Fillet weld detection ruler and manufacturing method thereof

Abstract

The invention discloses a fillet weld detection ruler and a manufacturing method thereof, and the fillet weld detection ruler comprises a detection ruler plate which is a plate provided with a detection groove, and at least one vertex of the detection ruler plate is a right angle. The detection groove is formed in one right-angle vertex of the detection ruler plate and is obtained by cutting the right-angle vertex of the detection ruler plate to remove a square, and the side length of the cut square is equal to the weld leg size of the fillet weld. The detection groove is clamped at the weld joint, fillet weld detection is achieved, use is simple, convenient and visual, whether the weld leg size meets the requirement or not and the equivalent deviation degree of weld legs on the two sides can be directly judged, data measurement of the vertical plate perpendicularity and the weld joint thickness can be conducted in combination with the steel ruler, and carrying and use are convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship thin plate welding, and particularly relates to a fillet weld inspection gauge and a manufacturing method thereof. Background Art

[0002] In order to strictly control the self-weight of the hull, some hull structures are made of thin plates. There are a large number of fillet welds in these hull structures made of thin plates. Therefore, how to control the leg size of the fillet weld and the size inspection of the fillet weld during the welding production process and after welding is crucial. The traditional fillet weld inspection gauge and measurement method have problems such as difficult measurement, inconvenient use, inaccurate measurement and data reading, and inability to perform weld thickness detection. At the same time, when laser hybrid welding is used, the leg size is small, and the existing inspection gauges cannot complete the weld inspection. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a fillet weld inspection gauge, a manufacturing method thereof and a use method thereof, so as to realize the detection of the fillet weld size of thin plate welding.

[0004] The purpose of the present invention is achieved through the following technical solutions. A fillet weld inspection gauge includes:

[0005] An inspection gauge plate, which is a plate provided with an inspection groove, and at least one vertex of the inspection gauge plate is a right angle.

[0006] The inspection groove is arranged at a right-angle vertex of the inspection gauge plate and is obtained by cutting off a square from the right-angle vertex of the inspection gauge plate. The side length of the cut-off square is equal to the leg size of the fillet weld.

[0007] Preferably, the inspection gauge plate is a regular quadrilateral.

[0008] Preferably, the inspection gauge plate is made of one of stainless steel and plastic.

[0009] Preferably, an inspection groove is arranged at each right-angle vertex of the inspection gauge plate, and the side length of each inspection groove is correspondingly set to different fillet weld sizes.

[0010] Preferably, the side lengths of the inspection groove include at least the following sizes: 5mm, 6mm, 7mm, 8mm.

[0011] Preferably, the side lengths of the inspection groove may also include the following sizes: 1.5mm, 2mm, 2.5mm and 3mm.

[0012] Preferably, the inspection groove arranged on the inspection gauge plate can be an arc groove or a wedge groove to adapt to different fillet welds.

[0013] Preferably, the inspection gauge plate is coated with an anti-corrosion coating.

[0014] Preferably, scales are provided on the detection groove.

[0015] In addition to providing a fillet weld inspection gauge, the present invention further provides a method for manufacturing the above fillet weld inspection gauge, including the following steps:

[0016] Step 1: Take a plate provided with at least one right-angled vertex as the inspection gauge plate;

[0017] Step 2: According to the fillet weld leg size, cut off a right-angled square from the right-angled vertex of the inspection gauge plate to form a detection groove;

[0018] Step 3: Conduct a metrological inspection on the processed detection groove to confirm the machining dimensional accuracy;

[0019] Step 4: Mark the fillet weld leg size numbers on the sides of the detection groove respectively;

[0020] Step 5: Mark the diagonal of the cut-off square to complete the production of the fillet weld inspection gauge.

