CN104250711A - Casting method for flange alloy material - Google Patents
Casting method for flange alloy material Download PDFInfo
- Publication number
- CN104250711A CN104250711A CN201410448167.4A CN201410448167A CN104250711A CN 104250711 A CN104250711 A CN 104250711A CN 201410448167 A CN201410448167 A CN 201410448167A CN 104250711 A CN104250711 A CN 104250711A
- Authority
- CN
- China
- Prior art keywords
- forging
- flange
- alloy billet
- alloy
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Forging (AREA)
Abstract
The invention discloses a casting method for a flange alloy material. A selected alloy blank material comprises the chemical compositions in percent by weight: 12.7-12.9% of nickel, 25.3-25.5% of chromium, 0.1-0.12% of carbon, 0.17-0.19% of silicon, 0.72-0.79% of manganese, 0.0015-0.0035% of sulfur, 2.25-2.35% of molybdenum, 3.25-3.45% of titanium, 3-3.25% of aluminium, 1.25-1.85% of copper, 0.015-0.017% of phosphorus, 0.9-1.1% of tungsten, 0.018-0.022% of boron, 0.9-1.1% of niobium, 0.11-0.13% of rare earth elements, and the balance Fe and impurities, wherein the rare earth elements comprise ytterbium. By performing chemical analysis on the raw materials, controlling the forging temperature and the forging ratio, performing solid solution treatment after forging, performing heat treatment and performing subsequent structure hardening processing, and a forged forging is usable under the working conditions of relatively high content of sulfur and phosphorus compositions, and has good mechanical properties. The alloy material has excellent stress corrosion cracking resistance, pitting corrosion resistance and crevice corrosion resistance, also has good resistance to oxidizing and non-oxidizing hot acids, and is capable of possessing stable mechanical properties in the environment at normal temperature to a high temperature of 550 DEG C.
Description
Technical field
The invention belongs to material processing field, relate to a kind of forging processing of alloy material, specifically a kind of castmethod of flange alloy material.
Background technology
In the continuous seepage of modern industry, especially in petroleum chemical industry, under the influence of high pressure and temperature, flange by dielectric corrosion, wash away, temperature, pressure, the factor such as vibrations impact, inevitably can there is leakage problem.Due to the error of trim finish size, sealing element aging and install the seepage that the fastening reason such as improper very easily causes flange.If can not administer flange leakage problems in time, under the washing away of medium, meeting makes seepage expand rapidly, causes the loss of material, the destruction of production environment, causes enterprise to shut down and stops production, cause huge financial loss.If poisonous and harmful, inflammable and explosive dielectric leakage, also likely cause the Serious Accidents such as personnel are poisoning, fire explosion.
Tradition solves the method for flange seepage for changing sealing element and smearing seal gum or change flange and pipeline, but the method has significant limitation, and some seepages limit by the requirement of work circumstances safe, cannot solve at scene.So seek corrosion resistant material to become difficult point in Practical Project technology and emphasis.
Summary of the invention
Technical problem to be solved by this invention is, for overcoming the shortcoming of prior art, a kind of alloy material flange and forging process thereof are provided, this alloy material flange has excellent anticorrosion stress-resistant cracking performance, resistance to pitting attack, crevice corrosion behavior, there is good oxidation-resistance and non-oxidizable hot acid performance simultaneously, stable mechanical property can be ensured under the high temperature of room temperature to 550 DEG C.
