CN112030034A - Production process of high-quality QAL10-5-4 aluminum bronze alloy - Google Patents
Production process of high-quality QAL10-5-4 aluminum bronze alloy Download PDFInfo
- Publication number
- CN112030034A CN112030034A CN202010921602.6A CN202010921602A CN112030034A CN 112030034 A CN112030034 A CN 112030034A CN 202010921602 A CN202010921602 A CN 202010921602A CN 112030034 A CN112030034 A CN 112030034A
- Authority
- CN
- China
- Prior art keywords
- water jacket
- quality
- melt
- qal10
- rare earth
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a production process of high-quality QAL10-5-4 aluminum bronze alloy, scrap copper or purple scrap copper is used as a main raw material, a medium-frequency coreless induction furnace is selected for smelting, Ce-rich rare earth flux is added for refining and impurity removal, can achieve the effects of degassing, deslagging, melt purification, grain refinement and microalloying, effectively improve the structure and the comprehensive performance, ingot casting is carried out on a vertical semi-continuous casting machine, the melt in the crystallizer is covered by carbon ash and cryolite, the internal quality and the surface quality of the ingot casting are obviously improved, the comprehensive yield of the ingot casting is improved by 20 to 30 percent, the structure of the crystallizer is improved, the spiral water channel is arranged on the inner wall of the outer water jacket, and the flange with threads is arranged below the outer water jacket, so that the cooling process can be effectively controlled, the segregation and the looseness of internal components are further reduced, the defects of slag inclusion and cold sink on the surface of an ingot are reduced, and the yield and the quality of the ingot are effectively improved.
Description
Technical Field
The invention relates to the technical field of non-ferrous metal material processing, in particular to a production process of a high-quality QAl10-5-4 aluminum bronze alloy.
Background
The aluminum bronze QAl10-5-4 is mainly used for manufacturing high-strength wear-resistant parts and structural parts working below 400 ℃, such as gears, bearings, discs, guide rocker arm bushes, flywheels, fixing nuts, connecting pipes and the like, and the high-quality aluminum bronze QAl10-5-4 can also be used for manufacturing key wear-resistant and corrosion-resistant structural parts in the fields of nuclear power facilities, aerospace, weapon industry, electronic industry and the like and also can be widely applied to manufacturing turbine steam condensers of fuel power plants.
When the QAL10-5-4 aluminum bronze alloy is produced by adopting a vertical semi-continuous casting technology, the solidification process of metal in a crystallizer cannot be well controlled in the prior art, and the segregation and the looseness of internal components occur, so that the defects of slag inclusion, cold sink and the like occur on the surface layer of an ingot, the compactness of a casting is reduced, and the quality of the casting is influenced.
Disclosure of Invention
In order to overcome the above problems in the prior art, the present invention proposes the following technical solutions.
The technical scheme adopted by the invention for solving the technical problems is as follows: a production process of a high-quality QAl10-5-4 aluminum bronze alloy is characterized by comprising the following steps:
(1) preparing materials: preparing materials according to the standard or the requirement of a customer, wherein the mass percentages of the elements are as follows: al: 9.5-11% wt, Fe: 3.5-5.5% wt, Ni: 3.5-5.5% wt, scrap copper or purple scrap copper: the balance, carrying out primary conventional treatment such as impurity removal, degreasing and the like on the scrap copper or the purple impure copper, wherein Al is added in a Cu-35% Al intermediate alloy mode; preparing a rare earth flux: adding Ce-rich rare earth 0.5-1.5 wt% into flux with cryolite, borax and carbon ash as main components to obtain rare earth flux.
(2) Smelting: smelting by adopting a medium-frequency coreless induction furnace, putting Fe, Ni and the waste copper or the purple copper after primary treatment into a smelting furnace for smelting, covering by adopting charcoal, adding Cu-35% Al intermediate alloy after the raw materials are molten, controlling the smelting temperature at 1200-1250 ℃, and adding a rare earth flux into the melt for refining and modification treatment after all the raw materials are molten into the melt.
