Machining method of forge piece

Abstract

The invention discloses a forging machining method. A blank heated to a second preset temperature is placed in a cavity of a fixed die; then a first driver is controlled to drive the movable mold to execute mold closing operation towards the fixed mold according to preset mold closing parameters; after the die assembly operation is completed, a second driver is controlled to drive a side pressing core of the die according to preset extrusion parameters to conduct extrusion forming on the blank till a forge piece product is formed; and controlling the first driver and the second driver to reset, and taking out the forge piece product to finish the forging process of the forge piece. And then the forging product is subjected to flash and burr removal operation and heat treatment. According to the machining method of the forge piece, the waste yield during forging forming can be reduced, and material and energy waste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of forging processing, and more specifically, to a processing method for forgings. Background Art

[0002] The material utilization rate of forgings is determined by many aspects such as product shape, process, equipment, etc. A high material utilization rate means less waste, which gives an advantage in terms of cost. In traditional forging methods, the working mode mostly uses the direct clamping of the moving die core and the fixed die core to form forgings. And to ensure the complete forming of the forgings, a certain clamping gap (also known as a waste slot) is reserved between the moving die core and the fixed die core. Therefore, a relatively large amount of waste (referred to as "flash" in the industry) is inevitably generated after forging, resulting in waste of raw materials, energy, etc.

[0003] In summary, how to solve the problem of a large amount of forging waste generated during the processing and forming of forgings has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a processing method for forgings to solve the problem of a large amount of forging waste generated during the processing and forming of forgings.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A processing method for forgings, the processing method comprising:

[0007] Placing a blank, placing the blank heated to a second preset temperature into the cavity of the fixed die of the mold;

[0008] Performing a clamping operation, controlling a first driver to drive the moving die of the mold towards the fixed die to perform a clamping operation with preset clamping parameters;

[0009] Extrusion forming, controlling a second driver to drive a side pressing core of the mold to extrude the blank until a forging product is formed with preset extrusion parameters;

[0010] Taking out the forging product, controlling the first driver and the second driver to reset, and taking out the forging product;

[0011] Waste cleaning, removing flash and burrs from the forging product;

[0012] Heat treatment, performing heat treatment on the forging product.

[0013] Optionally, in the step of preheating the mold, at least one of the first preheating method, the second preheating method, and the third preheating method is used to heat the fixed die and the moving die.

[0014] Optionally, before the step of placing the blank, the processing method further includes:

[0015] Preheating the mold, heating the stationary mold and the moving mold to a first preset temperature.

[0016] Optionally, the operating steps of the first preheating method include:

[0017] Step S11: Heating the heat carrier to a third preset temperature, where the third preset temperature is not lower than the first preset temperature;

[0018] Step S12: Placing the heat carrier on the stationary mold and driving the moving mold downward to contact the heat carrier, so that the heat carrier heats the moving mold and the stationary mold in a heat exchange manner;

[0019] Step S13: Monitoring the temperatures of the moving mold and the stationary mold, and after the temperatures of the moving mold and the stationary mold reach the first preset temperature, driving the moving mold upward and removing the heat carrier.

[0020] Optionally, the second preheating method is configured to directly heat the stationary mold and the moving mold by using a flame.

[0021] Optionally, the third preheating method is configured to directly heat the stationary mold and the moving mold by using an electric heating device.

[0022] Optionally, the value range of the first preset temperature is 100°C - 300°C.

[0023] Optionally, before performing the step of placing the blank, the method further includes the steps of:

[0024] Heating the blank, putting the blank into a heating furnace and heating for a preset duration until the blank reaches the second preset temperature;

[0025] Wherein, the preset duration is configured to be 40 minutes - 60 minutes, and the second preset temperature is 450°C ± 10°C.

[0026] Optionally, the preset mold closing parameters include the mold closing speed. The mold closing stroke of the moving mold moving towards the stationary mold includes a first stroke and a second stroke. The mold closing speed is configured such that the speed of the moving mold moving closer to the stationary mold in the first stroke is 300 mm / s ± 10 mm / s, and the speed of the moving mold moving closer to the stationary mold in the second stroke is 10 mm / min ± 1 mm / min.

[0027] Optionally, the preset mold clamping parameters further include a mold clamping pressure and / or a first pressure holding duration. Wherein, the mold clamping pressure is the pressure applied when the first driver drives the moving mold to clamp towards the fixed mold, and the mold clamping pressure is configured to be 2900 kN - 3000 kN; the first pressure holding duration is configured to be 0.5 seconds - 1.5 seconds.

