Fiber furnace rollers for high temperature annealing furnaces

Abstract

The present invention relates to the field of furnaces used for heat treatment of metal sheets, and in particular to a fiber furnace roller for a high-temperature annealing furnace. A fiber furnace roller for a high-temperature annealing furnace comprises a front roller shaft (11), and is characterized in that it also comprises a rear roller shaft (12), a sleeve (2), a fixed flange (31), a movable flange (32), a clamping ring (33), a fiber tube (34), a guide tube (4) and a water pipe (5), wherein the fixed flange (31) and the movable flange (32) are both sleeved on the outer surface of the sleeve (2), and the fiber tube (34) is coated on the outer surface of the sleeve (2); a guide tube (4) is arranged inside the sleeve (2); and the front end of the water pipe (5) is inserted into the support blind hole (111) of the front roller shaft (11) after passing through the support through hole (121) of the rear roller shaft (12) and the guide tube (4) in sequence. The present invention has a simple structure, is easy to install, has good heat resistance, is easy to maintain, and has a long service life.

Description

Technical Field

[0001] The invention relates to the field of furnaces used for heat treatment of metal sheets, in particular to a fiber furnace roller used in a high-temperature annealing furnace. Background Art

[0002] With the rapid development of modern industry, stainless steel products have developed into high-end products such as nickel-based alloys, titanium plates, bidirectional steel, and plates for nuclear power, and more and more hot-rolled stainless steel plates need to be heat treated to improve material properties. The furnace used for stainless steel heat treatment generally has a relatively high temperature, up to 1200°C, and the hot-rolled stainless steel annealing furnace often needs to be stopped during use, which places very high requirements on the furnace rollers. Under the working conditions of the annealing furnace, the furnace rollers will deform due to frequent heating, cooling, load and cooling, and the stainless steel surface will oxidize under high temperature conditions. At present, most furnace rollers are made of high-nickel heat-resistant steel, which is similar to stainless steel. In this way, the iron oxide powder on the surface of the stainless steel plate will adhere to the surface of the heat-resistant steel furnace roller under high temperature conditions. Long-term use will cause nodules and other problems, thereby affecting the life of the furnace roller or causing scratches on the steel plate surface. Now there is also a fiber furnace roller with heat-resistant fiber coated on the outside of the metal furnace roller put into use. In order to adapt to high-temperature working conditions, fiber furnace rollers are mostly manufactured by pressing the integral forged roller core or fixing the fiber sheet with a double movable flange, which leads to problems such as long furnace roller processing cycle, high cost, and inconvenient fiber sheet installation. Summary of the invention

[0003] In order to overcome the defects of the prior art and provide a high-temperature support member with simple structure, convenient installation, good heat resistance, easy maintenance and long service life, the present invention discloses a fiber furnace roller for a high-temperature annealing furnace.

[0004] The present invention achieves the purpose of the invention through the following technical solutions:

[0005] A fiber furnace roller for a high-temperature annealing furnace comprises a front roller shaft, and is characterized in that it also comprises a rear roller shaft, a sleeve, a fixed flange, a movable flange, a clamping ring, a fiber tube, a guide tube and a water tube.

[0006] A support blind hole is provided on the inner end surface of the front roller shaft, and a support through hole is provided on the rear roller shaft, and the central axes of the front roller shaft, the support blind hole, the rear roller shaft and the support through hole coincide with each other;

[0007] The two ends of the sleeve are respectively sleeved and fixed on the outer sides of the front roller shaft and the rear roller shaft, and the side walls of the two ends of the sleeve are respectively fixed on the side walls of the front roller shaft and the rear roller shaft by positioning pins; an annular sleeve positioning groove is provided on the outer side of the sleeve, the fixed flange and the movable flange are both sleeved on the outer side of the sleeve, the fixed flange is fixed on the outer side of the sleeve, an annular flange positioning groove is provided on one end face of the movable flange, the sleeve positioning groove and the flange positioning groove are aligned with each other to form a positioning groove, the clamping ring is embedded in the positioning groove to fix the movable flange on the outer side of the sleeve, the fiber tube is covered on the outer side of the sleeve and is arranged between the fixed flange and the movable flange, and the outer side surfaces of the fiber tube, the fixed flange and the movable flange are flush;

[0008] A guide tube is provided in the casing, and trumpet-shaped guide openings are provided at both ends of the guide tube. At least two groups of support rods are provided on the outer wall of the guide tube, and each group of support rods includes at least three support rods evenly distributed around the central axis of the guide tube, and the two ends of each group of support rods are respectively connected to the inner wall of the casing and the outer wall of the guide tube;

[0009] The front end of the water pipe is inserted into the supporting blind hole of the front roller shaft through the supporting through hole and the guide tube of the rear roller shaft in sequence. A gap is left between the front end of the water pipe and the bottom of the supporting blind hole. Fixed pads are lined between the inner walls of the supporting through hole, the guide tube and the supporting blind hole and the outer wall of the water pipe.

