Rapid heating equipment for surface of high-temperature alloy bar

Abstract

The utility model provides high-temperature alloy bar surface rapid heating equipment which is characterized in that at least two heating stations are arranged in a heating bin and are used for placing bars to be heated; the heating coil is provided with a heating cavity which corresponds to a to-be-heated bar and is through in the longitudinal direction so as to heat the outer portion of the to-be-heated bar sleeved with the heating cavity. Each heating station is correspondingly provided with a driving mechanism, and the driving mechanisms drive the heating coils in the longitudinal direction so as to integrally heat the to-be-heated bars through longitudinal displacement. A heating coil is designed for the bar, the heating coil is installed on a lead screw stand column and can move up and down, all-directional heating of the upper surface, the lower surface and the side face of the bar can be achieved, the heating requirement of the strip-shaped bar is met, the actual requirement is met, automatic control is conducted through a controller, and therefore accurate and automatic time heating can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bar heating, and in particular relates to a device for rapidly heating the surface of a high-temperature alloy bar. Background Art

[0002] Alloy steel will undergo severe oxidation and decarburization at high temperatures (usually 600-1300°C), resulting in the formation of multiple oxide layers and deep decarburization layers on the steel surface. Oxidation and decarburization not only seriously affect the surface quality, mechanical properties and fatigue life of the steel, but also increase the difficulty of subsequent processing. Especially for large steel parts with a high carbon content, surface oxidation and decarburization will cause greater material loss. At the same time, alloy steel will also experience surface alloy element depletion when subjected to high temperatures for a long time. For example, stainless steel is prone to grain boundary chromium depletion at high temperatures. Based on the above factors, it is economical and efficient to apply a high-temperature protective coating to the surface of the alloy steel before heating in the furnace to prevent oxidation, decarburization and alloy element depletion during heating. (Feng Chi---Development and Performance of High-Temperature Protective Coatings for Alloy Steel).

[0003] When applying high-temperature protective coatings to alloy steel surfaces, heating the steel prior to application makes the coating adhere more easily. The coating thickness can also be adjusted by controlling the surface temperature and applying the coating method. Currently, the market offers high-frequency heating machines and some non-standard equipment for bar heating. However, no suitable heating equipment has been found for automated coating workstations for specialized alloy bars used in aircraft engines and gas turbines.

[0004] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and the utility model provides a high-temperature alloy bar surface rapid heating device.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A high-temperature alloy bar surface rapid heating device, comprising:

[0008] A heating chamber, wherein the heating chamber is provided with at least two heating stations for placing the bars to be heated;

[0009] A heating coil having a heating cavity corresponding to the bar to be heated and extending longitudinally therethrough, so as to heat the exterior of the bar to be heated which is sleeved in the heating cavity;

[0010] A driving mechanism is provided for each heating station, and the driving mechanism drives the heating coil in the longitudinal direction to heat the bar material to be heated as a whole through longitudinal displacement.

[0011] Preferably, the heating coil is arranged in a mounting member, the mounting member has a central hole corresponding to the heating coil, and a heat insulation layer is provided between the heating coil and the mounting member.

[0012] Preferably, the driving mechanism includes:

[0013] A column, wherein a lead screw extending in the longitudinal direction is provided on a side of the column close to the heating station, and the mounting member is assembled with the lead screw through a thread;

[0014] A slide bar, wherein the column is provided with a slide bar corresponding to the mounting piece, and the mounting piece is provided with a slide groove corresponding to the slide bar.

[0015] Preferably, the heating station is provided with a placement rod extending in the longitudinal direction, and a placement plate is provided at the upper end of the placement rod. The outer diameters of the placement plate and the placement rod are both smaller than the inner diameter of the heating chamber.

[0016] Preferably, the upper surface of the placement tray is provided with protrusions.

[0017] Preferably, the side wall of the heating chamber is provided with a door opening corresponding to the heating station, and a left door and a right door are respectively installed on the left and right sides of the door opening through push-pull tracks.

[0018] Preferably, a temperature monitoring module is provided in the heating chamber and is directed toward the bar material along the axial direction of the heating chamber.

[0019] Preferably, the heating coil, driving mechanism and temperature monitoring module are correspondingly connected to the controller.

[0020] Preferably, the controller is connected above the heating chamber via an N-shaped connecting rod, and both ends of the N-shaped connecting rod are hinged to the heating chamber and the controller respectively, so that the controller can be switched in front and on the side of the heating chamber by rotation.