[0028] Optionally, the preset extrusion parameters include an extrusion speed, which is the moving speed of the side pressing core towards the blank driven by the second driver, and the extrusion speed is configured to be 10 mm / min ± 1 mm / min.

[0029] Optionally, the preset extrusion parameters further include an extrusion pressure and / or a second pressure holding duration. Wherein, the extrusion pressure is the extrusion force applied by the second driver to the side pressing core towards the blank, and the extrusion pressure is configured to be 750 kN - 800 kN; the second pressure holding duration is configured to be 0.5 seconds - 1.5 seconds.

[0030] Optionally, between the step of preheating the mold and the step of placing the blank, there is also a step:

[0031] Making a lubricating layer in the cavity of the fixed mold and the cavity of the moving mold.

[0032] Optionally, in the step of taking out the forging product, the first driver and the second driver are controlled to perform a reset operation according to the following steps:

[0033] Controlling the first driver to reset to the initial position at a speed of 300 mm / s ± 10 mm / s;

[0034] Controlling the second driver to reset to the initial position at a speed of 160 mm / s ± 10 mm / s.

[0035] Optionally, in the processing method, the step of waste cleaning is performed after the step of heat treatment; or, the step of waste cleaning is performed before the step of heat treatment.

[0036] Optionally, after completing the steps of waste cleaning and heat treatment, there is also:

[0037] Surface treatment, performing shot peening on the forging product.

[0038] Optionally, after completing the step of surface treatment, there is also:

[0039] Product inspection, detecting the external dimensions of the forging product through a detection device to determine whether the forging product is qualified.

[0040] Optionally, the processing method further includes making a blank, where making the blank includes the steps of:

[0041] Cutting the raw material into a preliminary blank with a preset specification size;

[0042] Performing shot peening on the surface of the preliminary blank to obtain the blank.

[0043] In the processing method of this forging, during actual application, by placing the blank into the cavity of the fixed mold, and then controlling the first driver to drive the moving mold towards the fixed mold to perform a mold closing operation with preset mold closing parameters. When the mold closing operation is completed, the cavity of the fixed mold and the cavity of the moving mold enclose to form a combined mold cavity. Additionally, since the side pressing core extends from the extrusion channel into the combined mold cavity and forms a forming cavity with the combined mold cavity, by controlling the second driver to drive the side pressing core to move along the extrusion channel with preset extrusion parameters, the blank in the forming cavity can be extruded and formed. Since during the extrusion forging process, the blank is extruded and formed in a relatively closed forming cavity, that is, after the moving mold and the fixed mold are closed, there is no designed mold closing gap between them. Therefore, almost no flash waste is generated after extrusion. Subsequently, by adopting the forging processing method provided by the present invention, the waste output during forging can be reduced, and material and energy waste are reduced. Description of the Drawings

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0045] Figure 1 It is a flowchart of the processing method of the forging provided by the embodiment of the present invention;

[0046] Figure 2 It is a flowchart of the operation steps of the first preheating method provided by the embodiment of the present invention;

[0047] Figure 3 It is a schematic structural diagram of the fixed mold, the moving mold, and the side pressing core extruding the blank provided by the embodiment of the present invention;

[0048] Figure 4 It is a schematic structural diagram of the mold provided by the embodiment of the present invention;

[0049] Figure 5 It is a schematic structural diagram of the mold provided by the embodiment of the present invention without showing the moving mold.

[0050] Among them, Figures 3 - 5 In:

[0051] Fixed mold 1;

[0052] Moving mold 2;

[0053] Blank 3;

[0054] Side pressing core 4;

[0055] Side support mechanism 5. Specific implementation mode

[0056] The core of the present invention lies in providing a processing method for forgings to solve the problem of generating more forging waste during the processing and forming of forgings.

