece (3) is brazed with the high-temperature-resistant stainless steel hammer body (4).

3. The high hardness composite alloy crust buster hammer head for electrolytic aluminum as claimed in claim 1, characterized in that: The impact-resistant high-hardness alloy piece (3) and the high-temperature-resistant stainless steel hammer body (4) are provided with a self-tightening structure (6), which comprises an annular locking jaw (7) on one side of the impact-resistant high-hardness alloy piece (3), and a locking notch (8) provided at the end of the high-temperature-resistant stainless steel hammer body (4) and matched with the annular locking jaw (7).

4. The high hardness composite alloy crust breaking hammer head for electrolytic aluminum according to claim 3, characterized in that: The annular locking jaw (7) is barbed, and the locking notch (8) is cylindrical.

5. The high hardness composite alloy crust buster hammer head for electrolytic aluminum as claimed in claim 1, characterized in that: The high-temperature-resistant stainless steel hammer body (4) is conical.

6. The high hardness composite alloy crust buster hammer head for electrolytic aluminum as claimed in claim 1, characterized in that: The impact-resistant high-hardness alloy piece (3) is made of high manganese steel ZGMn13.

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