CN102974983B - Process for manufacturing spherical tank with 1000cm diameter - Google Patents
Process for manufacturing spherical tank with 1000cm diameter Download PDFInfo
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- CN102974983B CN102974983B CN201210505802.9A CN201210505802A CN102974983B CN 102974983 B CN102974983 B CN 102974983B CN 201210505802 A CN201210505802 A CN 201210505802A CN 102974983 B CN102974983 B CN 102974983B
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Abstract
The invention discloses a process for manufacturing a spherical tank with a 1000cm diameter. The process for manufacturing the spherical tank with the1000cm diameter comprises the following steps of: performing ultrasonic flaw detection on a raw material; marking off, cutting and blanking; pressing a waist drum-shaped limb; pressing an upper segment seal head and a lower segment seal head; processing a welding groove; performing pretest assembling on a cylinder body; packaging after passed examination; transporting to the field; and completing field welding. The process for manufacturing the spherical tank with the1000cm diameter meets the requirements of an accumulator spherical tank for nuclear power.
Description
Technical field
The present invention relates to the spherical tank manufacture craft that a kind of diameter is 1000 centimetres.
Background technology
Along with industrial expansion, the application of large-size spherical tank be people in the urgent need to, such as diameter is the large-size spherical tank of 1000 centimetres, but large-size spherical tank is commercially or seldom, its manufacture craft is very complicated and strict at present.
Summary of the invention
The object of the present invention is to provide a kind of technique simple and the diameter that can meet instructions for use is the spherical tank manufacture craft of 1000 centimetres.
For realizing object of the present invention, a kind of diameter is the spherical tank manufacture craft of 1000 centimetres, its process is, pack → be transported to place → Site Welding after the dolioform limb of raw material ultrasonic examination → line cutting stock → suppress → suppress upper and lower segment seal head → bevel for welding processing → stack shell prerun assembling → passed examination to complete, wherein suppressing dolioform limb steel plate blank used is clad steel plate SA533Type.BClass.1+SA240Type.304L.
The Technology for Heating Processing of the steel plate blank that the dolioform limb of described compacting is used is, steel plate blank enters stove heating below 300 DEG C, 80 minutes are incubated when being heated to 700 ± 10 DEG C with the heating rate of≤180 DEG C/h, then be cooled to >=350 DEG C, steel plate blank after heat treatment is placed on mould, blank holder compresses steel plate blank surrounding, patrix moves downward, steel plate blank is made to clamp-on in the mould circle of counterdie, when ensureing that steel plate blank compresses at upper die and lower die, by steel plate blank air cooling to room temperature.
Need annealing in process after the compacting of described upper and lower segment seal head, first upper and lower segment seal head be heated to 300 DEG C and be incubated 120 minutes, be then heated to 750 DEG C ± 10 DEG C with the speed of≤100 DEG C/h and be incubated 150 minutes, and then air cooling is to room temperature.
During described Site Welding employing SMAW, meet following requirement: when spherical tank adopts and divides band assembling, vertical, the circumferential weld of each band should be welded on assembly platform, after nondestructive testing is qualified, then be assembled into entirety, then carry out the welding between each band; When spherical tank adopts burst to assemble, should weld by the principle of circumferential weld after first longitudinal joint.
Described SMAW is two-sided butt weld, the laggard row back gouging of one-sided welding.
Described back chipping is carbon arc gas back chipping, will ensure bevel shape one direct join crushing channeling and worn carburized layer after back chipping, and adopts VT, MT or PT detection method to detect.
During described welding, starting the arc end adopts and retreats the starting the arc of starting the arc method, and receive arc end and filled up by arc crater, the interlayer joint of multilayer welding staggers.
