CN110629066A - High-strength corrosion-resistant brass material and preparation method thereof - Google Patents
High-strength corrosion-resistant brass material and preparation method thereof Download PDFInfo
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- CN110629066A CN110629066A CN201910925211.9A CN201910925211A CN110629066A CN 110629066 A CN110629066 A CN 110629066A CN 201910925211 A CN201910925211 A CN 201910925211A CN 110629066 A CN110629066 A CN 110629066A
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- 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
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- 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
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Abstract
The invention discloses a high-strength corrosion-resistant brass material and a preparation method thereof, wherein the brass material comprises the following components in percentage by mass: cu: 60.9-64.2%, Si: 0.85-1.3%, Fe: 0.13-0.21%, Al: 1.69-1.97%, Ni: 0.71-1.58%, Sn: 0.1-0.27%, Nd: 0.07-0.26%, Os: 0.01-0.065%, Ti: 0.03 to 0.12%, Mn: 1.1-2.25%, B: 0.01-0.07%, and the balance of Zn and inevitable impurities. The preparation method of the high-strength corrosion-resistant brass material provided by the invention is simple in process, and the obtained brass material is high in strength and hardness, good in corrosion resistance and long in service life.
Description
Technical Field
The invention relates to the technical field of copper materials, in particular to a high-strength corrosion-resistant brass material and a preparation method thereof.
Background
Copper has physical and chemical properties similar to those of noble metals, particularly has excellent electrical conductivity, thermal conductivity, corrosion resistance, plasticity and cold and hot workability, and is widely applied to the fields of electricians, electrics, machinery, manufacturing of transportation vehicles, chemistry, national defense, buildings and the like. Brass is a copper-based alloy containing zinc as a main alloying element, and is widely used in various fields of national economy, such as manufacturing valves, water pipes, air-conditioning indoor and outdoor unit connecting pipes, radiators and the like. Along with the development of social economy, the demand on brass products is greater and greater, the requirements on the performance of the brass products are higher and higher, the existing brass materials generally have the defect of low strength, the corrosion resistance of the brass materials is still not ideal, and the application of the brass materials is limited.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a high-strength corrosion-resistant brass material and a preparation method thereof.
The invention provides a high-strength corrosion-resistant brass material which comprises the following components in percentage by mass: cu: 60.9-64.2%, Si: 0.85-1.3%, Fe: 0.13-0.21%, Al: 1.69-1.97%, Ni: 0.71-1.58%, Sn: 0.1-0.27%, Nd: 0.07-0.26%, Os: 0.01-0.065%, Ti: 0.03 to 0.12%, Mn: 1.1-2.25%, B: 0.01-0.07%, and the balance of Zn and inevitable impurities.
Preferably, the mass percentages of Mn and Si satisfy the following relationship: 2.47 is less than or equal to CMn/CSiLess than or equal to 2.61, wherein, CMnIs the mass percent of Mn, CSiIs the mass percentage of Si.
Preferably, the mass percentages of Ni, B and Nd satisfy the following relational expression: cNi≤31×CB+8×CNd+ 0.14%, wherein, CNi、CB、CNdAre respectively the mass percent of Ni, B and Nd.
Preferably, the mass percentages of Sn and Ni satisfy the following relational expression: 2.26 percent to CSn+2×CNiNot more than 3.32 percent and not more than 9.7 percent of CNi/CSnLess than or equal to 10.3, wherein, CNi、CSnAre respectively the mass percent of Ni and Sn.
