A multi-tiered lay-up heat treatment frame
By designing a multi-layer heat treatment frame, using 304 steel and an internal grid, and adding ribs and diagonal support ribs, the problem of easy deformation of the heat treatment frame at high temperatures was solved, and uniform heating and efficient heat treatment of parts were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FAGOR EDERLAN AUTO PARTS KUNSHAN CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-02
AI Technical Summary
Existing heat treatment frames are prone to structural deformation under high-temperature environments, which can cause the metal materials or parts to shift, affecting the uniformity of the heat treatment effect. Furthermore, they cannot process multiple parts simultaneously, resulting in low heat treatment efficiency.
It adopts a multi-layer frame structure consisting of left and right side enclosures, front and rear side enclosures and bottom enclosure, and is made of 304 steel. It has internal grid and support partitions, and adds ribs, diagonal support ribs and balance ribs to improve stability and torsional resistance, and ensure that the parts are heated evenly.
It achieves uniform heating of parts in high-temperature environments, improves heat treatment efficiency and quality, prevents frame deformation, ensures surface smoothness of parts, and reduces hoisting energy consumption.
Smart Images
Figure CN224313583U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat treatment technology, specifically, it demonstrates a multi-layer heat treatment frame. Background Technology
[0002] In the metal processing industry, heat treatment is a crucial process for improving the properties of metallic materials. During heat treatment, the metal material or part needs to be placed in a specific support device for heating, holding, and cooling within the heat treatment furnace. This support device is called the heat treatment frame.
[0003] Currently, most heat treatment frames are temporarily used with simple frames. For example, Chinese patent publication number CN209128495U proposes a high-temperature resistant and deformation-resistant heat treatment frame. The heat treatment frame includes cavity one, cavity two and cavity three. There are partitions between cavity one and cavity two, and cavity two and cavity three. On the side of the heat treatment frame away from the connecting column, there is a pull-out baffle made of nickel-based alloy material that is used in conjunction with cavity one, cavity two and cavity three.
[0004] Existing heat treatment frames are insufficient in terms of structural strength and stability. When used for a long time in a high-temperature environment, the frame structure is prone to deformation, which causes the position of the metal materials or parts being supported to shift during the heat treatment process, affecting the uniformity of the heat treatment effect. Moreover, existing heat treatment frames cannot process multiple parts at the same time, resulting in low heat treatment efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a multi-layer heat treatment frame to at least solve the above-mentioned technical problems.
[0006] The technical solution is as follows:
[0007] A multi-layer heat treatment frame includes a rectangular frame with an open top, consisting of a pair of left and right side enclosures, a pair of front and rear side enclosures, and a bottom seal, wherein:
[0008] The left and right side enclosures are composed of multiple No. 1 profiles welded together in a vertical and horizontal manner. At least one support partition is provided on the inner wall of each vertical No. 1 profile, and the support partitions on several No. 1 profiles are arranged side by side.
[0009] The front and rear side barriers are formed by welding together at least four No. 2 profiles;
[0010] The bottom sealing is composed of several horizontal No. 3 profiles and a pair of vertical No. 3 profiles welded together;
[0011] The left and right side barriers are welded to the front and rear side barriers, and the left and right side barriers and the front and rear side barriers are welded to the bottom barrier respectively;
[0012] Grid mesh is installed on the inner sides of the left and right side fencing, the front and rear side fencing, and the bottom enclosure.
[0013] In addition, the above embodiments of this utility model may also have the following additional technical features:
[0014] According to one embodiment of this utility model, a rib is provided between the bottom end of the support spacer and the inner wall of the first profile. The rib enhances the load-bearing capacity of the support spacer on the weight of the parts, preventing the support spacer from breaking at the root or sagging under long-term high temperatures.
[0015] Based on this technical solution, the edges of the placement spacer are smoothly designed. Smooth edges eliminate sharp corners, protect the surface finish of precision parts, and prevent scratches on the parts' surface.
