CN112705872A - Production process of stainless steel liquid tank - Google Patents
Production process of stainless steel liquid tank Download PDFInfo
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- CN112705872A CN112705872A CN202011610795.XA CN202011610795A CN112705872A CN 112705872 A CN112705872 A CN 112705872A CN 202011610795 A CN202011610795 A CN 202011610795A CN 112705872 A CN112705872 A CN 112705872A
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 22
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- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 166
- 238000010438 heat treatment Methods 0.000 claims abstract description 51
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a production process of a stainless steel liquid tank, which comprises the following steps of barrel assembly → installation of a wave breaker → middle circular seam P + T → installation of a heating pipeline → welding of the wave breaker → repair welding of the wave breaker → installation of accessories and internal welding of the accessories → air test of the wave breaker → assembly of end sockets → end socket finishing, installation of an overflow box → welding of the end socket P + T → flaw detection → welding of barrel accessories → welding of the heating pipeline → repair welding of the heating pipeline and air test → bracket, installation of omega → bracket, finishing of omega → bracket, welding of omega → pipeline assembly → installation of accessory welding. The invention has the beneficial effects that: the cylinder body team work station is not installed through the end socket, two sides of the tank body are opened to form an open space, and potential safety hazards and occupational health threats brought by operation in the tank are effectively solved; the assembly of the travelling mechanism on the rivet welding line is cancelled, the problem of difficult assembly of pipelines widely existing in the industry is solved by utilizing a pipeline assembly tool, and the production efficiency of the rivet welding line is greatly improved.
Description
Technical Field
The invention relates to the technical field of tank truck production processes, in particular to a production process of a stainless steel liquid tank.
Background
The tank truck is a vehicle for transporting and transporting oil materials, and the tank body is generally made of carbon steel plates and can also be made of glass fiber reinforced plastics, stainless steel, plastics and other materials. All the oil tank trucks can be designed into chemical industrial trucks and various heating and heat-insulating series tank bodies, all the oil tank trucks can be provided with computer oiling machines, the tonnage of a user can be selected in a wide range so as to meet the requirements of the user, and a plurality of wave-preventing partition plates are arranged in the tank bodies. High-pressure gas leakage test is adopted, so that the tank body has the characteristics of high strength, stable gravity center, safe and stable vehicle carrying and the like.
At present, after the end sockets are installed on the barrel team stations, the inner welding is changed into the in-tank closed welding operation, and potential safety hazards and occupational health threats exist.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned conventional problems.
Therefore, the technical problem solved by the invention is as follows: provides a production process of a stainless steel liquid tank, which eliminates the potential safety hazard in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme: a production process of a stainless steel liquid tank comprises the following steps of barrel assembly → installation of a wave breaker → P + T → installation of a heating pipeline → welding of the wave breaker → repair welding of the wave breaker → installation of accessories and internal welding of the accessories → test gas of the wave breaker → head assembly → head trimming, overflow tank installation → P + T welding of the head → fault detection → barrel accessory welding → heating pipeline welding → repair welding of the heating pipeline and test gas → bracket, omega installation → bracket, omega trimming → bracket, omega welding → pipeline assembly → installation and welding of accessories.
Preferably, the cylinder assembly comprises the following steps of detecting the left-right height difference of the assembly roller machine by using a level gauge, coating a film to adjust the height of a roller way, and cleaning burrs on the opposite sides of the assembly before assembly; uniformly wrenching two sides of the variable cross section to be assembled along the circumferential direction by using a wrenching tool so that the variable cross section is equal to the circumferences of the front barrel and the rear barrel, rechecking the material, and determining whether the welding wire meets the requirement; adjusting the positions of the front and rear cylinders by taking the variable cross section and the reserved central line at the bottom of the cylinder as references to enable the front and rear cylinders to be tightly attached to the variable cross section, and trimming the position with larger misalignment by using a rubber hammer; if the tank internal circular seam riveting point has penetration, a paper adhesive tape is used for protecting the welding line within 20mm, and a thousand impellers are used for polishing and leveling and then an air pipe is used for blowing off metal dust in the butt joint.