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0058] Refer to Figure 1 Combine Figures 3 - 5 As shown, the present invention specifically provides a processing method for forgings, and the processing method includes:

[0059] Step S1: Preheat the mold, and heat the fixed mold 1 and the moving mold 2 of the mold to the first preset temperature;

[0060] Step S2: Place the blank 3, and place the blank 3 heated to the second preset temperature into the cavity of the fixed mold 1;

[0061] Step S3: Perform the mold closing operation, and control the main cylinder of the first drive multi-way hydraulic press to drive the moving mold 2 to perform the mold closing operation on the fixed mold 1 with preset mold closing parameters;

[0062] Step S4: Extrusion molding, control the second drive to drive the side pressing core 4 of the mold to extrude and form the blank 3 until a forging product is formed;

[0063] Step S5: Take out the forging product, control the first drive and the second drive to reset, and take out the forging product. The taking out method can be manually taken out with tools such as pliers and placed in a designated position, or taken out by a manipulator and placed in a designated position;

[0064] Step S6: Scrap cleaning. Remove the flash and burrs from the forging product. Since flash and burrs are generated during the extrusion process (due to the imperfect fit between the fixed die 1 and the moving die 2 in practice, but theoretically there are none), it is necessary to clean the peripheral flash and burrs. Fix the die to a trimming device (such as a 125T press), place the forging product into the die cavity, and step on the switch to cut off the flash.

[0065] Step S7: Heat treatment. Perform heat treatment on the forging product. Specifically, when the forging product is an aluminum alloy forging, the heat treatment method preferably adopts T6 heat treatment. T6 heat treatment needs to be carried out in accordance with the heat treatment specification requirements corresponding to the material of the forging product. For example, if the material of the forging product is 6061 aluminum alloy, neatly place the forging product into the furnace, set important parameters such as temperature and time, and quickly immerse it in an aqueous solution at a certain temperature for quenching treatment after heating; place the quenched forging product (such as an aluminum part) into a low-temperature furnace for artificial aging treatment within the specified time.

[0066] Among them, the first driver and the second driver constitute a driving assembly. The driving assembly is preferably a multi-way hydraulic cylinder. Specifically, the first driver is configured as the main cylinder of the multi-way hydraulic cylinder, and the second driver is configured as the side cylinder of the multi-way hydraulic cylinder. Through the drive of the multi-way hydraulic cylinder, the drive is more stable and reliable. Of course, it can be understood that the above-mentioned multi-way hydraulic cylinder as the driving assembly is only an example of the embodiment of the present invention. In the actual application process, it can also be designed into the structural form of other driving mechanisms, and no more specific limitations are made here.

[0067] It should be noted that in the processing method, the scrap cleaning step S6 can be selected to be executed after the heat treatment step S7; or the scrap cleaning step S6 can be executed before the heat treatment step S7.

[0068] In the processing method of this forging, during actual application, the blank is placed into the cavity of the fixed die 1, and then the moving die 2 is driven by controlling the first driver (such as the main cylinder of a multi-directional hydraulic cylinder) to perform a die closing operation on the fixed die with preset die closing parameters. When the die closing operation is completed, the cavity of the fixed die and the cavity of the moving die enclose to form a die closing cavity. Additionally, since the side pressing core extends into the die closing cavity from the extrusion channel and forms a forming cavity with the die closing cavity, by controlling the second driver (such as the side cylinder of a multi-directional hydraulic cylinder) to drive the side pressing core to move along the extrusion channel with preset extrusion parameters, the blank 3 in the forming cavity can be extruded and formed. During the extrusion forging and forming process, the blank 3 is extruded and formed in a relatively closed forming cavity, that is, after the moving die and the fixed die are closed, there is no designed die closing gap between them. Therefore, almost no flash waste is generated after extrusion. Even if a very small amount of flash waste may be generated due to the machining accuracy of the die closing surface between the fixed die 1 and the moving die 2, the amount of flash waste generated for this reason can be almost negligible. Compared with the traditional forging processing method, using the forging processing method provided by the present invention can reduce the waste output during forging and forming, and reduce material and energy waste.

[0069] In addition, it is a more preferred solution to perform step S1 before performing step S2 in the above-mentioned forging processing method. Since both the fixed die 1 and the moving die 2 of the mold are preheated to the first preset temperature in advance, when the heated blank 3 is placed into the cavity of the fixed die 1 and the moving die 2 is controlled to close the die with respect to the fixed die 1, it is beneficial to reduce the temperature difference between the start of operation and after a period of operation of the mold equipment. Because at the beginning of operation, the mold equipment is almost at room temperature, and as the equipment continues to run, the mold will heat up. After the working state reaches a stable state, the corresponding temperature will also stabilize within a certain range. Therefore, by preheating the mold, the influence of the temperature difference at different time periods during the working process of the mold equipment on the blank 3 can be reduced, which in turn helps to improve the dimensional consistency of the corresponding extruded and formed forging products; at the same time, it helps to reduce the temperature difference change during the working process of the mold, thereby reducing the risk of mold cracking and helping to improve the service life of the mold; in addition, through waste cleaning and heat treatment, the forging products can better meet the required mechanical properties and service life.