[0016] According to one embodiment of this utility model, a right-angled edge strip is provided at the connection position between the left and right side enclosures and the front and rear side enclosures. The right-angled edge strip can suppress the radial expansion deformation of the entire frame corner under high temperature, maintain the structural stability of the cuboid frame, and prevent the whole structure from tilting and damaging the cuboid structure.
[0017] According to one embodiment of this utility model, diagonal support ribs are added to the front and rear lateral enclosures. This can suppress the resonance deformation of the frame caused by mechanical vibration inside the furnace during heat treatment and improve the torsional resistance of the front and rear lateral enclosures.
[0018] Based on this technical solution, the diagonal support ribs are in the shape of a figure eight, an inverted figure eight, or an X. The triangular or fork-shaped stabilizing structure can achieve good rigidity in the front and rear lateral enclosures with less material, reducing the overall weight of the frame and thus lowering hoisting energy consumption.
[0019] According to one embodiment of this utility model, a balancing rib is provided between the top middle of the pair of left and right lateral fencing. The balancing rib can restrain the top of the pair of opposing left and right lateral fencing from expanding outward under long-term high temperature, so as to ensure the verticality of the frame. At the same time, it also provides a clear stress point for hoisting work and avoids the risk of frame overturning caused by hoisting from one side.
[0020] According to one embodiment of this utility model, several supporting bottom beams are further provided below the bottom seal. The supporting bottom beams span the width of the bottom seal, distributing the weight of the parts to be processed to the edge of the frame, preventing the center of the bottom seal from collapsing and deforming. In addition, the supporting bottom beams can also raise the bottom surface of the frame, reducing the contact area with the furnace bed or carbon deposit area, and protecting the cleanliness of the parts inside the heat treatment frame.
[0021] According to one embodiment of this utility model, the No. 1, No. 2, and No. 3 profiles are all made of 304 stainless steel. This gives the frame excellent high-temperature strength, oxidation resistance, and thermal fatigue resistance, enabling it to work stably for extended periods in the high-temperature environment of a heat treatment furnace. It is less prone to deformation, cracking, or oxidation corrosion, and is more resistant to deformation and corrosion than carbon steel, significantly extending its service life.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0023] 1. The heat treatment frame adopts an open frame structure, consisting of a pair of left and right side enclosures, a pair of front and rear side enclosures, and a bottom sealing block, forming a stable three-dimensional frame to ensure that the parts can be heated evenly during the heat treatment process, while facilitating the loading and unloading of parts and the transfer of heat.
[0024] 2. Several shelf partitions are used to form a multi-layered placement area inside the heat treatment frame, that is, several shelf partitions in the same row form a placement area for placing parts, so as to reasonably arrange the number and placement of parts and improve the efficiency and quality of heat treatment.
[0025] 3. Distribute grids evenly around the perimeter and bottom of the heat treatment frame to ensure that the hot air flow inside the heat treatment furnace can flow smoothly through the interior of the heat treatment frame, so that all parts are heated evenly and to avoid performance differences caused by local overheating or uneven heat dissipation. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;
[0027] Figure 2 for Figure 1 Schematic diagrams related to the left and right lateral enclosure sections;
[0028] Figure 3 for Figure 2 A partial schematic diagram of the spacer components;
[0029] Figure 4 for Figure 1 Schematic diagrams related to the front and rear lateral enclosure sections;
[0030] Figure 5 for Figure 1 The diagram shows the relevant information regarding the bottom sealing section.
[0031] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present utility model;
[0032] Figure 7 This is a schematic diagram of the structure of the third embodiment of the present utility model;
[0033] The relevant markings in the attached diagram are: 1-left and right side fencing, 2-front and rear side fencing, 3-bottom enclosure, 4-grid, 5-right-angle edging strip, 6-balancing rib strip; 11-profile one, 12-supporting partition, 13-rib, 21-profile two, 22-diagonal support rib, 31-profile three, 32-supporting bottom beam. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] Example 1:
[0036] Reference Figure 1 As shown in the figure. This embodiment proposes a multi-layer heat treatment frame, which mainly includes a pair of opposing left and right side enclosures 1, a pair of opposing front and rear side enclosures 2, and a bottom sealing block 3. The pair of left and right side enclosures 1, the pair of front and rear side enclosures 2, and the bottom sealing block 3 enclose a rectangular frame with an open top.
