CN1050835A - Variable-diameter special-shaped seamless metal pipe bend forming method - Google Patents
Variable-diameter special-shaped seamless metal pipe bend forming method Download PDFInfo
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- CN1050835A CN1050835A CN 90106692 CN90106692A CN1050835A CN 1050835 A CN1050835 A CN 1050835A CN 90106692 CN90106692 CN 90106692 CN 90106692 A CN90106692 A CN 90106692A CN 1050835 A CN1050835 A CN 1050835A
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Abstract
The invention provides a kind of reducing metal bends forming method, is to be applicable in the pipe-line system of industries such as petrochemical industry, shipbuilding, wine brewing, pharmacy that pipe fitting welding commonly used is with key technology in the work of reducing metal bends.It is to be mounted with the left die 2 right dies 3 that connect with die shoe 1 adapter sleeve 5 bandings on forcing press, puts into pressure head 4 in the blank 9 in the sleeve 6 on the die body of the synthetic left and right sides, upwards places the molding tool that depression bar 7 and cope match-plate pattern 8 are formed again.In the die hole of left die 2 right dies 3 and guide 6, be coated with during compacting containing the lubricant of saponification liquor, it utilize the pressure function once cold push molded.All in allowed band, product can reach the quality standard of advanced countries such as U.S. ASTM, ANSI and German DIN for defective, dimensional discrepancys such as shaping efficiency height, product surface are non-wrinkled, crackle, pipe.
Description
The present invention relates to a kind of reducing metal bends forming method, is to be applicable in the pipe-line system of industries such as petrochemical industry, shipbuilding, wine brewing medicine that pipe fitting welding commonly used is with key production technology in the work of reducing metal bends.
In prior art, the moulding of reducing metal bends is the relatively technology of difficulty always, wherein the reducing head of carbon element steel adopts the way that adds heat-shrink tube mold pressing brake forming mostly, moulding process is numerous and diverse, product quality is not good enough, major defects such as surperficial fold, crackle, pipe usually take place, and the profile that has is recessed flat outstanding, surpasses permissible variation.
The purpose of this invention is to provide a kind of process of utilizing efficient, the high-quality of reducing metal bends that forcing press and a cold moudling of mould welding uses.Defectives such as fold, crackle, pipe do not appear in the product of moulding, and the geomery tolerance all meets relevant quality requirement and can reach advanced country's standard.
The invention provides a kind of reducing metal bends forming method, it is characterized in that on forcing press, being mounted with the right die of left die [2] [3] that connects by die shoe [1] and adapter sleeve [5] banding, push down the guide [6] of setting circle with adapter sleeve [5], push down by depression bar [7] with cope match-plate pattern [8] and can be placed on the top that the pressure head [4] on blank [9] flat-top formed and have the side, large aperture to have the small-bore to have the reducing elbow die group of same vertical center line, earlier will the metal tube through being up to the standards when making reducing elbow making a collection of upper end by arts demand is the blank [9] of wedged bottom for the flat-top lower end, after annealing, put in the guide [6], the longest dimension place of blank [9] is that the tip, bottom aligns elbow die outer side edges limit A, lay pressure head [4] depression bar [7] and cope match-plate pattern [8] successively on the flat-top of blank [9] upper end, weakness B point in the bottom of pressure head [4] and elbow die outer side edges limit A are on the vertical plane of same diameter, the big stomidium footpath on the reducing elbow die top of being made up of the right die of left die [2] [3] is basic identical with blank [9] metal pipe material external diameter, and selected suitable tolerance fit arranged, scribble the lubricant that contains the saponification liquor composition in the elbow die, forcing press is colded pressing to push and can be made the reducing elbow moulding after cope match-plate pattern [8] progressively forces blank [9] all to enter into the elbow die that closes up with left die [2] and right die [3] combination, dismounting adapter sleeve [5] and die shoe [1], decompose left die [2] and take out pressure head [4] with right die [3], blank [9] pipe end finished edge is eliminated the two ends allowance, and shaping work is promptly all finished.Its left die [2], right die [3] be about two fully symmetry, respectively be shaped in the body half with the identical die of reducing elbow outside profile, going to the bottom and going up the top after left side die [2] and right die [3] amalgamation is shaped on respectively and die shoe [1], the taper seat of adapter sleeve [5] taper hole corresponding matching, its large aperture need place the center position of end face.Its pressure head [4] has cylinder with the metal tube same outer diameter as for top, the bottom has the perspective plane identical with the metal tube internal diameter, the one side has the profile that is same as the reducing elbow inner surface, and pressure head [4] can adopt securing member to be connected with depression bar [7] and make one.
The present invention compared with prior art, can high efficiency finish in high quality the reducing metal bends molding procedure, make product can satisfy the needs of domestic and international production.Owing to reached the standard of advanced country.Accessory outlet can be provided fully and use on the boats and ships and various device device of ordering goods abroad.
