CN103008853A - Welding process of manufacturing stainless steel medical device - Google Patents
Welding process of manufacturing stainless steel medical device Download PDFInfo
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- CN103008853A CN103008853A CN 201210592924 CN201210592924A CN103008853A CN 103008853 A CN103008853 A CN 103008853A CN 201210592924 CN201210592924 CN 201210592924 CN 201210592924 A CN201210592924 A CN 201210592924A CN 103008853 A CN103008853 A CN 103008853A
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Abstract
This invention provides a welding process of manufacturing a stainless steel medical device, belongs to the filed of welding technologies, and solves the technical problems that an existing welding process of manufacturing an stainless steel medical device is poor in welding quality and low in automatic level. The welding process of manufacturing the stainless steel medical device comprises the following steps: A, selection of raw materials; B, positioning of a cylinder body; C, charging of a gas bag: opening an air source so as to fill the gas bag with compressed air; D, first welding preparation; E, second welding preparation; F, welding operation: opening a submerged arc welding machine, so that welding wire faces a welding groove, and the welding wire moves forwards along the welding groove until a whole welding line is completely welded; and G, surface treatment: detecting appearance of the welding line, performing pickling and passivation treatment, so that surface of the cylinder body meets design requirements. The welding process has the advantages of being high in welding quality, long in service life of devices and high in automatic level.
Description
Technical field
The invention belongs to welding technology field, relate to a kind of welding procedure, particularly the welding procedure of a kind of stainless steel doctorization device fabrication.
Background technology
At present, the welding procedure of existing doctorization equipment barrel generally is such, select the corrosion resistant plate of a block length square shape, corrosion resistant plate is rolled into cylindric by a veneer reeling machine, form the splicing groove between the corrosion resistant plate two ends, again with corrosion resistant plate two ends splicing groove welding together, welding method commonly used generally comprises: SMAW, the gentle guarantor's weldering of submerged-arc welding, the wherein gentle guarantor's weldering of SMAW, all be by manually-operated, the quality of weld seam very major part is restricted by workman's operative skill, so welding quality is unstable.The workman that operative skill is good can weld the high weld seam of quality, and the service life of equipment is just higher, but the poor workman of operative skill welds ropy weld seam, causes the service life of equipment shorter.The heat input of submerged-arc welding is high, has increased the anticorrosive degree of crossing heat sensitization of corrosion resistant plate, and the stainless steel doctorization equipment decay resistance that causes welding out reduces, and service life is shorter.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, proposed the welding procedure of the stainless steel doctorization device fabrication that a kind of weldquality is high, service life of equipment is long, the automation performance is high.
Purpose of the present invention can realize by following technical proposal: the welding procedure of a kind of stainless steel doctorization device fabrication is characterized in that this welding procedure comprises:
A, raw material select: select the corrosion resistant plate of a block length square shape, and the end to end formation in corrosion resistant plate two ends one is cylindric, make its maintenances cylindric by spot welding, thereby form a cylindrical shell, form between the corrosion resistant plate two ends and weld piece;
The placement of B, cylindrical shell: the cylindrical shell of above-mentioned formation is put on the welding tooling, described welding tooling comprises operating desk, be arranged with cylinder one and cylinder two on the described operating desk in parallel, operating desk between described cylinder one and the cylinder two is provided with gasbag, gasbag links to each other with a source of the gas, be covered with granular solder flux on the gasbag, cylindrical shell is placed between cylinder one and the cylinder two;
C, gasbag inflation: open source of the gas, make to be full of compressed air in the gasbag, gasbag has produced a upwards active force on top under compressed-air actuated effect, solder flux little by little shortened under the effect of this power and cylindrical shell between distance, until solder flux and cylindrical shell are close to;
D, weld preparation one: adjust the position of groove to be welded on the cylindrical shell, make the welding piece be in the air bag welding flux backing directly over; Welding wire, ignition tip and solder flux bucket are installed on the welding tractor; Welding wire links to each other with a submerged arc welding machine with ignition tip, and cantilever beam is sent in the cylindrical shell, and welding tractor is placed on the cantilever beam, makes ignition tip and welding wire aim at place to be welded groove;
E, weld preparation two: the speed of adjusting carriage walking speed and carrying welding wire, adjust welding current and arc voltage; In the in-built full weld agent of solder flux bucket, can continuously to the place ahead, place to be welded input solder flux, guarantee arc energy smooth combustion to guarantee welding process.
