CN214443726U - Fixed group of converter trunnion ring body ear seat is to welded structure - Google Patents
Fixed group of converter trunnion ring body ear seat is to welded structure Download PDFInfo
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- CN214443726U CN214443726U CN202120351265.1U CN202120351265U CN214443726U CN 214443726 U CN214443726 U CN 214443726U CN 202120351265 U CN202120351265 U CN 202120351265U CN 214443726 U CN214443726 U CN 214443726U
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Abstract
The utility model discloses a fixed group welding structure of converter trunnion ring body lug seats, which comprises a converter trunnion ring body and three pairs of lug seats uniformly arranged along the circumference of the upper surface of the converter trunnion ring body, wherein each pair of lug seats comprises a first lug seat and a second lug seat, and the centers of the first lug seat and the second lug seat are both provided with shaft holes; and each pair of the shaft holes corresponding to the lug seats are connected through a full-thread fixed connecting rod. The utility model discloses mainly to the round pin shaft hole secondary operation or the rework that the traditional approach that sets up lug group welding on the trunnion ring easily appears in prior art to and the problem of the welding method of bottoming not only takes time and destroys body structure situation easily when the back chipping, use the utility model discloses can implement fast and accomplish the fixed group of converter trunnion ring body ear seat and weld, ensure the quality, improve the efficiency to for follow-up accurate equipment provides the guarantee.
Description
Technical Field
The utility model belongs to the technical field of the welding, a fixed group of converter trunnion ring body ear seat is to welded structure and welding process is related to.
Background
At present, a steel converter gradually develops towards the large-scale direction, a converter trunnion ring is one of key devices of a steel converter body system, a welding fixing lug is designed and installed on the converter trunnion ring, and then the converter trunnion ring and the converter body are connected through a pin shaft on the welding fixing lug, because the converter trunnion ring and the converter body are large in size and heavy in weight, the traditional method is adopted for further improving the installation accuracy and the welding quality of the fixing lug during manufacturing: 1. the group of fixed lug is to the installation, be exactly the position of equalling divide lug quantity and installation according to steelmaking converter tonnage on the backing ring, then two a set of design size group pairs of the lug of singleton, especially the round pin axle hole the position must guarantee to weld can the assembly connection after accomplishing round pin axle, but because the lug auxiliary fixture design after the group is to the back is not perfect enough, lead to the lug to appear the deviation when a large amount of build-up welding, the round pin axle hole can't guarantee to assemble targets in place, secondary operation or reprocess appear. 2. The welding of fixed lug, the welding divide into bottoming, packing and capping, all is shielded metal arc welding or carbon dioxide gas shielded arc welding at present commonly used, and the welding of bottom bottoming all welds in lug one side earlier, then adopts carbon arc air gouging to carry out the back chipping in one side in addition, not only wastes time but also destroys body structure easily when the back chipping.
SUMMERY OF THE UTILITY MODEL
To the pin shaft hole secondary operation or the rework that sets up lug group welding traditional method on the trunnion ring easy appearance in the background art to and the problem of backing welding method not only time-consuming and destroying body structure situation easily when back chipping, the utility model provides a fixed group of structure and welding process of converter trunnion ring body ear seat to through welding verification, the utility model discloses can implement fast and accomplish the fixed group of converter trunnion ring body ear seat and weld, ensure the quality, improve the efficiency to for follow-up accurate equipment provides the guarantee.
The utility model provides a technical problem's technical scheme as follows:
the utility model relates to a fixed group welding structure of converter supporting ring body ear seats, which comprises a converter supporting ring body and three pairs of ear seats uniformly arranged along the circumference of the upper surface of the converter supporting ring body, wherein each pair of ear seats comprises a first ear seat and a second ear seat, and the centers of the first ear seat and the second ear seat are both provided with shaft holes; and each pair of the shaft holes corresponding to the lug seats are connected through a full-thread fixed connecting rod.
Furthermore, K-shaped grooves are formed between the bottoms of the first lug seat and the second lug seat and the upper surface of the converter trunnion ring.
Furthermore, be provided with respectively on the full thread fixed link pole of first ear seat and second ear seat both sides and adjust retaining ring, be provided with lock nut on the full thread fixed link pole in every regulation retaining ring outside respectively to be connected first ear seat or second ear seat and full thread fixed link pole fixedly through these two lock nut.