Preferably, the installation of the breakwater comprises the following steps of placing the barrel body on a carrier roller, and drawing a position line of a breakwater base plate in the barrel body according to the drawing size by taking the front end face of the barrel body as a reference; the position line of the breakwater backing plate is used as a reference, and the assembled breakwater backing plate is installed and fixed by spot welding; taking the reserved center line position at the bottom of the barrel body as a reference, installing an L plate of the assembled type breakwater according to the center line position of a cushion plate of the assembled type breakwater, and performing auxiliary installation on a position with a larger gap by using a jack; installing upper and lower connecting beams of the assembled type wave-proof plate, fastening the stiffening beam by using a stainless steel bolt, and tightening a thread at the position by using a TIG spot welding screw after locking to prevent the bolt from loosening; and (5) taking the L-shaped breakwater plate as a reference, installing the breakwater liquid passing hole reinforcing rib and fixing by spot welding according to the figure.
Preferably, the installation of the heating pipeline comprises the following steps of connecting a front point and a rear point by an ink fountain and snapping a line according to the reference of a reserved central point on the front end face and the rear end face of the bottom of the cylinder, and drawing a positioning line of the heating pipeline from the snapping line to two sides according to the drawing size requirement; measuring the length from the end face of the front cylinder to the variable cross section and the welding seam of the front cylinder by taking the end face of the front cylinder as a reference, cutting the heating pipeline by using a grinding machine according to the measured value, and placing the cut part for later use; the heating pipeline is positioned by clinging to the ink fountain line and is fixed by TIG welding spot welding; the butt joint of the heating pipelines meets the pattern requirement and is arranged in parallel; wiping the edges of the two sides of the groove with vegetable sponge to be clean without oil stain, paint and dust impurities; and 6 points of the heating pipe are uniformly spot-welded in the middle of the weld joint of the breakwater.
Preferably, the end socket assembly comprises the following steps of polishing the end socket of the barrel and the end face of the barrel by using a handheld polishing machine, cleaning the interior of the barrel, removing surface impurities, and preventing impurities from scratching the barrel; measuring and calculating the circumference of the cylinder end socket, the roundness and the flatness of the end face, and determining whether the technical requirements are met; pre-pairing: adjusting the size of the gap according to the center line reserved at the bottom of the cylinder to the center position of the end enclosure of the cylinder, and performing pre-spot welding on the center and the nearby range; checking whether the assembly conditions in the pre-spot welding range meet requirements, otherwise, damaging the welding points by using a prying shovel, and assembling again; starting from the center of the bottom of the welding line, spot welding is performed on two sides for fixation, and a prying shovel is used for adjusting the position where the assembly gap is large until the welding line is completely spot-welded. And after all the operation contents are finished, the operator enters the shop to take down the lining mold.
Preferably, the end socket finishing comprises the following steps of determining the position of a clamping jaw disc mounting seat by using a clamping jaw disc center model by taking the mounting center position of a clamping jaw disc marked by a front end socket and a rear end socket as a reference, and marking by using a marker pen; fully welding a clamping jaw disc mounting seat on the front and rear sealing heads by taking the calibration position as a reference, selecting a clamping jaw disc with a proper specification for mounting, and fastening a clamping jaw disc pre-mounting bolt; and (4) installing an overflow box, positioning the position of the overflow box according to the central line of the tank top, using a tool and a tightening belt to assist in installing the overflow box, and not installing an overflow box cover plate.
Preferably, the omega installation comprises the steps that the reinforcing rib is segmented according to the drawing size, a saw blade is required to be used for cutting, burrs and oxidation are not generated on the cutting edge, and the cutting surface is flat; the omega reinforcing rib connecting plate is prewelded on the middle reinforcing rib, and the inner side of the end part is fully welded; positioning reinforcing ribs, and ensuring the annular positioning precision of the bottom reinforcing ribs by symmetrical spot welding; the butt joint between the reinforcing ribs requires even gaps, and the reinforcing ribs are polished to be flush after full welding.
Preferably, the pipeline assembly comprises the following steps of connecting the support frame and the support leg connecting plate by using corresponding tools according to different sizes of the tank body; polishing the oxidation slag on the surface of the pipeline and the cut pipeline by using a polishing machine; positioning the position of the pipeline according to a technical drawing, assembling a pipeline flange, simulating an actual assembly effect according to the bolt connection requirement, and symmetrically spot-welding after the bolts are fastened; and simulating the position of the pipeline hanger by using a tool, and positioning the lower end face of the pipeline.
