CN101767172A - Hot extrusion molding method for pipe nozzle of main steam super pipeline - Google Patents

Hot extrusion molding method for pipe nozzle of main steam super pipeline Download PDF

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Publication number
CN101767172A
CN101767172A CN 200910273488 CN200910273488A CN101767172A CN 101767172 A CN101767172 A CN 101767172A CN 200910273488 CN200910273488 CN 200910273488 CN 200910273488 A CN200910273488 A CN 200910273488A CN 101767172 A CN101767172 A CN 101767172A
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Prior art keywords
pipe
tube
nozzle
die
position
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CN 200910273488
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Chinese (zh)
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CN101767172B (en )
Inventor
何有斌
刘长安
卫刚
吴宏伟
廖钢
张承峰
曹虹
沈成义
熊武
王寒风
谭大伟
陈国华
陈国遂
韩建明
黄丽秋
黄永强
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武汉重工铸锻有限责任公司
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Abstract

The invention discloses a hot extrusion molding method for a pipe nozzle of a main steam super pipeline, which relates to a hot extrusion molding method for utilizing a whole set of dedicated molding die to forge the pipe nozzle of the nuclear power main steam super pipeline. A steel pipe blank is mechanically processed into a main pipe blank with qualified dimension. A preset hole is arranged according to the position of the pipe nozzle of the super pipeline. The operation of positioning the three centers of a punch, the preset hole and a female die is completed by utilizing the female die and a supporting positioning pin. The position, i.e. the peripheral region of the preset hole which needs to be extruded, is heated. An inverted extrusion pressure is applied from the inside of the pipe blank to outside to make a parent metal of the steel pipe blank plastically deformed outward and molded into the pipe nozzle with the required dimension. Compared with the conventional welding method, the method not only can realize connection between the pipe nozzle and the female pipe, does not cut off the fibers of the steel female pipe and the pipe nozzle, but also does not need to weld, realizes the integrated molding of the super pipeline and the pipe nozzle, improves the internal quality of the super pipeline and achieves the requirements of the design party for the product.

Description

主蒸汽超级管道管嘴热挤压成型方法 Main steam pipe nozzle super hot extrusion molding method

技术领域 FIELD

[0001] 本发明涉及一种利用整套专用成型模具锻造核电主蒸汽超级管道管嘴热挤压成 [0001] The present invention relates to a package of special nuclear forging mold main steam super hot extruded pipe nozzle

型方法。 Type method. 背景技术 Background technique

[0002] 目前,国内国际的核能发电市场巨大,核电技术更新换代较快。 [0002] At present, domestic and international nuclear power generation market is huge, nuclear power technology faster replacement. 超级管道是蒸汽管道的重要组成部分,主蒸汽超级管道管嘴的生产技术已依据核电设计要求发生变化。 Super pipe is an important part of the steam pipe, the nozzle main steam super pipe production technology of nuclear power has been changed according to design requirements. 依据核电设计要求,主蒸汽超级管道的管嘴必须与母管整体锻造成型,使管嘴与管道的纤维连续;这就要求超级管道的管嘴不能通过先前的焊接方式成型。 Nuclear power based on design requirements, the super main steam pipe nozzle and the manifold must be forged integrally molded nozzle and the fiber continuous conduit; super pipe which requires the nozzle of the welding can not be previously formed.

[0003] 利用传统方法生产的超级管道的管嘴,其连接方式为焊接,质量难以满足核电复杂的使用工况要求。 [0003] With the method for producing the conventional super pipe nozzle, which connection for the welding quality is difficult to meet using nuclear complex working conditions. 新的核电设计要求管嘴与母管整体锻造成型,而在成型过程中,如何定位对齐,使成型的管嘴各方面尺寸较为均匀、达到设计要求,是非常困难的。 The new design of nuclear power requirements nozzle and the manifold forged integrally molded in the molding process, how to position alignment, the molded nozzle aspects of relatively uniform size, meet the design requirements, it is very difficult.

发明内容 SUMMARY

[0004] 本发明的目的是针对上述现状,旨在提供一种能够解决主蒸汽超级管道管嘴生产 [0004] The object of the present invention is directed to the above-described situation, it aims to provide a solution capable of super-pipe nozzle main steam production

过程中孔间距确定困难和变形不均匀的主蒸汽超级管道管嘴热挤压成型方法。 Difficult to determine the hole spacing during deformation and nonuniform nozzle main steam pipe super hot extrusion molding method.