Furthermore, heating belts are respectively arranged on the upper surfaces of the converter support rings on the two sides of the first lug seat and the second lug seat.
Furthermore, heating belts are respectively arranged on the upper surfaces of the converter support rings on the two sides of the first lug seat and the second lug seat.
A welding process for a converter trunnion ring body lug fixing group to a welding structure based on the technical scheme comprises the following steps:
step one, preparing before welding;
1.1), the welding equipment is: the WS-400T manual argon arc welding and the manual shielded metal arc welding are combined to use a welding machine, the manual argon arc welding adopts a carbon steel welding wire ER50-6, the gas purity is more than or equal to 99.99 percent, and the manual shielded metal arc welding adopts a welding rod model E5015; the Nb-500P digital pulse gas shielded welding machine is in direct current positive connection, the welding material is solid welding wire ER50-6, and the purity of carbon dioxide gas is more than or equal to 99.8%;
1.2), welding position: symmetrically welding a horizontal K-shaped groove;
1.3), cleaning before welding: the welding position area and the welding wire do not have oil stain, an oxide layer, moisture and the like, the metal luster needs to be exposed, oxyacetylene flame is used for removing the moisture and the oil inside and outside the groove, and then the groove is polished by using abrasive cloth or a grinding wheel machine for derusting;
1.4), welding technical requirements: one-side welding and two-side forming are carried out, a surfacing layer fuses base materials, and a welding seam cannot have any welding defects;
1.5), weldment material: 16 MnR;
1.6), groove size: a horizontal K-shaped groove;
1.7), auxiliary facilities: template, magnifier, face mask, gloves, scarfing hammer, chisel, file, wire brush, sand paper, steel ruler, level bar, movable spanner, straight grinder, angle grinder, wire pliers, steel saw blade, labor protection article;
1.8), welding process parameters: determining welding parameters according to welding equipment, welding wire specifications and welding requirements;
step two, welding the lug seat;
2.1), respectively positioning each pair of lug seats which are connected into a whole through a full-thread fixed connecting rod on the upper surface of the converter trunnion ring body, reserving bottoming gaps, and fixing the lug seats on the converter trunnion ring body in a point mode, and then heating the positions of the lug seats to reach preheating temperature through a heating belt;
2.2), firstly, backing welding the outer side of a first lug seat of each pair of lug seats by manual argon arc welding, then backing welding the inner side of a second lug seat, forming single-side welding and double-side forming through a reserved gap, and then directly backing welding the inner side of the first lug seat and backing welding the outer side of the second lug seat after detecting that a welding seam formed on the front side and the back side has no welding defects;
2.3) after the bottom layer is detected to be flawless by welding, adopting manual welding rod electric arcs to sequentially weld the inner and outer two to five filling layers of each first lug seat and each second lug seat according to the fact that the designed groove gap of the lug seats is smaller and the lug seats are fillet welds;
2.4) after welding each layer of the two to five filling layers and detecting that no welding defect exists, carrying out large-area surfacing on the residual filling and covering layers by adopting carbon dioxide gas shielded welding, and ensuring that the interlayer temperature is equal to or higher than the preheating temperature in the welding process;
2.5) after all welding is finished, carrying out welding annealing treatment on the welding seams of each pair of lug seats and the local part of the converter backing ring body so as to release stress conveniently, wrapping each pair of lug seat areas by adopting heat preservation cotton, cooling to room temperature slowly, then grinding the surfaces of the welding seams by adopting a manual angle grinder so as to enable the surfaces of the angle welding seams to be level and in arc transition, and then delivering for use after the inspection is qualified.
Further, the parameters of manual argon arc welding of the bottom layer are as follows: the welding wire is ER50-6 with the model of phi 2.5mm, the welding current is 120-160A, the arc voltage is 23 +/-1V, and the welding speed is 15 +/-1 cm/min; the parameters of the manual shielded metal arc welding with the two filling layers are as follows: the welding rod model is E5015 with phi of 3.2mm, the welding current is 90-120A, the arc voltage is 32 +/-1V, and the welding speed is 20 +/-1 cm/min; the parameters of the manual shielded metal arc welding with three to five filling layers are as follows: the welding rod model is E5015 with phi 4.0mm, the welding current is 160-180A, the arc voltage is 40 +/-1V, and the welding speed is 20 +/-1 cm/min; the parameters of the carbon dioxide arc welding of the residual filling layer are as follows: the solid welding wire is ER50-6 with the model of phi 1.2mm, the welding current is 260-280A, the arc voltage is 26-28V, and the welding speed is average 90 g/min; the parameters of the carbon dioxide arc welding of the cover layer are as follows: the solid welding wire is ER50-6 with the model of phi 1.2mm, the welding current is 280-320A, the arc voltage is 28-32V, and the welding speed is 90-140 g/min.
