Method for upsetting metal sheet based on multi-medium rapid heating and cooling system

Abstract

The invention provides a method for upsetting a metal sheet based on a multi-medium rapid heating and cooling system, and the multi-medium rapid heating and cooling system can realize rapid heating and cooling of a die by controlling a medium entering a pipeline in the upsetting die. The method comprises the steps that a metal sheet to be upset is placed between a female die core of an upsetting die and a side pressing sliding block, and the die is closed; according to the material of the metal sheet, a corresponding medium is selected through a multi-medium rapid heating and cooling system to pass through a pipeline in the mold, and the mold is preheated to the operation temperature; after the operation temperature is reached, the side pressing sliding block extrudes the metal sheet, and the upsetting cutter upsets the metal sheet until the required size specification is reached; and switching the medium entering the pipeline in the mold, cooling the mold, and opening the mold to take out a finished product. According to the invention, the temperature of the upsetting die can be quickly adjusted, so that the metal sheet is upset at a proper temperature, the heating effect of the die is uniform, and the upsetting effect and the production efficiency of the metal sheet are improved.

Description

[Technical field]

[0001] The invention relates to the technical field of metal upsetting and forming, in particular to a method for upsetting a metal thin plate based on a multi-medium rapid heating and cooling system. [Background technology]

[0002] Magnesium aluminum alloy and other metal sheets are widely used in notebook computers and automobile parts. Before being applied to products, magnesium aluminum alloy and other metal sheets usually need to be CNC milled to enhance their precision and appearance. However, CNC milling requires that the plate must have sufficient excess material to ensure processing accuracy. However, in this way, too much waste is generated after milling, resulting in increased production costs. At the same time, the treatment of a large amount of metal waste and sewage also consumes a lot of manpower and material resources, which is not conducive to environmental protection.

[0003] Upsetting, also known as roughing, is a forging process that reduces the height of the billet and increases the cross-section. It can improve the shape of each organization in the alloy forging and make it evenly distributed, improve the mechanical properties of the forging, and reduce the anisotropy of the mechanical properties of the billet. By upsetting the magnesium-aluminum alloy sheet, sufficient excess material can be provided for CNC milling, reducing CNC processing time and material loss, while generating less metal waste and sewage. Traditional upsetting dies for plasticizing metal billets generally thin thick plates, but it is difficult to upset the billet from thin to thick. At the same time, since the heating device of the existing upsetting dies generally adopts the furnace heating method of coal-fired reverberatory furnaces, heavy oil furnaces, etc., the billet temperature is difficult to control, the heating is uneven, the heating time is long, and it is easy to cause overburning and oxidation decarbonization, resulting in unsatisfactory upsetting effect, and it takes a long time to work, reducing production efficiency.

[0004] In view of this, the present invention provides a method for upsetting a metal sheet based on a multi-media rapid heating and cooling system to solve the above problems. [Summary of the invention]

[0005] In order to solve the problems that the existing method of heating the furnace of the upsetting die using coal-fired reverberatory furnace, heavy oil furnace, etc., the temperature of the blank is difficult to control, the heating is uneven, the heating time is long, it is easy to cause overburning, oxidation and decarbonization, resulting in unsatisfactory upsetting effect, and it takes a long time to work, reducing production efficiency. The present invention provides a method for upsetting metal thin plates based on a multi-media rapid heating and cooling system to solve the above problems.

