KR100968528B1 - Spring Manufactruing method for heating Sensor using shape memory arroy - Google Patents
Spring Manufactruing method for heating Sensor using shape memory arroy Download PDFInfo
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- KR100968528B1 KR100968528B1 KR1020080012691A KR20080012691A KR100968528B1 KR 100968528 B1 KR100968528 B1 KR 100968528B1 KR 1020080012691 A KR1020080012691 A KR 1020080012691A KR 20080012691 A KR20080012691 A KR 20080012691A KR 100968528 B1 KR100968528 B1 KR 100968528B1
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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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, 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
- C22F1/006—Resulting in heat recoverable alloys with a memory effect
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
본 발명은 Ti-Ni계 형상기억합금을 이용한 스프링의 오동작 유발을 방지하여 불량률을 크게 저하시키고자 하는 것이다. The present invention is to prevent the malfunction of the spring using the Ti-Ni-based shape memory alloy to significantly reduce the failure rate.
이를 위해 본 발명은 10℃∼100℃에서 작동할수 있는 Ti-Ni계 형상기억합금의 원재를 스프링 형상으로 가공하고, 500℃ 이상에서 열처리 하는 것에 있어서, 상기 열처리된 형상기억합금의 스프링을 -5℃∼-30℃ 사이에서 30분간 냉각시켜 안정화 처리한 다음 20℃의 온도와 70%의 습도를 가지는 케이스 내에 수납시켜 30분간 보습 보관하고, 보습처리된 스프링의 표면을 증류수로 세척, 건조 처리하여 제조함을 특징으로 하는 것이다. To this end, the present invention is to process the raw material of the Ti-Ni-based memory memory alloy that can operate at 10 ℃ to 100 ℃ in the shape of a spring, and in heat treatment at 500 ℃ or more, the heat-treated spring of the shape memory alloy -5 After cooling for 30 minutes between ℃ ~ -30 ℃ stabilized, stored in a case having a temperature of 20 ℃ and humidity of 70% and kept moisturized for 30 minutes, the surface of the moisturized spring is washed with distilled water, dried It is characterized by manufacturing.
Description
본 발명은 형상기억합금을 이용한 열센서용 스프링의 제조방법에 관한 것이다. The present invention relates to a method of manufacturing a spring for a thermal sensor using a shape memory alloy.
종래 소화용 스프링쿨러, 의료용 치아 교정용 스프링, 혈관의 혈전제거용 걸름막, 석유난로 소화장치, 밥솥용 스팀 홀바디 등에 사용되는 Ti-Ni계 형상기억합금을 이용한 열센서용 스프링은 불량률로 인해 정해진 일정온도 이상에서 작동되어 품질저하를 가져오는 것이 큰 문제였다. Conventional fire sprinkler, medical orthodontic spring, blood clot removal membrane, petroleum stove fire extinguishing device, thermal sensor spring using Ti-Ni-type memory alloy used for steam cooker for cooker due to the defective rate It was a big problem to operate at a certain temperature or higher, resulting in deterioration of quality.
즉, 종래 Ti-Ni계 형상기억합금을 이용한 스프링은 Ti-Ni계 형상기억합금의 원재를 스프링 형상으로 가공하고, 500℃ 이상에서 열처리하여 가공하여 왔다. That is, conventional springs using Ti-Ni-based shape memory alloys have been processed by processing raw materials of Ti-Ni-based shape memory alloys into a spring shape and heat-treated at 500 ° C or higher.
이경우, Ni의 성분은 열처리로 인하여 조직이 부풀어지는 현상이 발생되어 정해진 일정온도(예컨대 10℃∼100℃ 작동) 이상 즉, 100℃ 이상에서 작동되어 소화기용 스프링쿨러 등의 오동작을 유발하는 문제점이 있어왔다. In this case, the component of Ni is swelled due to heat treatment, which causes the malfunction of the sprinkler for fire extinguishers to operate at a predetermined temperature (eg, 10 ° C. to 100 ° C. operation) or more, that is, 100 ° C. or more. Has been.