(3) Semi-continuous casting: casting ingots on a vertical semi-continuous casting machine, covering the melt in the crystallizer by using 33 wt% of carbon ash and 67 wt% of cryolite, uniformly and continuously scattering the melt on the surface of the melt along with the vibration of the crystallizer, wherein the thickness of the scattered covering agent is less than 1 mm.
The crystallizer comprises an inner water jacket and an outer water jacket, a cooling cavity is formed between the inner water jacket and the outer water jacket, a spiral water channel is formed in the inner wall of the outer water jacket, a flange is arranged below the outer water jacket, and threads are arranged on the surface of the flange.
According to the production process of the high-quality QAl10-5-4 aluminum bronze alloy, the inner water jacket and the outer water jacket are connected through bolts.
In the production process of the high-quality QAl10-5-4 aluminum bronze alloy, the inner water jacket is made of a high-strength graphite material.
In the production process of the high-quality QAl10-5-4 aluminum bronze alloy, the Ce content in the Ce-rich rare earth is 75-95 wt%.
In the production process of the high-quality QAl10-5-4 aluminum bronze alloy, the addition amount of the rare earth flux is 30-50 kg/ton.
The invention has the beneficial effects that: (1) the scrap copper is used as the main raw material to produce high-quality copper, the cost is lower, and the energy utilization rate is high; (2) the medium-frequency coreless induction furnace is adopted for smelting, and a bottom material does not need to be left like a cored induction furnace, so that the electric energy is obviously saved, and the service life of the furnace is prolonged; the casting production is implemented by adopting a mode of 'one furnace for one casting time', so that the production efficiency can be improved, the furnace washing and the alloy replacement are convenient, the flexibility and the maneuverability are realized, and the casting production of small-batch copper alloys is particularly facilitated; (3) the addition of a proper amount of rare earth elements into the copper melt can achieve the effects of degassing, deslagging, melt purification, grain refinement and microalloying, can effectively improve the structure, improve the comprehensive performance and create favorable conditions for subsequent processing; (4) cryolite in the covering agent makes Al on the surface of the melt2O3Film dissolution, remarkably improves the fluidity of the melt surface, thereby avoiding Al2O3Accumulating and slagging close to the inner wall of the crystallizer and turning into the surface layer of the cast ingot to form inclusion and cold shut defects; meanwhile, the added carbon ash can reduce the contact between the melt and air and can play a role in lubricating after metal on the surface of the melt flows into the inner wall of the crystallizer, so that the internal quality and the surface quality of the cast ingot are obviously improved, and the comprehensive yield of the aluminum bronze cast ingot is improved by 20-30%; (5) the crystallizer is improved, and the spiral water channel is arranged on the inner wall of the outer water jacket, so that the flow of cooling water between the inner water jacket and the outer water jacket of the crystallizer is increasedThe distance improves the cooling strength, and the threaded flange is designed at the lower end of the crystallizer to be connected with the outer sleeve, so that the pressure and the direction of secondary cooling water are rapidly adjusted by adjusting the position of the flange, the defects of segregation and looseness of internal components, slag inclusion and cold shut on the surface layer of the cast ingot and the like are further reduced, and the yield and the quality of the cast ingot are improved. The invention has simple structure and strong practicability.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a crystallizer according to the present invention.
In the figure, 1 is an inner water jacket, 2 is an outer water jacket, 3 is a spiral water channel, 4 is a cooling cavity, 5 is a flange, and 6 is a bolt.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[ example 1 ]
A production process of a high-quality QAl10-5-4 aluminum bronze alloy is characterized by comprising the following steps:
(1) preparing materials: preparing materials according to the standard or the requirement of a customer, wherein the mass percentages of the elements are as follows: al: 9.5-11% wt, Fe: 3.5-5.5% wt, Ni: 3.5-5.5% wt, scrap copper or purple scrap copper: the balance, carrying out primary conventional treatment such as impurity removal, degreasing and the like on the scrap copper or the purple impure copper, wherein Al is added in a Cu-35% Al intermediate alloy mode; preparing a rare earth flux: adding Ce-rich rare earth 0.5-1.5 wt% into flux with cryolite, borax and carbon ash as main components to obtain rare earth flux.