[0006] A method for upsetting a metal sheet based on a multi-medium rapid heating and cooling system, wherein the multi-medium rapid heating and cooling system can realize rapid temperature rise and fall of the mold by controlling the medium entering the pipeline in the upsetting mold, wherein the upsetting mold comprises a male mold, a female mold, a side pressure slider and a upsetting cutter, wherein the male mold and the female mold are respectively provided with a male mold core and a female mold core, wherein the side pressure slider is arranged on the female mold, and the upsetting cutter is arranged on the male mold, wherein the pipeline in the mold is arranged in the male mold core, the female mold core, the side pressure slider and the upsetting cutter, and is respectively connected to the mold inlet pipeline and the mold outlet pipeline, wherein the pipeline in the mold is used to accommodate different media to pass through so as to adjust the mold temperature, and wherein the method comprises the following steps:

[0007] S1: Placing a metal sheet: placing the metal sheet to be upset in the female mold core of the upset mold, and placing the metal sheet between the side pressure sliders, and closing the mold;

[0008] S2: Preheating the mold: According to the material of the thick metal sheet to be upset, the corresponding medium is selected through the multi-medium rapid heating and cooling system to pass through the pipeline inside the mold, so that the mold is preheated to the operating temperature;

[0009] S3: Upsetting forming: when the mold reaches the operating temperature, the side pressure slider extrude the metal sheet, and the upsetting cutter upsets the metal sheet until the metal sheet reaches the required size specification;

[0010] S4: taking out the finished product: switching the medium entering the pipeline in the mold to cool the mold to the mold opening temperature, the mold is opened, and the finished product is taken out.

[0011] Preferably, in S2, the operating temperature is set according to the specific material of the metal sheet, and the operating temperature does not exceed 280 degrees Celsius.

[0012] Preferably, a temperature monitoring device is also provided in the mold for monitoring the temperature of the mold in real time.

[0013] Preferably, the temperature monitoring device may be a thermocouple.

[0014] Preferably, the multi-media rapid heating and cooling system comprises a medium supply module, a temperature regulating pipeline, and a medium separation and recovery module, wherein:

[0015] The medium supply module comprises a first medium supply module, a second medium supply module and a third medium supply module, and the medium supply module is used to supply different mediums to the pipeline in the mold to quickly heat or cool the mold;

[0016] The temperature regulating pipeline includes a first temperature regulating pipeline and a second temperature regulating pipeline:

[0017] One end of the first temperature adjustment pipeline is connected to the first medium supply module, the second medium supply module, and the third medium supply module through the first valve, the second valve, and the third valve, respectively, and the other end is connected to the mold inlet pipeline through the fourth valve;

[0018] One end of the second temperature adjustment pipeline is connected to the mold outlet pipeline through the fifth valve, and the other end is connected to the medium recovery and separation module;

[0019] The medium recovery and separation module is used to separate and recover the medium passing through the pipeline in the mold for recycling.

[0020] Preferably, the first medium supply module, the second medium supply module and the third medium supply module can be a cooling water supply module, a hot oil supply module and a steam supply module respectively, and the medium passing through the pipeline in the mold is controlled by a valve.

[0021] The beneficial effect of the present invention is that by arranging mold pipelines in the male mold core, female mold core, side pressure slider and upsetting cutter of the upsetting mold, and adjusting and switching the medium entering the mold pipeline by using a multi-medium rapid heating and cooling system as needed, the temperature of the mold can be quickly adjusted, the metal sheet can be upset at an appropriate temperature, the mold heating effect is uniform, the upsetting effect and production efficiency of the metal sheet are improved, sufficient margin is provided for subsequent CNC milling of the metal sheet, and production costs are saved.

Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the male mold of the upsetting die of the present invention.

[0023] Figure 2 It is a schematic diagram of the upsetting die master mold of the present invention.

[0024] Figure 3 The present invention is a flow chart of a method for upsetting a metal sheet based on a multi-medium rapid heating and cooling system.

[0025] Figure 4 It is a structural diagram of a multi-media rapid heating and cooling system. [Specific implementation method]

[0026] To further illustrate the technical means and effects adopted by the present invention, the following is a detailed description in conjunction with the embodiments of the present invention and the accompanying drawings.

