CN106399750A - Vehicle-mounted oil-saving alloy and preparation method thereof - Google Patents

Vehicle-mounted oil-saving alloy and preparation method thereof Download PDF

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Publication number
CN106399750A
CN106399750A CN201610883941.3A CN201610883941A CN106399750A CN 106399750 A CN106399750 A CN 106399750A CN 201610883941 A CN201610883941 A CN 201610883941A CN 106399750 A CN106399750 A CN 106399750A
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alloy
vehicle
whole
economizing
minutes
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刘�东
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NANJING CHAOXU ENERGY TECHNOLOGY Co Ltd
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NANJING CHAOXU ENERGY TECHNOLOGY Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • C22C9/06Alloys based on copper with nickel or cobalt as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C30/00Alloys containing less than 50% by weight of each constituent
    • C22C30/02Alloys containing less than 50% by weight of each constituent containing copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C30/00Alloys containing less than 50% by weight of each constituent
    • C22C30/04Alloys containing less than 50% by weight of each constituent containing tin or lead
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C30/00Alloys containing less than 50% by weight of each constituent
    • C22C30/06Alloys containing less than 50% by weight of each constituent containing zinc
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • C22C9/02Alloys based on copper with tin as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • C22C9/04Alloys based on copper with zinc as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • C22C9/08Alloys based on copper with lead as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses vehicle-mounted oil-saving alloy and a preparation method thereof. The vehicle-mounted oil-saving alloy comprises, by weight, 45%-65% of Cu, 6%-18% of Ni, 11%-33% of Zn, 1%-15% of Sn, 1%-30% of Pb, 0.01%-5% of Fe, 0.1%-8% of Sb, 1%-30% of Ag, and 0.1%-5% of Mn, and all the components form the columnar crystal alloy which grows in an orientated mode along the S100 crystal axis. The vehicle-mounted oil-saving alloy obtained through the method is the columnar crystal alloy which grows in the orientated mode along the S100 crystal axis. In the way that impurities in a fuel system are removed by changing the molecular dimension of the fuel system through friction between fuel oil and the alloy surface and physical catalysis under the condition that constituents of a solution and structural parameters of an engine are not changed, the purpose of naturally reducing carbon deposition of the engine for protecting the engine and reducing the maintenance frequency of the engine are achieved. Extra maintenance is not needed in the operating process, the vehicle-mounted oil-saving alloy is nonmagnetic and nonelectric, an additional power supply is not needed, and no agent needs to be added.

Description

A kind of alloy for vehicle-mounted fuel-economizing and preparation method thereof
Technical field
The present invention relates to a kind of alloy material, particularly to a kind of for vehicle-mounted fuel-economizing alloy and preparation method thereof.
Background technology
Oil consumption problem is increasingly paid attention to by people in daily life.In most of the cases, due to pipeline road system Fluid in system is mixed solution state, wherein solution molecule size state again with solution composition composition, polymer concentration, temperature The many factors such as degree, partial pressure are related.Once the condition in solution system changes, solute molecule size also can change therewith Become.When the activity increase of solution, molecular structure tinyization in solution can be made, solution molecule just participates in fully burning, and reaches Fuel-economizing and the purpose of lifting power.The factor of impact automobile fuel consumption mainly has the wind that four big class are the weight of automobile, vehicle body respectively Resistance coefficient, engine technology, the driving habit of driver.The air resistance coefficient change of the wherein weight of automobile and vehicle body can lead to vapour The jumping up of car fare lattice.For most people, just can only change get used to of engine technology and driver.And start Machine is that a more complicated device can not arbitrarily be changed, but can improve its efficiency.When fuel molecule changes, On the one hand, fuel molecule structure tiny so that burning more abundant.On the other hand, the too high levels of fuel oil alkene, use During can produce colloid substance, accumulate in inlet manifold and valve guide bushing position.When electromotor is in normal working temperature, Phenomenon without exception;And after working as engine misses cooling a period of time, these colloids can be bonded at valve in valve guide bushing.At this moment rise Dynamic electromotor, will occur top gas door phenomenon.Fuel molecule changes and will avoid top gas door phenomenon.People for a long time Carrying out scientific research always, find and there is the new material being capable of fuel-economizing.
Content of the invention
Goal of the invention:For solving the problems, such as vehicle-mounted fuel-economizing, the present invention proposes a kind of alloy for vehicle-mounted fuel-economizing and its preparation Method.
