CN106282656A - A kind of environment-friendly type lead-free Cutting free cerium brass alloys and the preparation method of ingot casting thereof - Google Patents
A kind of environment-friendly type lead-free Cutting free cerium brass alloys and the preparation method of ingot casting thereof Download PDFInfo
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- CN106282656A CN106282656A CN201510365785.7A CN201510365785A CN106282656A CN 106282656 A CN106282656 A CN 106282656A CN 201510365785 A CN201510365785 A CN 201510365785A CN 106282656 A CN106282656 A CN 106282656A
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Abstract
The invention discloses a kind of environment-friendly type lead-free Cutting free cerium brass alloys and the preparation method of ingot casting thereof, the composition of each component is respectively as follows: copper 63.5%～68% by weight percentage, selenium 0.2%～0.5%, cerium-rich mischmetal 0.01%～0.015%, ferrum is not higher than 0.1%, total amount is not more than the impurity of 0.5%, and surplus is zinc.The environment-friendly type lead-free Cutting free cerium brass alloys of the present invention, produce a kind of environmental-friendly lead-free cerium brass material being entirely capable of substituting ledrite；Product has higher tensile strength, excellent thermoforming performance, excellent resistance to dezincification performance and anticorrosion stress-resistant performance, and the prominent safe and sanitary performance also with extremely excellence and cutting ability, its manufacturing process simplicity, low cost, easy to be recycled simultaneously, favourable ecological, environmental protective and human health；And preparation technology is simple, production procedure is convenient, and the product of production has good cutting ability, hot and cold processing characteristics, mechanical property, has again good anti dezincification character energy and anti-stress corrosion performance.
Description
Technical field
The present invention relates to a kind of environment-friendly type lead-free Cutting free cerium brass alloys, the invention still further relates to the preparation method of a kind of ingot casting utilizing environment-friendly type lead-free Cutting free cerium brass alloys to produce, belong to metal material and manufacture field thereof.
Background technology
Pyrite is the alloy of copper and zinc.Simplest pyrite is copper zinc bianry alloy, the simplest pyrite or basis brass.The content changing zinc in brass can obtain the pyrite of different mechanical performance.The content of zinc in brass is the highest, and its intensity also improves, and plasticity reduces.In order to improve certain performance of pyrite, generally in simple pyrite, addition lead improves the performances such as machinability and the wearability of pyrite.But lead is human body cell " killer ", huge to harm, pyrite European Union the to be complied fully with ROHS instruction in USA and EU clear stipulaties imported product and WEEE command request, and the non-ferrous metal regulation of California, USA AB1953 bill can be met.Along with improving constantly of Chinese people's living standard and quality, lead-free reflow also will necessarily replace ledrite completely.And pyrite is widely used in the industries such as medical device part, IT communication component, cable television parts, electronic apparatus adapter, connector, screw, purifier parts, valve, five metals device, clothing, slide fastener.For meeting this market demand, pyrite manufacturing enterprise develops the lead-free reflow product substituting lead one after another, such as China Patent No. is 200910044086.7 to disclose a kind of sintered leadless free-cutting brass and preparation method thereof, and in pyrite, the mass fraction of each element is respectively as follows: copper 48.0%-70.0%, aluminum 0.3%-0.4%, magnesium 4.0%-4.3%, manganese 0.1%-0.2%, cerium 0.08%-0.11%, lanthanum 0.01%-0.03%, BN powder 0.4%-2.4%, remaining is the impurity that zinc and total amount are not more than 0.05%.In this technical scheme the most leaded in brass alloys composition, environmentally friendly, but complicated component in alloy, cutting effect is the best.
Summary of the invention
Present invention aims to deficiency of the prior art, it is provided that a kind of environment-friendly type lead-free Cutting free cerium brass alloys and the preparation method of ingot casting thereof, produce a kind of environmental-friendly lead-free cerium brass material being entirely capable of substituting ledrite；Product has higher tensile strength, excellent thermoforming performance, excellent resistance to dezincification performance and anticorrosion stress-resistant performance.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of environment-friendly type lead-free Cutting free cerium brass alloys, its innovative point is: the composition of each component is respectively as follows: copper 63.5%～68% by weight percentage, selenium 0.2%～0.5%, cerium-rich mischmetal 0.01%～0.015%, ferrum is not higher than 0.1%, and total amount is not more than the impurity of 0.5%, and surplus is zinc.
