CN1257765A - Technology for manufacturing seamless alloy pierced billet - Google Patents
Technology for manufacturing seamless alloy pierced billet Download PDFInfo
- Publication number
- CN1257765A CN1257765A CN 98121098 CN98121098A CN1257765A CN 1257765 A CN1257765 A CN 1257765A CN 98121098 CN98121098 CN 98121098 CN 98121098 A CN98121098 A CN 98121098A CN 1257765 A CN1257765 A CN 1257765A
- Authority
- CN
- China
- Prior art keywords
- alloy
- pierced billet
- rotating excitation
- excitation field
- centrifugal
- 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.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 30
- 239000000956 alloy Substances 0.000 title claims abstract description 30
- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000009750 centrifugal casting Methods 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims description 23
- 238000005242 forging Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 abstract description 10
- 238000009826 distribution Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 230000005672 electromagnetic field Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000005669 field effect Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Landscapes
- Centrifugal Separators (AREA)
Abstract
The technology for manufacturing seamless alloy pierced billet features that said seamless alloy pierced billet is made by centrifugal casting in a rotary magnetic field in the conditions that the centrifugal rotation speed of molten alloy is 600-2500 rpm, the angle speed of rotary magnetic field is 500-2500 rpm and the magnetic field intensity is 0.01-0.2T. Its advantages are ability to control the distribution of impurities and different active components in the pierced billet and simple operation.
Description
The present invention relates to the technology of preparing of metal pipe material, provide a kind of centrifugal casting to prepare the new technology of seamless alloy pierced billet especially.
Along with development and national economy, the environment for use of steel pipe goes from bad to worse, and is more and more higher to the quality requirement of seamless alloy pipe.The tubing that has is not only corrosion-resistant, and wants high temperature resistance, high pressure.The alloy centrifugal cast tube can directly use, also further pressure processing.Making the good seamless alloy pierced billet of structure property has the meaning of particular importance to development and national economy.
Centrifugal casting has had the developing history of last a century, utilizes centrifugal pressure can obtain the alloy cast tube of dense structure.In the past, the magnetic field that centrifugal casting process applies the steady weighing apparatus of level influences alloy graining, melt is because the rotation cutting magnetic line produces induced current, be subjected to the effect of electromagnetic force, generation is with respect to flow opposite with absolute rotary speed of solid liquid interface, and melt absolute flows speed reduces, and centrifugal pressure descends, centrifugal pressure descends excessive, can cause cast tube internal layer tissue looseness.The melt of Chan Shenging is mobile relatively in this case is passive flowing, and direction is opposite with the absolute rotary speed of melt all the time.The effect in steady weighing apparatus magnetic field can be smashed dendrite, thinning microstructure.
The object of the present invention is to provide a kind of manufacturing technology of seamless alloy pierced billet, it can control the distribution of different components in impurity and the hollow forging, and simple, convenient.
The invention provides a kind of manufacturing technology of seamless alloy pierced billet, it is characterized in that: hollow forging centrifugal casting in rotating excitation field is finished, the centrifugal rotational speed ω of alloy melt
0At 600～2500 rev/mins, the rotating excitation field angular velocity omega is at 500～2500 rev/mins, magnetic field intensity 0.01～0.2T.
The present invention proposes in the process of setting of centrifugal casting alloy hollow forging, adopt rotary electromagnetic field to purify impurity in the alloy, and the technical scheme that the distribution of alloying component and particle is controlled.Rotating excitation field can produce with alternating current, also can produce with rotating permanent magnet.Fig. 1 shows a kind of electromagnetic control apparatus.
