End quenching sample protection device

Abstract

The utility model belongs to the technical field of end quenching test, and relates to an end quenching sample protection device, which comprises a cylinder, a cover body and a base, the cover body and the base are hermetically connected to the upper end and the lower end of the cylinder, the cylinder comprises a left connecting body and a right connecting body which are detachably connected, and a through hole for inserting an end quenching sample is formed in the cylinder. A step surface matched with a flange at the top of an end quenching sample is further arranged in the cylinder body, a groove matched with the through hole is formed in one side, connected with the cylinder body, of the base, and the bottom of the end quenching sample extends into the groove. The device is used for protecting an end quenching sample, can effectively reduce oxidation and decarburization of the end quenching sample in the heating, heat preservation and quenching transfer process in a furnace, can prevent toppling and quenching temperature reduction, and improves the accuracy of an end quenching test; and meanwhile, the device can be recycled, has no auxiliary material loss and no pollution to the environment, and is suitable for end quenching tests of different steel types.

Description

TECHNICAL FIELD

[0001] The utility model belongs to end quenching test technical field, concretely relates to an end quenching test sample protection device. BACKGROUND

[0002] Hardenability refers to the ability of steel to obtain hardening layer depth during quenching, which is an inherent property of steel and is one of important indexes for evaluating quenching performance of steel parts, and the size of hardenability has a great influence on service life and performance of steel parts, and it is an important factor for material selection and development of heat treatment process, so accurate detection of hardenability is particularly important. End quenching test is one of methods for measuring hardenability of steel and is also a detection method commonly used in industry at present. In the national standard "GB / T225 end quenching test method for hardenability of steel", it is required that wind should be prevented from blowing on the test sample during the whole heating and quenching process; the test sample should be taken preventive measures to reduce decarburization or carburization of the test sample to the minimum during heating to avoid forming obvious oxide skin; and the time from taking the test sample out of the furnace to starting water spraying should be no more than 5s. The commonly used operation method is to vertically place the test sample in the heating furnace, clamp the flange of the test sample by using pliers after heat preservation, and then transfer the test sample to the test sample support of the end quenching machine. This operation has the following defects: first, the test sample is easy to fall during heating in the furnace or clamping, and the test sample cannot be quickly taken out, and the time exceeds the specified 5s; second, there is a large amount of air in the furnace, and the test sample surface is easy to produce oxidation and decarburization; and third, the test sample is easy to be affected by the environment, such as wind, during quenching transfer, which can obviously reduce the quenching temperature and affect the accuracy of the end quenching test result. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the defects and deficiencies in the prior art, based on the fact that the end quenching test sample is easy to produce oxidation and decarburization during heating and quenching transfer, and the quenching temperature is reduced, and designs an end quenching test sample protection device, and the device can be recycled, has no auxiliary material loss, has no environmental pollution, and is suitable for end quenching test of different steel grades.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of an end quenching test sample protection device, which comprises a cylinder body, a cover body and a base connected to the upper and lower ends of the cylinder body in a sealed manner, the cylinder body comprises a left connecting body and a right connecting body connected in a detachable manner, a through hole for inserting the end quenching test sample is formed in the inside of the cylinder body, and the inside of the cylinder body further has a stepped surface matched with the top flange of the end quenching test sample, the base connected to one side of the cylinder body has a groove matched with the through hole, and the bottom of the end quenching test sample extends into the groove.

[0005] Preferably, the top of the cover body has a cover knob, a sealing ring is arranged below the cover body, and a sealing groove for sealing connection with the cylinder body is formed between the sealing ring and the downwardly extending cover rim of the outer periphery of the cover body.

[0006] Preferably, the outer side of the barrel is provided with a clamping handle.

[0007] Preferably, the left connecting body and the right connecting body are respectively provided with a left pin hole and a right pin hole, and the left pin hole and the right pin hole are connected and fixed by a fixing pin.

[0008] Preferably, the inner through hole of the barrel and the end-quenching sample have a gap of 2mm.

[0009] Preferably, the bottom of the end-quenching sample extends downward to the outside of the barrel, and the length of the extension outside the barrel is 10mm.

[0010] Preferably, the upper portion of the base is provided with a fixed boss in sealing cooperation with the fixed groove at the bottom of the barrel, and the cross section of the base is designed as a trapezoid with the upper portion being smaller than the lower portion.

[0011] After the above technical scheme is adopted, the end-quenching sample protection device has the following beneficial effects:

[0012] (1) In the utility model, the cover body is protected by the double protection of the sealing ring and the cover edge, and is in sealing cooperation with the upper portion of the barrel. The fixed groove below the barrel is in sealing cooperation with the fixed boss above the base, and the three form a sealing device, which can prevent the air in the furnace from entering the protection device, and can protect the end-quenching sample during the heating and heat preservation process in the furnace, and can prevent oxidation and decarburization.

[0013] (2) In the utility model, the upper portion of the barrel is in cooperation with the flange of the end-quenching sample through the stepped surface, and supports the sample. The inner through hole of the barrel and the end-quenching sample have a spacing of 2mm, the space is small, and the air is less, so that the sample is not easy to be oxidized and decarburized.

[0014] (3) In the utility model, the base adopts the structure of the upper portion being smaller than the lower portion, which can realize the function of supporting the protection device to be stable and not easy to be tilted. The protection device adopts a split type, which can effectively reduce the deformation of the device and avoid the sample from being stuck.

