Ring swaging quenching device and quenching method

Abstract

This invention relates to the field of heat treatment technology for ring-shaped workpieces, and particularly to a quenching device and method for ring forgings. It includes a quenching chamber, a heating assembly, a piston plate, a cleaning assembly, a position adjustment assembly, and a limiting assembly. The quenching chamber is divided into a heating chamber, an inlet / outlet chamber, and a cooling chamber by a partition plate; the heating assembly is located in the heating chamber; the piston plate is located below the coolant in the cooling chamber; the cleaning assembly is located behind the inlet / outlet chamber and mates with the outer ring and one end of the ring forging. The position adjustment assembly is located between the cleaning assembly and the chamber door; the limiting assembly is mounted on the position adjustment assembly. This invention provides a centralized cleaning-heating-cooling functional structure matched to the ring forging structure, enabling independent, continuous, automatic, efficient, and intelligent quenching operations on the ring forging. The operation method is simple and facilitates the processing of ring forgings.

Description

Technical Field

[0001] This invention relates to the field of heat treatment technology for ring-shaped workpieces, and in particular to a quenching device and quenching method for ring forgings. Background Technology

[0002] Quenching ring forgings rapidly cools the material, causing martensite to form within the material and increasing its hardness. This increased hardness makes the ring forgings more resistant to wear and extends their service life. Quenching also optimizes the material's strength, toughness, and fatigue properties. Quenching requires heating the ring forging above its critical temperature (typically 850°C to 950°C) to ensure complete austenitization. This temperature is then maintained for a sufficient time to allow for uniform temperature distribution and complete microstructural transformation. The ring forging is then rapidly immersed in a cooling medium (such as water, oil, or a polymer solution), with the cooling rate depending on the material and requirements. After quenching, tempering is performed to reduce internal stress, improve toughness, and prevent brittle fracture.

[0003] Chinese patent application CN118480674A discloses a large ring forging quenching heat treatment equipment, specifically including: a base plate, an arc-shaped vertical plate fixedly connected to the top of the base plate, a top plate fixedly connected to the top of the arc-shaped vertical plate, a heating cylinder fixedly connected to the top of the top plate, a heat insulation plate fixedly connected to the bottom of the top plate, and a cooling cylinder fixedly connected to the top of the base plate; the large ring forging quenching heat treatment equipment further includes: a heating mechanism for placing and heating raw materials, the heating mechanism being fixedly connected inside the heating cylinder, the heating mechanism including an annular slide rail, a first telescopic rod slidably connected inside the annular slide rail, a first adjusting plate fixedly connected to the top of the first telescopic rod, a bent rod fixedly connected to the outside of the first adjusting plate, and a rotating assembly fixedly connected to the outside of the bent rod.

[0004] The aforementioned ring forging quenching device integrates the heating and cooling mechanisms, but requires manual repositioning and adjustment of the ring forging. It doesn't truly combine the heating and cooling functions with the ring structure, making it highly reliant on manual labor. Furthermore, due to the ring structure, moving and transferring the ring forging is time-consuming and labor-intensive, resulting in insufficient automation. In addition, the open design leads to insufficient heat preservation during heating, affecting the quenching effect. Cooling operations also generate a large amount of high-temperature steam leakage, posing a safety hazard. Summary of the Invention

[0005] To address the problems existing in the background technology, a quenching device and quenching method for ring forgings are proposed. The entire quenching process is based on the structural characteristics of the ring forgings, focusing on the cleaning, heating and cooling functions of the inner and outer rings of the ring forgings. The quenching process is independent, continuous, automatic, efficient and intelligent, and the operation method is simple, which is conducive to the processing of ring forgings.

