Inner wall dephosphorization equipment suitable for forged workpiece with deep hole

Abstract

The utility model relates to the technical field of forging processing, in particular to an inner wall dephosphorization device suitable for a forging workpiece with a deep hole, which comprises a foundation, an inner wall dephosphorization machine and a robot, the inner wall dephosphorization machine is arranged in a pit part of the foundation, and the robot is positioned on a table top of the foundation and is higher than the inner wall dephosphorization machine. The inner wall dephosphorization machine comprises a water tank and a quick electromagnetic valve located on one side of the water tank. The inner wall dephosphorization equipment suitable for the forged workpiece with the deep hole is provided for meeting the dephosphorization requirement of the forged workpiece with the deep hole, the equipment combines the technological process of the forged workpiece with the deep hole and a forge piece transferring method, the forge piece is clamped by the mechanical arm and the clamping jaw to complete the dephosphorization operation of the deep hole, and the working efficiency is improved. The special nozzle sprays high-pressure water columns for dephosphorization operation, the speed is high, the dephosphorization effect is good, and equipment parameters can be conveniently and flexibly adjusted according to process requirements.

Description

Technical Field

[0001] This utility model relates to the field of forging technology, and in particular to an internal descaling device suitable for forging workpieces with deep holes. Background Technology

[0002] In the forging process of steel workpieces, the forgings need to be heated to a high temperature in a furnace. Upon contact with air, the surface of the forging reacts with oxygen in the air to generate oxides, forming an oxide scale with a network of cracks. This oxide scale can lead to various problems such as cracks and defects after the forging is formed, making it impossible to ensure the stability of product quality.

[0003] During the machining of forgings with deep holes, a die is used to extrude the deep holes into the forging. During this process, oxide scale forms on the sidewalls and bottom of the deep holes, with most of the scale concentrated at the bottom due to the extrusion action of the die. To ensure product quality, this oxide scale needs to be removed before the next process. Since the length-to-diameter ratio of the deep hole can sometimes be as high as 10 mm, appropriate methods must be used to remove the oxide scale from the inside of the deep hole, taking into account the process requirements and the characteristics of the forged workpiece.

[0004] Currently, the main method for removing oxide scale from forgings in the forging industry is through descaling equipment, including high-pressure water descaling equipment and mechanical descaling equipment.

[0005] High-pressure water descaling involves spraying high-pressure water generated by a high-pressure water pump through nozzles onto the surface of forgings on a conveyor line to remove oxide scale. Under the action of the nozzles, the high-pressure water forms a fan-shaped water jet with significant impact force, which is sprayed onto the forging surface. Under the action of this high-pressure fan-shaped water jet, the oxide scale is cut, rapidly cooled and contracted, peeling off from the base material and being washed away from the forging surface, thus completely removing the oxide scale. This method is fast, produces little pollution, and has a small temperature drop; however, it can only be used for descaling the outer surface of forgings, and the equipment requires a large footprint and consumes a lot of power, making it unsuitable for descaling deep holes.

[0006] Mechanical descaling involves using equipment such as steel brushes to contact the surface of the forging and then rotating or reciprocating to mechanically remove oxide scale. This method can be used for descaling inside deep holes; however, its effectiveness is limited by space constraints when the holes are long and small in diameter. Furthermore, it is slow and causes significant temperature drops, which can affect the temperature during subsequent forging processing and consequently impact product quality.

[0007] To address the aforementioned technical deficiencies, this utility model provides an internal descaling device suitable for forgings with deep holes, specifically addressing the descaling requirements of forgings with deep holes. This method combines the process flow and forging transfer method of forgings with deep holes. The forging is held by a robotic arm and grippers to complete the deep hole descaling operation, and a high-pressure water jet is sprayed from a specially designed nozzle for descaling. The process is fast, has a good descaling effect, and allows for flexible adjustment of equipment parameters according to process requirements. Summary of the Invention

[0008] An internal descaling device suitable for deep-hole forging workpieces includes a foundation, an internal descaling machine, and a robot. The internal descaling machine is installed in a pit section of the foundation, and the robot is located on a platform of the foundation and is higher than the internal descaling machine. The internal descaling machine includes a water tank and a fast solenoid valve located on one side of the water tank.

