CN1358874A - Rareearth containing tin brass pipe and making method thereof - Google Patents

Rareearth containing tin brass pipe and making method thereof Download PDF

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Publication number
CN1358874A
CN1358874A CN 01132152 CN01132152A CN1358874A CN 1358874 A CN1358874 A CN 1358874A CN 01132152 CN01132152 CN 01132152 CN 01132152 A CN01132152 A CN 01132152A CN 1358874 A CN1358874 A CN 1358874A
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China
Prior art keywords
rare earth
pipe
making
annealing
tensile strength
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CN 01132152
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Chinese (zh)
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CN1121503C (en
Inventor
方云
姚鹤荣
薛祖善
张国良
吴谟鸿
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上海威嘉金属材料有限公司
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Priority to CN 01132152 priority Critical patent/CN1121503C/en
Publication of CN1358874A publication Critical patent/CN1358874A/en
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Publication of CN1121503C publication Critical patent/CN1121503C/en

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Abstract

The present invention relates to a rare earth bearing tin bronze pipe and its production method. Its main composition contains (wt%) Sn 7.0-8.0, P 0.1-0.25 and rare earth 0.1-0.3. The described rare eart his one of La, Ce, Pr and Nd, or La-bearing rare earth or mixed rare earth. The action of rare earth is to inhibit grain growth and make the average grain diameter be 0.01-0.018 mm, then the prepared raw material is undergone the processes of industrial frequency melting at 1070-1130 deg.C, continuously-casting to obtain blank, extruding, annealing at 520-640 deg.C, multiple stretching, working coefficient is 1.1-1.5, and can be made into Bourndon pipe with several specifications, its outside diameter is 1-24 mm, wall thickness is 0.06-1.5 mm, tensile strength is 410-530 Mpa and its percentage elongation is 50-65%, and its cost is low.