Technical scheme:A kind of alloy for vehicle-mounted fuel-economizing, includes following constituent by weight percentage:Cu:45%- 65%th, Ni:6%-18%, Zn:11%-33%, Sn:1%-15%, Pb:1%-30%, Fe:0.01%-5%, Sb:0.1%- 8%th, Ag:1%-30%, Mn:0.1%-5%, described each component forms a kind of column along S100 crystallographic axis oriented growth through chemical combination Crystalline alloy.
Preferably, include following constituent by weight percentage:Cu:52%-62%, Ni:8%-16%, Zn:12- 22%th, Sn:1.5%-6%, Pb:3%-10%, Fe:0.1%-2%, Sb:0.2%-2%, Ag:3%-30%, Mn:0.2%- 2%, described each component forms a kind of column crystal alloy along S100 crystallographic axis oriented growth through chemical combination.
It is furthermore preferred that including following constituent by weight percentage:Cu:55.6%th, Ni:13.5%th, Zn:15.6%th, Sn:2.7%th, Pb:6.5%th, Fe:0.7%th, Sb:0.8%th, Ag:3.8%th, Mn:0.7%, described each component forms one through chemical combination Plant the column crystal alloy along S100 crystallographic axis oriented growth.
A kind of preparation method for vehicle-mounted fuel-economizing alloy, comprises the steps:Percentage by weight by above-mentioned each component Prepare raw material, material purity is more than 99.9% block, its volume is less than or equal to 3cm3;In heating furnace crucible Spread into the thick Linesless charcoal of 2cm~3cm, by weight the semi-homogeneous that Cu expects be layered on Linesless charcoal, then uniformly spread on Cu material into All Ni blocks, repave into the thick Linesless charcoal of 2cm~3cm, blow-on after adding whole Pb, Sb blocks is warming up to 1000 DEG C -1100 DEG C, treats All after metal molten, add whole Fe blocks, stir and after all dissolving to metal, add whole Mn blocks, be incubated 3 minutes ~5 minutes, molten metal is made to deaerate;Then according to Zn, Sn, Ag and remaining Cu order add, low rate mixing, treat that metal is whole After fusing, removing dross, make melt temperature be reduced to 1100 DEG C~1200 DEG C, molten metal injection is poured in pattern tool, cooling Crust to metal surface within 10 minutes~15 minutes and form ingot, then water-cooled, to room temperature, takes out ingot.
Further, described heating furnace is induction furnace.
Operation principle:The present invention has excellent chemical stability using Cu-Ni bianry alloy, corrosion resistant in various environment Corrosion can be very outstanding, cold and hot working excellent performance, moderate cost.Although Cu-Ni alloy system electronegativity is less than solution, due to Chemical stability very well, and on the basis of Cu-Ni bianry alloy, selects Zn to be added as alloying element, and wherein, Zn is electricity One of minimum metallic element of negativity, can form stable Cu-Ni-Zn ternary alloy three-partalloy with Cu-Ni alloy.The metal adding Pb, Sb so that under alloy molten state good fluidity it is easy to cast molding, self discharge can be reduced and improve corrosion resistance, reduce The generation of byproduct hydrogen gas, thus reduce the detonation probability of electromotor.Contain certain element sulphur in view of in fuel oil, be additionally added Metal Ag, Ag are in addition to one of maximum alloying element of electronegativity beyond rare earth and radioelement, and Ag is in Cu-Ni-Zn alloy In almost insoluble, mainly occurred with free state, preferable distribution be obtained in that by rational Composition Control and heat processing technique State.With the increase of Ag content, reactivity is gradually increased, and can strengthen sulfuration resistant performance, reduces the sulfur content of tail gas, simultaneously Can also strengthen, performance that is wear-resisting and improving alloy rigidity.Therefore, the present invention can optimize exhaust emissions moreover it is possible to optimize cylinder Detonation probability, simultaneously because the hardness of alloy is improved, improves alloy wear-resisting performance, heat conductivility.The conjunction of specific discharge Golden consumption is fewer, and holistic cost has more advantage.When fuel oil flows through this alloy, through high-temperature heating, volumetric expansion, and it is subject to The catalytic action of alloy is so that fuel molecule structure becomes the relatively small fuel oil unimolecule of structure so that burning is more abundant; Alloy chip also has the function of purifying fuel oil so that engine interior carbon distribution reduces, thus reaching the purpose of fuel-economizing.
