KR20240006158A - Metal Composition for a Thermal Fuse of a Sprinkler - Google Patents
Metal Composition for a Thermal Fuse of a Sprinkler Download PDFInfo
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- KR20240006158A KR20240006158A KR1020220082871A KR20220082871A KR20240006158A KR 20240006158 A KR20240006158 A KR 20240006158A KR 1020220082871 A KR1020220082871 A KR 1020220082871A KR 20220082871 A KR20220082871 A KR 20220082871A KR 20240006158 A KR20240006158 A KR 20240006158A
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- thermal fuse
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- sprinkler
- present
- alloy composition
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- 239000000203 mixture Substances 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 title description 5
- 239000002184 metal Substances 0.000 title description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 13
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052738 indium Inorganic materials 0.000 claims abstract description 13
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052709 silver Inorganic materials 0.000 claims abstract description 13
- 239000004332 silver Substances 0.000 claims abstract description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052718 tin Inorganic materials 0.000 claims abstract description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 21
- 230000008018 melting Effects 0.000 abstract description 19
- 239000000155 melt Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 229910052793 cadmium Inorganic materials 0.000 description 10
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 5
- 229910052787 antimony Inorganic materials 0.000 description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000005496 eutectics Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/12—Releasing means, e.g. electrically released heat-sensitive with fusible links
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C12/00—Alloys based on antimony or bismuth
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
본 발명은 스프링클러의 열을 감지하면 융해되어 스프링클러의 헤드를 작동시키는 써멀퓨즈 합금 조성물에 관한 것으로서 비스무트, 인듐, 주석 및 은을 기반으로 한 저융점 합금 조성물에 관한 기술이다. The present invention relates to a thermal fuse alloy composition that melts when it senses the heat of the sprinkler and operates the sprinkler head. It is a technology related to a low melting point alloy composition based on bismuth, indium, tin, and silver.
Description
본 발명은 스프링클러 써멀퓨즈용 합금 조성물에 관한 기술로서, 화재 발생에 의해 실내 온도가 일정 온도 이상으로 상승하면, 스프링클러 내의 써멀퓨즈는 고체에서 액체로 용융되면서, 이를 작동 신호로 하여 소화액이 실내로 분사되도록 한다. The present invention relates to an alloy composition for a sprinkler thermal fuse. When the indoor temperature rises above a certain temperature due to a fire, the thermal fuse in the sprinkler melts from solid to liquid, and fire extinguishing liquid is sprayed into the room using this as an operation signal. Make it possible.
스프링클러 써멀퓨즈는 저융점 특성이 요구되며, 종래에는 인체에 해롭지만 저융점의 물질 특징상 납, 카드뮴 등의 유해성 물질이 주로 사용되었으나, 본 발명은 납, 카드뮴을 대체하는 신규한 합금 조성물을 통해 안전규정 및 환경규정에 적합한 스프링클러용 써멀퓨즈를 제공하는 기술에 관한 것이다.Sprinkler thermal fuses require low melting point characteristics, and conventionally, hazardous substances such as lead and cadmium, which are harmful to the human body but are mainly used due to the characteristics of low melting point materials, are used in the present invention through a novel alloy composition that replaces lead and cadmium. This relates to technology that provides thermal fuses for sprinklers that comply with safety and environmental regulations.
본 발명은 스프링클러에 관한 것으로서, 일반적으로, 스프링클러(sprinkler)는 건물 내부의 천장에 설치되어 화재가 감지되면 소화액, 예컨대 물을 분사시킴으로써 진화하는 소방설비이다. The present invention relates to a sprinkler. Generally, a sprinkler is a fire-fighting equipment that is installed on the ceiling inside a building and extinguishes the fire by spraying fire extinguishing liquid, such as water, when a fire is detected.
스프링클러는 다양한 작동 구조가 공개되어 있으나, 전통적인 스프링클러의 헤드(H)는 도 1에 도시된 바와 같이, 파이프 연결소켓에 의해 소화액공급관과 연결되는 소화액분출구(1)와, 상기 소화액분출구(1)의 외주면으로부터 하향으로 연장되는 O링형 몸체(2)와, 상기 O링형 몸체(2)의 하부 외주면에 수평으로 결합된 소화액 확산판(6)과, 상기 소화액 분출구(1)를 막는 토출밸브(3)와, 상기 토출밸브(3)와 몸체(2) 하부 사이에서 토출밸브(3)를 떠받치는 트리거(4)와, 트리거(4)의 내에 설치된 써멀퓨즈(THERMAL FUSE)(F)를 포함하여 구성된다.Sprinklers have various operating structures, but as shown in FIG. 1, the head (H) of a traditional sprinkler consists of a fire extinguishing fluid outlet (1) connected to the fire extinguishing fluid supply pipe by a pipe connection socket, and the fire extinguishing fluid discharge port (1). An O-ring-shaped body (2) extending downward from the outer peripheral surface, a fire extinguishing liquid diffusion plate (6) horizontally coupled to the lower outer peripheral surface of the O-ring-shaped body (2), and a discharge valve (3) that blocks the fire extinguishing liquid outlet (1). It includes a trigger (4) supporting the discharge valve (3) between the discharge valve (3) and the lower part of the body (2), and a THERMAL FUSE (F) installed within the trigger (4). do.
