CN108330319A - A kind of zinc release resistant low-lead brass and its manufacturing method - Google Patents
A kind of zinc release resistant low-lead brass and its manufacturing method Download PDFInfo
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- CN108330319A CN108330319A CN201810077247.1A CN201810077247A CN108330319A CN 108330319 A CN108330319 A CN 108330319A CN 201810077247 A CN201810077247 A CN 201810077247A CN 108330319 A CN108330319 A CN 108330319A
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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
- C22C—ALLOYS
- C22C3/00—Removing material from alloys to produce alloys of different constitution separation of the constituents of alloys
- C22C3/005—Separation of the constituents of alloys
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Abstract
The invention discloses a kind of zinc release resistant low-lead brass and its manufacturing methods, the zinc release resistant low-lead brass is raw material with HPb66 05, only contain the lead for accounting for 0.05% 0.08% mass ratioes in final products, copper, the impurity of 65.5% 68.4% mass ratioes are not higher than 0.25%, surplus is zinc.The zinc release resistant low-lead brass good economy performance of the present invention, zinc damage is low, lead loss is high, material property keeps complete, compactness is good, degree of purity is high.
Description
Technical field
The present invention relates to copper material smelting processing field more particularly to a kind of zinc release resistant low-lead brass and its manufacturing methods.
Background technology
The alloy that brass is made of copper and zinc, the brass being made of copper, zinc is just called basis brass, if it is by two
Kind or more element composition a variety of alloys be known as special brass.Brass has stronger wear-resisting property, brass to be commonly used for making
Make valve, water pipe, air-conditioning connection pipe for internal-external unit and radiator etc..
In the prior art, in order to enhance the cutting ability and wear-resisting property of brass, most directly effective method is exactly people
Lead is added wherein, but the raising required with the development of the times with Environmental protection, the use of lead are greatly limited,
It is even more especially stringent control in civilian arts, it is well known that being used and the most wide Huang of application range as in copper alloy
Copper, if not adding suitable lead, the problems such as easily occurring to glue knife in machine cut process, even if processing as possible
Product, surface roughness is also very high（The H80 without cold-rolling treatment is surveyed, even if being carried out using the extremely low depth of cut accurate
Processing also just only has Ra1.6, far can not realize the precision machined demand of product in the case that surface roughness is best）, and
Civil goods requires the exquisite degree of appearance now equally very high.Further aspect is that although do not use lead also can use manganese, aluminium,
The elements such as silicon obtain better intensity and machinability after being changed to the composition of simple brass, but when applied to civilian goods
When field, the cost of raw material and metallurgical cost will be a very big problems, and well-known is exactly that alloying element content is got over
More, smelting is more difficult, and cost is higher.
Therefore, be badly in need of on the market a kind of good economy performance, zinc damage is low, lead loss is high, material property keep completely, compactness it is good,
The high brass of degree of purity and its manufacturing method.
Invention content
In view of the above defects of the prior art, the present invention is intended to provide a kind of good economy performance, zinc damage low, lead loss
The zinc release resistant low-lead brass and its manufacturing method that high, material property keeps complete, compactness is good, degree of purity is high.
To achieve the goals above, the present invention uses following technical scheme：A kind of manufacturing method of zinc release resistant low-lead brass,
Include the following steps：
1）Prepare before production
1. raw material preparation：Prepare ledrite HPb66-05 raw material, prepare enough glass puttys；
2. equipment and tooling prepare：Preparation is built-in with air flue and graphite agitating device and the vacuum electroslag remelting of melting kettle is set
Centrifugal separation equipment, special atmosphere oven, vacuum hot isostatic apparatus standby, connect with crucible；
2）Raw material are smelted
1. by the stage 1）1. glass putty that step prepares is sprayed on the stage 1）Crucible in 2. vacuum electroslag remelting equipment that step prepares
Inner surface to thickness 1.5mm-2mm, obtain for use crucible；
2. by the stage 1）1. ledrite HPb66-05 raw material that step prepares are put into 1. for use crucible that step prepares, are taken out true
Sky is to vacuum degree 1 × 10-3-1×10-4, then heat to ledrite HPb66-05 raw material and be completely melt, obtain molten bath；
3. open centrifugal separation equipment, and with the rate of 800rpm-1000rpm carry out rotating centrifugal separation, to speed after continue five
Minute, outer layer molten bath composition is then detached, two layers of internal layer molten bath is retained；
4. opening graphite agitating device, 3. internal layer molten bath that step obtains is stirred with the rate of 50rpm-60rpm, is continued
15min-20min obtains purifying molten bath；
5. by the stage 1）2. special atmosphere oven that step prepares is preheated to 370 DEG C -380 DEG C；
6. 4. purifying molten bath that step obtains is transferred in the special atmosphere oven after 5. preheating that step obtains, temperature is kept
370 DEG C -380 DEG C, continue 3h-4h, detach liquid, retain solid, obtains purifying base；
7. 6. purifying base that step is obtained uses the stage 1）2. vacuum hot isostatic apparatus that step prepares is with 320 DEG C -350 DEG C
Temperature, the pressure treatment 1h-1.5h of 100MPa-120MPa, that is, obtain needed for zinc release resistant low-lead brass.