Preferably, the repair welding and gas testing of the heating pipeline comprises the following steps of: checking whether obvious air leakage points exist in the welding seams of the heating pipes, the welding seams of the heating grooves and the welding seams of the threaded steam pipes, and performing timely repair welding on the air leakage points; sealing: connecting the gas test joint with a threaded steam pipe, and sealing the joint by using a sealing adhesive tape and a sealant to prevent gas leakage; testing water: filling compressed air into the water testing tool from the gas testing joint, connecting the water testing tool joint into a heating pipeline, and marking a water leakage point; and (3) post-treatment: carrying out slotting repair welding on the marked water leakage points by using a back gouging machine, and repeating the gas testing step after the repair welding is finished until all the gas leakage points are completely repaired; the overflow box blows air from the outside inwards, soap liquor is used for detecting the inside of the overflow box, repair welding is carried out on a leakage point, and the repair welding mode is the same as that of repair welding of the heating pipeline.
The invention has the beneficial effects that: the cylinder team work station is not installed through the head, and jar body both sides are opened, form open space, have effectively solved potential safety hazard and occupational health threat that the interior operation of jar brought.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic view of a flow structure of a stainless steel liquid tank production process provided by the invention.
Fig. 2 is another flow structure schematic diagram of the stainless steel liquid tank production process provided by the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to the schematic diagrams of fig. 1-2, the schematic diagram provides a flow structure of a stainless steel liquid tank production process in the embodiment. The process provided by the embodiment is to cancel the operation content of head installation in the cylinder team operation. The reason for the change is as follows: after the cylinder team station is used for installing the end sockets, the inner welding is changed into the in-tank closed welding operation, and potential safety hazards and occupational health threats exist. After the change, because of the head is not installed, jar body both sides are opened, form open space, have effectively solved potential safety hazard and occupational health threat that the interior operation of jar brought. Secondly, the assembly of a walking mechanism on a rivet welding line is cancelled, and the problem of difficult assembly of pipelines widely existing in the industry is solved by utilizing a pipeline assembly tool. The production efficiency of the rivet welding line is greatly improved.
The process flow comprises the following steps: barrel assembly → installation of a wave-proof plate → middle circular seam P + T → installation of a heating pipe → welding of the wave-proof plate → gas testing of the wave-proof plate → seat ring of a manhole, installation of flange accessories → welding of accessories → installation of a sealing head → sealing head P + T → flaw detection → automatic welding of the heating pipe → gas testing of a heating pipeline → installation of omega → automatic welding of omega → repair welding → installation of bracket → welding of bracket → repair welding → pipeline assembly → combination of tank frames.
More specifically, the method comprises the following steps:
(1) and (6) barrel assembly.
Detecting the left-right height difference of the assembly roller machine by using a level gauge, coating a film to adjust the height of a roller way, and cleaning burrs on the opposite sides of the assembly before assembly to prevent welding forming from being influenced;
edge pulling: uniformly wrenching two sides of the variable cross section to be assembled along the circumferential direction by using a wrenching tool so that the variable cross section is equal to the circumferences of the front barrel and the rear barrel, rechecking the material, and judging whether the welding wire meets the requirement or not;
adjusting the positions of the front and rear cylinders by taking the variable cross section and the reserved central line at the bottom of the cylinder as references to enable the front and rear cylinders to be tightly attached to the variable cross section, and trimming the position with larger misalignment by using a rubber hammer;
performing self-melting spot welding by using a TIG welding gun; remarking: the barrel assembly requires that longitudinal joints between barrels are staggered by more than or equal to 100mm, the distance between the end socket joint and the barrel longitudinal joint is more than or equal to 100mm, and the assembly is parallel and level;
if the tank internal circular seam riveting point has penetration, a paper adhesive tape is used for protecting the welding line within 20mm, and a thousand impellers are used for polishing and leveling and then an air pipe is used for blowing off metal dust in the butt joint.
(2) And (6) installing a wave-proof plate.
