CN101514772A - Method for preparing special flange for wind nuclear power - Google Patents
Method for preparing special flange for wind nuclear power Download PDFInfo
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- CN101514772A CN101514772A CNA2008100206691A CN200810020669A CN101514772A CN 101514772 A CN101514772 A CN 101514772A CN A2008100206691 A CNA2008100206691 A CN A2008100206691A CN 200810020669 A CN200810020669 A CN 200810020669A CN 101514772 A CN101514772 A CN 101514772A
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Abstract
The invention relates to a method for preparing a special flange for wind nuclear power, which is characterized by mainly comprising the following processes: step one, baiting, namely, baiting round steel according to the required thickness to prepare a blank; step two, heating, namely, placing the blank into a coal-burning flame furnace, and heating the blank to between 600 and 650 DEG C for standby; step three, forging and striking, namely, performing the processes of roll-bonding, punching, chambering, flatting and molding on the heated blank to reach the size of a forged piece, and manufacturing a flange forged piece, wherein the initial forging temperature is between 1,100 and 1,150 DEGC, and the final forging temperature is more than or equal to 800 DEG C; step four, normalizing thermal treatment, namely, immediately and directly performing the normalizing thermal treating on the flange forged piece to prepare a flange blank; and step five, machining, namely, machining the flange blank to prepare a flange finished product. The flange prepared by the method can meet the requirement of the special flange for the wind nuclear power on strength, welding property and weather resisting property.
Description
Technical field
The present invention relates to a kind of flange, be specifically related to a kind of preparation method of special flange for wind nuclear power.Belong to the metal connecting piece technical field.
Background technique
Flange is a requisite link on the pipelines such as pressurized air, steam and chemical industry.Steel flanges particularly, owing to its intensity height, can weld, easily installation, energy is high pressure resistant, so more and more be widely used.Existing flange generally adopts A3 steel and 20# steel to make, steel plate cutting stock commonly used or round steel forge into blank then machining form, its intensity, weldability and weather resistance are also not ideal, therefore can not satisfy the needs of special flange for wind nuclear power to intensity, weldability and weatherability.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of preparation method that can satisfy special flange for wind nuclear power to the special flange for wind nuclear power of intensity, weldability and weatherability needs is provided.
The object of the present invention is achieved like this: a kind of preparation method of special flange for wind nuclear power is characterized in that described method main processes is as follows:
Step 1, blanking
Round steel is made blank by the desired thickness blanking;
Step 2, heating
Place coal-fired reverberating furnace to heat blank, be heated in 600～650 ℃ of scopes stand-by;
Step 3, forge
Blank after the heating is thick through pier, punching, reaming, the flat molding procedure of bat are made the flange forging, wherein initial forging temperature to reach forging ' s block dimension: 1100-1150 ℃, and final forging temperature: 〉=800 ℃;
Step 4, normalizing heat treatment
The flange forging is directly carried out normalizing heat treatment immediately, make flange blank.
For the special flange for wind nuclear power forging, its material, inherent quality require very high, and for preventing to occur white point (this type of material susceptibility of flake formation is very high) in the cooling procedure, this forging must be forged after-baking after forging immediately, for example directly expands the hydrogen isothermal annealing.
Step 5, machining
Flange blank is made the flange finished product through machining.
The flange of the inventive method preparation can satisfy special flange for wind nuclear power to intensity, weldability and weatherability needs.
Embodiment
The preparation method of the special flange for wind nuclear power that the present invention relates to, its main processes is as follows:
Step 1, blanking
Round steel is made blank by the desired thickness blanking;
Step 2, heating
Place coal-fired reverberating furnace to heat blank, be heated in 600～650 ℃ of scopes stand-by;
Step 3, forge
Blank after the heating forges with forging hammer, and, punching thick through pier, reaming, the flat molding procedure of bat are made the flange forging to reach forging ' s block dimension.Wherein initial forging temperature: 1100-1150 ℃, final forging temperature: 〉=800 ℃;
Step 4, directly forging back normalizing heat treatment
Step 5, machining
Flange blank is made the flange finished product through machining.
Claims (1)
1, a kind of preparation method of special flange for wind nuclear power is characterized in that described method main processes is as follows:
Step 1, blanking
Round steel is made blank by the desired thickness blanking;
Step 2, heating
Place coal-fired reverberating furnace to heat blank, be heated in 600～650 ℃ of scopes stand-by;
Step 3, forge
Blank after the heating is thick through pier, punching, reaming, the flat molding procedure of bat are made the flange forging, wherein initial forging temperature to reach forging ' s block dimension: 1100-1150 ℃, and final forging temperature: 〉=800 ℃;
Step 4, normalizing heat treatment
The flange forging is directly carried out normalizing heat treatment immediately, make flange blank.
Step 5, machining
Flange blank is made the flange finished product through machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100206691A CN101514772A (en) | 2008-02-20 | 2008-02-20 | Method for preparing special flange for wind nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100206691A CN101514772A (en) | 2008-02-20 | 2008-02-20 | Method for preparing special flange for wind nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101514772A true CN101514772A (en) | 2009-08-26 |
Family
ID=41039341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100206691A Pending CN101514772A (en) | 2008-02-20 | 2008-02-20 | Method for preparing special flange for wind nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101514772A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248103A (en) * | 2011-04-11 | 2011-11-23 | 徐州九鼎锻造科技有限公司 | Large wind power flange cake base pressing and double punching complex technology |
| CN102319863A (en) * | 2011-08-01 | 2012-01-18 | 贵州航天新力铸锻有限责任公司 | Method for forging soldering-free funnel-shaped flanges for petroChina (PTR) flush and drainage pipelines of nuclear power plant |
| CN102921852A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN104162765A (en) * | 2014-07-07 | 2014-11-26 | 江苏海纬集团有限公司 | Pipe fitting machining technology |
| CN105345409A (en) * | 2015-12-02 | 2016-02-24 | 湖南星马汽车有限公司 | Production technology for large welded type flange of mixing drum |
| CN116493886A (en) * | 2023-06-28 | 2023-07-28 | 山西新世纪锻造股份有限公司 | Processing technology of sealing flange |
-
2008
- 2008-02-20 CN CNA2008100206691A patent/CN101514772A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248103A (en) * | 2011-04-11 | 2011-11-23 | 徐州九鼎锻造科技有限公司 | Large wind power flange cake base pressing and double punching complex technology |
| CN102319863A (en) * | 2011-08-01 | 2012-01-18 | 贵州航天新力铸锻有限责任公司 | Method for forging soldering-free funnel-shaped flanges for petroChina (PTR) flush and drainage pipelines of nuclear power plant |
| CN102921852A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN102921852B (en) * | 2012-11-14 | 2014-11-26 | 西部钛业有限责任公司 | Preparation method of Ti31 titanium alloy flange forge piece |
| CN104162765A (en) * | 2014-07-07 | 2014-11-26 | 江苏海纬集团有限公司 | Pipe fitting machining technology |
| CN105345409A (en) * | 2015-12-02 | 2016-02-24 | 湖南星马汽车有限公司 | Production technology for large welded type flange of mixing drum |
| CN116493886A (en) * | 2023-06-28 | 2023-07-28 | 山西新世纪锻造股份有限公司 | Processing technology of sealing flange |
| CN116493886B (en) * | 2023-06-28 | 2023-09-08 | 山西新世纪锻造股份有限公司 | Processing technology of sealing flange |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090826 |