CN1817556A - Flange production - Google Patents
Flange production Download PDFInfo
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- CN1817556A CN1817556A CN 200610033997 CN200610033997A CN1817556A CN 1817556 A CN1817556 A CN 1817556A CN 200610033997 CN200610033997 CN 200610033997 CN 200610033997 A CN200610033997 A CN 200610033997A CN 1817556 A CN1817556 A CN 1817556A
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- flange
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Abstract
A technology for manufacturing flange includes such steps as preparing the flat steel bar with needed width and thickness, making cylindrical die, heating the flat steel bar to 700-900 deg.C, winding on said cylindrical die to become spiral cylinder, immediately and longitudinal cutting to obtain multiple flange blanks with open gap, flattening, welding, inspecting, annealing, die forging at 500-900 deg.C and machining.
Description
Technical field
The present invention relates to a kind of preparation method of flange.
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.At present domestic still based on original production method: 1, use round steel to forge moulding, its specification is single, cutting is time-consuming, efficient is low, cost is high; 2, steel plate patterning method, it uses the monoblock steel plate to cut into the flange shape, so lumber recovery is low, waste material is many, the production cost height; 3, casting will take steel smelting and become molten steel, use 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; 4, clod wash facture uses the steel band equate with flange ring width, thickness to carry out brake forming at normal temperatures, and whenever bending a circle generally speaking, to need the time be ten minutes, so production efficiency is low, the clod wash making makes situations such as product appearance fracture easily in addition.
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.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of preparation method of flange, its processing step is as follows:
(1) produce the band steel that band is made surplus according to the thickness and the width of flange finished product, the weight of band steel is 1.01～1.03 times of a plurality of flange finished weight summations.
(2) make cylindrical die according to the endoporus of making the flange finished product;
(3) band steel is heated to 700 ℃～900 ℃, sends into then in the bundle volume machine and roll into the spiral cylinder around the cylindrical die of step 2 and according to the quantity of making flange.
(4) the instant spiral cylinder that vertically cuts is made 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 with step 6 carries out die-forging forming under 500 ℃～900 ℃ temperature;
(8) flange blank body of step 7 is carried out machining and make finished product.
The invention has the beneficial effects as follows: use this process to carry out the processing of flange product, avoided flange in the cold drawn strong crack conditions that produces when curved, effective product quality, yield rate height that guarantees, and this process adopts streamline to make, shortened greatly product Production Time, reduced working strength of workers, production cost is low, thereby can be widely used in the production of flange product.
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 is made;
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, its processing step is as follows:
(1) produce the band steel that band is made surplus according to the thickness and the width of flange finished product, the weight of band steel is 1.01～1.03 times of a plurality of flange finished weight summations.Described making surplus is: thickness is than the big 3～8mm of thickness of flange finished product, width is the big 5～8mm of the width of flange, actual surplus is decided according to the size of flange finished product, and the less product of size can be reserved less making surplus, otherwise reserves bigger making surplus.
(2) make cylindrical die according to the endoporus of making the flange finished product; Described cylindrical die diameter 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 then to prick in the volume machine to roll into the spiral cylinder around the cylindrical die of step 2 and according to the quantity of making flange.Described heating-up temperature can respective change according to different materials, rolls the pressure rolling parameter of regulating roll in the process, makes steel billet to both sides and extend forward, and by the extruding location, guarantees the thickness and the width of product.
(4) use CUT vertically to cut the spiral cylinder immediately, 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, thereby thereby effectively guaranteed the not oxidized raising of flange blank body welding quality.
(6) weld to flange blank body carries out carrying out flaw detection and annealing in process;
(7) flange blank body with step 6 carries out die-forging forming under 500 ℃～900 ℃ temperature; Described temperature is controlled according to the size of product, can use lower temperature as undersized product, otherwise uses higher temperature.
(8) flange blank body of step 7 is carried out machining and make finished product.
As make a kind of flange specification and be: cylindrical 300mm, the flange of interior round 160mm, thickness 16mm, material are Q235.
1, steel billet heat is bundled into band steel, thickness is that 20mm, width are that 65mm, length are 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, the every circle thickness of spiral cylinder is 16mm, and width is 70mm.
4, vertically cut the spiral cylinder with CUT immediately, 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, the flange blank body with step 6 carries out die-forging forming under 820 ℃ temperature;
8, the flange blank body of step 7 is carried out machining and make finished product.
As make a kind of flange specification and be: cylindrical 100mm, the flange of interior round 50mm, thickness 8mm, material are stainless steel.
1, steel billet heat is bundled into band steel, thickness is that 12mm, width are that 45mm, length are 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, the every circle thickness of spiral cylinder is 8mm, and width is 50mm.
4, vertically cut the spiral cylinder with CUT immediately, 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, the flange blank body with step 6 carries out die-forging forming under 720 ℃ temperature;
8, the flange blank body of step 7 is carried out machining and make finished product.