[0037] See Figure 2 As shown, a single left and right side enclosure 1 is composed of multiple No. 1 profiles 11 welded together in a vertical and horizontal manner, forming a rectangular shape. At least one shelf 12 is provided on the inner wall of each vertical No. 1 profile 11. In this embodiment, two shelf 12s are provided on the inner wall of a single vertical No. 1 profile 11, spaced vertically apart. The distance between adjacent shelf 12s is assembled according to actual needs. It is worth noting that the shelf 12s on several No. 1 profiles 11 on the left and right side enclosure 1 are arranged side by side, and a pair of shelf 12s on the left and right side enclosure 1 are corresponding one-to-one. That is to say, the arrangement of these shelf 12s allows a total of three layers of placement area to be formed inside the heat treatment frame. The two ends of the parts can be placed on the shelf 12s located on the same layer, so that the parts are placed horizontally inside the heat treatment frame.
[0038] See Figure 4 As shown, the front and rear side enclosures 2 are welded together by at least four No. 2 profiles 21. Similarly, the front and rear side enclosures are also rectangular in shape. No partitions are set on the front and rear side enclosures. For the purpose of reducing costs, this will not affect the placement of parts inside the heat treatment frame.
[0039] See Figure 5As shown, the bottom seal 3 is composed of several horizontal No. 3 profiles 31 and a pair of vertical No. 3 profiles 31 welded together, and the bottom seal also presents a rectangular structure.
[0040] The left and right side enclosures 1 and the front and rear side enclosures 2, as well as the left and right side enclosures 1 and the front and rear side enclosures 2 and the bottom sealing block 3, are all welded together. In order to improve the high temperature resistance of the heat treatment frame, the main body of the heat treatment frame, namely the left and right side enclosures, the front and rear side enclosures, and the bottom sealing block, are all made of 304 stainless steel. At the same time, in order to ensure the performance of the welded parts, welding wires or welding rods that match the main body material are selected to ensure that the performance of the welded parts is equivalent to that of the base material, thereby ensuring the overall structural strength of the heat treatment frame.
[0041] In addition, metal mesh 4 is installed on the inner sides of the left and right side enclosures 1, the front and rear side enclosures 2, and the bottom sealing block 3 as ventilation holes. Obviously, the mesh is fixed to the left and right side enclosures, the front and rear side enclosures, or the bottom sealing block by welding. The design of the mesh around the perimeter can optimize the distribution of heat in the heat treatment frame, improve heat utilization efficiency, and reduce the production cost of enterprises to a certain extent.
[0042] Combination Figure 2 As shown, the support partition itself serves as the main support for the parts to be processed. It is necessary to ensure that the support partition has a certain stability. Since the support partition and the No. 1 profile are not integrally molded, the connection between the two may break. In order to further ensure the support effect of the support partition, a rib 13 is provided between the bottom end of the support partition 12 and the inner wall of the No. 1 profile 11. If the rib is arranged vertically and is triangular, the rib 13 can transfer the load to the main structure of the No. 1 profile, avoiding mechanical fatigue caused by local stress concentration in the support partition. This significantly improves the load-bearing capacity of the support partition for the weight of the parts and prevents the support partition from breaking at the root or sagging under long-term high temperature.
[0043] The shelf is made of the same material as the heat treatment frame, namely 304 steel. Its surface is machined flat and the edges are polished smooth to prevent scratching the parts during the heat treatment process and to ensure the surface finish of the precision parts.