[0006] This invention proposes a quenching device for ring forgings, comprising a quenching chamber, a heating assembly, a piston plate, a cleaning assembly, a position adjustment assembly, and a limiting assembly. The quenching chamber has two partition plates with circular openings positioned vertically, one above the other, and a door at the front for the ring forging to enter and exit. The internal space is divided from top to bottom by the partition plates into a heating chamber, an inlet / outlet chamber, and a cooling chamber. The cooling chamber is filled with coolant. The inlet / outlet chamber is positioned opposite the door. The heating assembly is located in the heating chamber and achieves simultaneous heating of the outer and inner rings of the ring forging by setting a heating structure that matches the dimensions of the inner and outer rings. The piston plate is located below the coolant in the cooling chamber; its vertical movement moves the coolant in and out of the cooling chamber and submerges the ring forging. The cleaning assembly is located behind the inlet / outlet chamber and engages with the outer ring and one end of the ring forging. The position adjustment assembly is located between the cleaning assembly and the door. The limiting component is set on the position adjustment component. It cooperates with the inner ring and the other end of the ring forging to limit the ring forging in the air. At the same time, the position adjustment component drives the ring forging to move back and forth and flip over to realize material feeding, discharging and cleaning. On the other hand, the position adjustment component drives the ring forging to move up and down and flip over. The limiting component extends into the upper and lower isolation ports respectively to make the ring forging enter the heating chamber and cooling chamber, and complete heating and cooling in a sealed environment.

[0007] Preferably, the position adjustment component includes a lifting platform that moves up and down between two sets of isolation plates, driven by a first drive structure; a mounting rod that moves back and forth between the door and the cleaning component, driven by a second drive structure, is provided on the lifting platform; a mounting seat is provided on the mounting rod; the mounting seat is rotated to be opposite to the door, the upper isolation port, the cleaning component, and the lower isolation port, driven by a third drive structure; and a limiting component is provided on the mounting seat.

[0008] Preferably, the limiting component is located at the center of the mounting base; a sealing ring groove is provided around the outer periphery of the mounting base; sealing rings are provided on both the inner and outer ring edges of the sealing ring groove, and a ring-shaped filter screen is provided on the groove opening; negative pressure is formed in the groove by an air pump; the size of the sealing ring groove is larger than the isolation opening; the size of the limiting component is smaller than the isolation opening; and a sealing door is provided on the isolation opening.

[0009] Preferably, the limiting component includes a limiting platform rotatably mounted on the mounting base; a ring of limiting elements is provided on the limiting platform; the limiting elements include a limiting frame one slidably mounted on the limiting platform by a driving structure four; one end of the limiting frame one is rotatably mounted by a driving structure five; during operation, the limiting frame one and the limiting frame two form an L-shaped structure one.

[0010] Preferably, the cleaning assembly includes a mounting platform located on the rear wall of the inlet / outlet cavity; a cleaning disc is rotatably mounted on the mounting platform; a ring of cleaning components is mounted on the cleaning disc; the cleaning components include a cleaning frame 1 that is slidably mounted on the cleaning disc by a driving structure 6; a cleaning frame 2 that is rotatably mounted on one end of the cleaning frame 1 by a driving structure 7; during operation, the cleaning frame 1 and the cleaning frame 2 form an L-shaped structure 2.

[0011] Preferably, when the limiting platform and the mounting platform are positioned relative to each other, the L-shaped structure acts on the inner ring wall and bottom of the ring forging; the L-shaped structure acts on the outer ring wall and top of the ring forging; the action modes include limiting and cleaning.

[0012] Preferably, the heating structure of the heating assembly includes a heat-insulating cylinder located in the heating chamber and connected to the isolation port at its lower end; the heat-insulating cylinder is provided with an outer ring heating frame that moves up and down and an inner ring heating head located in the outer ring heating frame. The heat-insulating cylinder has an annular cavity structure, and the difference between its inner diameter and outer diameter is 1.1-1.3 times the wall thickness of the ring forging; an annular heating space is left between the inner ring heating head and the outer ring heating frame for the ring forging to enter.

[0013] Preferably, a positioning frame is provided at the bottom of the piston plate; a pressure regulating platform is provided below the positioning frame; the pressure regulating platform is connected to a gas pump through a pipeline; and a cooling filter box for refrigerant to enter and exit is provided outside the quenching box.

[0014] Preferably, the cooling filter box includes a box body; a filter screen is installed inside the box body and is divided into two spaces, one above the other; the inlet end of the liquid inlet pipe is for unidirectional liquid inflow and the outlet end extends into the space below the filter screen; the outlet end of the liquid outlet pipe is for unidirectional liquid outflow and the inlet end extends into the space above the filter screen.