Apply rotary electromagnetic field in the centrifugal casting process of setting, the magnetic line of force passes metal bath all the time.When rotating excitation field and the equidirectional rotation of centrifugal mold tube, and the angular velocity omega of rotating excitation field is greater than the rotary speed ω of mould tube
0The time, the melt metal melt can travel forward with respect to solid liquid interface under the effect of electromagnetic force, solidifies alloy part and always rotates with speed with the mould tube.As the angular velocity omega of rotating excitation field rotary speed ω less than the mould tube
0The time, melt can move with respect to solid liquid interface under the effect of electromagnetic force backward.By the control electromagnetic field, relative motion can be consistent with the direction of rotation of mould tube, also can be opposite with the direction of rotation of mould tube.The penetration depth of speed of Liu Donging and electromagnetic force can be controlled by rotary electromagnetic field relatively.
The electromagnetic property difference of different elements in the alloy melt, the electromagnetic property of solid phase particles that is rich in different elements is also inequality.Therefore utilize the electromagnetic property difference, different these characteristics of suffered electromagnetic force under identical rotating excitation field effect can be controlled component distributing and impurity purification in alloy graining process.
Before alloy graining, some impurity are unavoidably arranged, in the melt metal liquid as sulfide, oxide etc.Because impurity conductivity is low, under identical rotating excitation field effect, compares with alloy melt, the electromagnetic force that is subjected to is little, so its relative flowing velocity is low.When the direction of rotation of flow relatively velocity attitude and mould tube was consistent, the absolute centrifugal rotational speed of alloy melt was big, and the absolute centrifugal rotational speed of impurity is little, and impurity can move to inner surface, and final set is at the internal layer of hollow forging.By further processing inner surface again, impurity can be cleaned out, and the alloy hollow forging is purified.Lift an object lesson explanation below.
Accompanying drawing 1 is centrifugal casting process of setting electromagnetic control apparatus cross section sketch.
Embodiment 1
The hot piercing of 0Cr17Mn14Mo2N two phase stainless steel is very difficult, adopts the centrifugal casting hollow bloom, and direct cold rolling is produced seamless steel pipe, the lumber recovery height, and flow process is short.Adopt and install 1500 ℃ of cast 1400 rev/mins of centrifugal rotational speeds as shown in Figure 1.Number of magnet poles is 2 pairs, rotating excitation field and the equidirectional rotation of centrifugal mold tube, and alternating current is through variable frequency adjustment, and the angular speed that makes rotating excitation field is 1500 rev/mins, and magnetic field intensity is 0.06T.Solidify end of a period, oxide, sulfide, nitride gather partially at inner surface, remove by further turning, and strand is purified.When the room temperature contraction percentage of area of strand is rotated magnetic field by original not adding 28% brings up to 48%, is the cold rolling condition of having created.
By the control rotating excitation field, reach the purpose that control element distributes.Following example can illustrate this method.
Have nascent silicon to generate mutually in the Al-7wt%Si alloy graining process, the electrical conductivity of primary silicon phase is little, under identical rotating excitation field effect, compares with the Al-Si alloy melt, and suffered electromagnetic force is little.Utilize above-mentioned principle, the control electromagnetic field makes relative flow direction consistent with the absolute direction of rotation of mould tube, adjusts the frequency and the intensity of electromagnetic field, and the controllable silicon element is poly-partially to internal layer.Change the rotary speed of rotary electromagnetic field, make relative flow direction opposite with the absolute direction of rotation of mould tube, the controllable silicon element is poly-partially to skin.Thereby by applying the purpose that rotating excitation field can reach the control element distribution.760 ℃ of cast, 1600 rev/mins of centrifugal rotational speeds, rotating excitation field is consistent with the centrifugal rotational speed direction, and 4 pairs of number of magnet poles exchange through variable frequency adjustment, and rotating excitation field reaches ω=1800 rev/min, B=0.04T.Solidify end of a period, the Si element is in the internal layer enrichment, and concentration has reached 8.5% (wt%).Rotating excitation field is identical with mould tube direction of rotation, 1400 rev/mins of rotary speeies.Solidify end of a period, the Si element is in the middle part enrichment, and concentration is up to 8.1% (wt%).