[0021] Beneficial effect: The heating coil is designed for the bar material, and the heating coil is installed on the screw column and can move up and down, which can realize all-round heating of the upper and lower surfaces and sides of the bar material, thereby meeting the heating needs of the strip bar material and meeting actual needs. It is automatically controlled by the controller, so that the time heating can be accurate and automatic. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0023] Figure 1 This is a simplified structural diagram of the heating device in the specific embodiment provided by the utility model;

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0025] In the figure: 1. Left door; 2. Left door cylinder; 3. First workstation; 4. Temperature monitoring module; 5. Second workstation; 6. Right door cylinder; 7. Right door; 8. Controller; 9. Bar; 10. Column; 11. Screw; 12. Mounting part; 13. Placement rod; 14. Placement plate; 15. N-shaped connecting rod; 16. Split machine. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0027] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0029] like Figure 1-2As shown, a high-temperature alloy bar surface rapid heating device includes a heating chamber, a heating coil, and a driving mechanism. There are no less than two heating stations inside the heating chamber for placing the bar 9 to be heated. In this application, taking the setting of two heating stations as an example, the two heating stations are respectively the first station 3 and the second station 5. The heating coils are connected to the power supply accordingly, so as to generate heat by electric heating. The heating coils are wound in a spring shape to form a heating cavity corresponding to the bar 9 to be heated and passing through in the longitudinal direction. The heating coils are sleeved on the outside of the bar 9 to be heated in the heating cavity to meet the heating requirements. The driving mechanism drives the heating coils in the longitudinal direction. For the bar 9 with a longer length, all-round heating is achieved by moving up and down, so that the bar 9 to be heated can be heated as a whole.

[0030] In an optional embodiment, in order to avoid heat overflow, the heating coil is arranged in the mounting member 12. The mounting member 12 is made of heat-resistant material and can be square or other shapes. However, it should have a central hole corresponding to the heating coil for installing the heating coil, and an insulating layer is provided between the heating coil and the mounting member 12 to avoid heat conduction outward and waste.

[0031] In an optional embodiment, the driving mechanism corresponds one-to-one to the heating station, and the driving mechanism includes a column 10 and a slide bar. A lead screw 11 extending longitudinally is provided on the side of the column 10 close to the heating station. Both ends of the lead screw 11 are fixed by bearing seats. The mounting part 12 is assembled with the lead screw 11 through threads. A stepping motor is provided at the upper end of the column 10, so that the rotation control of the lead screw 11 can be realized, thereby realizing the longitudinal position adjustment of the heating coil. A slide bar corresponding to the mounting part 12 is provided on the column 10, and the cross-section of the slide bar is dovetail-shaped. A slide groove corresponding to the slide bar is provided on the mounting part 12, so that the mounting part 12 can slide stably along the longitudinal direction.

[0032] In an optional embodiment, a placement rod 13 extending longitudinally is provided on the heating station. The placement rod 13 is made of heat-resistant material, so that the rod 9 is placed at a certain height, which facilitates the electric heating ring to heat the lower end of the rod 9. A placement plate 14 is provided on the upper end of the placement rod 13. The placement plate 14 is made of heat-resistant material. The outer diameters of the placement plate 14 and the placement rod 13 are both smaller than the inner diameter of the heating chamber. Correspondingly, the outer diameter of the rod 9 to be heated is also smaller than the inner diameter of the heating chamber. The upper and lower surfaces of the rod 9 are flat surfaces, and a protrusion is provided on the upper surface of the placement plate 14. The rod 9 is supported by the protrusion, reducing the contact area with the rod 9, thereby ensuring the heating effect of the rod 9.

[0033] The protrusion may be a frustum, a cone, a short column, or the protrusion may include multiple concentrically distributed support rings, each of which is provided with multiple notches evenly distributed around its circumference to conduct heat to the middle.

[0034] In an optional embodiment, a door opening of a heating station is provided on the side wall of the heating chamber, and the door opening should be no smaller than the positions corresponding to the two stations, so as to facilitate the picking and placing of the robot. In this application, the surface heating equipment of the special alloy bar 9 for aircraft engines and gas turbines can cooperate with the robot to realize the automation of loading, heating and unloading of the bar 9.

