Anti-corrosion high-wear-resistance sink roll

Abstract

The utility model discloses a corrosion-resistant high wear-resistant sink roll which comprises a roll shaft, the outer side of the roll shaft is connected with a roller through two symmetrically-arranged connecting shaft sleeves, a communicating channel is formed in the roll shaft, a threaded pipe with the end communicated with the communicating channel is arranged in an inner cavity of the roller, a notch groove is formed in the outer wall of the roller, and the end of the notch groove is communicated with the communicating channel. And a high-temperature-resistant coating and a corrosion-resistant coating are sequentially sprayed outside the notch groove. A cooling medium is conveyed into the threaded pipe arranged in the cavity through the communicating channel to control the temperature of the sink roller, the surface temperature of the roller can be prevented from being too high, molten zinc is prevented from being excessively solidified or scaling on the surface of the roller, and a zinc coating on the surface of a steel strip is more uniform; the notch grooves are formed in the outer side face of the roller, and liquid zinc on the binding face of the steel belt and the roller can be discharged to the two ends through the notch grooves, so that the steel belt is well attached to the roller, the transmission efficiency of the sink roller is improved, the liquid zinc is prevented from staying on the roller for a long time to be solidified and scaled, and the uniformity of a zinc coating on the surface of the steel belt is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sinking roll technical field, concretely relates to a kind of corrosion-resistant high wear-resistant sinking roll. BACKGROUND

[0002] Sinking roll is a kind of component in the key role in continuous hot galvanizing production line and other metal surface treatment equipment.

[0003] Sinking roll is located in zinc pot, in hot galvanizing process, steel strip will pass through zinc pot, and sinking roll is immersed in zinc liquid, and steel strip will bypass sinking roll.Its working environment is very bad, to withstand high temperature zinc liquid (zinc liquid temperature is usually at 450-460 ℃ around) erosion and scouring for a long time, lead to zinc liquid excessive solidification or scale on roll surface, in turn make the galvanizing layer of steel strip surface uneven. UTILITARY MODEL

[0004] The utility model aims at providing a kind of corrosion-resistant high wear-resistant sinking roll to solve the above-mentioned shortcomings in prior art.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of corrosion-resistant high wear-resistant sinking roll, including roll shaft, the roll shaft outside is connected with roll cylinder by two symmetrical arrangement's connecting shaft sleeve, the roll shaft is opened with intercommunication passageway, the roll cylinder inner chamber is provided with the threaded tube of end and intercommunication passageway intercommunication, the roll cylinder outer wall is opened with the notch, the notch is successively sprayed with high temperature resistant coating and corrosion resistant coating outside.

[0006] Further, the section of the middle position of the roll cylinder is a demarcation point, and the notches on both sides of the demarcation point are symmetrically arranged.

[0007] Further, the connecting shaft sleeve is fixedly sleeved on the roll shaft, and the connecting shaft sleeve and the inner wall of the roll cylinder are connected by threads.

[0008] Further, a sealing ring is arranged between the connecting shaft sleeve and the roll cylinder.

[0009] Further, the high temperature resistant coating is a phosphorized silicon layer.

[0010] Further, the corrosion resistant coating is a ternary boride ceramic composite powder layer.

[0011] In the above technical solution, the corrosion-resistant high wear-resistant sinking roll provided by the utility model has the following beneficial effects:

[0012] 1. The utility model discloses a submerged roll is set into the structure of the part, makes the cavity of submerged roll inside, utilizes the threaded pipe of communication channel to set in the cavity and transports cooling medium, to control the temperature of submerged roll, can prevent the surface temperature of roll cylinder to be too high, avoids the excessive solidification or scale of zinc liquid on the roll cylinder surface, makes the galvanized layer of steel band surface more uniform, to improve the galvanizing quality of steel band.

[0013] 2. The groove is set up on the outside of roll cylinder, increases the friction between steel band and roll cylinder, and the groove is symmetrical about the middle section of roll cylinder, so that it has good correction ability, at the same time, when steel band and roll cylinder surface contact, the zinc liquid on the two adhering surfaces can be discharged to both ends through the groove, so that steel band and roll cylinder adhere well, improve the transmission efficiency of submerged roll, and avoid the solidification scale of zinc liquid on roll cylinder for a long time, further improve the uniformity of the galvanized layer on the surface of steel band.

[0014] 3. By spraying high-temperature resistant coating and corrosion-resistant coating outside the groove in turn, the durability of submerged roll is greatly enhanced, and the service life of submerged roll is prolonged.

[0015] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the present disclosure.

[0016] The present application provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 The structural schematic diagram provided by the utility model embodiment is provided.

[0019] Figure 2 The internal structure schematic diagram provided by the utility model embodiment is provided.

[0020] Figure 3 The utility model embodiment is provided. Figure 2 The enlarged view of A in the middle.

