A multi-directional forging low temperature forming method for controlling forging quality

Abstract

The present invention discloses a multi-directional forging low temperature forming method for controlling the quality of forgings, including a forging method of multi-directional upsetting and low temperature forming, so that the core of the forging is fully deformed, the defects of the steel ingot are effectively closed, and the grain size inside and outside the forging and in different fiber directions is consistent. The specific steps are as follows: Step 1, heating the steel ingot: Step 2, upsetting and drawing: the nozzle pressure clamp target is placed in the upsetting leak plate for overall upsetting and drawing, the upsetting height is 40-60% of the original height, and a wide anvil is used to strengthen the steel ingot. The invention discloses a method for forging a square. The invention discloses a method for forging a square. The method comprises the following steps: first, the square is forged by a forging method, and the square is forged by a forging method. The square is forged by a forging method, and the height-diameter ratio is controlled within the range of 2.5 to 2.8. Step 3, upsetting and flattening: the square is upset by 90 degrees and the blank is upset by 60 to 65%. The square is upset by a deformation method without tensile stress with an anvil width of 0.5. The square is forged by a TER forging method, and the double-sided deformation is controlled to be 30 to 35%. Step 4, chamfering the flattened square: the square is forged by 90 degrees and then the flattened square is forged to the flattened square size in step 3, and the deformation is left at 30 to 35%. Step 5, forging and forming. The invention improves the stability and reliability of the forging quality.

Description

Technical Field

[0001] The invention relates to the technical field of forging, and in particular to a multi-directional forging low-temperature forming method for controlling the quality of forgings. Background Art

[0002] High-strength alloy steel products, gear forgings and shaft forgings are widely used in aerospace vehicles, infantry fighting vehicles, ships and other fields. They have the characteristics of corrosion resistance, high strength, low temperature resistance, weather resistance, etc., and are one of our company's main products.

[0003] In the forging process of the industry, there are still common problems such as internal looseness and defects of forgings, low product flaw detection pass rate, and too coarse grains in local microstructures, which lead to poor forging reliability and stability.

[0004] Based on the above problems, it is necessary to improve the stability and reliability of the forging quality of high-strength alloy steel forgings by improving the existing forging methods. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a multi-directional forging low temperature forming method for controlling the quality of forgings, aiming to improve the stability and reliability of the forging quality of high-strength alloy steel forgings. The specific technical solution is as follows:

[0006] A multi-directional forging low temperature forming method for controlling the quality of forgings comprises the following steps: through a forging method of multi-directional upsetting and low temperature forming, the core of the forging is fully deformed, the defects of the steel ingot are effectively closed, and the grain sizes inside and outside the forging and in different fiber directions are made consistent. The multi-directional upsetting and low temperature forming forging method comprises the following steps:

[0007] Step 1: Ingot heating: sawing the ingot riser, loading the furnace and heating;

[0008] Step 2, upsetting and drawing: the nozzle pressure clamp target is placed in the upsetting leak plate for overall upsetting and drawing; the forging process parameters of the upsetting and drawing are as follows: the upsetting height is 40-60% of the original height, and the wide anvil strong pressure method is used for drawing, and the height-to-diameter ratio is controlled in the range of 2.5-2.8;

[0009] Step 3, upsetting and flattening the square; turning the upsetting and flattening by 90°; the forging process parameters of the upsetting and flattening are as follows: the billet is upset by 60-65%, the upsetting is performed by the non-tensile stress deformation method with anvil width of 0.5, the flattening is performed by the TER forging method, and the double-sided deformation is controlled to be 30-35%;

[0010] Step 4, draw the flat square and chamfer; the forging process parameters of the draw flat square chamfer are as follows: turn the flat square 90 degrees and then draw the flat square to the flat square size of step 3 and chamfer, leaving 30-35% deformation;

[0011] Step 5, forging; the forging process parameters of the forging are as follows: after blanking in step 4, air cooling to 550-650°C, then heating to 100-150°C above the forging Ac3, and direct forming based on the deformation amount left in step 4.

[0012] As a further improvement of the present invention, during the forging process of steps 1 to 5, a heat-insulating combustion pad is provided between the forging and the anvil to reduce direct contact heat transfer between the forging and the anvil, thereby slowing down the temperature drop of the forging at the contact point of the anvil; the heat-insulating combustion pad contains high-temperature resistant insulating material and combustible material.