[0070] It should be noted that those skilled in the art should be able to understand the basic structure and principle of the multi-directional hydraulic press forging process: The basic structure of the forging die generally includes a fixed die 1, a moving die 2, a side pressing core 4, and a side support mechanism 5. Refer to Figures 3 - 5 , among which, the fixed die 1 is generally arranged below the moving die 2, and the moving direction of the moving die 2 relative to the fixed die 1 refers to Figure 3In the direction A, after the moving die 2 moves downward to the state of being clamped with the fixed die 1, an initial cavity for forging can be formed. The side pressing core 4 extends into the initial cavity after the moving die 2 and the fixed die 1 are clamped from the side. The movement direction of the side pressing core 4 can refer to the direction B in 3. By pressing the blank 3 in the initial cavity with the side pressing core 4, the forging operation can be performed. The side supporting mechanism 5 is arranged opposite to the side pressing core 4 and is mainly used for laterally limiting the fixed die 1 and the moving die 2 when the side pressing core 4 applies pressure. When the side pressing core 4 is pressed to the preset position, the blank 3 is forged and formed. Since this forging method has no flash and no waste, it is more material-saving and cost-effective.

[0071] In addition, it should be noted that the above processing method can be applied to the forging of aluminum forgings, and can also be applied to the forging of other materials, such as ferrous metals, or other non-ferrous metals, etc., and no more specific limitations are made here.

[0072] In addition, it should be noted that the blank 3 used in the above processing method can be obtained by direct outsourcing or self-production. When the blank 3 is obtained by self-production, the processing method may further include:

[0073] Step a: Making the blank, which can specifically include:

[0074] Step a1: Cutting the raw material into a preliminary blank with a preset specification size. For example, manually put 2 aluminum bars with a length of 6 meters and a diameter of φ38 and a material of 6061 into an automatic sawing machine, set the corresponding parameters for automatic cutting, the blank specification is φ38*92 (weight 287.2±1g), stack them neatly as required, and put them into a designated container;

[0075] Step a2: Shot peening the surface of the preliminary blank to obtain the blank 3. In order to remove the foreign matters on the surface of the preliminary blank, the burrs generated during end face sawing need to be shot peened on the preliminary blank. According to the loading capacity of the shot peening machine, pour a reasonable amount into the equipment for surface cleaning for a set time (such as 30 minutes). Among them, the diameter of the pellets loaded in the shot peening machine can be configured according to actual needs. For example, the pellet diameter can be φ1mm.

[0076] In some specific implementation schemes, in the above step of preheating the mold, the way of heating the fixed die 1 and the moving die 2 can specifically adopt at least one of the three preheating methods: the first preheating method, the second preheating method, and the third preheating method.

[0077] Among them, referring to Figure 2 As shown, the operation steps of the above first preheating method can specifically include:

[0078] Step S11: Heating the heat carrier (such as an iron block) to a third preset temperature, and the third preset temperature is not lower than the first preset temperature;

[0079] Step S12: Place the heat carrier on the fixed mold 1, and drive the movable mold 2 to move downward by the first driver (such as the main cylinder of a multi-directional hydraulic cylinder) until it contacts the heat carrier, so that the heat carrier heats the movable mold 2 and the fixed mold 1 in a heat exchange manner;

[0080] Step S13: Monitor the temperatures of the movable mold 2 and the fixed mold 1. After the temperatures of the movable mold 2 and the fixed mold 1 reach the first preset temperature, drive the movable mold 2 to move upward and remove the heat carrier.

[0081] The main advantages of this first preheating method are that it is simple to operate and easy to implement, and the cost is relatively low.

[0082] In addition, the above-mentioned second preheating method can be specifically configured to directly heat the fixed mold 1 and the movable mold 2 with a flame, such as directly heating the mold with a flame gun (flamethrower). The third preheating method can be specifically configured to directly heat the fixed mold 1 and the movable mold 2 with an electric heating device. For example, corresponding electric heating devices are provided in the fixed mold 1 and the movable mold 2, and the fixed mold 1 and the movable mold 2 can be heated through the electric heating devices.