(2) Smelting: smelting by adopting a medium-frequency coreless induction furnace, putting Fe, Ni and the waste copper or the purple copper after primary treatment into a smelting furnace for smelting, covering by adopting charcoal, adding Cu-35% Al intermediate alloy after the raw materials are molten, controlling the smelting temperature at 1200-1250 ℃, and adding a rare earth flux into the melt for refining and modification treatment after all the raw materials are molten into the melt.
(3) Semi-continuous casting: casting ingots on a vertical semi-continuous casting machine, covering the melt in the crystallizer by using 33 wt% of carbon ash and 67 wt% of cryolite, uniformly and continuously scattering the melt on the surface of the melt along with the vibration of the crystallizer, wherein the thickness of the scattered covering agent is less than 1 mm.
The crystallizer comprises an inner water jacket 1 and an outer water jacket 2, a cooling cavity 4 is formed between the inner water jacket 1 and the outer water jacket 2, a spiral water channel 3 is formed in the inner wall of the outer water jacket 2, a flange 5 is arranged below the outer water jacket 2, and threads are arranged on the surface of the flange 5.
Further, the inner water jacket 1 and the outer water jacket 2 are connected through bolts 6.
Further, the inner water jacket 1 is made of high-strength graphite material.
Furthermore, the Ce content in the Ce-rich rare earth is 75-95% wt.
Furthermore, the addition amount of the rare earth flux is 30-50 kg/ton.
Comparative example 1
A production process of a high-quality QAl10-5-4 aluminum bronze alloy is characterized by comprising the following steps:
(1) preparing materials: preparing materials according to the standard or the requirement of a customer, wherein the mass percentages of the elements are as follows: al: 9.5-11% wt, Fe: 3.5-5.5% wt, Ni: 3.5-5.5% wt, scrap copper or purple scrap copper: the balance, carrying out primary conventional treatment such as impurity removal, degreasing and the like on the scrap copper or the purple impure copper, wherein Al is added in a Cu-35% Al intermediate alloy mode; preparing a rare earth flux: adding Ce-rich rare earth 0.5-1.5 wt% into flux with cryolite, borax and carbon ash as main components to obtain rare earth flux.
(2) Smelting: smelting by adopting a medium-frequency coreless induction furnace, putting Fe, Ni and the waste copper or the purple copper after primary treatment into a smelting furnace for smelting, covering by adopting charcoal, adding Cu-35% Al intermediate alloy after the raw materials are molten, controlling the smelting temperature at 1200-1250 ℃, and adding a rare earth flux into the melt for refining and modification treatment after all the raw materials are molten into the melt.
(3) Semi-continuous casting: casting ingots on a vertical semi-continuous casting machine, covering the melt in the crystallizer by using 33 wt% of carbon ash and 67 wt% of cryolite, uniformly and continuously scattering the melt on the surface of the melt along with the vibration of the crystallizer, wherein the thickness of the scattered covering agent is less than 1 mm.
Furthermore, the Ce content in the Ce-rich rare earth is 75-95% wt.
Furthermore, the addition amount of the rare earth flux is 30-50 kg/ton.
Comparing the ingots obtained in the example 1 with the ingots obtained in the comparative example 1, the example 1 adopts the improved crystallizer, so that the defects of slag inclusion, cold shut and the like on the surface layer of the ingot can be effectively reduced, the yield of the ingot reaches over 90 percent, and the head cutting, tail cutting and wagon loss of the example 1 are reduced by 30-40 percent compared with the example 1.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (5)
1. A production process of a high-quality QAl10-5-4 aluminum bronze alloy is characterized by comprising the following steps:
(1) preparing materials: preparing materials according to the standard or the requirement of a customer, wherein the mass percentages of the elements are as follows: al: 9.5-11% wt, Fe: 3.5-5.5% wt, Ni: 3.5-5.5% wt, scrap copper or purple scrap copper: the balance, carrying out primary conventional treatment such as impurity removal, degreasing and the like on the scrap copper or the purple impure copper, wherein Al is added in a Cu-35% Al intermediate alloy mode; preparing a rare earth flux: adding Ce-rich rare earth 0.5-1.5 wt% into flux with cryolite, borax and carbon ash as main components to obtain rare earth flux.