The invention has the beneficial effects as follows: this Technology for Heating Processing mainly solves post weld heat treatment problem, according to the technical requirement of peace note case spherical tank, only heat-treat to eliminate weld residual stress, restorer performance, because spherical tank is bulky, ball thickness of slab, during warm forging, resistance of deformation is relative to large during forge hot, not yielding, so spherical tank plate hardness high strength is high after distortion, plasticity, toughness reduce, and occur work hardening phenomenon, therefore Technology for Heating Processing can eliminate this phenomenon, improves plasticity, toughness, the reduction hardness of material.
Accompanying drawing explanation
Fig. 1 is the heat treatment cycle curve figure of steel plate blank;
Fig. 2 is the annealing in process curve map after the compacting of upper and lower segment seal head.
Detailed description of the invention
Below in conjunction with accompanying drawing, the spherical tank manufacture craft that diameter of the present invention is 1000 centimetres is described in further detail.
A kind of diameter is the spherical tank manufacture craft of 1000 centimetres, its process is, pack → be transported to place → Site Welding after the dolioform limb of raw material ultrasonic examination → line cutting stock → suppress → suppress upper and lower segment seal head → bevel for welding processing → stack shell prerun assembling → passed examination to complete, wherein suppressing dolioform limb steel plate blank used is clad steel plate SA533Type.B Class.1+SA240Type.304L.
As shown in Figure 1, the Technology for Heating Processing of the steel plate blank that the dolioform limb of described compacting is used is, steel plate blank enters stove heating below 300 DEG C, 80 minutes are incubated when being heated to 700 ± 10 DEG C with the heating rate of≤180 DEG C/h, then be cooled to >=350 DEG C, steel plate blank after heat treatment is placed on mould, blank holder compresses steel plate blank surrounding, patrix moves downward, steel plate blank is made to clamp-on in the mould circle of counterdie, when ensureing that steel plate blank compresses at upper die and lower die, by steel plate blank air cooling to room temperature.
As shown in Figure 2, annealing in process is needed after the compacting of described upper and lower segment seal head, first upper and lower segment seal head be heated to 300 DEG C and be incubated 120 minutes, be then heated to 750 DEG C ± 10 DEG C with the speed of≤100 DEG C/h and be incubated 150 minutes, and then air cooling being to room temperature.After above-mentioned twice heat treatment, billet material clad steel plate SA533Type.B Class.1+SA240Type.304L just has as the chemical composition % in following table 1.Mechanical property meets table 2.
Note: in table, the content of SA533Type.B Class.1 aluminium is total aluminium content requirement
Table 1
Table 2
During described Site Welding employing SMAW, meet following requirement: when spherical tank adopts and divides band assembling, vertical, the circumferential weld of each band should be welded on assembly platform, after nondestructive testing is qualified, then be assembled into entirety, then carry out the welding between each band; When spherical tank adopts burst to assemble, should weld by the principle of circumferential weld after first longitudinal joint.During described welding, starting the arc end adopts and retreats the starting the arc of starting the arc method, and receive arc end and filled up by arc crater, the interlayer joint of multilayer welding staggers.Described SMAW is two-sided butt weld, the laggard row back gouging of one-sided welding.Described back chipping is carbon arc gas back chipping, will ensure bevel shape one direct join crushing channeling and worn carburized layer after back chipping, and adopts VT, MT or PT detection method to detect.
The performance peace that can meet on nuclear power according to the spherical tank of above-mentioned manufacture technics with high strength and the aqueous corrosion of resistance to boron notes the requirement of case spherical tank.