On this basis, the composition of each component is respectively as follows: copper 65.5%～66%, selenium 0.28%～0.35%, cerium-rich mischmetal 0.012%～0.013% by weight percentage, and ferrum is not higher than 0.1%, and total amount is not more than the impurity of 0.5%, and surplus is zinc.
On this basis, described cerium-rich mischmetal includes the mixture of Ce elements and rare earth element, and both mixed proportions are 1:0.6 ~ 1.6.
It is a further object to provide a kind of preparation method utilizing environment-friendly type lead-free Cutting free cerium brass alloys to produce ingot casting, its innovative point is: specifically include following steps:
S1: dispensing: the composition of its each component is respectively as follows: copper 63.5%～68%, selenium 0.2%～0.5%, cerium-rich mischmetal 0.01%～0.015% by weight percentage, ferrum is not higher than 0.1%, total amount is not more than the impurity of 0.5%, and surplus is zinc, carries out precise dispensing；
S2: melting:
1), 1# electrolytic copper plate is cut into the copper bar of 200mm × 1200mm, 1# zinc ingot metal is broken into the fragment of 200 × 200；
2), each component raw material prepared is put into smelting furnace and carry out melting, its charging sequence and method are as follows: the Linesless charcoal being slowly added into copper coin and the covering prepared in smelting furnace melts, fusion temperature is 1090 DEG C-1150 DEG C, to be melted complete after be incubated 5 minutes and fully deoxidation, zinc ingot metal is put in copper liquid and melt, keep copper liquid temperature 1100 DEG C-1130 DEG C, time is 10-12 minute, it is separately added into selenium and cerium-rich mischmetal again, keeps this alloy temperature and be sufficiently stirred for 10 minutes making each component uniform；Pouring in holding furnace by fusing alloyed copper liquid after good, holding furnace temperature is maintained at 1000 DEG C-1050 DEG C；
S3, ingot casting: utilize the mode of horizontal casting that copper liquid is drawn into the copper ingot of needs, concrete operation step order is: send primary cooling water, successively put copper liquid, send lubricating oil, start dummy ingot, send secondary cooling water, normal draw, sawing；
S4, preheating: put in continuous-type furnace by the copper ingot that sawing is good and heat, make copper ingot reach temperature 650 DEG C-720 DEG C；
S5, hot extrusion: utilize copper material heat extruder that copper ingot is extruded, extruding force 891t, extrusion speed 5-38mm/s, extrusion ratio 6-78；
S6, pickling: being put into by the brass bar after extruding and carry out soak acid-cleaning in pickling tube, pickle is dilute sulfuric acid, and pickling time is 20-30 minute, is then carried out copper rod；
S7, drawing raise are straight: utilize automatic assembly line copper rod to carry out drawing, aligns, cut off and subpackage.
On this basis, the concentration of dilute sulfuric acid used in described step 4 is 8%-22%.
Beneficial effects of the present invention is as follows:
(1) the environment-friendly type lead-free Cutting free cerium brass alloys of the present invention, produce a kind of environmental-friendly lead-free cerium brass material being entirely capable of substituting ledrite；Product has higher tensile strength, excellent thermoforming performance, excellent resistance to dezincification performance and anticorrosion stress-resistant performance, and the prominent safe and sanitary performance also with extremely excellence and cutting ability, its manufacturing process simplicity, low cost, easy to be recycled simultaneously, favourable ecological, environmental protective and human health.
(2) the environment-friendly type lead-free Cutting free cerium brass alloys of the present invention, raw material relates to few, and raw material sources are extensive, meet China and the European and American developed countries developing direction to environmentally friendly Cu alloy material；
(3) the environment-friendly type lead-free Cutting free cerium brass alloys of the present invention, the abundant advantage of China's rare earth resources can be made full use of and produce Cutting free processing, electric conductivity and plasticity preferable lead-free reflow material, and preparation technology is simple, production procedure is convenient, the product produced has good cutting ability, hot and cold processing characteristics, mechanical property, there are again good anti dezincification character energy and anti-stress corrosion performance.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is elaborated.
Embodiment 1
A kind of environment-friendly type lead-free Cutting free cerium brass alloys, the composition of each component is respectively as follows: copper 63.5%, selenium 0.2%, cerium-rich mischmetal 0.01%, ferrum 0.09%, total impurities 0.48% by weight percentage, and surplus is zinc.
Wherein, cerium-rich mischmetal includes the mixture of Ce elements and rare earth element, and both mixed proportions are 1:0.6.
Utilize above this environment-friendly type lead-free Cutting free cerium brass alloys to produce the preparation method of ingot casting, specifically include following steps:
S1: dispensing: being respectively as follows: copper 63.5%, selenium 0.2%, cerium-rich mischmetal 0.01%, ferrum 0.09%, total impurities 0.48% by weight percentage according to the composition of each component, surplus is zinc, carries out precise dispensing；
S2: melting:
1), 1# electrolytic copper plate is cut into the copper bar of 200mm × 1200mm, 1# zinc ingot metal is broken into the fragment of 200 × 200；
2), each component raw material prepared is put into smelting furnace and carry out melting, its charging sequence and method are as follows: the Linesless charcoal being slowly added into copper coin and the covering prepared in smelting furnace melts, fusion temperature is 1090 DEG C, to be melted complete after be incubated 5 minutes and fully deoxidation, being put into by zinc ingot metal in copper liquid and melt, keep copper liquid temperature 1100 DEG C, the time is 10 minutes, it is separately added into selenium and cerium-rich mischmetal again, keeps this alloy temperature and be sufficiently stirred for 10 minutes making each component uniform；Pouring in holding furnace by fusing alloyed copper liquid after good, holding furnace temperature is maintained at 1000 DEG C；
S3, ingot casting: utilize the mode of horizontal casting that copper liquid is drawn into the copper ingot of needs, concrete operation step order is: send primary cooling water, successively put copper liquid, send lubricating oil, start dummy ingot, send secondary cooling water, normal draw, sawing；
S4, preheating: put in continuous-type furnace by the copper ingot that sawing is good and heat, make copper ingot reach temperature 650 DEG C；
S5, hot extrusion: utilize copper material heat extruder that copper ingot is extruded, extruding force 891t, extrusion speed 5mm/s, extrusion ratio 6；
S6, pickling: being put into by the brass bar after extruding and carry out soak acid-cleaning in pickling tube, pickle is dilute sulfuric acid, and pickling time is 20 minutes, is then carried out copper rod；
S7, drawing raise are straight: utilize automatic assembly line copper rod to carry out drawing, aligns, cut off and subpackage.
Wherein, the concentration of dilute sulfuric acid used in step 4 is 8%.
Embodiment 2
A kind of environment-friendly type lead-free Cutting free cerium brass alloys, the composition of each component is respectively as follows: copper 65.7%, selenium 0.32%, cerium-rich mischmetal 0.012%, ferrum 0.03%, total impurities 0.2% by weight percentage, and surplus is zinc.
Wherein, cerium-rich mischmetal includes the mixture of Ce elements and rare earth element, and both mixed proportions are 1:1.6.
Utilize above this environment-friendly type lead-free Cutting free cerium brass alloys to produce the preparation method of ingot casting, specifically include following steps:
S1: dispensing: being respectively as follows: copper 65.7%, selenium 0.32%, cerium-rich mischmetal 0.012%, ferrum 0.03%, total impurities 0.2% by weight percentage according to the composition of each component, surplus is zinc, carries out precise dispensing；
S2: melting:
1), 1# electrolytic copper plate is cut into the copper bar of 200mm × 1200mm, 1# zinc ingot metal is broken into the fragment of 200 × 200；
2), each component raw material prepared is put into smelting furnace and carry out melting, its charging sequence and method are as follows: the Linesless charcoal being slowly added into copper coin and the covering prepared in smelting furnace melts, fusion temperature is 1150 DEG C, to be melted complete after be incubated 5 minutes and fully deoxidation, being put into by zinc ingot metal in copper liquid and melt, keep copper liquid temperature 1130 DEG C, the time is 12 minutes, it is separately added into selenium and cerium-rich mischmetal again, keeps this alloy temperature and be sufficiently stirred for 10 minutes making each component uniform；Pouring in holding furnace by fusing alloyed copper liquid after good, holding furnace temperature is maintained at 1050 DEG C；
S3, ingot casting: utilize the mode of horizontal casting that copper liquid is drawn into the copper ingot of needs, concrete operation step order is: send primary cooling water, successively put copper liquid, send lubricating oil, start dummy ingot, send secondary cooling water, normal draw, sawing；
S4, preheating: put in continuous-type furnace by the copper ingot that sawing is good and heat, make copper ingot reach temperature 720 DEG C；
S5, hot extrusion: utilize copper material heat extruder that copper ingot is extruded, extruding force 891t, extrusion speed 38mm/s, extrusion ratio 78；
S6, pickling: being put into by the brass bar after extruding and carry out soak acid-cleaning in pickling tube, pickle is dilute sulfuric acid, and pickling time is 30 minutes, is then carried out copper rod；
S7, drawing raise are straight: utilize automatic assembly line copper rod to carry out drawing, aligns, cut off and subpackage.