[0010] The fiber furnace roller used in the high-temperature annealing furnace is characterized in that the two ends of the sleeve are respectively welded to the outer sides of the front roller shaft and the rear roller shaft. During welding, both ends of the sleeve are provided with inner grooves, and the outer sides of the front roller shaft and the rear roller shaft are provided with outer grooves. The inner groove and the outer groove are filled with flux for welding to form a weld.

[0011] The fiber furnace roller for a high-temperature annealing furnace is characterized in that: the intersection angle between the inclined surface of the guide port and the central axis is 30° to 60°; the apertures of the supporting blind hole and the supporting through hole are equal and are both set to a, the inner diameter of the sleeve is set to b, and the outer diameter of the water pipe is set to c, then b∈[2a,4a], c∈[0.5a,0.9a].

[0012] The fiber furnace roller for a high-temperature annealing furnace is characterized in that the fiber tube is made of any one of polyamide fiber, polyester fiber, polyether fiber, polysulfone fiber, polyimide fiber, polyhydrazide fiber, polyoxadiazole fiber, polythiadiazole fiber, polybenzimidazole fiber, polyphenylsulfoneamide fiber, polyimidazole pyrrolidone fiber, polyamide-imide fiber, silicon carbide fiber, boron nitride fiber, carbon fiber, quartz fiber, glass fiber and aluminum silicate fiber.

[0013] When the present invention is installed, the fixed flange is first welded on the outer side of the sleeve, the fiber tube and the movable flange are sleeved on the outer side of the sleeve by a press machine, and the movable flange is compressed to expose the sleeve positioning groove and compress the fiber tube at the same time, and the clamp ring is clamped into the sleeve positioning groove, and the pressure of the press machine on the movable flange is removed. The movable flange moves forward to the clamp ring under the elastic force of the fiber tube, and the clamp ring is clamped into the flange positioning groove, so that the movable flange is fixed on the outer side of the sleeve, and then the outer circle of the fiber tube is ground to the design size. When the present invention is used, the fiber tube is used to support the metal sheet to avoid the defect of the metal furnace roller causing the oxide powder to be bonded on the surface of the metal sheet. One end of the water pipe is connected to the cooling water source. After the cooling water flows out from the other end of the water pipe, it flows into and fills the inner cavity of the sleeve and the gap between the water pipe and the supporting through hole through the gap between the water pipe and the supporting blind hole, so that the cooling water continuously cools the front roller shaft, the rear roller shaft, the sleeve and the fiber tube; the trumpet-shaped guide port is convenient for inserting the water pipe to facilitate maintenance and replacement.

[0014] The invention has the following beneficial effects: simple structure, convenient installation, good heat resistance, convenient maintenance and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional schematic diagram of the present invention;

[0016] Figure 2 It is a cross-sectional schematic diagram of the present invention when no water pipe is provided;

[0017] Figure 3 yes Figure 1 Middle I area and Figure 2 A partial enlarged view of the middle II area. DETAILED DESCRIPTION

[0018] The present invention is further described below by means of specific examples.

[0019] Example 1

[0020] A fiber furnace roller for a high temperature annealing furnace comprises a front roller shaft 11, a rear roller shaft 12, a sleeve 2, a fixed flange 31, a movable flange 32, a clamping ring 33, a fiber tube 34, a guide tube 4 and a water tube 5, such as Figure 1 to Figure 3 As shown, the specific structure is:

[0021] A support blind hole 111 is provided on the inner end surface of the front roller shaft 11, and a support through hole 121 is provided on the rear roller shaft 12. The central axes of the front roller shaft 11, the support blind hole 111, the rear roller shaft 12 and the support through hole 121 coincide with each other.

