Complete inspection template for rapid detection of fillet weld

Abstract

A complete inspection sample plate for rapid detection of fillet welds comprises ten square inspection sample plates with the side length of 40mm and the thickness of 2mm, a first fillet with the size of R1 and a second fillet with the size of R2 are formed on one side of each inspection sample plate, and a first chamfer and a second chamfer are formed on the other side of each inspection sample plate. The two side length sizes of the first chamfer are b1 and b2 respectively, and the two side length sizes of the second chamfer are b3 and b4 respectively; specifically, the height of a fillet weld designed welding throat is defined as a, R1 = square root of 2 * a, and R2 = square root of 2 * a + 0.2 * a + 1; b1 = square root of 2 * a + 0.15 * a + 1.5, and b2 = square root of 2 * a; b3 = square root of 2 * a + 0.15 * a + 1, and b4 = square root of 2 * a + 0.15 * a + 1; the complete inspection template is small in size, and is very suitable for inspection of fillet welds with small spacing; correspondingly, fillet weld problems such as overlarge convexity, asymmetry of weld legs and overlarge effective thickness of weld joints needing to be inspected can be visually judged.

Description

Technical Field

[0001] The utility model relates to a complete set of inspection templates for rapid detection of fillet welds. Background Art

[0002] During the fillet welding operation, after the fusion welding is completed, it is necessary to detect the quality of the welded fillet welds to ensure that there are no problems such as excessive weld convexity, asymmetrical fillet legs, and excessive weld thickness in the fillet welds. In existing workshops, conventional weld inspection rulers are generally used for detection. The conventional weld inspection ruler only measures the fillet leg height and needs to be converted according to the relevant international standard ISO5817 standard. This requires a high level of welding inspectors and has a long calculation period, and it cannot be visually judged, resulting in a large workload for welding inspectors and being prone to fatigue and errors.

[0003] The utility model patent with the publication number CN206609374U is an example of a conventional weld inspection ruler. Summary of the Invention

[0004] In view of the deficiencies in the above problems, the utility model provides a complete set of inspection templates for rapid detection of fillet welds.

[0005] To achieve the above object, the utility model provides a complete set of inspection templates for rapid detection of fillet welds, including ten square inspection templates with a side length of 40 mm and a thickness of 2 mm. On one side of each inspection template, a first fillet with a size of R1 and a second fillet with a size of R2 are formed. On the other side of each inspection template, a first chamfer and a second chamfer are formed. The two side lengths of the first chamfer are b1 and b2 respectively, and the two side lengths of the second chamfer are b3 and b4 respectively;

[0006] Specifically, define the designed throat height of the fillet weld as a,

[0007] Then R1 = √2 * a, R2 = √2 * a + 0.2 * a + 1;

[0008] b1 = √2 * a + 0.15 * a + 1.5, b2 = √2 * a;

[0009] b3 = √2 * a + 0.15 * a + 1, b4 = √2 * a + 0.15 * a + 1.

[0010] Furthermore, the values of the designed throat height a of the fillet weld of each inspection template increase in sequence from small to large as 1 mm, 1.2 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 5.0 mm, 6.0 mm.

[0011] Furthermore, the values of the designed throat height a of the fillet weld are marked on the front and back positions at the first fillet of the inspection template.

[0012] Further, for the convenience of distinguishing the second fillet, the first chamfer, and the second chamfer, the positions of the front and back of the second fillet are marked with 503, the positions of the front and back of the first chamfer are marked with 512, and the positions of the front and back of the second chamfer are marked with 5214.

[0013] Further, a threading hole is machined in the middle of the inspection template, facilitating forming an integral kit by threading the inspection templates.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows:

[0015] The complete set of inspection templates is small in size and very suitable for the inspection of fillet welds with small spacings; for problems of fillet welds such as excessive convexity, asymmetric leg lengths, and excessive effective thickness of the weld that need to be inspected, they can be visually judged without conversion, facilitating the operation of welding inspectors, improving inspection efficiency, and not prone to errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic diagram of an inspection template where the designed throat height a is equal to 3;

[0017] Figure 2 FIG. is a schematic diagram of an inspection template where the designed throat height a is equal to 6;

[0018] Figure 3 FIG. is a schematic diagram after threading and connecting multiple inspection templates.

[0019] In the figures: 1, inspection template; 11, first fillet; 12, second fillet; 13, first chamfer; 14, second chamfer; 15, threading hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] As Figure 1 , Figure 2 , Figure 3As shown in the figure, a set of inspection templates for rapid inspection of fillet welds in an embodiment of the present utility model includes ten square inspection templates 1 with a side length of 40 mm and a thickness of 2 mm. On one side of each inspection template 1, a first rounded corner 11 with a size of R1 and a second rounded corner 12 with a size of R2 are formed. On the other side of each inspection template 1, a first chamfer 13 and a second chamfer 14 are formed. The two side lengths of the first chamfer 13 are b1 and b2 respectively, and the two side lengths of the second chamfer 14 are b3 and b4 respectively; specifically, defining the design throat height of the fillet weld as a, then R1 = √2 * a, R2 = √2 * a + 0.2 * a + 1; b1 = √2 * a + 0.15 * a + 1.5, b2 = √2 * a; b3 = √2 * a + 0.15 * a + 1, b4 = √2 * a + 0.15 * a + 1; the values of the design throat height a of the fillet weld of each inspection template 1 are successively 1 mm, 1.2 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 5.0 mm, 6.0 mm from small to large; the values of the design throat height a of the fillet weld are marked on the front and back positions at the first rounded corner 11 of the inspection template 1; for the convenience of distinguishing the second rounded corner 12, the first chamfer 13, and the second chamfer 14, 503 is marked on the front and back positions at the second rounded corner 12, 512 is marked on the front and back positions of the first chamfer 13, and 5214 is marked on the front and back positions of the second chamfer 14; a threading hole 15 is machined in the middle of the inspection template 1 to facilitate forming an overall kit by threading each inspection template 1.

[0021] The size of this set of inspection templates is small, which is very suitable for the inspection of fillet welds with small spacing; corresponding problems of fillet welds such as excessive convexity, asymmetric fillet size, and excessive effective thickness of the weld can be visually judged without conversion, which facilitates the operation of welding inspectors, improves the inspection efficiency, and does not cause errors.

[0022] When specifically using, for the convenience of understanding the present utility model, it is described in combination with the accompanying drawings;

[0023] According to the value of the design throat height a, select a corresponding inspection template, and then detect whether the fillet weld meets the standard requirements, specifically as follows:

[0024] Inspection of fillet size: Align the two sides of the first rounded corner 11 with the position of the fillet weld. If it can be aligned, the fillet size meets the standard requirements; otherwise, it does not.

[0025] Inspection of excessive convexity: Align the two sides of the second rounded corner 12 with the position of the fillet weld. If it can be aligned, the convexity meets the standard requirements; otherwise, there is a problem of excessive convexity (refer to the defect in ISO6520-1 standard).

[0026] Weld leg symmetry inspection: Align both sides of the first chamfer 13 with the position of the fillet weld. It is necessary to perform the alignment operation on both the front and back sides of the inspection template. If alignment can be achieved both times, the welding is symmetric; otherwise, there is a problem of asymmetric weld legs (refer to the defect in ISO6520-1 standard).

[0027] Weld thickness inspection: Align both sides of the second chamfer 14 with the position of the fillet weld. It is necessary to perform the alignment operation on both the front and back sides of the inspection template. If alignment can be achieved both times, the weld thickness meets the standard (since b3 and b4 are of equal length, only one alignment is required here); otherwise, there is a problem of excessive weld thickness (refer to the defect in ISO6520-1 standard).

[0028] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A complete inspection template for rapid detection of fillet welds, characterized in that: It includes ten square inspection templates (1) with a side length of 40 mm and a thickness of 2 mm. On one side of each inspection template (1), a first fillet (11) with a size of R1 and a second fillet (12) with a size of R2 are formed. On the other side of each inspection template (1), a first chamfer (13) and a second chamfer (14) are formed. The two side lengths of the first chamfer (13) are b1 and b2 respectively, and the two side lengths of the second chamfer (14) are b3 and b4 respectively; Specifically, the designed throat height of the fillet weld is defined as a, then R1 = √2 * a, R2 = √2 * a + 0.2 * a + 1; b1 = √2 * a + 0.15 * a + 1.5, b2 = √2 * a; b3 = √2 * a + 0.15 * a + 1, b4 = √2 * a + 0.15 * a + 1.

2. The complete inspection template for rapid detection of fillet welds according to claim 1, characterized in that: The values of the designed throat height a of the fillet weld of each inspection template (1) increase in sequence from small to large as 1 mm, 1.2 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 5.0 mm, 6.0 mm.

3. A complete inspection template for rapid detection of fillet welds according to claim 2, characterized in that: The value of the designed throat height a of the fillet weld is marked on the front and back positions of the inspection template (1) at the first fillet (11).

4. A complete inspection template for rapid detection of fillet welds according to claim 3, characterized in that: A wire-passing hole (15) is machined in the middle of the inspection template (1), which is convenient for forming an integral kit by threading the inspection templates (1).

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