즉, 기본적으로 500℃ 이상에서 Ti-Ni계 형상기억합금을 열처리하게 되면 불량률이 약 3% 이상 발생되어 열센서의 품질이 크게 저하된다. In other words, when the Ti-Ni-based shape memory alloy is heat-treated at 500 ° C. or more, the defective rate is about 3% or more, and the quality of the thermal sensor is greatly reduced.
본 발명은 Ti-Ni계 형상기억합금을 이용한 스프링의 오동작 유발을 방지하여 불량률을 크게 저하시키고자 하는 것이다. The present invention is to prevent the malfunction of the spring using the Ti-Ni-based shape memory alloy to significantly reduce the failure rate.
이를 위해 본 발명은 10℃∼100℃에서 작동할수 있는 Ti-Ni계 형상기억합금의 원재를 스프링 형상으로 가공하고, 500℃ 이상에서 열처리 하는 것에 있어서, 상기 열처리된 형상기억합금의 스프링을 -5℃∼-30℃ 사이에서 30분간 냉각시켜 안정화 처리한 다음 20℃의 온도와 70%의 습도를 가지는 케이스 내에 수납시켜 30분간 보습 보관하고, 보습처리된 스프링의 표면을 증류수로 세척, 건조 처리하여 제조함을 특징으로 하는 것이다. To this end, the present invention is to process the raw material of the Ti-Ni-based memory memory alloy that can operate at 10 ℃ to 100 ℃ in the shape of a spring, and in heat treatment at 500 ℃ or more, the heat-treated spring of the shape memory alloy -5 After cooling for 30 minutes between ℃ ~ -30 ℃ stabilized, stored in a case having a temperature of 20 ℃ and humidity of 70% and kept moisturized for 30 minutes, the surface of the moisturized spring is washed with distilled water, dried It is characterized by manufacturing.
본 발명은 Ti-Ni계 성분의 형상기억합금으로 이루어진 스프링을 열처리한 다음 -5℃∼-30℃ 에서 압축하는 안정화 작업 처리를 통해 Ni계 성분의 부풀어짐을 압축시켜 안정화 시킴로써 열센서로 이용될시 오동작 유발을 최소화 시킬 뿐 아니 라 가공된 스프링의 표면을 증류수로 세척하여 스프링 표면의 불순물을 제거하게 되므로써 불량률을 최소화 시킬 수 있는 효과를 가진다. The present invention is used as a thermal sensor by compressing and stabilizing the swelling of the Ni-based component through a stabilization operation process to heat the spring consisting of the shape memory alloy of the Ti-Ni-based component and then compress at -5 ℃ ~ -30 ℃ In addition to minimizing malfunctions, the surface of the processed spring is washed with distilled water to remove impurities from the surface of the spring, thereby minimizing the failure rate.
본 발명은 일정온도범위(10℃∼100℃)에서 작동하는 Ti-Ni계 형상기억합금의 원재를 스프링 형상으로 가공한 후 500℃ 이상에서 열처리하는 것에 있어서, 상기 열처리된 형상기억합금의 스프링을 -5℃∼-30℃ 사이에서 30분간 냉각 압축시켜 안정화 처리한 다음 20℃의 온도와 70%의 습도를 가지는 케이스 내에 수납시켜 30분간 보습 보관하고, 보습처리된 스프링의 표면을 증류수로 세척, 건조 처리하는 것이다. The present invention is to process the raw material of the Ti-Ni-based shape memory alloy operating in a certain temperature range (10 ℃ ~ 100 ℃) in the shape of a spring, and then heat treatment at 500 ℃ or more, the spring of the heat-treated shape memory alloy After cooling and compressing for 30 minutes between -5 ° C and -30 ° C for stabilization, it is stored in a case having a temperature of 20 ° C and a humidity of 70%, stored for 30 minutes, and the surface of the moisturized spring is washed with distilled water, It is a drying process.