Further, the processing bevel angles of both sides of the first ear seat or the second ear seat are both 45 degrees.
Further, the preheating temperature to which the ear seat positions are heated by the heating tape is 150-.
Furthermore, the reserved bottoming gap between the lug seat and the upper surface of the converter backing ring body is 0.5-1.5 mm.
Compared with the prior art, fixed group of converter backing ring body ear seat to welded structure and welding process, can effectively solve the problem of converter backing ring upper ear seat butt welding, not only safe easy operation, welding quality is stable, investment cost is lower, can not harm the weldment body moreover, has satisfied on-the-spot actual demand, work efficiency is high.
Drawings
FIG. 1 is a schematic view of a structure of a converter trunnion ring body ear seat fixing assembly welding structure of the present invention;
FIG. 2 is an exploded view of the welded structure of the fixed assembly of the ear seat of the trunnion ring body of the converter of the present invention;
FIG. 3 is a schematic view of the bottom layer and two to five filling layers when the first ear mount or the second ear mount of the present invention is welded;
in the figure: 1. a converter trunnion ring body; 2. an ear mount; 2A, a first ear mount; 2B, a second ear mount; a K-groove; 22. a shaft hole; 3. a connecting rod is fixed by full threads; 4. adjusting the fixed check ring; 5. a lock nut; 6. and heating the belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "upper", "lower", "left", "right", "front", "rear", and the like used in the specification and claims of the present disclosure are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships are changed accordingly; the terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Example 1:
as shown in fig. 1 to 3, the utility model relates to a fixed pair of welded structures of converter trunnion ring body ear base, which comprises a converter trunnion ring body 1 and three pairs of ear bases 2 uniformly arranged along the circumference of the upper surface of the converter trunnion ring body 1, wherein each pair of ear bases 2 comprises a first ear base 2A and a second ear base 2B correspondingly arranged in parallel at intervals, and the centers of the first ear base 2A and the second ear base 2B are both provided with shaft holes 22; the corresponding shaft holes 22 of each pair of the ear seats 2 are connected and fixed through the full-thread fixed connecting rod 3.
In this embodiment, a K-shaped groove 21 is formed between the bottom of each of the first lug seat 2A and the second lug seat 2B and the upper surface of the converter trunnion ring 1.
In this embodiment, when every pair of ear seat 2 sets up, be provided with respectively on the full thread fixed connection pole 3 of first ear seat 2A and second ear seat 2B both sides and adjust retaining ring 4, be provided with lock nut 5 on every full thread fixed connection pole 3 of adjusting the retaining ring 4 outside respectively, and be connected first ear seat 2A or second ear seat 2B and full thread fixed connection pole 3 fixedly through these two lock nut 5, with play to every to the connection of ear seat 2 fixed, also can control every deformation that expend with heat and contract with cold when welding of ear seat 2 and converter trunnion ring body 1 simultaneously.
In this embodiment, in order to achieve a better welding effect, the upper surfaces of the converter trunnion rings 1 on both sides of the first lug seat 2A and the second lug seat 2B are respectively provided with a heating band 6.