[0005] 本发明目的的实现方式为,主蒸汽超级管道管嘴热挤压成型方法,具体步骤为: [0005] The object of the present invention is an implementation of the main steam pipe nozzle super hot extrusion molding method, the specific steps:

[0006] 1)通过炼钢,氧割钢锭冒口,冲孔,拉拔,毛坯热处理,成型毛坯管道,机械加工得 [0006] 1) through the steel, oxygen riser ingot cutting, punching, drawing, heat treating the blank, forming the blank pipe, machining to give

到合格的母管管坯; Mother pipe to qualified tube;

[0007] 2)按照超级管道的管嘴所在位置设置预置孔,选好凹模及配套专用定位销,装好凹模座; [0007] 2) is provided in accordance with the preset nozzle hole located super pipe position, and the selected die supporting special positioning pins, the die holder installed;

[0008] 3)先将V形支撑砧吊上油压机平台,将支撑杆穿过母管管坯,吊下,同时按照工艺将主次弹簧基座摆好,安装弹簧座,然后将另一V形支撑砧吊上平台,控制好两者之间的位置,将穿过支撑杆的母管管坯放在弹簧座之上,同时确保支撑杆落在两边的V型支撑砧上; [0009] 4)调整支撑杆在钢管内的位置,使支撑杆处于母管管坯内正中心位置,并将管道和支撑杆吊到V形支撑砧上,使母管管坯的预置孔中心垂直向上,同时调整支撑杆的位置, 使管道预置孔中心线垂直于T型槽内中心线,调整冲头位置,使之处于预置孔正下方并记录位置,拉出冲头; [0008] 3) The first V-shaped support anvil hanging on the hydraulic platforms, the support rod through the tube mother pipe, suspended at the same time the process according to the primary and secondary spring base gracefully, the spring mounting seat, and the other V-shaped hanging platform supporting anvil, a good control position between the two, support rods passing through the main pipe placed over a spring seat tube, while ensuring that the V-shaped anvil support bar to fall on both sides of the support; [0009] 4 ) to adjust the position of the support rod in the pipe, so that the support rod standing in the center position of the inner tube main pipes, and the pipes hanging support rod and to the V-shaped anvil support the pre-placement hole center tube vertically upward mother tube, while adjusting the position of the support bar, the pipe holes pre-groove centerline T perpendicular to the center line, to adjust the position of the punch, so that in the pre-placement hole and just below the recording position of the punch is pulled out;

[0010] 5)将专用定位销放入凹模的孔中,专用挂钩勾住母管管坯两边的起吊专用槽,将凹模座平稳起吊到预置孔的上方,将专用定位销的锥形部分插入母管管坯的预置孔,起落数次,找到最佳位置,使专用定位销能够在行车移走时自由脱落,局部加热达到条件之后, 迅速重复上述动作,使凹模对齐落位,完成冲头、预置孔、凹模三心定位工作; [0011] 6)用局部加热器加热需要挤压部位,即预置孔周围小400mm区域,局部加热前调整好管道内的挡火盘,另一端放置已经预装好的冲头,局部加热30-50分钟,温度为1250-128(TC,保温5-10分钟,待钢管加热区域与火焰颜色一致后,拉出局部加热器的挡火盘,推过冲头还原至原记录位置,迅速通过定位销使凹模落位,带走配套的专用定位销;[0012] 7)开动压力机,开始挤压作业,作业时将支撑杆、母管管坯及凹模座三者 [0010] 5) The special locating pin into the hole of the die, the dedicated mother tube on both sides of the hook to hook lifting tube dedicated slot, the die holder above the preset lifting smooth bore, a tapered positioning pin dedicated pre-shaped portion of the insertion hole of the main pipe tube, rise and fall several times to find the optimum position, so that a dedicated positioning pin can be freely removed off while driving, after local heating conditions to achieve rapid operation is repeated, so that the die is aligned seating , the punch is completed, the preset holes, positioning is three heart die; [0011] 6) a partially squeezed portion of a heater requires, i.e. 400mm small area preset around the hole, a good adjustment of fire blocking the duct before the localized heating disc, has been pre-installed and the other end is placed punch, local heating for 30-50 min at a temperature of 1250-128 (TC, incubated for 5-10 minutes, after heating the steel pipe to be consistent with the flame color region, the local heater drawn firestop plate, pushed through the punch restored to the original recording position, the positioning pin so quickly die seating, supporting a special positioning pins away; [0012] 7) press start to begin squeezing operation, the job support rod, tube main pipe and the three die holder 实,挤压作业完成后,将母管管坯热处理、粗加工、无损探伤检测,水压试验,性能测试后得主蒸汽超级管道。 In fact, after the squeezing operation is completed, the mother pipe heat treatment tube, rough, nondestructive testing, the hydrostatic testing, performance testing of steam super pipe winner.