[0083] In the actual application process, the first preheating method can be selected to preheat the mold, or the second preheating method can be selected to preheat the mold, or the third preheating method can be selected to preheat the mold; it can also be a combination of at least two of the first preheating method, the second preheating method, and the third preheating method to preheat the mold, which can be selected and configured according to the actual situation and specific requirements, and no more specific limitations are made here.

[0084] It should be noted that the value range of the above-mentioned first preset temperature can be 100°C - 300°C. When the blank is an aluminum blank, the first preset temperature is preferably 150°C. Of course, it can be understood that the above value range is only an example of the first preset temperature in the embodiments of the present invention. In the actual application process, other temperature value ranges can also be selected according to the material of the mold itself and the material of the forging.

[0085] In some more specific implementation schemes, in the above processing method, before the step of placing the blank 3, the following steps should also be included:

[0086] Heat the blank 3, place the blank 3 in a heating furnace (such as a box-type heating furnace or a mesh belt continuous heating furnace) and heat it for a preset duration until the blank 3 reaches the second preset temperature;

[0087] Among them, the preset duration is configured to be 40 minutes - 60 minutes, such as 50 minutes can be selected, and the second preset temperature is 450°C ± 10°C.

[0088] By heating the blank 3 in the above heating furnace for a preset duration, the temperature distribution of the blank 3 after heating becomes more uniform, avoiding the situation where a large temperature difference between the inside and outside of the blank 3 affects the forging quality. Of course, it can be understood that the above method of heating the blank 3 in the heating furnace is merely an example of the embodiments of the present invention. In actual application, other heating methods can also be used to heat the blank 3, and no more specific limitations are made here.

[0089] It should be noted that in the above processing method, the preset mold closing parameters may specifically include the mold closing speed. The mold closing stroke of the moving mold moving towards the fixed mold includes a first stroke and a second stroke. The mold closing can specifically adopt a mold closing method of first fast and then slow. The mold closing speed can be specifically configured such that the speed of the moving mold 2 moving closer to the fixed mold 1 in the first stroke is 300 mm / s ± 10 mm / s, and the speed of the moving mold 2 moving closer to the fixed mold 1 in the second stroke is 10 mm / min ± 1 mm / min. By designing such a mold closing speed, the mold closing efficiency can be improved, and at the same time, the stability of mold closing can be ensured.

[0090] In a further implementation, the above preset mold closing parameters may further include the mold closing pressure and / or the first pressure holding duration. Among them, the mold closing pressure is the pressure applied when the main cylinder drives the moving mold 2 to close the mold towards the fixed mold 1. The mold closing pressure is configured to be 2900 kN - 3000 kN, preferably configured to be 2940 kN. Corresponding to the first driver (i.e., the main cylinder of the multi-directional hydraulic cylinder), it is equivalent to bearing a weight of 300 tons. The first pressure holding duration is configured to be 0.5 seconds - 1.5 seconds. By designing this first pressure holding duration, the springback degree of the blank can be effectively reduced, which helps to ensure the dimensional consistency of the forging product. If the first pressure holding duration is zero (i.e., no pressure holding), the dimensional deviation of the final forging product will be relatively large, but if the first pressure holding duration is too long, it will affect the processing efficiency. After continuous exploration and experimental verification by the applicant, it is found that setting the first pressure holding duration to 1 second is a relatively preferred solution.

[0091] In addition, it should be noted that in the above processing method, the preset extrusion parameters may specifically include the extrusion speed. The extrusion speed is also the movement speed of the side pressing core 4 driven by the second driver towards the blank 3. The applicant surprisingly finds that the extrusion speed is preferably configured to be 10 mm / min ± 1 mm / min, which can better ensure the quality of the forging product after extrusion.

[0092] In a further embodiment, in the above processing method, the preset extrusion parameters may further include extrusion pressure and / or the second pressure holding duration. Among them, the extrusion pressure is configured such that the extrusion force applied by the second driver to drive the side pressing core 4 against the blank 3 is 750 kN - 800 kN, preferably configured as 784 kN. The second driver (i.e., the side cylinder of the multi-directional hydraulic cylinder) is equivalent to bearing a weight of 80 tons; the second pressure holding duration is configured as 0.5 seconds - 1.5 seconds. By designing this second pressure holding duration, the springback degree of the blank can be effectively reduced, which helps to ensure the dimensional consistency of the forging product. If the second pressure holding duration is zero (i.e., no pressure holding), the dimensional deviation of the final forging product will be relatively large, but if the second pressure holding duration is too long, it will affect the processing efficiency. The applicant surprisingly found that setting the second pressure holding duration to 1 second is a relatively preferred solution.