Description

A kind of bronze pipe and making method that contains rare earth
Technical field
The present invention relates to a kind of bronze pipe and making method that contains rare earth, relate to a kind of Baden's pipe and manufacture method of manometer special use or rather, belong to the bronze pipe field.
Background technology
The high-performance bronze pipe is Baden's pipe of making in the manometer, is the heart component in the instrument.Be widely used in industries such as chemical industry, machinery, oil.Manometer is a consumable products, it is reported that only the year import volume of American market just reaches 100,000,000, and the high-performance of energy production at present bronze pipe, and its manufacturer that is bent into Bourton (Baden) pipe situation of selling well world market is few.
The Bachmaier ﹠amp of Germany; Klemmer (B ﹠amp; K) company is maximum in the world at present tensimeter parts manufacturer, the Bourdon pipe standards size 40-160mm of its production, pressure range 0.6-100bar.On material, mainly contain CuSn8, CuZn15, CuZn37, stainless steel, Monel metal (Monel), CuBe2 etc.
The Zheleznyakov of the U.S. proposes, and be applied to the Bourdon pipe through age hardening copper glass alloy C17510 and have excellent properties, but unit elongation is still unsatisfactory.Germany B ﹠amp; The tensile strength height of the CuSn8 of K company, CuZn15, CuZn37, CuBe2 and unit elongation 〉=50%, but price is more expensive, and CuBe2 is also toxic in making processes, contaminate environment.
In sum, the high-performance bronze pipe of high-performance manometer special use require be the tensile strength height (〉=420Mpa), good percentage elongation (〉=50%), precision is high and make pipe without chemical treatment, pipe is inside and outside highly polished, and price is lower than B ﹠amp; Baden's pipe in the tensimeter that K company produces and performance is approaching, this is the target that people are laying siege to always.
Summary of the invention
The object of the present invention is to provide a kind of bronze pipe and making method that contains rare earth,, tinbronze is run well had high tensile strength, Vickers' hardness and good unit elongation, and price is far below B to satisfy the requirement that manometer is used; Baden's pipe price of K company.
The objective of the invention is in the composition design, to pass through to add rare earth element in tinbronze, on complete processing, adopt rational processing coefficient and annealing process to reach again.Be specifically described as follows:
1. material (code name the is QSn8-0.2) component (wt%) that contains the bronze pipe of rare earth is,
Sn 7.0-8.0, Al 0.002, and Zn 0.01, Ni 0.01, and Fe 0.02, and Sb 0.02, Bi 0.002, and Si 0.002, P 0.10-0.25, rare earth 0.1-0.3, other impurity summation≤0.15, surplus are Cu, described rare earth or be a kind of among rare earth La, Ce, Pr, the Nd, or for containing the lanthanum rare earth, or be mishmetal (for example product of Shanghai Yuelong Chemical Plant).
The adding of rare earth element can effectively suppress grain growing, and making average grain diameter is 0.01-0.018mm.
2. by after the said components preparation, melting in main frequency furnace, smelting temperature is 1070-1130 ℃, continuously cast bloom is heated to 600-680 ℃ after the melting, by extruding → annealing → tube rolling → annealing → multiple tracks stretching → finishing process process, can be made into Baden's pipe of plurality of specifications size, its outside dimension scope 1-24mm, wall thickness is 0.06-1.5mm.
Annealing temperature 520-640 ℃, annealing atmosphere is nitrogen protection, and different size processing coefficient is between 1.1-1.5.
Through above-mentioned manufacture craft, make the tensile strength of the bronze pipe of making and unit elongation reach an optimum regime of mating mutually, and with external B ﹠amp; The pipe performance that K company produces is suitable, and the fluctuation range of extensibility is little, illustrates to make the bronze pipe stable performance, and table 1 has been listed B ﹠amp; The Bourdon pipe performance of the corresponding making of the K company and the U.S. is with the performance comparison of bronze pipe provided by the invention.
Description of drawings
Fig. 1,2 is respectively the microstructure photograph of  8 * 0.17mm and  8 * 0.26mm, Fig. 1 grain-size is 0.017mm, Fig. 2 is 0.013mm (magnification be 100 *), from figure as can be seen, grain-size is more even, illustrates that set of dispense provided by the invention can obtain the material of texture preferably with rational processing coefficient and annealing process.
Table 1
Material Tensile strength (Mpa) Unit elongation %
?CuSn?8 255-496 ?50-3
?CuZn?15 269-724 ?55-3
?CuZn?37 317-883 ?65-3
?CuBe?2 469-1479 ?48-3
?C?17510 310-793 ?28-5
?QSn?4-0.3 * 490-637 ?2
?QSn?6.5-0.1 * 323-480 ?35
The present invention 410-530 ?50-65
*The tinbronze of homemade existing two models
Embodiment
The component (wt%) of embodiment 1 material is:
Sn 7.5, and Al 0.002, and Zn 0.01, and Ni 0.01, and Fe 0.02, and Sb 0.02, and Bi 0.002, and Si 0.002, and P 0.20, rare earth La 0.2, and other impurity summation≤0.15, surplus is Cu.
The preparation back is 1090 ℃ of meltings, after strand becomes ℃ extruding of 25 * 1.5mm blank post-heating to 640, in 600 ℃, at N 2Anneal under the atmosphere, tube rolling is after 3 roads stretch then, and the processing coefficient is controlled at 1.2, forms  8 * 0.17mm Baden pipe through 620 ℃ of annealing controls then, and its grain-size is 0.017mm, concrete texture as shown in Figure 1, tensile strength 480Mpa, unit elongation are 55%.
The component middle-weight rare earths of embodiment 2 materials is a mishmetal, and add-on is 0.25, and the blank anneal temperature is 580 ℃, the processing coefficient is controlled at 1.4, and then forms  8 * 0.26mm through 600 ℃ of annealing finishing, and its texture as shown in Figure 2, tensile strength is 450Mpa, and unit elongation is 58%, and all the other together
Embodiment 1.
Sn is 7.8 in embodiment 3 material components, and P is 0.18, and rare earth is Ce, and add-on is 0.15, and the processing coefficient is 1.3.The tensile strength of last Baden pipe is 430Mpa, and unit elongation is 60%, and all the other together
Embodiment 1.