[0015] This invention further proposes a method for quenching ring forgings, using the aforementioned ring forging quenching device. The steps are as follows: The operator places the ring forging into the chamber through the door and uses a limiting component to limit its movement by engaging with the inner ring and ends of the ring forging; then, driven by a position adjusting component, the ring forging moves backward and flips to the cleaning component, where it is cleaned by engaging with the outer ring and ends of the ring forging; next, driven by the position adjusting component, the ring forging flips and moves upward to extend into the upper isolation port, entering the heating chamber, where the inner and outer rings are simultaneously heated by the heating component in a sealed environment and held at that temperature until austenitization is complete; then, driven by the position adjusting component, the ring forging flips and moves downward to extend into the lower isolation port, entering the cooling chamber and being cooled by immersion in refrigerant in a sealed environment; tempering is performed if necessary; finally, driven by the position adjusting component, the ring forging moves and flips back to the chamber door; the operator removes the ring forging.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The heating chamber, inlet / outlet chamber, and cooling chamber are arranged from top to bottom. Driven by the position adjustment component, the ring forging first moves backward and flips to align with the cleaning component. L-shaped structures one and two work together to perform inner ring limiting-outer ring cleaning or outer ring limiting-inner ring cleaning on the ring forging. Then, by flipping and moving upward, the ring forging enters the heating chamber. The outer ring heating frame and inner ring heating head rise and fall synchronously to generate heat, coordinating with the rotation of the ring forging to ensure uniform heating of both the inner and outer rings. Then, by flipping and moving downward, the ring forging enters the cooling chamber. The piston plate, by rising and falling, adjusts the liquid level to ensure the ring forging is always immersed in the refrigerant, and controls the refrigerant to repeatedly enter and exit the cooling chamber, achieving filtration and cooling to ensure the quenching effect. The entire quenching process is based on the structural characteristics of the ring forging, focusing on the cleaning, heating, and cooling functions of the inner and outer rings of the ring forging. The quenching process is independent, continuous, automatic, efficient, and intelligent, with simple operation methods, which is conducive to the processing of ring forgings. Attached Figure Description

[0017] Figure 1 This is an external view of the quenching device for ring forgings;

[0018] Figure 2 This is a diagram showing the internal structure of a quenching device for ring forgings.

[0019] Figure 3 This is a sectional view of the quenching box;

[0020] Figure 4 A schematic diagram of the combination of the position adjustment component and the limit component (view 1);

[0021] Figure 5 A schematic diagram of the combination of the position adjustment component and the limit component (viewpoint 2);

[0022] Figure 6 A schematic diagram of the combination of the position adjustment component and the limit component (viewpoint 3);

[0023] Figure 7 for Figure 5 Enlarged view of point A in the middle;

[0024] Figure 8 This is a structural diagram of the cleaning components;

[0025] Figure 9 for Figure 8 Enlarged view at point B in the middle;

[0026] Figure 10 This is a cross-sectional view of the insulation cylinder;

[0027] Figure 11 This is a diagram showing the combination of the piston plate, pressure regulating platform, and air pump.

[0028] Figure 12 This is a split view of the cooling filter box.

[0029] Reference numerals: 1. Quenching box; 101. Inlet / outlet chamber; 102. Heating chamber; 103. Cooling chamber; 104. Positioning frame; 2. Isolation plate; 201. Sealing door; 3. Heating assembly; 301. Insulation cylinder; 302. Electrically controlled slide rail; 303. Outer ring heating frame; 304. Inner ring heating head; 305. Connecting rod; 4. Piston plate; 5. Position adjustment assembly; 501. Lead screw two; 502. Lead screw one; 503. Lifting platform; 504. Mounting rod; 505. Mounting seat; 506. Sealing ring groove; 507. Sealing ring; 508. Air pump; 6. Limiting components; 601, limiting platform; 602, limiting element; 60201, limiting frame one; 60202, lead screw three; 60203, motor six; 60204, limiting frame two; 7, cleaning components; 701, mounting platform; 702, cleaning element; 70201, cleaning frame one; 70202, lead screw four; 70203, motor seven; 70204, cleaning frame two; 703, cleaning tray; 9, cooling filter box; 901, box body; 902, filter screen; 903, liquid inlet pipe; 904, liquid outlet pipe; 8, air pump; 10, pressure regulating platform. Detailed Implementation