[0093] In some other specific embodiments, in the above processing method, between the step of preheating the mold and the step of placing the blank 3, the following steps may further be included:

[0094] A lubricating layer is made in the cavity of the fixed mold 1 and the cavity of the movable mold 2. The specific manufacturing method of this lubricating layer can be to spray a lubricant in the cavity of the fixed mold 1 and the cavity of the movable mold 2 to form a film layer, or it can also be to directly brush the lubricant. In the actual application process, it can be selected according to the convenience of manufacturing. By designing this lubricating layer, on the one hand, the temperature difference between the blank and the mold can be alleviated, and on the other hand, the friction force and extrusion force between the blank 3 and the cavities of the fixed mold 1 and the movable mold 2 during the forming process can be reduced, which helps to improve the service life of the mold.

[0095] It should be noted that in the step of taking out the forging product, the first driver and the second driver can be specifically controlled to perform the reset operation according to the following steps:

[0096] Control the first driver to reset to the initial position at 300 mm / s ± 10 mm / s;

[0097] Control the second driver to reset to the initial position at 160 mm / s ± 10 mm / s.

[0098] By designing the above reset operation mode, the first driver and the second driver can quickly reset and retract after completing the forming operation, which is convenient for connecting with the subsequent operation process. For example, the forging can be taken away by manual or manipulator and placed in the designated position, reducing the connection gap time between processes and not affecting the working rhythm and efficiency.

[0099] In some specific embodiments, after the above processing method completes the waste cleaning and heat treatment steps, it further includes:

[0100] Step S8: Surface treatment, shot peening the forging product, specifically, the forging product can be placed in a shot peening machine for shot peening for a certain period of time (such as 30 minutes).

[0101] In a further embodiment, after the step S8 of surface treatment in the above processing method, it further includes:

[0102] Step S9: Product inspection, detecting the external dimensions of the forging product through inspection equipment to determine whether the forging product is qualified. Specifically, the product can be subjected to full - dimension inspection through relevant inspection equipment such as a coordinate measuring machine, a profiler, and a caliper, and an inspection report is issued.

[0103] In an even further embodiment, after the step S9 of product inspection in the above processing method, it further includes:

[0104] Step S10: Product packaging, packaging according to the set packaging method to ensure that it is not damaged during transportation and handling.

[0105] In addition, it should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0106] As shown in this application and the claims, unless the context clearly indicates an exceptional situation, words such as "a", "one", "a kind of" and / or "the" are not specifically singular, but may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. Elements defined by the statement "including one..." do not exclude the existence of other identical elements in the process, method, commodity or device including the element.

[0107] Among them, in the description of the embodiments of this application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; "and / or" herein is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "a plurality of" means two or more than two.

[0108] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0109] In this article, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for helping to understand the core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A processing method for forgings, characterized in that, the processing method includes: Placing the blank (3), placing the blank (3) heated to the second preset temperature into the cavity of the fixed mold (1) of the mold; Performing a mold closing operation, controlling the first driver to drive the moving mold (2) of the mold to perform a mold closing operation towards the fixed mold (1) with preset mold closing parameters; Extrusion molding, controlling the second driver to drive the side pressing core (4) of the mold to extrude the blank (3) until a forging product is formed; Taking out the forging product, controlling the first driver and the second driver to reset, and taking out the forging product; Scrap cleaning, removing flash and burrs from the forging product; Heat treatment, performing heat treatment on the forging product.

2. The processing method for forgings according to claim 1, characterized in that, before the step of placing the blank, the processing method further includes: Preheating the mold, heating the fixed mold (1) and the moving mold (2) to the first preset temperature.

3. The processing method for forgings according to claim 2, characterized in that, in the step of preheating the mold, at least one of the three preheating methods, namely the first preheating method, the second preheating method, and the third preheating method, is used to heat the fixed mold (1) and the moving mold (2).