Beneficial effect:With respect to prior art, the vehicle-mounted fuel-economizing alloy that the present invention is obtained is to orient life along S100 crystallographic axis Long column crystal alloy, it in the case of not changing the structural parameters of solution composition composition and electromotor, by fuel oil with The friction of alloy face and the molecular size of physics catalysis change fuel system, purify the mode of impurity therein, reach nature and reduce Carbon on engine forms protection electromotor, reduces the purpose of engine maintenance frequency.Running does not need additional maintenance, no magnetic No electricity is it is not necessary to additional power source adds medicament.
Specific embodiment
Below the case study on implementation of the present invention is described in detail;
Embodiment one:
A kind of alloy for vehicle-mounted fuel-economizing, includes following constituent by weight percentage:Cu:45%th, Ni:6%th, Zn:15%th, Sn:4%th, Pb:10%th, Fe:5%th, Sb:5%th, Ag:5%th, Mn:5%, described each component forms a kind of edge through chemical combination The column crystal alloy of S100 crystallographic axis oriented growth.
Prepare raw material by the percentage by weight of above-mentioned each component, material purity is more than 99.9% block, its Volume is less than or equal to 3cm3;Spread into the thick Linesless charcoal of 2cm~3cm in heating furnace crucible, by weight will be equal for half that Cu expects Even be layered on Linesless charcoal, then uniformly spread on Cu material into whole Ni blocks, repave into the thick Linesless charcoal of 2cm~3cm, add whole Pb, After Sb block, blow-on is warming up to 1000 DEG C -1100 DEG C, after whole metal moltens, adds whole Fe blocks, stirs complete to metal Portion adds whole Mn blocks after dissolving, be incubated 3 minutes~5 minutes, so that molten metal is deaerated;Then according to Zn, Sn, Ag and surplus Remaining Cu order adds, low rate mixing, after metal all melts, removing dross, and make melt temperature be reduced to 1100 DEG C~1200 DEG C, molten metal injection is poured in pattern tool, cooling is crusted to metal surface and formed ingot, then for 10 minutes~15 minutes Water-cooled, to room temperature, takes out ingot.
Embodiment two:
A kind of alloy for vehicle-mounted fuel-economizing, includes following constituent by weight percentage:Cu:55.6%th, Ni: 13.5%th, Zn:15.6%th, Sn:2.7%th, Pb:6.5%th, Fe:0.7%th, Sb:0.8%th, Ag:3.8%th, Mn:0.7%, described each Component forms a kind of column crystal alloy along S100 crystallographic axis oriented growth through chemical combination.
Prepare raw material by the percentage by weight of above-mentioned each component, material purity is more than 99.9% block, its Volume is less than or equal to 3cm3;Spread into the thick Linesless charcoal of 2cm~3cm in heating furnace crucible, by weight will be equal for half that Cu expects Even be layered on Linesless charcoal, then uniformly spread on Cu material into whole Ni blocks, repave into the thick Linesless charcoal of 2cm~3cm, add whole Pb, After Sb block, blow-on is warming up to 1000 DEG C -1100 DEG C, after whole metal moltens, adds whole Fe blocks, stirs complete to metal Portion adds whole Mn blocks after dissolving, be incubated 3 minutes~5 minutes, so that molten metal is deaerated;Then according to Zn, Sn, Ag and surplus Remaining Cu order adds, low rate mixing, after metal all melts, removing dross, and make melt temperature be reduced to 1100 DEG C~1200 DEG C, molten metal injection is poured in pattern tool, cooling is crusted to metal surface and formed ingot, so for 10 minutes~15 minutes Water-cooled, to room temperature, takes out ingot afterwards.
Embodiment three:
A kind of alloy for vehicle-mounted fuel-economizing, includes following constituent by weight percentage:Cu:52%th, Ni:8%th, Zn:22%th, Sn:1.5%th, Pb:6%th, Fe:2%th, Sb:0.2%th, Ag:6.3%th, Mn:2%, described each component is formed through chemical combination A kind of column crystal alloy along S100 crystallographic axis oriented growth.
Prepare raw material by the percentage by weight of above-mentioned each component, material purity is more than 99.9% block, its Volume is less than or equal to 3cm3;Spread into the thick Linesless charcoal of 2cm~3cm in heating furnace crucible, by weight will be equal for half that Cu expects Even be layered on Linesless charcoal, then uniformly spread on Cu material into whole Ni blocks, repave into the thick Linesless charcoal of 2cm~3cm, add whole Pb, After Sb block, blow-on is warming up to 1000 DEG C -1100 DEG C, after whole metal moltens, adds whole Fe blocks, stirs complete to metal Portion adds whole Mn blocks after dissolving, be incubated 3 minutes~5 minutes, so that molten metal is deaerated;Then according to Zn, Sn, Ag and surplus Remaining Cu order adds, low rate mixing, after metal all melts, removing dross, and make melt temperature be reduced to 1100 DEG C~1200 DEG C, molten metal injection is poured in pattern tool, cooling is crusted to metal surface and formed ingot, then for 10 minutes~15 minutes Water-cooled, to room temperature, takes out ingot.