[0035] The left door 1 and the right door 7 are installed on the left and right sides of the door opening through push-pull tracks respectively. The left door 1 and the right door 7 are driven by the left door cylinder 2 and the right door 7 cylinder 6 respectively to realize the opening and closing of the door opening. The solenoid valves of the left door cylinder 2 and the right door 7 cylinder 6 are correspondingly connected to the controller 8 or the split machine 16. When the split machine 16 is set up, the door can be opened and closed according to the heating conditions of each workstation. Furthermore, the controller or the split machine 16 is connected to the pick-and-place robot for data through a wireless network, thereby meeting the linkage requirements.

[0036] In this embodiment, the controller 8 is a touch control panel, and a split machine 16 is provided for each workstation. Each split machine 16 receives the detection information of the corresponding temperature monitoring module 4, so that the heating coil and driving mechanism of the corresponding workstation can be independently controlled. The touch control panel is used to adjust the parameters of each split machine 16.

[0037] In an optional embodiment, a temperature monitoring module 4 is provided in the heating chamber and is directed toward the bar 9 along the axial direction of the heating chamber. The temperature monitoring module 4 corresponds one-to-one to the heating station, so that feedback can be provided on the heating effect of the bar 9. The heating coil, the drive mechanism and the temperature monitoring module 4 are correspondingly connected to the controller 8. Independent control of the driving mechanism lifting and lowering, the heating coil power, the cylinder switch door, and the pick-and-place robot pick-and-place light is selected according to the heating situation.

[0038] In an optional embodiment, the controller 8 is connected to the top of the heating chamber through an N-shaped connecting rod 15. The N-shaped connecting rod 15 is a hollow tube for laying wires or data cables. The two ends of the N-shaped connecting rod 15 are respectively hinged to the heating chamber and the controller 8, so that the controller 8 can be switched between the front and side of the heating chamber by rotation. Specifically, when the door is opened, the controller 8 is rotated and moved to the side of the heating chamber to meet the needs of the picking and placing robot for taking the bar 9. In this embodiment, the main body of the heating chamber is a metal shell with an insulating layer inside. An observation window is provided on the left door 1 or the right door 7, and the observation window is provided with heat-resistant organic glass.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A high-temperature alloy bar surface rapid heating device, characterized in that: include: A heating chamber, wherein the heating chamber is provided with at least two heating stations for placing the bars to be heated; A heating coil having a heating cavity corresponding to the bar to be heated and extending longitudinally therethrough, so as to heat the exterior of the bar to be heated which is sleeved in the heating cavity; A driving mechanism is provided for each heating station, and the driving mechanism drives the heating coil in the longitudinal direction to heat the bar material to be heated as a whole through longitudinal displacement.

2. The high-temperature alloy bar surface rapid heating device according to claim 1, characterized in that: The heating coil is arranged in a mounting member, the mounting member has a central hole corresponding to the heating coil, and a heat insulation layer is provided between the heating coil and the mounting member.

3. The high-temperature alloy bar surface rapid heating device according to claim 2, characterized in that: The driving mechanism comprises: A column, wherein a lead screw extending in the longitudinal direction is provided on a side of the column close to the heating station, and the mounting member is assembled with the lead screw through a thread; A slide bar, wherein the column is provided with a slide bar corresponding to the mounting piece, and the mounting piece is provided with a slide groove corresponding to the slide bar.

4. The high-temperature alloy bar surface rapid heating device according to claim 1, characterized in that: The heating station is provided with a placement rod extending in the longitudinal direction, and the upper end of the placement rod is provided with a placement plate. The outer diameters of the placement plate and the placement rod are both smaller than the inner diameter of the heating chamber.

5. The high-temperature alloy bar surface rapid heating device according to claim 4, characterized in that: The upper surface of the placement plate is provided with protrusions.

6. The high-temperature alloy bar surface rapid heating device according to claim 1, characterized in that: The side wall of the heating chamber is provided with a door opening for a heating station, and a left door and a right door are respectively installed on the left and right sides of the door opening through push-pull tracks.

7. The high-temperature alloy bar surface rapid heating device according to claim 1, characterized in that: A temperature monitoring module is provided in the heating chamber and is directed toward the bar material along the axial direction of the heating cavity.

8. The high-temperature alloy bar surface rapid heating device according to claim 7, characterized in that: The heating coil, driving mechanism and temperature monitoring module are correspondingly connected to the controller.

9. The high-temperature alloy bar surface rapid heating device according to claim 8, characterized in that: The controller is connected above the heating chamber via an N-shaped connecting rod, and the two ends of the N-shaped connecting rod are hinged to the heating chamber and the controller respectively, so that the controller can be switched in front of and on the side of the heating chamber by rotation.

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