Solid solution heat treatment tool for large-size ultrathin plate

Abstract

The utility model discloses a solid solution heat treatment tool for a large-size ultrathin plate. Wherein the upper steel plate framework is welded and fixed in the upper steel square tube outer frame so as to define a plurality of rectangular areas for mounting the upper steel sheets, and first round through holes are uniformly formed in the upper steel sheets; the lower steel plate framework is welded and fixed in the lower steel square tube outer frame so as to define a plurality of rectangular areas for mounting the lower steel sheets, and second round through holes are uniformly formed in the lower steel sheets; two pairs of upper fixing cylinders are arranged outside a pair of side pipe walls of the upper steel square pipe outer frame, the four lower fixing cylinders are sleeved with the ring portions of the four ring eye hooks, the hook portions of the ring eye hooks are clamped on the upper fixing cylinders, and the ultra-thin plate is clamped between the upper clamping plate set and the lower clamping plate set. According to the utility model, the problems of distortion, warping and wrinkling of the large-size ultra-thin plate caused by stress in the material in the solid solution heat treatment process due to non-uniform cooling speed of each part when the large-size ultra-thin plate vertically enters water in the solid solution heat treatment are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of manufacturing tooling for metal pressed parts, in particular to a tooling for solid solution heat treatment of large-size ultra-thin plates. Background Art

[0002] In recent years, with the development of various industries, various requirements for materials are also gradually increasing: in the aerospace industry, in addition to high requirements for performance indicators, various aircraft and their accessories are also required to be large in size and lightweight. In addition, the 3C electronic product market is developing rapidly, and the application volume of various ultra-thin electronic accessories has increased sharply, and the demand is huge. Therefore, large-size ultra-thin sheets have shown great market demand in various fields such as aerospace, 3C electronic products, optical devices, and automobiles, and their related indicators such as dimensional uniformity, flatness, and mechanical properties have received widespread attention.

[0003] However, large-sized ultra-thin sheets have many problems in the preparation process, such as poor flatness and substandard mechanical properties, which cannot meet the use requirements. In order to meet the requirements of performance indicators, ultra-thin sheets often need to be heat treated to improve performance. Traditional heat treatment requires heating the sheet at high temperature and keeping it at a constant temperature for a certain period of time, and then cooling it quickly (quenching) to obtain a supersaturated solid solution. However, due to problems such as too fast cooling rate and uneven cooling rate on the surface of the material, it is difficult for ultra-thin sheets to enter water during conventional water-cooled quenching, which will inevitably cause large internal stress inside the sheet, resulting in strong deformation of the sheet, especially ultra-thin sheets, during the heat treatment process, and problems such as distortion, warping, and wrinkling, and subsequent treatment cannot effectively improve the plate shape of large-sized ultra-thin sheets. In addition, traditional heat treatment is affected by other factors such as insulation temperature, insulation time, transfer time, cooling medium temperature, etc., and the mechanical properties of the material after heat treatment are unstable. If the cooling rate is too slow or the insulation temperature is too low, the mechanical properties of the sheet will drop sharply and cannot meet the use requirements.

[0004] At present, there are two main types of solution heat treatment methods commonly used for ultra-thin plates. One is to replace the cooling medium. The cooling methods include water cooling, oil cooling, air cooling, chemical reagent cooling, etc. Different media have different cooling rates, and different cooling methods can be adopted according to performance requirements and actual needs. However, cooling media other than water are generally expensive and difficult to preserve. There are also problems such as unstable solution effect, poor plate shape, and unstable mechanical properties, which cannot stably meet the product plate shape and performance indicators. Another solution heat treatment method is to use tooling for solution heat treatment. Most of the conventional heat treatment tools are for block materials. For large-sized ultra-thin plates, the transfer time is too long and the plate temperature drops rapidly, resulting in low plate temperature and poor mechanical properties during solution.

[0005] Therefore, the traditional solution heat treatment process is difficult to meet the plate shape and performance requirements of large-sized ultra-thin plates, and the plate shape control has received extensive attention. It is urgent to design a suitable large-sized ultra-thin plate solution heat treatment tooling to ensure the mechanical properties of the plate while controlling the plate shape, reduce the distortion, warping, wrinkles and other phenomena of the plate, and facilitate subsequent processing to meet application requirements. Utility Model Content

