CN104630555A - High-strength corrosion resisting brass material and preparation method thereof - Google Patents
High-strength corrosion resisting brass material and preparation method thereof Download PDFInfo
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- CN104630555A CN104630555A CN201510103346.9A CN201510103346A CN104630555A CN 104630555 A CN104630555 A CN 104630555A CN 201510103346 A CN201510103346 A CN 201510103346A CN 104630555 A CN104630555 A CN 104630555A
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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
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Abstract
The invention relates to a high-strength corrosion resisting brass material and a preparation method thereof. The high-strength corrosion resisting brass material is prepared from the following components in percentage by weight: 55-74% of Cu, 0.02-0.12% of La, 0.01-0.1% of Sb, 0.05-0.15% of Si and the balance of zinc (Zn) and inevitable impurities of which the total amount is not greater than 0.5%. The annealing process comprises a step of keeping the temperature of a test sample for 1-2 hours at 350-550 DEG C and air-cooling subsequently. An ordinary brass material is treated by virtue of the composite function of lanthanum, antimony and silicon, and annealing treatment is further implemented, so that the micro texture of an alloy is remarkably changed, the texture can be purified, the beta phase is relatively fine and small and relatively uniformly distributed, the strength and the plasticity of the alloy material are improved, the alloy material is good in comprehensive mechanical property, the corrosion property of the alloy material is improved, the service life of the alloy material is prolonged, and the alloy material is applicable to manufacturing of sanitary tools, water heating devices, instrument and meter condensation tubes, valves and the like with corrosion resistance requirements.
Description
Technical field
The present invention relates to a kind of compound action of lanthanum, antimony, silicon and anneal of utilizing to improve the market brass strength of materials and corrosion proof processing method, belong to metallic substance and Metal Melting technical field.
Background technology
Brass has excellent mechanical property, solidity to corrosion, conduction and heat conductivility and processing technology, is thus widely used for manufacturing sanitary ware, plumbing, instrument and hydraulic valve etc.But brass in use exists the problem of Dezincification corrosion, and namely zinc element is preferentially corroded and comes off, form loose and porous structure, the serious mechanical property reducing brass, shortens work-ing life, also brings potential safety hazard.For many years in order to suppress the Dezincification corrosion of brass, investigators take many kinds of measures, and wherein, adding alloying element is effective means.Currently used alloying element has arsenic, boron, tin, nickel, rare earth etc.Wherein As is the element be most widely used, but As has severe toxicity, and the volatilization in production, use procedure can damage the health of human body, should avoid future using as far as possible.
In recent years, rare earth element is extensively studied because of the physics and chemistry character of its uniqueness in metal alloy, people have studied and add rare earth metal to improve the Dezincification corrosion performance of brass, have a significant effect, also create favorable influence to the mechanical property of Cu alloy material.How reasonably to utilize the rare earth resources of China with improve brass material erosion resistance, improve its mechanical property there is important research and actual application value.The present invention utilizes the compound action of rare earth, antimony and silicon, and anneal improves mechanical property and the corrosion resisting property of market brass.
Summary of the invention
The object of the present invention is to provide the brass material that high, the anti-Dezincification corrosion performance of a kind of strength plastic is good; Another object of the present invention is to provide the preparation method of above-mentioned brass material.
The present invention is realized by following measures:
A kind of high anti-corrosion brass material of the present invention, is made up of the material of following weight percent: 55% ~ 74% Cu, 0.02% ~ 0.12%La, 0.01% ~ 0.1%Sb, 0.05% ~ 0.15%Si, and all the other are the inevitable impurity that zinc (Zn) and total amount are not more than 0.5%.Annealing process is air cooling after sample is incubated 1 ~ 2 hour at 350 DEG C ~ 550 DEG C.
The solidity to corrosion brass material of the invention described above, the optimal set of described material becomes: 60.5 ~ 63.5%Cu, 0.06%La, 0.02%Sb, 0.08%Si, all the other are the inevitable impurity that zinc (Zn) and total amount are not more than 0.5%, best annealing process be 400 DEG C insulation 1 hour after air cooling.
