CN102553965A - Tee joint manufacturing method - Google Patents
Tee joint manufacturing method Download PDFInfo
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- CN102553965A CN102553965A CN201210034909XA CN201210034909A CN102553965A CN 102553965 A CN102553965 A CN 102553965A CN 201210034909X A CN201210034909X A CN 201210034909XA CN 201210034909 A CN201210034909 A CN 201210034909A CN 102553965 A CN102553965 A CN 102553965A
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- threeway
- half part
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Abstract
The invention discloses a tee joint manufacturing method which comprises the following steps: heating a first plate slab, putting the plate slab in a tee joint half-part female die with a branch pipe, forming a tee joint upper half part with the branch pipe by a mail die, wherein the mail die has a plate slab compression end and a tee joint main pipe forming body; heating a second plate slab, putting the plate slab in a tee joint half-part female die without the branch pipe, forming a tee joint lower half part without the branch pipe by the mail die; welding the tee joint upper half part with the branch pipe and the tee joint lower half part without the branch pipe, forming a large-aperture tee joint with double welded joints. The tee joint manufacturing method provided by the invention can manufacture a large-aperture tee joint with double welded joints, can eliminate influences on welded joint quality caused by multiple hot working, and can simultaneously prevent the welded joints from bearing stress caused by the extrusion manufacturing process of the tee joint.
Description
Technical field
The present invention relates to engineering goods and make field, particularly a kind of pair of weld seam wide tee manufacturing approach.
Background technology
Threeway is a kind of pipe fitting commonly used, and in pipe-line constructions such as petroleum gas, the application of wide tee (maximum caliber threeway diameter reaches 1219mm at present) increases gradually.At present, the manufacture process of threeway mainly is to adopt suitable pipe, forms tee branch through the pressure process of pulling out, thus production threeway product.For the less threeway of diameter, can adopt seamless steel pipe, through the technology manufacturing of hot and cold extrusion molding.For the threeway more than the diameter 600mm,,, adopt hot-pressed mode to make so adopt the welded pipe base usually owing to there is not suitable seamless bloom.
Specifically, the process of welded pipe base hot extrusion production threeway is: (1) steel plate forms pipe after rolling welding; (2) heating of pipe blank is placed in the threeway mould, under the effect of forcing press, accomplishes the process of tee branch place's bulge, this process possibly carried out repeatedly repeatedly, that is to say, pipe will carry out heating for multiple times; (3) bulge place perforate is carried out the hot pressing of arm and is pulled out process, and this process also needs the pipe heating for multiple times; (4) threeway bulk heat treatmet.
Can find out that from above introduction and analysis the pipe of weldering system is in the process of making threeway, pipe and weld seam thereof will experience the process of heating and cooling for several times, and bigger variation can take place for material structure and performance; In addition, in hot extrusion process, the pipe weld seam will experience repeatedly distortion, this also properties of weld brought influence.Heating for multiple times can cause seam organization to change greatly, occurs obdurability easily and reduces, even be lower than the problem of engineering specification; Crimp then causes weld seam crackle to occur easily.
Adopt pipe to make the hot extrusion threeway, can't avoid the repeatedly hot-working and the load deflection of weld seam.Along with the raising of pipeline discharge pressure, the strength grade of threeway tubing and weld seam improves constantly, and weld seam is responsive more to hot-working and stress deformation, and this has just increased the manufacture difficulty of high-strength big-diameter threeway.
Summary of the invention
Technical problem to be solved by this invention provides a kind of hot-working butt welded seam quality of eliminating repeatedly and brings influence and avoid weld seam to bear the threeway manufacturing approach that threeway extruding manufacture process is brought stress.
For solving the problems of the technologies described above, the invention provides a kind of manufacturing approach of threeway, comprising:
Be positioned in three passband arms, the half part die after first slab heating, and formation threeway upper half belt props up tube portion under the effect of punch; Said punch has the slab compression end and formed body is responsible in threeway;
Be not with in the arm half part die being positioned over threeway after the heating of second slab, and second is not with a tube portion under the effect of punch, to form threeway;
Said threeway upper half belt is propped up tube portion and said threeway, and second is not with a tube portion welding, forms two weld seam wide tees.
Further, the width of said first slab and said second slab is greater than the threeway person in charge's diameter; The width of said first slab is greater than the width of second slab.