Embodiment 3
Technic metal is pure Al, and the enhancing particle is SiC, granularity 100um.General centrifugal casting, 1200 rev/mins of centrifugal rotational speeds pour into centrifugal casting machine to mixed uniformly complex phase notes, obtain multiple tube.At this moment have composite bed at outer surface, the SiC grain density is very big herein, a similar ceramic layer, and inside only is the Al matrix, and no SiC particle exists, and this mainly is because the density contrast of Al, SiC particle causes.Apply rotating excitation field by rotating permanent magnet in centrifugal casting process, a pair of magnetic pole of permanent magnet, the centrifugal rotational speed of melt are 1200 rev/mins, and rotating excitation field and centrifugal mold tube rotate in the same way, and rotating speed is 1400 rev/mins, B=0.06T.Solidify the multiple tube of end of a period, also there is the SiC particle in inside, and through check, particle is evenly distributed at whole section.Continue to improve magnetic induction intensity and rotating excitation field angular speed, B=0.08T, ω=1600 rev/min, and raising pouring temperature, T=830 ℃.Solidify end of a period, the SiC particle improves in internal layer density in the sample.This is to have utilized Al different with the electromagnetic property of SiC particle, the electrical conductivity height of Al, and the electrical conductivity of SiC particle is low.
Can in alloy centrifugal casting solidification process, reach purification impurity by present technique, reduce component segregation, the purpose of the distribution of control element and particle.
Claims (3)
1. the manufacturing technology of a seamless alloy pierced billet, it is characterized in that: hollow forging centrifugal casting in rotating excitation field is finished, the centrifugal rotational speed ω of alloy melt
0At 600～2500 rev/mins, the rotating excitation field angular velocity omega is at 500～2500 rev/mins, magnetic field intensity 0.01～0.2T.
2. according to the manufacturing technology of the described seamless alloy pierced billet of claim 1, it is characterized in that: rotating excitation field is identical with the direction of rotation of alloy melt.
3. according to the manufacturing technology of the described seamless alloy pierced billet of claim 1, it is characterized in that: rotating excitation field is opposite with the direction of rotation of alloy melt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121098A CN1084234C (en) | 1998-12-18 | 1998-12-18 | Technology for manufacturing seamless alloy pierced billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121098A CN1084234C (en) | 1998-12-18 | 1998-12-18 | Technology for manufacturing seamless alloy pierced billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1257765A true CN1257765A (en) | 2000-06-28 |
| CN1084234C CN1084234C (en) | 2002-05-08 |
Family
ID=5227010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98121098A Expired - Fee Related CN1084234C (en) | 1998-12-18 | 1998-12-18 | Technology for manufacturing seamless alloy pierced billet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1084234C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406514A (en) * | 2013-08-30 | 2013-11-27 | 西南大学 | Method for centrifugally casting self-generated particle-reinforced cylinder sleeve |
| CN103406515A (en) * | 2013-08-30 | 2013-11-27 | 西南大学 | Method for centrifugally casting self-generated particle-reinforced piston |
| CN103433449A (en) * | 2013-08-30 | 2013-12-11 | 西南大学 | Method for centrifugally casting added particles reinforced piston |
| CN103433450A (en) * | 2013-08-30 | 2013-12-11 | 西南大学 | Method for manufacturing chip integrated unit |
| CN103447496A (en) * | 2013-08-30 | 2013-12-18 | 西南大学 | Method for centrifugal casting of added particle reinforcement cylinder sleeve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088496A (en) * | 1992-12-19 | 1994-06-29 | 中国石油化工总公司发展部 | Electromagnetic certrifugal casting technology |
| CN2194776Y (en) * | 1993-04-10 | 1995-04-19 | 中国科学院金属研究所 | Apparatus for centrifugal casting metal-base composite in electromagnetic field |
-
1998
