CN107552804A - A kind of method of preparation and use of the alloy powder of slug type high-flux heat exchange - Google Patents
A kind of method of preparation and use of the alloy powder of slug type high-flux heat exchange Download PDFInfo
- Publication number
- CN107552804A CN107552804A CN201710789635.8A CN201710789635A CN107552804A CN 107552804 A CN107552804 A CN 107552804A CN 201710789635 A CN201710789635 A CN 201710789635A CN 107552804 A CN107552804 A CN 107552804A
- Authority
- CN
- China
- Prior art keywords
- powder
- alloy
- heat exchange
- preparation
- alloy powder
- 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
Landscapes
- Coating By Spraying Or Casting (AREA)
- Powder Metallurgy (AREA)
Abstract
A kind of method of preparation and use of the alloy powder of slug type high-flux heat exchange, belongs to metal material field.High-flux heat exchange is mainly characterized by, in the outer surface of metal base tube (including cupro-nickel pipe, carbon steel pipe and heat resisting pipe etc.) or inner surface manufacture metal porous layer, increasing vaporization nucleus calculation, can notable enhanced boiling heat transfer.Metal porous layer in base tube surface metallization powder and then the method being sintered mainly by forming at present, used metal dust is mainly the Cu bases of more than 70 μm of average grain diameter or Cu bases or Fe base alloy powders containing Ni, because the powder size of selection is big, causing aerosolization to prepare, powder yield is low, and cost is higher.Main component of the present invention is Fe (26~30) wt%Al (0~2Cr) wt% (2~4) wt%B, the alloy powder has the characteristics such as low, the anti-oxidant, anti-coking of sintering temperature, powder preparation is carried out using plasma rotary-atomizing powder-making technique simultaneously, particle diameter reaches 80% in 70 μm 140 μm of powder yield.The alloying component and powder yield of the comprehensive present invention, has obvious cost advantage compared with the existing alloy powder in market.
Description
Technical field
The invention belongs to metal material field, be related to a kind of alloy powder of slug type high-flux heat exchange preparation and
Application method.
Background technology
Tube with high flux heat exchanger is the high-performance heat exchanger for enhanced boiling heat transfer.It is mainly characterized by metal pipe
Outer surface or inner surface manufacture metal porous layer, can realize the efficient heat transfer under Low Temperature Difference.Core component in high flux heat exchanger
For high-flux heat exchange, slug type tube with high flux refers to the method using powder metallurgy in commonly heat exchange pipe surface sintering a thin layer
Porous surface efficient heat-exchanging pipe with specific structure.The depression of surface porous layer is interconnected with hole, can significantly strengthen
Boiling heat transfer, heat-transfer effect can improve more than 20 times.Suitable for the boiling heat transfer occasion with phase transformation, be widely used in oil refining,
The engineering fields such as petrochemical industry, chemical industry.
The material of high-flux heat exchange base tube mainly has Copper-nickel alloy tube, carbon steel pipe, heat resisting pipe etc., generally on its surface
The powder main component of sintering is FeNi alloys or CuNi alloys, and its particle diameter requires these powder in addition generally more than 200 mesh
The performance of base tube, that is, base tube mechanical property after the completion of sintering can not be damaged while specific pore structure is formed in sintering process
Remain to reach national standard, this requires that the sintering temperature of powder is as low as possible.Preparation currently used for the alloy powder of surface sintering
The method for mainly using common aerosolization, this method can obtain the powder of good sphericity, but granularity is more than 200 mesh (70 μm)
Powder accounting it is relatively low, cause the increase of powder manufacturing cost.Therefore the manufacturing cost of powder how is reduced, further improves and changes
The problem of integral product added value of hot device must take into consideration as heat exchanger enterprise.