4. The processing method for forgings according to claim 3, characterized in that, the operating steps of the first preheating method include: Step S11: Heating the heat carrier to the third preset temperature, and the third preset temperature is not lower than the first preset temperature; Step S12: Placing the heat carrier on the fixed mold (1), and driving the moving mold (2) to move down until it contacts the heat carrier, so that the heat carrier heats the moving mold (2) and the fixed mold (1) in a heat exchange manner; Step S13: Monitoring the temperatures of the moving mold (2) and the fixed mold (1) until the temperatures of the moving mold (2) and the fixed mold (1) reach the first preset temperature, then driving the moving mold (2) to move up, and taking away the heat carrier.

5. The processing method for forgings according to claim 3, characterized in that, the second preheating method is configured to directly heat the fixed mold (1) and the moving mold (2) by using a flame.

6. The processing method for forgings according to claim 3, characterized in that, the third preheating method is configured to directly heat the fixed mold (1) and the moving mold (2) by using an electric heating device.

7. The processing method for forgings according to claim 2, characterized in that, the value range of the first preset temperature is 100°C - 300°C.

8. The processing method for forgings according to claim 1, characterized in that, before the step of performing the placement of the blank (3), there is also a step: Heating the blank (3), putting the blank (3) into a heating furnace and heating for a preset duration until the blank (3) reaches the second preset temperature; wherein, the preset duration is configured to be 40 minutes - 60 minutes, and the second preset temperature is 450°C ± 10°C.

9. The processing method for forgings according to claim 1, characterized in that, The preset mold closing parameters include the mold closing speed. The mold closing stroke of the moving mold moving towards the fixed mold includes a first stroke and a second stroke. The mold closing speed is configured such that the speed of the moving mold (2) moving closer to the fixed mold (1) in the first stroke is 300 mm / s ± 10 mm / s, and the speed of the moving mold (2) moving closer to the fixed mold (1) in the second stroke is 10 mm / min ± 1 mm / min.

10. The processing method of the forging as claimed in claim 9, characterized in that the preset mold closing parameters further include the mold closing pressure and / or the first pressure holding duration. Wherein, the mold closing pressure is the applied pressure when the first driver drives the moving mold (2) to close the mold towards the fixed mold (1), and the mold closing pressure is configured to be 2900 kN - 3000 kN; the first pressure holding duration is configured to be 0.5 seconds - 1.5 seconds.

11. The processing method of the forging as claimed in claim 1, characterized in that the preset extrusion parameters include the extrusion speed, and the extrusion speed is the movement speed of the second driver driving the side pressing core (4) towards the blank (3), and the extrusion speed is configured to be 10 mm / min ± 1 mm / min.

12. The processing method of the forging as claimed in claim 11, characterized in that the preset extrusion parameters further include the extrusion pressure and / or the second pressure holding duration. Wherein, the extrusion pressure is the extrusion force applied by the second driver driving the side pressing core (4) towards the blank (3), and the extrusion pressure is configured to be 750 kN - 800 kN; the second pressure holding duration is configured to be 0.5 seconds - 1.5 seconds.

13. The processing method of the forging as claimed in claim 2, characterized in that between the step of preheating the mold and the step of placing the blank (3), there is further a step: manufacturing a lubricating layer in the cavity of the fixed mold (1) and in the cavity of the moving mold (2).

14. The processing method of the forging as claimed in claim 1, characterized in that in the step of taking out the forging product, the first driver and the second driver are controlled to perform a reset operation according to the following steps: controlling the first driver to reset to the initial position at 300 mm / s ± 10 mm / s; controlling the second driver to reset to the initial position at 160 mm / s ± 10 mm / s.

15. The processing method of the forging as claimed in any one of claims 1 - 14, characterized in that in the processing method, the step of waste cleaning is performed after the step of heat treatment; or, the step of waste cleaning is performed before the step of heat treatment.

16. The processing method of the forging as claimed in any one of claims 1 - 14, characterized in that after completing the steps of waste cleaning and heat treatment, there is further included: surface treatment, performing shot peening treatment on the forging product.

17. The processing method of the forging as claimed in claim 16, characterized in that after completing the step of surface treatment, there is further included: Product inspection, using inspection equipment to inspect the external dimensions of the forging product to determine whether the forging product is qualified.

18. The processing method of the forging according to any one of claims 1-14, characterized in that the processing method further includes making a blank, and the making of the blank includes the steps of: cutting the raw material into a preliminary blank with a preset specification size; performing shot peening on the surface of the preliminary blank to obtain the blank (3).

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