Drawing a line: placing the barrel on a carrier roller, and drawing a position line of the washboard pad inside the barrel according to the drawing size by taking the front end face of the barrel as a reference;
the installation steps of the assembled breakwater are as follows:
the position line of the breakwater backing plate is used as a reference, and the assembled breakwater backing plate is installed and fixed by spot welding;
taking the reserved center line position at the bottom of the barrel body as a reference, installing an L plate of the assembled type breakwater according to the center line position of a cushion plate of the assembled type breakwater, and using a jack to perform auxiliary installation on a position with a larger gap if necessary;
installing upper and lower connecting beams of the assembled wave-proof plate, fastening the reinforcing beam by using a stainless steel bolt, wherein the torque force is required to be 200 plus 280N.m, and tightening a thread at the screwed part by using a TIG spot welding screw after locking to prevent the bolt from loosening;
and (5) taking the L-shaped breakwater plate as a reference, installing the breakwater liquid passing hole reinforcing rib and fixing by spot welding according to the figure.
The assembly type surfboard base plate is spliced with the same surfboard, the requirement of the same surfboard does not exceed one connector, and the butt joint gap is less than or equal to 1 mm.
(3) The middle circular seam is P + T.
Pretreatment: polishing the welding spot by using a handheld polishing machine to remove iron oxide scales near the welding spot, and simultaneously checking whether the gas purity, various parameters of the welding machine and the flow of protective gas are normal or not;
setting welding parameters (see condition setting books) according to the thickness of a material plate before welding by using an automatic P + T welding machine, and manually protecting a welding position at the welding back by using a back gas shield;
the welding starting and arc stopping are carried out in a coverage area of 500mm above the tank top, a back-starting protection device needs to be started in advance during welding, the welding seam is ensured to be straight, the back surface is completely penetrated, no air holes, slag inclusion, non-fusion and other defects exist, and the color of the welding area is silvery white;
and (3) post-treatment: and inspecting the welding seam, if an impermeable area is found on the back surface, treating the impermeable area by using a back gouging machine, and performing repair welding by using TIG (tungsten inert gas).
(4) And (6) installing a heating pipe.
Drawing a line: connecting a front point and a rear point by using an ink fountain and snapping a line according to the preset central point of the front end face and the rear end face of the bottom of the cylinder body as a reference, and drawing a heating pipeline positioning line from the snapping line to two sides according to the drawing size requirement;
cutting: measuring the length from the end face of the front cylinder to the variable cross section and the welding seam of the front cylinder by taking the end face of the front cylinder as a reference, cutting the heating pipeline by using a grinding machine according to the measured value, and placing the cut part for later use;
the heating pipeline is positioned by clinging to the ink fountain line and fixed by TIG welding spot welding, the spot welding length is 2-3mm, the distance is 300mm, and the spot welding gap between the heating pipe and the tank body is less than or equal to 1 mm; the butt joint of the heating pipelines meets the pattern requirement and is arranged in parallel;
wiping the edges of the two sides of the groove with vegetable sponge to be clean without impurities such as oil stain, paint, dust and the like;
and (3) spot-welding 4 points on two sides of the heating pipe at the spot welding position of the breakwater uniformly, wherein the spot welding distance is 20-30 mm.
(5) And (4) installing and finishing the seal head.
Pretreatment: taking down the lining die, polishing the end socket of the cylinder body and the end face of the cylinder body by using a handheld polishing machine, cleaning the interior of the cylinder body, removing surface impurities, and preventing impurities from scratching the cylinder body; measuring and calculating the circumference of the cylinder end socket, the roundness and the flatness of the end face, and determining whether the technical requirements are met;
pairing: adjusting the size of the gap according to the center position of the end enclosure of the reserved center line at the bottom of the cylinder, and performing pre-spot welding on the center and the range of 400 plus materials of 500mm nearby;
checking: checking whether the assembly conditions in the pre-spot welding range meet requirements, otherwise, damaging the welding points by using a prying shovel, and assembling again;
pairing: starting from the bottom center of the welding line, spot welding is conducted on two sides for fixing, and a prying shovel can be used for adjusting the position with a large assembly gap when necessary until welding seam spot welding is complete.
The mounting center position of a claw disc marked by a front seal head and a rear seal head is taken as a reference, the position of a claw disc mounting seat is determined by a claw disc center model, and the mark is marked by a marker pen;
and taking the calibration position as a reference, fully welding the clamping jaw disc mounting seat on the front and rear sealing heads, selecting a clamping jaw disc with a proper specification for mounting, and fastening a clamping jaw disc pre-mounting bolt.
(6) And (5) omega installation.
