A heat treatment system for high-strength anti-tension steel wire rope production
By using a combination of ceramic atmosphere plates and electromagnetic heating in the heat treatment system, along with a pneumatic control cylinder and normally closed disc structure, the problem of high exhaust gas temperature during wire rope heating was solved, resulting in a reduction in exhaust gas temperature and an improvement in the workshop environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU SHENWANG GRP STEEL CABLE CO LTD
- Filing Date
- 2026-04-23
- Publication Date
- 2026-05-29
AI Technical Summary
In existing heat treatment systems, the exhaust gas temperature is high during the heating process of steel wire ropes, which leads to accelerated aging of the exhaust gas system and a harsh workshop environment.
The steel wire rope is heated by using a ceramic atmosphere plate and rope cavity structure, combined with the electromagnetic heating principle. Intermittent pulse pressurization is achieved through structures such as a pneumatic control cylinder and a normally closed disc to reduce the temperature of the exhaust gas.
It effectively reduced the temperature of the exhaust gas, extended the lifespan of the exhaust gas discharge system, and reduced the impact on the workshop environment.
Smart Images
Figure CN122105097A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of heat treatment technology, specifically to a heat treatment system for the production of high-strength tensile steel wire rope. Background Technology
[0002] In the production process of steel wire rope, the heat treatment stage is the core of the finished product's strength, toughness, fatigue resistance, service life, and safety performance. Its core objective is to achieve a uniform and fine sorbitic microstructure in the raw materials of the steel wire rope through precise heat treatment processes. Currently, austenitizing heating of steel wire rope in heat treatment systems commonly uses a tubular muffle furnace. Its core component is a tubular muffle structure made of heat-resistant alloy, which separates the flame from the flue gas. Heat is radiated and conducted to the steel wire rope inside the tubular muffle structure. Protective gas is filled within the tubular muffle structure. In actual use, because the entire tubular muffle structure is at a high temperature, radiating heat to the steel wire rope, the protective gas inside comes into large contact with the high temperature of the tubular muffle structure. This results in high exhaust gas temperatures, which not only accelerates the aging of the downstream exhaust gas system but also worsens the workshop environment. Summary of the Invention
[0003] The purpose of this invention is to provide a heat treatment system for the production of high-strength tensile steel wire rope, so as to solve the problem of high exhaust gas temperature during the heating process of steel wire rope mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a heat treatment system for producing high-strength tensile steel wire rope, comprising a pretreatment unit, an austenitizing heating unit, a quenching unit, and a surface treatment unit. The pretreatment unit straightens and cleans the steel wire rope. The austenitizing heating unit heats the steel wire rope until it completely transforms into an austenitic structure. After heating, the steel wire rope is quenched by the quenching unit to complete the transformation from austenite to sorbite. Finally, the surface treatment unit pickles and phosphates the steel wire rope. The austenitizing heating unit includes a heating chamber, an electromagnetic heating substrate fixedly disposed inside the heating chamber, and a ceramic atmosphere plate installed above the electromagnetic heating substrate. The ceramic atmosphere plate has rope cavities, which are arranged in several groups and uniformly distributed in a linear array. The inside of the rope cavities is filled with a protective gas. The steel wire rope passes through the rope cavities and is heated in the rope cavities by the electromagnetic heating substrate.
[0005] The quenching unit is a lead bath quenching process, in which an austenitized steel wire rope is heated and then introduced into a molten pure lead bath for isothermal quenching.
[0006] The quenching unit is a water bath quenching process, in which an austenitized steel wire rope is heated and then immersed in an aqueous solution of a polymer to complete isothermal quenching.
