CN201516449U - High-strength straight seam butt welding three-way die - Google Patents

High-strength straight seam butt welding three-way die Download PDF

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Publication number
CN201516449U
CN201516449U CN2009202462993U CN200920246299U CN201516449U CN 201516449 U CN201516449 U CN 201516449U CN 2009202462993 U CN2009202462993 U CN 2009202462993U CN 200920246299 U CN200920246299 U CN 200920246299U CN 201516449 U CN201516449 U CN 201516449U
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CN
China
Prior art keywords
mould
threeway
die
counterdie
butt welding
Prior art date
Application number
CN2009202462993U
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Chinese (zh)
Inventor
冯斌
魏秦文
李玉卓
岳莎莎
李烨峥
刘宇
石荣满
祝鹏
常增顺
刘金生
Original Assignee
中国石油天然气集团公司
中国石油天然气管道局
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Application filed by 中国石油天然气集团公司, 中国石油天然气管道局 filed Critical 中国石油天然气集团公司
Priority to CN2009202462993U priority Critical patent/CN201516449U/en
Application granted granted Critical
Publication of CN201516449U publication Critical patent/CN201516449U/en

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Abstract

The utility model discloses a high-strength straight seam butt welding tee die of a large-caliber thick-wall tee, which relates to the field of the manufacturing technology for manufacturing metal pipes and molding dies through a non-rolling mode. The die comprises an upper die (1), a lower die (2)and auxiliary dies (3); the upper die (1)and the lower die (2)are longitudinally opposite to each other, and mounting holes I (4)and lifting lugs I (5)are installed at the two ends of the upper die (1); and the two ends of the lower die (2)are respectively connected with the auxiliary dies (3)through holding screws (8), lifting lugs II (7)are arranged on the two sides of the lower die (2); mounting holes II (6)are installed at the lower part of the lower die (2), and the holding screws (8)are installed at the lower parts of the lifting lugs II (7). High-strength straight seam butt welding tees manufactured by the die have the advantages of small welding seam distortion, uniform thickness of main branch pipe wall, good local reinforcement effect and high forming quality.