Wherein, the concentration of dilute sulfuric acid used in step 4 is 22%.
Embodiment 3
A kind of environment-friendly type lead-free Cutting free cerium brass alloys, the composition of each component is respectively as follows: copper 68%, selenium 0.5%, cerium-rich mischmetal 0.015%, ferrum 0.06%, total impurities 0.3% by weight percentage, and surplus is zinc.
Wherein, cerium-rich mischmetal includes the mixture of Ce elements and rare earth element, and both mixed proportions are 1:1.1.
Utilize above this environment-friendly type lead-free Cutting free cerium brass alloys to produce the preparation method of ingot casting, specifically include following steps:
S1: dispensing: being respectively as follows: copper 68%, selenium 0.5%, cerium-rich mischmetal 0.015%, ferrum 0.06%, total impurities 0.3% by weight percentage according to the composition of each component, surplus is that zinc carries out precise dispensing；
S2: melting:
1), 1# electrolytic copper plate is cut into the copper bar of 200mm × 1200mm, 1# zinc ingot metal is broken into the fragment of 200 × 200；
2), each component raw material prepared is put into smelting furnace and carry out melting, its charging sequence and method are as follows: the Linesless charcoal being slowly added into copper coin and the covering prepared in smelting furnace melts, fusion temperature is 1110 DEG C, to be melted complete after be incubated 5 minutes and fully deoxidation, being put into by zinc ingot metal in copper liquid and melt, keep copper liquid temperature 1120 DEG C, the time is 11 minutes, it is separately added into selenium and cerium-rich mischmetal again, keeps this alloy temperature and be sufficiently stirred for 10 minutes making each component uniform；Pouring in holding furnace by fusing alloyed copper liquid after good, holding furnace temperature is maintained at 1020 DEG C；
S3, ingot casting: utilize the mode of horizontal casting that copper liquid is drawn into the copper ingot of needs, concrete operation step order is: send primary cooling water, successively put copper liquid, send lubricating oil, start dummy ingot, send secondary cooling water, normal draw, sawing；
S4, preheating: put in continuous-type furnace by the copper ingot that sawing is good and heat, make copper ingot reach temperature 700 DEG C；
S5, hot extrusion: utilize copper material heat extruder that copper ingot is extruded, extruding force 891t, extrusion speed 22mm/s, extrusion ratio 66；
S6, pickling: being put into by the brass bar after extruding and carry out soak acid-cleaning in pickling tube, pickle is dilute sulfuric acid, and pickling time is 25 minutes, is then carried out copper rod；
S7, drawing raise are straight: utilize automatic assembly line copper rod to carry out drawing, aligns, cut off and subpackage.
Wherein, the concentration of dilute sulfuric acid used in step 4 is 16%.
[0024]
The ingot chemistry testing result of the environmental protection cerium brass alloys of above example 1～3 preparation after step 1～3 is as shown in table 1:
The ingot casting of the preparation after environmental protection cerium brass alloys step 1～3, after the techniques such as step 4～the hot extrusion of 7, drawing and annealing, aligning, is processed intoS28mm × 28mm × 2.5, mechanical property and the cutting ability of 36mm × 2m (hexagonal) (being all half-hard state) are as shown in table 2:
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (5)
1. environment-friendly type lead-free Cutting free cerium brass alloys, it is characterized in that: the composition of each component is respectively as follows: copper 63.5%～68% by weight percentage, selenium 0.2%～0.5%, cerium-rich mischmetal 0.01%～0.015%, ferrum is not higher than 0.1%, total amount is not more than the impurity of 0.5%, and surplus is zinc.