The invention also provides a preparation method of the high-strength corrosion-resistant brass material, which comprises the following steps:
s1, weighing copper powder, pure silicon, iron powder, aluminum powder, nickel powder, tin powder, pure neodymium, pure osmium, titanium powder, copper-manganese intermediate alloy, copper-boron intermediate alloy and zinc powder according to the proportion;
s2, adding the copper powder, the pure silicon, the iron powder, the aluminum powder, the nickel powder, the tin powder, the pure neodymium, the pure osmium, the titanium powder, the copper-manganese intermediate alloy, the copper-boron intermediate alloy and the zinc powder weighed in the S1 into a smelting furnace for melting, then preserving heat for 8-12min at 1170-1250 ℃, and obtaining a brass ingot after casting;
s3, homogenizing the brass cast ingot, and then carrying out hot rolling, primary cold rolling, annealing and secondary cold rolling to obtain the high-strength corrosion-resistant brass material.
Preferably, in S2, the temperature of pouring is 980-.
Preferably, in S3, the temperature of the homogenization treatment is 825-845 ℃ and the time is 60-80 min.
Preferably, in S3, the temperature of the hot rolling is 830-850 ℃.
Preferably, in S3, the annealing time is 100-150min, and the temperature is 535+60 × CAlX 100, wherein, CAlIs the mass percentage of Al.
According to the high-strength corrosion-resistant brass material, Si, Fe, Al, Ni, Sn, Nd, Os, Ti, Mn and B are added on the basis of common brass, and annealing treatment is adopted, so that the microstructure of the brass material is changed greatly, is finer and more uniform, the strength and the hardness of the obtained brass material are high, and the corrosion resistance and the elongation are good; specifically, Sn is added, Ni is added in a matching way, and the mass percentages of Sn and Ni satisfy the following relational expression: 2.26 percent to CSn+2×CNiNot more than 3.32 percent and not more than 9.7 percent of CNi/CSnLess than or equal to 10.3, wherein, CNi、CSnThe Ni and the Sn are respectively in mass percent, so that the strength and the ductility of the obtained brass material are balanced, the discoloration resistance and the corrosion resistance of the brass material are improved, B, Nd is added, and the mass percent of Ni, B and Nd satisfies the following relational expression: cNi≤31×CB+8×CNd+ 0.14%, wherein, CNi、CB、CNdThe Ni, the B and the Nd are respectively in mass percentage, so that the strength and the hardness of the brass material are obviously improved, the reduction of the elongation rate caused by the addition of the Ni is improved, and the obtained brass material has excellent mechanical properties; si, Mn, Os and Al are added, and the mass percentage of Mn and Si satisfies the following relational expression: 2.47 is less than or equal to CMn/CSiLess than or equal to 2.61, wherein, CMnIs the mass percent of Mn, CSiThe mass percentage of Si regulates the matrix structure of brass to ensure that the beta phase of the systemThe addition of Al plays a role in refining crystal grains, and simultaneously enables crystal lattices of crystals to generate certain distortion, so that the deformation resistance of the material under an external force field is increased, the tensile strength and the hardness of the brass material are improved, and meanwhile, Al and Si form an oxide film, so that the corrosion resistance of the brass material is improved; fe is added and the content is controlled, so that the Fe, Si and Ni can form a compound which is uniformly dispersed in a system, the strength of the brass material is further improved, the heat resistance of the brass material is improved, and in the preparation method of the brass material, the annealing temperature is specifically controlled to be 535+60 xCAlX 100, wherein, CAlThe mass percentage of Al makes the crystal grains of the cast structure of the obtained brass material finer, and the strength of the obtained material is increased.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A high-strength corrosion-resistant brass material comprises the following components in percentage by mass: cu: 64.2%, Si: 1.3%, Fe: 0.13%, Al: 1.69%, Ni: 0.71%, Sn: 0.27%, Nd: 0.07%, Os: 0.02%, Ti: 0.03%, Mn: 1.1%, B: 0.07%, and the balance of Zn and inevitable impurities.