F, welding operation: open submerged arc welding machine, make described welding wire face bevel for welding, welding wire moves forward along bevel for welding, until be soldered the whole piece weld seam; In the welding process, the solder flux in the solder flux bucket of welding pool top to the place ahead, place to be welded input solder flux, forms gas slag Combined Protection continuously.The back side of weld seam has the solder flux of gasbag jack-up to set off and protect, and can make weld seam be unlikely to burn.
Submerged-arc welding is that the welding wire sent to continuously is as electrode with fill metal, electric arc under welding flux layer welding wire and mother metal between produce, arc heat makes the mother metal around it, welding wire and solder melts are so that the part evaporation, the gas of metal and flux evaporates forms a bubble, electric arc is just in this bubble internal combustion, the solder flux that the top of bubble is melted by one deck, slag consists of adventitia and surrounds, this layer adventitia and cover superincumbent unfused solder flux jointly to having welded air-isolation, thermal insulation and shielded from light radiation effects, the molten drop of wire melting falls and mixes with the mother metal that has melted and consist of metal bath, the part slag floats over weld pool surface because density is little, along with welding wire moves forward.Arc force is pushed deposite metal in the molten bath to the molten bath rear; in cooling procedure subsequently; this part deposite metal is frozen into weld seam; slag is frozen into skull, covers on the weld metal surface, in welding process; slag is except plaing the mechanical protection effect molten bath and weld metal; also with the deposite metal metallurgical chemistry reaction occuring, thereby guarantee the chemical analysis of weld seam, improves composition and the performance of weld metal.
G, surface treatment: detect weld appearance, carry out acid wash passivation and process, make drum surface reach designing requirement.
In the welding procedure of above-mentioned stainless steel doctorization equipment barrel, realizing by veneer reeling machine the end to end formation in corrosion resistant plate two ends one is cylindric in the described steps A.
In the welding procedure of above-mentioned stainless steel doctorization equipment barrel, the cylinder one among the described step B and cylinder two are that the mode by circumferential rotation and axial restraint is arranged on the operating desk.Regulate the rotation of cylinder one and cylinder two, can easily groove place to be spliced be adjusted to and face the wire feed ignition tip, be convenient to welding.
In the welding procedure of above-mentioned stainless steel doctorization equipment barrel, wear and be fixed with a rotating shaft one in the described cylinder one, the two ends of described rotating shaft one all are fixed with bearing, and described bearing is fixed on the described base by bearing block; Wear and be fixed with a rotating shaft two in the described cylinder two, the two ends of described rotating shaft two all are fixed with bearing, and described bearing is fixed on the described base by bearing block.
In the welding procedure of above-mentioned stainless steel doctorization equipment barrel, the source of the gas among the described step C is an inflator pump, and inflator pump is connected with gasbag by tube connector.
In the welding procedure of above-mentioned stainless steel doctorization equipment barrel, cantilever beam described in the described step D and can drive its travel mechanism that moves and link to each other.
In the welding procedure of above-mentioned stainless steel doctorization equipment barrel, described travel mechanism comprises column, cylinder, guide rail and slide block, described column vertically fixes on the ground, described guide rail is vertically fixed on the column, described slide block is arranged in the guide rail, described cantilever beam end is fixed on the end of slide block, and the cylinder body of described cylinder is fixed on the guide rail, and the piston rod of described cylinder is fixed on the other end of slide block.