[0013] As a preferred embodiment of the heat insulating combustion pad of the present invention, the heat insulating combustion pad comprises two upper and lower aluminum silicate fiber felt layers and a fuel layer wrapped between the upper and lower aluminum silicate fiber felt layers.

[0014] As one of the preferred schemes of the fuel layer in the present invention, the fuel layer is a liquid fuel layer, and the liquid fuel layer is a closed fuel bag array formed by arranging a number of closed fuel bags laid between the upper and lower layers of aluminum silicate fiber felt through a matrix array, and each of the closed fuel bags is filled with liquid fuel.

[0015] As a second preferred solution of the fuel layer in the present invention, the fuel layer is a solid powder fuel layer, and the powder fuel of the solid powder fuel layer is packaged in a powder fuel bag.

[0016] As another preferred embodiment of the heat-insulating combustion pad in the present invention, the heat-insulating combustion pad is a flexible heat-insulating combustion pad made of high-temperature resistant aluminum silicate fiber felt, flexible combustible fiber and flexible bonding fiber. The specific manufacturing method of the flexible heat-insulating combustion pad is as follows:

[0017] (1) Mixing: The flexible combustible fiber and the flexible bonding fiber are mixed in a certain proportion to form a combustible mixed fiber;

[0018] (2) Preparation of combustible mixed fiber felt: the combustible mixed fiber is combed and laid by a combing and laying machine, and then needled by a needle punching machine to form a combustible mixed fiber felt;

[0019] (3) Preparation of heat-insulating combustion coiled material: at least two layers of combustible mixed fiber felt are laid between two layers of commercially available high-temperature resistant aluminum silicate fiber felt, and the felt is needle-punched to form a heat-insulating combustion felt, which is then hot-rolled to form a flexible heat-insulating combustion coiled material;

[0020] (4) Cutting: Cut the flexible thermal insulation combustion coil into flexible thermal insulation combustion pads of certain specifications.

[0021] As a further improvement of the present invention, a pulse point-controlled flame spraying device for keeping the exposed parts of the forging during the forging process warm is also provided at the periphery of the forging station of the forging, and the pulse point-controlled flame spraying device includes a pair of pulse point-controlled flame spraying manipulators disposed on both sides of the periphery of the forging station, a pulse flame spraying gun clamped at the front end of the pulse point-controlled flame spraying manipulator, and a number of infrared thermal imaging temperature monitors disposed around the periphery of the forging station for monitoring the temperature of the exposed parts of the forging.

[0022] Preferably, the pulse point-controlled flame spraying manipulator, the pulse flame spraying gun and the infrared thermal imaging temperature monitor are respectively connected to a control system; the control system dynamically controls the movement of the pulse point-controlled flame spraying manipulator and the opening and closing of the pulse flame spraying gun according to the temperature field of the exposed part of the forging monitored in real time by the infrared thermal imaging temperature monitor, and implements pulse point-controlled flame spraying at points with relatively low temperature on the exposed part of the forging to improve the uniformity of temperature at each point on the exposed part of the forging.

[0023] In the present invention, the pulse point-controlled flame spraying manipulator is a multi-axis articulated arm manipulator.

[0024] In the present invention, a pad taking and placing robot for laying a flexible heat-insulating combustion pad between the forging and the anvil is also provided at the periphery of the forging station of the forging, a seat plate is provided at the front end of the pad taking and placing robot, four servo electric push rods are arranged on the seat plate obliquely downward along the circumferential direction, vacuum suction cups are horizontally provided at the front ends of the telescopic rods of the four servo electric push rods, and an infrared ranging sensor for detecting whether the flexible heat-insulating combustion pad grasped on the four vacuum suction cups is flattened is provided at the center position of the lower end of the seat plate.

[0025] The infrared ranging sensor is responsible for monitoring whether the center point height of the flexible thermal insulation combustion pad is consistent with the lower plane height of the vacuum suction cup. When the flexible thermal insulation combustion pad sags, the control system drives the telescopic rods of the four servo electric push rods to extend simultaneously until the flexible thermal insulation combustion pad is flattened.

[0026] The servo electric push rod is tilted downward so that the infrared distance sensor is at a safe distance from the flexible heat-insulating combustion pad, thereby protecting the infrared distance sensor from being affected by high temperature.