[0009] Furthermore, the rapid solenoid valve is connected to the water tank via a high-pressure water pipe; the nozzle of the high-pressure water pipe passes through the side plate of the water tank and is located above the opening of the water tank. A high-pressure water interface is also provided on the high-pressure water pipe, which is located on one side of the rapid solenoid valve.

[0010] Furthermore, an energy storage mechanism is provided on one side of the water tank, and the energy storage mechanism is connected to the water tank through a base plate. The energy storage mechanism includes an energy accumulator, a three-phase asynchronous motor connected to the energy accumulator, and the energy accumulator is connected to a high-pressure water interface through a power supply pipe.

[0011] Furthermore, a high-pressure crankshaft pump is installed between the three-phase asynchronous motor and the accumulator; the three-phase asynchronous motor is connected to and controls the high-pressure crankshaft pump through a power supply line.

[0012] Furthermore, a screen is provided below the nozzle, and a mesh partition is provided between the screen and the nozzle.

[0013] Furthermore, the water tank is internally provided with a tank body one and a tank body two, a screen filter plate is provided between the tank body one and the tank body two, and a filtered water pipe is provided between the tank body two and the accumulator.

[0014] Furthermore, the nozzle opening is vertically upward, and a deep-hole forging is provided above the opening. The deep-hole forging is fixed on the robot's gripper, and the gripper and the robot are connected by a degree-of-freedom swing arm. The deep hole of the deep-hole forging is aligned with the nozzle opening.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] This invention provides an internal descaling device suitable for deep-hole forging workpieces. Integrated with the workpiece handling process, it eliminates the need for conventional conveyor lines and other equipment on the descaling equipment, resulting in lower equipment costs, smaller footprint, faster descaling speed, and less workpiece cooling. The internal descaling machine can be installed underground, further reducing space requirements and minimizing impact on the overall production line layout. Depending on process requirements and the distribution of oxide scale within the workpiece's inner bore, it can utilize nozzles with different high-pressure water jet shapes (e.g., columnar, conical) and employ a robot to grip, rotate, and translate the workpiece, achieving better descaling results and greater process flexibility. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the internal wall descaling machine of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the internal wall phosphorus removal device in this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal dephosphorization machine in this utility model.

[0020] In the diagram: 1-Inner wall descaling machine; 2-Deep hole forging; 3-Gripper; 4-Robot; 5-Foundation; 6-Degree-of-freedom swing arm; 101-Water tank; 102-Fast solenoid valve; 103-Nozzle; 104-Three-phase asynchronous motor; 105-High pressure crankshaft pump; 106-Accumulator; 107-Grid plate; 108-Screen; 109-Screen filter plate; 110-Box 1; 111-Box 2; 112-Water pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1, please refer to the accompanying drawings in the instruction manual. Figures 1-3As shown, an internal descaling device suitable for deep-hole forging workpieces includes a foundation 5, an internal descaling machine 1, and a robot 4. The internal descaling machine 1 is installed in the pit portion of the foundation 5, and the robot 4 is located on the platform of the foundation 5 and is higher than the internal descaling machine 1. In this embodiment, during the processing of the deep-hole forging 2, after the deep-hole forming process is completed, the robot 4 and the gripper 3 installed on the robot 4 need to clamp the deep-hole forging 2 from the forging equipment of the previous process and transport it to the internal descaling device. During the handling of the deep hole forging 2, the robot 4 aligns the deep hole of the deep hole forging 2 downwards with the nozzle 103 of the inner wall descaling machine 1 installed in the pit of the foundation 5. In this embodiment, the inner wall descaling machine 1 includes a water tank 101 and a fast solenoid valve 102 located on one side of the water tank 101. The fast solenoid valve 102 is connected to the water tank 101 through a high-pressure water pipe. The nozzle 103 of the high-pressure water pipe passes through the side plate of the water tank 101 and is located above the opening of the water tank 101. A high-pressure water interface is also provided on the high-pressure water pipe, which is located on one side of the fast solenoid valve 102.

[0023] In Example 2, an energy storage mechanism is provided on one side of the water tank 101, and the energy storage mechanism is connected to the water tank 101 through a base plate. The energy storage mechanism includes an accumulator 106 and a three-phase asynchronous motor 104 connected to the accumulator 106. The accumulator 106 is connected to a high-pressure water interface through a power supply pipe. A high-pressure crankshaft pump 105 is provided between the three-phase asynchronous motor 104 and the accumulator 106. The three-phase asynchronous motor 104 is connected to and controls the high-pressure crankshaft pump 105 through a power supply line.

