Furnace pier in chamber type solid melting furnace

Abstract

The utility model discloses a furnace pier in a chamber type solid melting furnace. The furnace pier comprises a furnace pier body and a ceramic column, the furnace pier body is a long cube and comprises a furnace pier upper surface structure, and the furnace pier upper surface structure comprises a plurality of mounting grooves which are arranged in parallel; the number of the ceramic columns is configured to be consistent with that of the mounting grooves, each ceramic column is horizontally placed in the corresponding mounting groove, and the side, back to the corresponding mounting groove, of each ceramic column is higher than the upper structure of the furnace pier. According to the utility model, pits and pits generated on the surface of the duplex stainless steel plate during heat treatment in the chamber type solid melting furnace can be reduced, the yield is improved, the process links are reduced, and the processing cost is correspondingly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel plate processing, in particular to a furnace pier in a chamber type solid melting furnace. Background Art

[0002] A chamber solid solution furnace is an industrial furnace equipment that can be used for heat treatment of stainless steel plates. When solid solution treating stainless steel plates, the steel plates are heated to 1000℃-1100℃ and kept warm for a long enough time to melt the carbides of ordinary 304 stainless steel into the austenite, and then quickly cooled (water quenched) to obtain a single-phase austenite structure at room temperature. In practice, the stainless steel plates placed in the chamber solid solution furnace are usually placed on the inner furnace pier. In order to achieve the heating of the stainless steel plates, the inner furnace pier described in the prior art is usually saddle-shaped. Duplex stainless steel (DSS for short) is a type of stainless steel with approximately 50% ferrite and 50% austenite each, and has excellent pitting corrosion resistance. However, compared with ordinary stainless steel, duplex stainless steel has lower high-temperature thermoplasticity. Therefore, when it is placed on a traditional furnace pier for heating, the upper surface of the pier adheres to the oxide scale on the stainless steel plate, resulting in pitting and dents on the lower surface of the duplex stainless steel plate, which affects the surface processing quality. To treat these pitting and dents, additional processing steps are required in subsequent processes, increasing processing costs. Therefore, how to develop a new chamber-type solid solution furnace pier to overcome the above-mentioned problems in the existing technology is a direction that needs further research by those skilled in the art. Utility Model Content

[0003] The purpose of the utility model is to provide a furnace pier in a chamber type solid solution furnace, which can reduce the pitting and pitting on the surface of a duplex stainless steel plate during heat treatment in the chamber type solid solution furnace, improve the yield, reduce the process links, and correspondingly reduce the processing cost.

[0004] The utility model discloses a furnace pier in a chamber type solid solution furnace for processing duplex stainless steel plates, which comprises:

[0005] The grate main body includes a grate upper structure, and the grate upper structure is provided with a plurality of mounting slots arranged parallel to each other;

[0006] The furnace pier body is in the shape of an elongated cube, and includes a furnace pier upper structure, and the furnace pier upper structure includes a plurality of mounting grooves arranged parallel to each other;

[0007] Ceramic columns, the number of which is configured to be consistent with the number of the mounting slots, one radial side of each ceramic column is placed horizontally in one of the mounting slots, and the other radial side of each ceramic column extends out of the mounting slot.

[0008] By adopting this technical solution:

[0009] Preferably, the mounting groove is a semi-cylindrical groove; the ceramic column is a cylindrical body; and the groove radius of the mounting groove is configured to match the column radius of the ceramic column. Here, the groove radius of the mounting groove matches the column radius of the ceramic column, which means that the groove radius of the mounting groove is 0.5-1.5 mm larger than the column radius of the ceramic column, so that the lower half of the ceramic column can be placed in the groove of the mounting groove and the ceramic column can achieve radial rotation relative to the mounting groove.

[0010] Preferably, the ceramic column is a cylinder with chamfered edges at both ends.

[0011] Preferably, the upper surface of the grate pier body is provided with 8 mounting grooves arranged parallel to each other.

[0012] Preferably, the eight mutually parallel mounting grooves are evenly distributed on the upper surface of the grate pier of the grate pier body; and the spacing between adjacent mounting grooves is 350 mm-400 mm.

[0013] Compared to existing technologies, the present invention achieves contact and support for the duplex stainless steel plate within the chamber-type solid solution furnace during heat treatment by placing the ceramic column on the furnace. This prevents the oxide scale from adhering between the upper side of the furnace pier body and the lower surface of the duplex stainless steel plate. This reduces the pitting and denting on the surface of the duplex stainless steel plate during heat treatment in the chamber-type solid solution furnace, thereby improving the yield rate, reducing the number of process steps, and correspondingly reducing processing costs. Furthermore, the present invention can reduce surface scratches on the duplex stainless steel plate during placement on the furnace pier body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the top structure of Example 1.