[0007] The austenitizing heating unit also includes a pneumatic control cylinder and a drive cylinder. A constant pressure air inlet pipe is connected to the surface of the pneumatic control cylinder. The constant pressure air inlet pipe delivers protective gas into the rope cavity through the pneumatic control cylinder. A normally closed disc is provided inside the pneumatic control cylinder. A central flow-limiting hole is opened through the surface of the normally closed disc. The drive cylinder controls the axial movement of the normally closed disc. When the normally closed disc contacts and closes with the inner end of the pneumatic control cylinder, the protective gas in the pneumatic control cylinder enters the rope cavity through the central flow-limiting hole. When the normally closed disc separates from the inner end of the pneumatic control cylinder, the protective gas in the pneumatic control cylinder directly enters the rope cavity to form a pulse pressurization.
[0008] The pneumatic control cylinder is equipped with acceleration action components inside and outside. When the drive cylinder controls the normally closed disc through the acceleration action components, it can increase the separation speed between the normally closed disc and the inner end of the pneumatic control cylinder.
[0009] The acceleration mechanism includes a support portion fixedly mounted on the normally closed disc and a disc shaft fixedly mounted on the support portion. The disc shaft passes through the end of the pneumatic control cylinder and extends to the outside of the pneumatic control cylinder, with a sealed contact between the disc shaft and the pneumatic control cylinder. A return spring is sleeved on the outside of the disc shaft, and the return spring applies pressure to the normally closed disc, causing the normally closed disc to tend to move towards the inner end of the pneumatic control cylinder. A connecting arm is provided on the outside of the pneumatic control cylinder, and the connecting arm is fixedly mounted on the disc shaft. An impact panel is fixedly mounted on the connecting arm, and a passage groove is opened at the lower part of the impact panel.
[0010] A fixed side plate is fixedly installed on the outside of the pneumatic control cylinder. The fixed side plate is fixedly installed with the heating box. An acceleration hammer is slidably limited on the fixed side plate. The sliding direction of the acceleration hammer is parallel to the axis of the pneumatic control cylinder. A spring plate is fixedly installed on the fixed side plate. A spring spindle is fixedly installed on the spring plate. A hammer spring is sleeved on the outside of the spring spindle. One end of the hammer spring is fixed to the spring plate and the other end is fixed to the acceleration hammer. A pushing assembly is provided at the end of the drive cylinder. A dynamic locking plate is provided on the pushing assembly. After the dynamic locking plate moves up, it can cooperate with the acceleration hammer for limiting. The pushing assembly can control the dynamic locking plate to move down in the initial stage of the drive cylinder's extension movement and control the dynamic locking plate to move up in the initial stage of the drive cylinder's retraction movement.
[0011] The pushing component includes an I-shaped slider that is slidably disposed in a fixed side plate. The driving cylinder drives the I-shaped slider by extending and retracting. A vertical groove is provided through the I-shaped slider. A limit plug is provided in the vertical groove. The upper end of the limit plug is fixedly installed with a dynamic locking plate. The limit plug is provided with short-pitch teeth.
[0012] A shaft-shaped gear is rotatably mounted in the I-shaped slider. Side gears are fixedly mounted at both ends of the shaft-shaped gear. The side gears mesh with short-pitch teeth. A vertical protrusion is fixedly mounted on the dynamic locking plate. A bidirectional force-applying spring is mounted below the vertical protrusion. When the bidirectional force-applying spring is neither compressed nor extended, the side gears mesh with the middle position of the short-pitch teeth. A base plate bracket is fixedly mounted at the bottom of the fixed side plate. A fixed rack is fixedly mounted on the base plate bracket. The fixed rack contacts and meshes with the shaft-shaped gear.
[0013] A cavity top opening is provided at the top center of the rope cavity, and a transverse gas hood is provided on the upper part of the ceramic atmosphere plate. The transverse gas hood is connected to the rope cavity through the cavity top opening. An insertable air pipe is provided at the end of the transverse gas hood, and the air control cylinder is connected to the insertable air pipe.
