CN85100659A - 一种铁铬铝合金释压螺栓 - Google Patents
一种铁铬铝合金释压螺栓 Download PDFInfo
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- CN85100659A CN85100659A CN198585100659A CN85100659A CN85100659A CN 85100659 A CN85100659 A CN 85100659A CN 198585100659 A CN198585100659 A CN 198585100659A CN 85100659 A CN85100659 A CN 85100659A CN 85100659 A CN85100659 A CN 85100659A
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- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 title abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims abstract 2
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000000137 annealing Methods 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 1
- 230000033228 biological regulation Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 1
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
一种铁铬铝合金释压螺栓，它采用传统的电热材料——铁铬铝合金制成，有效地利用合金的机械强度和再结晶脆性。合金采用真空感应炉熔炼和热锻、轧制工艺，再机加工成型，成型后采用1300℃、保温1～2小时的高温再结晶退火处理，使之得到脆性的大晶粒铁素体组织。本发明所提供的释压螺栓屈强比可达到0.9以上，用它装配的释压阀具有良好的抗蚀性能、动作灵敏、准确可靠，可确保空气压缩机系统的安全运行。
Description
本发明是铁铬铝电热合金的一种新用途发明，也是对空气压缩机系统的安全保护装置及其部件制造方法的改进。
释压螺栓是活塞式释压阀的关键部件，为了确保空气压缩机系统上的释压阀能够准确启动，释压螺栓必须是在正常压力下无永久范性形变，而当压力达到额定值时，立即断裂。因此，该螺栓必须由脆性材料制成，即要求屈服极限和强度极限之比（简称屈强比）尽可能地接近于1。释压螺栓过去是采用碳素结构钢（如A3钢）和不锈钢（如2cr13）等材料，碳素结构钢螺栓容易生锈变质;而不锈钢易于范性形变，其屈强比很难超过0.75。用这些材料制成的释压螺栓，其性能均无法满足活塞式释压阀的技术要求。
本发明的目的是提供一种供活塞式释压阀使用的不锈蚀、在正常工作状态下不变形，并且有高脆断性能的释压螺栓，它采用铁铬铝合金制成。铁铬铝合金过去一直是作为电热材料来使用，其抗高温氧化性能和电热特能以往研究得比较多，虽然过去人们也知道，经过使用后（高温加热再结晶）的铁铬铝电热丝很脆，但很少有人研究和利用它的力学性能。
本发明所提供的铁铬铝合金的成份范围如下（各组分均用重量百分比计）：
铬 铝 碳 硅 锰 磷 硫
15～40 3.0～10.0 0.05～0.15 0.4～0.7 0.3～0.8 ≤0.03 ≤0.03
合金采用真空感应炉熔炼，熔炼后，经过锻造、轧制等热加工成材，再经机加工成型。成型后经过高温再结晶处理，再结晶处理工艺为1300℃，保温1～2小时，使之得到大晶粒铁素体组织。经大量测试，按上述工艺制成的铁铬铝合金试样，其强度极限为45千克力/毫米2，延伸率和面缩率均不超过0.5%，同一批试样的强度极限值其波动范围在±5%以内。因此，用本发明所提供的铁铬铝合金释压螺栓其屈强比在0.9以上，成为活塞式释压阀目前最理想的释压螺栓。用本发明所提供的释压螺栓所装配的活塞式释压阀完全符合《煤矿安全规程》第389条。规定和执行说明83款规定的技术指标，具有良好的抗蚀性能，动作灵敏，准确可靠，能有效地防止空气压缩机系统的爆炸，它不仅可以使用在煤矿空气压缩机系统上，还可以用在其它工业的空气压缩机系统上。
Claims (1)
- 一种释压螺栓，其特征在于它由铁铬铝合金制成，该合金的主要成份(按重量百分比计)为：铬15～40、铝3～10、铁余量。螺栓制成后，再经过1300℃、保温1～2小时的高温再结晶处理。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585100659A CN85100659A (zh) | 1985-04-01 | 1985-04-01 | 一种铁铬铝合金释压螺栓 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585100659A CN85100659A (zh) | 1985-04-01 | 1985-04-01 | 一种铁铬铝合金释压螺栓 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85100659A true CN85100659A (zh) | 1986-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585100659A Pending CN85100659A (zh) | 1985-04-01 | 1985-04-01 | 一种铁铬铝合金释压螺栓 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100659A (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725972A (zh) * | 2014-01-13 | 2014-04-16 | 盐城市鑫洋电热材料有限公司 | 低碳多元高电阻电热合金及其制备方法 |
| CN107723617A (zh) * | 2017-09-15 | 2018-02-23 | 大连理工大学 | 一种具有1200°C/1h短时高温组织稳定的Fe‑Cr‑Al基铁素体不锈钢 |
-
1985
- 1985-04-01 CN CN198585100659A patent/CN85100659A/zh active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725972A (zh) * | 2014-01-13 | 2014-04-16 | 盐城市鑫洋电热材料有限公司 | 低碳多元高电阻电热合金及其制备方法 |
| CN107723617A (zh) * | 2017-09-15 | 2018-02-23 | 大连理工大学 | 一种具有1200°C/1h短时高温组织稳定的Fe‑Cr‑Al基铁素体不锈钢 |
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