During manufacturing, the first lug seat 2A and the second lug seat 2B respectively enable the shaft hole 22 and the groove 21 to meet the process specification requirements through machining, and the horizontal plane at the bottom of the groove and the horizontal plane of the converter trunnion ring body 1 meet the pairing standard; the length of the full-thread fixed connecting rod 3 is larger than the distance between the outer sides of the two shaft holes 22 after the first lug seat 2A and the second lug seat 2B are assembled in a standard mode, and the normal installation of the adjusting fixed check ring 4 and the lock nut 5 and the requirements of the first lug seat 2A and the second lug seat 2B on size and welding deformation control are guaranteed; each heating band 6 is used for assisting the welding process of the converter trunnion ring body 1 and each first lug seat 2A and each second lug seat 2B. During connection, as shown in fig. 1, firstly, the adjusting fixed check ring 4 and the lock nut 5 are respectively installed on the inner sides of the shaft holes 22 of the first lug seat 2A and the second lug seat 2B, then the adjusting fixed check ring 4 and the lock nut 5 which are arranged are connected through the shaft holes 22 by the full-thread fixed connecting rod 3, and are adjusted and locked according to the size, then the adjusting fixed check ring 4 and the lock nut 5 are installed on the outer sides of the first lug seat 2A and the second lug seat 2B, and are fixed and locked according to the designed size to form the integral lug seat 2, the bottom surface of the groove of the lug seat 2 is connected on the specified horizontal surface of the converter support ring body 1 in a facing manner, and each heating belt 6 is respectively laid on the converter support ring body 1 around each pair of lug seats 2, and welding is carried out after the fixed temperature of the welding process is reached.
Example 2:
a welding process for a converter trunnion ring body lug fixing group to a welding structure based on embodiment 1 comprises the following steps:
step one, preparing before welding;
1.1), the welding equipment is: the WS-400T manual argon arc welding and the manual shielded metal arc welding are combined to use a welding machine, the manual argon arc welding adopts a carbon steel welding wire ER50-6, the gas purity is more than or equal to 99.99 percent, and the manual shielded metal arc welding adopts a welding rod model E5015; the Nb-500P digital pulse gas shielded welding machine is in direct current positive connection, the welding material is solid welding wire ER50-6, and the purity of carbon dioxide gas is more than or equal to 99.8%;
1.2), welding position: symmetrically welding a horizontal K-shaped groove;
1.3), cleaning before welding: the welding position area and the welding wire do not have oil stain, an oxide layer, moisture and the like, the metal luster needs to be exposed, oxyacetylene flame is used for removing the moisture and the oil inside and outside the groove, and then the groove is polished by using abrasive cloth or a grinding wheel machine for derusting;
1.4), welding technical requirements: one-side welding and two-side forming are carried out, a surfacing layer fuses base materials, and a welding seam cannot have any welding defects;
1.5), weldment material: 16 MnR;
1.6), groove size: the angle of the processing groove on the two sides of each first lifting lug or each second lifting lug is 45 degrees;
1.7), auxiliary facilities: templates, magnifying glasses, masks, gloves, scarfing hammers, chisels, files, wire brushes, sandpaper, steel rulers, leveling rulers, adjustable wrenches, straight grinders, angle grinders, wire pliers, steel saw blades, labor protection articles (work clothes, shoes, hats, planoscopes);
1.8), welding process parameters: determining welding parameters according to welding equipment, welding wire specifications and welding requirements;
carbon dioxide arc welding
Manual argon arc welding
Manual shielded metal arc welding
Step two, welding the lug seat;
2.1), respectively positioning and reserving a bottoming gap (the reserved bottoming gap is generally 0.5-1.5mm) on the upper surface of the converter trunnion ring body 1 and fixing the trunnion seats 2 which are connected into a whole by the full-thread fixed connecting rod 3 on the converter trunnion ring body 1 in a point mode, and then heating the positions of the trunnion seats 2 by a heating belt 6 to reach a preheating temperature, wherein the preheating temperature is generally 150-200 ℃;
2.2), as shown in fig. 3, the figure in the figure is each welding layer welded in sequence, firstly, the manual argon arc welding is adopted to perform backing welding on the outer side of the first lug seat 2A of each pair of lug seats 2, then, backing welding is performed on the inner side of the second lug seat 2B, single-side welding and double-side forming are formed through a reserved gap, then, after the welding seam formed on the front side and the back side is detected to have no welding defect, the backing welding is directly performed on the inner side of the first lug seat 2A, and then, the backing welding is performed on the outer side of the second lug seat 2B; in the welding procedure, the lug seat fixing and assembling welding structure of the converter trunnion ring body can control the thermal expansion and cold contraction welding deformation and can save bottom back chipping and damage to a weldment body;