In order to solve above technical problem, the invention provides a kind of castmethod of flange alloy material, comprise following concrete steps: step (1): the alloy billet selecting below 5000Kg, alloy billet weight percent chemical composition is: nickel 12.7-12.9%, chromium 25.3-25.5%, carbon 0.1-0.12%, silicon 0.17-0.19%, manganese 0.72-0.79%, sulphur 0.0015-0.0035%, molybdenum 2.25-2.35%, titanium 3.25-3.45%, aluminium 3-3.25%, copper 1.25-1.85%, phosphorus 0.015-0.017%, tungsten 0.9-1.1%, boron 0.018-0.022%, niobium 0.9-1.1%, rare earth element 0.11-0.13%, all the other are Fe and impurity, described rare earth element comprises ytterbium, erbium, dysprosium, gadolinium or cerium,
Step (2): adopt Electric furnace steel making, at 3500 DEG C, melting is carried out to blank;
Step (3): the alloy billet through high melt in step (2) is entered stove insulation at 940-980 DEG C, forge after insulation 3-6h, scale removal, and premolding;
Step (4): premolding alloy billet step (3) obtained carries out at 920-950 DEG C that forging terminal is shaping, and final forging temperature controls more than 900 DEG C, when lower than this temperature, must increase fire, controlled forge process is than >=3;
Step (5): by the alloy billet trimming after shaping for terminal in step (4), and 3-6h under the alloy billet after trimming being remained on 1150-1180 DEG C of temperature;
Step (6): the alloy billet obtained in step (5) is heat-treated, treatment process is solution treatment, equipment for Heating Processing adopts bell furnace, heat-treatment temperature range is 980-1200 DEG C, soaking time is 25-35min, then alloy billet is cooled to 38-42 DEG C in 5 minutes, obtains flange blank;
Step (7): the flange blank after above-mentioned thermal treatment is carried out structure hardening process, the method of process is: at 700-750 DEG C, be incubated 8h, then when furnace cooling is to about 600-650 DEG C, then be incubated 10 hours in this temperature range, be cooled to room temperature in atmosphere subsequently;
Step (8): by the above-mentioned forging quality of flange blank by its inside of ultrasound examination being cooled to room temperature, and sampling is analyzed the mechanical property of forging, after above monitoring analysis is all qualified, collects for subsequent use by flange blank.
Further, the castmethod of aforementioned a kind of flange alloy material, the alloy billet after terminal is shaping in step (5) carries out trimming, and resection is 25% of steel ingot gross weight; In step (6), alloy billet was cooled to 38-42 DEG C in 5 minutes, the method for cooling of employing alloy billet is put into fast the pond filling and circulate current.
The invention has the beneficial effects as follows:
Of the present invention for the manufacture of in the alloy material of flange containing chromium 25.3-25.5%, wherein chromium plays anti-oxidant and anticorrosive effect, under 650 ~ 1000 DEG C of high temperature, have higher intensity and anti-oxidant, resistance to combustion gas corrosion ability, even can at 1000 ~ 1100 DEG C of temperature life-time service; Wherein cupric 1.25-1.85%, molybdenum 2.25-2.35%, can improve the ability of resistance to various acid corrosion and stress corrosion; Wherein containing aluminium 3-3.25%, make alloy have higher resistivity, lower temperature coefficient of resistivity and good solidity to corrosion, improve the oxidation-resistance of alloy material, high temperature strength.
Add the rare earth element of 0.11-0.13% in alloy material, can play refining, desulfurization, in and the effect of low melting point detrimental impurity, and the processing characteristics of alloy can be improved, especially in nickelalloy, the physical and chemical performance of alloy can be improved to a great extent, and improve Alloy At Room Temperature and high-temperature mechanical property.
The present invention adopts the mode of flat-die forging, eliminates the defect such as shrinkage cavity and porosity, pore, makes blank have higher mechanical property.
By carrying out the solution treatment after the control of chemical analysis, the temperature of forging and forging ratio, forging, thermal treatment and structure hardening process afterwards to starting material, make the forging forged can adapt to use under sulfur-bearing and the higher working condition of phosphorus containing components, and there is good mechanical property, following mechanical property can be reached simultaneously:
1. flange room temperature tensile strength >=1275MPa;
2. flange high temp (250 DEG C) tensile strength >=945MPa;
3. flange Brinell hardness HB >=330.