The content of the invention
The present invention substitutes Cu and Ni elements costly, to reduce powder by selecting relatively inexpensive Fe, Al element
The cost of raw material, and substitute common gas-atomized powder by using plasma rotary-atomizing powder-making technique can be by powder
Recovery rate, can be with by reducing the cost of raw material and improving powder yield two ways by bringing up to more than 80% less than 30%
The manufacturing cost of powder is greatly lowered.In addition, by the optimization of Fe and Al ratios, excellent anti-oxidant and resistive connection can be obtained
Burnt performance, in addition on the basis of the component ratio of optimization, a small amount of Cr, B element are added in alloy powder further to be improved
The sintering character of powder, the composition of final design powder is Fe- (26~30) wt%Al- (0~2) wt%Cr- (2~4) wt%
B, the sintering temperature of the powder is less than 950 DEG C.Due to low sintering temperature, therefore sintering process will not cause to tube performance
Damage, be especially suitable for carbon steel pipe, the surface sintered powder material of heat resisting pipe.
A kind of preparation method of the alloy powder of slug type high-flux heat exchange, it is characterised in that：Powdered ingredients Fe-
(26~30) wt%Al- (0~2Cr) wt%- (2~4) wt%B, prepared using rotating plasma powder by atomization technology, powder grain
Degree is at 70-140 μm.
Further, when preparing powder using rotating plasma powder by atomization technology, its processing step is：First by being designed to
Divide and carry out dispensing, then dispensing is melted using vacuum melting technique and is cast into diameter more than 62mm, length more than 800mm's
Alloy pig, then alloy pig is processed into single diameter 60mm, length 700mm electrode bar, arc-plasma current intensity during powder processed
1100~1300A, voltage 65-75V, plasma gun and electrode bar distance 15-20cm, 350-450 revs/min of rotating speed, vacuum is small
In 5 × 10-3Pa。
The application method of the alloy powder prepared according to the method described above, it is characterised in that：It is Fe- (26~30) by composition
Wt%Al- (0~2Cr) wt%- (2~4) wt%B powder is carried out after being coated to carbon steel or heat-resistance stainless steel base tube using nitrogen atmosphere
Sintering, sintering temperature are 900 DEG C to 1000 DEG C, soaking time 30 to 60 minutes.Pore property and and base tube may finally be obtained
Combination degree can meet the porous sintered layer of requirement, while to tube performance not damaged.
It is an advantage of the current invention that the alloy powder of (1) design is mainly made up of Fe and Al elements, its cost is far below mesh
Preceding wide variety of Cu and Ni elements；(2) Fe- (26~30) wt%Al- (0 is prepared using rotating plasma powder by atomization technology
~2) during wt%Cr- (2~4) wt%B powder, powder accounting of the particle diameter more than 200 mesh (70 μm) reaches more than 80%, remote high
In the powder yield (30%) of current aerosolization technology；(3) designing the alloy powder in the range of composition has low sintering temperature
Degree, to the performance undamaged wound of base tube, while powder has high inoxidizability and corrosion resistance and excellent anti-coking in itself
Performance, it can be widely applied to a variety of working medium such as alkane, alkene, aromatic hydrocarbons, alcohols, water, freon, liquid nitrogen.
Brief description of the drawings：
Fig. 1 is the process chart of the present invention.
Embodiment:
Embodiment 1:Prepare 70-140 μm of particle diameter, the alloy powder that composition is Fe-26wt%Al-2wt%Cr-2wt%B
Alloy cast ingot is prepared using 50kg vacuum induction melting furnace, dispensing is carried out by alloy pig 40kg, according to design
Composition Fe-26wt%Al-2wt%Cr-2wt%B, pure iron should add 28kg, and pure Al adds 10.4kg, and pure Cr adds 0.8kg, pure
B adds 0.8kg, and a diameter of 62mm alloy pig is cast into by vacuum induction melting, is subsequently processed into diameter 60mm, length
700mm electrode bar, then powder preparation is carried out using rotating plasma powder-making technique, powder parameter processed is arc-plasma current intensity
1100A, voltage 75V, plasma gun and electrode bar distance 20cm, 350 revs/min of rotating speed, vacuum are less than 4.5 × 10-3Pa, finally
Obtained powder is sieved, retains powder of the particle diameter at 70-140 μm, others are cancelled powder and handled.Using above-mentioned work
The recovery rate of powder obtained by skill reaches 82%, it is sintered coated on carbon steel inside pipe wall, in 950 DEG C in hydrogen furnace
Sintering temperature under be incubated the porous sintered layer that 40 minutes i.e. availability meets to require, while the performance of base tube can also expire
The corresponding standard requirement of foot.