[0030] Example 1, as Figures 1-3 As shown, this invention proposes a quenching device for ring forgings, including a quenching chamber 1, a heating assembly 3, a piston plate 4, a cleaning assembly 7, a position adjustment assembly 5, and a limiting assembly 6. The quenching chamber 1 has two partition plates 2 arranged vertically, one above the other, with a door at the front for the ring forging to enter and exit. The internal space is divided from top to bottom by the partition plates 2 into a heating chamber 102, an inlet / outlet chamber 101, and a cooling chamber 103. The cooling chamber 103 is filled with coolant. The inlet / outlet chamber 101 is positioned opposite the door. The heating assembly 3 is located in the heating chamber 102 and achieves simultaneous heating of the outer and inner rings of the ring forging by setting a heating structure that matches the dimensions of the inner and outer rings. The piston plate 4 is located below the coolant in the cooling chamber 103. By moving up and down, it moves the coolant in and out of the cooling chamber 103 and submerges the ring forging with coolant. The cleaning assembly 7 is located behind the inlet / outlet chamber 101 and engages with the outer ring and one end of the ring forging. The position adjustment assembly 5 is located between the cleaning assembly 7 and the door. The limiting component 6 is set on the position adjusting component 5. It supports and limits the ring forging by cooperating with the inner ring and the other end of the ring forging. At the same time, the position adjusting component 5 drives the ring forging to move back and forth and flip over to realize material feeding, discharging and cleaning. On the other hand, the position adjusting component 5 drives the ring forging to move up and down and flip over. The limiting component 6 extends into the upper and lower isolation ports respectively, causing the ring forging to enter the heating chamber 102 and the cooling chamber 103, and complete heating and cooling in a sealed environment.

[0031] like Figures 4-6 As shown, the position adjustment component 5 includes a lifting platform 503 that moves up and down between two sets of isolation plates 2, driven by a first drive structure; a mounting rod 504 that moves back and forth between the box door and the cleaning component 7, driven by a second drive structure, is provided on the lifting platform 503; a mounting seat 505 is provided on the mounting rod 504; the mounting seat 505 is driven by a third drive structure to rotate to be opposite to the box door, the upper isolation port, the cleaning component 7 and the lower isolation port; and a limiting component 6 is provided on the mounting seat 505.

[0032] It should be further explained that the drive structure includes a motor; the motor drives the lead screw 502 to rotate between the two sets of isolation plates 2. The lifting platform 503 moves up and down by means of a threaded connection to the lead screw 502.

[0033] It should be further explained that there are four sets of lead screws 502, located on both sides of the two sets of lifting platforms 503.

[0034] It should be further explained that the second drive structure includes a second motor; the second motor drives the second lead screw 501 to rotate on the lifting platform 503; the mounting rod 504 moves back and forth by connecting the second lead screw 501 through a threaded connection.

[0035] It should be further explained that there are two sets of lifting platforms 503, located on both sides of the mounting base 505, and mounting groove one is provided on the opposite ends of the two sets of lifting platforms 503; the second lead screw 501 is rotatably installed in the mounting groove one.

[0036] It should be further explained that the drive structure three is set as motor three located on the mounting base 505; one end of the rod of the mounting rod 504 is connected to the main shaft of motor three, and the other end is connected to the threaded connecting screw two 501.

[0037] It should be further noted that the rod body of mounting rod 504 is designed with an S-shaped structure.

[0038] Through the cooperation of drive structure one, drive structure two and drive structure three, the limiting component 6 can move back and forth, up and down and flip, thereby switching its position to be opposite to the box door, upper isolation port, cleaning component 7 and lower isolation port, thus realizing continuous and efficient quenching.

[0039] like Figures 4-5 As shown, the limiting component 6 is located at the center of the mounting base 505; a sealing ring groove 506 is provided around the outer periphery of the mounting base 505; sealing rings 507 are provided on both the inner and outer ring edges of the sealing ring groove 506, and an annular filter screen is provided on the groove opening; negative pressure is formed in the groove by the air pump 508; the size of the sealing ring groove 506 is larger than the isolation opening; the size of the limiting component 6 is smaller than the isolation opening; a sealing door 201 is provided on the isolation opening.