[0013] 本发明是将钢管坯料机械加工成尺寸合格的母管管坯,按照超级管道的管嘴所在位置设置预置孔,利用凹模及配套定位销完成冲头、预置孔、凹模三心定位工作,加热需要挤压部位,即预置孔周围区域,从母管管坯内向外施加反挤压力,使母管管坯母材向外塑性变形成型所需尺寸的管嘴。 [0013] The present invention is a steel billet is machined to the size of the mother pipe passing tube, in accordance with the super pipe nozzle is provided pre-placement hole location, using positioning pins and supporting die punch completed, pre-orifice, die three heart positioning is heated pressing need site, i.e., the preset area around the hole, applying a counter pressing force from the inner tube outwardly mother tube, the mother tube is plastically deformed outwardly tube shaped preform the desired size of the nozzle. 本发明与传统的焊接方法相比,既能使管嘴与母管管坯实现连接,不切断钢管母管管坯与管嘴的纤维;同时又不需要焊接,实现了超级管道与管嘴整体上的成型,提高了超级管道的内在质量,达到了设计方对产品的要求。 Compared with the conventional welding method of the present invention, both the nozzle and the manifold tube connection achieved, without cutting the mother steel tube nozzle tube with the fiber; the same time, without welding, to achieve the overall super pipe to the nozzle forming on improving the intrinsic quality of the super pipe, reaching the designer product requirements.

附图说明 BRIEF DESCRIPTION

[0014] 图1是管嘴成型整体工装原理图, [0014] FIG. 1 is a nozzle molded integrally tooling schematics,

[0015] 图2是管嘴成型定位销对齐后整体工装截面图, [0015] FIG. 2 is a nozzle molded integrally tooling sectional view of the positioning pin alignment,

[0016] 图3是目标产品管嘴成型时的反穿原理图, [0016] FIG. 3 is a view of the principle of anti-wear nozzle molding target product,

[0017] 图4是管嘴成型前后所用材料变化对照示意图, [0017] FIG. 4 is a schematic diagram of the control used before and after the change material forming the nozzle,

[0018] 图5是母管管坯示意图, [0018] FIG. 5 is a schematic view of a mother pipe tube,

[0019] 图6是成型后的管嘴示意图。 [0019] FIG. 6 is a schematic view of the shaped nozzle.

具体实施方式 detailed description

[0020] 下面参照附图详述本发明。 [0020] The present invention is described in detail below with reference to the accompanying drawings.

[0021 ] 通过炼钢,氧割钢锭冒口,冲孔,拉拔,毛坯热处理,成型毛坯管道,机械加工得到合格的母管管坯。 [0021] By steelmaking, oxygen riser ingot cutting, punching, drawing, heat treating the blank, forming the blank pipe, machining to obtain acceptable mother pipe tube.

[0022] 利用本申请人申请的发明专利《应用于核电主蒸汽超级管道管嘴成型预置孔设置方法》的方法设置预置孔。 [0022] With the present applicant's patent "used in nuclear power steam super pipe main nozzle hole is provided method of pre-forming" method provided pre-placement hole. 选好凹模及配套定位销,装好凹模座, Selected die and supporting pin, installed base die,