The invention also provides a preparation method of the high-strength corrosion-resistant brass material, which comprises the following steps:
s1, weighing copper powder, pure silicon, iron powder, aluminum powder, nickel powder, tin powder, pure neodymium, pure osmium, titanium powder, copper-manganese intermediate alloy, copper-boron intermediate alloy and zinc powder according to the proportion;
s2, adding the copper powder, the pure silicon, the iron powder, the aluminum powder, the nickel powder, the tin powder, the pure neodymium, the pure osmium, the titanium powder, the copper-manganese intermediate alloy, the copper-boron intermediate alloy and the zinc powder weighed in the S1 into a smelting furnace for melting, then preserving heat at 1170 ℃ for 12min, and obtaining a brass cast ingot after casting;
s3, homogenizing the brass cast ingot, and then carrying out hot rolling, primary cold rolling, annealing and secondary cold rolling to obtain the high-strength corrosion-resistant brass material.
Example 2
A high-strength corrosion-resistant brass material comprises the following components in percentage by mass: cu: 60.9%, Si: 0.91%, Fe: 0.21%, Al: 1.7%, Ni: 1.2%, Sn: 0.12%, Nd: 0.26%, Os: 0.065%, Ti: 0.07%, Mn: 2.25%, B: 0.05%, and the balance of Zn and inevitable impurities.
The invention also provides a preparation method of the high-strength corrosion-resistant brass material, which comprises the following steps:
s1, weighing copper powder, pure silicon, iron powder, aluminum powder, nickel powder, tin powder, pure neodymium, pure osmium, titanium powder, copper-manganese intermediate alloy, copper-boron intermediate alloy and zinc powder according to the proportion;
s2, adding the copper powder, the pure silicon, the iron powder, the aluminum powder, the nickel powder, the tin powder, the pure neodymium, the pure osmium, the titanium powder, the copper-manganese intermediate alloy, the copper-boron intermediate alloy and the zinc powder weighed in the S1 into a smelting furnace to be melted, then preserving the heat at 1250 ℃ for 8min, and obtaining a brass ingot casting after casting, wherein the casting temperature is 1070 ℃;
s3, homogenizing the brass cast ingot, and then carrying out hot rolling, primary cold rolling, annealing and secondary cold rolling to obtain the high-strength corrosion-resistant brass material; wherein the homogenization treatment temperature is 845 ℃ and the time is 80 min; the temperature of the hot rolling is 830 ℃; the annealing time is 150min, and the temperature is 535+60 XCAlX 100, wherein, CAlThe annealing temperature is 535+60 × 1.7% × 100 ═ 637 ℃ in mass percent of Al.
Example 3
A high-strength corrosion-resistant brass material comprises the following components in percentage by mass: cu: 61.2%, Si: 0.85%, Fe: 0.17%, Al: 1.9%, Ni: 1.1%, Sn: 0.11%, Nd: 0.16%, Os: 0.01%, Ti: 0.12%, Mn: 2.21%, B: 0.01%, and the balance of Zn and inevitable impurities.
The invention also provides a preparation method of the high-strength corrosion-resistant brass material, which comprises the following steps:
s1, weighing copper powder, pure silicon, iron powder, aluminum powder, nickel powder, tin powder, pure neodymium, pure osmium, titanium powder, copper-manganese intermediate alloy, copper-boron intermediate alloy and zinc powder according to the proportion;
s2, adding the copper powder, the pure silicon, the iron powder, the aluminum powder, the nickel powder, the tin powder, the pure neodymium, the pure osmium, the titanium powder, the copper-manganese intermediate alloy, the copper-boron intermediate alloy and the zinc powder weighed in the S1 into a smelting furnace to be melted, then preserving the heat at 1180 ℃ for 11min, and obtaining a brass ingot after pouring, wherein the pouring temperature is 980 ℃;
s3, homogenizing the brass cast ingot, and then carrying out hot rolling, primary cold rolling, annealing and secondary cold rolling to obtain the high-strength corrosion-resistant brass material; wherein the homogenization treatment temperature is 830 ℃, and the time is 70 min; the temperature of the hot rolling is 850 ℃; the annealing time is 125min, and the temperature is 649 ℃.