Example IV:
A kind of alloy for vehicle-mounted fuel-economizing, includes following constituent by weight percentage:Cu:57%th, Ni:9%th, Zn:14%th, Sn:2%th, Pb:4%th, Fe:1.5%th, Sb:0.5%th, Ag:12%th, Mn:1%, described each component forms one through chemical combination Plant the column crystal alloy along S100 crystallographic axis oriented growth.
Prepare raw material by the percentage by weight of above-mentioned each component, material purity is more than 99.9% block, its Volume is less than or equal to 3cm3;Spread into the thick Linesless charcoal of 2cm~3cm in heating furnace crucible, by weight will be equal for half that Cu expects Even be layered on Linesless charcoal, then uniformly spread on Cu material into whole Ni blocks, repave into the thick Linesless charcoal of 2cm~3cm, add whole Pb, After Sb block, blow-on is warming up to 1000 DEG C -1100 DEG C, after whole metal moltens, adds whole Fe blocks, stirs complete to metal Portion adds whole Mn blocks after dissolving, be incubated 3 minutes~5 minutes, so that molten metal is deaerated;Then according to Zn, Sn, Ag and surplus Remaining Cu order adds, low rate mixing, after metal all melts, removing dross, and make melt temperature be reduced to 1100 DEG C~1200 DEG C, molten metal injection is poured in pattern tool, cooling is crusted to metal surface and formed ingot, then for 10 minutes~15 minutes Water-cooled, to room temperature, takes out ingot.
Embodiment five:
A kind of alloy for vehicle-mounted fuel-economizing, includes following constituent by weight percentage:Cu:55%th, Ni:8.1%th, Zn:14%th, Sn:2%th, Pb:7%th, Fe:1.5%th, Sb:1.2%th, Ag:10%th, Mn:1.2%, described each component is formed through chemical combination A kind of column crystal alloy along S100 crystallographic axis oriented growth.
Prepare raw material by the percentage by weight of above-mentioned each component, material purity is more than 99.9% block, its Volume is less than or equal to 3cm3;Spread into the thick Linesless charcoal of 2cm~3cm in heating furnace crucible, by weight will be equal for half that Cu expects Even be layered on Linesless charcoal, then uniformly spread on Cu material into whole Ni blocks, repave into the thick Linesless charcoal of 2cm~3cm, add whole Pb, After Sb block, blow-on is warming up to 1000 DEG C -1100 DEG C, after whole metal moltens, adds whole Fe blocks, stirs complete to metal Portion adds whole Mn blocks after dissolving, be incubated 3 minutes~5 minutes, so that molten metal is deaerated;Then according to Zn, Sn, Ag and surplus Remaining Cu order adds, low rate mixing, after metal all melts, removing dross, and make melt temperature be reduced to 1100 DEG C~1200 DEG C, molten metal injection is poured in pattern tool, cooling is crusted to metal surface and formed ingot, then for 10 minutes~15 minutes Water-cooled, to room temperature, takes out ingot.
The alloy of the present invention is without magnetic, not charged, produced vibration when its energy is derived from electromotor work, oil, gas Friction when road pressure and flowing excites physics to be catalyzed.Not changing any structure and parameter of electromotor, and product is to oil, gas It is the physical property catalytic action (not having powder and chemical liquid) using solid-state, improve oil, makings amount from oil, gas circuit simultaneously, from And reach the brand-new energy-conserving product of thorough burning.

Claims (5)

1. a kind of alloy for vehicle-mounted fuel-economizing is it is characterised in that include following constituent by weight percentage:Cu:45%- 65%th, Ni:6%-18%, Zn:11%-33%, Sn:1%-15%, Pb:1%-30%, Fe:0.01%-5%, Sb:0.1%- 8%th, Ag:1%-30%, Mn:0.1%-5%, described each component forms a kind of column along S100 crystallographic axis oriented growth through chemical combination Crystalline alloy.