[0027] The beneficial effects of the present invention are:

[0028] First, the multi-directional forging low-temperature forming method of the present invention for controlling the quality of forgings adopts specially designed multi-directional forging process and multi-directional forging process parameters, which greatly reduces the internal looseness and defects of the forgings compared with the conventional free forging method, and greatly improves the product flaw detection pass rate, and the microstructure grains of the forgings are also refined and improved.

[0029] Second, the present invention provides a multi-directional forging low-temperature forming method for controlling the quality of forgings. During forging, a heat-insulating combustion pad is arranged between the forging and the anvil. During forging and upsetting, the heat-insulating combustion pad can spontaneously ignite under the action of the high temperature of the forging. The heat generated after the fuel in the heat-insulating combustion pad burns can strongly heat the low-temperature surface of the anvil, thereby avoiding the disadvantages of fast heat loss rate and relatively low temperature of the contact part between the forging and the anvil caused by the contact between the high-temperature forging and the lower temperature anvil. After the fuel in the heat-insulating combustion pad is burned out, the insulating material in the heat-insulating combustion pad can still be relied on to block the heat transfer of the forging to the anvil, so that the heat-insulating combustion pad plays a dual role of heat replenishment and temperature maintenance and heat transfer blocking, thereby improving the uniformity of the overall temperature of the forging surface and improving the stability and reliability of the forging quality of high-strength alloy steel forgings.

[0030] Third, the present invention provides a multi-directional forging low-temperature forming method for controlling the quality of forgings. The heat-insulating combustion pad uses high-temperature resistant aluminum silicate fiber as the main insulation material. It is non-woven with flexible combustible fibers and flexible bonding fibers through a needle punching method. The formed flexible heat-insulating combustion pad can delay the combustion speed of fuel, thereby better adapting to the special requirements of forging processing.

[0031] Fourth, in a multi-directional forging low-temperature forming method for controlling the quality of forgings of the present invention, the infrared thermal imaging temperature monitor and the pulse point-controlled flame spray device can cooperate with each other to dynamically manage the temperature of the exposed parts of the forgings during the forging process, and when necessary, can promptly send pulse combustion heat to the points with lower temperatures of the forgings, thereby further improving the uniformity of the surface temperature of the forgings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of a forging process of a multi-directional forging low temperature forming method for controlling the quality of forgings of the present invention;

[0033] Figure 2 is Figure 1 A schematic diagram of a forging process of a multi-directional forging method further improved on the basis of the forging process;

[0034] Figure 3 It is to set a heat-insulating combustion pad between the forging and the anvil during forging (top view);

[0035] Figure 4 is Figure 3 A schematic diagram of the device after an infrared thermal imaging temperature monitor and a pulse point-controlled flame spray device (pulse point-controlled flame spray manipulator) are added to the device;

[0036] Figure 5 It is a schematic diagram of the structure in which the fuel layer in the heat-insulating combustion pad uses powdered fuel;

[0037] Figure 6 It is a schematic diagram of the structure in which the fuel layer in the heat-insulating combustion pad uses liquid fuel;

[0038] Figure 7 It is a schematic diagram of making a flexible heat-insulating combustion mat using high-temperature-resistant aluminum silicate fiber felt, flexible combustible fiber and flexible bonding fiber;

[0039] Figure 8 It is a schematic diagram of a structure in which a vacuum suction cup is arranged at the front end of a pad picking and placing robot;

[0040] Fig. 9 The invention is a structural schematic diagram of arranging a pulse flame spray gun at the front end of a pulse point-controlled flame spray manipulator.

[0041] In the figure: 1. forging, 2. anvil (lower anvil), 3. heat-insulating combustion pad, 4. aluminum silicate fiber felt layer, 5. fuel layer, 6. closed fuel bag, 7. powdered fuel, 8. powdered fuel bag, 9. high-temperature resistant aluminum silicate fiber felt, 10. combustible mixed fiber felt, 11. pulse point-controlled flame spraying device, 12. forging station, 13. pulse point-controlled flame spraying manipulator, 14. pulse flamethrower, 15. infrared thermal imaging temperature monitor, 16. pad taking and placing manipulator, 17. seat plate, 18. servo electric push rod, 19. vacuum suction cup, 20. infrared ranging sensor. DETAILED DESCRIPTION

[0042] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0043] Embodiment 1:

[0044] like Figures 1 to 9 The figure shows an embodiment of a multi-directional forging low temperature forming method for controlling the quality of forgings of the present invention, comprising the following steps: through a forging method of multi-directional upsetting and low temperature forming, the core of the forging is fully deformed, the defects of the steel ingot are effectively closed, and the grain sizes inside and outside the forging and in different fiber directions are made consistent. The multi-directional upsetting and low temperature forming forging method comprises the following steps:

[0045] Step 1: Ingot heating: sawing the ingot riser, loading the furnace and heating;

[0046] Step 2, upsetting and drawing: the nozzle pressure clamp target is placed in the upsetting leak plate for overall upsetting and drawing; the forging process parameters of the upsetting and drawing are as follows: the upsetting height is 40-60% of the original height, and the wide anvil strong pressure method is used for drawing, and the height-to-diameter ratio is controlled in the range of 2.5-2.8;

[0047] Step 3, upsetting and flattening the square; turning the upsetting and flattening by 90°; the forging process parameters of the upsetting and flattening are as follows: the billet is upset by 60-65%, the upsetting is performed by the non-tensile stress deformation method with anvil width of 0.5, the flattening is performed by the TER forging method, and the double-sided deformation is controlled to be 30-35%;

[0048] Step 4, draw the flat square and chamfer; the forging process parameters of the draw flat square chamfer are as follows: turn the flat square 90 degrees and then draw the flat square to the flat square size of step 3 and chamfer, leaving 30-35% deformation;

[0049] Step 5, forging; the forging process parameters of the forging are as follows: after blanking in step 4, air cooling to 550-650°C, then heating to 100-150°C above the forging Ac3, and direct forming based on the deformation amount left in step 4.

[0050] As a further improvement of this embodiment, during the forging process of steps 1 to 5, a heat-insulating combustion pad 3 is provided between the forging 1 and the anvil 2 to reduce direct contact heat transfer between the forging 1 and the anvil 2, thereby slowing down the temperature drop of the forging 1 at the contact point of the anvil 2; the heat-insulating combustion pad 3 contains high-temperature resistant insulation material and combustible material.

[0051] As a preferred solution of the heat-insulating combustion pad 3 in this embodiment, the heat-insulating combustion pad 3 includes two upper and lower layers of aluminum silicate fiber felt layers 4 and a fuel layer 5 wrapped between the upper and lower layers of aluminum silicate fiber felt layers 4.

[0052] As one of the preferred schemes for the fuel layer in this embodiment, the fuel layer 5 is a liquid fuel layer, and the liquid fuel layer is a closed fuel bag array formed by arranging a number of closed fuel bags 6 laid between the upper and lower layers of aluminum silicate fiber felt layers 4 in a matrix array, and each of the closed fuel bags 6 is filled with liquid fuel.

[0053] As the second preferred solution of the fuel layer in this embodiment, the fuel layer 5 is a solid powder fuel layer, and the powder fuel of the solid powder fuel layer is packaged in a powder fuel bag 8.

[0054] As another preferred embodiment of the heat-insulating combustion pad in this embodiment, the heat-insulating combustion pad 3 is a flexible heat-insulating combustion pad made of high-temperature resistant aluminum silicate fiber felt 9, flexible combustible fibers and flexible bonding fibers. The specific manufacturing method of the flexible heat-insulating combustion pad 3 is as follows:

[0055] (1) Mixing: The flexible combustible fiber and the flexible bonding fiber are mixed in a certain proportion to form a combustible mixed fiber;

[0056] (2) Preparation of combustible mixed fiber felt: the combustible mixed fiber is combed and laid by a combing and laying machine, and then needled by a needle punching machine to form a combustible mixed fiber felt 10;

[0057] (3) Preparation of heat-insulating combustion coiled material: at least two layers of combustible mixed fiber felt 10 are laid between two layers of commercially available high-temperature resistant aluminum silicate fiber felt 9, and the heat-insulating combustion felt is formed by needle punching, and then hot rolling is performed to form a flexible heat-insulating combustion coiled material;

[0058] (4) Cutting: Cut the flexible heat-insulating combustion coil into flexible heat-insulating combustion pads 3 of certain specifications.

[0059] As a further improvement of this embodiment, a pulse point-controlled flame spraying device 11 for keeping the exposed parts of the forging 1 during the forging process is also provided on the periphery of the forging station 12 of the forging 1. The pulse point-controlled flame spraying device 11 includes a pair of pulse point-controlled flame spraying manipulators 13 disposed on both sides of the periphery of the forging station 12, a pulse flame spraying gun 14 clamped at the front end of the pulse point-controlled flame spraying manipulator 13, and a number of infrared thermal imaging temperature monitors 15 disposed around the periphery of the forging station 12 for monitoring the temperature of the exposed parts of the forging 1.

