CN1824457A - Manufacturing method of flange blank body - Google Patents
Manufacturing method of flange blank body Download PDFInfo
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- CN1824457A CN1824457A CN 200610034189 CN200610034189A CN1824457A CN 1824457 A CN1824457 A CN 1824457A CN 200610034189 CN200610034189 CN 200610034189 CN 200610034189 A CN200610034189 A CN 200610034189A CN 1824457 A CN1824457 A CN 1824457A
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- blank body
- flange blank
- band steel
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Abstract
The present invention discloses a production method of flange blank body. Said method includes the following several steps: according to the number of flange blank bodies to be produced by means of one-step operation and thickness and width of flange finished product making flat steel with allowance for finish; according to the inner hole diameter of flange finished product making cylindrical mould; heating flat steel and feeding the flat steel into coiling machine, and coiling the flat steel around the cylindrical mould to obtain spiral column body, longitudinally cutting the spiral column body to obtain several flange blank bodies with notch; flattening flange blank bodies and welding notches; making defect detection and annealing treatment, then making impact forging and forming.
Description
Technical field
The present invention relates to a kind of preparation method of flange blank body.
Background technology
Along with the China's national economy high speed development, each large, medium and small enterprise spreads all over the country like the mushrooms after rain, flange becomes specialization by original scattered production and produces as the vitals that the mechanical part interface connects and pipe joint connects, and consumption has some idea of.Following method is adopted in the making of present domestic flange blank body usually: 1, use round steel to forge moulding, the problem that this mode exists is: manufacturing specification is single, cutting is time-consuming, efficient is low, cost is high; 2, steel plate patterning method, this method is owing to use the monoblock steel plate to cut into the flange shape, so lumber recovery is low, waste material is many, the production cost height adopts the form that is welded into annulus behind the circular arc sheet again even the monoblock steel plate cut into, and the steel plate utilization rate also can not get very big raising, and also have the weld seam at two places or three places on the product, thereby increased working strength of workers; 3, casting becomes molten steel with scrap smelting, uses spun casting to become the flange shape, and this method production efficiency is low, and factory is seriously polluted to environment, and product quality is difficult to guarantee, so production cost is higher relatively.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of preparation method that can carry out in enormous quantities, high efficiency, low-cost production flange blank body.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of preparation method of flange blank body, its processing step is as follows:
(1) band steel moulding: according to quantity and the thickness of flange finished product and the band steel that width is produced band allowance of the flange blank body of disposable making, the weight of described band steel is 1.01～1.03 times of the flange finished weight summation of a plurality of same sizes of needing to make.
(2) make cylindrical die according to the diameter of bore of flange finished product.
(3) band steel is heated to 700 ℃～900 ℃, sends into the cylindrical die that centers on step 2 in the bundle volume machine then and roll into the spiral cylinder, the number of turns of described spiral cylinder and the flange blank body quantity Matching that needs making.
(4) vertically cut the spiral cylinder, obtain a plurality of flange blank bodies with otch;
(5) the otch welding will be carried out after the flange blank body pressing;
(6) weld to flange blank body carries out carrying out flaw detection and annealing in process;
(7) flange blank body is carried out die-forging forming under 500 ℃～900 ℃ temperature;
The invention has the beneficial effects as follows: this manufacture craft is reserved the weight of band steel at first in advance according to the quantity of the flange blank body of disposable making, thereby has effectively controlled the processing waste material of subsequent handling, has improved the utilization rate of band steel greatly; Band steel is carried out the processing mode that hot bending becomes the spiral cylinder, help the quick shaping of band steel in the process of rolling, and effectively guaranteed product quality; And, the flange blank body that adopts this technology to make has only a weld seam, and after weld seam is through carrying out flaw detection and annealing in process, reduce the residual stress of weld zone, improve the mechanical strength of product, help improving the finished product rate of subsequent handling, use die-forging forming effectively to guarantee the dimensional requirement of flange blank body at last; In addition, this process adopts streamline manufacture craft, shortened greatly again product Production Time, reduced working strength of workers, reduced production cost, thereby can be widely used in the production of flange blank body.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the band steel structural representation that step 1 of the present invention is made;
Fig. 2 is the borded pile body structure schematic diagram that step 3 of the present invention is made;
Fig. 3 is the spiral cylinder cut direction schematic diagram of step 4 of the present invention;
Fig. 4 is the flange blank body structural representation that step 4 of the present invention obtains;
Fig. 5 is the flange blank body structural representation after step 5 welding of the present invention.