[0021] The present invention also provides a method for detecting the fillet weld leg size using a fillet weld inspection gauge, and the specific steps are as follows:

[0022] Place the detection groove of the fillet weld inspection gauge with the corresponding size on the fillet weld to be measured, press it tightly against the bottom plate and the vertical plate, and determine whether the welding size meets the requirements;

[0023] The fillet weld inspection gauge includes:

[0024] An inspection gauge plate, which is a plate provided with a detection groove, and at least one vertex of the inspection gauge plate is a right angle;

[0025] A detection groove, which is provided at a right-angled vertex of the inspection gauge plate and is obtained by cutting off a square from the right-angled vertex of the inspection gauge plate. The side length of the cut-off square is equal to the fillet weld leg size.

[0026] Preferably, when determining whether the welding size meets the requirements, if there is a deviation between the two fillet weld leg sizes, the smaller fillet weld leg size is used as the judgment standard basis.

[0027] The present invention also provides a method for detecting the perpendicularity of a fillet weld using a fillet weld inspection gauge, and the specific steps are as follows:

[0028] Place the detection groove of the fillet weld inspection gauge with the corresponding size on the fillet weld to be measured, press it tightly against the bottom plate and the vertical plate, measure the value between the vertical plate and the inspection gauge, and obtain the perpendicularity deformation amount of the vertical plate.

[0029] The present invention also provides a method for detecting the thickness of a fillet weld using a fillet weld inspection gauge, and the specific steps are as follows:

[0030] Place the detection groove of the fillet weld gauge with the corresponding size on the fillet weld to be measured, press it tightly against the bottom plate and the vertical plate, align a steel ruler or a gap gauge with the diagonal, measure the value B from the highest point protruding from the fillet weld to the vertex of the cut square, and obtain the weld thickness C = A - B, where A represents the length of the diagonal of the square of the detection groove.

[0031] The present invention also provides a method for detecting the equal deviation degree of the fillet weld legs on both sides of a fillet weld using a fillet weld gauge. The specific steps are as follows:

[0032] Place the detection groove of the fillet weld gauge with the corresponding size on the fillet weld to be measured, press it tightly against the bottom plate and the vertical plate, measure the difference in the fillet weld leg sizes on both sides with a steel ruler, and judge the equal deviation situation of the fillet weld legs on both sides.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] A fillet weld gauge provided by the present invention, its manufacturing method and usage method can realize the detection of fillet welds by clamping the detection groove at the weld. It is simple, convenient and intuitive to use, can directly judge whether the fillet weld leg size meets the requirements and the equal deviation degree of the fillet weld legs on both sides, and can measure the data of the verticality of the vertical plate and the weld thickness in combination with a steel ruler, which is convenient to carry and use. Brief Description of the Drawings

[0035] Figure 1 It is a schematic structural diagram of a fillet weld gauge in an embodiment of the present invention;

[0036] Figure 2 It is a schematic structural diagram of a laser fillet weld gauge in an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of fillet weld detection in the present invention. Detailed Embodiments

[0038] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0039] The technical solution of the present invention provides a fillet weld gauge, including:

[0040] A gauge plate, which is a plate provided with a detection groove, and at least one vertex of the gauge plate is a right angle.

[0041] The detection groove is arranged at a right-angle vertex of the gauge plate and is obtained by cutting off a square from the right-angle vertex of the gauge plate. The side length of the cut-off square is equal to the fillet weld leg size.

[0042] In an embodiment of the present invention, the detection ruler plate is a regular quadrilateral.

[0043] In an embodiment of the present invention, the detection ruler plate is made of one of stainless steel and plastic.

[0044] In an embodiment of the present invention, detection grooves are provided at each right-angle vertex of the detection ruler plate, and the side length of each detection groove is correspondingly set to different fillet weld sizes.

[0045] As Figure 1 shown, in an embodiment of the present invention, the side lengths of the detection grooves at least include the following dimensions: 5 mm, 6 mm, 7 mm, 8 mm.

