CN1009571B - 钨5%铼-钨26%铼热电偶用补偿导线 - Google Patents

钨5%铼-钨26%铼热电偶用补偿导线

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Publication number
CN1009571B
CN1009571B CN 88105067 CN88105067A CN1009571B CN 1009571 B CN1009571 B CN 1009571B CN 88105067 CN88105067 CN 88105067 CN 88105067 A CN88105067 A CN 88105067A CN 1009571 B CN1009571 B CN 1009571B
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tungsten
rhenium
compensating wire
compensating
present
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CN 88105067
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CN1038161A (zh
Inventor
彭行建
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SHENYANG ALLOY FACTORY
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SHENYANG ALLOY FACTORY
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Priority to CN 88105067 priority Critical patent/CN1009571B/zh
Publication of CN1038161A publication Critical patent/CN1038161A/zh
Publication of CN1009571B publication Critical patent/CN1009571B/zh
Expired legal-status Critical Current

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Abstract

一种钨5%铼-钨26%铼热电偶用补偿导线,适合于在冶金、化工、石油、航空、机械、玻璃工业、核工业等领域使用。补偿导线正极用铜,负极合金成份(Wt%)为:Ni2.0~3.5,C0.04~0.1,Si0~0.2,Cu余量,在0~200℃温度范围内使用,允差为±(3~5)℃。本发明的优点是测量误差小,成本低。

Description

本发明属于温度测量技术领域,是一种钨5%铼-钨26%铼热电偶用补偿导线。
补偿导线是由具有和热电偶相同热电特性的正、负导体、绝缘层和护套层组成。它连接在热电偶和测温仪表之间,用以补偿热电偶冷端温度变化所产生的误差。
钨5%铼-钨26%铼热电偶是使用温度最高的热电偶,可测量2000℃以上高温,广泛用于冶金、化工、航空、机械、玻璃工业和核工业。
钨5%铼-钨26%铼热电偶用补偿导线是一种具有和钨5%铼-钨26%铼热电偶相同的热电特性的一对导线,能保证测量仪表在稳定的环境下测温,应用很广泛。
美国材料试验学会标准(ASTME988-84)中公布了一种钨5%铼-钨26%铼热电偶用补偿导线,补偿导线正负极成份为:正极94.5%Ni,2%Mn,1%Si,1.5%Al,负极80%Ni,20%Cu。这种补偿导线在0~871℃温度范围内,初次分度允差为±110mV(±7℃)。合金采用高镍,成本高,分度允差大。
本发明的目的在于提供一种价格低廉,分度允差小的钨5%铼-钨26%铼热电偶用补偿导线。
本发明是这样实现的:合金成份如下(Wt%)
正极:Cu
负极:Ni    2.0~3.5%
C    0.04~0.1%
Si    0~0.2%
Cu    余量
正极用铜,负极用上述合金配制成补偿导线,在0~200℃温度范围内,补偿导线的热电势与钨5%铼-钨26%铼热电偶的热电势相匹配,0~100℃温度范围,允差定为0.051mv,0~200℃温度范围,允差定为0.085mv。采用本发明的补偿导线,价格低廉,测量 误差小。适合于在温度测量中使用。
下面结合实例进一步说明本发明方案。
根据实际应用和国际电工委员会标准IEC584-3,热电偶第三部分延伸线和补偿导线标准中R型式S型所匹配的补偿导线的温度范围允差规定:使用温度0~200℃时,其热电热允差定为±(3-5)℃。
实例1:
本发明采用合金成分,使用温度范围,允差如表1所示。
表1所示补偿导线在0~200℃温度范围内允差为0.031mV(相当于1.8℃)
表2是本发明正、负极其它性能。
本发明Ni低于2%时,不能获得相应的热电特性,Ni大于3.5%同样不能保证所需的热电特性,而且成本增加。其C含量在此范围内,一方面保证合金加工特性,并起到热电特性调整作用。Si在此范围内主要调整热电特性曲线。
本发明的生产工艺采用惯用的方法,首先按合金成分配料,在感应电炉熔炼、铸锭,在850℃温度下进行锻造、轧制,然后冷拉成丝,最后在300℃温度下,进行成品退火。
采用本发明的补偿导线可以减少温度测量系统的误差,成本低,适合于在冶金、石油、航空、化工、玻璃工业等领域使用。
表1
本发明的补偿导线    温度    热电势mV    允差
(Wt%)    ℃    热电偶    补偿导线    mV
正极:Cu    100    1.451    1.420    -0.031
负极:Ni2.62
C    0.05    150    2.250    2.234    -0.016
Si0.11
Cu余量    200    3.089    3.100    +0.011
表2
名称    20℃电阻率    抗拉强度    延伸率
Ωmm2/M kg/m2%
正极    <0.02    ≥20    ≥30
负极    <0.04    ≥22    ≥25

Claims (2)

1、一种钨5%铼-钨26%铼热电偶用补偿导线,其特征在于:所述的补偿导线正极用铜,负极合金成份如下(Wt%):
负极:Ni  2.0~3.5
      C   0.04~0.1
     Si   0~0.2
     Cu   余量
2、根据权利要求1所述的补偿导线,其特征在于所述的补偿导线正极用铜,负极合金成份如下(Wt%):
负极:Ni  2.62
C  0.05
Si  0.11
Cu  余量
CN 88105067 1988-05-26 1988-05-26 钨5%铼-钨26%铼热电偶用补偿导线 Expired CN1009571B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 88105067 CN1009571B (zh) 1988-05-26 1988-05-26 钨5%铼-钨26%铼热电偶用补偿导线

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 88105067 CN1009571B (zh) 1988-05-26 1988-05-26 钨5%铼-钨26%铼热电偶用补偿导线

Publications (2)

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CN1038161A CN1038161A (zh) 1989-12-20
CN1009571B true CN1009571B (zh) 1990-09-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100376691C (zh) * 2006-08-07 2008-03-26 浙江大学 转基因昆虫荧光基因表达相对量无损伤测定方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100376691C (zh) * 2006-08-07 2008-03-26 浙江大学 转基因昆虫荧光基因表达相对量无损伤测定方法

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CN1038161A (zh) 1989-12-20

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