The specific embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of preparation method of flange blank body, its processing step is as follows:
(1) band steel moulding: according to quantity and the thickness of flange finished product and the band steel that width is produced band allowance of the flange blank body of disposable making, the method of its making can adopt modes such as hot bundle, forging and pressing, steel plate cutting, and the weight of described band steel is 1.01～1.03 times of the flange finished weight summation of a plurality of same sizes of need making.The allowance of described band steel is: thickness is than the big 3～8mm of thickness of flange finished product, width is than the little 5～8mm of width of flange finished product, actual allowance is decided according to the size of flange finished product, the less product of size can be reserved less allowance, otherwise needs to reserve bigger allowance; In addition, this technology is reserved the weight of band steel at first in advance according to the quantity of the flange blank body of disposable making, thereby has effectively controlled the processing waste material of subsequent handling, has improved the utilization rate of band steel greatly.
(2) make cylindrical die: the diameter of described cylindrical die is 1.01 times of flange finished product endoporus.
(3) band steel evenly is heated to 700 ℃～900 ℃, the best is 820 ℃～850 ℃, sends into the cylindrical die that centers on step 2 in the bundle volume machine then and rolls into the spiral cylinder, the number of turns of described spiral cylinder and the flange blank body quantity Matching that needs making.Described heating-up temperature can be made corresponding variation according to different rapidoprints, rolls the pressure rolling parameter that also needs to regulate roll in the process, makes steel billet to both sides and extension forward, and by the extruding location, guarantees the thickness and the width of product; In addition, band steel is carried out the processing mode that hot bending becomes the spiral cylinder, help the quick shaping of band steel in the process of rolling, and effectively guaranteed product quality.
(4) use CUT vertically to cut the spiral cylinder, obtain a plurality of flange blank bodies that have only an otch; When cutting, need to guarantee the perpendicularity and the levelness of otch, and because the size of incision size can directly have influence on the welding quality of flange blank body, so this technology is controlled at the otch size about 3mm.
(5) the otch welding is carried out in using gases protection weldering after the flange blank body pressing, thereby thereby effectively guaranteed flange blank body not oxidized welding quality that improves otch in the process of welding.
(6) weld to flange blank body carries out carrying out flaw detection and annealing in process; Carrying out flaw detection helps finding the weld defect of product, and carries out annealing in process, can reduce the residual stress of weld zone, improves the mechanical strength of product, helps improving the finished product rate of subsequent handling.
(7) flange blank body is carried out die-forging forming under 500 ℃～900 ℃ temperature; Described temperature need be controlled according to the size of product, can use lower processing temperature as undersized product, otherwise uses higher processing temperature; This step has effectively guaranteed the dimensional requirement of flange blank body.
As 15 specifications of the disposable production of needs be: cylindrical 300mm, interior round 160mm, thickness 16mm, material are the flange blank body of Q235.
1, steel billet heat is bundled into band steel, the specification of band steel: thickness is that 20mm, width are 65mm, and conversing the due length of band steel according to 15 flange finished weight summations again is 14m.
2, make cylindrical die, the mould external diameter is 161.5mm.
3, band steel is heated to 800 ℃, sends into then and prick the spiral cylinders that center on the cylindrical die of step 2 in the volume machine and roll into 15 circles, guarantee that the every circle thickness of spiral cylinder is 16mm, width is 70mm.
4, vertically cut the spiral cylinder with CUT, obtain a plurality of flange blank bodies with otch; When cutting, guarantee the perpendicularity and the levelness of otch, and the otch size is 3mm.
5, flange blank body is flattened back using gases protection weldering and carry out the otch welding;
6, the weld to flange blank body carries out carrying out flaw detection and annealing in process;
7, flange blank body is carried out die-forging forming under 820 ℃ temperature;
As 15 specifications of the disposable production of needs be: cylindrical 100mm, interior round 50mm, thickness 8mm, material are stainless flange blank body.
1, steel billet is forged into band steel, the specification of band steel: thickness is that 12mm, width are 21mm, and conversing the due length of band steel according to 15 flange finished weight summations again is 4m.
2, make cylindrical die, the mould external diameter is 50.5mm.
3, band steel is heated to 700 ℃, sends into then and prick the spiral cylinders that center on the cylindrical die of step 2 in the volume machine and roll into 15 circles, guarantee that the every circle thickness of spiral cylinder is 8mm, width is 25mm.
4, use CUT vertically to cut the spiral cylinder, make a plurality of flange blank bodies with otch; When cutting, guarantee the perpendicularity and the levelness of otch, and the otch size is 3mm.
5, flange blank body is flattened back using gases protection weldering and carry out the otch welding;
6, the weld to flange blank body carries out carrying out flaw detection and annealing in process;
7, flange blank body is carried out die-forging forming under 720 ℃ temperature;
As 15 specifications of the disposable production of needs be: cylindrical 500mm, interior round 250mm, thickness 16mm, material are the flange blank body of No. 45 steel.
1, steel plate is cut into band steel, the specification of band steel: thickness is that 20mm, width are 120mm, and conversing the due length of band steel according to 15 flange finished weight summations again is 25m.