[0060] Preferably, the pulse point-controlled flame spraying manipulator 13, the pulse flame spraying gun 14 and the infrared thermal imaging temperature monitor 15 are respectively connected to a control system; the control system dynamically controls the movement of the pulse point-controlled flame spraying manipulator 13 and the opening and closing of the pulse flame spraying gun 14 according to the temperature field of the exposed part of the forging 1 monitored in real time by the infrared thermal imaging temperature monitor 15, and implements pulse point-controlled flame spraying at points with relatively low temperatures on the exposed part of the forging 1, so as to improve the uniformity of the temperature of each point on the exposed part of the forging 1.

[0061] In this embodiment, the pulse point controlled flame spraying manipulator 13 is a multi-axis articulated arm manipulator.

[0062] In this embodiment, a pad taking and placing robot 16 for laying a flexible heat-insulating combustion pad between the forging 1 and the anvil 2 is also provided on the periphery of the forging station 12 of the forging 1, and a seat plate 17 is provided at the front end of the pad taking and placing robot 16, and four servo electric push rods 18 are arranged on the seat plate 17 obliquely downward and circumferentially at intervals, and vacuum suction cups 19 are horizontally provided at the front ends of the telescopic rods of the four servo electric push rods 18. An infrared ranging sensor 20 for detecting whether the flexible heat-insulating combustion pad 3 grasped on the four vacuum suction cups 19 is flattened is provided at the center position of the lower end of the seat plate 17.

[0063] The infrared ranging sensor 20 is responsible for monitoring whether the center point height of the flexible thermal insulation combustion pad 3 is consistent with the lower plane height of the vacuum suction cup. When the flexible thermal insulation combustion pad 3 sags, the control system drives the telescopic rods of the four servo electric push rods 18 to extend simultaneously until the flexible thermal insulation combustion pad 3 is flattened.

[0064] The servo electric push rod 18 is tilted downward, so that the infrared distance sensor 20 is at a safe distance from the flexible heat-insulating combustion pad 3, thereby protecting the infrared distance sensor 20 from being affected by high temperature.

[0065] Embodiment 2:

[0066] A batch of 20 roll end flat head forgings were forged by the multi-directional forging method of Example 1, and then post-forging inspection was performed to count the number of unqualified pieces with excessive internal loose defects, the number of unqualified flaw detection, and the number of unqualified pieces with coarse grains in the internal microstructure of the forgings, and compared with the conventional free forging method. The results are as follows:

[0067]

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-directional forging low temperature forming method for controlling the quality of forgings, characterized in that: The method comprises the following steps: through a forging method of multi-directional upsetting and low temperature forming, the core of the forging is fully deformed, the defects of the steel ingot are effectively closed, and the grain sizes inside and outside the forging and in different fiber directions are made consistent. The forging method of multi-directional upsetting and low temperature forming comprises the following steps: Step 1, ingot heating: sawing the ingot riser, loading the furnace for heating; Step 2, upsetting and drawing: the nozzle pressure clamp target is placed in the upsetting drain plate for overall upsetting and drawing; the forging process parameters of the upsetting and drawing are as follows: the upsetting height is 40-60% of the original height, and the wide anvil strong pressure method is used for drawing, and the height-to-diameter ratio is controlled in the range of 2.5-2.8; Step 3, upsetting and flattening the square; turning the upsetting and flattening by 90 degrees; the forging process parameters of the upsetting and flattening are as follows: the billet is upset by 60-65%, upsetting is performed by a non-tensile stress deformation method with an anvil width of 0.5, and the TER forging method is used to flatten the square, and the double-sided deformation is controlled to be 30-35%; Step 4, draw the flat square and chamfer; the forging process parameters of the draw flat square chamfer are as follows: turn the flat square 90 degrees and then draw the flat square to the flat square size of step 3 and then chamfer, leaving 30-35% deformation; Step 5, forging; the forging process parameters of the forging are as follows: after the blank is opened in step 4, it is air-cooled to 550~650℃, and then heated to 100~150℃ above the forging Ac3, and direct forming is performed based on the deformation amount left in step 4.