The omega reinforcing ribs are segmented according to the drawing size, a saw blade is required to be used for cutting, burrs and oxidation are avoided at the cutting edge, and the cutting surface is flat;
the omega reinforcing rib connecting plate is prewelded on the middle reinforcing rib, and the inner side of the end part is fully welded;
positioning reinforcing ribs, and ensuring the annular positioning precision of the bottom reinforcing ribs by symmetrical spot welding;
the butt joint between the reinforcing ribs requires even gaps, and the reinforcing ribs are polished to be flush after full welding.
(7) And (6) assembling the pipeline.
Aiming at different tank body sizes, corresponding tools are used for connecting the tank bodies between the bracket and the supporting leg connecting plate;
polishing the oxidation slag on the surface of the pipeline and the cut pipeline by using a polishing machine;
positioning the position of a pipeline according to a technical drawing, assembling a pipeline flange, simulating an actual assembly effect according to the bolt connection requirement, symmetrically spot-welding after fastening a bolt, and ensuring that the butt joint gap of the pipeline is less than or equal to 2 mm;
and simulating the position of the pipeline hanger by using the tool, and positioning the lower end face position of the pipeline.
The cylinder assembly comprises a front cylinder, a variable cross section and a rear cylinder. The installation of the breakwater comprises a spinning type breakwater, an assembled breakwater and a cleaning ring, wherein round steel of the oil passing hole is installed, and a crosspiece of the assembled breakwater is not installed. The middle circular seam P + T comprises middle two circular seams in plasma welding. The heating pipe is installed by riveting the heating pipeline and the tank body by using a special machine. The welding of the breakwater comprises welding of the connecting position between the breakwater and the barrel body (comprising a cleaning ring). The step of air test of the breakwater comprises the step of carrying out 0.6-0.8MPa inspection on the middle interlayer of the breakwater through an air test hole at the bottom of the breakwater. The installation of accessories such as a manhole seat ring, a flange and the like comprises the installation of a manhole, a flange, an overflow box and a middle crosspiece of an assembled type wave-proof plate. The accessory welding comprises manhole welding, flange welding, overflow box welding, heating pipe end heating box welding and internal welding oil hole position repair welding. The seal head installation comprises the steps that the front seal head and the rear seal head are assembled by using special machines and installed by using TIG spot welding, and the gap is guaranteed to meet the plasma welding requirement. The seal heads P + T comprise front and rear seal head circular seams which are welded by plasma. And flaw detection comprises nondestructive detection of key welding seams of the tank body according to national standards. The automatic welding of the heating pipe comprises double-gun welding of the heating pipe. The heating pipeline gas testing comprises heating pipeline gas testing, and the side leakage detection is carried out by inflating 0.8MPA pressure from the air inlet hole of the heating pipeline. The omega installation comprises the step of spot welding and positioning the three-section omega reinforcing rib of the tank body by using a special machine. Omega welding includes omega reinforcement using double robot and double gun welding. The repair welding comprises repair welding of the position of the reinforcing rib joint. The bracket installation comprises the step that the bracket is positioned by using an integral tool, so that the relative position accuracy of a bracket installation hole and the bracket levelness requirement are ensured. The bracket welding comprises the step that the bracket is welded by using a double-machine coordination robot. And the repair welding comprises the repair welding of the bracket and the inclined strut joint position as well as the reinforcing plate at the end part of the bracket. The accessory assembly comprises the installation of tank accessories: the embedded parts, the lamp bracket, the downpipe of the branch overflow tank, the crawling ladder and the pipeline are preassembled. The tank frame combination comprises the hoisting and combination of the tank body and the frame before the assembly is on line.
The differences from the prior art can be referred to in table 1 below.
As can be seen from table 1 above, in this embodiment, the operation content of mounting the head in the cylinder gang operation is eliminated. The reason for the change is as follows: after the cylinder team station is used for installing the end sockets, the inner welding is changed into the in-tank closed welding operation, and potential safety hazards and occupational health threats exist. After the change, because of the head is not installed, jar body both sides are opened, form open space, have effectively solved potential safety hazard and occupational health threat that the interior operation of jar brought. And the assembly of a travelling mechanism on a rivet welding line is cancelled, and the problem of difficult assembly of pipelines widely existing in the industry is solved by utilizing a pipeline assembly tool. The production efficiency of the rivet welding line is greatly improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are to be considered as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims shall not be construed as limiting the claim as so far as they are concerned.