[0023] 设置预置孔的具体方法是,在合格的母管管坯上确认四个预置孔的位置,确定挤压管嘴时的冲头和凹模的尺寸,按照体积不变原则,同时忽略管坯变形面是椭圆弧面的影响,标准管道取厚49. 8mm,局部加热氧化损失按厚0. 8mm计算,按公式(。2-小2) XH = ((t2-A小2) XS计算预置孔直径,式中①表示管嘴外圆平均直径,小表示管嘴内孔平均直径,H表示管嘴期望成型后的高度,S表示管坯可利用厚度。 [0023] Specifically provided is of a preset hole, confirms the position of the four holes in the pre-qualified mother pipe tube, the punch and the die to determine the dimensions of the extrusion nozzle, in accordance with the principle of constant volume, tube surface is deformed while ignoring the influence of an elliptical arc, taking the standard conduit 49. 8mm thick, localized heating and oxidation loss calculated thickness 0. 8mm, according to the formula (Methyl 2- small 2) XH = ((t2-a small 2 ) XS pre-calculated pore diameter, wherein the nozzle ① represents the average outer diameter of the nozzle hole represents a small average diameter, H is the height of the nozzle after molding is desired, S represents a shell thickness may be utilized.

[0024] 先将V形支撑砧1吊上油压机平台,将支撑杆2穿过母管管坯3,吊下,同时按照工艺将主次弹簧基座摆好,安装弹簧座9,然后将另一V形支撑砧吊上平台,控制好两者之间的位置。 [0024] The first V-shaped support anvil hanging on the hydraulic platforms 1, 2 through the support rod tube mother pipe 3, the lower hanging, while the process according to the primary and secondary spring base gracefully, spring seat 9 is mounted, and the other V-shaped hanging support anvil on the platform, the control position between the two well. 将穿过支撑杆的母管管坯3放在弹簧座之上(见图l),同时确保支撑杆落在两边的V型支撑砧1上,调整整个模具架构到最佳状态,即母管管坯水平,预置孔垂直向上,调整冲头8的位置(见图1、2),使冲头对准预置孔正下方,并记录位置,拉出冲头。 Mother pipe passing through the support bar 3 is placed on the spring seat tube (see Fig L), while ensuring that the V-shaped anvil support bar is supported on both sides of a fall, the entire mold adjusted to the best infrastructure, i.e. mother pipe horizontal tube, pre-placement hole vertically upwards, punch adjustment of the position of the head 8 (see FIG. 2), the punch hole is aligned directly below the pre-set, and the recording position, the punch is pulled out. [0025] 将专用定位销5放入凹模6的孔中(见图2),专用挂钩勾住母管管坯两边的起吊专用槽12 (见图5),将凹模座4平稳起吊到预置孔7的上方,将专用定位销的锥形部分插入母管管坯的预置孔,起落数次,找到最佳位置,使专用定位销能够在行车移走时自由脱落, 局部加热达到条件之后,迅速重复上述动作,使凹模对齐落位,完成冲头、预置孔、凹模三心定位工作(见图3)。 [0025] The special positioning pin 5 into the die hole 6 (see FIG. 2), an application specific hook hooked on both sides of the mother tube shell lifting dedicated slot 12 (see FIG. 5), the die 4 to the smooth lifting seat preset 7 above the hole, the tapered portion of the positioning pin is inserted into dedicated holes pre-tube mother tube, the rise and fall several times to find the optimum position, so that a dedicated positioning pin can be freely removed off while driving, to achieve localized heating conditions Thereafter, the above operation is repeated rapidly, so that the seating alignment die, the punch is completed, pre-orifice, the die positioning is three heart (see FIG. 3). [0026] 用局部加热器加热需要挤压部位,即预置孔周围小400mm区域。 [0026] The topical heater need to squeeze portion, i.e. the small holes around 400mm preset area. 局部加热前 Locally before heating

调整好管道内的挡火盘,另一端放置已经预装好的冲头,局部加热30-50分钟,温度为 Firestop adjusted within the pipe tray, placing the other end of the punch has been pre-installed, local heating 30-50 minutes at

1250-128(TC,保温5-10分钟,待钢管加热区域与火焰颜色一致后,拉出局部加热器的挡火 1250-128 (TC, incubated for 5-10 minutes, after heating the steel pipe to be consistent with the flame color region, the local heater drawn firestop

盘,推过冲头还原至原记录位置,迅速通过定位销使凹模落位,带走专用定位销。 Plate, pushed through the punch restored to the original recording position, the positioning pin so quickly die seating, take special positioning pins.