[0027] The present invention provides a method for upsetting a metal sheet based on a multi-medium rapid heating and cooling system. The multi-medium rapid heating and cooling system can realize rapid temperature rise and fall of the mold 1 by controlling the medium entering the pipeline 10 in the upsetting mold, and the temperature adjustment effect is uniform, thereby improving the upsetting quality and production efficiency of the metal sheet. The upsetting mold 1 includes a male mold 13, a female mold 14, a side pressure slider 15 and an upsetting cutter (not shown in the figure). The male mold 13 and the female mold 14 are respectively provided with a male mold core 130 and a female mold core 140. The side pressure slider 15 is arranged on the female mold 14, and the upsetting cutter is arranged on the male mold 13. The pipeline 10 in the mold is arranged in the male mold core 130, the female mold core 140, the side pressure slider 15 and the upsetting cutter, and is respectively connected to the mold inlet pipeline 11 and the mold outlet pipeline 12. The pipeline 10 in the mold is used to accommodate different media to pass through so as to adjust the temperature of the mold 1. The method includes the following steps:

[0028] S1: Placing a metal sheet: placing the metal sheet to be upset in the female mold core 140 of the upset mold 1, and placing the metal sheet between the side pressure sliders 15, and closing the mold 1;

[0029] S2.: Preheating the mold 1: According to the material of the metal sheet to be upset, a corresponding medium is selected through the multi-medium rapid heating and cooling system to pass through the pipeline 10 in the mold, so that the mold 1 is preheated to the operating temperature;

[0030] S3: Upsetting: When the mold 1 reaches the operating temperature, the side pressure slider 15 extrude the metal sheet, and the upsetting cutter upsets the metal sheet until the metal sheet reaches the required size specification;

[0031] S4: taking out the finished product: switching the medium entering the pipeline 10 in the mold to cool the mold 1 to the mold opening temperature, the mold 1 is opened, and the finished product is taken out.

[0032] Among them, in S2, the operating temperature is set according to the specific material of the metal sheet. The principle of setting the operating temperature is that the strength of the metal sheet decreases and the ductility increases at this temperature, so that it is easy to be upset and formed. The selected medium can be hot oil to quickly heat the mold 1 to an operating temperature not exceeding 280 degrees Celsius.

[0033] The medium in S4 may be cooling water entering the pipeline 10 inside the upsetting die, so that the upsetting die 1 is quickly cooled to the die opening temperature.

[0034] Among them, the mold 1 is also provided with a temperature monitoring device for real-time monitoring of the temperature of the mold. According to the real-time temperature data of the temperature monitoring device, the medium entering the pipeline 10 in the mold is adjusted and switched through a multi-medium rapid heating and cooling system, and the temperature of the mold 1 is adjusted in time to prevent the upsetting effect from being affected by temperature fluctuations.

[0035] Wherein, the temperature monitoring device may be a thermocouple.

[0036] In a preferred embodiment, the multi-media rapid heating and cooling system includes a medium supply module 20, a temperature control pipeline, and a medium separation and recovery module 28, wherein:

[0037] The medium supply module 20 includes a first medium supply module 200, a second medium supply module 201, and a third medium supply module 202. The medium supply module 20 is used to supply different mediums to the pipeline 10 in the mold to quickly heat or cool the mold 1.

[0038] The temperature regulating pipeline includes a first temperature regulating pipeline 26 and a second temperature regulating pipeline 27:

[0039] One end of the first temperature control pipeline 26 is connected to the first medium supply module 200, the second medium supply module 201, and the third medium supply module 202 through the first valve 21, the second valve 22, and the third valve 23, respectively, and the other end is connected to the mold inlet pipeline 11 through the fourth valve 24;

[0040] One end of the second temperature adjustment pipeline 27 is connected to the mold outlet pipeline 12 through the fifth valve 25, and the other end is connected to the medium recovery and separation module 28;

[0041] The medium recovery and separation module 28 is used to separate and recover the medium passing through the pipeline 10 in the mold for recycling.

[0042] The first medium supply module 200 , the second medium supply module 201 , and the third medium supply module 202 can be cooling water supply module, hot oil supply module, and steam supply module, respectively, and the medium passing through the mold internal pipeline 10 is controlled by valves.