Description

High intensity straight-line joint butt welding threeway mould
Technical field
The utility model is a kind of high intensity straight-line joint butt welding threeway mould of heavy caliber thick wall threeway, relates to the manufacture technology field of producing metal tube and rolled-up stock with non-rolling mode.
Background technology
The production majority of domestic heavy caliber extruded piping branch tee is a semi-empirical mode, and machining accuracy is poor, efficient is low, ratio of briquetting is not high.The processing technology of existing heavy caliber thick wall threeway mainly comprises operations such as flattening, bulge, perforate drawing, shaping, groove.Wherein, the bulge operation all need repeat more than 3 times repeatedly, can satisfy threeway to the person in charge, arm requirement for height; Drawing procedure need carry out just processing required threeway blank more than 2 times.Arm has enough height during for the assurance bulge, and base pipe blanking surplus is generally bigger than normal.Therefore, there is certain defective in the processing technology mould structure of heavy caliber thick wall threeway at present, and the extrusion molding difficulty is big, complex procedures, and operation easier is big, has raw material and energy waste, and efficient is low, finished product rate variance, cost height.
Under this technology, for satisfying threeway reinforcement requirement, usually need to increase blank pipe blank size, the blank radial dimension increases, after the blank pipe flattened, highly excessive, extruding force required to increase, the machine stroke limiting that is stressed, thereby adopt and increase radial dimension and carry out enterprise's above wide tee of processing Dn1000mm that threeway produces and all have certain difficulty.And, during extruding, cause shell to flatten the back easily from central region sinking, clout is excessive, and during shaping, the alluvial of shoulder metal material is easy to form fold, the primary branch shoulder is plump unusually.For this reason, part adopts the method that increases blank radial dimension surplus that the primary branch shoulder is supplied metal, thereby avoids because the excessive mass defect that causes of radial dimension.According to the performance characteristics of metal fever process principle and high-strength line-pipe steel, axial dimension is excessive, causes blank threeway end shrinkage easily, subsides; Surplus is too small, then is difficult to supply the deformation that primary branch shoulder metal flow causes.And, according to the process characteristic of hot forming, in the extrusion process, the blank metal not only flows at vertical direction, at the primary branch shoulder, it flows downward on the one hand, on the one hand is subjected to the effect of counterdie primary branch transition region support reaction, has along die radially to the trend of two side flow, simultaneously, blank surfaces externally and internally and interior metal are subjected to function influences such as mould rubbing action, lubricating condition and metal inside dislocation, pinning, also present certain irregular.The another one outstanding feature of hot-pressed three-way pipe fitting technology is that variation of ambient temperature is big, blank temperature difference is big, in the extrusion process, there is big temperature difference in the blank surfaces externally and internally, during the bulge drawing, because of arts demand, need heat-treat base pipe top, during extruding, the very fast cooling in blank outside, blank and mould rubbing action, interior metal frictional force all can produce big heat, and there are processes such as complicated dynamic recrystallization, work hardening in the blank metal, the base pipe is through heating for multiple times, the pipe line steel structural constituent changes, and crystal grain is thick, and mechanical performance descends.Therefore, heavy caliber vertical masonry joint butt welding threeway needs to keep mechanical performance requirements such as position while welding chemical composition, intensity, impact flexibility simultaneously under the situation that satisfies the required condition that is shaped.
The utility model content
The purpose of this utility model is to design the high intensity straight-line joint butt welding threeway mould that a kind of seam deformation is less, the primary branch wall thickness is even, local reinforcement is effective, forming quality is high.
The utility model blank is responsible for distortion up and down evenly, neatly, and weld seam position metal flow is less, change in size is regular, and mechanical performance is higher.Adopt radial and axial compensation arm and primary branch shoulder metal, can remedy that existing technology blank metallic radial deformation rate is big, the shortcoming of forming quality difference.A drawing aligning performance is good, can guarantee the positioning accuracy that the blank arm is repeatedly processed, and intensity height, bearing capacity are strong, can obtain thickness of pipe wall high-strength thick threeway uniformly.Adopt the utility model that existing oil and gas pipes hot-pressed three-way pipe fitting mould is improved forming quality height, simple, easy to operate, economical rationality.
The used shaping dies of this vertical masonry joint butt welding threeway extrusion molding mainly is made up of upper die and lower die, attached mould etc. as shown in Figure 1 and Figure 2.Upper die and lower die are relative up and down, and there are installing hole I and hanger I in the patrix two ends; The counterdie two ends respectively are connected with attached mould by holding screw, and respectively there is hanger II the counterdie both sides, and installing hole II is arranged below, in the bottom of hanger II, holding screw are housed.
Wherein:
The patrix bottom is horizontal semicanal shape hollow, is that radius is the rectangular mould steel plate of threeway nominal diameter+5~20mm semicanal shape hollow of 0.5 times;
Counterdie as shown in Figure 3, Figure 4, counterdie top is horizontal semicanal shape hollow, be that radius is the rectangular mould steel plate of threeway nominal diameter+5~20mm semicanal shape hollow of 0.5 times, and there is the circular hole of downward perforation at the middle part of semicanal shape hollow;
Attached mould such as Fig. 5, shown in Figure 6, there is semicanal shape hollow at the middle part on the attached mould, is that radius is the rectangular steel plates of threeway nominal diameter+5~20mm semicanal shape hollow of 0.5 times, and hook is equipped with in the both sides, bottom, and attached mould and counterdie axially parallel direction length are 100~200mm;
