Method for manufacturing reference block of austenitic stainless steel T-shaped welded joint

Abstract

The invention relates to the technical field of ultrasonic detection of austenitic stainless steel T-shaped welded joints, and provides a method for manufacturing a reference block of an austenitic stainless steel T-shaped welded joint, which comprises the following steps of: analyzing and recording size structure information of a to-be-detected austenitic stainless steel T-shaped welded joint, according to the size structure information of the austenitic stainless steel T-shaped welding joint to be detected, a reference block blank is manufactured; according to the size structure information of the austenitic stainless steel T-shaped welding joint to be detected, determining the actual position of a reflector on the reference block blank; and arranging an artificial reflector at the real position of the reflector to obtain the reference block of the to-be-detected austenitic stainless steel T-shaped welded joint. The reference block of the to-be-detected austenitic stainless steel T-shaped welded joint, which is manufactured by using the method, can meet the manufacturing requirement of a sensitivity curve, so that ultrasonic detection can be effectively carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultrasonic testing of austenitic stainless steel T type welded joints, and particularly relates to a method for manufacturing a comparison block of an austenitic stainless steel T type welded joint. BACKGROUND

[0002] With the vigorous development of nuclear power projects in China, the quality requirements for nuclear power equipment are increasingly strict, and the demand for ultrasonic testing of austenitic stainless steel welded joints is proposed in product design and manufacturing.

[0003] Due to the coarse columnar grain of the austenitic stainless steel weld, the structure is not uniform, and has obvious anisotropy; the columnar grain of the weld area is different from the grain structure of the base material, and there is an obvious heterogeneous interface. Therefore, the ultrasonic testing comparison block of the austenitic stainless steel T type welded joint is different from the ultrasonic testing comparison block of the austenitic stainless steel butt joint.

[0004] The existing ultrasonic testing technology only has the design of the comparison block of the austenitic stainless steel butt joint, but does not have the design of the comparison block of the austenitic stainless steel T type welded joint. When facing the requirement of ultrasonic testing of the austenitic stainless steel T type welded joint, due to the lack of the comparison block, the sensitivity curve cannot be manufactured, and the ultrasonic testing cannot be effectively performed. SUMMARY

[0005] In view of the above technical problems, a method for manufacturing a comparison block of an austenitic stainless steel T type welded joint is provided.

[0006] The technical means adopted by the present application are as follows: A method for manufacturing a comparison block of an austenitic stainless steel T type welded joint, comprising the following steps: S1: analyzing and recording the size and structure information of the austenitic stainless steel T type welded joint to be detected, and manufacturing a comparison block blank according to the size and structure information of the austenitic stainless steel T type welded joint to be detected; S2: determining the reflection body actual position on the comparison block blank according to the size and structure information of the austenitic stainless steel T type welded joint to be detected; S3: setting an artificial reflection body at the reflection body actual position to obtain the comparison block of the austenitic stainless steel T type welded joint to be detected.

[0007] Further, the size and structure information of the comparison block blank is consistent with the size and structure information of the austenitic stainless steel T type welded joint to be detected; the size and structure information includes the web thickness, the wing plate thickness, the welding method, the groove form and the welding material.

[0008] Furthermore, the weld of the comparison test block blank has a set number of more weld layers than the weld of the austenitic stainless steel T-shaped weld joint to be tested.

[0009] Furthermore, the length of the weld of the comparison test block blank is not less than a set length.

[0010] Furthermore, the S2 includes the following steps: S21: drawing a plan view of the austenitic stainless steel T-shaped welded joint to be inspected based on the size and structure information of the austenitic stainless steel T-shaped welded joint to be inspected; S22: setting a simulated probe detection direction on the plan view of the austenitic stainless steel T-shaped weld joint to be inspected, and determining a simulated scanning coverage weld area on the plan view of the austenitic stainless steel T-shaped weld joint to be inspected based on the simulated probe detection direction, wherein the simulated scanning coverage weld area includes a simulated scanning weld area depth range; S23: Determine a preset position of a reflector on a plan view of the austenitic stainless steel T-shaped weld joint to be inspected based on a simulated scanning depth range of the weld area, wherein the actual position of the reflector is located at a position on the comparison test block corresponding to the preset position of the reflector.