[0044] See Figure 4As shown, diagonal support ribs 22 are added to the front and rear lateral enclosures 2. In this embodiment, the diagonal support ribs 22 are designed in the shape of an inverted V-shape. Of course, other diagonal support ribs can also be used, such as V-shape, X-shape, etc. The diagonal support ribs can suppress the resonance deformation of the frame caused by mechanical vibration in the furnace during heat treatment, improve the torsional resistance of the front and rear lateral enclosures, and prevent the front and rear lateral enclosures from tilting. In addition, the diagonal support ribs achieve good rigidity of the front and rear lateral enclosures with less material, thereby reducing the total weight of the frame and reducing energy consumption during hoisting to a certain extent.
[0045] Example 2:
[0046] The difference from the above embodiment 1 lies in the design of the welding parts of the left and right side barriers and the front and rear side barriers.
[0047] Reference Figure 6 As shown, a right-angle edging strip 5 is installed at the upper part of the connection position between the left and right side enclosures 1 and the front and rear side enclosures 2, usually by welding. The right-angle edging strip can suppress the radial expansion deformation of the entire frame corner under high temperature, maintain the structural stability of the cuboid frame, and prevent the whole frame from tilting and damaging the cuboid structure of the heat-treated frame body.
[0048] Example 3:
[0049] The difference between this and the technical solutions of Embodiments 1 and 2 above lies in the design between a pair of left and right side barriers.
[0050] See Figure 7 As shown, a balancing rib 6 is installed between the top center of a pair of left and right lateral fencing 1, preferably located in the exact center of the left and right lateral fencing 1. The balancing rib can restrain the top of the pair of opposing left and right lateral fencing from expanding outwards under long-term high temperature, so as to ensure the verticality of the frame. At the same time, it also provides a clear stress point for hoisting work and avoids the risk of frame overturning caused by hoisting from one side.
[0051] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.
[0053] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A multi-layer heat treatment frame, characterized in that, It includes a rectangular frame with an open top, consisting of a pair of left and right side enclosures (1), a pair of front and rear side enclosures (2), and a bottom enclosure (3), wherein: The left and right side enclosures (1) are composed of multiple No. 1 profiles (11) welded together vertically and horizontally. At least one partition (12) is provided on the inner wall of each vertical No. 1 profile (11), and the partitions (12) on several No. 1 profiles (11) are arranged side by side. The front and rear side enclosures (2) are formed by welding together at least four No. 2 profiles (21); The bottom sealing (3) is composed of several transverse No. 3 profiles (31) and a pair of longitudinal No. 3 profiles (31) welded together; The left and right side enclosures (1) are welded to the front and rear side enclosures (2), and the left and right side enclosures (1) and the front and rear side enclosures (2) are welded to the bottom enclosure (3). A grid (4) is provided on the inner sides of the left and right side enclosures (1), the front and rear side enclosures (2), and the bottom enclosure (3).
2. The multi-layer heat treatment frame according to claim 1, characterized in that, A rib (13) is provided between the bottom end of the placement partition (12) and the inner wall of the first profile (11).
3. The multi-layer heat treatment frame according to claim 2, characterized in that, The edges of the shelf (12) are smoothly arranged.
4. The multi-layer heat treatment frame according to claim 1, characterized in that, Right-angle edging strips (5) are provided at the connection positions of the left and right side enclosures (1) and the front and rear side enclosures (2).
5. A multi-layer heat treatment frame according to claim 1, characterized in that, The front and rear lateral enclosures (2) are provided with additional diagonal support ribs (22).
6. A multi-layer heat treatment frame according to claim 5, characterized in that, The diagonal support bar (22) is in the shape of a figure eight, an inverted figure eight, or an X.
7. A multi-layer heat treatment frame according to claim 1, characterized in that, A balancing rib (6) is provided between the top middle of the pair of left and right side enclosures (1).
8. A multi-layer heat treatment frame according to claim 1, characterized in that, Several supporting bottom beams (32) are also provided below the bottom sealing (3).
9. A multi-layer heat treatment frame according to claim 1, characterized in that, The No. 1 profile (11), No. 2 profile (21), and No. 3 profile (31) are all made of 304 steel.