이와같은 본 발명은 열처리된 Ti-Ni계 형상기억합금으로 된 스프링은 500℃ 이상으로 열처리하게 되므로 특히, Ni계 성분이 부풀어져 조직의 이상 현상을 가져오게 된다. 따라서 원래 원하는 10℃∼100℃ 사이에서 스프링으로 된 열센서가 동작되어야 하나, Ni성분의 조직이 부풀어져 동작 불량 상태를 유발하게 되는 것이다.In the present invention as described above, the heat-treated spring of the Ti-Ni shape memory alloy is heat treated at 500 ° C. or higher, and in particular, the Ni-based component is swelled, resulting in abnormal phenomenon of the structure. Therefore, the original thermal sensor should be operated between the desired 10 ℃ ~ 100 ℃, but the swelling of the Ni component will cause a malfunction.
즉, 30∼40만개의 스프링을 제조하여 실험한 결과 약 3% 이상의 불량률이 존재되어 왔다. That is, about 3 to 400,000 springs were manufactured and tested, and a defective rate of about 3% or more has been present.
이와같이 Ni계 성분이 부풀어진 상태에서 -5℃∼-30℃ 사이의 냉각 상태로 압축하여 안정화 처리하게 되면 부풀어진 Ni계 성분이 압축되어 Ni계 성분의 조직을 일정하게 복원시켜 형상기억합금이 가지는 본래의 제성질을 유지하게 되고, 20 ℃의 상온과 70%의 습도하에서 제조된 스프링을 보습보관 하게 되면 안정화 단계와의 온도차에 의해 스프링의 표면에 수증기가 부착되게 되는데 이를 증류수로 세척하여 스프링 표면에 묻은 불필요한 불순물을 제거하게 되므로써 불량률이 크게 개선되게 된다. As such, when the Ni-based component is compressed and stabilized by cooling to a cooling state between -5 ° C. and -30 ° C., the expanded Ni-based component is compressed to uniformly restore the structure of the Ni-based component. Maintaining the original composition, if the moisture is stored at room temperature of 20 ℃ and humidity of 70%, the water vapor is attached to the surface of the spring by the temperature difference with the stabilization step, which is washed with distilled water and the surface of the spring The defect rate is greatly improved by removing unnecessary impurities on the substrate.
즉, 약 40만개의 스프링을 본 발명에 의해 제조하여 실험한 결과 현재까지 불량률이 거의 없는 것으로 보아 종래 3% 이상의 불량률에 비해 본 발명에 의한 열센서의 품질 향상이 크게 증대되게 된다. That is, about 400,000 springs were manufactured and tested according to the present invention. As a result, there is almost no defective rate. Thus, compared to the conventional defective rate of 3% or more, the quality improvement of the thermal sensor according to the present invention is greatly increased.
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| KR102445835B1 (en) * | 2017-10-13 | 2022-09-20 | 에스케이온 주식회사 | Battery Module Having Extinguishing Apparatus |
| KR102527287B1 (en) * | 2022-10-25 | 2023-05-02 | 주식회사 엔디트레이딩 | Manufacturing method of ultra-precise repeatable temperature fuse with shape memory alloy applied |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104645A (en) * | 1988-10-12 | 1990-04-17 | Kobe Steel Ltd | Method for stabilizing beta-type copper shape memory alloy |
| JPH10201855A (en) | 1997-01-13 | 1998-08-04 | Advanced Cardeovascular Syst Inc | Compressive collapse-proof inner tube stent and method for loading stent on baloon part of catheter |
| JP2007075618A (en) * | 2005-09-13 | 2007-03-29 | Sportswire Llc | Method of preparing nitinol for use in manufacturing instruments with improved fatigue resistance |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104645A (en) * | 1988-10-12 | 1990-04-17 | Kobe Steel Ltd | Method for stabilizing beta-type copper shape memory alloy |
| JPH10201855A (en) | 1997-01-13 | 1998-08-04 | Advanced Cardeovascular Syst Inc | Compressive collapse-proof inner tube stent and method for loading stent on baloon part of catheter |
| JP2007075618A (en) * | 2005-09-13 | 2007-03-29 | Sportswire Llc | Method of preparing nitinol for use in manufacturing instruments with improved fatigue resistance |
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