[0011] Furthermore, the simulation probe detection direction is any one of the web probe detection direction and the wing plate probe detection direction; the starting point of the web probe detection direction is located on the edge of the web in the plan view of the austenitic stainless steel T-type welded joint to be tested, and the web probe detection direction passes through the web and weld on the plan view of the austenitic stainless steel T-type welded joint to be tested in sequence; the starting point of the wing plate probe detection direction is located on the edge of the wing in the plan view of the austenitic stainless steel T-type welded joint to be tested, and the wing plate probe detection direction passes through the wing and weld on the plan view of the austenitic stainless steel T-type welded joint to be tested in sequence.

[0012] Furthermore, there are at least three preset positions of the reflector, all of which are located on the weld of the plan view of the austenitic stainless steel T-type weld joint to be inspected; the vertical projections of two of the preset positions of the reflector on the depth range of the simulated scanning weld area are respectively located at the two ends of the depth range of the simulated scanning weld area, and the vertical projections of the remaining preset positions of the reflector on the depth range of the simulated scanning weld area are located between the two ends of the depth range of the simulated scanning weld area.

[0013] Furthermore, the artificial reflector is a transverse through hole, and the length direction of the transverse through hole is consistent with the length direction of the weld of the comparison test block blank.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention provides a method for preparing a comparison test block for an austenitic stainless steel T-type welded joint, which solves the problem of lack of a comparison test block when facing the ultrasonic testing requirements of austenitic stainless steel T-type welded joints. The comparison test block of the austenitic stainless steel T-type welded joint to be tested prepared by the present invention can meet the requirements for making a sensitivity curve, and thus can effectively perform ultrasonic testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is an overall flow chart of a method for making a comparative test block of an austenitic stainless steel T-shaped welded joint according to the present invention; Figure 2 This is an overall flow chart of S2 in a method for making a comparative test block of an austenitic stainless steel T-shaped welded joint according to the present invention; Figure 3 is a plan view of the austenitic stainless steel T-shaped weld joint to be tested in Example 1 of the present invention; Figure 4 This is a diagram showing the overall structure of a comparison test block of an austenitic stainless steel T-shaped welded joint to be tested in Example 1 of the present invention; Figure 5 is a plan view of the austenitic stainless steel T-shaped weld joint to be tested in Example 2 of the present invention; Figure 6 This is a diagram showing the overall structure of a comparison test block of an austenitic stainless steel T-shaped welded joint to be tested in Example 2 of the present invention; Figure markings: 1-web; 2-wing plate; 3-weld; 4-allowance weld layer; 5-artificial reflector; 6-web probe detection direction; 7-wing plate probe detection direction; 8-simulated scanning coverage weld area; 9-simulated scanning weld area depth range; 10-probe detection direction movement range. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting on the application or its applications or uses. Based upon a review of the embodiments contained herein, those of ordinary skill in the art can make other embodiments that are within the scope of the application without undue experimentation. Persons of ordinary skill in the art can obtain all other embodiments from the embodiments in the present application without making any creative efforts, which fall within the scope of protection of the present application.

[0019] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0020] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless otherwise specifically stated. It should be apparent that the dimensions of the various parts shown in the drawings are not to scale and are only meant to illustrate the general principles of the application. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail but should be considered as part of the description of the application. In all examples shown and discussed herein, any specific value should be interpreted as illustrative only and not as a limitation. Thus, other examples of the example embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings and, as such, further discussion of such items need not be repeated in the subsequent drawings.

[0021] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0022] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "above" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" may include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0024] Example 1: like Figures 1 to 4 As shown, a method for preparing a comparative test block of an austenitic stainless steel T-shaped welded joint includes the following steps: S1: Analyze and record the size and structure information of the austenitic stainless steel T-type welded joint to be tested, and make a comparison test block blank based on the size and structure information of the austenitic stainless steel T-type welded joint to be tested; S2: Determine the actual position of the reflector on the comparison test block according to the dimensional and structural information of the austenitic stainless steel T-type welded joint to be tested; S3: An artificial reflector 5 is set at the actual reflector position to obtain a comparison test block of the austenitic stainless steel T-shaped welded joint to be tested.

[0025] In this embodiment, the dimensional structure information of the comparison test block is consistent with the dimensional structure information of the austenitic stainless steel T-type weld joint to be tested; the dimensional structure information includes web thickness, wing plate thickness, welding method, groove form and welding material.

[0026] Specifically, the web thickness is 50 mm, and the wing thickness is 30 mm. During the welding process, liquid penetration testing is performed after the first layer and every three layers. Only after passing the test can the next welding step be performed to ensure the weld quality of the comparison test block blank.