- 1998-12-18 CN CN98121098A patent/CN1084234C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406514A (en) * | 2013-08-30 | 2013-11-27 | 西南大学 | Method for centrifugally casting self-generated particle-reinforced cylinder sleeve |
| CN103406515A (en) * | 2013-08-30 | 2013-11-27 | 西南大学 | Method for centrifugally casting self-generated particle-reinforced piston |
| CN103433449A (en) * | 2013-08-30 | 2013-12-11 | 西南大学 | Method for centrifugally casting added particles reinforced piston |
| CN103433450A (en) * | 2013-08-30 | 2013-12-11 | 西南大学 | Method for manufacturing chip integrated unit |
| CN103447496A (en) * | 2013-08-30 | 2013-12-18 | 西南大学 | Method for centrifugal casting of added particle reinforcement cylinder sleeve |
| CN103406514B (en) * | 2013-08-30 | 2015-11-18 | 西南大学 | The method of the spontaneous particle reinforce cylinder jacket of a kind of centrifugal casting |
| CN103406515B (en) * | 2013-08-30 | 2015-12-02 | 西南大学 | The method of the spontaneous granule reinforced piston of a kind of centrifugal casting |
| CN103433450B (en) * | 2013-08-30 | 2016-04-20 | 西南大学 | A kind of preparation method of integrated chip unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1084234C (en) | 2002-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103600045B (en) | The metal continuous cast technique that electromagnetic exciting composite machine stirs and device for casting of metal | |
| Kou et al. | Macrosegregation in rotated remelted ingots | |
| CN104827007B (en) | The continuous casting preparation method of large-scale uniform formation's alloy pig and magnetic control electro-slag continuous casting device | |
| CN1060695C (en) | Continuous and semicontinuous method preparing gradient material | |
| CN102430732B (en) | Device and process for internal and external cooling continuous casting of magnesium alloy and aluminum alloy ingot blanks | |
| CN203639530U (en) | Composite electroslag casting device for optimizing metal solidification structure by using steady-state magnetic field | |
| CN106282620B (en) | A method of there is diffusion-type composite solidification tissue Al-Bi alloy by addition nucleating agent preparation | |
| CN1084234C (en) | Technology for manufacturing seamless alloy pierced billet | |
| CN1102469C (en) | Continuous casting equipment and method for composite roller | |
| CN108526424B (en) | Magnetic field generator of dual-frenquency electromagnetic stirring | |
| CN1425519A (en) | Aluminium alloy low frequency electromagnetic oscillation semicontinuous casting crystal grain fining method and device | |
| CN103233140A (en) | Synchronizer converter ring, casting process method and electromagnetic stirring and casting device thereof | |
| CN106282615B (en) | A kind of preparation method with diffusion-type composite solidification tissue Al-Pb or Al-Bi alloy | |
| CN2395829Y (en) | Electromagnetic exciting centrifugal casting device | |
| CN204385267U (en) | A kind of induction stirring high-shear melt treatment and self-clearing device | |
| CN102642013A (en) | Method and device for improving quality of high-temperature alloy master alloy ingot by applying compound electromagnetic field | |
| CN1125649A (en) | Electroslag casting guide blade technological process and equipment | |
| CN1718315A (en) | Preparation method of high speed steel blank and its equipment | |
| CN108517434B (en) | Cu-Cr alloy containing trace Pb element and solidification preparation method thereof | |
| CN1206060C (en) | Method for preparing metal base self-gradient composite rod material and pipe material by using electromagnetic separation process | |
| CN106282632B (en) | A method of there is diffusion-type composite solidification tissue Al-Pb alloy by addition nucleating agent preparation | |
| CN1076148A (en) | Centrifugal casting process for hollow casts of high-Al-Zn-base alloy | |
| JPS6333167A (en) | Dropping type casting method | |
| CN2860681Y (en) | Electromagnetic separating continuous preparing device for metal-base autogenic gradient composite pipe | |
| CN1049168C (en) | Controllable casting technology for monotectic alloy antifriction bearing material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |