Manufacturing method of embedded part

Abstract

The invention provides a manufacturing method of an embedded part, and relates to the technical field of embedded parts, and the manufacturing method comprises the following steps: S1, cutting and flattening a steel plate or profile steel; s2, punching is conducted on the cut and flattened steel plate or profile steel; s3, after punching and flattening are completed, the steel plate or the profile steel is combined and welded; s4, the surface of the welded embedded part is coated with anti-rust paint; and S5, marking a number and a center line on the manufactured embedded part. The method solves the problems that the manufactured embedded part is not standard in size and cannot be well installed on a construction site, and meanwhile, the manufactured embedded part is inaccurate in positioning during installation, so that deviation is serious after installation, the size of the manufactured embedded part better conforms to an embedded hole of the construction site through the steps, and the installation efficiency is improved. And secondly, positioning is more accurate during installation, so that the construction site is more adaptive to the construction site.

Description

Technical Field

[0001] The present invention relates to the technical field of embedded parts, and in particular to a manufacturing method of embedded parts. Background Art

[0002] Embedded parts, also called prefabricated embedded parts, refer to components that are pre-installed (embedded) in hidden projects during building construction and decoration design. Embedded parts are widely used in steel structure projects and play an important role in transferring steel structure loads to concrete structures in steel structure projects. For example, the fixation of building curtain walls: Building curtain walls are divided into three categories: glass curtain walls, metal curtain walls, and stone curtain walls according to different panel materials. Regardless of which type of curtain wall, the connection between its load-bearing structure system and the main building structure is usually achieved through embedded parts or post-added anchor fasteners. In addition to bearing its own dead load, the curtain wall also needs to bear the influence of loads such as wind force and earthquake. Therefore, whether the connection between the embedded parts and the main building structure is reliable and durable is directly related to the structural safety and service life of the curtain wall.

[0003] Most embedded parts are made of metal. For example, the most commonly used is the perforated welded type embedded part composed of a steel plate and anchor bars (steel bars). The processing method of the perforated welded type embedded part is to cut the steel plate and drill holes in it, insert the steel bars into the holes in the steel plate, and finally weld the steel bars to the steel plate.

[0004] The existing embedded parts are not standardized in size during production, and cannot be well assembled into the specified construction site during use, which affects the construction progress. At the same time, the installation and positioning of the manufactured embedded parts are inaccurate, which affects the accuracy during installation. Summary of the Invention

[0005] The purpose of the present invention is to provide a manufacturing method of embedded parts, which solves the problems that the manufactured embedded parts have non-standard sizes and cannot be well installed on the construction site, and at the same time, the positioning of the manufactured embedded parts during installation is inaccurate, resulting in serious deviation after installation.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions:

[0007] A manufacturing method of embedded parts includes the following steps:

[0008] S1: Cut and plane the steel plate or section steel;

[0009] S2: Drill holes in the cut and planed steel plate or section steel;

[0010] S3: After drilling and planing are completed, combine and weld the steel plate or section steel;

[0011] S4: Apply anti-rust paint on the surface of the welded embedded parts;

[0012] S5: Mark the number and center line on the fabricated embedded parts.

[0013] According to the manufacturing method of the embedded parts provided by the present invention, when planing the edges of the steel plates or sections in S1, it should be carried out according to the requirements of the drawings. At the same time, the straightness of the steel plate edges is checked by using the large right-angle ruler method.

[0014] According to the manufacturing method of the embedded parts provided by the present invention, when planing the sections in S1, a toothless saw is used for cutting to ensure that the ends are flush. The length error of the section cutting is less than ±2L / 1000 and less than 4 mm, and the flatness of the section ends is less than 2 mm.

[0015] According to the manufacturing method of the embedded parts provided by the present invention, when drilling holes in the edges of the steel plates or sections in S2, the diameter of the drilled holes is 8 mm.

[0016] According to the manufacturing method of the embedded parts provided by the present invention, in S3, the steel plates or sections are combined and welded, and at the same time, the positions of the bolt holes are staggered during welding, and they are welded and combined into embedded parts.

[0017] According to the manufacturing method of the embedded parts provided by the present invention, during welding in S3, there are two types of joint arc welding for the embedded parts. One is pressure submerged arc welding, and the other is perforation plug welding. Both are welded according to the requirements of the drawings during welding.

[0018] According to the manufacturing method of the embedded parts provided by the present invention, when welding in S3, the anchor plate needs to be placed flat on the steel platform and spot-welded to the platform. After the spot welding is completed, it is cooled and then removed for grinding the weld spots.