[0006] Aiming at the problems of poor plate shape and poor mechanical properties of large-sized ultra-thin plates during solid solution treatment in the background technology, the utility model provides a large-sized ultra-thin plate solid solution heat treatment tooling, the technical scheme is: comprising: an upper steel square tube outer frame, an upper steel sheet, an upper fixed cylinder, an upper steel plate skeleton, a lower steel square tube outer frame, a lower steel sheet, a lower fixed cylinder, a lower steel plate skeleton, a lower cylindrical baffle, an ultra-thin plate and an eye hook, the upper steel plate skeleton is welded and fixed in the upper steel square tube outer frame to enclose a number of rectangular areas for installing the upper steel sheet, and the upper steel sheet is evenly provided with first round through holes; the lower end faces of the upper steel square tube outer frame, the upper steel sheet and the upper steel plate skeleton are located in the same plane;

[0007] The lower steel plate frame is welded and fixed in the lower steel square tube outer frame to enclose a number of rectangular areas for installing the lower steel sheet, and the lower steel sheet is evenly provided with second round through holes; the upper end surfaces of the lower steel square tube outer frame, the lower steel sheet and the lower steel plate frame are located in the same plane;

[0008] Two pairs of upper fixed cylinders are provided outside a pair of side tube walls of the upper steel square tube outer frame, and two pairs of lower fixed cylinders are provided outside a pair of side tube walls of the lower steel square tube outer frame; an upper fixed cylinder and a lower fixed cylinder form a group for installing an eye hook, the ring parts of the four eye hooks are sleeved on the outside of the four lower fixed cylinders, and the axial position is determined by the lower cylinder baffle fixed to the outer end of the lower fixed cylinder, the hook part of the eye hook is clamped on the upper fixed cylinder, and the ultra-thin plate is clamped between the upper splint group and the lower splint group, the upper splint group is composed of the upper steel square tube outer frame, the upper steel sheet and the upper steel plate frame, and the lower splint group is composed of the lower steel square tube outer frame, the lower steel sheet and the lower steel plate frame.

[0009] The upper steel square tube outer frame, the upper steel sheet, the upper steel plate frame, the steel plate frame, the lower steel square tube outer frame and the lower steel sheet are all made of heat-resistant steel.

[0010] The length×width×thickness of the upper steel square tube outer frame and the lower steel square tube outer frame are all: (0.8~1.2)m×(0.8~1.2)m×20mm.

[0011] The length×width×thickness of the upper steel sheet and the lower steel sheet is: (400~600)mm×(400~600)mm×2.0mm.

[0012] The diameters of the first circular through hole and the second circular through hole are equal.

[0013] The diameters of the first round through hole and the second round through hole are 25 to 50 mm.

[0014] The thickness of the upper steel plate frame and the steel plate frame is 2.0mm.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. It solves the problem that the uneven cooling rate of various parts of large-sized ultra-thin plates during solid solution heat treatment causes stress inside the material during the solid solution heat treatment, which in turn causes distortion, warping and wrinkling of large-sized ultra-thin plates; at the same time, it has a thermal insulation effect on large-sized ultra-thin plates, solving the problem of unstable mechanical properties caused by poor thermal insulation effect when the plates are passed through water without tooling.

[0017] 2. The tooling uses a covering tooling to apply a certain stress to large-size ultra-thin plates, reduce the deformation of ultra-thin plates caused by solution heat treatment, and at the same time have a certain thermal insulation effect on the plates.

[0018] 3. The tooling is designed with round holes to facilitate water to fully contact the material surface during solid solution, increase the cooling rate, and ensure the mechanical properties of the plate.

[0019] 4. Both sides of the tooling can be fixed to facilitate loading and unloading of the plate before and after solution treatment.

[0020] 5. The tooling is simple to process, easy to load and unload, and can be reused. The large-size ultra-thin plates obtained have good flatness, excellent mechanical properties, no distortion, warping, wrinkles, etc., and can be used for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front perspective schematic diagram of an embodiment of a large-size ultra-thin plate solution heat treatment tooling of the utility model;

[0022] Figure 2 A side view schematic diagram of an embodiment of the utility model;

[0023] Figure 3 It is a partial top view schematic diagram of the upper steel square tube outer frame in the embodiment of the utility model.