[0027] In this embodiment, the weld 3 of the comparison test block blank has a set number of more weld layers than the weld of the austenitic stainless steel T-shaped weld joint to be tested.

[0028] Specifically, in order to reserve sufficient processing position for the artificial reflector 5, the weld 3 of the comparison test block blank should be welded 1-2 layers more than the weld of the austenitic stainless steel T-shaped welded joint to be detected, and the 1-2 layers of overwelding are set as the allowance welding layer 4.

[0029] In the embodiment, the length of the weld 3 of the comparison test block blank is not less than the set length.

[0030] Specifically, the length of the weld 3 of the comparison test block blank should be large enough, and the two ends where the weld quality is not easy to guarantee should be cut off in the final processing stage, and the length of the remaining weld 3 is not less than 60 mm.

[0031] In the embodiment, the S2 includes the following steps: S21: drawing a plan view of the austenitic stainless steel T-shaped welded joint to be detected according to the size and structure information of the austenitic stainless steel T-shaped welded joint to be detected; S22: setting a simulated probe detection direction on the plan view of the austenitic stainless steel T-shaped welded joint to be detected, and determining a simulated scanning weld coverage area 8 on the plan view of the austenitic stainless steel T-shaped welded joint to be detected according to the simulated probe detection direction, the simulated scanning weld coverage area 8 including a simulated scanning weld area depth range 9; S23: determining a reflector preset position on the plan view of the austenitic stainless steel T-shaped welded joint to be detected according to the simulated scanning weld area depth range 9, the reflector preset position being located at a position on the comparison test block blank corresponding to the reflector preset position.

[0032] Specifically, when making a probe distance-amplitude curve, the simulated scanning weld area depth range 9 needs to be included, which is a prior art and will not be described here.

[0033] In the embodiment, the simulated probe detection direction is a web probe detection direction 6, the starting point of the web probe detection direction 6 being located on the edge of the web 1 of the plan view of the austenitic stainless steel T-shaped welded joint to be detected and scanned within a set probe detection direction movement range 10 (in the embodiment, the probe detection direction movement range 10 is parallel to the length direction of the web 1), the web probe detection direction 6 sequentially passing through the web 1 and the weld 3 on the plan view of the austenitic stainless steel T-shaped welded joint to be detected.

[0034] In the embodiment, the reflector preset positions are arranged on the weld 3 in the plan view of the austenitic stainless steel T-shaped welded joint to be detected, and there are at least three of the reflector preset positions. The vertical projections of two of the reflector preset positions on the simulated scanning weld region depth range 9 are respectively located on the two ends of the simulated scanning weld region depth range 9, and the vertical projections of the remaining reflector preset positions on the simulated scanning weld region depth range 9 are located between the two ends of the simulated scanning weld region depth range 9.

[0035] Specifically, as shown in Figure 4 , the reflector preset positions are arranged on the interface between the wing plate 2 and the weld 3 in the plan view of the austenitic stainless steel T-shaped welded joint to be detected.

[0036] In the embodiment, the artificial reflector 5 is a transverse through hole, and the length direction of the transverse through hole is consistent with the length direction of the weld 3 of the contrast test block blank.

[0037] Specifically, the diameter of the transverse through hole is 2 mm.

[0038] Embodiment 2 As shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , in the embodiment, the simulated probe detection direction is a wing plate probe detection direction 7. The starting point of the wing plate probe detection direction 7 is located on the edge of the wing plate 2 in the plan view of the austenitic stainless steel T-shaped welded joint to be detected, and scanning is performed within the set probe detection direction moving range 10 (in the embodiment, the probe detection direction moving range 10 is parallel to the length direction of the wing plate 2). The wing plate probe detection direction 7 sequentially passes through the wing plate 2 and the weld 3 in the plan view of the austenitic stainless steel T-shaped welded joint to be detected.

[0039] In the embodiment, the reflector preset positions are arranged on the weld 3 in the plan view of the austenitic stainless steel T-shaped welded joint to be detected, and there are at least three of the reflector preset positions. The vertical projections of two of the reflector preset positions on the simulated scanning weld region depth range 9 are respectively located on the two ends of the simulated scanning weld region depth range 9, and the vertical projections of the remaining reflector preset positions on the simulated scanning weld region depth range 9 are located between the two ends of the simulated scanning weld region depth range 9.