[0046] As Figure 2 shown, in an embodiment of the present invention, the side lengths of the detection grooves may also include the following dimensions: 1.5 mm, 2 mm, 2.5 mm, and 3 mm.

[0047] In an embodiment of the present invention, the detection grooves provided on the detection ruler plate may be arc-shaped grooves or wedge-shaped grooves to adapt to different fillet welds. The detection ruler plate is coated with an anti-corrosion coating, and scales are provided on the detection grooves for precise measurement.

[0048] In the technical solution of the present invention, in addition to providing a fillet weld detection ruler, a method for manufacturing the above fillet weld detection ruler is further provided. Taking the fillet weld detection ruler in Figure 1 and Figure 2 as an example, according to the leg size of the hull fillet weld, a detection tool with common leg sizes (5 mm - 8 mm) is manufactured and professionally detected by metrology to meet the accuracy and usage requirements. According to the characteristics of the fillet weld size of laser hybrid welding, special sizes of 1.5 mm, 2 mm, 2.5 mm, and 3 mm can be manufactured, which includes the following steps:

[0049] Step 1: Take a 50 mm × 50 mm × 3 mm (length × width × plate thickness) square stainless steel plate, and process the four corners of the square into 90° right angles;

[0050] Step 2: Remove right-angled squares with side lengths of 5 mm, 6 mm, 7 mm, and 8 mm from the four corners of the square stainless steel plate respectively to form measurement openings;

[0051] Step 3: Conduct professional metrology detection on the four-corner measurement openings formed by processing to confirm the processing dimension accuracy;

[0052] Step 4: Mark the dimension numbers of 5 mm, 6 mm, 7 mm, and 8 mm on the sides of the four-corner measurement openings of the detection ruler respectively;

[0053] Step 5: Mark the diagonal line for weld thickness detection. Other size measurement ports can be made according to the actual fillet weld size measurement requirements.

[0054] As Figure 3 shown, the technical solution of the present invention also provides a method for detecting the fillet weld size of a fillet weld using a fillet weld inspection gauge. A special inspection gauge for the common fillet weld sizes (5 mm - 8 mm) of thin plates is used. According to the fillet weld size requirements in the Welding Procedure Specification (WPS), the fillet weld size, verticality of the vertical plate, weld thickness, and equal deviation degree of the two-sided fillet welds can be accurately measured. According to the characteristics of the fillet weld size in laser hybrid welding, special sizes of 1.5 mm, 2 mm, 2.5 mm, and 3 mm can be made to accurately measure the fillet weld size, verticality of the vertical plate, weld thickness, and equal deviation degree of the two-sided fillet welds. The specific steps are as follows:

[0055] Clean the surface of the weld and the surrounding welding slag splashes, etc. Select the measuring ruler with the corresponding size according to the drawing and the actual fillet weld size requirements. Place the fillet weld inspection gauge with the corresponding size on the fillet weld to be measured, and press it tightly against the bottom plate and the vertical plate. It can directly judge whether the welding size meets the requirements. When there is a deviation in the two-sided fillet weld sizes, the smaller fillet weld size is used as the judgment standard.

[0056] In this embodiment, the fillet weld inspection gauge includes:

[0057] An inspection ruler plate, which is a plate provided with an inspection groove. At least one vertex of the inspection ruler plate is a right angle;

[0058] The inspection groove is set at a right-angle vertex of the inspection ruler plate and is obtained by cutting off a square at the right-angle vertex of the inspection ruler plate. The side length of the cut-off square is equal to the fillet weld size. Specifically, the fillet weld inspection gauge as shown in Figure 1 can be selected.

[0059] As Figure 3 shown, the technical solution of the present invention also provides a method for detecting the verticality of a fillet weld using a fillet weld inspection gauge. The specific steps are as follows:

[0060] Place the fillet weld inspection gauge with the corresponding size on the fillet weld to be measured, and press it tightly against the bottom plate and the vertical plate. Use a steel ruler to measure the value between the vertical plate and the inspection gauge, and measure the verticality deformation amount of the vertical plate.

[0061] As Figure 3 shown, the technical solution of the present invention also provides a method for detecting the thickness of a fillet weld using a fillet weld inspection gauge. The specific steps are as follows:

[0062] Let the diagonal length be A. The diagonal lengths of squares with side lengths of 5mm - 8mm are calculated respectively as: 7.1mm, 8.5mm, 9.9mm, 11.3mm. Similarly, the diagonal lengths of special inspection rulers with fillet weld leg lengths of 1.5mm, 2mm, 2.5mm, and 3mm can be calculated for measuring the weld thickness of laser hybrid welding.

[0063] Place the fillet weld inspection ruler of the corresponding size on the fillet weld to be measured, closely attach it to the bottom plate and the vertical plate. Align a steel ruler or a gap gauge with the diagonal, measure the value B from the highest point protruding from the fillet weld to the vertex of the square, and obtain the weld thickness C = A - B.

[0064] As Figure 3 shown, the technical solution of the present invention also provides a method for detecting the equal deviation degree of the fillet weld legs on both sides of a fillet weld using a fillet weld inspection ruler. The specific steps are as follows:

[0065] Place the fillet weld inspection ruler of the corresponding size on the fillet weld to be measured, closely attach it to the bottom plate and the vertical plate. The equal deviation situation of the fillet weld legs on both sides can be directly judged, and the size difference between the fillet weld legs on both sides can be measured with a steel ruler.

[0066] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A fillet weld detection ruler, characterized in that: The fillet weld detection ruler comprises: The detection ruler is a plate provided with a detection groove, and at least one vertex of the detection ruler is a right angle; The detection groove is arranged on a right-angled vertex of the detection scale plate, and is obtained by cutting away a square from the right-angled vertex of the detection scale plate, wherein the side length of the cut square is equal to the weld leg size of the fillet weld.

2. A fillet weld detection ruler as claimed in claim 1, characterized in that: The detection ruler plate is a regular quadrilateral.

3. A fillet weld detection ruler as claimed in claim 2, characterized in that: The detection ruler plate is made of one of stainless steel and plastic.

4. A fillet weld detection ruler as claimed in claim 3, characterized in that: A detection groove is arranged on each right-angle vertex on the detection scale plate, and the side length of each detection groove is correspondingly set to a different fillet weld size.

5. A fillet weld detection ruler as claimed in claim 4, characterized in that: The side lengths of the detection slot include at least the following dimensions: 5mm, 6mm, 7mm, and 8mm.

6. A fillet weld detection ruler as claimed in claim 5, characterized in that: The side lengths of the detection slot also include the following sizes: 1.5 mm, 2 mm, 2.5 mm and 3 mm.

7. A fillet weld detection ruler as claimed in claim 6, characterized in that: The detection groove arranged on the detection scale plate may be an arc-shaped groove or a wedge-shaped groove to adapt to different fillet welds.

8. A fillet weld detection ruler as claimed in claim 7, characterized in that: The detection scale plate is coated with anti-corrosion paint.

9. A fillet weld detection ruler as claimed in claim 8, characterized in that: The detection slot is provided with a scale.

10. A method for manufacturing a fillet weld detection ruler, characterized in that: The method is used to manufacture the fillet weld detection ruler according to any one of claims 1 to 9, and the method comprises the following steps: Step 1: Take a plate with at least one right-angle vertex as a detection ruler; Step 2: According to the size of the fillet weld leg, cut off a right-angled square from the right-angle vertex of the detection scale plate to form a detection groove; Step 3: Perform metrological inspection on the inspection groove formed by machining to confirm the machining dimensional accuracy; Step 4: Mark the fillet weld leg size numbers on the sides of the inspection groove; Step 5: Mark and cut the diagonal of the square to complete the production of the fillet weld inspection ruler.

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