[0024] Among them: 4-ultra-thin plate, 5-eye hook, 11-upper steel square tube outer frame, 12-upper steel sheet, 13-upper fixed cylinder, 16-upper steel plate frame, 21-lower steel square tube outer frame, 22-lower steel sheet, 23-lower fixed cylinder, 26-lower steel plate frame, 27-lower cylindrical baffle, 51-ring part, 52-hook part, 121-first round through hole, 221-second round through hole. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1 The embodiment of the utility model shown comprises: an upper steel square tube outer frame 11, an upper steel sheet 12, an upper fixed cylinder 13, an upper steel plate skeleton 16, a lower steel square tube outer frame 21, a lower steel sheet 22, a lower fixed cylinder 23, a lower steel plate skeleton 26, a lower cylindrical baffle 27, an ultra-thin plate 4 and an eye hook 5, the upper steel plate skeleton 16 is welded and fixed in the upper steel square tube outer frame 11 to enclose a plurality of rectangular areas for welding and installing the upper steel sheet 12, and the upper steel sheet 12 is evenly provided with first round through holes 121 for facilitating full contact between the ultra-thin plate 4 and water during solid solution; the lower end faces of the upper steel square tube outer frame 11, the upper steel sheet 12 and the upper steel plate skeleton 16 are located in the same plane, and the welded upper steel square tube outer frame 11, the upper steel sheet 12 and the upper steel plate skeleton 16 form an upper splint group;

[0027] The lower steel plate frame 26 is welded and fixed in the lower steel square tube outer frame 21 to enclose a plurality of rectangular areas for welding and installing the lower steel sheet 22. The lower steel sheet 22 is evenly provided with second round through holes 221 for facilitating the full contact between the ultra-thin plate 4 and water during solid solution. The upper end surfaces of the lower steel square tube outer frame 21, the lower steel sheet 22 and the lower steel plate frame 26 are located in the same plane. The welded lower steel square tube outer frame 21, the lower steel sheet 22 and the lower steel plate frame 26 form a lower clamping plate group.

[0028] Two pairs of upper fixed cylinders 13 are provided outside a pair of side tube walls of the upper steel square tube outer frame 11, and two pairs of lower fixed cylinders 23 are provided outside a pair of side tube walls of the lower steel square tube outer frame 21; an upper fixed cylinder 13 and a lower fixed cylinder 23 are formed as a group for installing an eye hook 5, the ring portion 51 of the eye hook 5 is sleeved outside the lower fixed cylinder 23, and the axial position is determined by the lower cylindrical baffle 27 fixed to the outer end of the lower fixed cylinder 23, the hook portion 52 of the eye hook 5 is clamped on the upper fixed cylinder 13, and the entire tooling is fixed by assembling the eye hook 5, the upper fixed cylinder 13 and the lower fixed cylinder 23. After assembly, the ultra-thin plate 4 is clamped between the upper splint group and the lower splint group and fixed. During use, the tooling with the plate is placed in a heating furnace and kept warm. After the insulation is completed, the tooling is dropped into water when passing through water.

[0029] The upper steel square tube outer frame 11, the upper steel sheet 12, the upper steel plate frame 16, the steel plate frame 26, the lower steel square tube outer frame 21 and the lower steel sheet 22 are all made of heat-resistant steel. The heat-resistant steel has good thermal cycle ability and strong heat deformation resistance, and can limit the deformation of large-sized ultra-thin plates, thereby achieving the purpose of reducing the deformation of ultra-thin plates during solution heat treatment; the upper steel plate frame 16 and the lower steel plate frame 26 will respectively divide the interior of the upper steel square tube outer frame 11 and the lower steel square tube outer frame 21 into 4 rectangular areas of equal or unequal sizes, and each area is respectively installed with a steel sheet, and the sizes of the upper steel sheet 12 and the lower steel sheet 22 are: (400-600) mm×(400-600) mm×2.0 mm (length×width×thickness), and the diameters of the first round through hole 121 and the second round through hole 221 are equal, and the diameter range is (25-50) mm;

[0030] The dimensions of the upper steel square tube outer frame 11 and the lower steel square tube outer frame 21 are (0.8-1.2)m×(0.8-1.2)m×20mm (length×width×thickness); the thickness of the upper steel plate frame 16 and the steel plate frame 26 are both 2.0mm;

[0031] The thickness of the eye hook at its thinnest point is no less than 20mm, which facilitates loading and unloading of the plate before and after solution treatment and ensures a certain processing efficiency.

[0032] It is convenient for water to fully contact the surface of the ultra-thin plate during solid solution, thereby increasing the cooling speed and ensuring the mechanical properties of the plate.

[0033] The ultra-thin plate 4 is an aluminum-based composite material, and the plate size is 0.8m×0.8m×0.3mm, 1m×1m×0.2mm, or 1.2m×1.2m×0.5mm when specifically used. The specific material used is a particle-reinforced aluminum-based composite material, wherein the volume fraction of ceramic particles is 15-30%, and the types of ceramic particles are one or more of SiC, B4C, Al2O3, etc.; the aluminum matrix is ​​6xxx series aluminum alloy, 7xxx series aluminum alloy, 2xxx series aluminum alloy or 5xxx series aluminum alloy.