2, make cylindrical die, the mould external diameter is 252.5mm.
3, band steel is heated to 900 ℃, sends into then and prick the spiral cylinders that center on the cylindrical die of step 2 in the volume machine and roll into 15 circles, guarantee that the every circle thickness of spiral cylinder is 16mm, width is 125mm.
4, vertically cut the spiral cylinder with CUT, obtain a plurality of flange blank bodies with otch; When cutting, guarantee the perpendicularity and the levelness of otch, and the otch size is 3mm.
5, flange blank body is flattened back using gases protection weldering and carry out the otch welding;
6, the weld to flange blank body carries out carrying out flaw detection and annealing in process;
7, flange blank body is carried out die-forging forming under 900 ℃ temperature;
This manufacture craft adopts streamline to make, shortened greatly product Production Time, reduced working strength of workers, reduced production cost, thereby can be widely used in the production of flange blank body.
Claims (7)
1. the preparation method of a flange blank body, it is characterized in that: processing step is as follows:
(1) band steel moulding: according to quantity and the thickness of flange finished product and the band steel that width is produced band allowance of the flange blank body of disposable making, the weight of described band steel is 1.01～1.03 times of the flange finished weight summation of a plurality of same sizes of needing to make.
(2) make cylindrical die according to the diameter of bore of flange finished product.
(3) band steel is heated to 700 ℃～900 ℃, sends into the cylindrical die that centers on step 2 in the bundle volume machine then and roll into the spiral cylinder, the number of turns of described spiral cylinder and the flange blank body quantity Matching that needs making.
(4) vertically cut the spiral cylinder, obtain a plurality of flange blank bodies with otch;
(5) the otch welding will be carried out after the flange blank body pressing;
(6) weld to flange blank body carries out carrying out flaw detection and annealing in process;
(7) flange blank body is carried out die-forging forming under 500 ℃～900 ℃ temperature.
2. the preparation method of a kind of flange blank body according to claim 1, it is characterized in that: the allowance of the described band steel of step (1) is: thickness is than the big 3～8mm of thickness of flange finished product, and width is than the little 5～8mm of width of flange finished product.
3. the preparation method of a kind of flange blank body according to claim 1, it is characterized in that: the diameter of the described cylindrical die of step (2) is 1.01 times of flange finished product diameter of bore.
4. the preparation method of a kind of flange blank body according to claim 1, it is characterized in that: the described heating-up temperature of step (3) is 820 ℃～850 ℃.
5. the preparation method of a kind of flange blank body according to claim 1 is characterized in that: step (4) uses CUT that the spiral cylinder is cut.
6. the preparation method of a kind of flange blank body according to claim 1 is characterized in that: about the big or small 3mm of being of the described otch of step (4).
7. the preparation method of a kind of flange blank body according to claim 1, it is characterized in that: the described welding manner of step (5) is a gas shielded arc welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100341891A CN100389006C (en) | 2006-03-06 | 2006-03-06 | Manufacturing method of flange blank body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100341891A CN100389006C (en) | 2006-03-06 | 2006-03-06 | Manufacturing method of flange blank body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1824457A true CN1824457A (en) | 2006-08-30 |
| CN100389006C CN100389006C (en) | 2008-05-21 |
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ID=36935380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100341891A Expired - Fee Related CN100389006C (en) | 2006-03-06 | 2006-03-06 | Manufacturing method of flange blank body |
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| Country | Link |
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| CN (1) | CN100389006C (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112727A (en) * | 1977-04-01 | 1978-09-12 | Brown Marshall B | Method and apparatus for making pipe flanges |
| CN2092381U (en) * | 1991-04-23 | 1992-01-08 | 大庆石油管理局总机械修理厂法兰分厂 | Machines for downword welding the flanges |
| CN2144541Y (en) * | 1993-01-13 | 1993-10-27 | 周群 | Flange bending device |
| JPH06277851A (en) * | 1993-03-29 | 1994-10-04 | Sato Tekko Kk | Manufacture of flange for joint |
| CN1193841C (en) * | 2001-06-19 | 2005-03-23 | 郑渭梁 | Rolling jetting and pressing (molding) method |
| CN1208147C (en) * | 2002-11-02 | 2005-06-29 | 朱晓东 | Flange cold rolling machine |
| CN1436620A (en) * | 2003-03-21 | 2003-08-20 | 常熟市龙腾汽车弹簧钢板厂 | Production process of steel flange blank |
| CN1730185A (en) * | 2005-08-12 | 2006-02-08 | 河南科隆石化装备有限公司 | Steel plate hot-rolling welded flange technique |
-
2006
- 2006-03-06 CN CNB2006100341891A patent/CN100389006C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN100389006C (en) | 2008-05-21 |
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Granted publication date: 20080521 Termination date: 20110306 |