It should be further understood that, the present invention is described by the embodiments, and the embodiments are only provided for the purpose of providing clear and complete descriptions for the technical solutions proposed by the claims of the present invention, that is, the explanations of the claims, so that when judging whether the technical solutions described in the present specification are sufficiently disclosed, the core meanings of the solutions defined by the claims should be fully considered, and other technical problems that are irrelevant to the solution of the core technical problems proposed by the embodiments are necessarily present in the specification, and the corresponding technical features and technical solutions are not referred to the meanings of the embodiments, but belong to unnecessary technical features, so that the present invention can be implemented by referring to the implicit disclosures, and those skilled in the art can fully combine the prior art and the common knowledge, and therefore, no detailed description is necessary.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A production process of a stainless steel liquid tank is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
barrel assembly → installation of a wave breaker plate → middle circular seam P + T → installation of a heating pipeline → welding of the wave breaker plate → repair welding of the wave breaker plate → installation of accessories and internal welding of the accessories → air test of the wave breaker plate → head assembly → head trimming, installation of an overflow box → welding of the head P + T → flaw detection → welding of barrel accessories → welding of the heating pipeline → repair welding of the heating pipeline and air test → bracket, omega installation → bracket, omega trimming → bracket, omega welding → pipeline assembly → installation welding of accessories.
2. The molten stainless steel tank production process of claim 1, wherein: the cylinder body group assembly comprises the following steps,
detecting the left-right height difference of the assembly roller machine by using a level gauge, coating a film to adjust the height of a roller way, and cleaning burrs on the opposite sides of the assembly before assembly;
uniformly wrenching two sides of the variable cross section to be assembled along the circumferential direction by using a wrenching tool so that the variable cross section is equal to the circumferences of the front barrel and the rear barrel, rechecking the material, and determining whether the welding wire meets the requirement;
adjusting the positions of the front and rear cylinders by taking the variable cross section and the reserved central line at the bottom of the cylinder as references to enable the front and rear cylinders to be tightly attached to the variable cross section, and trimming the position with larger misalignment by using a rubber hammer;
if the tank internal circular seam riveting point has penetration, a paper adhesive tape is used for protecting the welding line within 20mm, and a thousand impellers are used for polishing and leveling and then an air pipe is used for blowing off metal dust in the butt joint.
3. The process of producing a stainless steel liquid tank as claimed in claim 1 or 2, wherein: the installation of the breakwater comprises the steps of,
placing the barrel on a carrier roller, and drawing a position line of the washboard pad inside the barrel according to the drawing size by taking the front end face of the barrel as a reference;
the position line of the breakwater backing plate is used as a reference, and the assembled breakwater backing plate is installed and fixed by spot welding;
taking the reserved center line position at the bottom of the barrel body as a reference, installing an L plate of the assembled type breakwater according to the center line position of a cushion plate of the assembled type breakwater, and performing auxiliary installation on a position with a larger gap by using a jack;
installing upper and lower connecting beams of the assembled type wave-proof plate, fastening the stiffening beam by using a stainless steel bolt, and tightening a thread at the position by using a TIG spot welding screw after locking to prevent the bolt from loosening;
and (5) taking the L-shaped breakwater plate as a reference, installing the breakwater liquid passing hole reinforcing rib and fixing by spot welding according to the figure.
4. The molten stainless steel tank production process of claim 3, wherein: the installation of the heating duct comprises the steps of,
connecting a front point and a rear point by using an ink fountain and snapping a line according to the preset central point of the front end face and the rear end face of the bottom of the cylinder body as a reference, and drawing a heating pipeline positioning line from the snapping line to two sides according to the drawing size requirement;
measuring the length from the end face of the front cylinder to the variable cross section and the welding seam of the front cylinder by taking the end face of the front cylinder as a reference, cutting the heating pipeline by using a grinding machine according to the measured value, and placing the cut part for later use;
the heating pipeline is positioned by clinging to the ink fountain line and is fixed by TIG welding spot welding;
the butt joint of the heating pipelines meets the pattern requirement and is arranged in parallel;
wiping the edges of the two sides of the groove with vegetable sponge to be clean without oil stain, paint and dust impurities;
and 6 points of the heating pipe are uniformly spot-welded in the middle of the weld joint of the breakwater.
5. The molten stainless steel tank production process of claim 4, wherein: the end socket assembly comprises the following steps of,
polishing the end socket and the end face of the cylinder body by using a handheld polishing machine, cleaning the interior of the cylinder body, removing surface impurities and preventing impurities from scratching the cylinder body;
measuring and calculating the circumference of the cylinder end socket, the roundness and the flatness of the end face, and determining whether the technical requirements are met;
pre-pairing: adjusting the size of the gap according to the center line reserved at the bottom of the cylinder to the center position of the end enclosure of the cylinder, and performing pre-spot welding on the center and the nearby range;
checking whether the assembly conditions in the pre-spot welding range meet requirements, otherwise, damaging the welding points by using a prying shovel, and assembling again;
starting from the center of the bottom of the welding line, spot welding is performed on two sides for fixation, and a prying shovel is used for adjusting the position where the assembly gap is large until the welding line is completely spot-welded.
And after all the operation contents are finished, the operator enters the shop to take down the lining mold.
6. The process of producing a stainless steel liquid tank as claimed in claim 4 or 5, wherein: the end socket finishing comprises the following steps that the mounting center position of a jaw disc marked by a front end socket and a rear end socket is used as a reference, the position of a jaw disc mounting seat is determined by using a jaw disc center model, and the jaw disc mounting seat is marked by using a marker pen;
fully welding a clamping jaw disc mounting seat on the front and rear sealing heads by taking the calibration position as a reference, selecting a clamping jaw disc with a proper specification for mounting, and fastening a clamping jaw disc pre-mounting bolt;
and (4) installing an overflow box, positioning the position of the overflow box according to the central line of the tank top, using a tool and a tightening belt to assist in installing the overflow box, and not installing an overflow box cover plate.
7. The molten stainless steel tank production process of claim 6, wherein: the omega installation comprises that the omega is installed,
the omega reinforcing ribs are segmented according to the drawing size, a saw blade is required to be used for cutting, burrs and oxidation are avoided at the cutting edge, and the cutting surface is flat;
the omega reinforcing rib connecting plate is prewelded on the middle reinforcing rib, and the inner side of the end part is fully welded;
positioning reinforcing ribs, and ensuring the annular positioning precision of the bottom reinforcing ribs by symmetrical spot welding;
the butt joint between the reinforcing ribs requires even gaps, and the reinforcing ribs are polished to be flush after full welding.
8. The molten stainless steel tank production process of claim 7, wherein: the pipe fitting comprises the following steps,
aiming at different tank body sizes, corresponding tools are used for connecting the tank bodies between the bracket and the supporting leg connecting plate;
polishing the oxidation slag on the surface of the pipeline and the cut pipeline by using a polishing machine;
positioning the position of the pipeline according to a technical drawing, assembling a pipeline flange, simulating an actual assembly effect according to the bolt connection requirement, and symmetrically spot-welding after the bolts are fastened;
and simulating the position of the pipeline hanger by using a tool, and positioning the lower end face of the pipeline.
9. The process of producing a stainless steel liquid tank as claimed in claim 7 or 8, wherein: the repair welding and gas testing of the heating pipeline comprises the following steps,
pretreatment: checking whether obvious air leakage points exist in the welding seams of the heating pipes, the welding seams of the heating grooves and the welding seams of the threaded steam pipes, and performing timely repair welding on the air leakage points;
sealing: connecting the gas test joint with a threaded steam pipe, and sealing the joint by using a sealing adhesive tape and a sealant to prevent gas leakage;
testing water: filling compressed air into the water testing tool from the gas testing joint, connecting the water testing tool joint into a heating pipeline, and marking a water leakage point;
and (3) post-treatment: carrying out slotting repair welding on the marked water leakage points by using a back gouging machine, and repeating the gas testing step after the repair welding is finished until all the gas leakage points are completely repaired;
the overflow box blows air from the outside inwards, soap liquor is used for detecting the inside of the overflow box, repair welding is carried out on a leakage point, and the repair welding mode is the same as that of repair welding of the heating pipeline.
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| CN202011610795.XA CN112705872A (en) | 2020-12-30 | 2020-12-30 | Production process of stainless steel liquid tank |
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| CN114872819A (en) * | 2022-05-12 | 2022-08-09 | 山东中车同力钢构有限公司 | Displacement correction tool and displacement correction method for heating pipe of tank car |
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