써멀퓨즈는 열을 감지했을 때 용해되는데 법적으로 일정온도(예를 들어, 70 ~ 74℃)에서 용해가 되어야 하며, 위 온도 조건을 만족하기 위해서는 상대적으로 저융점의 금속 합금이 사용되어야 한다. 이러한 저융점 금속으로서 납, 카드뮴 등의 유해한 원소를 포함하는 써멀퓨즈가 종래에 주로 사용되었으나(예를 들어, 대한민국특허공개 제10-2016-0068223호, 제10-2012-0084850호 등), 이러한 납, 카드뮴 등의 중금속은 환경오염의 원인 물질이기에 이러한 유해 물질을 사용하지 않는 저융점의 써멀퓨즈의 개발이 요구되어 왔다.The thermal fuse melts when it senses heat, and by law it must melt at a certain temperature (for example, 70 to 74°C), and in order to satisfy the above temperature conditions, a metal alloy with a relatively low melting point must be used. As such low melting point metal, thermal fuses containing harmful elements such as lead and cadmium have been mainly used in the past (e.g., Korean Patent Publication Nos. 10-2016-0068223, 10-2012-0084850, etc.), but these Since heavy metals such as lead and cadmium are substances that cause environmental pollution, there has been a demand for the development of low-melting point thermal fuses that do not use these hazardous substances.
이러한 납, 카드뮴을 대체하는 써멀퓨즈용 합금 조성물의 예로서, 대한민국특허공개 제10-2022-0022434호에서는 인듐, 비스무트, 구리, 은, 안티몬의 5성분 이상을 포함하는 퓨즈메탈을 공개하고 있는데, 상기 퓨즈메탈은 비커스 경도가 종래 퓨즈메탈과 차이가 없으면서 기준온도에서 작동하는 점을 특징으로 한다. 다만, 상기 특허에서는 납, 카드뮴이 사용되지는 않았으나, 성분 중 하나인 안티몬은 비소와 유사한 특징을 갖는 물질로 발암 물질로 알려져 있는바 상기 특허의 합금 조성물 역시 문제점을 내포하고 있다.As an example of an alloy composition for a thermal fuse that replaces lead and cadmium, Korean Patent Publication No. 10-2022-0022434 discloses a fuse metal containing at least five components of indium, bismuth, copper, silver, and antimony. The fuse metal is characterized in that it operates at a standard temperature with no difference in Vickers hardness from that of conventional fuse metal. However, although lead and cadmium were not used in the above patent, antimony, one of the ingredients, is a substance with similar characteristics to arsenic and is known to be a carcinogen, so the alloy composition of the above patent also contains problems.
본 발명은 납, 카드뮴, 안티몬 등의 유해물질이 없는 신규한 써멀퓨즈용 합금 조성물의 필요성에 의해 연구 및 완성된 기술이다.The present invention is a technology researched and completed in response to the need for a novel alloy composition for thermal fuses that is free of harmful substances such as lead, cadmium, and antimony.
본 발명은 72℃ 내외에서 용융되는 저융점 스프링클러 써멀퓨즈용 합금 조성물을 제공하되, 납 및 카드뮴 등의 유해물질이 없는 써멀퓨즈용 합금 조성물을 제공하는 것을 목적으로 한다.The purpose of the present invention is to provide an alloy composition for a low-melting point sprinkler thermal fuse that melts at around 72°C, and is free of harmful substances such as lead and cadmium.
또한, 본 발명은 경도 및 압축강도가 스프링클러 써멀퓨즈에 적합한 써멀퓨즈용 합금 조성물을 제공하는 것을 목적으로 한다.Another object of the present invention is to provide an alloy composition for a thermal fuse with hardness and compressive strength suitable for a sprinkler thermal fuse.