Example 4
A high-strength corrosion-resistant brass material comprises the following components in percentage by mass: cu: 62.6%, Si: 0.85%, Fe: 0.19%, Al: 1.8%, Ni: 1.58%, Sn: 0.16%, Nd: 0.099%, Os: 0.043%, Ti: 0.09%, Mn: 2.12%, B: 0.03 percent, and the balance of Zn and inevitable impurities.
The invention also provides a preparation method of the high-strength corrosion-resistant brass material, which comprises the following steps:
s1, weighing copper powder, pure silicon, iron powder, aluminum powder, nickel powder, tin powder, pure neodymium, pure osmium, titanium powder, copper-manganese intermediate alloy, copper-boron intermediate alloy and zinc powder according to the proportion;
s2, adding the copper powder, the pure silicon, the iron powder, the aluminum powder, the nickel powder, the tin powder, the pure neodymium, the pure osmium, the titanium powder, the copper-manganese intermediate alloy, the copper-boron intermediate alloy and the zinc powder weighed in the S1 into a smelting furnace for melting, then preserving heat at 1200 ℃ for 10min, and obtaining a brass cast ingot after casting, wherein the casting temperature is 1050 ℃;
s3, homogenizing the brass cast ingot, and then carrying out hot rolling, primary cold rolling, annealing and secondary cold rolling to obtain the high-strength corrosion-resistant brass material; wherein the homogenization treatment temperature is 825 deg.C, and the time is 60 min; the temperature of the hot rolling is 840 ℃; the annealing time is 100min, and the temperature is 643 ℃.
The performance of the high-strength corrosion-resistant brass material in the embodiment 1-4 of the invention is tested, wherein the hardness is measured by using a Brinell hardness tester HB-3000, the applied load is 750kg, the diameter of the pressed ball is 5mm, and the pressing time is 15s, and the hardness of the brass material in the embodiment 1-4 is more than or equal to 285 HB; the mechanical property test is carried out on the brass material in the embodiment 1-4 according to GB/T228-; the brass materials in examples 1-4 were subjected to dezincification test according to GB/T10119-2008, and the average dezincification depth was less than 180 μm; the brass materials in examples 1-4 were subjected to a stress corrosion test in which the time for cracks to appear was not less than 1100min and the time for the sample to finally break was not less than 1500min, thus showing that the brass material of the present invention has high hardness and strength and good corrosion resistance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The high-strength corrosion-resistant brass material is characterized by comprising the following components in percentage by mass: cu: 60.9-64.2%, Si: 0.85-1.3%, Fe: 0.13-0.21%, Al: 1.69-1.97%, Ni: 0.71-1.58%, Sn: 0.1-0.27%, Nd: 0.07-0.26%, Os: 0.01-0.065%, Ti: 0.03 to 0.12%, Mn: 1.1-2.25%, B: 0.01-0.07%, and the balance of Zn and inevitable impurities.
2. The high-strength corrosion-resistant brass material according to claim 1, wherein the mass percentages of Mn and Si satisfy the following relationship: 2.47 is less than or equal to CMn/CSiLess than or equal to 2.61, wherein, CMnIs the mass percent of Mn, CSiIs the mass percentage of Si.
3. According to the claimsSolving 1, the high-strength corrosion-resistant brass material is characterized in that the mass percentages of Ni, B and Nd satisfy the following relational expression: cNi≤31×CB+8×CNd+ 0.14%, wherein, CNi、CB、CNdAre respectively the mass percent of Ni, B and Nd.
4. A high strength corrosion resistant brass material in accordance with any one of claims 1-3, wherein the mass percentages of Sn and Ni satisfy the following relation: 2.26 percent to CSn+2×CNiNot more than 3.32 percent and not more than 9.7 percent of CNi/CSnLess than or equal to 10.3, wherein, CNi、CSnAre respectively the mass percent of Ni and Sn.