[0019] According to the manufacturing method of the embedded parts provided by the present invention, when painting the anti-rust paint on the surface of the embedded parts in S4, it is painted twice.

[0020] In summary, the beneficial technical effects of the present invention are as follows:

[0021] By designing different methods for grinding the edges of the steel plates and sections, the edges can be better ground flat during grinding, and at the same time, it can be better adapted to the construction site during use, and then can be better placed into the reserved holes. Moreover, holes are drilled in the edges of the steel plates or sections of the embedded parts, and the drilled holes are staggered during welding, so that the anchor plate can better contact the steel plates or sections, thus facilitating the fixation during subsequent installation and making the installation more convenient. Secondly, after the embedded parts are assembled and welded, the center line is marked on the embedded parts, so that the position can be better determined during installation, thereby improving the installation accuracy.

[0022] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is the structural diagram of the fillet weld of the steel plate in the embodiment of the present invention;

[0025] Figure 2 is the structural diagram of the plug weld of the steel plate in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0031] The following combines Figure 1-2 the embodiments shown to describe the technical solution of the present invention:

[0032] A method for manufacturing an embedded part includes the following steps: S1: Cut and plane the steel plate or section steel; S2: Drill holes in the cut and planed steel plate or section steel; S3: After drilling and planing are completed, combine and weld the steel plate or section steel; S4: Apply anti-rust paint on the surface of the welded embedded part; S5: Mark the number and center line on the manufactured embedded part.

[0033] The following gives a detailed introduction to the manufacture of the embedded part to facilitate the understanding of each manufacturing step and the overall manufacturing method;

[0034] S1: Before cutting the steel plate, check the straightness of the edge of the steel plate, and the method uses a large square. The steel plate cutting and marking are carried out according to the dimensions given in the drawing, and a plate cutting machine is used for all steel plate cutting;

[0035] The section steel is cut with a toothless saw to ensure that the ends are flush. After cutting, straighten the section steel (angle steel, flat iron). The length error of the section steel cutting is <±2L / 1000 and less than 4 mm, and the flatness of the section steel end is less than 2 mm.

[0036] S2: To ensure the installation accuracy of the embedded parts and make the embedded parts close to the formwork, drill φ8mm holes at the edges of the steel plates or sections of the embedded parts during blanking. When welding the anchor bars, stagger the positions of the bolt holes;

[0037] Combine and weld the embedded parts according to the design drawings and the embedded part atlas.

[0038] There are two types of arc welding for the T-shaped joints of the embedded parts. Generally, when the diameter of the anchor bar ≤ 20mm, pressure submerged arc welding is used; when the anchor bar > 20mm, perforated plug welding is used. The specific requirements shall be constructed according to the design drawings;

[0039] When the anchor bar adopts HPB235, the size of the fillet weld leg (K) shall not be less than 0.5 times the diameter of the steel bar; when using HRB335 and HRB400 anchor bars, the weld leg (K) shall not be less than 0.6 times the diameter of the steel bar. All welds are full welds except as noted;

[0040] Pre-welding tests shall be carried out on the embedded parts before work. The welded parts are steel plates with a side length of 60mm. After passing the test after welding, mass production can be carried out;

[0041] Anti-deformation measures shall be adopted during the welding of the embedded parts. Place the anchor plate flat on the steel platform and spot-weld it to the platform. After welding and cooling, remove it and grind the weld points clean. Or limit the anchor plate and the platform with angle steel to prevent welding deformation. Weld in a skip-weld or diagonal-weld manner during welding. If the embedded parts are deformed after welding, use a self-made hydraulic straightening machine or the flame straightening method to straighten them, ensuring that the surface flatness error ≤ 1mm.

[0042] After the embedded parts are leveled and pass the inspection, remove rust on the surface and apply two coats of iron red antirust paint. When applying the paint, spraying or brushing can be used to make the painting on the surface of the embedded parts more uniform, thereby better improving the overall antirust effect.

[0043] Use a chalk line to mark the "cross" center line of the steel plate embedded parts, indicate the atlas specification number and the using part of the embedded parts, stack them neatly for standby, and place the specifications and labels in prominent positions during placement, so as to be more convenient for subsequent selection and taking, and be able to take and use them more accurately.