Compared with prior art, the welding procedure of this stainless steel doctorization equipment barrel has following beneficial effect:
1, by selecting submerged arc welding machine as power supply, avoided the impact of human factor, improved weldquality, prolonged the service life of welding out stainless steel doctorization equipment barrel.
2, by to gasbag inflation the solder flux on the gasbag is contacted with weld seam, in welding process, under the setting off of solder flux, not only can butt welded seam protect but also can not make the workpiece burn-through.
3, control the work of cantilever beam by cylinder, thus the upper and lower, left and right of controlling easily welding wire move, improve the automation performance, reducing manually needs, and saves cost, for enterprise brings larger economic benefit.
Description of drawings
Fig. 1 is process chart of the present invention.
Fig. 2 is the structural representation of welding tooling among the present invention.
Among the figure, 1, cylindrical shell; 2, operating desk; 3, cylinder one; 4, cylinder two; 5, gasbag; 6, solder flux; 7, air pump; 8, tube connector.
The specific embodiment
Below be specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
The flow process of the welding procedure of a kind of stainless steel doctorization equipment barrel 1 of the present invention comprises as follows as shown in Figure 1 successively:
A, raw material select: select the corrosion resistant plate of a block length square shape, and the end to end formation in corrosion resistant plate two ends one is cylindric, make its maintenances cylindric by spot welding, thereby form a cylindrical shell 1, form between the corrosion resistant plate two ends and weld piece; Concrete, the length of corrosion resistant plate is that the 3m width is 1m in the present embodiment, realize the end to end formation in corrosion resistant plate two ends one cylindricly by veneer reeling machine, veneer reeling machine is to adopt the existing product that can buy on the market, and spot welding is that the workman finishes by manual.
The placement of B, cylindrical shell: the cylindrical shell 1 of above-mentioned formation is put on the welding tooling, as shown in Figure 2, welding tooling comprises operating desk 2, be arranged with cylinder 1 and cylinder 24 on the described operating desk 2 in parallel, cylinder 1 and cylinder 24 are that the mode by circumferential rotation and axial restraint is arranged on the operating desk 2; Concrete, in cylinder 1, wearing and be fixed with a rotating shaft one, the two ends of described rotating shaft one all are fixed with bearing, and described bearing is fixed on the described base by bearing block; Wear and be fixed with a rotating shaft two in the described cylinder 24, the two ends of described rotating shaft two all are fixed with bearing, and described bearing is fixed on the described base by bearing block; Operating desk 2 between cylinder 1 and cylinder 24 is provided with gasbag 5, and gasbag 5 links to each other with a source of the gas, is covered with granular solder flux 6 on the gasbag 5; Cylindrical shell 1 is placed between cylinder 1 and the cylinder 24, and rotary drum 1 and cylinder 24 drive its upper shell 1 and rotate, and the welding piece is in directly over the solder flux 6.
C, gasbag inflation: source of the gas is an inflator pump 7, inflator pump 7 is connected with gasbag 5 by tube connector 8, open inflator pump 7, make 5 li of gasbags be full of compressed air, gasbag 5 is under compressed-air actuated effect, produced a upwards active force on top, solder flux 6 little by little shortened under the effect of this power and cylindrical shell 1 between distance, until solder flux 6 is close to cylindrical shell 1.
D, weld preparation one: adjust the position of groove to be welded on the cylindrical shell 1, make the welding piece be in air bag solder flux 6 pad directly over; Welding wire, ignition tip and solder flux 6 buckets are installed on the welding tractor; Welding wire links to each other with a submerged arc welding machine with ignition tip, and cantilever beam is sent in the cylindrical shell 1, and welding tractor is placed on the cantilever beam, makes ignition tip and welding wire aim at place to be welded groove; Cantilever beam and one can drive its travel mechanism that moves and link to each other, travel mechanism comprises column, cylinder, guide rail and slide block, described column vertically fixes on the ground, described guide rail is vertically fixed on the column, described slide block is arranged in the guide rail, described cantilever beam end is fixed on the end of slide block, and the cylinder body of described cylinder is fixed on the guide rail, and the piston rod of described cylinder is fixed on the other end of slide block.