Embodiment
Embodiment 1
The present embodiment provides a kind of castmethod of flange alloy material,
Step (1): the alloy billet selecting 5000Kg, the weight percent chemical composition of alloy billet is: nickel 12.7%, chromium 25.3%, carbon 0.1%, silicon 0.17%, manganese 0.72%, sulphur 0.0015%, molybdenum 2.25%, titanium 3.25%, aluminium 3%, copper 1.25%, phosphorus 0.015%, tungsten 0.9%, boron 0.018%, niobium 0.9%, rare earth element 0.11%, and all the other are Fe and impurity; Described rare earth element comprises ytterbium.Guarantee that its Chemical Composition meets the composition requirement of above-mentioned alloy material;
Step (2): adopt Electric furnace steel making, at 3500 DEG C, melting is carried out to blank;
Step (3): the alloy billet through high melt in step (2) is entered stove insulation at 940 DEG C, forge after insulation 6h, scale removal, and premolding;
Step (4): premolding alloy billet step (3) obtained carries out at 920 DEG C that forging terminal is shaping, and final forging temperature controls more than 900 DEG C, when lower than this temperature, must increase fire, controlled forge process ratio is 3;
Step (5): by the alloy billet trimming after shaping for terminal in step (4), and 6h under the alloy billet after trimming being remained on 1150 DEG C of temperature;
Step (6): the alloy billet obtained in step (5) is heat-treated, treatment process is solution treatment, equipment for Heating Processing adopts bell furnace, heat-treatment temperature range is 980 DEG C, soaking time is 35min, then alloy billet is cooled to 38 DEG C in 5 minutes, obtains flange blank;
Step (7): the flange blank after above-mentioned thermal treatment is carried out structure hardening process, the method of process is: at 700 DEG C, be incubated 8h, then when furnace cooling is to about 600 DEG C, then be incubated 10 hours in this temperature range, be cooled to room temperature in atmosphere subsequently;
Step (8): by the above-mentioned forging quality of flange blank by its inside of ultrasound examination being cooled to room temperature, and sampling is analyzed the mechanical property of forging, after above monitoring analysis is all qualified, collects for subsequent use by flange blank.
Wherein, the alloy billet after terminal is shaping in step (5) carries out trimming, and resection is 25% of steel ingot gross weight; In step (6), alloy billet was cooled to 38 DEG C in 5 minutes, the method for cooling of employing alloy billet is put into fast the pond filling and circulate current.
Embodiment 2
The present embodiment provides a kind of castmethod of flange alloy material, step (1): the alloy billet selecting below 4800Kg, the weight percent chemical composition of selection alloy billet is: nickel 12.9%, chromium 25.5%, carbon 0.12%, silicon 0.19%, manganese 0.79%, sulphur 0.0035%, molybdenum 2.35%, titanium 3.45%, aluminium 3.25%, copper 1.85%, phosphorus 0.017%, tungsten 1.1%, boron 0.022%, niobium 1.1%, rare earth element 0.13%, and all the other are Fe and impurity; Described rare earth element comprises erbium; Step (2): step (1) analyze qualified after, adopt Electric furnace steel making, at 3500 DEG C, melting is carried out to blank;
Step (3): the alloy billet through high melt in step (2) is entered stove insulation at 980 DEG C, forge after insulation 3h, scale removal, and premolding;
Step (4): premolding alloy billet step (3) obtained carries out at 950 DEG C that forging terminal is shaping, and final forging temperature controls more than 900 DEG C, when lower than this temperature, must increase fire, controlled forge process ratio is 3.2;
Step (5): by the alloy billet trimming after shaping for terminal in step (4), and 3h under the alloy billet after trimming being remained on 1180 DEG C of temperature;
Step (6): the alloy billet obtained in step (5) is heat-treated, treatment process is solution treatment, equipment for Heating Processing adopts bell furnace, heat-treatment temperature range is 1200 DEG C, soaking time is 25min, then alloy billet is cooled to 42 DEG C in 5 minutes, obtains flange blank;
Step (7): the flange blank after above-mentioned thermal treatment is carried out structure hardening process, the method of process is: at 750 DEG C, be incubated 8h, then when furnace cooling is to about 650 DEG C, then be incubated 10 hours in this temperature range, be cooled to room temperature in atmosphere subsequently;
Step (8): by the above-mentioned forging quality of flange blank by its inside of ultrasound examination being cooled to room temperature, and sampling is analyzed the mechanical property of forging, after above monitoring analysis is all qualified, collects for subsequent use by flange blank.