[0022] The two ends of the sleeve 2 are respectively sleeved and fixed on the outer sides of the front roller shaft 11 and the rear roller shaft 12, and the side walls of the two ends of the sleeve 2 are respectively fixed on the side walls of the front roller shaft 11 and the rear roller shaft 12 by positioning pins 21; an annular sleeve positioning groove 22 is provided on the outer side of the sleeve 2, and the fixed flange 31 and the movable flange 32 are both sleeved on the outer side of the sleeve 2, and the fixed flange 31 is fixed on the outer side of the sleeve 2. An annular flange positioning groove 321 is provided on one end face of the movable flange 32, and the sleeve positioning groove 22 and the flange positioning groove 321 are aligned with each other to form a positioning groove, and the clamping ring 33 is embedded in the positioning groove to fix the movable flange 32 on the outer side of the sleeve 2, and the fiber tube 34 is covered on the outer side of the sleeve 2 and is arranged between the fixed flange 31 and the movable flange 32, and the outer side surfaces of the fiber tube 34, the fixed flange 31 and the movable flange 32 are flush;

[0023] A guide tube 4 is provided in the sleeve 2, and trumpet-shaped guide openings 41 are provided at both ends of the guide tube 4. At least two groups of support rods 42 are provided on the outer wall of the guide tube 4, and each group of support rods 42 includes at least three support rods 42 evenly distributed around the central axis of the guide tube 4, and the two ends of each group of support rods 42 are respectively connected to the inner wall of the sleeve 2 and the outer wall of the guide tube 4;

[0024] The front end of the water pipe 5 is inserted into the support blind hole 111 of the front roller shaft 11 through the support through hole 121 of the rear roller shaft 12 and the guide tube 4 in sequence. A gap is left between the front end of the water pipe 5 and the bottom of the support blind hole 111. The inner walls of the support through hole 121, the guide tube 4 and the support blind hole 111 and the outer wall of the water pipe 5 are lined with fixing pads 51.

[0025] In this embodiment, the two ends of the sleeve 2 are respectively welded to the outer sides of the front roller shaft 11 and the rear roller shaft 12. Figure 3 As shown: both ends of the sleeve 2 are provided with inner grooves 23, and the outer sides of the front roller shaft 11 and the rear roller shaft 12 are provided with outer grooves 13, and the inner grooves 23 and the outer grooves 13 are filled with flux 14 to form a weld.

[0026] The intersection angle between the inclined surface of the guide opening 41 and the central axis is 30° to 60°, and is 45° in this embodiment; the apertures of the supporting blind hole 111 and the supporting through hole 121 are equal and are both set to a, the inner diameter of the sleeve 3 is set to b, and the outer diameter of the water pipe 5 is set to c, then b∈[2a,4a], c∈[0.5a,0.9a], and in this embodiment, b=3a, c=0.8a.

[0027] The fiber tube 34 can be made of any one of polyamide fiber, polyester fiber, polyether fiber, polysulfone fiber, polyimide fiber, polyhydrazide fiber, polyoxadiazole fiber, polythiadiazole fiber, polybenzimidazole fiber, polyphenylsulfoneamide fiber, polyimidazole pyrrolidone fiber, polyamide-imide fiber, silicon carbide fiber, boron nitride fiber, carbon fiber, quartz fiber, glass fiber and aluminum silicate fiber, and is required to be able to withstand the high temperature in the annealing furnace.

[0028] When installing this embodiment, the fixed flange 31 is first welded to the outer surface of the sleeve 2, and the fiber tube 34 and the movable flange 32 are sleeved on the outer surface of the sleeve 2 by a press machine and the movable flange 32 is compressed to expose the sleeve positioning groove 22 and compress the fiber tube 32. At this time, the position of the movable flange 32 is as shown in FIG. Figure 1 As shown in a, after the clamping ring 33 is inserted into the sleeve positioning groove 22, the pressure of the press on the movable flange 32 is released. The movable flange 32 moves forward to the clamping ring 33 under the elastic force of the fiber tube 32, and the clamping ring 33 is inserted into the flange positioning groove 321, thereby fixing the movable flange 32 on the outer surface of the sleeve 2, and then grinding the outer circle of the fiber tube 32 to the designed size. When this embodiment is used, the fiber tube 34 is used to support the metal sheet to avoid the defect of the metal furnace roller causing the oxide powder to adhere to the surface of the metal sheet. One end of the water pipe 5 is connected to the cooling water source. After the cooling water flows out from the other end of the water pipe 5, it flows into and fills the inner cavity of the sleeve 2 and the gap between the water pipe 5 and the supporting through hole 121 through the gap between the water pipe 5 and the supporting blind hole 111, so that the cooling water continuously cools the front roller shaft 11, the rear roller shaft 12, the sleeve 2 and the fiber tube 34; the trumpet-shaped guide port 41 is convenient for inserting the water pipe 5 for maintenance and replacement.