The invention described above solidity to corrosion brass material is realized by following preparation method, the steps include:
(1) electrolysis copper billet (plate) is put into graphite-clay crucible, use medium-frequency induction furnace heat fused.Before copper is about to fusing, adds glass cullet as insulating covering agent, prevents the oxidation of metallic copper, heat up and be melted to 1100 ~ 1200 DEG C, add the zinc ingot metal block of preheating, stir with carbon-point and zinc is melted completely;
(2) after aluminium alloy continues to be warming up to 1300 ~ 1400 DEG C, add block pure lanthanum, antimony slab and silicon ingot, stir with carbon-point, leave standstill 5 ~ 10 minutes, turn down temperature, aluminium alloy is at about 1200 DEG C castables of coming out of the stove;
(3) sample of castable puts it into temperature again after cooling is be incubated 1 ~ 2 hour in the electric furnace of 350 DEG C ~ 550 DEG C, takes out sample air cooling.
The present invention adds lanthanum, antimony, silicon on the basis of market brass, adopt anneal simultaneously, the microtexture of brass is made to there occurs larger change, dentrite becomes more tiny, the quantity of the comparatively responsive β phase of Dezincification corrosion is also reduced simultaneously, be more evenly distributed, these factors make the anti-Dezincification corrosion performance of material of the present invention increase.Standard anti-Dezincification corrosion experiment display, the weight-loss corrosion speed of brass material of the present invention is significantly less than the weight-loss corrosion speed of existing market brass material.The microtexture of fine uniform makes the intensity of brass material of the present invention and unit elongation be greatly improved, and has excellent comprehensive mechanical property.
In sum, material of the present invention has good comprehensive mechanical property and corrosion resistance nature, is applicable to sanitary ware, plumbing, instrument prolong and the valve etc. that require for manufacturing solidity to corrosion.
Accompanying drawing explanation
The Performance comparision of Fig. 1 embodiment of the present invention and comparative example material.
Embodiment
Embodiment 1
The composition weight proportion (wt%) of invention embodiment material is: 62%Cu, 0.02%La, 0.01%Sb, 0.05%Si, and all the other are Zn and inevitable impurity, and annealing process is air cooling after being incubated 1.2 hours at 350 DEG C.
Following steps are taked to obtain:
(1) copper billet is put into plumbago crucible, use medium-frequency induction furnace heat fused, before copper is about to fusing, adds glass cullet as insulating covering agent, heat up and melt and be superheated to 1150 DEG C, add the spelter of preheating, stir with carbon-point and allow zinc melt completely, be evenly distributed;
(2) continued by aluminium alloy to be warming up to 1330 DEG C, add block pure lanthanum, antimony slab, silicon ingot simultaneously, stir with carbon-point, leave standstill 10 minutes, aluminium alloy is at about 1200 DEG C castables of coming out of the stove;
(3) sample of castable puts it into temperature after cooling is be incubated 1.2 hours in the electric furnace of 350 DEG C, takes out sample air cooling.The performance of gained alloy is in table 1.
Embodiment 2
The composition weight proportion (wt%) of invention embodiment material is: 62%Cu, 0.06%La, 0.02%Sb, 0.08%Si, and all the other are Zn and inevitable impurity, and annealing process is air cooling after being incubated 1 hour at 400 DEG C.
Following steps are taked to obtain:
(1) copper billet is put into plumbago crucible, use medium-frequency induction furnace heat fused, before copper is about to fusing, adds glass cullet as insulating covering agent, heat up and melt and be superheated to 1170 DEG C, add the spelter of preheating, stir with carbon-point and allow zinc melt completely, be evenly distributed;
(2) continued by aluminium alloy to be warming up to 1370 DEG C, add block lanthanum, antimony slab, silicon ingot simultaneously, stir with carbon-point, leave standstill 8 minutes, aluminium alloy is at about 1200 DEG C castables of coming out of the stove;
(3) sample of castable puts it into temperature after cooling is be incubated 1 hour in the electric furnace of 400 DEG C, takes out sample air cooling.The performance of gained alloy is in table 1.
Embodiment 3
The composition weight proportion (wt%) of invention embodiment material is: 62%Cu, 0.1%La, 0.06%Sb, 0.1%Si, and all the other are Zn and inevitable impurity, and annealing process is air cooling after being incubated 1.5 hours at 500 DEG C.