2. A multi-directional forging low temperature forming method for controlling forging quality according to claim 1, characterized in that: During the forging process of steps 1 to 5, a heat-insulating combustion pad is provided between the forging and the anvil to reduce direct contact heat transfer between the forging and the anvil, thereby slowing down the temperature drop of the forging at the contact point of the anvil; the heat-insulating combustion pad contains high-temperature resistant insulation material and combustible material.

3. A multi-directional forging low temperature forming method for controlling forging quality according to claim 2, characterized in that: The heat-insulating combustion pad comprises two upper and lower aluminum silicate fiber felt layers and a fuel layer wrapped between the upper and lower aluminum silicate fiber felt layers.

4. A multi-directional forging low temperature forming method for controlling forging quality according to claim 3, characterized in that: The fuel layer is a liquid fuel layer, which is a closed fuel bag array formed by arranging a number of closed fuel bags laid between the upper and lower aluminum silicate fiber felt layers in a matrix array, and each of the closed fuel bags is filled with liquid fuel.

5. A multi-directional forging low temperature forming method for controlling forging quality according to claim 3, characterized in that: The fuel layer is a solid powder fuel layer, and the powder fuel of the solid powder fuel layer is packaged in a powder fuel bag.

6. A multi-directional forging low temperature forming method for controlling forging quality according to claim 2, characterized in that: The heat-insulating combustion pad is a flexible heat-insulating combustion pad made of high-temperature resistant aluminum silicate fiber felt, flexible combustible fiber and flexible bonding fiber. The specific manufacturing method of the flexible heat-insulating combustion pad is as follows: (1) Ingredients: Flexible combustible fibers and flexible bonding fibers are mixed in a certain proportion to form combustible mixed fibers; (2) Production of combustible mixed fiber felt: The combustible mixed fiber is combed and laid through a combing and web laying machine, and then needled through a needle punching machine to form a combustible mixed fiber felt; (3) Preparation of heat-insulating combustion coiled materials: at least two layers of combustible mixed fiber felt are laid between two layers of high-temperature resistant aluminum silicate fiber felt, and the heat-insulating combustion felt is made by needle punching, and then hot rolling is performed to form a flexible heat-insulating combustion coiled material; (4) Cutting: Cut the flexible thermal insulation combustion coil into flexible thermal insulation combustion pads of certain specifications.

7. A multi-directional forging low temperature forming method for controlling forging quality according to claim 1, characterized in that: A pulse point-controlled flame spraying device is also provided at the periphery of the forging station for heat preservation of the exposed parts of the forging during the forging process. The pulse point-controlled flame spraying device comprises a pair of pulse point-controlled flame spraying manipulators disposed at both sides of the periphery of the forging station, a pulse flame spraying gun clamped at the front end of the pulse point-controlled flame spraying manipulator, and a number of infrared thermal imaging temperature monitors disposed around the periphery of the forging station for temperature monitoring of the exposed parts of the forging.

8. A multi-directional forging low temperature forming method for controlling forging quality according to claim 7, characterized in that: The pulse point-controlled flame spraying manipulator, the pulse flame spraying gun and the infrared thermal imaging temperature monitor are respectively connected to a control system; the control system dynamically controls the movement of the pulse point-controlled flame spraying manipulator and the opening and closing of the pulse flame spraying gun according to the temperature field of the exposed part of the forging monitored in real time by the infrared thermal imaging temperature monitor, and implements pulse point-controlled flame spraying at points with relatively low temperatures on the exposed part of the forging to improve the uniformity of temperature at each point on the exposed part of the forging.

9. A multi-directional forging low temperature forming method for controlling forging quality according to claim 8, characterized in that: The pulse point-controlled flame spraying manipulator is a multi-axis joint arm manipulator.

10. A multi-directional forging low temperature forming method for controlling forging quality according to claim 1, characterized in that: A pad taking and placing robot for laying a flexible heat-insulating combustion pad between the forging and the anvil is also provided at the periphery of the forging station. A seat plate is provided at the front end of the pad taking and placing robot, and four servo electric push rods are arranged on the seat plate obliquely downward along the circumferential direction at intervals. Vacuum suction cups are horizontally provided at the front ends of the telescopic rods of the four servo electric push rods, and an infrared ranging sensor for detecting whether the flexible heat-insulating combustion pad grasped on the four vacuum suction cups is flattened is provided at the center position of the lower end of the seat plate.

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