Claims (3)

1. bronze pipe that contains rare earth is characterized in that:
(1) material consists of (wt%):
Sn 7.0-8.0, Al 0.002, and Zn 0.01, and Ni 0.01, and Fe 0.02, and Sb 0.02, and Bi 0.002, and Si 0.002, P 0.10-0.25, rare earth element 0.1-0.3, other impurity summation≤0.15, surplus is Cu;
(2) average grain size 0.010-0.018mm.
2. by the described bronze pipe that contains rare earth of claim 1, it is characterized in that described rare earth element is a kind of among La, Ce, Pr, the Nd, or for containing the La rare earth, or be mishmetal.
3. by the described bronze pipe making method that contains rare earth of claim 1, comprise melting, extruding, annealing, tube rolling, drawing process process, it is characterized in that:
(1) temperature of melting is 1070-1130 ℃ in the main frequency furnace;
(2) annealing temperature is 520-640 ℃, nitrogen protection;
(3) the processing coefficient is between 1.1-1.5.
CN 01132152 2001-11-08 2001-11-08 Rareearth containing tin brass pipe and making method thereof CN1121503C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN 01132152 CN1121503C (en) 2001-11-08 2001-11-08 Rareearth containing tin brass pipe and making method thereof

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CN1358874A true CN1358874A (en) 2002-07-17
CN1121503C CN1121503C (en) 2003-09-17

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102634689A (en) * 2012-04-25 2012-08-15 苏州金仓合金新材料有限公司 Rare earth copper alloy rod for petrochemical engineering equipment and preparation method of rare earth copper alloy rod
CN101579701B (en) * 2009-06-18 2012-09-05 中铝洛阳铜业有限公司 Preparation process of copper pipe material for electronic thermotubes
CN103337294A (en) * 2013-06-06 2013-10-02 江阴新华宏铜业有限公司 Railway through ground wire and preparation process thereof
CN104294081A (en) * 2014-05-28 2015-01-21 镇江汇通金属成型有限公司 High-strength heat-resisting anti-friction casting tin-nickel bronze and preparation method thereof
CN104630675A (en) * 2015-02-06 2015-05-20 苏州富瑞合金科技股份有限公司 Preparation method of tin bronze coil pipe
CN106119598A (en) * 2016-08-09 2016-11-16 苏州天兼新材料科技有限公司 A kind of Cu-base composites being applied to locomotive engine parts and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101579701B (en) * 2009-06-18 2012-09-05 中铝洛阳铜业有限公司 Preparation process of copper pipe material for electronic thermotubes
CN102634689A (en) * 2012-04-25 2012-08-15 苏州金仓合金新材料有限公司 Rare earth copper alloy rod for petrochemical engineering equipment and preparation method of rare earth copper alloy rod
CN103337294A (en) * 2013-06-06 2013-10-02 江阴新华宏铜业有限公司 Railway through ground wire and preparation process thereof
CN103337294B (en) * 2013-06-06 2015-12-23 江阴新华宏铜业有限公司 Railway run-through ground line and preparation technology thereof
CN104294081A (en) * 2014-05-28 2015-01-21 镇江汇通金属成型有限公司 High-strength heat-resisting anti-friction casting tin-nickel bronze and preparation method thereof
CN104294081B (en) * 2014-05-28 2017-02-15 镇江汇通金属成型有限公司 High-strength heat-resisting anti-friction casting tin-nickel bronze and preparation method thereof
CN104630675A (en) * 2015-02-06 2015-05-20 苏州富瑞合金科技股份有限公司 Preparation method of tin bronze coil pipe
CN106119598A (en) * 2016-08-09 2016-11-16 苏州天兼新材料科技有限公司 A kind of Cu-base composites being applied to locomotive engine parts and preparation method thereof

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