Following steps are taked to obtain:
(1) copper billet is put into plumbago crucible, use medium-frequency induction furnace heat fused, before copper is about to fusing, adds glass cullet as insulating covering agent, heat up and melt and be superheated to 1180 DEG C, add the spelter of preheating, stir with carbon-point and allow zinc melt completely;
(2) aluminium alloy is continued be warming up to 1380 DEG C, adds block lanthanum simultaneously, antimony slab, silicon ingot, with carbon-point stir, leave standstill 10 minutes, aluminium alloy is at about 1200 DEG C castables of coming out of the stove;
(3) sample of castable puts it into temperature after cooling is be incubated 1.5 hours in the electric furnace of 500 DEG C, takes out sample air cooling.The performance of gained alloy is in table 1.
Embodiment 4
The composition weight proportion (wt%) of invention embodiment material is: 70 %Cu, 0.12%La, 0.1%Sb, 0.12%Si, and all the other are Zn and inevitable impurity, and annealing process is air cooling after being incubated 1 hour at 550 DEG C.
Following steps are taked to obtain:
(1) copper billet is put into plumbago crucible, use medium-frequency induction furnace heat fused, before copper is about to fusing, adds glass cullet as insulating covering agent, heat up and melt and be superheated to 1170 DEG C, add the spelter of preheating, stir with carbon-point and allow zinc melt completely;
(2) continued by aluminium alloy to be warming up to 1370 DEG C, add block lanthanum, antimony slab, silicon ingot simultaneously, stir with carbon-point, leave standstill 8 minutes, aluminium alloy is at about 1200 DEG C castables of coming out of the stove;
(3) sample of castable puts it into temperature after cooling is be incubated 1 hour in the electric furnace of 550 DEG C, takes out sample air cooling.The performance of gained alloy is in table 1.
Embodiment 5
The composition weight proportion (wt%) of invention embodiment material is: 62%Cu, 0.06%La, 0.02%Sb, 0.08%Si, and all the other are Zn and inevitable impurity, and annealing process is air cooling after being incubated 1 hour at 450 DEG C.
Following steps are taked to obtain:
(1) copper billet is put into plumbago crucible, use medium-frequency induction furnace heat fused, before copper is about to fusing, adds glass cullet as insulating covering agent, heat up and melt and be superheated to 1170 DEG C, add the spelter of preheating, stir with carbon-point and allow zinc melt completely, be evenly distributed;
(2) continued by aluminium alloy to be warming up to 1370 DEG C, add block lanthanum, antimony slab, silicon ingot simultaneously, stir with carbon-point, leave standstill 8 minutes, aluminium alloy is at about 1200 DEG C castables of coming out of the stove;
(3) sample of castable puts it into temperature after cooling is be incubated 1 hour in the electric furnace of 450 DEG C, takes out sample air cooling.The performance of gained alloy is in table 1.
Choose the H62 copper alloy close with embodiment alloy constituent element as a comparison case 1, its moiety is: 62%Cu, and all the other are Zn and inevitable impurity, and annealing process is at 400 DEG C of insulations air cooling after 1 hour.Each performance comparison result of comparative example 1 and embodiment is as shown in table 1.Result shows, the Dezincification corrosion resistant of alloy ratio H62 copper alloy of the present invention obviously promotes, and wherein the weight-loss corrosion speed of embodiment 2 is minimum, drops to 17.35 gm
-2h
-1, reduce 63.6%.The mechanical property of embodiment has and changes in various degree, and wherein the comprehensive mechanical property of embodiment 2 is best, compared with H62 copper alloy, its unit elongation rises to 42.6%, and improve 9.8 %, hardness improves 10.4%, tensile strength improves 5.6%, and yield strength improves 8.1%.
As seen from table, compare between embodiment 1 ~ 5, the change of alloying element content can cause obvious impact to the performance of material, although the content of lanthanum, antimony, silicon is too low or the too much performance that to a certain degree can improve alloy material, can not play best effect.
Claims (4)
1. a corrosion-resistant brass material, it is characterized in that being made up of the material of following weight proportion: 55% ~ 74% Cu, 0.02% ~ 0.12%La, 0.01% ~ 0.1%Sb, 0.05% ~ 0.15%Si, all the other are the inevitable impurity that zinc (Zn) and total amount are not more than 0.5%, and annealing process is air cooling after sample is incubated 1 ~ 2 hour at 350 DEG C ~ 550 DEG C.
2. brass material according to claim 1, the most preferred group of described material becomes: 60.5 ~ 63.5% Cu, 0.06%La, 0.02%Sb, 0.08%Si, all the other are the inevitable impurity that zinc (Zn) and total amount are not more than 0.5%, best annealing process be 400 DEG C insulation 1 hour after air cooling.
