A flexible device for preventing deformation of a cylinder type casting during heat treatment

Abstract

The utility model relates to a kind of cylinder class casting heat treatment anti-deformation flexible device.The utility model includes support ring and support rod, support rod is multiple, all with support ring swing joint, support rod includes tray and support screw rod, spring is provided outside tray, tray is sleeved in the front end of support screw rod by spring, hole is provided on support ring, support screw rod passes the hole of support ring, and between support ring, using thread connection.The utility model can control product deformation, support and constrain product in radial direction, and also can adhere to support with curved surface shape on curved surface position, effectively prevent large deformation when product solid solution treatment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing, and specifically refers to the heat treatment anti-deformation tooling technology for medium and large aluminum alloy cylindrical castings with a length-to-diameter ratio greater than 3:1, and in particular, a flexible device for heat treatment anti-deformation of cylindrical castings. Background Technology

[0002] After casting, aluminum alloy cylindrical castings require heat treatment to ensure their mechanical properties meet the requirements of service conditions. A solution-aging composite process is commonly used. The specific procedure is as follows: first, the casting is heated to the solution temperature and held for a specific time, followed by rapid cooling to obtain a supersaturated solid solution; then, the temperature is raised to the aging temperature and held for a specified time to promote the precipitation of strengthening phases in the matrix, thereby ensuring the casting's strength and toughness.

[0003] During the heat treatment process, aluminum alloy cylindrical castings experience thermal stress, structural stress, and residual stress due to factors such as cross-sectional temperature gradients, uneven wall thickness, and abrupt diameter changes, leading to casting deformation. To suppress the degree of deformation during the heat treatment stage, the industry typically employs measures such as rigid fixing of the casting, application of specialized tooling, and precise control of process parameters to effectively manage the amount of casting deformation.

[0004] In the existing technology, there is a scheme to use annular support units to provide radial support for the unreinforced areas of the outer wall of the cylinder. However, such technology can only constrain the product deformation in the radial dimension, making it difficult to control product variables, product deformation, and the overall deformation of the product effectively. Utility Model Content

[0005] The purpose of this invention is to provide a flexible device to prevent deformation during heat treatment of cylindrical castings, which solves the problem of deformation during heat treatment of medium and large aluminum alloy cylindrical castings with a length-to-diameter ratio greater than 3:1 in the prior art.

[0006] The technical solution of this utility model is as follows: This utility model is a flexible device for preventing deformation during heat treatment of cylindrical castings. Its special feature is that the flexible device for preventing deformation during heat treatment of cylindrical castings includes a support ring and a support rod. There are multiple support rods, all of which are movably connected to the support ring.

[0007] Furthermore, the strut includes a tray and a support screw. A spring is provided on the outside of the tray, and the tray is sleeved on the front end of the support screw through the spring. A hole is provided on the support ring, and the support screw passes through the hole of the support ring and is threadedly connected to the support ring.

[0008] Furthermore, a rotating block is provided at the rear end of the support screw.

[0009] Furthermore, the inner surface of the tray is curved.

[0010] Furthermore, multiple struts are evenly distributed on the support ring.

[0011] Furthermore, both the support rings and the support rods are made of 310S stainless steel.

[0012] Furthermore, there are six struts.

[0013] Furthermore, the heat treatment anti-deformation flexible device for cylindrical castings consists of multiple sets.

[0014] This utility model provides a flexible device for preventing deformation during heat treatment of cylindrical castings, consisting of support rings and support rods. Multiple support rods are movably connected to the support rings. In use, the support rings are slipped onto the outer side of the product from both ends, and the support rods are rotated so that the tops of the support rods fit snugly against the outer wall of the product. Therefore, the beneficial effects of this utility model are:

[0015] 1) Controlling product deformation: For large cylindrical products, compared with the traditional placement method, this utility model provides radial support and constraint for the product, and can also fit and support the curved surface position according to the curved surface shape, effectively preventing large deformation of the product during solution treatment.

[0016] 2) Wide range of applications: Relying on the adjustable function of this utility model in actual operation, it can be applied to various large cylindrical casting products.

[0017] 3) Low manufacturing cost. The material used in this utility model is 310S stainless steel. 310S stainless steel has the advantages of strong high-temperature oxidation resistance, stable structure and good creep resistance. It can be used for a long time at temperatures above 600℃. The structure of this utility model is simple and the processing and manufacturing costs are low. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a top-view schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the strut structure of this utility model;

[0021] Figure 4 This is a side view of the example product supported by this utility model;

[0022] Figure 5 This is a top-down view of the example product supported by this utility model.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. Support ring; 2. Support rod; 3. Cylindrical castings;

[0025] 201. Tray; 202. Spring; 203. Support screw; 204. Rotating block. Detailed Implementation

[0026] The overall scheme of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] See Figure 1 , 2 The structure of this utility model in a specific embodiment includes a support ring 1 and support rods 2. There are multiple support rods 2, all of which are movably connected to the support ring 1. In this embodiment, there are six support rods 2, symmetrically distributed on the support ring 1. Both the support ring 1 and the support rods 2 are made of 310S stainless steel. The heat treatment anti-deformation flexible device for cylindrical castings of this utility model can also be in multiple sets; in this embodiment, there are four sets.