[0043] The beneficial effect of the present invention is that by setting an inner mold pipeline 10 in the male mold core 130, the female mold core 140, the side pressure slider 15 and the upsetting cutter of the upsetting mold, and adjusting and switching the medium entering the inner mold pipeline 10 by using a multi-medium rapid heating and cooling system as needed, the temperature of the mold 1 can be quickly adjusted, so that the metal sheet can be upset at an appropriate temperature, the heating effect of the mold 1 is uniform, the upsetting effect and production efficiency of the metal sheet are improved, sufficient margin is provided for subsequent CNC milling of the metal sheet, and production costs are saved.

[0044] It should be pointed out that the present invention is not limited to the above-mentioned implementation modes, and any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments by any technician familiar with the profession based on the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A method for upsetting a metal sheet based on a multi-medium rapid heating and cooling system, wherein the multi-medium rapid heating and cooling system can realize rapid temperature rise and fall of the mold by controlling the medium entering the pipeline in the upsetting mold, wherein the upsetting mold comprises a male mold, a female mold, a male mold core, a female mold core, a side pressure slider and an upsetting cutter, wherein the pipeline in the mold is arranged in the male mold core, the female mold core, the side pressure slider and the upsetting cutter, and is respectively connected to the mold inlet pipeline and the mold outlet pipeline, wherein the method comprises: The method comprises the following steps: S1: Placing a metal sheet: placing the metal sheet to be upset in the female mold core of the upset mold, and placing the metal sheet between the side pressure sliders, and closing the mold; S2: Preheating the mold: According to the material of the thick metal sheet to be upset, the corresponding medium is selected through the multi-medium rapid heating and cooling system to pass through the pipeline inside the mold, so that the mold is preheated to the operating temperature; S3: Upsetting forming: when the mold reaches the operating temperature, the side pressure slider extrude the metal sheet, and the upsetting cutter upsets the metal sheet until the metal sheet reaches the required size specification; S4: taking out the finished product: switching the medium entering the pipeline in the mold to cool the mold to the mold opening temperature, the mold is opened, and the finished product is taken out.

2. A method for upsetting a metal sheet based on a multi-media rapid heating and cooling system as claimed in claim 1, characterized in that: In S2, the operating temperature is set according to the specific material of the metal sheet.

3. The method for upsetting a metal sheet based on a multi-media rapid heating and cooling system as claimed in claim 1, characterized in that: The mold is also provided with a temperature monitoring device for real-time monitoring of the temperature of the mold.

4. A method for upsetting a metal sheet based on a multi-media rapid heating and cooling system as claimed in claim 3, characterized in that: The temperature monitoring device may be a thermocouple.

5. The method for upsetting a metal sheet based on a multi-media rapid heating and cooling system as claimed in claim 1, characterized in that: The multi-media rapid heating and cooling system includes a medium supply module, a temperature regulating pipeline, and a medium separation and recovery module, wherein: The medium supply module comprises a first medium supply module, a second medium supply module and a third medium supply module, and the medium supply module is used to supply different mediums to the pipeline in the mold to quickly heat or cool the mold; The temperature regulating pipeline includes a first temperature regulating pipeline and a second temperature regulating pipeline: One end of the first temperature adjustment pipeline is connected to the first medium supply module, the second medium supply module, and the third medium supply module through the first valve, the second valve, and the third valve, respectively, and the other end is connected to the mold inlet pipeline through the fourth valve; One end of the second temperature adjustment pipeline is connected to the mold outlet pipeline through the fifth valve, and the other end is connected to the medium recovery and separation module; The medium recovery and separation module is used to separate and recover the medium passing through the pipeline in the mold for recycling.

6. A method for upsetting a metal sheet based on a multi-media rapid heating and cooling system as claimed in claim 5, characterized in that: The first medium supply module, the second medium supply module, and the third medium supply module can be a cooling water supply module, a hot oil supply module, and a steam supply module, respectively, and the medium passing through the pipeline in the mold is controlled by a valve.

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