[0027] 开动压力机,开始挤压作业,作业时将支撑杆、钢管坯及凹模座三者压实。 [0027] presses start, start pressing job, the job support rods, steel die and the blank holder three compaction. 要求这 This requirement

一系列操作在极短的时间内完成,时间越短越好。 A series of operations in a very short time to complete, the shorter the better.

[0028] 挤压作业完成后,将母管管坯热处理、粗加工、无损探伤检测,理化检验合格后,进行功能性试验、精加工,包装、防护,交付用户使用。 [0028] After the squeezing operation is completed, the mother pipe heat treatment tube, rough, nondestructive testing, the physical and chemical inspection, functional test, finishing, packaging, protective, delivered to users.

[0029] 本发明针对主蒸汽超级管道管嘴这种特殊的产品,运用特殊的工装得到产品。 [0029] The present invention is directed to a main steam pipe nozzle super this particular product, the use of special tooling to give the product. 本发明通过局部加热,在确保母管管坯的刚性情况下,利用弹簧座的自由伸縮作用,将压力通过母管管坯的刚性,传递到弹簧上,同时通过支撑杆和V型支撑砧,将冲头固定好,母管管坯在凹模座和弹簧座夹持下,整体下行,固定在支撑杆上不动的冲头反穿过预置孔(见图4),冲头、凹模形成密闭空间(见图3),冲头8将母管管坯1上的多余部分11冲压到母管管坯以形成管嘴壁部分10,即多余部分11被冲头反穿成为管嘴壁部分IO(图4)。 The present invention, by locally heating the tube shell in ensuring the rigidity of the parent case, the free expansion of the spring seat, the main pipe through a rigid tube pressure is transmitted to the spring, while the V-shaped support through the support bar and anvil, punch fixed, the mother tube at the tube die holder and the spring seat holder, the whole downlink, support rods fixed to the stationary counter-punch through the pre-placement hole (see FIG. 4), punch recesses mold closed space is formed (see FIG. 3), the punch 8 on the excess portion of the main pipe 1 into the main pipe ram tube 11 to form the nozzle tube wall section 10, i.e., excess portions of the punch 11 is to become the nozzle anti-wear wall portion IO (FIG. 4). 从而得到目标产品一管嘴13(见图6)。 To obtain a target product nozzle 13 (see FIG. 6).

0030] 采用本发明成功成型了1#、2#、3#、4#管嘴,经过检测,全部达到设计要求。 0030] The present inventors succeeded in forming the # 1, # 2, # 3, # 4 nozzles, through testing, all meet the design requirements.

Claims (2)