[0040] When the limiting component 6 extends into the heating chamber 102 and the cooling chamber 103, the mounting base 505 adheres to the isolation plate 2 to form a seal. The mounting base 505 adopts a special design, in which the S-shaped mounting rod 504 can extend the heat conduction path, and the motor maintains a safe distance from the high-temperature zone. Unlike traditional equipment transmission components that require an additional cooling system, this invention also achieves natural heat dissipation through structural optimization.

[0041] To improve sealing, this invention employs a dynamic airtight sealing system. A negative pressure environment is created through the sealing ring groove 506 and the vacuum pump 508. A double sealing ring design (one set on the inner and one on the outer ring edge) forms multiple sealing barriers, while an annular filter prevents particulate matter from damaging the sealing interface. Heating the ring forging under this sealed environment minimizes heat loss. Cooling the ring forging under the sealed environment also minimizes moisture loss. This ensures that heating and cooling are independent, reducing interference. Furthermore, during cleaning, the negative pressure in the sealing ring groove 506 adsorbs rust and dust, preventing secondary contamination. Figures 5-7 As shown, the limiting assembly 6 includes a limiting platform 601 rotatably mounted on the mounting base 505; a limiting member 602 is provided on the limiting platform 601. The limiting member 602 includes a limiting frame 60201 slidably mounted on the limiting platform 601 by a driving structure four; one end of the limiting frame 60201 is rotatably mounted on a limiting frame 60204 by a driving structure five; during operation, the limiting frame 60201 and the limiting frame 60204 form an L-shaped structure.

[0042] It should be further explained that the mounting base 505 is equipped with a motor 4 that drives the limit stage 601 to rotate, so that the limit stage 601 drives the ring forging to rotate synchronously, in order to ensure uniform heating and cooling.

[0043] It should be further explained that the drive structure four includes motor five, which drives lead screw three 60202 to rotate; lead screw three 60202 is connected to limit frame one 60201 by a thread, causing it to slide on limit platform 601.

[0044] It should be further explained that the limiting platform 601 is provided with radial mounting groove 2; the lead screw 3 60202 is rotatably mounted on the mounting groove 2.

[0045] It should be further explained that the drive structure five includes a motor six 60203 located at the end of the limit frame one 60201; the limit frame two 60204 is driven to rotate by the motor six 60203.

[0046] Through the cooperation of drive structure four and drive structure five, limit frame one 60201 moves and limit frame two 60204 rotates, forming multiple sets of L-shaped structures to limit a pair of ring forgings.

[0047] like Figures 8-9As shown, the cleaning assembly 7 includes a mounting platform 701 located on the rear wall of the inlet / outlet cavity 101; a cleaning disc 703 is rotatably mounted on the mounting platform 701; and a ring of cleaning components 702 is mounted on the cleaning disc 703. The cleaning component 702 includes a first cleaning frame 70201 slidably mounted on the cleaning disc 703 by a driving structure six; one end of the first cleaning frame 70201 is rotatably mounted on a second cleaning frame 70204 by a driving structure seven; during operation, the first cleaning frame 70201 and the second cleaning frame 70204 form an L-shaped structure.

[0048] It should be further explained that the mounting platform 701 is equipped with a motor 5 that drives the cleaning disc 703 to rotate, so that the cleaning disc 703 drives the cleaning component 702 to rotate synchronously, and uses mechanical scraping to evenly remove the attached substances on the ring forging.

[0049] It should be further explained that the drive structure five includes motor seven, which drives lead screw four 70202 to rotate; lead screw four 70202 is connected to cleaning frame one 70201 by a thread, causing it to slide on cleaning disc 703.

[0050] It should be further explained that the cleaning disc 703 is provided with radial mounting groove three; the lead screw four 70202 is rotatably mounted on mounting groove three.

[0051] It should be further explained that the drive structure six includes a motor seven 70203 located at the end of the cleaning rack one 70201; the cleaning rack two 70204 is driven to rotate by the motor seven 70203.

[0052] Through the cooperation of drive structure six and drive structure seven, cleaning frame one 70201 moves and cleaning frame two 70204 rotates, forming multiple sets of L-shaped structures for cleaning ring forgings.