Accompanying drawing: reducing metal bends forming method flow diagram
Parts title in the figure:
1. die shoe 2. left die 3. right die 4. pressure heads 5. adapter sleeves 6. guides 7. depression bars 8. cope match-plate patterns 9. blanks
An accompanying drawings specific embodiment of the present invention: latus rectum 3 " * 2 1/2 " bending radius 3 of making the carbon element steel " reducing elbow can by make earlier shown in the accompanying drawing die shoe [1] that an external diameter φ 330 thick 80 has the oblique 6 ° conical bore of the every inclination of big stomidium footpath φ 228mm, and external diameter φ 310 thick 170 lower ends have big stomidium footpath φ 228; the oblique 6 ° of dark 65mm conical bores of every inclination, the upper end is shaped on φ 140
+ 0.04Through hole, middle also have an internal diameter φ 157 dark 15
-0.10The adapter sleeve [5] in setting circle seat hole.Left side die [2] and right die [3] respectively are that height and length are 228, the cuboid of wide 114mm, up and down the two planes taper seat of respectively making 6 ° at small end circular diameter φ 216 one-sided angles of inclination until around till the square planar, draw the radius of radius R 114mm to one of them center, side by last planar central, by top Circularhole diameter φ 89.4 ± 0.05, the size of side Circularhole diameter φ 73 ± 0.05 is made half die of 90 ° of reducing elbows of the bright and clean evenly gentle transition of surface smoothing.Guide [6] is external diameter φ 140, internal diameter φ 89.4 ± 0.05 overall heights 265, and going to the bottom, it is high by 15 to be provided with external diameter φ 155
+ 0.10The cylindrical shell of mm positioning round table.Cope match-plate pattern [8] is thick about 40, square plate that length and width are 240mm.Pressure head [4] top is the cylinder of external diameter φ 89.1 ± 0.05 high 30mm, and the maximum outside diameter 82mm one side of lower end has the profile that is same as the reducing elbow inner surface.Depression bar [7] is the cylinder of external diameter φ 82 long 235mm.As the height of forcing press allow and molding at one's leisure pressure head [4] also can adopt securing member to be connected with depression bar [7] or make one.More than each part of all moulds all can use the modified rear surface of Fine Steel Casting iron material quench hardening No. 45.Blank [9] is the flat-top cross section above being, for the purpose of economical with materials, gives the difference that calculates outside arc length in the elbow earlier, will make angular cut below it, and total allowance is about length overall about 15%.Blank [9] is placed in the guide [6] it and goes up and place pressure head [4] and depression bar [7] cope match-plate pattern [8] remains on the same vertical center line depression bar [7] and pressure head [4], on the same diameter vertical plane of the formed die group of the B point aligning right die of left die [2] [3] the outer side edges limit A of pressure head [4].Assembled height when to be pressed is about 1130mm, and the total height of the set of molds behind the finishing type is about 530mm.Cold die domestic demand of pushing die group when pressing is coated with to contain the lubricant of saponification liquor, the forcing press cold conditions extruding of available 300T, one-shot forming, remove die shoe [1] and adapter sleeve [5] and separate left die [2] and right die [3] taking-up pressure head [4], blank [9] two ends are cut out groove and surplus, surface inspection carries out promptly all finishing after artificial aging is handled.The product of making by the present invention can reach advanced country's standards such as U.S. ASTM234, ANSIB16.9 and West Germany DIN86090.
Claims (3)
1, a kind of reducing metal bends forming method, it is characterized in that on forcing press, being mounted with the right die of left die [2] [3] that connects by die shoe [1] and adapter sleeve [5] banding, push down the guide [6] of setting circle with adapter sleeve [5], push down by depression bar [7] with cope match-plate pattern [8] and can be placed on the top that the pressure head [4] on blank [9] flat-top formed and have the side, large aperture to have the small-bore to have the reducing elbow die group of same vertical center line, earlier will the metal tube through being up to the standards when making reducing elbow making a collection of upper end by arts demand is the blank [9] of wedged bottom for the flat-top lower end, after annealing, put in the guide [6], the longest dimension place of blank [9] is that the tip, bottom aligns elbow die outer side edges limit A, lay pressure head [4] depression bar [7] and cope match-plate pattern [8] successively on the flat-top of blank [9] upper end, weakness B point in the bottom of pressure head [4] and elbow die outer side edges limit A are on the vertical plane of same diameter, the big stomidium footpath on the reducing elbow die top of being made up of the right die of left die [2] [3] is basic identical with blank [9] metal pipe material external diameter, and selected suitable tolerance fit arranged, scribble the lubricant that contains the saponification liquor composition in the elbow die, forcing press is colded pressing to push and can be made the reducing elbow moulding after cope match-plate pattern [8] progressively forces blank [9] all to enter into the elbow die that closes up with left die [2] and right die [3] combination, dismounting adapter sleeve [5] and die shoe [1], decompose left die [2] and take out pressure head [4] with right die [3], blank [9] pipe end finished edge is eliminated the two ends allowance, and shaping work is promptly all finished.
