Assembled trays for high temperatures

Abstract

The utility model relates to the field of heat treatment equipment. An assembled tray for use at high temperatures includes alloy bars, round bars, locking nuts and bushings. The assembled tray has mutually perpendicular alloy bars and round bars forming a grid structure. Adjacent alloy bars are separated by bushings. The round bars pass through the round holes and bushings on the alloy bars in sequence. Locking nuts are connected at both ends of the round bars. The locking nuts fix the alloy bars and bushings on the round bars. The assembled tray can adapt to furnaces of different sizes. When making trays of non-standard sizes, mold casting is not required. The cost of processing, manufacturing, maintenance and replacement of the required components is low, the processing cycle is short, and the efficiency of assembling the tray is high.

Description

Technical Field

[0001] The utility model relates to the field of heat treatment equipment, in particular to a material tray used under high temperature. Background Art

[0002] Vacuum heat treatment is often required in mechanical processing. During vacuum heat treatment, the workpiece needs to be placed on a tray in a vacuum furnace. However, most of the trays are currently cast in one piece. There are often no corresponding trays for unconventional workpiece sizes, and new molds need to be cast. In this way, unconventional workpieces need to wait for trays, which increases the processing time and processing costs. Moreover, the cast-in-one trays are often impossible to repair or replace after being damaged, resulting in waste. Utility Model Content

[0003] The purpose of the utility model is to provide an assembled material tray for use under high temperature to solve the above technical problems.

[0004] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0005] An assembled material tray for use at high temperatures comprises alloy bars, round rods, locking nuts and bushings, wherein the assembled material tray comprises at least two mutually perpendicular alloy bars and at least two round rods forming a grid structure; the assembled material tray comprises at least two mutually parallel alloy bars, at least two alloy bars being provided with corresponding round holes; at least two round rods being parallel to each other; one of the round rods passes through the corresponding round holes on at least two alloy bars, thereby at least two alloy bars and at least two round rods forming a grid structure; adjacent alloy bars are separated by bushings, the round rods pass through the round holes and bushings on the alloy bars in turn, and locking nuts are provided at both ends of the round rods to fix the alloy bars and the bushings on the round rods.

[0006] The utility model adopts the method of assembling to separate the alloy bars with bushings, and fastens them into a whole through round bars and locking nuts. The assembled processing and manufacturing of the material tray can adapt to more sizes of furnaces. When the material trays of different sizes are needed, there is no need to open molds for casting. Only alloy bars and round bars of different sizes are needed to quickly assemble the material trays of the required sizes. The processing and manufacturing cost is low and the processing cycle is short. When the assembled material tray is partially damaged, it will not cause the whole to be scrapped. Only the scrapped parts need to be replaced and it can be put into production and use. The maintenance and replacement efficiency is high.

[0007] Furthermore, the round rod is made of high temperature resistant stainless steel 316 material and has a diameter of 8 to 16 mm.

[0008] The assembled tray described in the utility model is a workpiece tray working in a vacuum heat treatment furnace, so it needs to adapt to high temperature scenes. The stainless steel 316 material can work in a temperature range of 800 to 1300°C, and the material has high cost performance and good machinability. Therefore, the use of stainless steel 316 material can reduce manufacturing costs.

[0009] Furthermore, the alloy strip is made of high temperature resistant stainless steel 316 material, the width of the alloy strip is 6 to 10 mm greater than the round rod used, and the thickness is 5 to 25 mm.

[0010] The utility model is suitable for furnaces of different sizes, and according to different factors such as the size and weight of the heat-treated workpiece, from an economic point of view, the diameter of the round rod can be selected in the range of 8 to 16 mm. Therefore, the width of the alloy bar also needs to be determined according to the round rods of different diameters to ensure that a certain distance from the hole to both sides of the alloy bar can be retained after the hole is opened, and different thicknesses need to be selected according to different load-bearing capacity.

[0011] Furthermore, the bushing is made of high temperature resistant stainless steel 316 material, the inner diameter of the bushing is 2 to 3 mm larger than the outer diameter of the round rod, and the outer diameter of the bushing is not larger than the width of the alloy strip.

[0012] The bushing needs to allow the round rod to pass through and also needs to play a load-bearing role. Therefore, the inner diameter of the bushing and the outer diameter of the round rod are a clearance fit, and the outer diameter of the bushing is best flush with the alloy bar after passing through the round rod, so as to form an overall support and load-bearing function.

[0013] Furthermore, the length of the bushing is 20 to 80 mm, and the center distance between the circular holes on the alloy strip is ±2 mm of the bushing length.