Drawing head such as Fig. 7, shown in Figure 8, drawing head are flat taper shape, and its middle part vertical direction is provided with rectangular through slot, and a vertical with it deep-slotted chip breaker is respectively arranged on the groove both sides; A journal stirrup respectively is equipped with on both sides on the drawing head, and T-shaped drawing bar is the oval head T-shaped.
Attached mould is equipped with hook by both sides, bottom, both sides is fixed on the counterdie two ends, make the interior concave bottom surface of attached mould slightly exceed concave bottom surface certain distance in the counterdie, tighten holding screw.
The hanger II handling of patrix hanger I, counterdie, patrix is fixed by bolts to pressure machine base top by installing hole I, and counterdie is fixed by bolts to the pressure machine base bottom by installing hole II.Upper die and lower die are reserved suitable distance between the two, brush lubricant at the counterdie inwall.
The utility model blank is responsible for distortion up and down evenly, neatly, and weld seam position metal flow is less, change in size is regular, and mechanical performance is higher.Adopt radial and axial compensation arm and primary branch shoulder metal, can remedy that existing technology blank metallic radial deformation rate is big, the shortcoming of forming quality difference.A drawing aligning performance is good, can guarantee the positioning accuracy that the blank arm is repeatedly processed, and intensity height, bearing capacity are strong, can obtain thickness of pipe wall high-strength thick threeway uniformly.Adopt the utility model that existing oil and gas pipes hot-pressed three-way pipe fitting mould is improved forming quality height, simple, easy to operate, economical rationality.
Description of drawings
Fig. 1 high intensity straight-line joint butt welding threeway mode host visual pattern
Fig. 2 high intensity straight-line joint butt welding threeway mould A-A is to the structure cutaway view
Fig. 3 counterdie front view
Fig. 4 counterdie right view
The attached mould front view of Fig. 5
The attached mould right view of Fig. 6
Fig. 7 drawing front view half sectional view
Fig. 8 drawing right view half sectional view
1-patrix 2-counterdie wherein
The attached mould 4-of 3-installing hole I
5-hanger I 6-installing hole II
7-hanger II 8-holding screw
9-hook 10-drawing head
11-groove 12-deep-slotted chip breaker
13-journal stirrup 14-drawing bar
15-threeway blank
The specific embodiment
Embodiment. further specify the utility model below in conjunction with accompanying drawing.This example is to WPHY70, the mould of Φ 1067 * 42mm threeway.
As shown in Figure 1 and Figure 2, high intensity straight-line joint butt welding threeway mould mainly is made up of patrix 1, counterdie 2, attached mould 3 etc.Patrix 1 is relative up and down with counterdie 2, and there are installing hole I 4 and hanger I 5 in patrix 1 two ends; Counterdie 2 two ends respectively are connected with attached mould 3 by holding screw 8, and respectively there is hanger II 7 counterdie 2 both sides, and installing hole II 6 is arranged below, in the bottom of hanger II 7, holding screw 8 are housed.
Wherein:
Patrix 1 bottom is horizontal semicanal shape hollow, is that radius is the rectangular mould steel plate of threeway nominal diameter+15mm semicanal shape hollow of 0.5 times;
Counterdie 2 as shown in Figure 3, Figure 4, counterdie 2 tops are horizontal semicanal shape hollow, be that radius is the rectangular mould steel plate of threeway nominal diameter+15mm semicanal shape hollow of 0.5 times, and there is the circular hole of downward perforation at the middle part of semicanal shape hollow;
Attached mould 3 is as Fig. 5, shown in Figure 6, and there is semicanal shape hollow at the middle part on the attached mould 3, is that radius is the rectangular steel plates of threeway nominal diameter+15mm semicanal shape hollow of 0.5 times, and hook 9 is equipped with in the both sides, bottom, and attached mould 3 is 200mm with counterdie 2 axially parallel direction length;
Drawing 10 is characterized in that as Fig. 7, shown in Figure 8: drawing 10 is flat taper shape, and its middle part vertical direction is provided with rectangular through slot 11, and a vertical with it deep-slotted chip breaker 12 is respectively arranged on groove 11 both sides; A journal stirrup 13 respectively is equipped with on both sides in the drawing 10, and T-shaped drawing bar 14 is the oval head T-shaped.
Attached mould 3 is equipped with hook 9 by both sides, bottom, both sides is fixed on counterdie 2 two ends, make attached mould 3 interior concave bottom surface slightly exceed concave bottom surface certain distances in the counterdie 2, tighten holding screw 8.
Patrix 1 usefulness hanger 15, counterdie 2 usefulness hanger II 7 handlings, patrix 1 is fixed by bolts to pressure machine base top by installing hole I 4, and counterdie 2 is fixed by bolts to the pressure machine base bottom by installing hole II 6.Patrix 1 and counterdie 2 are reserved suitable distance between the two, brush lubricant at counterdie 2 inwalls.
The blank pipe is pressed into flat tube, be heated to more than 1000 ℃ of insulation 30min, put it into the mould that assembles, the starting pressure machine, patrix 1 presses down, heave at the flat tube middle part, repeat this process, meet the tee branch requirement until the flat tube height, after the cooling, heave the position opening at the blank middle part, make threeway blank 15.
Threeway blank 15 is heated to more than 1000 ℃ of insulation 30min, puts it into the mould that assembles, and gos deep into journal stirrup 13 with the handling bar, with drawing 10 parallel threeway blank 15 middle part of delivering to, puts down drawing 10, and extraction handling bar.Drawing bar 14 is sent drawing 10 to along groove 11, rotates drawing bar 14 and also makes it accurately to be installed in the deep-slotted chip breaker 12.
After assembling, the starting pressure machine presses down, patrix 1 begins descending thereupon, meanwhile, traction drawing bar 14, patrix 1 and drawing bar 14 movement velocitys keep suitably balanced, the tractive force of drawing 10 a tension dead man 14 is descending, and behind patrix 1 and counterdie 2 matched moulds, drawing 10 is extracted out by threeway blank 15 thereupon.
In this example, threeway material: WPHY70; Threeway size: Φ 1067 * 42mm; Base pipe size: Φ 1300 * 40 * 1610mm; Threeway blank 15 maximums thicken 〉=52mm;
High intensity straight-line joint butt welding threeway mould: specification Φ 1087 * 40mm; Patrix 1, counterdie 2 apparent sizes: 1750 * 1400 * 850mm; Attached mould apparent size 1600 * 20 * 600
High intensity straight-line joint butt welding threeway seam deformation with this routine mould production is less, the primary branch wall thickness is even, local reinforcement is effective, forming quality is high.