3. a preparation method for matrix material described in claim 1, is characterized in that adopting following steps:
(1) electrolysis copper billet (plate) is put into graphite-clay crucible, use medium-frequency induction furnace heat fused, before copper is about to fusing, adds glass cullet as insulating covering agent, prevent the oxidation of metallic copper, intensification is melted to 1100 ~ 1200 DEG C, adds the zinc ingot metal block of preheating, stirs zinc is melted completely with carbon-point;
(2) after aluminium alloy continues to be warming up to 1300 ~ 1400 DEG C, add block pure lanthanum, antimony slab, silicon ingot, stir with carbon-point, leave standstill 5 ~ 10 minutes, turn down temperature, aluminium alloy is at about 1200 DEG C castables of coming out of the stove;
(3) sample of castable puts it into temperature again after cooling is be incubated 1 ~ 2 hour in the electric furnace of 350 DEG C ~ 550 DEG C, takes out sample air cooling.
4. preparation method according to claim 3, is characterized in that: in step (3), and aluminium alloy adds block pure lanthanum, antimony slab, silicon ingot 1300 ~ 1400 DEG C time simultaneously, and add latter standing 5 ~ 10 minutes, aluminium alloy is at about 1200 DEG C castables.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510103346.9A CN104630555A (en) | 2015-03-10 | 2015-03-10 | High-strength corrosion resisting brass material and preparation method thereof |
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| CN201510103346.9A CN104630555A (en) | 2015-03-10 | 2015-03-10 | High-strength corrosion resisting brass material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399746A (en) * | 2016-07-04 | 2017-02-15 | 济南大学 | High-strength corrosion-resistant brass material and preparation and application thereof |
| CN109055808A (en) * | 2018-10-26 | 2018-12-21 | 浙江星康铜业有限公司 | A kind of ormolu |
| CN109468488A (en) * | 2018-12-24 | 2019-03-15 | 广州海鸥住宅工业股份有限公司 | Low lead Anti-dezincificationyellow yellow brass alloy and preparation method thereof |
| CN113061777A (en) * | 2021-03-25 | 2021-07-02 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
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| JPS5295531A (en) * | 1976-02-06 | 1977-08-11 | Olin Corp | Precipitation hardened spinodal copper based alloy and method of obtaining it |
| JPS61183426A (en) * | 1985-02-06 | 1986-08-16 | Furukawa Electric Co Ltd:The | High strength, highly conductive heat resisting copper alloy |
| US5330712A (en) * | 1993-04-22 | 1994-07-19 | Federalloy, Inc. | Copper-bismuth alloys |
| JP2002012927A (en) * | 2000-06-30 | 2002-01-15 | Dowa Mining Co Ltd | Cupper based alloy having dezincfication resistive property |
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| CN102776409A (en) * | 2012-08-24 | 2012-11-14 | 李伟 | Technology for preparing corrosion-resistant copper alloy |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5295531A (en) * | 1976-02-06 | 1977-08-11 | Olin Corp | Precipitation hardened spinodal copper based alloy and method of obtaining it |
| JPS61183426A (en) * | 1985-02-06 | 1986-08-16 | Furukawa Electric Co Ltd:The | High strength, highly conductive heat resisting copper alloy |
| US5330712A (en) * | 1993-04-22 | 1994-07-19 | Federalloy, Inc. | Copper-bismuth alloys |
| JP2002012927A (en) * | 2000-06-30 | 2002-01-15 | Dowa Mining Co Ltd | Cupper based alloy having dezincfication resistive property |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399746A (en) * | 2016-07-04 | 2017-02-15 | 济南大学 | High-strength corrosion-resistant brass material and preparation and application thereof |
| CN109055808A (en) * | 2018-10-26 | 2018-12-21 | 浙江星康铜业有限公司 | A kind of ormolu |
| CN109468488A (en) * | 2018-12-24 | 2019-03-15 | 广州海鸥住宅工业股份有限公司 | Low lead Anti-dezincificationyellow yellow brass alloy and preparation method thereof |
| CN113061777A (en) * | 2021-03-25 | 2021-07-02 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
| CN113061777B (en) * | 2021-03-25 | 2022-01-28 | 上海五星铜业股份有限公司 | Brass alloy and preparation method thereof |
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Application publication date: 20150520 |