[0014] The spacing of the grids for trays of different sizes is different. The spacing of the alloy bars is controlled by the length of the bushing, and the center distance of the holes of the alloy bars is standardized, which indirectly controls the spacing of the round bars. The formed grid is a square, so the weight of the workpiece is evenly distributed on the tray. At the same time, the existence of the grid is also conducive to more uniform heating of the workpiece as a whole on the tray.

[0015] Furthermore, the locking nut is a metric nut made of high-temperature resistant stainless steel 316 material, and is matched with nuts of M8 to M16 according to different diameters of the round rod.

[0016] The locking nut works in a high temperature environment and also needs to be made of high temperature resistant stainless steel 316 material. The locking nut uses a metric nut for easy processing and replacement.

[0017] Furthermore, the radius of the tray is r, the length of the bushing is d, and the length of the alloy strip and round rod between the Nth bushing is

[0018] For a circular material tray, the sizes of different alloy strips are related to the grid positions, and the farther from the center of the circle, the shorter the size. The utility model provides the relationship between the radius of the material tray, the length of the bushing and the grid position.

[0019] The utility model adopts an assembly method to assemble round bars and alloy bars into a material tray. The gaps between the alloy bars are separated by bushings and the two ends are locked with nuts. The beneficial effects are:

[0020] 1. The assembled tray can adapt to furnaces of different sizes. When making non-standard trays, there is no need for mold casting. The required alloy bars, round bars, bushings and nuts have low processing and manufacturing costs, short processing cycles and high assembly efficiency.

[0021] 2. When part of it is damaged, you only need to replace the corresponding part to continue using it, and the maintenance and replacement efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0023] Figure 1 It is a schematic diagram of the assembled material tray of the utility model;

[0024] Figure 2 It is a front view of the alloy strip of the utility model.

[0025] Explanation of symbols:

[0026] 1. Alloy bar; 2. Round bar; 3. Lock nut; 4. Bushing; 10. Round hole. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more understandable, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Secondly, the "one embodiment" or "embodiment" referred to herein refers to a specific feature, structure or characteristic that can be included in at least one implementation of the utility model. The "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Reference Figure 1 , Figure 2 As shown, an assembled material tray for use at high temperatures includes an alloy strip 1, a round rod 2, a locking nut 3 and a bushing 4. The assembled material tray has at least two mutually perpendicular alloy strips 1 and at least two round rods 2 forming a grid structure; the assembled material tray includes at least two mutually parallel alloy strips 1, and at least two alloy strips 1 are correspondingly provided with round holes 10; at least two round rods 2 are parallel to each other; one of the round rods 2 passes through the corresponding round holes 10 provided on at least two alloy strips 1, and then at least two alloy strips 1 and at least two round rods 2 form a grid structure; adjacent alloy strips 1 are separated by bushings 4, and the round rods 2 pass through the round holes 10 and the bushings 4 on the alloy strips 1 in turn, and locking nuts 3 are connected at both ends of the round rods 2, and the locking nuts 3 fix the alloy strips 1 and the bushing 4 on the round rods 2.

[0032] In this embodiment, the alloy bars 1 are separated by bushings 4 and connected and fastened into a whole by round bars 2 and locking nuts 3. Assembled processing and manufacturing of trays can adapt to more furnace sizes. When trays of different sizes are needed, there is no need to open molds for casting. Only alloy bars 1 and round bars 2 of different sizes are needed to quickly assemble trays of the required size. The processing and manufacturing cost is low and the processing cycle is short. When the assembled tray is partially damaged, it will not cause the entire tray to be scrapped. Only the scrapped parts need to be replaced and it can be put into production and use, and the maintenance and replacement efficiency is high.

[0033] The round rod 2 is made of high temperature resistant stainless steel 316 and has a diameter of 8 to 16 mm.

[0034] In this embodiment, the assembled tray is a workpiece tray working in a vacuum heat treatment furnace, so it needs to adapt to high temperature scenes. Chromium-based alloys have high high temperature resistance, among which stainless steel 316 material can work in the temperature range of 800 to 1300°C, and the material has high cost performance and good machinability. Therefore, the use of stainless steel 316 material can reduce manufacturing costs.

[0035] The alloy strip 1 is made of high temperature resistant stainless steel 316 material. The width of the alloy strip 1 is 26 to 10 mm greater than the round rod used, and the thickness is 5 to 25 mm.