(2) Smelting: smelting by adopting a medium-frequency coreless induction furnace, putting Fe, Ni and the waste copper or the purple copper after primary treatment into a smelting furnace for smelting, covering by adopting charcoal, adding Cu-35% Al intermediate alloy after the raw materials are molten, controlling the smelting temperature at 1200-1250 ℃, and adding a rare earth flux into the melt for refining and modification treatment after all the raw materials are molten into the melt.
(3) Semi-continuous casting: casting ingots on a vertical semi-continuous casting machine, covering the melt in the crystallizer by using 33 wt% of carbon ash and 67 wt% of cryolite, uniformly and continuously scattering the melt on the surface of the melt along with the vibration of the crystallizer, wherein the thickness of the scattered covering agent is less than 1 mm.
The crystallizer comprises an inner water jacket (1) and an outer water jacket (2), a cooling cavity (4) is formed between the inner water jacket (1) and the outer water jacket (2), a spiral water channel (3) is formed in the inner wall of the outer water jacket (2), a flange (5) is arranged below the outer water jacket (2), and threads are arranged on the surface of the flange (5).
2. The production process of the high-quality QAl10-5-4 aluminum bronze alloy according to claim 1, wherein the connection between the inner water jacket (1) and the outer water jacket (2) is realized through bolts (6).
3. The production process of high quality QAl10-5-4 aluminum bronze alloy according to claim 1, wherein the inner water jacket (1) is high strength graphite material.
4. The process for producing a high quality QAl10-5-4 aluminum bronze alloy as claimed in claim 1, wherein the Ce content in the Ce rich rare earth is 75-95% wt.
5. The process for producing a high quality QAl10-5-4 aluminum bronze alloy as claimed in claim 1, wherein the amount of rare earth flux added is 30-50 kg/ton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921602.6A CN112030034A (en) | 2020-09-04 | 2020-09-04 | Production process of high-quality QAL10-5-4 aluminum bronze alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921602.6A CN112030034A (en) | 2020-09-04 | 2020-09-04 | Production process of high-quality QAL10-5-4 aluminum bronze alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112030034A true CN112030034A (en) | 2020-12-04 |
Family
ID=73591531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010921602.6A Pending CN112030034A (en) | 2020-09-04 | 2020-09-04 | Production process of high-quality QAL10-5-4 aluminum bronze alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112030034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333696A (en) * | 2021-06-01 | 2021-09-03 | 西峡龙成特种材料有限公司 | CuAlFeNi crystallizer copper plate back plate, parent metal and machining method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039387A (en) * | 2010-05-25 | 2011-05-04 | 胡遐秋 | Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology |
| CN102864334A (en) * | 2012-09-17 | 2013-01-09 | 山西春雷铜材有限责任公司 | Preparation method of copper-nickel disilicon-copper sheet strip |
| CN102912181A (en) * | 2012-10-26 | 2013-02-06 | 江苏大学 | Scandium-zirconium-strontium composite micro-alloyed nickel-aluminum bronze and method for manufacturing same |
| CN107794403A (en) * | 2016-09-01 | 2018-03-13 | 贵溪骏达特种铜材有限公司 | A kind of nickel aluminum bronze bar preparation methods of ZQA19 442 |
| CN111074089A (en) * | 2020-02-10 | 2020-04-28 | 天津市金龙焊接材料有限公司 | Wear-resistant corrosion-resistant multi-element manganese aluminum bronze brazing alloy and preparation method thereof |
-
2020
- 2020-09-04 CN CN202010921602.6A patent/CN112030034A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039387A (en) * | 2010-05-25 | 2011-05-04 | 胡遐秋 | Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology |
| CN102864334A (en) * | 2012-09-17 | 2013-01-09 | 山西春雷铜材有限责任公司 | Preparation method of copper-nickel disilicon-copper sheet strip |
| CN102912181A (en) * | 2012-10-26 | 2013-02-06 | 江苏大学 | Scandium-zirconium-strontium composite micro-alloyed nickel-aluminum bronze and method for manufacturing same |
| CN107794403A (en) * | 2016-09-01 | 2018-03-13 | 贵溪骏达特种铜材有限公司 | A kind of nickel aluminum bronze bar preparation methods of ZQA19 442 |
| CN111074089A (en) * | 2020-02-10 | 2020-04-28 | 天津市金龙焊接材料有限公司 | Wear-resistant corrosion-resistant multi-element manganese aluminum bronze brazing alloy and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333696A (en) * | 2021-06-01 | 2021-09-03 | 西峡龙成特种材料有限公司 | CuAlFeNi crystallizer copper plate back plate, parent metal and machining method thereof |
| CN113333696B (en) * | 2021-06-01 | 2023-02-17 | 西峡龙成特种材料有限公司 | CuAlFeNi crystallizer copper plate back plate, parent metal and machining method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102851575B (en) | Oxidation-resistant alloying grey cast iron and preparation method thereof | |
| CN101607306B (en) | Electroslag smelting casting method of fixed blades of water turbine | |
| CN110724861B (en) | High-performance aluminum alloy engine cylinder cover and casting method thereof | |
| CN101514398A (en) | High Cu-RE interalloy refining agent for refining scrap copper and preparation and application thereof | |
| CN111945053B (en) | Method for preparing high-speed steel roller by composite modification treatment | |
| CN112157220B (en) | Preparation method of Al-Cu-Mg-Mn series aluminum alloy casting | |
| CN105568122A (en) | Center segregation control method of phi280mm 30CrMo circular tube blank | |
| CN110983120A (en) | 300 MPa-grade high-strength plastic non-heat-treatment self-strengthening die-casting aluminum alloy and manufacturing method thereof | |
| CN114086027A (en) | High-temperature softening resistant Cu-Ni-Sn series high-strength high-elasticity copper alloy and preparation method thereof | |
| CN111004976B (en) | Nickel-saving type air valve alloy and preparation method thereof | |
| CN114393181A (en) | Ultrahigh-strength plastic-tough high manganese steel, assembled frog thereof and preparation method | |
| CN114293058A (en) | Preparation method of high-strength and high-toughness heat-treatment-free material suitable for castings with various wall thicknesses | |
| CN109468476B (en) | Method for improving comprehensive performance of copper alloy by adopting magnetic suspension process | |
| CN112210692B (en) | Beryllium bronze long guide rail and manufacturing method thereof | |
| CN112030034A (en) | Production process of high-quality QAL10-5-4 aluminum bronze alloy | |
| CN114318170A (en) | High-strength corrosion-resistant flange bolt for automobile and preparation process thereof | |
| CN112662922A (en) | Regenerated deformation aluminum alloy melt | |
| CN112359251A (en) | Preparation method and application of nickel-chromium-tungsten intermediate alloy | |
| CN114231849B (en) | Steel for offshore wind power turntable bearing and smelting method thereof | |
| CN113322402B (en) | High-strength corrosion-resistant wrought magnesium alloy | |
| CN107794403A (en) | A kind of nickel aluminum bronze bar preparation methods of ZQA19 442 | |
| CN111979448A (en) | QAL10-5-4 aluminum bronze alloy bar production process | |
| CN111961896B (en) | Preparation method of aluminum alloy casting | |
| CN111809074B (en) | Lanthanum-carbon-magnesium composite material, tellurium-copper alloy material and preparation method thereof | |
| CN113462971A (en) | Hot-working die large round billet and 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201204 |