5. A method for producing a high strength corrosion resistant brass material as claimed in any one of claims 1 to 4, comprising the steps of:
s1, weighing copper powder, pure silicon, iron powder, aluminum powder, nickel powder, tin powder, pure neodymium, pure osmium, titanium powder, copper-manganese intermediate alloy, copper-boron intermediate alloy and zinc powder according to the proportion;
s2, adding the copper powder, the pure silicon, the iron powder, the aluminum powder, the nickel powder, the tin powder, the pure neodymium, the pure osmium, the titanium powder, the copper-manganese intermediate alloy, the copper-boron intermediate alloy and the zinc powder weighed in the S1 into a smelting furnace for melting, then preserving heat for 8-12min at 1170-1250 ℃, and obtaining a brass ingot after casting;
s3, homogenizing the brass cast ingot, and then carrying out hot rolling, primary cold rolling, annealing and secondary cold rolling to obtain the high-strength corrosion-resistant brass material.
6. The method as claimed in claim 5, wherein the casting temperature in S2 is 980-1070 ℃.
7. The method for preparing a high-strength corrosion-resistant brass material as recited in claim 5, wherein the homogenization treatment is performed at 825-845 ℃ for 60-80min in S3.
8. The method for preparing a high-strength corrosion-resistant brass material as recited in claim 5, wherein in S3, the temperature of said hot rolling is 830-850 ℃.
9. The method for preparing a high-strength corrosion-resistant brass material as claimed in any one of claims 5-8, wherein in S3, the annealing time is 100-150min, and the temperature is 535+60 XCAlX 100, wherein, CAlIs the mass percentage of Al.
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Citations (6)
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|---|---|---|---|---|
| JP2004285449A (en) * | 2003-03-24 | 2004-10-14 | Dowa Mining Co Ltd | Copper alloy material and its manufacturing method |
| CN101033516A (en) * | 2006-12-29 | 2007-09-12 | 江苏大学 | Copper-zinc-aluminum shape memory alloy abrasion resistance material and manufacturing method for the same |
| CN101709405A (en) * | 2009-11-03 | 2010-05-19 | 苏州撼力铜合金材料有限公司 | High-intensity wear-resistant complex brass for automotive synchronizing rings |
| CN101928857A (en) * | 2010-07-14 | 2010-12-29 | 南京信息工程大学 | Abrasion-resistant antifriction copper alloy composite material and preparation method thereof |
| JP2012207255A (en) * | 2011-03-29 | 2012-10-25 | Joetsu Bronz1 Corp | Lead-free free-machining bronze alloy for casting |
| CN105925834A (en) * | 2016-05-10 | 2016-09-07 | 安徽九华金润铜业有限公司 | Anti-corrosion copper molybdenum chromium alloy |
-
2019
- 2019-09-27 CN CN201910925211.9A patent/CN110629066B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004285449A (en) * | 2003-03-24 | 2004-10-14 | Dowa Mining Co Ltd | Copper alloy material and its manufacturing method |
| CN101033516A (en) * | 2006-12-29 | 2007-09-12 | 江苏大学 | Copper-zinc-aluminum shape memory alloy abrasion resistance material and manufacturing method for the same |
| CN101709405A (en) * | 2009-11-03 | 2010-05-19 | 苏州撼力铜合金材料有限公司 | High-intensity wear-resistant complex brass for automotive synchronizing rings |
| CN101928857A (en) * | 2010-07-14 | 2010-12-29 | 南京信息工程大学 | Abrasion-resistant antifriction copper alloy composite material and preparation method thereof |
| JP2012207255A (en) * | 2011-03-29 | 2012-10-25 | Joetsu Bronz1 Corp | Lead-free free-machining bronze alloy for casting |
| CN105925834A (en) * | 2016-05-10 | 2016-09-07 | 安徽九华金润铜业有限公司 | Anti-corrosion copper molybdenum chromium alloy |
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