Novel inductor for plane induction quenching

Abstract

According to the novel inductor for plane induction quenching, the bottom face of an induction body is of an arc convex face structure with the middle protruding outwards, the arc convex face of the induction body faces the plane of a workpiece during induction quenching, and the arc convex face of the induction body is arranged downwards and fixedly inserted into a cooling pipe of an open annular structure; the opening in the side wall of the sensing body corresponds to the opening position of the cooling pipe, two pipe openings in the opening end of the cooling pipe are fixedly connected with one ends of the two connecting pipes in a matched mode respectively, and the other ends of the two connecting pipes are connected with the high-frequency induction quenching machine. By optimizing the inductor structure and adopting the induction body of which the bottom surface is of the arc convex surface structure of which the middle part protrudes outwards, the distance between the central part of a heating plane of a workpiece and the inductor is shortened, the effect of simultaneously heating the periphery and the center of the workpiece during induction quenching heating is achieved, and the heating difficulty of the central part of the heated plane of the workpiece is eliminated; and the heating uniformity of the workpiece is ensured, a quenching layer with uniform thickness is obtained, and the yield of products is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to induction equipment technical field, concretely relates to a novel inductor for plane induction quenching. BACKGROUND

[0002] Induction quenching is a kind of surface quenching technology commonly used in actual production, and its principle is to use electromagnetic induction law to generate eddy current heating in the workpiece, which is widely used in industrial manufacturing due to high thermal efficiency and easy control of quenching layer thickness. In induction quenching operation, the main working component is electromagnetic inductor. When the workpiece is inductively heated, the heated surface of the workpiece needs to be close to the electromagnetic inductor. After the heated surface reaches the specified temperature, it is placed in the cooling medium for cooling. The type of electromagnetic inductor is an important factor to determine the depth and uniformity of the quenched layer of the heated surface. In the past, the electromagnetic inductor for heating plane workpieces mainly used a plane device. During induction heating, the distribution of eddy current in the workpiece is uneven, and the center part has a small induction current density. During the heating process, the heated plane has the defects of difficult heating in the center part and low heating rate, which easily causes the problems of insufficient core quenching effective depth or peripheral overburning, thereby reducing the yield of induction quenching.

[0003] To ensure the uniformity of the effective quenching layer depth of the workpiece center and edge, the existing treatment methods are: 1) extending the induction heating time; 2) shortening the distance between the heated surface and the electromagnetic inductor. In the above two methods, extending the heating time will cause the edge layer depth of the workpiece to exceed the process requirement, and shortening the distance between the electromagnetic inductor and the workpiece may cause the edge part of the workpiece to overburn. These two treatment methods are difficult to operate, and the yield of the workpiece is low. Therefore, it is necessary to improve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem: provide a novel inductor for plane induction quenching, through optimizing inductor structure, adopt the circular arc convex surface structure of the bottom surface and outward convex middle part of the inductor, shorten the distance between the workpiece heating plane center part and the inductor, reach the effect that the workpiece is heated around and in the center at the same time during induction quenching, solve the problems of difficult heating in the center part of the workpiece heated plane, low heating rate, easy to cause insufficient core quenching effective depth or peripheral overburning of the traditional structure, ensure the uniformity of workpiece heating, get the quenching layer with uniform thickness, improve the yield of product.

[0005] The utility model discloses a technical scheme: The novel inductor for plane induction quenching, including the sensitizer, cooling pipe and connecting pipe, the sensitizer bottom surface presents the circular arc convex surface structure of the middle part to the outward bulge, and the circular arc convex surface of sensitizer is towards the workpiece plane during induction quenching, the sensitizer circular arc convex surface sets down and inserts and fixes in the cooling pipe of open ring structure, and the opening on the sensitizer side wall corresponds with the opening position of cooling pipe, two pipe mouths of cooling pipe opening end are connected with two connecting pipe one end respectively, and two connecting pipe other end is connected with high -frequency induction quenching machine.

[0006] Among them, the height difference of the middle part of the sensitizer circular arc convex surface from the edge position is 2mm-5mm.

[0007] Further, the sensitizer upper end surface is level with the cooling pipe upper pipe wall, and the sensitizer circular arc convex surface protrudes the cooling pipe lower pipe wall.

[0008] Further, the connecting pipe is in L-shaped structure, and two connecting pipes are symmetrically arranged.

[0009] Further, the two pipe mouths of the cooling pipe are chamfered, and the two pipe mouths of the cooling pipe and the connecting pipes are integrally connected by brass brazing.

[0010] Further, the cross-shaped groove on the sensitizer is arranged on the ball groove on the upper end of the sensitizer and penetrates the circular arc convex surface, and one end of the horizontal groove in the cross-shaped groove penetrates the side wall of the sensitizer to form an opening.

[0011] The utility model discloses the advantages compared with prior art:

[0012] 1. The technical scheme shortens the distance between the workpiece heating plane center part and the inductor by optimizing the inductor structure and adopting the sensitizer with the circular arc convex surface structure, so that the workpiece is heated around and in the center at the same time during induction quenching heating.

[0013] 2. The technical scheme solves the problems of the traditional structure, such as difficulty in heating the workpiece heating plane center part, low heating rate, easy to cause insufficient effective depth of heart quenching or peripheral overburning, ensures the workpiece heating uniformity, obtains the quenching layer with uniform thickness, and improves the product yield.