또한, 본 발명은 공융점(eutectic point) 조성물을 통해 융점이 낮은 스프링클러 써멀퓨즈용 합금 조성물을 제공하는 것을 목적으로 한다.Additionally, the present invention aims to provide an alloy composition for a sprinkler thermal fuse having a low melting point through a eutectic point composition.
본 발명은 비스무트, 인듐, 주석 및 은을 포함하는 스프링클러 써멀퓨즈 조성물을 제공한다.The present invention provides a sprinkler thermal fuse composition containing bismuth, indium, tin and silver.
특히, 본 발명에서 상기 각 성분의 함량범위는, 비스무트 35 ~ 45 중량%, 인듐 35~45 중량%, 주석 10 ~ 25 중량%, 은 0.001~ 5 중량%일 수 있다.In particular, in the present invention, the content range of each of the above components may be 35 to 45% by weight of bismuth, 35 to 45% by weight of indium, 10 to 25% by weight of tin, and 0.001 to 5% by weight of silver.
특히, 본 발명에서 비스무트 40 ~ 45 중량%, 인듐 40 ~ 45 중량%, 주석 15 ~ 20 중량%, 은 0.001 ~ 3중량%일 수 있다.In particular, in the present invention, the content may be 40 to 45% by weight of bismuth, 40 to 45% by weight of indium, 15 to 20% by weight of tin, and 0.001 to 3% by weight of silver.
특히, 본 발명은 알루미늄 및 바나듐 중 어느 하나 이상을 0.001 ~ 2중량% 더 추가할 수 있다.In particular, the present invention can add 0.001 to 2% by weight of at least one of aluminum and vanadium.
본 발명의 비스무트, 인듐, 주석 및 은을 포함하는 합금 조성물의 스프링클러 써멀퓨즈는 약 72℃의 저융점으로서, 스프링클러 작동기준 온도에서 정확하게 용해가 된다. 또한, 본 발명의 합금 조성물은 납, 카드뮴, 안티몬 등의 유해한 원소를 함유한 종래의 써멀퓨즈용 저융점합금과 비교할 때 비커스 경도의 차이가 없고 인체에 무해하므로 스프링클러에 적용함에 있어 문제가 없다.The sprinkler thermal fuse of the present invention made of an alloy composition containing bismuth, indium, tin, and silver has a low melting point of about 72°C and dissolves accurately at the standard sprinkler operating temperature. In addition, the alloy composition of the present invention has no difference in Vickers hardness compared to conventional low melting point alloys for thermal fuses containing harmful elements such as lead, cadmium, and antimony, and is harmless to the human body, so there is no problem in applying it to sprinklers.
도 1은 종래의 스프링클러의 구조를 나타내는 단면도이다.
도 2는 본 발명의 실시예 샘플의 압축강도 실험 결과이다.
도 3은 본 발명의 실시예 샘플의 융점 실험 결과이다.Figure 1 is a cross-sectional view showing the structure of a conventional sprinkler.
Figure 2 shows the results of a compressive strength test of an example sample of the present invention.
Figure 3 shows the results of a melting point experiment of an example sample of the present invention.
본 발명은 비스무트, 인듐, 주석 및 은을 포함하는 스프링클러 써멀퓨즈 합금 조성물을 제공한다. The present invention provides a sprinkler thermal fuse alloy composition containing bismuth, indium, tin, and silver.
상기 각 성분의 혼합비는 비스무트 35 ~ 45 중량%, 인듐 35 ~ 45 중량%, 주석 10 ~ 25 중량%, 은 0.001 ~ 5 중량%일 수 있다. 특히, 본 발명에서 비스무트 40 ~ 45 중량%, 인듐 40 ~ 45 중량%, 주석 15 ~ 20 중량%, 은 0.001 ~ 3중량%일 수 있다. 상기 함량범위는 공융점(eutectic point) 또는 공융점 인접 함량 범위로서, 각 성분의 물성(경도, 압축강도 등)을 이용하면서도 저융점을 구현할 수 있는 장점이 있다. 본 발명의 조성물은 이러한 저융점 특성을 통해 종래 기술에서 사용하는 납, 카드뮴 등의 물질을 대체하면서도 스프링클러용 써멀퓨즈에 적합한 온도 및 강도 조건을 만족할 수 있다.The mixing ratio of each of the above components is 35 to 45% by weight of bismuth, 35 to 45% by weight of indium, 10 to 25% by weight of tin, and 0.001 to 5% by weight of silver. You can. In particular, in the present invention, the content may be 40 to 45% by weight of bismuth, 40 to 45% by weight of indium, 15 to 20% by weight of tin, and 0.001 to 3% by weight of silver. The content range is the eutectic point or the content range adjacent to the eutectic point, and has the advantage of being able to achieve a low melting point while utilizing the physical properties (hardness, compressive strength, etc.) of each component. Through these low melting point characteristics, the composition of the present invention can replace materials such as lead and cadmium used in the prior art while satisfying temperature and strength conditions suitable for thermal fuses for sprinklers.