[0053] like Figure 7 and Figure 9 As shown, when the limiting platform 601 and the mounting platform 701 are in opposite positions, the L-shaped structure acts on the inner ring wall and bottom of the ring forgings; the L-shaped structure acts on the outer ring wall and top of the ring forgings; the action modes include limiting and cleaning.

[0054] During feeding, the ring forging rests against the first limiting frame 60201, and is rotated by the second limiting frame 60204 to fit against the inner ring wall of the ring forging, forming an L-shaped structure that limits the ring forging in mid-air. When the ring forging flips to the position where the limiting platform 601 and the mounting platform 701 are opposite each other, the cleaning component 702 rotates with the cleaning disc 703. The first cleaning frame 70201 scrapes and cleans the top of the ring forging, and the second cleaning frame 70204 scrapes and cleans the outer ring wall of the ring forging. Then, the L-shaped structure clamps and limits the ring forging from the outer periphery. The limiting component 602 rotates with the limiting platform 601, the first limiting frame 60201 scrapes and cleans the bottom of the ring forging, and the second limiting frame 60204 scrapes and cleans the inner ring wall of the ring forging. After cleaning, the limiting component 602 restores its limiting effect on the ring forging, so that it can enter the subsequent heating and cooling processes.

[0055] It should be further explained that the cleaning in this invention has multiple functions: it can remove the original oxide scale (which is different in nature from the newly formed oxide scale after quenching), remove processing residues (which affect the uniformity of quenching), and the negative pressure adsorption system (sealing ring groove 506) can also prevent secondary pollution.

[0056] like Figure 10 As shown, the heating structure of the heating component 3 includes a heat-insulating cylinder 301 located in the heating chamber 102 and connected to the isolation port at its lower end; the heat-insulating cylinder 301 is provided with an outer ring heating frame 303 that moves up and down and an inner ring heating head 304 located in the outer ring heating frame 303; an annular heating space is left between the inner ring heating head 304 and the outer ring heating frame 303 for the ring forging to enter.

[0057] It should be further noted that the insulation cylinder 301 has an annular cavity structure, and the difference between its inner and outer diameters is 1.1-1.3 times the wall thickness of the ring forging, to ensure heating uniformity. The outer circumference of the insulation cylinder 301 is filled with insulation liquid, and an electrically controlled slide rail 302 is installed on the inner wall of the insulation cylinder 301.

[0058] It should be further explained that the outer ring heating frame 303 is ring-shaped and is driven to rise and fall by the electric control slide rail 302. A ring of heating rods is set inside the ring, and a connecting rod 305 is set at the top of the ring; the other end of the connecting rod 305 is connected to the inner ring heating head 304.

[0059] It should be further explained that a second heating rod is provided on the outer periphery of the inner ring heating head 304.

[0060] When the ring forging enters the heating space, the rotation of the ring forging and the raising and lowering of the heating space cause the outer ring heating frame 303 and the inner ring heating head 304 to heat up simultaneously, ensuring uniform heating throughout the ring forging. Since the bottom of the ring forging is suspended, it also receives uniform heating.

[0061] like Figure 11As shown, a positioning frame 104 is provided at the bottom of the piston plate 4; a pressure regulating platform 10 is provided below the positioning frame 104; the pressure regulating platform 10 is connected to the air pump 8 through a pipeline; and a cooling filter box 9 for refrigerant to enter and exit is provided outside the quenching box 1.

[0062] The air pump 8 drives the pressure regulating platform 10 to draw in and release air. The piston plate 4 rises and falls synchronously with the change of air pressure below, driving the refrigerant from the cooling filter box 9 into the cooling chamber 103. By controlling the liquid level, the ring forging is always immersed in the refrigerant.

[0063] like Figure 12 As shown, the cooling filter box 9 includes a box body 901; a filter screen 902 is installed inside the box body 901 and is divided into two spaces, one above the other; the inlet end of the liquid inlet pipe 903 is controlled by an inlet valve to allow liquid to flow in one direction, and the outlet end extends into the space below the filter screen 902; the outlet end of the liquid outlet pipe 904 is controlled by an outlet valve to allow liquid to flow out one direction, and the inlet end extends into the space above the filter screen 902.

[0064] It should be further noted that both the inlet valve and the outlet valve are pressure check valves.