As make a kind of flange specification and be: cylindrical 500mm, the flange of interior round 250mm, thickness 16mm, material are No. 45 steel.
1, steel billet heat is bundled into band steel, thickness is that 20mm, width are that 120mm, length are 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, the every circle thickness of spiral cylinder is 16mm, and width is 125mm.
4, vertically cut the spiral cylinder with CUT immediately, 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, the flange blank body with step 6 carries out die-forging forming under 900 ℃ temperature;
8, the flange blank body of step 7 is carried out machining and make finished product.
Use this process to carry out the processing of flange product, avoided flange in the cold drawn strong crack conditions that produces when curved, effective product quality, yield rate height that guarantees, and this process adopts streamline to make, shortened greatly product Production Time, reduced working strength of workers, production cost is low, thereby can be widely used in the production of flange product.
Claims (7)
1. the preparation method of a flange, it is characterized in that: processing step is as follows:
(1) produce the band steel that band is made surplus according to the thickness and the width of flange finished product, the weight of band steel is 1.01～1.03 times of a plurality of flange finished weight summations.
(2) make cylindrical die according to the endoporus of making the flange finished product;
(3) band steel is heated to 700 ℃～900 ℃, sends into then in the bundle volume machine and roll into the spiral cylinder around the cylindrical die of step 2 and according to the quantity of making flange.
(4) the instant spiral cylinder that vertically cuts is made 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 with step 6 carries out die-forging forming under 500 ℃～900 ℃ temperature;
(8) flange blank body of step 7 is carried out machining and make finished product.
2. the preparation method of a kind of flange according to claim 1, it is characterized in that: the described making surplus of step (1) is: thickness is than the big 3～8mm of thickness of flange finished product, and width is the big 5～8mm of the width of flange.
3. the preparation method of a kind of flange according to claim 1, it is characterized in that: the described cylindrical die diameter of step (2) is 1.01 times of flange finished product endoporus.
4. the preparation method of a kind of flange 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 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 according to claim 1 is characterized in that: step (4) guarantee the perpendicularity and the levelness of otch, and the otch size is 3mm when cutting.
7. the preparation method of a kind of flange according to claim 1 is characterized in that: the described otch employing of step (5) gas shield welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610033997 CN1817556A (en) | 2006-02-28 | 2006-02-28 | Flange production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610033997 CN1817556A (en) | 2006-02-28 | 2006-02-28 | Flange production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1817556A true CN1817556A (en) | 2006-08-16 |
Family
ID=36917858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610033997 Withdrawn CN1817556A (en) | 2006-02-28 | 2006-02-28 | Flange production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1817556A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010028548A1 (en) * | 2008-09-10 | 2010-03-18 | Lu Zhaoxiang | Flange manufacturing technique |
| CN102166704A (en) * | 2011-01-20 | 2011-08-31 | 中信重工机械股份有限公司 | Manufacturing method of grinder flange by bending, forming and splice welding n steel plate bar stock |
| CN104162765A (en) * | 2014-07-07 | 2014-11-26 | 江苏海纬集团有限公司 | Pipe fitting machining technology |
| CN111073190A (en) * | 2019-12-03 | 2020-04-28 | 东台市润丰法兰制造有限公司 | Plate type flat welding flange |
| CN114798843A (en) * | 2022-05-13 | 2022-07-29 | 通裕重工股份有限公司 | Process method for continuous hot rolling forming of flange and hot rolling equipment |
-
2006
- 2006-02-28 CN CN 200610033997 patent/CN1817556A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010028548A1 (en) * | 2008-09-10 | 2010-03-18 | Lu Zhaoxiang | Flange manufacturing technique |
| CN102166704A (en) * | 2011-01-20 | 2011-08-31 | 中信重工机械股份有限公司 | Manufacturing method of grinder flange by bending, forming and splice welding n steel plate bar stock |
| CN102166704B (en) * | 2011-01-20 | 2012-08-29 | 中信重工机械股份有限公司 | Manufacturing method of grinder flange by bending, forming and splice welding n steel plate bar stock |
| CN104162765A (en) * | 2014-07-07 | 2014-11-26 | 江苏海纬集团有限公司 | Pipe fitting machining technology |
| CN111073190A (en) * | 2019-12-03 | 2020-04-28 | 东台市润丰法兰制造有限公司 | Plate type flat welding flange |
| CN114798843A (en) * | 2022-05-13 | 2022-07-29 | 通裕重工股份有限公司 | Process method for continuous hot rolling forming of flange and hot rolling equipment |
| CN114798843B (en) * | 2022-05-13 | 2024-02-06 | 通裕重工股份有限公司 | Technological method for flange continuous hot-rolling forming and hot-rolling equipment |
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