Claims (5)
1. diameter is the spherical tank manufacture craft of 1000 centimetres, it is characterized in that: its process is, raw material ultrasonic examination → line cutting stock → suppress in dolioform limb → compacting, pack → be transported to place → Site Welding after lower segment seal head → bevel for welding processing → stack shell prerun assembling → passed examination to complete, wherein suppressing dolioform limb steel plate blank used is clad steel plate SA533 Type.B Class.1+SA240 Type.304L, the Technology for Heating Processing of the steel plate blank that the dolioform limb of described compacting is used is, steel plate blank enters stove heating below 300 DEG C, 80 minutes are incubated when being heated to 700 ± 10 DEG C with the heating rate of≤180 DEG C/h, then be cooled to >=350 DEG C, steel plate blank after heat treatment is placed on mould, blank holder compresses steel plate blank surrounding, patrix moves downward, steel plate blank is made to clamp-on in the mould circle of counterdie, when ensureing that steel plate blank compresses at upper die and lower die, by steel plate blank air cooling to room temperature, on described, annealing in process is needed after the compacting of lower segment seal head, first by upper, lower segment seal head is heated to 300 DEG C and is incubated 120 minutes, then be heated to 750 DEG C ± 10 DEG C with the speed of≤100 DEG C/h and be incubated 150 minutes, and then air cooling is to room temperature.
2. diameter according to claim 1 is the spherical tank manufacture craft of 1000 centimetres, it is characterized in that: during described Site Welding employing SMAW, meet following requirement: when spherical tank adopts and divides band assembling, vertical, the circumferential weld of each band should be welded on assembly platform, after nondestructive testing is qualified, be assembled into entirety again, then carry out the welding between each band; When spherical tank adopts burst to assemble, should weld by the principle of circumferential weld after first longitudinal joint.
3. diameter according to claim 2 is the spherical tank manufacture craft of 1000 centimetres, it is characterized in that: described SMAW is two-sided butt weld, the laggard row back gouging of one-sided welding.
4. diameter according to claim 3 is the spherical tank manufacture craft of 1000 centimetres, it is characterized in that: described back chipping is carbon arc gas back chipping, bevel shape one direct join crushing channeling and worn carburized layer to be ensured after back chipping, and adopt VT, MT or PT detection method to detect.
5. diameter according to claim 2 is the spherical tank manufacture craft of 1000 centimetres, it is characterized in that: during described welding, and starting the arc end adopts and retreats the starting the arc of starting the arc method, and receive arc end and filled up by arc crater, the interlayer joint of multilayer welding staggers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505802.9A CN102974983B (en) | 2012-12-01 | 2012-12-01 | Process for manufacturing spherical tank with 1000cm diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505802.9A CN102974983B (en) | 2012-12-01 | 2012-12-01 | Process for manufacturing spherical tank with 1000cm diameter |
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| Publication Number | Publication Date |
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| CN102974983A CN102974983A (en) | 2013-03-20 |
| CN102974983B true CN102974983B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210505802.9A Expired - Fee Related CN102974983B (en) | 2012-12-01 | 2012-12-01 | Process for manufacturing spherical tank with 1000cm diameter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692155A (en) * | 2013-11-14 | 2014-04-02 | 常州蓝翼飞机装备制造有限公司 | Forming technology of aviation fire suppression bottle end socket |
| CN108723721A (en) * | 2018-06-11 | 2018-11-02 | 江阴中南重工有限公司 | Sandwich is molded the manufacturing method of threeway |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641257A (en) * | 2004-12-28 | 2005-07-20 | 上海市安装工程有限公司 | Low-temperature spherical tank for storing ethylene and its preparing method |
| CN101214601A (en) * | 2007-12-27 | 2008-07-09 | 中冶天工建设有限公司 | Spherical shell plate once cutting pressing technique |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641257A (en) * | 2004-12-28 | 2005-07-20 | 上海市安装工程有限公司 | Low-temperature spherical tank for storing ethylene and its preparing method |
| CN101214601A (en) * | 2007-12-27 | 2008-07-09 | 中冶天工建设有限公司 | Spherical shell plate once cutting pressing technique |
Non-Patent Citations (2)
| Title |
|---|
| CF―62钢焊制球罐的制造工艺规程(草案);通用机械研究所等;《压力容器》;19870730;第04卷(第04期);1－4 * |
| 不锈钢复合板球罐焊接方法;韩丽娟等;《金属加工(热加工)》;20081220(第24期);39-43,46 * |
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Granted publication date: 20150610 Termination date: 20171201 |