[0021] Explanation of reference signs:

[0022] 1, roll shaft; 11, communication channel; 2, connecting shaft sleeve; 3, roll cylinder; 4, groove; 5, sealing ring; 6, threaded pipe. DETAILED DESCRIPTION

[0023] In order to make the purposes, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the scope of protection of the present disclosure.

[0024] Please refer to Figures 1-3 An anti-corrosion high-wear-resistance submerged roller comprises a roller shaft 1, a roller cylinder 3 connected to the outer side of the roller shaft 1 through two symmetrically arranged connecting shaft sleeves 2, the connecting shaft sleeves 2 being fixedly sleeved on the roller shaft 1 and being threadedly connected with the inner wall of the roller cylinder 3, and a sealing ring 5 arranged between the connecting shaft sleeve 2 and the roller cylinder 3. Figure 2 Two connecting shaft sleeves 2 are fixedly sleeved on the outer side of each of the roller shafts 1, the two connecting shaft sleeves 2 are threadedly connected with the inner wall of the roller cylinder 3, the roller shaft 1, the connecting shaft sleeve 2 and the roller cylinder 3 are coaxially arranged, the sealing ring 5 is arranged between the connecting shaft sleeve 2 and the roller cylinder 3, the sealing ring 5 is a rubber sealing ring, which blocks the zinc liquid in the outside from entering the cavity of the submerged roller, the sealing ring 5 is replaced when the submerged roller is maintained, a communication channel 11 is formed in the roller shaft 1, a threaded pipe 6, the end of which is in communication with the communication channel 11, is arranged in the inner cavity of the roller cylinder 3, the two ends of the threaded pipe 6 are respectively in communication with the corresponding communication channels 11, and a cooling medium is conveyed into the threaded pipe 6 through the communication channel 11, so that the heat on the roller cylinder 3 is taken away, thereby achieving the purpose of controlling the surface temperature of the roller cylinder 3, preventing the surface temperature of the roller cylinder 3 from being too high, avoiding excessive solidification or fouling of the zinc liquid on the surface of the roller cylinder 3, making the galvanized layer on the surface of the steel strip more uniform, and thereby improving the galvanizing quality of the steel strip; a groove 4 is formed on the outer wall of the roller cylinder 3, and a high-temperature-resistant coating and a corrosion-resistant coating are sprayed on the groove 4 in sequence, the high-temperature-resistant coating is a phosphorized silicon layer, and the corrosion-resistant coating is a ternary boride ceramic composite powder layer, which greatly enhances the durability of the submerged roller and prolongs the service life of the submerged roller.

[0025] Further, the cross section of the middle position of the roller cylinder 3 is a division point, the grooves 4 on the two sides of the cross section are symmetrically arranged, the grooves 4 are formed on the outer side of the roller cylinder 3, the friction between the steel strip and the roller cylinder 3 is increased, the grooves 4 are symmetric about the middle cross section division point of the roller cylinder 3, the roller cylinder 3 has good deviation rectifying ability, when the steel strip contacts the surface of the roller cylinder 3, the zinc liquid on the contact surface of the steel strip and the roller cylinder 3 can be discharged to both ends through the grooves 4, the steel strip and the roller cylinder 3 are well fitted, the transmission efficiency of the submerged roller is improved, and the zinc liquid is prevented from staying on the roller cylinder 3 for a long time to solidify and form fouling, thereby further improving the uniformity of the galvanized layer on the surface of the steel strip.

[0026] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A corrosion-resistant and wear-resistant submerged roller, comprising a roller shaft (1), characterized in that: The roller shaft (1) is connected to a roller (3) by two symmetrically arranged connecting bushings (2) on the outside. A connecting channel (11) is provided inside the roller shaft (1). A threaded tube (6) with its end connected to the connecting channel (11) is provided inside the inner cavity of the roller (3). A groove (4) is provided on the outer wall of the roller (3). A high-temperature resistant coating and a corrosion resistant coating are sprayed on the outside of the groove (4) in sequence.

2. The corrosion-resistant and wear-resistant submerged roller according to claim 1, characterized in that, The cross-section at the middle position of the roller (3) is the dividing point, and the grooves (4) on both sides are symmetrically arranged.

3. The corrosion-resistant and wear-resistant submerged roller according to claim 1, characterized in that, The connecting bushing (2) is fixedly sleeved on the roller (1), and the connecting bushing (2) is connected to the inner wall of the roller (3) by a thread.

4. The corrosion-resistant and wear-resistant submerged roller according to claim 3, characterized in that, A sealing ring (5) is provided between the connecting bushing (2) and the roller (3).

5. The corrosion-resistant and wear-resistant submerged roller according to claim 1, characterized in that, The high-temperature resistant coating is a silicon phosphide layer.

6. The corrosion-resistant and wear-resistant submerged roller according to claim 1, characterized in that, The corrosion-resistant coating is a ternary boride ceramic composite powder layer.

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