Further, the width of said first slab is 0.55 π D～0.8 π D; The section girth that said threeway upper half belt props up tube portion is 0.5 π D, and said D is the threeway predominant tube diameter.
Further, second is not 0.5 π D with the section girth of a tube portion for said threeway, and said D is the threeway predominant tube diameter.
Further, said threeway person in charge formed body is semicircle cylinder;
Said slab compression end is a cuboid, and length is responsible for the diameter of the semicircle face of formed body greater than threeway;
The maximum cross section of said slab compression end is fixed on the rectangle cross section that formed body is responsible in threeway, and equidistance protrudes at the two ends of semicircle face.
Further, the concave surface of said three passband arms, half part die is for taking the shape of the letter U, and parallelly from the two ends of concave surface extends outward two die inwalls, and vertically outwards there is a through hole in the bottom centre of the concave surface of die.
Further, said three passband arms, the half part die degree of depth is 2 times a threeway person in charge radius.
Further, said threeway is with the concave surface semicircular in shape of arm half part die, parallelly from the two ends of concave surface extends outward two die inwalls.
Further, not to be with the arm half part die degree of depth be that threeway is responsible for radius+20mm～threeway and is responsible for radius+50mm in said threeway.
Further, said threeway radius and the threeway of concave surface of being responsible for radius, three passband arms, the half part die of the semicircle face of formed body do not equate with the radius of the concave surface of arm half part die.
Further, said three passband arms half part and threeway do not lay respectively at threeway with 2 weld seams of arm half part welding and are responsible for to go up apart from 90 ° of arm opening directions and 270 ° and locate, and direction is parallel with threeway person in charge opening direction.
A kind of pair of weld seam wide tee manufacturing approach provided by the invention can be made two weld seam wide tees, can eliminate repeatedly the influence that hot-working butt welded seam quality is brought, and can avoid weld seam to bear the stress that threeway extruding manufacture process is brought simultaneously.
Description of drawings
Fig. 1 a is the front view of three general punch structures;
Fig. 1 b is the side view of three general punch structures;
Fig. 2 a is the front view of three passband arms, half part die structure;
Fig. 2 b is the cutaway view of three passband arms, half part die structure;
Fig. 3 a is that threeway is not with the front view of arm half part die;
Fig. 3 b is that threeway is not with the cutaway view of arm half part die;
Fig. 4 a is the front view of threeway upper half belt arm half part;
Fig. 4 b is the side view of threeway upper half belt arm half part;
Fig. 5 a be threeway second not with the front view of tube portion;
Fig. 5 b be threeway second not with the side view of tube portion;
Fig. 6 a is the front view of two weld seam wide tee structures;
Fig. 6 b is the side view of two weld seam wide tee structures.
The specific embodiment
A kind of pair of weld seam wide tee manufacturing technology that the embodiment of the invention provides comprises the mould that can adopt slab to make wide tee, and two weld seam wide tee manufacturing process.
The mould that can adopt slab to make wide tee comprises that punch (shown in Fig. 1 a, Fig. 1 b), three passband arms, half part die (shown in Fig. 2 a, Fig. 2 b) and threeway be not with arm half part die (shown in Fig. 3 a, Fig. 3 b).Punch has slab compression end 1 and is responsible for formed body 2 with threeway.Slab compression end 1 is a cuboid, and length is responsible for the diameter of formed body 2 semicircle faces greater than threeway; It is semicircle cylinder that formed body 2 is responsible in threeway.The maximum cross section of slab compression end 1 is fixed on the cross section that formed body 2 is responsible in threeway, and equidistance protrudes at the two ends of semicircle face, thereby forms the threeway wall thickness.The concave surface 4 of three passband arms, half part die is for taking the shape of the letter U, and parallelly from the two ends of concave surface extends outward two die inwalls 5, and vertically outwards there is a through hole 3 in die bottom centre.Three passband arms, the half part die degree of depth is that 4 radius is responsible in 2 times threeway, and the effect of through hole 3 is the effect compacted under tee branch at punch.Threeway is with the concave surface semicircular in shape of arm half part die 6, parallelly from the two ends of concave surface extends outward two die inwalls 7.Threeway is not that 4 radius+(20～50mm) are responsible in threeway with the arm half part die degree of depth.Radius and the threeway of concave surface that radius, three passband arms, the half part die of the semicircle face of formed body are responsible in threeway do not equate with the radius of the concave surface of arm half part die.