Embodiment 2：Prepare 70-140 μm of particle diameter, the alloy powder that composition is Fe-30wt%Al-1wt%Cr-3wt%B
Alloy cast ingot is prepared using 50kg vacuum induction melting furnace, dispensing is carried out by alloy pig 40kg, according to design
Composition Fe-26wt%Al-2wt%Cr-2wt%B, pure iron should add 26.4kg, and pure Al adds 12kg, and pure Cr adds 0.4kg, pure
B adds 1.2kg, and a diameter of 62mm alloy pig is cast into by vacuum induction melting, is subsequently processed into diameter 60mm, length
700mm electrode bar, then powder preparation is carried out using rotating plasma powder-making technique, powder parameter processed is arc-plasma current intensity
1300A, voltage 65V, plasma gun and electrode bar distance 15cm, 450 revs/min of rotating speed, vacuum are less than 4.5 × 10-3Pa, finally
Obtained powder is sieved, retains powder of the particle diameter at 70-140 μm, others are cancelled powder and handled.Using above-mentioned work
The recovery rate of powder obtained by skill reaches 82%, it is sintered coated on heat-resistance stainless steel inside pipe wall, in hydrogen furnace
It is the porous sintered layer that availability meets to require that 30min is incubated under 930 DEG C of sintering temperature, while the performance of base tube is also
It disclosure satisfy that corresponding standard requirement.
Claims (3)
- A kind of 1. preparation method of the alloy powder of slug type high-flux heat exchange, it is characterised in that：Powdered ingredients Fe- (26 ~30) wt%Al- (0~2Cr) wt%- (2~4) wt%B, prepared using rotating plasma powder by atomization technology, powder size At 70-140 μm.
- 2. the preparation method of the alloy powder according to a kind of slug type high-flux heat exchange described in claim 1, its feature It is：When preparing powder using rotating plasma powder by atomization technology, its processing step is：Dispensing first is carried out by design composition, Then dispensing is melted using vacuum melting technique and is cast into diameter more than the alloy pig of 62mm, length more than 800mm, then will Alloy pig is processed into single diameter 60mm, length 700mm electrode bar, 1100~1300A of arc-plasma current intensity during powder processed, Voltage 65-75V, plasma gun and electrode bar distance 15-20cm, 350-450 revs/min of rotating speed, vacuum are less than 5 × 10-3Pa。
- 3. the application method of the alloy powder prepared according to the methods described of claim 1 or 2, it is characterised in that：It is Fe- by composition (26~30) wt%Al- (0~2Cr) wt%- (2~4) wt%B powder uses hydrogen after being coated to carbon steel or heat-resistance stainless steel base tube Atmosphere is sintered, and sintering temperature is 900 DEG C to 1000 DEG C, soaking time 30 to 60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710789635.8A CN107552804B (en) | 2017-09-05 | 2017-09-05 | A kind of method of preparation and use of the alloy powder of slug type high-flux heat exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710789635.8A CN107552804B (en) | 2017-09-05 | 2017-09-05 | A kind of method of preparation and use of the alloy powder of slug type high-flux heat exchange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107552804A true CN107552804A (en) | 2018-01-09 |
| CN107552804B CN107552804B (en) | 2019-04-26 |
Family
ID=60979097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710789635.8A Active CN107552804B (en) | 2017-09-05 | 2017-09-05 | A kind of method of preparation and use of the alloy powder of slug type high-flux heat exchange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107552804B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907215A (en) * | 2018-08-07 | 2018-11-30 | 西安赛隆金属材料有限责任公司 | A kind of preparation method of 30Cr metal powder |