[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention relates to a heat treatment system for heat-treating steel wire ropes to improve their strength and tensile strength. The austenitizing heating unit, through the combination of a ceramic atmosphere plate and a rope cavity, utilizes electromagnetic induction heating principles to directly heat the steel wire rope within the rope cavity via the ceramic atmosphere plate. In this system, the ceramic atmosphere plate does not actively generate heat; only the steel wire rope undergoes small-area contact heating with the protective gas. This results in lower exhaust temperatures for the protective gas, extending the lifespan of the exhaust system and minimizing its impact on the workshop environment.
[0015] The austenitizing heating unit of this invention, through the combination of a gas control cylinder, normally closed disc and central flow limiting hole, can perform intermittent pulse pressurization during the continuous introduction of protective gas. By instantly increasing the airflow speed, a purging effect is formed, which removes dead zone air and reduces the local oxygen content.
[0016] This invention, through the design of an acceleration mechanism, can increase the opening speed of the normally closed disc even when the extension and retraction speed of the drive cylinder is limited. This allows the normally closed disc to open instantly, causing a sudden surge in pressure within the pipeline, creating a hammer effect, and enhancing the pulse effect. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of an austenitizing heating unit.
[0018] Figure 2 This is a schematic diagram of the austenitizing heating unit from another angle.
[0019] Figure 3 This is a three-dimensional half-section schematic diagram of the austenitizing heating unit.
[0020] Figure 4This is a three-dimensional half-section diagram showing the cross-sectional angle of the austenitizing heating unit.
[0021] Figure 5 This is a partial three-dimensional half-section schematic diagram of the cross-sectional angle of the austenitizing heating unit.
[0022] Figure 6 This is a schematic diagram of the structure of the austenitizing heating unit's pneumatic control cylinder.
[0023] Figure 7 This is a schematic diagram of the bottom structure of the gas control cylinder of the austenitizing heating unit.
[0024] Figure 8 This is a three-dimensional half-section diagram showing the cross-sectional angle of the gas control cylinder of the austenitizing heating unit.
[0025] Figure 9 This is a three-dimensional half-section diagram of the gas control cylinder of the austenitizing heating unit.
[0026] Figure 10 This is a partial three-dimensional cross-sectional view of the pneumatic control cylinder of the austenitizing heating unit.
[0027] Figure 11 This is a schematic diagram of an I-beam slider for an austenitizing heating unit.
[0028] In the diagram: 1. Heating box; 2. Electromagnetic heating base plate; 3. Ceramic atmosphere plate; 4. Rope cavity; 5. Pneumatic control cylinder; 6. Constant pressure air inlet pipe; 7. Normally closed disc; 8. Central flow limiting orifice; 9. Drive cylinder; 401. Cavity top dividing hole; 402. Transverse air hood; 403. Inserted air pipe; 801. Support section; 802. Disc shaft; 803. Return spring; 804. Connecting arm; 805. Impact panel; 806. Fixed side plate; 807. Through slot; 808. Accelerating hammer block; 8 09. Spring plate; 810. Spring spindle; 811. Hammer spring; 901. I-beam slider; 902. Vertical slide groove; 903. Limiting plug; 904. Dynamic locking plate; 905. Short-pitch tooth; 906. Shaft gear; 907. Side gear; 908. Vertical protrusion; 909. Bidirectional force-applying spring; 910. Fixed rack; 911. Base plate bracket; 101. Box frame leg; 102. Top cover; 103. Negative pressure return suction pipe; 104. Steel wire conveyor roller. Detailed Implementation
[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0030] Please see Figures 1 to 11 The present invention provides a technical solution: a heat treatment system for producing high-strength tensile steel wire rope, comprising a pretreatment unit, an austenitizing heating unit, a quenching unit, and a surface treatment unit.
[0031] The pretreatment unit consists of equipment such as a straightening machine and a wire brush device, and is responsible for straightening and cleaning the wire rope.
[0032] The austenitizing heating unit heats the steel wire rope until it completely transforms into an austenitic structure. After heating, the wire rope undergoes quenching treatment in the quenching unit to complete the transformation from austenite to sorbite. Figure 4 and Figure 5 As shown, the austenitizing heating unit includes a heating box 1, an electromagnetic heating substrate 2 fixedly installed inside the heating box 1, and a ceramic atmosphere plate 3 installed above the electromagnetic heating substrate 2. The ceramic atmosphere plate 3 is made of ceramic and does not affect electromagnetic induction heating. A rope cavity 4 is opened in the ceramic atmosphere plate 3. The cross-section of the rope cavity 4 can be rectangular or circular. Several groups of rope cavities 4 are arranged and are evenly distributed in a linear array. The inside of the rope cavity 4 is filled with protective gas. The steel wire rope passes through the rope cavity 4 and is heated in the rope cavity 4 by the electromagnetic heating substrate 2.
[0033] The quenching unit can employ either lead bath quenching or water bath quenching. Lead bath quenching involves heating an austenitized steel wire rope and immersing it in a bath of molten pure lead for isothermal quenching. Water bath quenching involves heating an austenitized steel wire rope and immersing it in an aqueous solution of a polymer, such as PAG quenching fluid, to achieve isothermal quenching.
[0034] The surface treatment unit pickles and phosphates the steel wire rope. The surface treatment unit includes a hydrochloric acid pickling tank, a multi-stage water washing tank, a phosphating tank, and a phosphating water washing tank. The surface oxide scale is removed by the hydrochloric acid pickling tank, the residual hydrochloric acid is removed by the multi-stage water washing tank, and the wire rope enters the phosphating tank to form a uniform and dense phosphating film on the surface of the steel wire. The wire rope is then rinsed again by the phosphating water washing tank to remove the residual phosphating solution.
[0035] The austenitizing heating unit also includes a pneumatic control cylinder 5 and a drive cylinder 9. The pneumatic control cylinder 5 is a cylindrical short tubular structure. The drive cylinder 9 can be a pneumatic cylinder or a hydraulic cylinder in the prior art, which can realize the extension and retraction drive. A constant pressure air inlet pipe 6 is connected to the surface of the pneumatic control cylinder 5. A flange is provided at the end of the constant pressure air inlet pipe 6, which is connected to an external constant pressure protective air source through the flange. The constant pressure air inlet pipe 6 delivers protective gas to the rope cavity 4 through the pneumatic control cylinder 5.
[0036] like Figure 9As shown, the pneumatic control cylinder 5 has a normally closed disc 7 inside. The normally closed disc 7 is in contact with the left end of the pneumatic control cylinder 5 and is in a normally closed state. A central flow-limiting hole 8 is opened through the surface of the normally closed disc 7. The central flow-limiting hole 8 limits the airflow and maintains the positive pressure environment in the rope cavity 4. The normally closed disc 7 is axially moved by the drive cylinder 9. When the normally closed disc 7 is in contact with the inner end of the pneumatic control cylinder 5 and closed, the protective gas in the pneumatic control cylinder 5 enters the rope cavity 4 through the central flow-limiting hole 8. When the normally closed disc 7 is separated from the inner end of the pneumatic control cylinder 5, the protective gas in the pneumatic control cylinder 5 directly enters the rope cavity 4 to form pulse pressure.
[0037] like Figure 1 and Figure 3 As shown, wire conveying rollers 104 are installed at both ends of the heating box 1. The wire conveying rollers 104 tension and support the wire rope and drive it to pass through the inside of the rope cavity 4 in parallel under the tension and support of the wire conveying rollers 104.
[0038] The electromagnetic heating substrate 2 requires sufficient heat dissipation. Heat dissipation fans can be arrayed in the area below the electromagnetic heating substrate 2 inside the heating box 1. This invention is not shown in the accompanying drawings.
[0039] like Figure 1 As shown, a frame leg 101 is welded and installed at the bottom of the heating box 1. The frame leg 101 supports the heating box 1 by raising it. An openable upper cover 102 is provided on the upper part of the heating box 1. A negative pressure back suction pipe 103 is connected to the upper cover 102. The negative pressure back suction pipe 103 is connected to a negative pressure fan. The exhaust gas generated in the heating box 1 is discharged through the negative pressure back suction pipe 103.