Claims (5)

1. the high intensity straight-line joint butt welding threeway mould of a heavy caliber thick wall threeway is characterized in that it mainly is made up of patrix (1), counterdie (2), attached mould (3); Patrix (1) is relative up and down with counterdie (2), and there are installing hole I (4) and hanger I (5) in patrix (1) two ends; Counterdie (2) two ends respectively are connected with attached mould (3) by holding screw (8), and respectively there is hanger II (7) counterdie (2) both sides, and installing hole II (6) is arranged below, and holding screw (8) is equipped with in the bottom in hanger II (7).
2. high intensity straight-line joint butt welding threeway mould according to claim 1 is characterized in that described patrix (1) for the bottom is horizontal semicanal shape hollow, is that radius is the rectangular mould steel plate of threeway nominal diameter+5~20mm semicanal shape hollow of 0.5 times.
3. high intensity straight-line joint butt welding threeway mould according to claim 1, it is characterized in that described counterdie (2) is horizontal semicanal shape hollow for top, be that radius is the rectangular mould steel plate of threeway nominal diameter+5~20mm semicanal shape hollow of 0.5 times, and there is the circular hole of downward perforation at the middle part of semicanal shape hollow.
4. high intensity straight-line joint butt welding threeway mould according to claim 1, it is characterized in that described attached mould (3) has semicanal shape hollow for last middle part, be that radius is the rectangular steel plates of threeway nominal diameter+5~20mm semicanal shape hollow of 0.5 times, hook (9) is equipped with in the both sides, bottom, and attached mould (3) is 100~200mm with counterdie (2) axially parallel direction length.
5. high intensity straight-line joint butt welding threeway mould according to claim 1 is characterized in that described drawing head (10) is flat taper shape, and its middle part vertical direction is provided with rectangular through slot (11), and a vertical with it deep-slotted chip breaker (12) is respectively arranged on groove (11) both sides; Drawing head (10) is gone up both sides one journal stirrup (13) respectively is housed, and T-shaped drawing bar (14) is the oval head T-shaped.
CN2009202462993U 2009-10-19 2009-10-19 High-strength straight seam butt welding three-way die CN201516449U (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103920744A (en) * 2014-05-04 2014-07-16 唐山诚达建设集团有限公司 Integrated processing device with branch pipe fitting
CN103962408A (en) * 2014-05-29 2014-08-06 河北宏润重工股份有限公司 Extrusion forming mould for branch pipes of main nuclear pipeline
CN104959933A (en) * 2015-06-30 2015-10-07 广东立丰管道科技有限公司 Clamp for drawing thin-wall stainless steel tee pipe
CN105032982A (en) * 2015-06-11 2015-11-11 沈阳东管电力科技集团股份有限公司 Three-way hot pressing process
CN106944495A (en) * 2017-03-03 2017-07-14 江苏兴洋管业股份有限公司 A kind of oversize two phase stainless steel threeway integral forming method
CN107597933A (en) * 2017-09-01 2018-01-19 上海航天精密机械研究所 More parts building mortions and manufacturing process
CN108856342A (en) * 2018-06-28 2018-11-23 江阴市天柠管道有限公司 A kind of production technology of the positive threeway of butt welding Y type
CN110355323A (en) * 2019-07-05 2019-10-22 河北沧海核装备科技股份有限公司 A kind of processing technology of threeway or header disposal molding

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103920744A (en) * 2014-05-04 2014-07-16 唐山诚达建设集团有限公司 Integrated processing device with branch pipe fitting
CN103920744B (en) * 2014-05-04 2016-01-27 唐山诚达建设集团有限公司 A kind of band arm pipe fitting one process equipment
CN103962408A (en) * 2014-05-29 2014-08-06 河北宏润重工股份有限公司 Extrusion forming mould for branch pipes of main nuclear pipeline
CN105032982A (en) * 2015-06-11 2015-11-11 沈阳东管电力科技集团股份有限公司 Three-way hot pressing process
CN104959933A (en) * 2015-06-30 2015-10-07 广东立丰管道科技有限公司 Clamp for drawing thin-wall stainless steel tee pipe
CN106944495A (en) * 2017-03-03 2017-07-14 江苏兴洋管业股份有限公司 A kind of oversize two phase stainless steel threeway integral forming method
CN106944495B (en) * 2017-03-03 2018-10-02 江苏兴洋管业股份有限公司 A kind of oversize two phase stainless steel threeway integral forming method
CN107597933A (en) * 2017-09-01 2018-01-19 上海航天精密机械研究所 More parts building mortions and manufacturing process
CN107597933B (en) * 2017-09-01 2019-01-18 上海航天精密机械研究所 Multi-pass part forming device and manufacturing process
CN108856342A (en) * 2018-06-28 2018-11-23 江阴市天柠管道有限公司 A kind of production technology of the positive threeway of butt welding Y type
CN110355323A (en) * 2019-07-05 2019-10-22 河北沧海核装备科技股份有限公司 A kind of processing technology of threeway or header disposal molding

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