[0024] In Example 3, based on Example 1, a screen 108 is provided below the nozzle 103, and a mesh partition 107 is provided between the screen 108 and the nozzle 103. The water tank 101 contains a first tank 110 and a second tank 111. A screen filter plate 109 is provided between the first tank 110 and the second tank 111, and a water pipe 112 is provided between the second tank 111 and the accumulator 106. In this example, the opening of the nozzle 103 is vertically upward, and a deep-hole forging 2 is provided above the opening. The deep-hole forging 2 is fixed to the gripper 3 of the robot 4, and the gripper 3 is connected to the robot 4 via a degree-of-freedom swing arm 6. The deep hole of the deep-hole forging 2 is aligned with the opening of the nozzle 103. In this example, the degree-of-freedom swing arm 6 can rotate 360 ​​degrees in all directions, and the robot 4 has a built-in positioning function. This positioning function of the robot 4 is already very mature in existing technology and will not be described in detail here.

[0025] Example 4, a descaling method for any of the aforementioned descaling devices for the inner wall of forged workpieces with deep holes, comprising the following steps:

[0026] S1. Robot 4 carries deep-hole forging 2 to the inner wall descaling machine;

[0027] S2, the gripper 3 holds the deep hole of the deep hole forging 2 downward and moves it with the nozzle 103 to center or move it up, down, left, right and adjust the orientation of the deep hole, and wash the deep hole forging 2 with high pressure water sprayed from the nozzle 103 at multiple angles or multiple times.

[0028] S3. Open the rapid solenoid valve 102, and the high-pressure water in the accumulator 106 is sprayed into the deep hole through the nozzle 103 for descaling. The columnar high-pressure water jet from the nozzle 103 peels off the oxide scale inside the deep hole, especially at the bottom. After the descaling operation is completed, the rapid solenoid valve 102 closes, and the three-phase asynchronous motor 104 starts running, driving the high-pressure crankshaft pump 105 to fill the accumulator 106 with water. Once the pressure sensor in the circuit detects that the pressure has reached the predetermined value, the three-phase asynchronous motor 104 can stop running. At this time, the robot 4 can continue to transport the descaled deep hole forging 2 to the equipment for the next process. In this embodiment, the method has the following advantages:

[0029] When combined with the handling of deep-hole forgings 2, there is no need to install common conveyor lines or other equipment on the descaling equipment for handling deep-hole forgings 2. This not only results in lower equipment costs and a smaller footprint, but also eliminates the need for additional time, achieves faster descaling speed, and minimizes the temperature drop of the workpiece.

[0030] In this embodiment, the inner wall dephosphorizer 1 can be installed below ground, which occupies less space and has less impact on the overall layout of the production line.

[0031] S4. After phosphorus removal, the high-pressure wastewater is filtered by the grid plate 107 and the screen 108 and then enters the first tank 110 of the water tank (101). The high-pressure wastewater in the first tank 110 then enters the second tank 111 through the screen filter plate 109.

[0032] S5. The high-pressure wastewater in the second box 111 is filtered by the screen filter plate 109 and then enters the high-pressure crankshaft pump 105 through the filter water pipe 112. After the high-pressure crankshaft pump 105 provides water to the accumulator 106, it is pressurized into high-pressure water and recycled.

[0033] In this embodiment, the water sprayed from nozzle 103 flows downwards along with the oxide scale after the dephosphorization process is completed. After being filtered by the mesh plate 107 and the screen 108, it enters the first tank 110 and the second tank 111 of the water tank 101. In the first tank 110, it is further filtered by the screen filter plate 109, and then flows back to the high-pressure crankshaft pump 105 through the corresponding pipeline. In this embodiment, the method has the following advantages:

[0034] Due to the requirements of production cycle and workpiece cooling rate, the time required for descaling needs to be as short as possible. Therefore, an accumulator 106 is used to store water at a predetermined pressure in advance. After the deep hole forging 2 is adjusted into place by the robot 4, the fast solenoid valve 102 is fully opened within 0.2 seconds. The water in the accumulator 106 can be sprayed with water at a predetermined pressure of 4-6 MPa in a short time without waiting for the three-phase asynchronous motor 104 and the high-pressure crankshaft pump 105 to start.