[0040] Specifically, as shown in Figure 6As shown, there are four preset positions of the reflector, wherein the vertical projections of two of the preset positions of the reflector on the simulated scanning weld area depth range 9 are respectively located at the two ends of the simulated scanning weld area depth range 9, and the vertical projections of the remaining two preset positions of the reflector on the simulated scanning weld area depth range 9 are both located between the two ends of the simulated scanning weld area depth range 9 and their positions are different from each other.

[0041] The rest is the same as in Example 1 and will not be described in detail here.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing a comparative test block of an austenitic stainless steel T-shaped welded joint, characterized in that: The following steps are involved: S1: Analyze and record the size and structure information of the austenitic stainless steel T-type welded joint to be tested, and make a comparison test block blank based on the size and structure information of the austenitic stainless steel T-type welded joint to be tested; S2: Determine the actual position of the reflector on the comparison test block according to the dimensional and structural information of the austenitic stainless steel T-type welded joint to be tested; S3: An artificial reflector is set at the actual reflector position to obtain a comparison test block of the austenitic stainless steel T-shaped welded joint to be tested.

2. The method for preparing a comparative test block of an austenitic stainless steel T-shaped welded joint according to claim 1, characterized in that: The size and structure information of the comparison test block blank is consistent with the size and structure information of the austenitic stainless steel T-shaped welded joint to be tested; The dimensional structure information includes web thickness, flange thickness, welding method, groove form and welding material.

3. The method for preparing a comparative test block of an austenitic stainless steel T-shaped welded joint according to claim 2, characterized in that: The weld seam of the comparative test block blank has a set number of more layers than the weld seam of the austenitic stainless steel T-shaped weld joint to be tested.

4. The method for preparing a comparative test block of an austenitic stainless steel T-shaped welded joint according to claim 2, characterized in that: The length of the weld of the comparison test block blank is not less than the set length.

5. The method for preparing a comparative test block of an austenitic stainless steel T-shaped welded joint according to claim 1, characterized in that: The S2 comprises the following steps: S21: drawing a plan view of the austenitic stainless steel T-shaped welded joint to be inspected based on the size and structure information of the austenitic stainless steel T-shaped welded joint to be inspected; S22: setting a simulated probe detection direction on the plan view of the austenitic stainless steel T-shaped weld joint to be inspected, and determining a simulated scanning coverage weld area on the plan view of the austenitic stainless steel T-shaped weld joint to be inspected based on the simulated probe detection direction, wherein the simulated scanning coverage weld area includes a simulated scanning weld area depth range; S23: Determine a preset position of a reflector on a plan view of the austenitic stainless steel T-shaped weld joint to be inspected based on a simulated scanning depth range of the weld area, wherein the actual position of the reflector is located at a position on the comparison test block corresponding to the preset position of the reflector.

6. The method for making a comparative test block of an austenitic stainless steel T-shaped welded joint according to claim 5, characterized in that: The detection direction of the simulated probe is any one of the detection direction of the web probe and the detection direction of the wing plate probe; The starting point of the web probe detection direction is located on the edge of the web of the plane view of the austenitic stainless steel T-shaped welded joint to be detected, and the web probe detection direction passes through the web and weld on the plane view of the austenitic stainless steel T-shaped welded joint to be detected in sequence; The starting point of the wing plate probe detection direction is located on the edge of the wing plate in the plan view of the austenitic stainless steel T-shaped welded joint to be detected, and the wing plate probe detection direction passes through the wing plate and weld in the plan view of the austenitic stainless steel T-shaped welded joint to be detected in sequence.

7. The method for making a comparative test block of an austenitic stainless steel T-shaped welded joint according to claim 5, characterized in that: There are at least three preset reflector positions, all of which are located on the weld seam of the plane view of the austenitic stainless steel T-shaped weld joint to be tested; The vertical projections of two of the preset positions of the reflectors on the depth range of the simulated scanning weld area are respectively located at the two ends of the depth range of the simulated scanning weld area, and the vertical projections of the remaining preset positions of the reflectors on the depth range of the simulated scanning weld area are located between the two ends of the depth range of the simulated scanning weld area.

8. The method for making a comparative test block of an austenitic stainless steel T-shaped welded joint according to claim 1, characterized in that: The artificial reflector is a transverse through hole, and the length direction of the transverse through hole is consistent with the length direction of the weld of the comparison test block blank.

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