[0015] (4) In the utility model, no carburizing agent is used, which can reduce the loss of auxiliary materials, avoid the adverse effects of auxiliary materials, and the device can be recycled, has no loss of auxiliary materials, and has no environmental pollution, and is suitable for end-quenching test of different steel types.

[0016] (5) In the utility model, when the end-quenching sample is transferred, the cover body is removed, the clamping pliers are used to clamp the handle, the protection barrel together with the end-quenching sample can be taken out from the furnace, and then the barrel is separated from the left and right connecting bodies, so that the end-quenching sample can be quickly transferred and is not affected by the environment.

[0017] (6)The end quenching sample bottom length exceeds the protection cylinder by 10mm, accurate positioning function when transferring to the end quenching machine sample support is realized, and the end quenching sample main body is in the protection cylinder, heat in the cylinder is transferred to the sample bottom, so that the quenching temperature is not reduced to meet the standard requirement, and the end quenching test result accuracy function is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the end quenching sample protection device of the utility model;

[0019] Figure 2 It is a use sectional view of the end quenching sample protection device of the utility model;

[0020] Figure 3 It is a structure schematic view of the cover body in the utility model;

[0021] Figure 4 It is a structure schematic view of the cylinder body in the utility model;

[0022] Figure 5 It is a structure schematic view of the base in the utility model.

[0023] Wherein: cover knob 1, cover body 2, cover rim 3, sealing ring 4, clamping handle 5, cylinder body 6, left pin hole 7, left connecting body 8, fixed groove 9, fixed boss 10, base 11, right connecting body 12, fixed pin 13, right pin hole 14, end quenching sample 15. DETAILED DESCRIPTION

[0024] The utility model will be further clearly and completely described below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0025] It should be noted that the terms used herein are only for describing specific embodiments, not intended to limit the exemplary embodiments according to the application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or their combination.

[0026] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many options. The intent is to be accurate in describing the principles and novel features of the application. Thus, although the application has been described with reference to specific embodiments thereof, it will be apparent to those of ordinary skill in the art that a number of changes can be made to the embodiments described without departing from the spirit and scope of the application. For example, the various features of the application can be combined in any combination, where possible. Accordingly, the scope of the application is to be construed as encompassing modifications and variations of the specific examples described herein, subject only to the conditions of the prior art.

[0027] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0028] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0029] In addition, it should be noted that the use of "first", "second" and the like words to limit parts, only for the convenience of distinguishing the corresponding parts, if there is no further declaration, the above words have no special meaning, therefore, it cannot be understood as a limitation on the protection scope of the present application.

[0030] The utility model discloses a end quenching sample protection device, as shown in Figures 1-5 The utility model discloses a end quenching sample protection device, as shown in

[0031] The utility model discloses a end quenching sample protection device, as shown in

[0032] The utility model discloses a end quenching sample protection device, as shown in

[0033] The utility model discloses a end quenching sample protection device, as shown in

[0034] In summary, the end quenching sample protection device is used for protecting the end quenching sample, can effectively reduce oxidation decarburization of the end quenching sample in the heating, heat preservation and quenching transfer process in the furnace, can prevent pouring, prevent quenching temperature from reducing, improve the accuracy of the end quenching test; meanwhile, the device can be recycled, has no auxiliary material loss, has no pollution to the environment, and is suitable for end quenching tests of different steel grades.

[0035] The above merely provides a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A quenched end sample protection device characterized by: The utility model relates to a kind of end quenching sample test tubes, including cylinder (6), and sealingly connected cover (2) and base (11) on the upper and lower ends of cylinder (6), the cylinder (6) includes detachably connected left connecting body (8) and right connecting body (12), the through hole for inserting end quenching sample (15) is formed in the cylinder (6) inside, and the cylinder (6) inside also has the step surface matched with the top flange of end quenching sample (15), the base (11) is connected with the recess matched with through hole on one side of cylinder (6), and the bottom of end quenching sample (15) extends into the recess.

2. A quenched sample protection device according to claim 1, wherein: The top of cover (2) has knob (1), and sealing ring (4) is arranged below cover (2), and the sealing groove for sealingly connecting with cylinder (6) is formed between sealing ring (4) and cover rim (3) extending downward from the outer periphery of cover (2).

3. A quenched sample protection device according to claim 1, wherein: Clamping handle (5) is arranged on the outer side of cylinder (6).

4. A quenched sample protection device according to claim 1, wherein: Left pin hole (7) and right pin hole (14) are respectively arranged on left connecting body (8) and right connecting body (12), and left pin hole (7) and right pin hole (14) are connected and fixed by fixed pin (13).

5. A quenched sample protection device as defined in claim 1, wherein: The gap between the through hole in the cylinder (6) and end quenching sample (15) is 2mm.

6. A quenched sample protection device as defined in claim 1, wherein: The bottom of end quenching sample (15) extends downward to the outside of cylinder (6), and the length of the part extending outside cylinder (6) is 10mm.

7. A quenched sample protection device as defined in claim 1, wherein: Fixed boss (10) is arranged above base (11) and sealingly cooperates with fixed groove (9) at the bottom of cylinder (6), and the cross section of base (11) is designed as trapezoidal shape with small upper part and large lower part.

Images