Claims

1. A fiber furnace roller for a high-temperature annealing furnace, comprising a front roller shaft (11), a rear roller shaft (12), a sleeve (2), a fixed flange (31), a movable flange (32), a clamping ring (33), a fiber tube (34), a guide tube (4) and a water tube (5), A support blind hole (111) is provided on the inner end surface of the front roller shaft (11), a support through hole (121) is provided on the rear roller shaft (12), and the central axes of the front roller shaft (11), the support blind hole (111), the rear roller shaft (12) and the support through hole (121) coincide with each other; The two ends of the sleeve (2) are respectively sleeved and fixed on the outer sides of the front roller shaft (11) and the rear roller shaft (12), and the side walls of the two ends of the sleeve (2) are respectively fixed on the side walls of the front roller shaft (11) and the rear roller shaft (12) by positioning pins (21); an annular sleeve positioning groove (22) is provided on the outer side of the sleeve (2), and the fixed flange (31) and the movable flange (32) are both sleeved on the outer side of the sleeve (2), and the fixed flange (31) is fixed on the outer side of the sleeve (2), and the movable flange (32) is fixed on the outer side of the sleeve (2). An annular flange positioning groove (321) is provided on one end surface of the sleeve (2), the sleeve positioning groove (22) and the flange positioning groove (321) are aligned with each other to form a positioning groove, a clamping ring (33) is embedded in the positioning groove to fix the movable flange (32) on the outer side surface of the sleeve (2), a fiber tube (34) is covered on the outer side surface of the sleeve (2) and is arranged between the fixed flange (31) and the movable flange (32), and the outer side surfaces of the fiber tube (34), the fixed flange (31) and the movable flange (32) are flush; A guide tube (4) is provided in the sleeve (2), and trumpet-shaped guide openings (41) are provided at both ends of the guide tube (4). At least two groups of support rods (42) are provided on the outer wall of the guide tube (4), and each group of support rods (42) includes at least three support rods (42) evenly distributed around the central axis of the guide tube (4), and the two ends of each group of support rods (42) are respectively connected to the inner wall of the sleeve (2) and the outer wall of the guide tube (4); The front end of the water pipe (5) is inserted into the support blind hole (111) of the front roller shaft (11) through the support through hole (121) of the rear roller shaft (12) and the guide tube (4) in sequence, a gap is left between the front end of the water pipe (5) and the bottom of the support blind hole (111), and a fixing pad (51) is lined between the inner side walls of the support through hole (121), the guide tube (4) and the support blind hole (111) and the outer side wall of the water pipe (5); The two ends of the sleeve (2) are respectively welded to the outer sides of the front roller shaft (11) and the rear roller shaft (12). During welding, both ends of the sleeve (2) are provided with inner grooves (23), and the outer sides of the front roller shaft (11) and the rear roller shaft (12) are provided with outer grooves (13). The inner grooves (23) and the outer grooves (13) are filled with flux (14) to form a weld. The intersection angle between the inclined surface of the guide opening (41) and the central axis is 30° to 60°; the apertures of the supporting blind hole (111) and the supporting through hole (121) are equal and are both set to a, the inner diameter of the sleeve (2) is set to b, and the outer diameter of the water pipe (5) is set to c, then b∈[2a,4a], c∈[0.5a,0.9a]; The fiber tube (34) is made of any one of polyamide fiber, polyester fiber, polyether fiber, polysulfone fiber, polyimide fiber, polyhydrazide fiber, polyoxadiazole fiber, polythiadiazole fiber, polybenzimidazole fiber, polyphenylsulfoneamide fiber, polyimidazole pyrrolidone fiber, polyamide-imide fiber, silicon carbide fiber, boron nitride fiber, carbon fiber, quartz fiber, glass fiber and aluminum silicate fiber; Its characteristics are: First, the fixed flange (31) is welded to the outer surface of the sleeve (2), and the fiber tube (34) and the movable flange (32) are sleeved on the outer surface of the sleeve (2) by a press machine, and the movable flange (32) is compressed to expose the sleeve positioning groove (22) and compress the fiber tube (34) at the same time, and the clamping ring (33) is inserted into the sleeve positioning groove (22) and then the pressure of the press machine on the movable flange (32) is released. The movable flange (32) moves forward to the clamping ring (33) under the elastic force of the fiber tube (34), and the clamping ring (33) is inserted into the flange positioning groove (321), thereby fixing the movable flange (32) on the outer surface of the sleeve (2), and then grinding the outer circle of the fiber tube (34) to the designed size; The fiber tube (34) is used to support the metal plate. One end of the water pipe (5) is connected to a cooling water source. After the cooling water flows out from the other end of the water pipe (5), it flows into and fills the inner cavity of the sleeve (2) and the gap between the water pipe (5) and the supporting blind hole (111) through the gap between the water pipe (5) and the supporting through hole (121), so that the cooling water continuously cools the front roller shaft (11), the rear roller shaft (12), the sleeve (2) and the fiber tube (34). The trumpet-shaped guide port (41) is convenient for inserting the water pipe (5) to facilitate maintenance and replacement.

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