[0065] When the piston plate 4 moves downward, the inlet pipe 903 introduces the refrigerant, which has passed through the filter screen 902, into the cooling chamber 103. During the cooling process, the refrigerant absorbs heat and rises in temperature, even generating high-temperature vapor. At this point, the piston plate 4 moves upward, forcing the vapor and high-temperature refrigerant into the inlet pipe 903. After filtration and mixing cooling, the refrigerant is reintroduced into the cooling chamber 103. Through repeated cooling, the quenching effect is ensured.

[0066] Example 2: This example proposes a quenching method for ring forgings, using the ring forging quenching apparatus described in Example 1. The steps are as follows:

[0067] S1. The staff puts the ring forging into the box door. The ring forging is pressed against the limiting frame 60201 and rotated by the limiting frame 60204 to fit the inner ring wall of the ring forging, forming an L-shaped structure to limit the ring forging.

[0068] S2. Next, the mounting base 505 moves the ring forging backward and flips it to face the cleaning component 7; the cleaning component 702 rotates with the cleaning disc 703, the first cleaning frame 70201 scrapes and cleans the top of the ring forging, and the second cleaning frame 70204 scrapes and cleans the outer ring wall of the ring forging; the L-shaped structure 2 clamps and limits the ring forging from the outer periphery; the limiting component 602 rotates with the limiting platform 601, the first limiting frame 60201 scrapes and cleans the bottom of the ring forging, and the second limiting frame 60204 scrapes and cleans the inner ring wall of the ring forging; the sealing ring groove 506 adsorbs the rust and dust cleaned by negative pressure; the limiting component 602 restores the limiting effect on the ring forging;

[0069] S3. Mounting base 505 drives the ring forging to flip and move upward to extend into the upper isolation port, and the ring forging enters the heating chamber 102; mounting base 505 fits against the isolation plate 2 to form a seal, and the ring forging enters the heating space. Through the rotation of the ring forging and the rise and fall of the heating space, the outer ring heating frame 303 and the inner ring heating head 304 heat up synchronously, so that the ring forging is evenly heated inside and out.

[0070] S4. After heating to the set time and set temperature, hold the temperature until austenitization is complete;

[0071] S5, Mounting base 505 drives the ring forging to flip and move down to extend into the lower isolation port, and the ring forging enters the cooling chamber 103; Piston plate 4 moves down, and liquid inlet pipe 903 introduces refrigerant through filter screen 902 into cooling chamber 103; Piston plate 4 moves up, on the one hand adjusting the liquid level so that the ring forging is always immersed in refrigerant, and on the other hand forcing steam and high-temperature refrigerant into liquid inlet pipe 903; After filtration and mixed cooling, refrigerant is introduced into cooling chamber 103 again, and through repeated cooling, the quenching effect is ensured;