Wherein, the alloy billet after terminal is shaping in step (5) carries out trimming, and resection is 25% of steel ingot gross weight; In step (6), alloy billet was cooled to 42 DEG C in 5 minutes, the method for cooling of employing alloy billet is put into fast the pond filling and circulate current.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (3)
1. a castmethod for flange alloy material, is characterized in that, comprises following concrete steps:
Step (1): the alloy billet selecting below 5000Kg, its weight percent chemical composition of described flange alloy material is: nickel 12.7-12.9%, chromium 25.3-25.5%, carbon 0.1-0.12%, silicon 0.17-0.19%, manganese 0.72-0.79%, sulphur 0.0015-0.0035%, molybdenum 2.25-2.35%, titanium 3.25-3.45%, aluminium 3-3.25%, copper 1.25-1.85%, phosphorus 0.015-0.017%, tungsten 0.9-1.1%, boron 0.018-0.022%, niobium 0.9-1.1%, rare earth element 0.11-0.13%, and all the other are Fe and impurity; Described rare earth element comprises ytterbium, erbium, dysprosium, gadolinium or cerium;
Step (2): adopt Electric furnace steel making, at 3500 DEG C, melting is carried out to blank;
Step (3): the alloy billet through high melt in step (2) is entered stove insulation at 940-980 DEG C, forge after insulation 3-6h, scale removal, and premolding;
Step (4): premolding alloy billet step (3) obtained carries out at 920-950 DEG C that forging terminal is shaping, and final forging temperature controls more than 900 DEG C, when lower than this temperature, must increase fire, controlled forge process is than >=3;
Step (5): by the alloy billet trimming after shaping for terminal in step (4), and 3-6h under the alloy billet after trimming being remained on 1150-1180 DEG C of temperature;
Step (6): the alloy billet obtained in step (5) is heat-treated, treatment process is solution treatment, equipment for Heating Processing adopts bell furnace, heat-treatment temperature range is 980-1200 DEG C, soaking time is 25-35min, then alloy billet is cooled to 38-42 DEG C in 5 minutes, obtains flange blank;
Step (7): the flange blank after above-mentioned thermal treatment is carried out structure hardening process, the method of process is: at 700-750 DEG C, be incubated 8h, then when furnace cooling is to about 600-650 DEG C, then be incubated 10 hours in this temperature range, be cooled to room temperature in atmosphere subsequently;
Step (8): by the above-mentioned forging quality of flange blank by its inside of ultrasound examination being cooled to room temperature, and sampling is analyzed the mechanical property of forging, after above monitoring analysis is all qualified, collects for subsequent use by flange blank.
2. the forging process of alloy material flange according to claim 1, is characterized in that, the alloy billet after terminal is shaping in described step (5) carries out trimming, and resection is 25% of steel ingot gross weight.