| CN110405220A (en) * | 2019-07-10 | 2019-11-05 | 陕西斯瑞新材料股份有限公司 | A method of GRCop-84 spherical powder is prepared based on plasma rotating atomization |
| CN111979390A (en) * | 2020-07-02 | 2020-11-24 | 中国船舶重工集团公司第七二五研究所 | Method for removing residual carbon on inner surface of small-caliber seawater copper-nickel pipe |
| CN112176369A (en) * | 2019-07-03 | 2021-01-05 | 中国科学院苏州纳米技术与纳米仿生研究所 | High-efficiency boiling heat transfer copper material and preparation method thereof |
| CN115533105A (en) * | 2022-08-30 | 2022-12-30 | 中国石油化工股份有限公司 | Low-temperature sintered surface porous heat exchange tube and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999039016A1 (en) * | 1998-02-02 | 1999-08-05 | Philip Morris Products Inc. | Iron aluminide composite and method of manufacture thereof |
| WO2001079573A1 (en) * | 2000-04-14 | 2001-10-25 | Chrysalis Technologies Incorporated | Processing of iron aluminides by pressureless sintering of elemental iron and aluminum |
| CN1433486A (en) * | 2000-06-08 | 2003-07-30 | 表面工程设计产品公司 | Coating system for high temperature stainless steel |
| WO2010094134A1 (en) * | 2009-02-23 | 2010-08-26 | Metafoam Technologies Inc. | Metal tube with porous metal liner |
| CN102653003A (en) * | 2012-05-09 | 2012-09-05 | 安泰科技股份有限公司 | Method for forming porous metal layer on pipe wall of heat exchange pipe |
| CN105734480A (en) * | 2015-12-09 | 2016-07-06 | 北京矿冶研究总院 | Method for improving corrosion resistance of lead-cooled neutron reactor structural component |
| CN106029267A (en) * | 2014-01-27 | 2016-10-12 | 罗瓦尔玛股份公司 | Centrifugal atomization of iron-based alloys |
-
2017
- 2017-09-05 CN CN201710789635.8A patent/CN107552804B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999039016A1 (en) * | 1998-02-02 | 1999-08-05 | Philip Morris Products Inc. | Iron aluminide composite and method of manufacture thereof |
| WO2001079573A1 (en) * | 2000-04-14 | 2001-10-25 | Chrysalis Technologies Incorporated | Processing of iron aluminides by pressureless sintering of elemental iron and aluminum |
| CN1433486A (en) * | 2000-06-08 | 2003-07-30 | 表面工程设计产品公司 | Coating system for high temperature stainless steel |
| WO2010094134A1 (en) * | 2009-02-23 | 2010-08-26 | Metafoam Technologies Inc. | Metal tube with porous metal liner |
| CN102653003A (en) * | 2012-05-09 | 2012-09-05 | 安泰科技股份有限公司 | Method for forming porous metal layer on pipe wall of heat exchange pipe |
| CN106029267A (en) * | 2014-01-27 | 2016-10-12 | 罗瓦尔玛股份公司 | Centrifugal atomization of iron-based alloys |
| CN105734480A (en) * | 2015-12-09 | 2016-07-06 | 北京矿冶研究总院 | Method for improving corrosion resistance of lead-cooled neutron reactor structural component |
Non-Patent Citations (1)
| Title |
|---|
| A.VKRAJNIKOV ET AL.: "Comparative study of morphology and surface composition of Al–Cr–Fe alloy powders produced by water and gas atomisation technologies", 《APPLIED SURFACE SCIENCE》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907215A (en) * | 2018-08-07 | 2018-11-30 | 西安赛隆金属材料有限责任公司 | A kind of preparation method of 30Cr metal powder |
| CN112176369A (en) * | 2019-07-03 | 2021-01-05 | 中国科学院苏州纳米技术与纳米仿生研究所 | High-efficiency boiling heat transfer copper material and preparation method thereof |
| CN110405220A (en) * | 2019-07-10 | 2019-11-05 | 陕西斯瑞新材料股份有限公司 | A method of GRCop-84 spherical powder is prepared based on plasma rotating atomization |
| CN111979390A (en) * | 2020-07-02 | 2020-11-24 | 中国船舶重工集团公司第七二五研究所 | Method for removing residual carbon on inner surface of small-caliber seawater copper-nickel pipe |