[0044] The manufacturing method of the embedded parts of the present invention:

[0045] The first step: Select the materials (steel plates or sections) to be used;

[0046] The second step: Process and trim the steel plates or sections. When trimming the steel plates, the straightness of the steel plate edges shall be checked before blanking the steel plates. The method is to use a large square. The steel plate blanking and marking shall be carried out according to the dimensions given in the drawings. The steel plate blanking shall all use a plate cutting machine;

[0047] Step 3: When trimming the profiled steel, use a toothless saw for cutting the profiled steel to ensure that the ends are flush. After cutting, straighten the profiled steel (angle steel, flat iron). The length error of the profiled steel cutting is < ±2L / 1000 and less than 4 mm, and the flatness of the profiled steel end is less than 2 mm;

[0048] Step 4: Drill holes at the edges of the trimmed steel plates or profiled steels. When drilling, press the embedded parts tightly against the formwork, and drill φ8 mm holes at the edges of the steel plates or profiled steels of the embedded parts during cutting;

[0049] Step 5: Combine and weld the trimmed and drilled steel plates or profiled steels, and stagger the positions of the bolt holes during welding;

[0050] Step 6: Select the type of arc welding according to requirements during welding. Generally, when the diameter of the anchor bar ≤ 20 mm, pressure submerged arc welding is used; when the anchor bar > 20 mm, plug welding through holes is used. When the HPB235 steel is used for the anchor bar, the size of the fillet weld (K) shall not be less than 0.5 times the diameter of the steel bar; when HRB335 and HRB400 steel bars are used for the anchor bar, the size of the fillet weld (K) shall not be less than 0.6 times the diameter of the steel bar, and all welds are full welds except as noted;

[0051] Step 7: When conducting pre-shift trial welding for the embedded parts, the welded part is a steel plate with a side length of 60 mm. After welding and passing the test, large-scale production can be carried out;

[0052] Step 8: Adopt anti-deformation measures during the welding of the embedded parts. Place the anchor plate flat on the steel platform and spot-weld it to the platform. After welding and cooling, remove it and grind the welds clean. Or limit the anchor plate and the platform with angle steel to prevent welding deformation. During welding, skip welding or diagonal welding is used. If the embedded parts are deformed after welding, use a self-made hydraulic straightening machine or flame straightening method for correction to ensure that the surface flatness error ≤ 1 mm;

[0053] Step 9: After the embedded parts are leveled and pass the inspection, remove rust on the surface and apply two coats of iron red antirust paint. Then use a chalk line to mark the "cross" center line of the embedded parts on the steel plate embedded parts, indicate the atlas specification number and the using part of the embedded parts, and stack them neatly for standby.

[0054] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for manufacturing an embedded part, characterized in that: The steps include: S1: Cut and flatten the steel plate or steel section; S2: Punch holes in the cut and flattened steel plates or steel sections; S3: After punching and flattening, the steel plates or steel sections are welded together; S4: Apply anti-rust paint on the surface of welded embedded parts; S5: Mark the number and center line on the manufactured embedded parts.

2. The method for making an embedded part according to claim 1, characterized in that: In S1, when the edge of the steel plate or steel section is flattened, it should be done according to the requirements of the drawing, and the straightness of the edge of the steel plate should be checked by a large square ruler method.

3. The method for making an embedded part according to claim 2, characterized in that: The S1 medium-shaped steel is flattened and cut with a toothless saw to ensure that the ends are flush, the error in the cutting length of the steel is less than ±2L / 1000 and less than 4mm, and the flatness of the ends of the steel is less than 2mm.

4. The method for manufacturing an embedded part according to claim 1, characterized in that: When punching holes on the edge of the steel plate or mold in S2, the diameter of the holes is 8 mm.

5. The method for manufacturing an embedded part according to claim 1, characterized in that: In S3, the steel plates or steel sections are welded together, and the positions of the bolt holes are staggered during welding to form an embedded part.

6. The method for manufacturing an embedded part according to claim 5, characterized in that: During the welding in S3, there are two types of arc welding of the joints of the embedded parts, one is pressure submerged arc welding, and the other is perforation plug welding. Both welding are performed according to the requirements of the drawings.

7. The method for manufacturing an embedded part according to claim 6, characterized in that: When welding is performed in S3, the anchor plate needs to be placed squarely on the steel platform and spot-welded to the platform. After the spot welding is completed, the anchor plate is cooled and removed to grind the weld points.

8. The method for manufacturing an embedded part according to claim 1, characterized in that: In the above S4, the surface of the embedded part is painted with anti-rust paint twice.

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