[0036] In this embodiment, the material tray needs to be suitable for furnaces of different sizes, and based on different factors such as the size and weight of the heat-treated workpiece, from an economic point of view, the diameter of the round rod 2 can be selected to a suitable size within the range of 8 to 16 mm. Therefore, the alloy strip 1 also needs to determine the width according to the round rods 2 of different diameters to ensure that a certain distance from the hole to both sides of the alloy strip 1 can be retained after the hole is opened, and different thicknesses need to be selected according to different load-bearing capacity.

[0037] The bushing 4 is made of high temperature resistant stainless steel 316. The inner diameter of the bushing 4 is 2-3 mm larger than the outer diameter of the round rod 2 , and the outer diameter of the bushing 4 is not larger than the width of the alloy strip 1 .

[0038] In this embodiment, the bushing 4 needs to allow the round rod 2 to pass through and also needs to play a load-bearing role. Therefore, the inner diameter of the bushing 4 and the outer diameter of the round rod 2 are clearance fit, and the outer diameter of the bushing 4 is preferably flush with the alloy bar 1 after passing through the round rod 2, so as to form an overall support and load-bearing function.

[0039] The length of the bushing 4 is 20-80 mm, and the center distance between the circular holes 10 on the alloy strip 1 is ±2 mm of the length of the bushing 4 .

[0040] In this embodiment, the spacing of the grids of the trays of different sizes is different. The spacing of the alloy bars 1 is controlled by the length of the bushing 4. At the same time, the center distance of the openings of the alloy bars 1 is standardized, which indirectly controls the spacing of the round bars 2. The formed grid is a square, so that the weight of the workpiece is evenly distributed on the tray. At the same time, the existence of the grid is also conducive to more uniform heating of the workpiece as a whole on the tray.

[0041] The locking nut 3 is a metric nut made of high temperature resistant stainless steel 316 material, and is matched with nuts of M8 to M16 according to different diameters of the round rod 2.

[0042] In this embodiment, the locking nut 3 works in a high temperature environment and also needs to be made of high temperature resistant stainless steel 316 material. The locking nut 3 is a metric nut for ease of processing and replacement.

[0043] The radius of the material tray is r, the length of the bushing 4 is d, and the length of the alloy strip 1 and the round rod 2 separated by the Nth bushing 4 is

[0044] In this embodiment, for a circular material tray, the sizes of different alloy strips 1 are related to the grid positions, and the farther from the center of the circle, the shorter the size. The utility model provides the relationship between the radius of the material tray, the length of the bushing 4 and the grid position.

[0045] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0046] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. The assembled tray for high temperature includes alloy bars, round bars, locking nuts and bushings, and is characterized by: The assembled tray has at least two mutually perpendicular alloy strips and at least two round bars forming a grid structure; The invention comprises at least two alloy strips parallel to each other, and at least two of the alloy strips are provided with circular holes correspondingly; At least two round bars are parallel to each other; One of the round rods passes through the corresponding round holes on at least two alloy strips, so that the at least two alloy strips and the at least two round rods form a grid structure; Adjacent alloy bars are separated by bushings, and the round rod passes through the round holes and bushings on the alloy bars in sequence. Locking nuts are connected at both ends of the round rod, and the locking nuts fix the alloy bars and bushings on the round rod.

2. The assembled tray for use at high temperatures according to claim 1, characterized in that: The round rod is made of high temperature resistant stainless steel 316 material and has a diameter of 8 to 16 mm.

3. The assembled tray for use at high temperatures according to claim 2, characterized in that: The alloy strip is made of high temperature resistant stainless steel 316 material. The width of the alloy strip is 6 to 10 mm greater than the round rod used, and the thickness is 5 to 25 mm.

4. The assembled tray for use at high temperature according to claim 3, characterized in that: The bushing is made of high temperature resistant stainless steel 316 material, the inner diameter of the bushing is 2-3 mm larger than the outer diameter of the round rod, and the outer diameter of the bushing is not larger than the width of the alloy strip.

5. The assembled tray for use at high temperatures according to claim 4, characterized in that: The length of the bushing is 20-80 mm, and the center distance between the circular holes on the alloy strip is ±2 mm of the bushing length.

6. The assembled tray for use at high temperatures according to claim 2, characterized in that: The locking nut is a metric nut made of high temperature resistant stainless steel 316 material, and is matched with nuts of M8 to M16 according to different diameters of the round rod.

7. The assembled tray for use at high temperatures according to claim 1, characterized in that: The radius of the tray is r, the length of the bushing is d, and the length of the alloy strip and round rod between the Nth bushing is

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