2, forming method according to claim 1, it is characterized in that described left die [2], right die [3] be about two fully symmetry, respectively be shaped in the body half with the identical die of reducing elbow outside profile, going to the bottom and going up the top after left side die [2] and right die [3] amalgamation is shaped on respectively and die shoe [1], the taper seat of adapter sleeve [5] taper hole corresponding matching, its large aperture need place the center position of end face.
3, forming method according to claim 1, it is characterized in that described pressure head [4] has cylinder with the metal tube same outer diameter as for top, the bottom has the perspective plane identical with the metal tube internal diameter, the one side has the profile that is same as the reducing elbow inner surface, and pressure head [4] can adopt securing member to be connected with depression bar [7] and make one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106692 CN1050835A (en) | 1990-08-01 | 1990-08-01 | Variable-diameter special-shaped seamless metal pipe bend forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106692 CN1050835A (en) | 1990-08-01 | 1990-08-01 | Variable-diameter special-shaped seamless metal pipe bend forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1050835A true CN1050835A (en) | 1991-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106692 Pending CN1050835A (en) | 1990-08-01 | 1990-08-01 | Variable-diameter special-shaped seamless metal pipe bend forming method |
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| Country | Link |
|---|---|
| CN (1) | CN1050835A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307286C (en) * | 2001-06-13 | 2007-03-28 | Abb拉默斯环球有限公司 | Pyrolysis heater with paired burner zoned firing system |
| CN100357051C (en) * | 2005-10-11 | 2007-12-26 | 杭州电子科技大学 | Digit controlled constant force feeding ultrasonic plug extruder |
| CN100384558C (en) * | 2004-12-31 | 2008-04-30 | 广东工业大学 | Thin-wall tube curvature-variable push-bending process and die |
| CN100421873C (en) * | 2006-04-17 | 2008-10-01 | 江苏华阳金属管件有限公司 | Method for forming pipe fittings by cold extrusion |
| CN100564981C (en) * | 2008-03-27 | 2009-12-02 | 二重集团（德阳）重型装备股份有限公司 | Hot segment of bent pipe of main pipeline of reactor and manufacture method thereof |
| CN102690939A (en) * | 2011-03-25 | 2012-09-26 | 上海凯科管业有限公司 | Production process of stainless steel seamless bend |
| CN103286252A (en) * | 2012-02-27 | 2013-09-11 | 辽阳石化机械设计制造有限公司 | Compacting die for reducing elbow and forming method of reducing elbow |
| CN103831328A (en) * | 2012-11-27 | 2014-06-04 | 倪国权 | Pipe bending machine |
| CN110260077A (en) * | 2019-06-15 | 2019-09-20 | 江阴市南方管件制造有限公司 | A kind of butt welding eccentric reducing elbow and its production technology used in industrial pipeline turning |
-
1990
- 1990-08-01 CN CN 90106692 patent/CN1050835A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307286C (en) * | 2001-06-13 | 2007-03-28 | Abb拉默斯环球有限公司 | Pyrolysis heater with paired burner zoned firing system |
| CN100384558C (en) * | 2004-12-31 | 2008-04-30 | 广东工业大学 | Thin-wall tube curvature-variable push-bending process and die |
| CN100357051C (en) * | 2005-10-11 | 2007-12-26 | 杭州电子科技大学 | Digit controlled constant force feeding ultrasonic plug extruder |
| CN100421873C (en) * | 2006-04-17 | 2008-10-01 | 江苏华阳金属管件有限公司 | Method for forming pipe fittings by cold extrusion |
| CN100564981C (en) * | 2008-03-27 | 2009-12-02 | 二重集团（德阳）重型装备股份有限公司 | Hot segment of bent pipe of main pipeline of reactor and manufacture method thereof |
| CN102690939A (en) * | 2011-03-25 | 2012-09-26 | 上海凯科管业有限公司 | Production process of stainless steel seamless bend |
| CN102690939B (en) * | 2011-03-25 | 2014-02-26 | 上海凯科管业有限公司 | Production process of stainless steel seamless bend |
| CN103286252A (en) * | 2012-02-27 | 2013-09-11 | 辽阳石化机械设计制造有限公司 | Compacting die for reducing elbow and forming method of reducing elbow |
| CN103831328A (en) * | 2012-11-27 | 2014-06-04 | 倪国权 | Pipe bending machine |
| CN103831328B (en) * | 2012-11-27 | 2016-06-08 | 倪国权 | A kind of bending machine |
| CN110260077A (en) * | 2019-06-15 | 2019-09-20 | 江阴市南方管件制造有限公司 | A kind of butt welding eccentric reducing elbow and its production technology used in industrial pipeline turning |
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