[0028] See Figure 3 The structure of the support rod 2 in this utility model includes a tray 201 and a support screw 203. A spring 202 is provided on the outer side of the tray 201. The tray 201 is sleeved on the front end of the support screw 203 through the spring 202. The spring 202 provides elastic force, so that the tray 201 at the top of the support screw 203 can fit tightly against the outer wall of the product. A hole is provided on the support ring 1, and the support screw 203 passes through the hole of the support ring 1. The middle and rear part of the support screw 203 is provided with external threads, and the inner side of the hole is provided with internal threads. The support screw 203 is threadedly connected to the support ring 1. The spring 202 is sleeved on the front part of the support screw 203 without external threads. The front end of the spring 202 is engaged with the end of the external thread of the support screw 203. A rotating block 204 is provided at the rear end of the support screw 203 to rotatably support the support screw 203. In order to better fit tightly against the outer wall of the product, the inner surface of the tray 201 is an arc-shaped surface.

[0029] See Figure 4 , 5 Taking a cylindrical casting 3 as an example, the product has a maximum diameter of 550mm and a height of 1200mm. As can be seen from the structural diagram, the diameter of the product remains basically unchanged, there are multiple reinforcing ribs on the outside, the thickness does not change much, and the difference in dimensional change in the radial direction during heat treatment is not significant. The amount of heat treatment deformation of the device before and after use can be observed.

[0030] The specific method for using the heat treatment product of this utility model is as follows:

[0031] 1. Insert the four support rings 1 into the outer side of the cylindrical casting 3 from both ends, and rotate the support screw 203 so that the top of the support screw 203 can be tightly attached to the outer wall of the cylindrical casting 3.

[0032] 2. Based on the external structure of the cylindrical casting 3, place a tray 201 of the corresponding diameter on the top of the support screw 203, and initially adjust the rotating block 204 so that the outline formed by connecting multiple trays 201 is basically the same as the outline size of the cylindrical casting 3.

[0033] 3. Place the tooling consisting of this utility model and the cylindrical casting 3 onto the moving frame of the heat treatment furnace, and ensure that the tooling is basically in the center of the moving frame and that the side of the tooling is basically parallel to the side of the moving frame.

[0034] 4. Check the position of all pallets 201. For pallets 201 that are not tightly fitted to the product shape, adjust the feed length of the support screw 203 by rotating the rotating block 204 so that all pallets 201 can tightly fit the product shape.

[0035] 5. Check if the specifications of each pallet 201 are appropriate. For pallets 201 with unsuitable diameter, reverse the rotating block 204 and back the support screw 203. After replacing with a suitable pallet 201, rotate the rotating block 204 in the forward direction so that the pallet 201 fits tightly against the product shape.

[0036] 6. By tightening the screws on the calipers, first fix one end of the clamp to the caliper on one side of the cylindrical casting 3, pull the clamp tight, and then tighten the fixing screws on the other side of the caliper to ensure that the clamp can tighten the cylindrical casting 3.

[0037] 7. After confirming that everything is correct, proceed with the heat treatment process in the furnace.

[0038] The content of this utility model and the technical content not specifically described in the above embodiments are the same as the prior art.

[0039] The above are merely specific embodiments disclosed in this utility model, but the scope of protection disclosed in this utility model is not limited thereto. The scope of protection disclosed in this utility model shall be determined by the scope of protection of the claims.

Claims

1. A flexible device for preventing deformation during heat treatment of cylindrical castings, characterized in that: The heat treatment deformation prevention flexible device for cylindrical castings includes a support ring and multiple support rods, all of which are movably connected to the support ring.

2. The flexible device for preventing deformation during heat treatment of cylindrical castings according to claim 1, characterized in that: The support rod includes a tray and a support screw. A spring is provided on the outside of the tray. The tray is sleeved on the front end of the support screw by the spring. A hole is provided on the support ring. The support screw passes through the hole of the support ring and is threadedly connected to the support ring.

3. The flexible device for preventing deformation during heat treatment of cylindrical castings according to claim 2, characterized in that: A rotating block is provided at the rear end of the support screw.

4. The heat treatment deformation prevention flexible device for cylindrical castings according to claim 3, characterized in that: The inner surface of the tray is an arc surface.

5. The flexible device for preventing deformation during heat treatment of cylindrical castings according to claim 4, characterized in that: Multiple struts are evenly distributed on the support ring.

6. The flexible device for preventing deformation during heat treatment of cylindrical castings according to claim 5, characterized in that: Both the support ring and the support rod are made of 310S stainless steel.

7. The flexible device for preventing deformation during heat treatment of cylindrical castings according to claim 6, characterized in that: There are six support rods.

8. The flexible device for preventing deformation during heat treatment of cylindrical castings according to claim 7, characterized in that: The heat treatment anti-deformation flexible device for cylindrical castings consists of multiple sets.

Images