Two weld seam wide tee manufacturing approaches that the embodiment of the invention provides comprise:
Step 20, with after the heating of 2 blocks of slabs respectively in above-mentioned die for molding.Wherein, First slab is positioned in three passband arms, the half part die; The band arm half part width of plate slab of first slab is by (0.55～0.8) π D boil down to 0.5 π D; Becket forms arm place's bulge and threeway shoulder buildup area to flowing, and under the effect of punch, and the ripe tee branch moulding process formation of utilization is half part of the threeway upper half belt arm shown in Fig. 4 a, Fig. 4 b (its person in charge's section girth is 0.5 π D) like final molding; Be not with in the arm half part die being positioned over threeway after second slab heating, under the effect of punch, be shaped to shown in Fig. 5 a, Fig. 5 b threeway second be not with a tube portion (it is responsible for section girth is 0.5 π D).
Step 30, adopt existing welding procedure to carry out the butt welding moulding threeway two halves (shown in Fig. 4 b, Fig. 5 b), form two weld seam wide tees shown in Fig. 6 a, Fig. 6 b.This pair weld seam wide tee comprises the threeway person in charge 8, arm 3 and weld seam 10.Weld seam 10 positions are positioned at threeway to be responsible on 8 and to locate for 90 ° and 270 ° apart from arm 3 opening directions, and it is parallel that 8 opening directions are responsible in direction and threeway.
Step 40, the existing technology of utilization are carried out the outward appearance processing to threeway, form final threeway product.
A kind of pair of weld seam wide tee manufacturing technology provided by the invention can be made two weld seam wide tees.Threeway with adopting the manufacturing of single weld seam pipe is compared, and two weld seam threeways can be eliminated repeatedly the influence that hot-working butt welded seam quality is brought, and can avoid weld seam to bear the stress that threeway extruding manufacture process is brought simultaneously.The present invention is applicable to industry-by-industry or the engineering of using threeway, and is especially suitable for the wide tee that can't adopt seamless steel pipe to make.At present; Pipe-line constructions such as oil gas conveying are tending towards high-voltage large-capacity, and therefore pipe fitting all increases with the intensity and the bore of material, adopts two weld seam wide tees; Can eliminate or reduce the influence of hot-working and distortional stress butt welded seam quality, thereby effectively improve the threeway quality.Therefore, the application prospect of this invention is good.
It should be noted last that; The above specific embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to instance the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. a threeway manufacturing approach is characterized in that, comprising:
Be positioned in three passband arms, the half part die after first slab heating, and formation threeway upper half belt props up tube portion under the effect of punch; Said punch has the slab compression end and formed body is responsible in threeway;
Be not with in the arm half part die being positioned over threeway after the heating of second slab, and second is not with a tube portion under the effect of punch, to form threeway;
Said threeway upper half belt is propped up tube portion and said threeway, and second is not with a tube portion welding, forms two weld seam wide tees.
2. manufacturing approach according to claim 1 is characterized in that:
The diameter that the width of said first slab and said second slab is responsible for greater than threeway; The width of said first slab is greater than the width of second slab.
3. manufacturing approach according to claim 2 is characterized in that:
The width of said first slab is 0.55 π D～0.8 π D; Person in charge's section girth that said threeway upper half belt props up tube portion is 0.5 π D, and said D is the threeway predominant tube diameter.
4. manufacturing approach according to claim 2 is characterized in that:
Second is not 0.5 π D with person in charge's section girth of a tube portion for said threeway, and said D is the threeway predominant tube diameter.
5. manufacturing approach according to claim 1 is characterized in that:
It is semicircle cylinder that formed body is responsible in said threeway;
Said slab compression end is a cuboid, and length is responsible for the diameter of the semicircle face of formed body greater than threeway;
The maximum cross section of said slab compression end is fixed on the rectangle cross section that formed body is responsible in threeway, and equidistance protrudes at the two ends of semicircle face.
6. manufacturing approach according to claim 1 is characterized in that:
The concave surface of said three passband arms, half part die is for taking the shape of the letter U, and parallelly from the two ends of concave surface extends outward two die inwalls, and vertically outwards there is a through hole in the bottom centre of the concave surface of die.
7. manufacturing approach according to claim 6 is characterized in that:
Said three passband arms, the half part die degree of depth is that radius is responsible in 2 times threeway.