[0035] Based on the current process, the descaling cycle time for general workpieces using high-pressure water is approximately one piece per minute. By employing an accumulator 106, a lower-flow-rate high-pressure crankshaft pump 105 and a lower-power three-phase asynchronous motor 104 can be selected. When nozzle 103 is not required, the three-phase asynchronous motor 104 can drive the high-pressure crankshaft water pump 105 to pre-fill the accumulator 106 with water. Once the pressure sensor in the pipeline detects that the pressure has reached a predetermined value, the three-phase asynchronous motor 104 can stop operating. This saves on equipment cost and size, reduces the required power, and lowers operating costs.

[0036] In Example 5, in S3, the high-pressure water in the accumulator 106 is injected into the deep hole at a rate of 0.3 L / s to 1.5 L / s.

[0037] In Example 6, in S3, the length of the deep hole is 200mm-500mm, and the diameter of the deep hole is 35mm-65mm. The water outlet shape of the nozzle 103 is adjusted by the fast solenoid valve 102. According to the process requirements and the distribution of oxide scale in the inner hole of the workpiece, the nozzle 103 can be used to spray water in different forms such as columnar or conical high-pressure water flow by adjusting the water flow speed of the fast solenoid valve 102. The robot 4 holds the workpiece and rotates and translates it to achieve better descaling effect and greater process flexibility.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for inner wall phosphor removal suitable for deep hole forging workpieces, comprising a foundation (5), an inner wall phosphor removal machine (1) and a robot (4), the inner wall phosphor removal machine (1) is installed in the pit part of the foundation (5), the robot (4) is located on the table top of the foundation (5) and is higher than the inner wall phosphor removal machine (1), characterized in that: The inner wall phosphor removal machine (1) includes a water tank (101), a quick electromagnetic valve (102) located on one side of the water tank (101). ​ 2. The inner wall phosphorus removal device suitable for a workpiece with a deep hole for forging according to claim 1, characterized in that: The quick electromagnetic valve (102) is connected with the water tank (101) through a high-pressure water pipeline; a nozzle (103) of the high-pressure water pipeline is located above an opening of the water tank (101) after penetrating through a side plate of the water tank (101), and a high-pressure water interface is further arranged on the high-pressure water pipeline and located on one side of the quick electromagnetic valve (102).

3. The phosphorus removing device for the inner wall of a workpiece with a deep hole according to claim 2, characterized in that: An energy storage mechanism is arranged on one side of the water tank (101) and connected with the water tank (101) through a bottom plate; the energy storage mechanism includes an energy accumulator (106), a three-phase asynchronous motor (104) connected with the energy accumulator (106), and the energy accumulator (106) is connected with the high-pressure water interface through an energy supply pipeline.

4. The inner wall phosphorus removing device suitable for the workpiece with deep hole forging of claim 3, characterized in that: A high-pressure crankshaft pump (105) is arranged between the three-phase asynchronous motor (104) and the energy accumulator (106); the three-phase asynchronous motor (104) is connected with and controls the high-pressure crankshaft pump (105) through a power supply circuit.

5. The phosphorus removing device for the inner wall of the workpiece with deep hole forging according to claim 2, characterized in that: A screen (108) is arranged below the nozzle (103), and a screen partition plate (107) is arranged between the screen (108) and the nozzle (103).

6. The apparatus for removing phosphorus from the inner wall of a workpiece with a deep hole according to claim 3, wherein The water tank (101) is internally provided with a tank body one (110) and a tank body two (111), a screen filter plate (109) is arranged between the tank body one (110) and the tank body two (111), and a filtered water pipeline (112) is arranged between the tank body two (111) and the energy accumulator (106).

7. The phosphorus removing device for the inner wall of a workpiece with a deep hole according to claim 5, characterized in that: An opening of the nozzle (103) is vertically upward, a deep hole forge piece (2) is arranged above the opening, the deep hole forge piece (2) is fixed on a clamping jaw (3) of a robot (4), the clamping jaw (3) is connected with the robot (4) through a degree-of-freedom swing arm (6), and a deep hole of the deep hole forge piece (2) is centered with the opening of the nozzle (103).

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