Environment-friendly type lead-free Cutting free cerium brass alloys the most according to claim 1, it is characterized in that: the composition of each component is respectively as follows: copper 65.5%～66% by weight percentage, selenium 0.28%～0.35%, cerium-rich mischmetal 0.012%～0.013%, ferrum is not higher than 0.1%, total amount is not more than the impurity of 0.5%, and surplus is zinc.
Environment-friendly type lead-free Cutting free cerium brass alloys the most according to claim 1 and 2, it is characterised in that: described cerium-rich mischmetal includes the mixture of Ce elements and rare earth element, and both mixed proportions are 1:0.6 ~ 1.6.
4. one kind utilizes described in claim 1 environment-friendly type lead-free Cutting free cerium brass alloys produce the preparation method of ingot casting, it is characterised in that: specifically include following steps:
S1: dispensing: the composition of its each component is respectively as follows: copper 63.5%～68%, selenium 0.2%～0.5%, cerium-rich mischmetal 0.01%～0.015% by weight percentage, ferrum is not higher than 0.1%, total amount is not more than the impurity of 0.5%, and surplus is zinc, carries out precise dispensing；
S2: melting:
1), 1# electrolytic copper plate is cut into the copper bar of 200mm × 1200mm, 1# zinc ingot metal is broken into the fragment of 200 × 200；
2), each component raw material prepared is put into smelting furnace and carry out melting, its charging sequence and method are as follows: the Linesless charcoal being slowly added into copper coin and the covering prepared in smelting furnace melts, fusion temperature is 1090 DEG C-1150 DEG C, to be melted complete after be incubated 5 minutes and fully deoxidation, zinc ingot metal is put in copper liquid and melt, keep copper liquid temperature 1100 DEG C-1130 DEG C, time is 10-12 minute, it is separately added into selenium and cerium-rich mischmetal again, keeps this alloy temperature and be sufficiently stirred for 10 minutes making each component uniform；Pouring in holding furnace by fusing alloyed copper liquid after good, holding furnace temperature is maintained at 1000 DEG C-1050 DEG C；
S3, ingot casting: utilize the mode of horizontal casting that copper liquid is drawn into the copper ingot of needs, concrete operation step order is: send primary cooling water, successively put copper liquid, send lubricating oil, start dummy ingot, send secondary cooling water, normal draw, sawing；
S4, preheating: put in continuous-type furnace by the copper ingot that sawing is good and heat, make copper ingot reach temperature 650 DEG C-720 DEG C；
S5, hot extrusion: utilize copper material heat extruder that copper ingot is extruded, extruding force 891t, extrusion speed 5-38mm/s, extrusion ratio 6-78；
S6, pickling: being put into by the brass bar after extruding and carry out soak acid-cleaning in pickling tube, pickle is dilute sulfuric acid, and pickling time is 20-30 minute, is then carried out copper rod；
S7, drawing raise are straight: utilize automatic assembly line copper rod to carry out drawing, aligns, cut off and subpackage.
The preparation method of environment-friendly type lead-free Cutting free cerium brass alloys the most according to claim 4, it is characterised in that: the concentration of dilute sulfuric acid used in described step 4 is 8%-22%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117734A (en) * | 2019-06-10 | 2019-08-13 | 瑞安市强达不锈钢标准件有限公司 | A kind of processing technology of bolt |
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| JP2000129375A (en) * | 1998-08-18 | 2000-05-09 | Kitz Corp | Bronze alloy |
| KR20020008709A (en) * | 2000-07-25 | 2002-01-31 | 황해웅 | Cu-zn-ce, la, nd, pr alloys for edm(energy discharge machine) wire and its manufacturing method |
| CN103074515A (en) * | 2013-02-19 | 2013-05-01 | 四川鑫炬矿业资源开发股份有限公司 | Novel high-conductivity free-cutting selenium copper alloy material and preparation method thereof |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000129375A (en) * | 1998-08-18 | 2000-05-09 | Kitz Corp | Bronze alloy |
| KR20020008709A (en) * | 2000-07-25 | 2002-01-31 | 황해웅 | Cu-zn-ce, la, nd, pr alloys for edm(energy discharge machine) wire and its manufacturing method |
| CN103074515A (en) * | 2013-02-19 | 2013-05-01 | 四川鑫炬矿业资源开发股份有限公司 | Novel high-conductivity free-cutting selenium copper alloy material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117734A (en) * | 2019-06-10 | 2019-08-13 | 瑞安市强达不锈钢标准件有限公司 | A kind of processing technology of bolt |
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