[0015] Figure 2 Schematic side view of the ceramic column.

[0016] Figure 3 This is a schematic diagram of the usage status of Example 1 in a chamber-type solid melting furnace.

[0017] In the figure, the component names corresponding to the reference numerals are as follows:

[0018] 100. Furnace pier body; 110. Mounting groove; 200. Ceramic column; 300. Chamber-type solid solution furnace; 400. Material conveying roller; 310. Furnace door; 320. Heating mechanism; 330. Furnace chamber. DETAILED DESCRIPTION

[0019] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0020] Example 1, please refer to Figure 1-3 :

[0021] A chamber type solid solution furnace core, comprising: a core body 100 and eight ceramic columns 200.

[0022] The grate body 100 is in the shape of an elongated cube and includes a grate top structure comprising eight parallel mounting slots 110. These eight parallel mounting slots 110 are evenly spaced on the grate top structure of the grate body 100. Specifically, the spacing between adjacent mounting slots 110 is configured to be 350 mm to 400 mm.

[0023] The mounting groove 110 is a semi-cylindrical groove, and the ceramic pillars 200 are cylindrical; the groove radius of the mounting groove 110 is configured to match the column radius of the ceramic pillars 200. In other words, the radial sides of the eight ceramic pillars 200 (i.e., the lower semi-circular portion of their cross-section) are each placed horizontally in a mounting groove 110, while the radial sides of the eight ceramic pillars 200 (i.e., the upper semi-circular portion of their cross-section) are higher than the upper structure of the grate pier body 100.

[0024] In this example, in order to prevent scratches on the lower side of the duplex stainless steel plate during movement, the ceramic column 200 is further configured as a cylinder with chamfered edges at both ends.

[0025] In practice, 15-17 chamber-type solid-melting furnace piers are arranged in a straight line within the furnace chamber 330 of the chamber-type solid-melting furnace 300. A material conveying roller 400 is provided on the outer side of the furnace body of the chamber-type solid-melting furnace 300, extending in a direction parallel to the straight line in which the 15-17 chamber-type solid-melting furnace piers are arranged. A furnace door 310 is provided between the material conveying roller 400 and each of the chamber-type solid-melting furnace piers. When a duplex stainless steel plate needs to be heated, the duplex stainless steel plate to be processed is first moved along the material conveying roller 400 to a position close to the furnace door 310. The furnace door 310 is then opened, and the duplex stainless steel plate on the material conveying roller 400 is pushed into the furnace chamber 330 and placed on the ceramic pillars 200. The furnace door 310 is then closed, and the heating mechanism 320 is controlled to heat the furnace chamber 330 of the chamber-type solid-melting furnace 300. At this time, eight ceramic pillars 200 are used to separate the upper surface of the grate pier body 100 from the lower surface of the duplex stainless steel plate, thereby preventing the upper surface of the grate pier body 100 from adhering to the oxide scale on the lower surface of the duplex stainless steel plate. This further reduces pitting and concavities generated on the surface of the duplex stainless steel plate during heat treatment in the furnace 330, thereby improving the yield rate, reducing process steps, and correspondingly reducing processing costs.

[0026] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they will still fall within the scope of protection of the present invention.

Claims

1. A furnace pier in a chamber type solid melting furnace, characterized in that: include: The grate body is in the shape of an elongated cube and includes a grate upper structure. The grate upper structure includes a plurality of mounting slots arranged parallel to each other. Ceramic columns, the number of which is configured to be consistent with the number of the mounting slots, each of which is placed horizontally in one of the mounting slots, and the side of each of the ceramic columns facing away from the mounting slot is higher than the upper structure of the grate pier of the grate pier body.

2. The furnace pier in the chamber type solid solution furnace according to claim 1, characterized in that: The mounting groove is a semi-cylindrical groove; the ceramic column is a cylinder; and the groove radius of the mounting groove is configured to match the column radius of the ceramic column.

3. The furnace pier in the chamber type solid solution furnace according to claim 2, characterized in that: The ceramic column is a cylinder with chamfered edges at both ends.

4. The furnace pier in the chamber type solid solution furnace according to claim 3, characterized in that: The upper surface of the furnace pier body is provided with 8 mounting grooves arranged parallel to each other.

5. The furnace pier in the chamber type solid solution furnace according to claim 4, characterized in that: The eight mutually parallel mounting grooves are evenly distributed on the upper surface of the grate pier of the grate pier body; and the spacing between adjacent mounting grooves is 350mm-400mm.

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