The zinc release resistant low-lead brass manufactured using the above method is only contained using HPb66-05 as raw material, in final products and is accounted for
The lead of 0.05%-0.08% mass ratioes, the copper of 65.5%-68.4% mass ratioes, impurity are not higher than 0.25%, and surplus is zinc.
With existing Technical comparing, the present invention as the above scheme is adopted, has the following advantages：（1）Different from the prior art
Mainly improve the mechanical performance and machinability of brass by adding lead, the present invention is by lose at lead Winn bronze
It manages and directly obtains the high brass of lead loss, it is worth noting that due to not being the simple hot mistake method that will be readily apparent using routine
（By higher than lead fusing point, less than the Temperature Treatment of zinc fusing point, so that lead liquefaction in part is precipitated, this method can only reduce copper alloy
The lead on surface, first, be easy to causeing, material is uneven, second is that also can not damage of the essentially decreased lead to environment）, but utilize
Soluble solids and lead, tin are heavy metal to lead each other and density is centrifuged much larger than the principle of copper and zinc with tin, utilize tin
Lead is isolated in except copper, zinc solid solution（Tin density is less than lead but higher than copper, zinc）And tin and work as solvent are shot off simultaneously
For the lead of solute, the required zinc release resistant low-lead brass of the present invention is obtained.It (is only completed if this step in actually copper zinc solid solution
Lead content still have about 0.08%-0.13%, the standard of low lead bronze is not achieved).（2）The present invention is cooled down further through isothermal（Higher than lead
The temperature of fusing point but the setting temperature for being less than zinc, copper）, on the one hand ensure that the uniformity of zinc solid solution in copper, on the other hand
Further reduce lead（Due to lead density is high and in copper almost without solid solubility, when everybody is liquefaction, liquid
Lead extrusion is precipitated easily from copper and flows, but the problem of bringing is that the consistency of copper solid solution is caused to slightly decrease, after this is mainly
Mended after the solidification of phase most copper zinc solid solution it is about reduced not enough caused by, degree is smaller, it is little to be influenced on performance）, complete this
The content of lead is reduced to required 0.05%-0.08% mass ratioes in copper alloy after step.（3）It is thorough by rational hot isostatic pressing mode
Bottom is eliminated declines problem since scorification goes out caused consistency, and it is low to obtain the zinc release resistant that consistency is high, degree of purity is high, has excellent performance
Ledrite.
Specific implementation mode
Embodiment 1：
A kind of zinc release resistant low-lead brass, using HPb66-05 as raw material, in final products only contain account for 0.08% mass ratio lead,
Copper, the impurity 0.25% of 65.5% mass ratio, zinc 34.17%.
The manufacturing method of above-mentioned zinc release resistant low-lead brass, includes the following steps：
1）Prepare before production
1. raw material preparation：Prepare ledrite HPb66-05 raw material, prepare enough glass puttys；
2. equipment and tooling prepare：Preparation is built-in with air flue and graphite agitating device and the vacuum electroslag remelting of melting kettle is set
Centrifugal separation equipment, special atmosphere oven, vacuum hot isostatic apparatus standby, connect with crucible；
2）Raw material are smelted
1. by the stage 1）1. glass putty that step prepares is sprayed on the stage 1）Crucible in 2. vacuum electroslag remelting equipment that step prepares
Inner surface to thickness 1.5mm-2mm, obtain for use crucible；
2. by the stage 1）1. ledrite HPb66-05 raw material that step prepares are put into 1. for use crucible that step prepares, are taken out true
Sky is to vacuum degree 1 × 10-3, then heat to ledrite HPb66-05 raw material and be completely melt, obtain molten bath；
3. open centrifugal separation equipment, and with the rate of 800rpm carry out rotating centrifugal separation, to speed after continue five minutes, then
Outer layer molten bath composition is detached, two layers of internal layer molten bath is retained；
4. opening graphite agitating device, 3. internal layer molten bath that step obtains is stirred with the rate of 50rpm, continues 15min,
Obtain purifying molten bath；
5. by the stage 1）2. special atmosphere oven that step prepares is preheated to 370 DEG C；
6. 4. purifying molten bath that step obtains is transferred in the special atmosphere oven after 5. preheating that step obtains, temperature is kept
370 DEG C, continue 3h, detach liquid, retain solid, obtains purifying base；
7. 6. purifying base that step is obtained uses the stage 1）2. vacuum hot isostatic apparatus that step prepares is with 320 DEG C of temperature
Degree, the pressure treatment 1h of 100MPa obtain required zinc release resistant low-lead brass.