3. the forging process of alloy material flange according to claim 1, it is characterized in that, in described step (6), alloy billet was cooled to 38-42 DEG C in 5 minutes, the method for cooling of employing alloy billet is put into fast the pond filling and circulate current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448167.4A CN104250711A (en) | 2014-09-04 | 2014-09-04 | Casting method for flange alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448167.4A CN104250711A (en) | 2014-09-04 | 2014-09-04 | Casting method for flange alloy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104250711A true CN104250711A (en) | 2014-12-31 |
Family
ID=52185957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410448167.4A Pending CN104250711A (en) | 2014-09-04 | 2014-09-04 | Casting method for flange alloy material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104250711A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111913A (en) * | 2016-06-30 | 2016-11-16 | 娄土岭 | A kind of flange casting technique |
| CN107084288A (en) * | 2017-04-27 | 2017-08-22 | 无锡市华尔泰机械制造有限公司 | A kind of 316L stainless steel materials flange and its forging technology |
| CN107186443A (en) * | 2017-06-16 | 2017-09-22 | 航天精工股份有限公司 | A kind of processing method of helicopter control system ring flange |
| CN110936115A (en) * | 2019-12-29 | 2020-03-31 | 江苏金源高端装备股份有限公司 | Forging process of hydraulic cylinder flange |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045960A (en) * | 2012-12-21 | 2013-04-17 | 无锡市华尔泰机械制造有限公司 | Flange for wind power drum and manufacturing technique thereof |
| CN104004971A (en) * | 2014-05-09 | 2014-08-27 | 无锡市华尔泰机械制造有限公司 | Alloy material flange and forging technology thereof |
-
2014
- 2014-09-04 CN CN201410448167.4A patent/CN104250711A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045960A (en) * | 2012-12-21 | 2013-04-17 | 无锡市华尔泰机械制造有限公司 | Flange for wind power drum and manufacturing technique thereof |
| CN104004971A (en) * | 2014-05-09 | 2014-08-27 | 无锡市华尔泰机械制造有限公司 | Alloy material flange and forging technology thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111913A (en) * | 2016-06-30 | 2016-11-16 | 娄土岭 | A kind of flange casting technique |
| CN107084288A (en) * | 2017-04-27 | 2017-08-22 | 无锡市华尔泰机械制造有限公司 | A kind of 316L stainless steel materials flange and its forging technology |
| CN107186443A (en) * | 2017-06-16 | 2017-09-22 | 航天精工股份有限公司 | A kind of processing method of helicopter control system ring flange |
| CN107186443B (en) * | 2017-06-16 | 2019-02-19 | 航天精工股份有限公司 | A kind of processing method of helicopter control system ring flange |
| CN110936115A (en) * | 2019-12-29 | 2020-03-31 | 江苏金源高端装备股份有限公司 | Forging process of hydraulic cylinder flange |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104004971B (en) | A kind of alloy material flange and forging process thereof | |
| CN109261869B (en) | Forging and heat treatment process of conversion flange forging | |
| CN103305672B (en) | Heat treatment process for ultra-large type tube plate forge piece of pressure container | |
| CN102260818B (en) | Manufacturing method of high-silicon anticorrosion cast iron | |
| CN104250711A (en) | Casting method for flange alloy material | |
| CN106636742B (en) | A kind of ZSA-3 titanium alloy tubes, preparation method and applications | |
| CN109439979A (en) | 6063T6 improved aluminum alloy and its processing method | |
| CN108359863B (en) | GIS pipe shell production process | |
| CN103898359A (en) | Titanium alloy and processing method thereof | |
| CN105506318B (en) | A kind of production technology of extra super duralumin alloy | |
| CN104762559A (en) | Method for producing steel plate for hydrogen-contacting equipment | |
| CN104878248A (en) | High temperature alloy 625H and technological making method thereof | |
| US20180171456A1 (en) | Nickel-based alloy, method and use | |
| CN102994907A (en) | Casting method of check valve body | |
| WO2022218444A1 (en) | Method for smelting high-temperature alloy with ultrahigh n content in vim furnace | |
| CN103469135A (en) | Preparation method of high-niobium TiAl intermetallic compound | |
| CN103060695A (en) | Production method of alloy seamless steel tubes for petroleum refining | |
| CN102994906B (en) | A kind of method of ball valve body | |
| CN108467984B (en) | Five-membered high-entropy alloy Cu 0.5 FeNiVAl x and strength and hardness improving method thereof | |
| CN108411162B (en) | High-temperature-resistant alloy material with high mechanical property and low impurity content | |
| CN110079753A (en) | A kind of forging method for eliminating TiAl alloy remnants lamella | |
| CN105543748A (en) | Heat treatment method for Nimonic101 nickel-based alloy | |
| CN104611612A (en) | Pretreatment process capable of prolonging creep rupture life of hot continuous rolled Ti6Al4V alloy | |
| CN104152809A (en) | Alloy mandrel and preparation method thereof | |
| CN101956097B (en) | Machining method of CuAlMn low-temperature memory alloy plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141231 |