또한, 본 발명은 알루미늄 및 바나듐 중 어느 하나 이상을 0.001 ~ 2중량% 더 추가할 수 있다. 본 발명의 조성물에 Al 및/또는 V를 첨가하면, 써멀퓨즈의 경도값과 압축강도값을 높일 수 있다. 본 발명의 조성물에 Al 및/또는 V를 추가하면, 써멀퓨즈의 융점은 약 0.8~1.2도 정도 상승할 것으로 예상되며, Al 및/또는 V를 추가하더라도 목표로 하는 융점인 72±3℃에는 영향을 주지 않기 때문에 물성향상을 위해 의미있는 조성이라고 판단되며, 예상되는 경도값은 9.8 ~ 10.3일 것으로 예상된다. Additionally, in the present invention, 0.001 to 2% by weight of any one or more of aluminum and vanadium may be added. By adding Al and/or V to the composition of the present invention, the hardness value and compressive strength value of the thermal fuse can be increased. When Al and/or V are added to the composition of the present invention, the melting point of the thermal fuse is expected to increase by about 0.8 to 1.2 degrees, and even if Al and/or V are added, the target melting point of 72±3°C is not affected. Because it does not provide any, it is judged to be a meaningful composition for improving physical properties, and the expected hardness value is expected to be 9.8 to 10.3.
이하에서는 실험예를 통하여 본 발명에 대하여 보다 자세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail through experimental examples.
실험예 1 : 밀도 측정Experimental Example 1: Density measurement
비스무트 40.2 중량%, 인듐 42.5 중량%, 주석 17.3 중량%, 은 0.003중량%의 금속 합금 샘플 7개를 제조한 후 밀도를 측정하였다. 그 결과는 아래 표 1과 같다. 평균 밀도는 8.2750 g/cm3이었다.Seven metal alloy samples containing 40.2% by weight of bismuth, 42.5% by weight of indium, 17.3% by weight of tin, and 0.003% by weight of silver were manufactured and their densities were measured. The results are shown in Table 1 below. The average density was 8.2750 g/cm 3 .
밀도 수치가 높을수록 반응열에 의해 용융된 이후 써멀퓨즈의 이탈속도가 빠르기 때문에 밀도가 8g/cm3 이상이 되는 것이 바람직한데, 본 발명의 실시예의 샘플의 경우 평균 밀도 8.275g/cm3 으로서 써멀퓨즈에 사용되기에 적합함을 알 수 있었다.The higher the density value, the faster the separation speed of the thermal fuse after melting due to the heat of reaction, so it is desirable for the density to be 8 g/cm 3 or more. In the case of the sample of the example of the present invention, the average density of the thermal fuse was 8.275 g/cm 3 It was found to be suitable for use.
실험예 2 : 비커스 경도 Experimental Example 2: Vickers hardness
실험예 1의 실시예의 샘플 7개에 대하여 비커스경도를 측정하였다. 써멀퓨즈에 사용되기 위해서는 비커스경도가 중요하며, 7개의 샘플에 대하여 비커스경도를 측정한 결과 평균 9.5였다(실험 시 하중 10g, 압입시간 15초 조건). Vickers hardness was measured for seven samples of Experimental Example 1. Vickers hardness is important for use in thermal fuses, and the average Vickers hardness was 9.5 when measuring the Vickers hardness for 7 samples (under the conditions of a load of 10 g and an indentation time of 15 seconds during the experiment).
스프링클러의 일부 부품으로서의 써멀퓨즈는 물리적으로 다른 부품과 접촉하고 있기 때문에, 일정 경도값 이상을 유지하는 것이 바람직하다. 본 발명의 실시예의 샘플은 평균 9.5의 비커스 경도이며, 이 수치는 종래의 써멀퓨즈와 유사한 수준으로, 조립성에 문제가 없음을 알 수 있었다. Since the thermal fuse, which is a part of a sprinkler, is physically in contact with other parts, it is desirable to maintain a certain hardness value or higher. The sample of the example of the present invention had an average Vickers hardness of 9.5, and this value was similar to that of a conventional thermal fuse, so it was found that there was no problem in assembly.