[0014] 3. The technical scheme has simple structure, wide application range, and can be used for common plane workpiece in induction quenching, and can also be used to solve similar problems.

[0015] 4. The technical scheme is easy to operate, and the heating effect is reliable. Compared with the processed plane workpiece, the novel inductor has obvious improvement effect on the quenching layer, improves the yield, and is low in cost and safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the main view of the utility model structure;

[0017] Figure 2 It is the bottom view of the utility model structure;

[0018] Figure 3 It is the main view of the utility model structure;

[0019] Figure 4 It is the main view of the utility model structure; DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below, Figures 1-4 It should be apparent that the described embodiments are only a part of embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] It should be noted that in this article, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In this article, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations. The element defined by the statement "includes a..." does not exclude the presence of another identical element in the process, method, article or device including the element.

[0023] The novel inductor for plane induction quenching, such as Figures 1-4As shown, it comprises the inductor 1, the cooling pipe 2 and the connecting pipe 3, the bottom surface of the inductor 1 is a circular-arc convex surface structure with the middle part outwardly convex, and the circular-arc convex surface of the inductor 1 faces the workpiece plane during induction hardening, the circular-arc convex surface of the inductor 1 is arranged downwardly in the cooling pipe 2 with the open ring structure, and the opening on the side wall of the inductor 1 corresponds to the opening position of the cooling pipe 2, the two pipe openings of the opening end of the cooling pipe 2 are respectively connected with one end of the two connecting pipes 3, and the other end of the two connecting pipes 3 is connected with the high-frequency induction hardening machine; in the above structure, the inductor structure is optimized, the inductor 1 with the bottom surface of the circular-arc convex surface structure with the middle part outwardly convex is adopted, the distance between the center part of the workpiece heating plane and the inductor is shortened, and the effect that the center part and the surrounding of the workpiece are simultaneously heated during induction hardening is achieved;

[0024] In the above structure, the inductor structure is optimized, the inductor 1 with the bottom surface of the circular-arc convex surface structure with the middle part outwardly convex is adopted, the distance between the center part of the workpiece heating plane and the inductor is shortened, and the effect that the center part and the surrounding of the workpiece are simultaneously heated during induction hardening is achieved; Figure 3 In the above structure, the inductor structure is optimized, the inductor 1 with the bottom surface of the circular-arc convex surface structure with the middle part outwardly convex is adopted, the distance between the center part of the workpiece heating plane and the inductor is shortened, and the effect that the center part and the surrounding of the workpiece are simultaneously heated during induction hardening is achieved;

[0025] In the above structure, the inductor structure is optimized, the inductor 1 with the bottom surface of the circular-arc convex surface structure with the middle part outwardly convex is adopted, the distance between the center part of the workpiece heating plane and the inductor is shortened, and the effect that the center part and the surrounding of the workpiece are simultaneously heated during induction hardening is achieved;

[0026] The technical scheme has simple structure, reasonable design and diversified size, solves the problems of difficulty in heating the center part of the heated plane of the workpiece, low heating rate, easy to cause insufficient effective depth of core quenching or overburning of the periphery of the traditional structure, guarantees the uniformity of workpiece heating, obtains a quenching layer with uniform thickness, improves the yield of products, has simple structure, wide application range, can be used for common plane workpieces in induction quenching, can also be popularized to solve similar problems, is convenient to operate, has reliable heating effect, and compared with the processed plane workpiece, the new inductor has obvious improvement effect on the quenching layer, improves the yield, is low in cost, safe and reliable.

[0027] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

[0028] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A novel inductor for planar induction hardening, characterized in that: The device includes a sensing body (1), a cooling pipe (2), and a connecting pipe (3). The bottom surface of the sensing body (1) has a circular arc convex surface structure that protrudes outward from the center. During induction hardening, the circular arc convex surface of the sensing body (1) faces the workpiece plane. The circular arc convex surface of the sensing body (1) is set downward and inserted and fixed in the cooling pipe (2) with an open ring structure. The opening on the side wall of the sensing body (1) corresponds to the opening position of the cooling pipe (2). The two pipe openings at the opening end of the cooling pipe (2) are respectively adapted and fixed to one end of the two connecting pipes (3), and the other end of the two connecting pipes (3) is connected to the high-frequency induction hardening machine.

2. The novel inductor for planar induction hardening according to claim 1, characterized in that: The height difference between the center of the arc convex surface of the sensor (1) and the edge is 2mm to 5mm.

3. The novel inductor for planar induction hardening according to claim 1, characterized in that: The upper end face of the sensor (1) is flush with the upper wall of the cooling pipe (2), and the arc convex surface of the sensor (1) protrudes from the lower wall of the cooling pipe (2).

4. The novel inductor for planar induction hardening according to claim 1, characterized in that: The connecting pipe (3) has an L-shaped structure, and the two connecting pipes (3) are symmetrically arranged.

5. The novel inductor for planar induction hardening according to any one of claims 1-4, characterized in that: The two ends of the cooling pipe (2) are chamfered to the two connecting pipes (3), and the two ends of the cooling pipe (2) are connected to the connecting pipes (3) and the cooling pipe (2) and the sensor (1) are all brazed together.

6. The novel inductor for planar induction hardening according to claim 5, characterized in that: The cross-shaped groove (4) on the sensor (1) is provided on the ball groove at the upper end of the sensor (1) and extends to the arc convex surface, and one end of the horizontal groove in the cross-shaped groove (4) extends to the side wall of the sensor (1) to form an opening.

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