  1. 主蒸汽超级管道管嘴热挤压成型方法,其特征在于具体步骤为:1)通过炼钢,氧割钢锭冒口,冲孔,拉拔,毛坯热处理,成型毛坯管道,机械加工得到合格的母管管坯;2)按照超级管道的管嘴所在位置设置预置孔,选好凹模及配套专用定位销,装好凹模座;3)先将V形支撑砧吊上油压机平台,将支撑杆穿过母管管坯,吊下,同时按照工艺将主次弹簧基座摆好,安装弹簧座,然后将另一V形支撑砧吊上平台,控制好两者之间的位置,将穿过支撑杆的母管管坯放在弹簧座之上,同时确保支撑杆落在两边的V型支撑砧上;4)调整支撑杆在钢管内的位置,使支撑杆处于母管管坯内正中心位置,并将管道和支撑杆吊到V形支撑砧上,使母管管坯的预置孔中心垂直向上,同时调整支撑杆的位置,使管道预置孔中心线垂直于T型槽内中心线,调整冲头位置,使之处于预置孔 Main steam pipe nozzle super hot extrusion molding method, characterized in that the specific steps: 1) steelmaking, oxygen riser ingot cutting, punching, drawing, for heat treatment, pipe forming rough, machined to qualified female pipe tube; 2) according to pre-set the location of the nozzle hole of super pipe, and the selected die supporting special positioning pins, the die holder installed; 3) V-shaped first supporting anvil hanging on the hydraulic platforms, the support tube passes through the main pipe rod, hanging at the same time the process according to the primary and secondary spring base gracefully, the spring mounting seat, and the other V-shaped support anvil lifting platform, control the position between the two, through the mother pipe support bar placed over a spring seat tube, while ensuring that the V-shaped support falls either side of anvil supporting rod; 4) to adjust the position of the support rod in the pipe, so that the support rod standing in the center tube main pipes position, and the hanging support rod pipe and the V-shaped support anvil to the pre-placement hole mother tube center tube vertically upward, while adjusting the position of the support bar, the pipe holes pre-groove centerline T perpendicular to the center line, to adjust the position of the punch, so that in the pre-placement hole 正下方并记录位置,拉出冲头;5)将专用定位销放入凹模的孔中,专用挂钩勾住母管管坯两边的起吊专用槽,将凹模座平稳起吊到预置孔的上方,将专用定位销的锥形部分插入母管管坯的预置孔,起落数次,找到最佳位置,使专用定位销能够在行车移走时自由脱落,局部加热达到条件之后,迅速重复上述动作,使凹模对齐落位,完成冲头、预置孔、凹模三心定位工作;6)用局部加热器加热需要挤压部位,即预置孔周围φ400mm区域,局部加热前调整好管道内的挡火盘,另一端放置已经预装好的冲头,局部加热30-50分钟,温度为1250-1280℃,保温5-10分钟,待钢管加热区域与火焰颜色一致后,拉出局部加热器的挡火盘,推过冲头还原至原记录位置,迅速通过定位销使凹模落位,带走配套的专用定位销;7)开动压力机,开始挤压作业,作业时将支撑杆、母管管坯 And just below the recording position of the punch is pulled out; 5) dedicated positioning pins into holes in the die, the mother pipe special hook to hook lifting tube dedicated slot on both sides of the die holder to the preset lifting smooth bore above, the tapered portion of the positioning pin is inserted into dedicated holes pre-tube mother tube, the rise and fall several times to find the optimum position, so that a dedicated positioning pin can be freely removed off while driving, after local heating conditions to achieve, repeating the rapid operation, so that the seating alignment die, the punch is completed, the preset holes, positioning is three heart die; 6) with the local heater need to squeeze portion, i.e., the preset area around the hole φ400mm, localized heating adjusted before the pipeline fire blocking plate in the other end has been placed preassembled punch, local heating 30-50 minutes at 1250-1280 deg.] C, incubated for 5-10 minutes, after heating the steel pipe to be consistent with the flame color region, partial pull-out firestop heater plate, pushed through the punch restored to the original recording position, the positioning pin so quickly die seating, supporting a special positioning pins away; 7) press start to begin squeezing operation, the job support rod, tube mother pipe 及凹模座三者压实,挤压作业完成后,将母管管坯热处理、粗加工、无损探伤检测,水压试验,性能测试后得主蒸汽超级管道。 And three compaction die holder, squeezing operation is completed, the mother pipe heat treatment tube, rough, nondestructive inspection, hydrostatic testing, performance testing after steam super pipe winner.
  2. 2. 根据权利要求1所述的主蒸汽超级管道管嘴热挤压成型方法,其特征在于设置预置孔的具体方法是,在合格的母管管坯上确认四个预置孔的位置,确定挤压管嘴时的冲头和凹模的尺寸,按照体积不变原则,同时忽略管坯变形面是椭圆弧面的影响,标准管道取厚49. 8mm,局部加热氧化损失按厚0. 8mm计算,按公式(02-(j)2)XH=(小2-A小2) XS计算预置孔直径,式中①表示管嘴外圆平均直径,小表示管嘴内孔平均直径,H表示管嘴期望成型后的高度,S表示管坯可利用厚度。 The main steam according to claim 1 super pipe nozzle hot extrusion molding method, a method is provided wherein the specific pre-placement hole that confirms the position of the four holes in the pre-qualified mother pipe tube, determining the punch and the die dimensions of the extrusion nozzle, in accordance with the principle of constant volume, surface is a deformable tube while ignoring the influence of an elliptical arc, taking the standard conduit 49. 8mm thick, made thicker locally heated oxidation loss 0. 8mm calculated according to formula (02- (j) 2) XH = (2-A small small 2) XS pre-calculated pore diameter, wherein the nozzle outer ① represents the average diameter of the small hole represents the average diameter of the nozzle, H represents a desired height of the nozzle after molding, S represents a shell thickness may be utilized.
CN 200910273488 2009-12-31 2009-12-31 Hot extrusion molding method for pipe nozzle of main steam super pipeline CN101767172B (en)