2. it is used for the alloy of vehicle-mounted fuel-economizing according to claim 1 it is characterised in that including by weight percentage forming as follows Composition:Cu:52%-62%, Ni:8%-16%, Zn:12-22%, Sn:1.5%-6%,
Pb:3%-10%, Fe:0.1%-2%, Sb:0.2%-2%, Ag:3%-30%, Mn:0.2%-2%, described each component Form a kind of column crystal alloy along S100 crystallographic axis oriented growth through chemical combination.
3. it is used for the alloy of vehicle-mounted fuel-economizing according to claim 1 it is characterised in that including by weight percentage forming as follows Composition:Cu:55.6%th, Ni:13.5%th, Zn:15.6%th, Sn:2.7%th, Pb:6.5%th, Fe:0.7%th, Sb:0.8%th, Ag: 3.8%th, Mn:0.7%, described each component forms a kind of column crystal alloy along S100 crystallographic axis oriented growth through chemical combination.
4. the preparation method for vehicle-mounted fuel-economizing alloy according to claim 1-3 any one is it is characterised in that include Following steps:Prepare raw material by the percentage by weight of described each component, material purity is more than 99.9% block, its Volume is less than or equal to 3cm3;Spread into the thick Linesless charcoal of 2cm~3cm in heating furnace crucible, by weight will be equal for half that Cu expects Even be layered on Linesless charcoal, then uniformly spread on Cu material into whole Ni blocks, repave into the thick Linesless charcoal of 2cm~3cm, add whole Pb, After Sb block, blow-on is warming up to 1000 DEG C -1100 DEG C, after whole metal moltens, adds whole Fe blocks, stirs complete to metal Portion adds whole Mn blocks after dissolving, be incubated 3 minutes~5 minutes, so that molten metal is deaerated;Then according to Zn, Sn, Ag and surplus Remaining Cu order adds, low rate mixing, after metal all melts, removing dross, and make melt temperature be reduced to 1100 DEG C~1200 DEG C, molten metal injection is poured in pattern tool, cooling is crusted to metal surface and formed ingot, then for 10 minutes~15 minutes Water-cooled, to room temperature, takes out ingot.
5. the preparation method for vehicle-mounted fuel-economizing alloy according to claim 3 is it is characterised in that described heating furnace is sense Answer stove.
CN201610883941.3A 2016-10-10 2016-10-10 Vehicle-mounted oil-saving alloy and preparation method thereof Pending CN106399750A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107312990A (en) * 2017-07-14 2017-11-03 南京超旭节能科技有限公司 A kind of homogenising treatment method of complete intelligent antiscaling, descaling alloy
CN107338368A (en) * 2017-07-14 2017-11-10 南京超旭节能科技有限公司 A kind of complete intelligent antiscaling, descaling alloy and preparation method thereof
CN114875273A (en) * 2022-04-22 2022-08-09 江苏艾速特低碳科技有限公司 Fuel-saving alloy carried by fuel filter and preparation method thereof
CN115747609A (en) * 2022-11-02 2023-03-07 浙江倍煌环保科技有限公司 Multi-element alloy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101240386A (en) * 2008-03-24 2008-08-13 金坛市恒旭科技有限公司 Copper-based catalyst alloy with anti-scaling function and preparation method thereof
CN102676866A (en) * 2011-03-16 2012-09-19 中国科学院金属研究所 Special alloy for diesel engine on saving oil and reducing emission and application of special alloy
CN103805808A (en) * 2014-01-26 2014-05-21 南京超旭节能科技有限公司 Scale-inhibition copper-based catalyst alloy and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101240386A (en) * 2008-03-24 2008-08-13 金坛市恒旭科技有限公司 Copper-based catalyst alloy with anti-scaling function and preparation method thereof
CN102676866A (en) * 2011-03-16 2012-09-19 中国科学院金属研究所 Special alloy for diesel engine on saving oil and reducing emission and application of special alloy
CN103805808A (en) * 2014-01-26 2014-05-21 南京超旭节能科技有限公司 Scale-inhibition copper-based catalyst alloy and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107312990A (en) * 2017-07-14 2017-11-03 南京超旭节能科技有限公司 A kind of homogenising treatment method of complete intelligent antiscaling, descaling alloy
CN107338368A (en) * 2017-07-14 2017-11-10 南京超旭节能科技有限公司 A kind of complete intelligent antiscaling, descaling alloy and preparation method thereof
CN114875273A (en) * 2022-04-22 2022-08-09 江苏艾速特低碳科技有限公司 Fuel-saving alloy carried by fuel filter and preparation method thereof
CN115747609A (en) * 2022-11-02 2023-03-07 浙江倍煌环保科技有限公司 Multi-element alloy

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Application publication date: 20170215