[0034] When using,

[0035] Assemble first: that is, put the large-sized ultra-thin plate between the upper clamping plate group and the lower clamping plate group, and then use the eye hook to fix the upper clamping plate group and the lower clamping plate group, so that the covering tooling applies a certain stress to the large-sized ultra-thin plate.

[0036] Then heat it up: put the tooling with the plates into a heating furnace and keep it warm.

[0037] Then put it into water to cool down: that is, after the insulation is completed, take out the tooling with the board and immediately drop it vertically into the water.

[0038] Finally, take out the ultra-thin sheet: after the tooling and water temperature are stable, take out the sheet in the tooling for subsequent processing.

[0039] When cooling in water, manual placement can be used. Since the present embodiment can be stacked in batches in the height direction, batch solution heat treatment can also be performed by hoisting or the like.

Claims

1. A solution heat treatment tool for large-size ultra-thin plates, characterized in that: include: An upper steel square tube outer frame (11), an upper steel sheet (12), an upper fixed cylinder (13), an upper steel plate frame (16), a lower steel square tube outer frame (21), a lower steel sheet (22), a lower fixed cylinder (23), a lower steel plate frame (26), a lower cylinder baffle (27), an ultra-thin plate (4) and an eye hook (5); the upper steel plate frame (16) is welded and fixed in the upper steel square tube outer frame (11) to enclose a plurality of rectangular areas for installing the upper steel sheet (12); the upper steel sheet (12) is evenly provided with first round through holes (121); the lower end surfaces of the upper steel square tube outer frame (11), the upper steel sheet (12) and the upper steel plate frame (16) are located in the same plane; The lower steel plate frame (26) is welded and fixed in the lower steel square tube outer frame (21) to enclose a plurality of rectangular areas for mounting the lower steel sheet (22), and the lower steel sheet (22) is evenly provided with second round through holes (221); the upper end surfaces of the lower steel square tube outer frame (21), the lower steel sheet (22) and the lower steel plate frame (26) are located in the same plane; Two pairs of upper fixed cylinders (13) are arranged outside a pair of side tube walls of the upper steel square tube outer frame (11), and two pairs of lower fixed cylinders (23) are arranged outside a pair of side tube walls of the lower steel square tube outer frame (21); one upper fixed cylinder (13) and one lower fixed cylinder (23) form a group for mounting an eye hook (5), and the ring parts (51) of the four eye hooks (5) are sleeved outside the four lower fixed cylinders (23) and fixed to the outer ends of the lower fixed cylinders (23) The fixed lower cylindrical baffle (27) determines the axial position, the hook portion (52) of the eye hook (5) is clamped on the upper fixed cylinder (13), and the ultra-thin plate (4) is clamped between the upper clamping plate group and the lower clamping plate group. The upper clamping plate group is composed of an upper steel square tube outer frame (11), an upper steel sheet (12) and an upper steel plate frame (16), and the lower clamping plate group is composed of a lower steel square tube outer frame (21), a lower steel sheet (22) and a lower steel plate frame (26).

2. A solution heat treatment tool for large-size ultra-thin plates according to claim 1, characterized in that: The upper steel square tube outer frame (11), the upper steel sheet (12), the upper steel plate framework (16), the steel plate framework (26), the lower steel square tube outer frame (21) and the lower steel sheet (22) are all made of heat-resistant steel.

3. A large-size ultra-thin plate solution heat treatment tooling according to claim 1 or 2, characterized in that: The length×width×thickness of the upper steel square tube outer frame (11) and the lower steel square tube outer frame (21) are: 0.8~1.2m×0.8~1.2m×20mm.

4. A solution heat treatment tool for large-size ultra-thin plates according to claim 1 or 2, characterized in that: The length×width×thickness of the upper steel sheet (12) and the lower steel sheet (22) are: 400-600mm×400-600mm×2.0mm.

5. A solution heat treatment tool for large-size ultra-thin plates according to claim 1 or 2, characterized in that: The diameters of the first circular through hole (121) and the second circular through hole (221) are equal.

6. A solution heat treatment tool for large-size ultra-thin plates according to claim 5, characterized in that: The diameters of the first round through hole (121) and the second round through hole (221) are 25 to 50 mm.

7. A solution heat treatment tool for large-size ultra-thin plates according to claim 1 or 2, characterized in that: The thickness of the upper steel plate frame (16) and the steel plate frame (26) are both 2.0 mm.

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