실험예 3 : 압축강도Experimental Example 3: Compressive strength
도 2는 압축강도 실험 결과이다. 실험예 1와 동일한 조성으로 5개의 샘플을 만든 후 압축강도 실험을 하였다. 본 실예의 5개의 샘플의 평균 항복강도(Yield Strength)는 22.7 MPa, 최대강도(Peak Strength)는 28.2 MPa이었다. Figure 2 shows the results of a compressive strength test. Five samples were made with the same composition as in Experimental Example 1, and then a compressive strength test was performed. The average yield strength of the five samples in this example was 22.7 MPa, and the peak strength was 28.2 MPa.
써멀퓨즈는 스플링클러 내부에 물리적으로 다른 부품과 접촉하고 있고 수압에 의해 일정압을 받고 있기 때문에 압축강도값이 항복강도기준으로 20MPa이상인 것이 바람직한데, 본 발명의 실험예 3과 같이, 본 발명의 실시예에 의해 제조된 써멀퓨즈는 항복강도 22.7 MPa로 종래의 강도값과 유사한 수준을 보여, 적절한 물리적 강도를 보이고 있음을 알 수 있었다. Since the thermal fuse is in physical contact with other parts inside the sprinkler and is under a certain pressure due to water pressure, it is preferable that the compressive strength value is 20 MPa or more based on yield strength. As in Experimental Example 3 of the present invention, The thermal fuse manufactured according to the example showed a yield strength of 22.7 MPa, which was similar to the conventional strength value, showing appropriate physical strength.
실험예 4 : 융점Experimental Example 4: Melting Point
실험예 1과 동일한 조성으로 제조한 써멀퓨즈 샘플 10개에 대하여 융점을 측정한 결과 아래 표 2와 도 3과 같았다. The results of measuring the melting points of 10 thermal fuse samples manufactured with the same composition as in Experimental Example 1 are shown in Table 2 and Figure 3 below.
(℃)(℃)
본 발명의 실시예에 의해 제조되는 합금 조성물은 융점 72℃로서, 스프링클러용 써멀퓨즈에서 요구하는 융점에 만족함을 알 수 있다. It can be seen that the alloy composition manufactured by the example of the present invention has a melting point of 72°C, which satisfies the melting point required for a thermal fuse for sprinklers.
Claims (5)
An alloy composition for a sprinkler thermal fuse comprising bismuth, indium, tin and silver.
In claim 1, the mixing ratio of each component is 35 to 45% by weight of bismuth, 35 to 45% by weight of indium, 10 to 25% by weight of tin, and 0.001 to 5% by weight of silver.
The alloy composition for a sprinkler thermal fuse according to claim 2, comprising 40 to 45% by weight of bismuth, 40 to 45% by weight of indium, 15 to 20% by weight of tin, and 0.001 to 3% by weight of silver.
The alloy composition for a sprinkler thermal fuse according to any one of claims 1 to 3, further comprising an additional component of at least one of aluminum and vanadium.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220082871A KR20240006158A (en) | 2022-07-06 | 2022-07-06 | Metal Composition for a Thermal Fuse of a Sprinkler |
| CN202210955640.2A CN117403122A (en) | 2022-07-06 | 2022-08-10 | Alloy composition for sprinkler thermal fuse |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020220082871A KR20240006158A (en) | 2022-07-06 | 2022-07-06 | Metal Composition for a Thermal Fuse of a Sprinkler |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120084850A (en) | 2011-01-21 | 2012-07-31 | 김교연 | Disk spring type sprinkler head |
| KR20160068223A (en) | 2014-12-05 | 2016-06-15 | 삼성중공업 주식회사 | Sprinkler |
| KR20220022434A (en) | 2020-08-18 | 2022-02-25 | 주식회사 마스테코 | Fusemetal of Sprinkler Head |
-
2022
- 2022-07-06 KR KR1020220082871A patent/KR20240006158A/en not_active Application Discontinuation
- 2022-08-10 CN CN202210955640.2A patent/CN117403122A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120084850A (en) | 2011-01-21 | 2012-07-31 | 김교연 | Disk spring type sprinkler head |
| KR20160068223A (en) | 2014-12-05 | 2016-06-15 | 삼성중공업 주식회사 | Sprinkler |
| KR20220022434A (en) | 2020-08-18 | 2022-02-25 | 주식회사 마스테코 | Fusemetal of Sprinkler Head |
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| CN117403122A (en) | 2024-01-16 |
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