E, weld preparation two: the speed of adjusting carriage walking speed and carrying welding wire, adjust welding current and arc voltage; In the in-built full weld agent 6 of solder flux 6 buckets, can continuously to the place ahead, place to be welded input solder flux 6, guarantee arc energy smooth combustion to guarantee welding process.
F, welding operation: open submerged arc welding machine, make described welding wire face bevel for welding, welding wire moves forward along bevel for welding, until be soldered the whole piece weld seam; In the welding process, the solder flux 6 in solder flux 6 buckets of welding pool top forms gas slag Combined Protection continuously to the place ahead, place to be welded input solder flux 6.The back side of weld seam has the solder flux 6 of gasbag 5 jack-up to set off and protect, and can make weld seam be unlikely to burn.
Submerged-arc welding is that the welding wire sent to continuously is as electrode with fill metal, electric arc under 6 layers of solder flux welding wire and mother metal between produce, arc heat makes the mother metal around it, welding wire and solder flux 6 fusings are so that the part evaporation, the gas of metal and solder flux 6 evaporations forms a bubble, electric arc is just in this bubble internal combustion, the solder flux 6 that the top of bubble is melted by one deck, slag consists of adventitia and surrounds, this layer adventitia and cover superincumbent unfused solder flux 6 jointly to having welded air-isolation, thermal insulation and shielded from light radiation effects, the molten drop of wire melting falls and mixes with the mother metal that has melted and consist of metal bath, the part slag floats over weld pool surface because density is little, along with welding wire moves forward.Arc force is pushed deposite metal in the molten bath to the molten bath rear; in cooling procedure subsequently; this part deposite metal is frozen into weld seam; slag is frozen into skull, covers on the weld metal surface, in welding process; slag is except plaing the mechanical protection effect molten bath and weld metal; also with the deposite metal metallurgical chemistry reaction occuring, thereby guarantee the chemical analysis of weld seam, improves composition and the performance of weld metal.
G, surface treatment: detect weld appearance, carry out acid wash passivation and process, make cylindrical shell 1 surface reach designing requirement.
In the welding procedure of above-mentioned stainless steel doctorization equipment barrel 1, described in the described step e
Specific embodiment described herein only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more used 1, cylindrical shell; 2, operating desk; 3, cylinder one; 4, cylinder two; 5, gasbag; 6, solder flux; 7, air pump; 8, the term such as tube connector, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (7)
1. the welding procedure of stainless steel doctorization device fabrication is characterized in that, this welding procedure comprises:
A, raw material select: select the corrosion resistant plate of a block length square shape, and the end to end formation in corrosion resistant plate two ends one is cylindric, make its maintenances cylindric by spot welding, thereby form a cylindrical shell (1), form between the corrosion resistant plate two ends and weld piece;
The placement of B, cylindrical shell: the cylindrical shell (1) of above-mentioned formation is put on the welding tooling, described welding tooling comprises operating desk (2), be arranged with cylinder one (3) and cylinder two (4) on the described operating desk (2) in parallel, operating desk (2) between described cylinder one (3) and the cylinder two (4) is provided with gasbag (5), gasbag (5) links to each other with a source of the gas, be covered with granular solder flux (6) on the gasbag (5), cylindrical shell (1) is placed between cylinder one (3) and the cylinder two (4);
C, gasbag inflation: open source of the gas, make the inner compressed air that is full of of gasbag (5), gasbag (5) is under compressed-air actuated effect, produced a upwards active force on top, solder flux (6) little by little shortened under the effect of this power and cylindrical shell (1) between distance, until solder flux (6) and cylindrical shell (1) are close to;
D, weld preparation one: adjust the position of the upper groove to be welded of cylindrical shell (1), make the welding piece be in air bag solder flux (6) pad directly over; Welding wire, ignition tip and solder flux (6) bucket is installed on the welding tractor; Welding wire links to each other with a submerged arc welding machine with ignition tip, and cantilever beam is sent in the cylindrical shell (1), and welding tractor is placed on the cantilever beam, makes ignition tip and welding wire aim at place to be welded groove;
E, weld preparation two: the speed of adjusting carriage walking speed and carrying welding wire, adjust welding current and arc voltage; In the in-built full weld agent (6) of solder flux (6) bucket, can continuously to the place ahead, place to be welded input solder flux (6), guarantee arc energy smooth combustion to guarantee welding process;
F, welding operation: open submerged arc welding machine, make described welding wire face bevel for welding, welding wire moves forward along bevel for welding, until be soldered the whole piece weld seam; In the welding process, the solder flux (6) in solder flux (6) bucket of welding pool top to the place ahead, place to be welded input solder flux (6), forms gas slag Combined Protection continuously;
G, surface treatment: detect weld appearance, carry out acid wash passivation and process, make cylindrical shell (1) surface reach designing requirement.