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CN102211269A (en) * 2010-12-30 2011-10-12 武汉重工铸锻有限责任公司 Method for controlling phase position of nuclear power main steam super pipeline nozzle
CN101783191B (en) 2009-01-21 2012-05-16 中国核电工程有限公司 Super pipeline for nuclear power plant as well as manufacturing method thereof
CN102527828A (en) * 2011-12-26 2012-07-04 武汉重工铸锻有限责任公司 Dynamic level and balance follow control method of super pipeline nozzle forming process
CN102785183A (en) * 2012-08-31 2012-11-21 渤海重工管道有限公司 Method and device for positioning dual-hole diamond-shaped pin of hot extruded and extracted pipe nozzle of nuclear power main steam super pipeline
CN102794329A (en) * 2012-08-31 2012-11-28 渤海重工管道有限公司 Manufacturing equipment for nozzle of main steam super pipeline of nuclear power and pulling and extrusion manufacturing process for nozzle
CN102921764A (en) * 2012-07-10 2013-02-13 清华大学 Molding method and molding apparatus for pipe structure having nozzle boss
CN103658208A (en) * 2013-11-26 2014-03-26 北京首宏钢重型装备技术有限公司 One-step forming technology of nozzle of nuclear power main-steam super pipeline
CN103722036A (en) * 2013-12-17 2014-04-16 河北宏润重工股份有限公司 Drawing device and method of nuclear power super pipeline nozzles

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US4199857A (en) 1978-05-01 1980-04-29 Westinghouse Electric Corp. Tube bundle removal method and apparatus
EP0626232A1 (en) 1993-05-26 1994-11-30 Westinghouse Electric Corporation Device and method for sleeving an inside surface of a tube
CN101398165B (en) 2008-10-30 2010-06-02 贵州航天新力铸锻有限责任公司 Major vapour inlet/outlet joint pipe for nuclear plant steam generator and forging method thereof
CN101579715A (en) 2009-07-02 2009-11-18 无锡市新峰管业有限公司 Improved hyper pipeline pipe-branch forming process

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Publication number Priority date Publication date Assignee Title
CN101783191B (en) 2009-01-21 2012-05-16 中国核电工程有限公司 Super pipeline for nuclear power plant as well as manufacturing method thereof
CN102211269A (en) * 2010-12-30 2011-10-12 武汉重工铸锻有限责任公司 Method for controlling phase position of nuclear power main steam super pipeline nozzle
CN102527828A (en) * 2011-12-26 2012-07-04 武汉重工铸锻有限责任公司 Dynamic level and balance follow control method of super pipeline nozzle forming process
CN102921764A (en) * 2012-07-10 2013-02-13 清华大学 Molding method and molding apparatus for pipe structure having nozzle boss
CN102921764B (en) 2012-07-10 2014-10-22 清华大学 A method for forming a structural member having a tube and a nozzle boss forming means
CN102785183A (en) * 2012-08-31 2012-11-21 渤海重工管道有限公司 Method and device for positioning dual-hole diamond-shaped pin of hot extruded and extracted pipe nozzle of nuclear power main steam super pipeline
CN102794329A (en) * 2012-08-31 2012-11-28 渤海重工管道有限公司 Manufacturing equipment for nozzle of main steam super pipeline of nuclear power and pulling and extrusion manufacturing process for nozzle
CN102785183B (en) * 2012-08-31 2015-06-10 渤海重工管道有限公司 Method and device for positioning dual-hole diamond-shaped pin of hot extruded and extracted pipe nozzle of nuclear power main steam super pipeline
CN103658208A (en) * 2013-11-26 2014-03-26 北京首宏钢重型装备技术有限公司 One-step forming technology of nozzle of nuclear power main-steam super pipeline
CN103722036A (en) * 2013-12-17 2014-04-16 河北宏润重工股份有限公司 Drawing device and method of nuclear power super pipeline nozzles
CN103722036B (en) * 2013-12-17 2016-02-03 河北宏润核装备科技股份有限公司 One kind of nuclear super pipe nozzle apparatus and method of Drawing

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