| CN115533105A (en) * | 2022-08-30 | 2022-12-30 | 中国石油化工股份有限公司 | Low-temperature sintered surface porous heat exchange tube and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107552804B (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107552804B (en) | A kind of method of preparation and use of the alloy powder of slug type high-flux heat exchange | |
| CN103358051B (en) | A kind of copper base solder and preparation method thereof | |
| CN104227263B (en) | A kind of low melting point high-strength aluminum alloy powder brazing alloy and preparation method thereof | |
| CN101367159B (en) | Cu-P based amorphous brazing filler metal and method for manufacturing the same | |
| CN101251351B (en) | Iron-based powder porous surface heat-exchanging tube and manufacture method thereof | |
| CN114505619B (en) | Nickel-based welding wire, manufacturing method of nickel-based welding wire and welding process of nickel-based welding wire | |
| CN102115834B (en) | Gold-copper-nickel alloy, preparation method and application thereof | |
| CN105603247A (en) | Graphene reinforced copper-rare earth based electrical contact material and preparing method thereof | |
| CN101109059A (en) | High resistivity high magnetic conduction martensite-ferrite diphasic stainless steel and thermal treatment technique thereof | |
| CN107146675A (en) | A kind of high-frequency low-consumption ferrous alloy magnetic and its manufacture method | |
| CN105609159B (en) | A kind of copper-plated graphite alkene enhancing copper-based electrical contact material and preparation method thereof | |
| CN105177568B (en) | Hot melt knot other carbide solid solution alloy coatings of tungsten carbide and preparation method thereof | |
| WO2004072313A2 (en) | Formation of metallic thermal barrier alloys | |
| CN107164680B (en) | A kind of preparation method of metal carbides solid solution | |
| CN104651657A (en) | Preparation method of enhanced type Fe-Ni-Co-based high temperature alloy through precipitation | |
| CN104353840B (en) | A kind of LED inexpensive lead-free solder alloy powders and preparation method thereof | |
| CN113737058A (en) | Nickel-based alloy for corrosion prevention of garbage incinerator, preparation method of nickel-based alloy powder and composite material | |
| CN102198570B (en) | Heating welding flux of copper-coated steel/steel grounding network | |
| CN105734480B (en) | Method for improving corrosion resistance of lead-cooled neutron reactor structural component | |
| WO2024003760A1 (en) | Composite magnetically permeable layer for pot, preparation method therefor, and pot | |
| CN106392082A (en) | Yttrium oxide-tungsten graded material as well as preparation method thereof and application thereof in manufacturing crucible for rare-earth smelting | |
| CN100360703C (en) | Process for preparing iron base non crystal state alloy by bar material plasma spraying | |
| CN113333759B (en) | Recycling method of phosphated neodymium iron boron waste | |
| CN102051501A (en) | High-strength high-conductivity Cu-Ni-Al conductor material and preparation method thereof | |
| CN114990383A (en) | Titanium alloy for improving yield ratio of electrode induction smelting inert gas atomized powder fine powder and atomized powder preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20180109 Assignee: HEBEI WUWEI AERO & POWER TECHNOLOGY CO.,LTD. Assignor: University OF SCIENCE AND TECHNOLOGY BEIJING Contract record no.: X2022990000711 Denomination of invention: Preparation and application method of alloy powder for sintered high flux heat exchange tube Granted publication date: 20190426 License type: Exclusive License Record date: 20220926 |
|
| EE01 | Entry into force of recordation of patent licensing contract |