2. the welding procedure of stainless steel doctorization according to claim 1 device fabrication is characterized in that, realizing by veneer reeling machine the end to end formation in corrosion resistant plate two ends one is cylindric in the described steps A.
3. the welding procedure of stainless steel doctorization according to claim 1 device fabrication is characterized in that, the cylinder one (3) among the described step B and cylinder two (4) are that the mode by circumferential rotation and axial restraint is arranged on the operating desk (2).
4. the welding procedure of stainless steel doctorization according to claim 3 device fabrication, it is characterized in that, wear and be fixed with a rotating shaft one in the described cylinder one (3), the two ends of described rotating shaft one all are fixed with bearing, and described bearing is fixed on the described base by bearing block; Wear and be fixed with a rotating shaft two in the described cylinder two (4), the two ends of described rotating shaft two all are fixed with bearing, and described bearing is fixed on the described base by bearing block.
5. the welding procedure of stainless steel doctorization according to claim 1 device fabrication is characterized in that, the source of the gas among the described step C is an inflator pump (7), and inflator pump (7) is connected with gasbag (5) by tube connector (8).
6. the welding procedure of stainless steel doctorization according to claim 1 device fabrication is characterized in that, cantilever beam described in the described step D and can drive its travel mechanism that moves and link to each other.
7. the welding procedure of stainless steel doctorization according to claim 6 device fabrication, it is characterized in that, described travel mechanism comprises column, cylinder, guide rail and slide block, described column vertically fixes on the ground, described guide rail is vertically fixed on the column, and described slide block is arranged in the guide rail, and described cantilever beam end is fixed on the end of slide block, the cylinder body of described cylinder is fixed on the guide rail, and the piston rod of described cylinder is fixed on the other end of slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210592924 CN103008853A (en) | 2012-12-31 | 2012-12-31 | Welding process of manufacturing stainless steel medical device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210592924 CN103008853A (en) | 2012-12-31 | 2012-12-31 | Welding process of manufacturing stainless steel medical device |
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| CN103008853A true CN103008853A (en) | 2013-04-03 |
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| CN 201210592924 Withdrawn CN103008853A (en) | 2012-12-31 | 2012-12-31 | Welding process of manufacturing stainless steel medical device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526192A (en) * | 2014-11-25 | 2015-04-22 | 浙江海洋学院 | Welding humidity control method for surface of steel |
| CN112621126A (en) * | 2020-12-14 | 2021-04-09 | 江苏电力装备有限公司 | Welding process of nuclear-grade pipeline carbon steel coil welded pipe |
-
2012
- 2012-12-31 CN CN 201210592924 patent/CN103008853A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526192A (en) * | 2014-11-25 | 2015-04-22 | 浙江海洋学院 | Welding humidity control method for surface of steel |
| CN112621126A (en) * | 2020-12-14 | 2021-04-09 | 江苏电力装备有限公司 | Welding process of nuclear-grade pipeline carbon steel coil welded pipe |
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Application publication date: 20130403 |