[0040] The pneumatic control cylinder 5 is equipped with an acceleration mechanism inside and outside. When the drive cylinder 9 controls the normally closed disc 7 through the acceleration mechanism, it can increase the separation speed between the normally closed disc 7 and the inner end of the pneumatic control cylinder 5. The acceleration mechanism includes a bracket 801 fixedly mounted on the normally closed disc 7 and a disc shaft 802 fixedly mounted on the bracket 801. Figure 9 As shown, the bracket portion 801 is configured so that the disc shaft 802 does not affect the normal ventilation of the central flow-limiting orifice 8. The end of the disc shaft 802 that passes through the pneumatic control cylinder 5 extends to the outside of the pneumatic control cylinder 5, and there is a sealed contact between the disc shaft 802 and the pneumatic control cylinder 5. A return spring 803 is sleeved on the outside of the disc shaft 802. The return spring 803 applies pressure to the normally closed disc 7, so that the normally closed disc 7 tends to move towards the inner end of the pneumatic control cylinder 5. A connecting arm 804 is provided on the outside of the pneumatic control cylinder 5. The connecting arm 804 is fixedly installed with the disc shaft 802, and an impact panel 805 is fixedly provided on the connecting arm 804.
[0041] A fixed side plate 806 is fixedly installed on the outside of the pneumatic control cylinder 5. The fixed side plate 806 is fixedly installed with the heating box 1. An acceleration hammer 808 is slidably limited on the fixed side plate 806. The sliding direction of the acceleration hammer 808 is parallel to the axial direction of the pneumatic control cylinder 5. A spring plate 809 is fixedly installed on the fixed side plate 806. A spring spindle 810 is fixedly installed on the spring plate 809. A hammer spring 811 is sleeved on the outside of the spring spindle 810. One end of the hammer spring 811 is fixed to the spring plate 809, and the other end is fixed to the acceleration hammer 808. A pushing component is provided at the end of the drive cylinder 9. A dynamic locking plate 904 is provided on the pushing component. After the dynamic locking plate 904 moves upward, it can cooperate with the acceleration hammer block 808 for limiting. The pushing component can control the dynamic locking plate 904 to move downward in the initial stage of the drive cylinder 9 extending and moving, and control the dynamic locking plate 904 to move upward in the initial stage of the drive cylinder 9 retracting. A through groove 807 is provided at the lower part of the impact panel 805. When the dynamic locking plate 904 moves upward, the dynamic locking plate 904 can avoid interference contact with the impact panel 805 by passing through the through groove 807.
[0042] The pushing component includes an I-shaped slider 901 slidably disposed in the fixed side plate 806. The drive cylinder 9 drives the I-shaped slider 901 by extending and retracting. A vertical slide groove 902 is provided through the I-shaped slider 901. A limit plug 903 is provided in the vertical slide groove 902. The upper end of the limit plug 903 is fixedly installed with the dynamic locking plate 904. A short-pitch tooth 905 is provided on the limit plug 903. The length of the short-pitch tooth 905 should not be too long, just long enough to meet the lifting stroke control of the dynamic locking plate 904.
[0043] A shaft-shaped gear 906 is rotatably mounted in the I-shaped slider 901. Side gears 907 are fixedly mounted at both ends of the shaft-shaped gear 906. The side gears 907 mesh with short-pitch teeth 905. A vertical protrusion 908 is fixedly mounted on the dynamic locking plate 904. A bidirectional force-applying spring 909 is mounted below the vertical protrusion 908. When the bidirectional force-applying spring 909 is neither in a compressed state nor an extended state, the side gears 907 mesh with the short-pitch teeth 905 at the middle position. The purpose of this arrangement is to allow the dynamic locking plate 904 to have a downward tendency after moving upward to its position, and a upward tendency after moving downward to its position, so that the side gears 907 can re-engage with the short-pitch teeth 905 when reversing.
[0044] A base plate bracket 911 is fixedly installed at the bottom of the fixed side plate 806. A fixed rack 910 is fixedly installed on the base plate bracket 911. The fixed rack 910 contacts and meshes with the shaft gear 906. A rectangular through slot is also provided on the base plate bracket 911. Figure 7As shown, when the limit plug 903 moves down, the lower end of the limit plug 903 can be inserted into the rectangular through slot, avoiding positional interference between the limit plug 903 and the base plate bracket 911.
[0045] A cavity top opening 401 is provided at the top center of the rope cavity 4. A transverse air hood 402 is provided on the upper part of the ceramic atmosphere plate 3. The transverse air hood 402 is connected to the rope cavity 4 through the cavity top opening 401. An insertable air pipe 403 is provided at the end of the transverse air hood 402. The air control cylinder 5 is inserted and connected to the insertable air pipe 403.
[0046] In use, the austenitizing heating unit of this invention features a steel wire rope that is smoothly conveyed within the rope cavity 4. The constant pressure air inlet pipe 6 is connected to a transverse pressure protective gas source, and the protective gas enters the gas control cylinder 5. Figure 9 As shown, the air enters the insertion tube 403 through the central flow-limiting hole 8, in conjunction with the reference. Figure 5 As shown, the protective gas is distributed into different rope cavities 4 through the transverse gas hood 402 and the cavity top distribution hole 401, so that the inside of the rope cavity 4 is filled with protective gas. The protective gas is continuously introduced into the rope cavity 4 through the flow restriction of the central flow restriction hole 8, maintaining the positive pressure inside the rope cavity 4, and the exhaust gas is discharged through both ends of the rope cavity 4.
[0047] In this invention, the electromagnetic heating substrate 2 heats the steel wire rope in the rope cavity 4 through the principle of electromagnetic induction. During the heating process, the ceramic atmosphere plate 3 does not generate heat actively; only the steel wire rope causes the exhaust gas to heat up slightly through a small area of contact.
[0048] During the above process, the drive cylinder 9 extends and retracts once at regular intervals. When the drive cylinder 9 extends, as... Figure 9 and Figure 10 As shown, the drive cylinder 9 pushes the I-shaped slider 901 to slide to the right. When the I-shaped slider 901 moves to the right, the shaft gear 906 engages with the fixed rack 910 in a fixed position, causing the shaft gear 906 to rotate clockwise, which in turn drives the side gear 907 to rotate clockwise in sync.
[0049] As the side gear 907 engages with the short-pitch tooth 905, the clockwise rotation of the side gear 907 drives the short-pitch tooth 905, the limiting plug 903, and the dynamic locking plate 904 to move downwards synchronously until the side gear 907 has traveled the full length of the short-pitch tooth 905. Then, the side gear 907 continues to rotate clockwise, while the short-pitch tooth 905, located below the side gear 907, stops moving downwards. At this point, the bidirectional force-applying spring 909 is compressed, applying an upward thrust to the limiting plug 903 and the dynamic locking plate 904.
[0050] In the above process, such as Figure 9As shown, initially, under the blocking effect of the dynamic locking plate 904, the acceleration hammer 808 compresses and stores the hammer spring 811 to the left. When the drive cylinder 9 extends, the dynamic locking plate 904 moves to the right and then downwards. When the dynamic locking plate 904 moves to its lower position and no longer blocks the acceleration hammer 808, the acceleration hammer 808 moves to the right under the force of the hammer spring 811. The acceleration hammer 808 moves to the right and strikes the left side surface of the impact panel 805, pushing the impact panel 805 to move to the right at an accelerated speed.
[0051] It is worth noting that when the hammer spring 811 is in its natural state, that is, neither compressed nor stretched, the acceleration hammer 808 does not contact the impact panel 805. It is only necessary that the acceleration hammer 808 can produce a hammering effect on the impact panel 805 within the distance of its inertial movement when it moves to the right.
[0052] When the impact panel 805 accelerates to the right, as Figure 9 As shown, the connecting arm 804 drives the disc shaft 802 to move to the right, causing the return spring 803 to be elastically compressed, and the normally closed disc 7 accelerates to the right to open. This allows the drive cylinder 9 to overcome the slow extension and retraction speed when controlling the opening of the normally closed disc 7, enabling the disc to open instantly. When the normally closed disc 7 opens instantaneously, the protective gas in the pneumatic cylinder 5 directly enters the connecting air pipe 403, causing a sudden pressure surge in the pipe, creating a hammer effect and enhancing the pulse effect. Under the elastic force of the return spring 803, the normally closed disc 7 automatically closes after opening, thus achieving the effect of one pulse purging.
[0053] When the drive cylinder 9 extends to its position and then retracts, as follows: Figure 10 As shown, when the I-shaped slider 901 moves to the left, the shaft gear 906 and the side gear 907 rotate counterclockwise, driving the dynamic locking plate 904 to extend upward, so that the bidirectional force-applying spring 909 is in a stretched state.
[0054] During the entire process of the I-beam slider 901 resetting to the left, the dynamic locking plate 904 extends upward during the initial displacement phase. Then, the dynamic locking plate 904 remains extended upward, and the I-beam slider 901 and the dynamic locking plate 904 move to the left together. Through position preset, the dynamic locking plate 904 is positioned so that when it extends upward, it locks onto the right surface of the acceleration hammer block 808. This allows the dynamic locking plate 904 to push the acceleration hammer block 808 to the left when the I-beam slider 901 moves to the left, causing the hammer spring 811 to be compressed and stored again, returning to its original position. Figure 9 The initial state shown is for cyclical operation when the drive cylinder 9 extends next time.
[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A heat treatment system for producing high-strength tensile steel wire rope, comprising a pretreatment unit, an austenitizing heating unit, a quenching unit, and a surface treatment unit, characterized in that: The pretreatment unit straightens and cleans the wire rope, and the austenitizing heating unit heats the wire rope to completely transform it into an austenitic structure. After heating, the wire rope is quenched by the quenching unit to complete the transformation of austenite into sorbite. Finally, the wire rope is pickled and phosphated by the surface treatment unit. The austenitizing heating unit includes a heating box, an electromagnetic heating substrate fixedly installed inside the heating box, and a ceramic atmosphere plate installed above the electromagnetic heating substrate. The ceramic atmosphere plate has rope cavities, and there are several groups of rope cavities arranged in a linear array. The inside of the rope cavities is filled with protective gas. The steel wire rope passes through the rope cavities and is heated by the electromagnetic heating substrate in the rope cavities.
2. The heat treatment system for producing high-strength tensile steel wire rope according to claim 1, characterized in that: The quenching unit is a lead bath quenching process, in which an austenitized steel wire rope is heated and then introduced into a molten pure lead bath for isothermal quenching.
3. The heat treatment system for producing high-strength tensile steel wire rope according to claim 1, characterized in that: The quenching unit is a water bath quenching process, in which an austenitized steel wire rope is heated and then immersed in an aqueous solution of a polymer to complete isothermal quenching.
4. The heat treatment system for producing high-strength tensile steel wire rope according to claim 1, characterized in that: The austenitizing heating unit also includes a pneumatic control cylinder and a drive cylinder. A constant pressure air inlet pipe is connected to the surface of the pneumatic control cylinder. The constant pressure air inlet pipe delivers protective gas into the rope cavity through the pneumatic control cylinder. A normally closed disc is provided inside the pneumatic control cylinder. A central flow-limiting hole is opened through the surface of the normally closed disc. The drive cylinder controls the axial movement of the normally closed disc. When the normally closed disc contacts and closes with the inner end of the pneumatic control cylinder, the protective gas in the pneumatic control cylinder enters the rope cavity through the central flow-limiting hole. When the normally closed disc separates from the inner end of the pneumatic control cylinder, the protective gas in the pneumatic control cylinder directly enters the rope cavity to form a pulse pressurization.
5. The heat treatment system for producing high-strength tensile steel wire rope according to claim 4, characterized in that: The pneumatic control cylinder is equipped with acceleration action components inside and outside. When the drive cylinder controls the normally closed disc through the acceleration action components, it can increase the separation speed between the normally closed disc and the inner end of the pneumatic control cylinder.
6. The heat treatment system for producing high-strength tensile steel wire rope according to claim 5, characterized in that: The acceleration action component includes a support portion fixedly mounted on the normally closed disc and a disc shaft fixedly mounted on the support portion. The disc shaft passes through the end of the pneumatic control cylinder and extends to the outside of the pneumatic control cylinder. The disc shaft and the pneumatic control cylinder are in sealed contact. A return spring is sleeved on the outside of the disc shaft. The return spring applies pressure to the normally closed disc, causing the normally closed disc to tend to move toward the inner end of the pneumatic control cylinder. The pneumatic control cylinder is provided with a connecting arm on its exterior. The connecting arm is fixedly installed with the disc shaft. An impact panel is fixedly installed on the connecting arm, and a passage groove is opened at the bottom of the impact panel.
7. The heat treatment system for producing high-strength tensile steel wire rope according to claim 6, characterized in that: A fixed side plate is fixedly installed on the outside of the pneumatic control cylinder. The fixed side plate is fixedly installed with the heating box. An acceleration hammer is slidably limited on the fixed side plate. The sliding direction of the acceleration hammer is parallel to the axial direction of the pneumatic control cylinder. A spring plate is fixedly installed on the fixed side plate. A spring spindle is fixedly installed on the spring plate. A hammer spring is sleeved on the outside of the spring spindle. One end of the hammer spring is fixed to the spring plate and the other end is fixed to the acceleration hammer. A pushing component is provided at the end of the drive cylinder, and a dynamic locking plate is provided on the pushing component. After the dynamic locking plate moves up, it can cooperate with the acceleration hammer block for limiting. The pushing component can control the dynamic locking plate to move down during the initial stage of the drive cylinder's extension movement, and control the dynamic locking plate to move up during the initial stage of the drive cylinder's retraction movement.
8. The heat treatment system for producing high-strength tensile steel wire rope according to claim 7, characterized in that: The pushing component includes an I-shaped slider that is slidably disposed in a fixed side plate, and the driving cylinder drives the I-shaped slider by extending and retracting. A vertical groove is provided through the H-shaped slider, and a limit plug is provided in the vertical groove. The upper end of the limit plug is fixedly installed with the dynamic locking plate, and the limit plug is provided with short-pitch teeth.
9. The heat treatment system for producing high-strength tensile steel wire rope according to claim 8, characterized in that: The I-shaped slider is rotatably equipped with a shaft-shaped gear, and side gears are fixedly installed at both ends of the shaft-shaped gear. The side gears mesh with short-pitch teeth. A vertical protrusion is fixedly installed on the dynamic locking plate, and a bidirectional force-applying spring is installed below the vertical protrusion. When the bidirectional force-applying spring is neither in a compressed state nor in an extended state, the side gears mesh with the middle position of the short-pitch teeth. A base plate bracket is fixedly installed at the bottom of the fixed side plate, and a fixed rack is fixedly installed on the base plate bracket. The fixed rack is in contact with and meshes with the shaft gear.
10. The heat treatment system for producing high-strength tensile steel wire rope according to claim 4, characterized in that: The top of the rope cavity has a cavity top opening at the middle position, and a transverse air hood is provided on the upper part of the ceramic atmosphere plate. The transverse air hood is connected to the rope cavity through the cavity top opening. The end of the transverse air hood is connected to a plug-in air pipe, and the air control cylinder is plugged into and connected to the plug-in air pipe.