Only contain according to the zinc release resistant low-lead brass that the present embodiment produces, in final products account for 0.08% mass ratio lead,
Copper, the impurity 0.25% of 65.5% mass ratio, zinc 34.17%.
Embodiment 2：
It is whole consistent with embodiment 1, it is in place of difference：
A kind of zinc release resistant low-lead brass, using HPb66-05 as raw material, in final products only contain account for 0.05% mass ratio lead,
Copper, the impurity 0.20% of 68.4% mass ratio, zinc 31.35%.
The manufacturing method of above-mentioned zinc release resistant low-lead brass, includes the following steps：
2）Raw material are smelted
1. by the stage 1）1. glass putty that step prepares is sprayed on the stage 1）Crucible in 2. vacuum electroslag remelting equipment that step prepares
Inner surface to thickness 2mm, obtain for use crucible；
2. by the stage 1）1. ledrite HPb66-05 raw material that step prepares are put into 1. for use crucible that step prepares, are taken out true
Sky is to vacuum degree 1 × 10-4, then heat to ledrite HPb66-05 raw material and be completely melt, obtain molten bath；
3. open centrifugal separation equipment, and with the rate of 1000rpm carry out rotating centrifugal separation, to speed after continue five minutes, so
Separation outer layer molten bath composition afterwards, retains two layers of internal layer molten bath；
4. opening graphite agitating device, 3. internal layer molten bath that step obtains is stirred with the rate of 60rpm, continues 20min,
Obtain purifying molten bath；
5. by the stage 1）2. special atmosphere oven that step prepares is preheated to 380 DEG C；
6. 4. purifying molten bath that step obtains is transferred in the special atmosphere oven after 5. preheating that step obtains, temperature is kept
380 DEG C, continue 4h, detach liquid, retain solid, obtains purifying base；
7. 6. purifying base that step is obtained uses the stage 1）2. vacuum hot isostatic apparatus that step prepares is with 350 DEG C of temperature
Degree, the pressure treatment 1.5h of 120MPa obtain required zinc release resistant low-lead brass.
Only contain according to the zinc release resistant low-lead brass that the present embodiment produces, in final products account for 0.05% mass ratio lead,
Copper, the impurity 0.20% of 68.4% mass ratio, zinc 31.35%.
The foregoing description of the disclosed embodiments, only for enabling professional and technical personnel in the field to realize or using this
Invention.Various modifications to these embodiments will be apparent to those skilled in the art, institute herein
The General Principle of definition can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore,
The present invention is not intended to be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty
The consistent widest range of point.
Claims (2)
1. a kind of manufacturing method of zinc release resistant low-lead brass, it is characterised in that include the following steps：
1）Prepare before production
1. raw material preparation：Prepare ledrite HPb66-05 raw material, prepare enough glass puttys；
2. equipment and tooling prepare：Preparation is built-in with air flue and graphite agitating device and the vacuum electroslag remelting of melting kettle is set
Centrifugal separation equipment, special atmosphere oven, vacuum hot isostatic apparatus standby, connect with crucible；
2）Raw material are smelted
1. by the stage 1）1. glass putty that step prepares is sprayed on the stage 1）Crucible in 2. vacuum electroslag remelting equipment that step prepares
Inner surface to thickness 1.5mm-2mm, obtain for use crucible；
2. by the stage 1）1. ledrite HPb66-05 raw material that step prepares are put into 1. for use crucible that step prepares, are taken out true
Sky is to vacuum degree 1 × 10-3-1×10-4, then heat to ledrite HPb66-05 raw material and be completely melt, obtain molten bath；
3. open centrifugal separation equipment, and with the rate of 800rpm-1000rpm carry out rotating centrifugal separation, to speed after continue five
Minute, outer layer molten bath composition is then detached, two layers of internal layer molten bath is retained；
4. opening graphite agitating device, 3. internal layer molten bath that step obtains is stirred with the rate of 50rpm-60rpm, is continued
15min-20min obtains purifying molten bath；
5. by the stage 1）2. special atmosphere oven that step prepares is preheated to 370 DEG C -380 DEG C；
6. 4. purifying molten bath that step obtains is transferred in the special atmosphere oven after 5. preheating that step obtains, temperature is kept
370 DEG C -380 DEG C, continue 3h-4h, detach liquid, retain solid, obtains purifying base；
7. 6. purifying base that step is obtained uses the stage 1）2. vacuum hot isostatic apparatus that step prepares is with 320 DEG C -350 DEG C
Temperature, the pressure treatment 1h-1.5h of 100MPa-120MPa, that is, obtain needed for zinc release resistant low-lead brass.