8. manufacturing approach according to claim 1 is characterized in that:
Said threeway is with the concave surface semicircular in shape of arm half part die, parallelly from the two ends of concave surface extends outward two die inwalls;
It is that radius+20mm～threeway person in charge radius+50mm is responsible in threeway that the arm half part die degree of depth is not with in said threeway.
9. manufacturing approach according to claim 5 is characterized in that:
Radius and the threeway of concave surface that radius, three passband arms, the half part die of the semicircle face of formed body are responsible in said threeway do not equate with the radius of the concave surface of arm half part die.
10. according to the manufacturing approach of each described threeway of claim 1-9, it is characterized in that,
Said three passband arms half part and threeway do not lay respectively at threeway with 2 weld seams of arm half part welding and are responsible for to go up apart from 90 ° of arm opening directions and 270 ° and locate, and direction is parallel with threeway person in charge opening direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034909.XA CN102553965B (en) | 2012-02-16 | 2012-02-16 | Tee joint manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034909.XA CN102553965B (en) | 2012-02-16 | 2012-02-16 | Tee joint manufacturing method |
Publications (2)
| Publication Number | Publication Date |
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| CN102553965A true CN102553965A (en) | 2012-07-11 |
| CN102553965B CN102553965B (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210034909.XA Active CN102553965B (en) | 2012-02-16 | 2012-02-16 | Tee joint manufacturing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962651A (en) * | 2012-12-14 | 2013-03-13 | 宝鸡市守善管件有限公司 | Method for manufacturing a large-outside-diameter equal-diameter titanium tee joint |
| CN107044575A (en) * | 2017-06-03 | 2017-08-15 | 江苏兴洋管业股份有限公司 | A kind of metal three-way pipe of hot extrusion molding |
| CN109487117A (en) * | 2018-12-29 | 2019-03-19 | 江苏万源新材料股份有限公司 | A kind of production technology of reducing copper threeway |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100968A (en) * | 1978-01-25 | 1979-08-09 | Kajiwara Tsugite Kougiyou Kk | Production of high neck t shaped pipe joint |
| JPS5728632A (en) * | 1980-07-24 | 1982-02-16 | Sumitomo Metal Ind Ltd | Manufacture of side seamed t-shaped pipe joint |
| JPS5728622A (en) * | 1980-07-24 | 1982-02-16 | Sumitomo Metal Ind Ltd | Manufacture of t-shaped side seamed pipe joint |
| JP2001047128A (en) * | 1999-08-02 | 2001-02-20 | Takahashi Techno:Kk | Manufacture of pipe joint |
| CN101352747A (en) * | 2008-09-04 | 2009-01-28 | 天津市大港区顺力汽车零部件厂 | Technique for molding inclined connector saddle between main pipe and branch pipe as well as welding method |
| KR20100116057A (en) * | 2009-04-21 | 2010-10-29 | 노성근 | T-shape pipe for duct |
-
2012
- 2012-02-16 CN CN201210034909.XA patent/CN102553965B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100968A (en) * | 1978-01-25 | 1979-08-09 | Kajiwara Tsugite Kougiyou Kk | Production of high neck t shaped pipe joint |
| JPS5728632A (en) * | 1980-07-24 | 1982-02-16 | Sumitomo Metal Ind Ltd | Manufacture of side seamed t-shaped pipe joint |
| JPS5728622A (en) * | 1980-07-24 | 1982-02-16 | Sumitomo Metal Ind Ltd | Manufacture of t-shaped side seamed pipe joint |
| JP2001047128A (en) * | 1999-08-02 | 2001-02-20 | Takahashi Techno:Kk | Manufacture of pipe joint |
| CN101352747A (en) * | 2008-09-04 | 2009-01-28 | 天津市大港区顺力汽车零部件厂 | Technique for molding inclined connector saddle between main pipe and branch pipe as well as welding method |
| KR20100116057A (en) * | 2009-04-21 | 2010-10-29 | 노성근 | T-shape pipe for duct |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962651A (en) * | 2012-12-14 | 2013-03-13 | 宝鸡市守善管件有限公司 | Method for manufacturing a large-outside-diameter equal-diameter titanium tee joint |
| CN107044575A (en) * | 2017-06-03 | 2017-08-15 | 江苏兴洋管业股份有限公司 | A kind of metal three-way pipe of hot extrusion molding |
| CN109487117A (en) * | 2018-12-29 | 2019-03-19 | 江苏万源新材料股份有限公司 | A kind of production technology of reducing copper threeway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102553965B (en) | 2014-05-14 |
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