[0072] S6. If necessary, tempering treatment is performed. Finally, the ring forging is moved and flipped to the box door by the position adjustment component 5. After cooling to room temperature, the staff takes out the ring forging.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A quenching device for ring forgings, characterized in that, include: Quenching box (1), with isolation plates (2) with isolation openings set one above the other inside the quenching box (1), and a box door set in front. The internal space is divided into a heating chamber (102), an inlet / outlet chamber (101) and a cooling chamber (103) from top to bottom by the isolation plates (2); the cooling chamber (103) is filled with coolant; the inlet / outlet chamber (101) is opposite to the box door. Heating assembly (3) is installed in heating chamber (102) to simultaneously heat the outer ring and inner ring of the ring forging; Piston plate (4) is located below the coolant in the cooling chamber (103). By moving up and down, it drives the coolant in and out of the cooling chamber (103) and also drives the coolant to immerse the ring forging. Cleaning component (7) is located behind the inlet / outlet cavity (101); Position adjustment component (5), which is located between cleaning component (7) and door; And a limiting component (6), which is set on the position adjustment component (5) to limit the ring forging in the air. At the same time, the position adjustment component (5) drives the ring forging to move back and forth and flip over to realize material feeding, discharging and cleaning. On the other hand, the position adjustment component (5) drives the ring forging to move up and down and flip over. The limiting component (6) extends into the upper and lower isolation ports respectively, causing the ring forging to enter the heating chamber (102) and cooling chamber (103) and complete heating and cooling in a sealed environment. The position adjustment assembly (5) includes a lifting platform (503) that moves up and down between two sets of isolation plates (2); the lifting platform (503) is provided with a mounting rod (504) that moves back and forth between the box door and the cleaning assembly (7); the mounting rod (504) is provided with a mounting seat (505); the mounting seat (505) can be rotated to be opposite to the box door, the upper isolation port, the cleaning assembly (7) and the lower isolation port; the limiting assembly (6) is provided on the mounting seat (505); The limiting component (6) is located at the center of the mounting base (505); a sealing ring groove (506) is provided around the outer periphery of the mounting base (505); sealing rings (507) are provided on both the inner and outer ring edges of the sealing ring groove (506), and a ring-shaped filter screen is provided on the groove opening. A negative pressure is formed in the groove by a vacuum pump (508); the size of the sealing ring groove (506) is larger than the isolation port; the size of the limiting component (6) is smaller than the isolation port; a sealing door (201) is provided on the isolation port. The limiting component (6) includes a limiting platform (601) rotatably mounted on the mounting base (505); a limiting member (602) is provided on the limiting platform (601); the limiting member (602) includes a limiting frame one (60201) slidably mounted on the limiting platform (601); a limiting frame two (60204) is rotatably mounted on one end of the limiting frame one (60201); during operation, the limiting frame one (60201) and the limiting frame two (60204) form an L-shaped structure. The cleaning assembly (7) includes a mounting platform (701) located on the rear wall of the inlet / outlet cavity (101); a cleaning disc (703) is rotatably mounted on the mounting platform (701); a ring of cleaning components (702) is mounted on the cleaning disc (703); the cleaning component (702) includes a first cleaning rack (70201) slidably mounted on the cleaning disc (703); a second cleaning rack (70204) is rotatably mounted on one end of the first cleaning rack (70201); during operation, the first cleaning rack (70201) and the second cleaning rack (70204) form an L-shaped structure. When the limiting platform (601) and the mounting platform (701) are in opposite positions, the L-shaped structure acts on the inner ring wall and bottom of the ring forging; the L-shaped structure acts on the outer ring wall and top of the ring forging; the action modes include limiting and cleaning.

2. The ring forging quenching device according to claim 1, characterized in that, The heating assembly (3) includes a heat-insulating cylinder (301) located in the heating chamber (102) and connected to the isolation port at its lower end; the heat-insulating cylinder (301) is provided with an outer ring heating frame (303) that moves up and down and an inner ring heating head (304) located in the outer ring heating frame (303); An annular heating space is provided between the inner ring heating head (304) and the outer ring heating frame (303) for the ring forging to enter.

3. The ring forging quenching device according to claim 1, characterized in that, A positioning frame (104) is provided at the bottom of the piston plate (4); a pressure regulating platform (10) is provided below the positioning frame (104); the pressure regulating platform (10) is connected to the air pump (8) through a pipeline. The quenching box (1) is equipped with a cooling filter box (9) for refrigerant to enter and exit.

4. The ring forging quenching device according to claim 3, characterized in that, The cooling filter box (9) includes a box body (901); a filter screen (902) is installed inside the box body (901) and is divided into two spaces, one above the other, by the filter screen (902); the inlet end of the liquid inlet pipe (903) is for unidirectional liquid inlet and the outlet end extends into the space below the filter screen (902); the outlet end of the liquid outlet pipe (904) is for unidirectional liquid outlet and the inlet end extends into the space above the filter screen (902).

5. A quenching method for ring forgings, characterized in that, The ring forging quenching device according to claim 1 is used in the following steps: The operator puts the ring forging into the box door and uses the limiting component (6) to limit the ring forging; then the ring forging is moved backward and flipped to the cleaning component (7) by the position adjusting component (5) and cleaned by it; then the ring forging is flipped and moved upward by the position adjusting component (5) to the upper isolation port, the ring forging enters the heating chamber (102) and is heated by the heating component (3) in a sealed environment and kept warm until austenitization is completed; then the ring forging is flipped and moved downward by the position adjusting component (5) to the lower isolation port, the ring forging enters the cooling chamber (103) and is cooled by immersion in refrigerant in a sealed environment; tempering treatment is performed if necessary, and finally the ring forging is moved and flipped to the box door by the position adjusting component (5); the operator takes out the ring forging.

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