2. a kind of zinc release resistant low-lead brass manufactured using claim 1 the method, it is characterised in that：The low lead and yellow-collation of the zinc release resistant
Copper only contains lead, the 65.5%-68.4% mass ratioes for accounting for 0.05%-0.08% mass ratioes using HPb66-05 as raw material in final products
Copper, impurity be not higher than 0.25%, surplus is zinc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077247.1A CN108330319A (en) | 2018-01-26 | 2018-01-26 | A kind of zinc release resistant low-lead brass and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077247.1A CN108330319A (en) | 2018-01-26 | 2018-01-26 | A kind of zinc release resistant low-lead brass and its manufacturing method |
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| Publication Number | Publication Date |
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| CN108330319A true CN108330319A (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810077247.1A Pending CN108330319A (en) | 2018-01-26 | 2018-01-26 | A kind of zinc release resistant low-lead brass and its manufacturing method |
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Citations (6)
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|---|---|---|---|---|
| US5707421A (en) * | 1997-02-18 | 1998-01-13 | Joe; Shelley L. | Process for the inhibition of leaching of lead from brass alloy plumbing fixtures |
| CN101701304A (en) * | 2009-12-02 | 2010-05-05 | 宁波金田铜业(集团)股份有限公司 | Low-cost corrosion-resistant lead-free easy-cutting brass and manufacturing method thereof |
| CN101994024A (en) * | 2009-08-28 | 2011-03-30 | 摩登岛股份有限公司 | Anti-dezincification copper alloy and preparation method of objects made of same |
| CN102560190A (en) * | 2012-01-30 | 2012-07-11 | 九星控股集团有限公司 | High-zinc leadless brass alloy and preparation method thereof |
| CN103451470A (en) * | 2013-09-22 | 2013-12-18 | 付亚波 | Dezincification-corrosion-resistant environment-friendly nano material brass alloy and preparing method thereof |
| CN103484714A (en) * | 2013-09-16 | 2014-01-01 | 苏州金仓合金新材料有限公司 | Novel vertical continuous casting unleaded copper base alloy pipe and preparation method thereof |
-
2018
- 2018-01-26 CN CN201810077247.1A patent/CN108330319A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5707421A (en) * | 1997-02-18 | 1998-01-13 | Joe; Shelley L. | Process for the inhibition of leaching of lead from brass alloy plumbing fixtures |
| CN101994024A (en) * | 2009-08-28 | 2011-03-30 | 摩登岛股份有限公司 | Anti-dezincification copper alloy and preparation method of objects made of same |
| CN101701304A (en) * | 2009-12-02 | 2010-05-05 | 宁波金田铜业(集团)股份有限公司 | Low-cost corrosion-resistant lead-free easy-cutting brass and manufacturing method thereof |
| CN102560190A (en) * | 2012-01-30 | 2012-07-11 | 九星控股集团有限公司 | High-zinc leadless brass alloy and preparation method thereof |
| CN103484714A (en) * | 2013-09-16 | 2014-01-01 | 苏州金仓合金新材料有限公司 | Novel vertical continuous casting unleaded copper base alloy pipe and preparation method thereof |
| CN103451470A (en) * | 2013-09-22 | 2013-12-18 | 付亚波 | Dezincification-corrosion-resistant environment-friendly nano material brass alloy and preparing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 中国南京无线电公司等: "《电子产品可焊性及焊接技术》", 31 October 1987, 中国南京无线电公司等 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180727 |
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| RJ01 | Rejection of invention patent application after publication |