2.3) after the bottom layer welding detection is flawless, because the designed groove gap (0.5-1.5mm) of the lug seat is smaller and is a fillet weld, the welding rod can meet the bead welding angle of the fillet weld by adopting manual shielded metal arc welding, so that two to five filling layers are welded on the inner side and the outer side of each first lug seat 2A and each second lug seat 2B in sequence by adopting manual shielded metal arc welding;
2.4) after welding each layer of the two to five filling layers and detecting that no welding defect exists, because the bevel angle at the moment is just suitable for the application of the welding angle of the carbon dioxide gas shielded welding, the rest filling and cover surface layers are subjected to large-area surfacing by adopting the carbon dioxide gas shielded welding, and in the welding process, no matter what welding method is used, the interlayer temperature is required to be equal to or more than the preheating temperature;
2.5) after all welding is finished, welding annealing treatment is carried out on the welding seams of each pair of lug seats 2 and the local part of the converter trunnion ring body 1, stress is convenient to release, heat insulation cotton is adopted to wrap the area of each pair of lug seats 2 and slowly cool the area to room temperature, then a manual angle grinder is adopted to grind the surfaces of the welding seams, so that the surfaces of the angle welding seams are flush and in arc transition, then flaw detection is carried out to verify the welding quality, the welding quality is qualified once and is checked and accepted by field actual assembly of a sample plate, and the welding is delivered for use after the matching accurate assembly requirement of the lug seats is completely met.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (5)
1. A converter trunnion ring body lug seat fixing and pairing welding structure is characterized by comprising a converter trunnion ring body (1) and three pairs of lug seats (2) uniformly arranged along the circumference of the upper surface of the converter trunnion ring body (1), wherein each pair of lug seats (2) comprises a first lug seat (2A) and a second lug seat (2B), and the centers of the first lug seat (2A) and the second lug seat (2B) are respectively provided with a shaft hole (22); the corresponding shaft holes (22) of each pair of the ear seats (2) are connected through a full-thread fixed connecting rod (3).
2. The fixed lug seat pairing welding structure of the converter trunnion ring body according to claim 1, wherein a K-shaped groove (21) is formed between the bottom of each of the first lug seat (2A) and the second lug seat (2B) and the upper surface of the converter trunnion ring body (1).
3. The fixed pair of welding structures of converter trunnion ring body ear seat according to claim 1 or 2, characterized in that the full thread fixed connecting rods (3) at both sides of the first ear seat (2A) and the second ear seat (2B) are respectively provided with an adjusting fixed check ring (4), the full thread fixed connecting rods (3) at the outer side of each adjusting fixed check ring (4) are respectively provided with a lock nut (5), and the first ear seat (2A) or the second ear seat (2B) and the full thread fixed connecting rods (3) are connected and fixed through the two lock nuts (5).
4. The fixed pairing welding structure of the converter trunnion ring body lug seat according to claim 1 or 2, characterized in that the upper surfaces of the converter trunnion ring body (1) at the two sides of the first lug seat (2A) and the second lug seat (2B) are respectively provided with a heating band (6).
5. The fixed pairing welding structure of the converter trunnion ring body lug seat according to claim 3, characterized in that the upper surfaces of the converter trunnion ring body (1) at the two sides of the first lug seat (2A) and the second lug seat (2B) are respectively provided with a heating belt (6).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981037A (en) * | 2021-02-05 | 2021-06-18 | 安徽马钢设备检修有限公司 | Fixed assembly welding structure and welding process for lug seat of converter trunnion ring body |
| CN114434032A (en) * | 2022-01-27 | 2022-05-06 | 山西建投装备制造有限公司 | Assembly welding method for connecting lug sleeves of main limbs of standard section of tower crane |
-
2021
- 2021-02-05 CN CN202120351265.1U patent/CN214443726U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981037A (en) * | 2021-02-05 | 2021-06-18 | 安徽马钢设备检修有限公司 | Fixed assembly welding structure and welding process for lug seat of converter trunnion ring body |
| CN114434032A (en) * | 2022-01-27 | 2022-05-06 | 山西建投装备制造有限公司 | Assembly welding method for connecting lug sleeves of main limbs of standard section of tower crane |
| CN114434032B (en) * | 2022-01-27 | 2023-08-22 | 山西建投装备制造有限公司 | Tower crane standard joint main limb connection earmuff assembly welding method |
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