JP2018104750A - 球状黒鉛鋳鉄管、および、球状黒鉛鋳鉄管の製造方法 - Google Patents
球状黒鉛鋳鉄管、および、球状黒鉛鋳鉄管の製造方法 Download PDFInfo
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- JP2018104750A JP2018104750A JP2016251094A JP2016251094A JP2018104750A JP 2018104750 A JP2018104750 A JP 2018104750A JP 2016251094 A JP2016251094 A JP 2016251094A JP 2016251094 A JP2016251094 A JP 2016251094A JP 2018104750 A JP2018104750 A JP 2018104750A
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- Prior art keywords
- cast iron
- graphite cast
- spheroidal graphite
- iron tube
- iron pipe
- Prior art date
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- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229910001562 pearlite Inorganic materials 0.000 claims abstract description 18
- 229910001567 cementite Inorganic materials 0.000 claims abstract description 14
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 238000000137 annealing Methods 0.000 claims description 13
- 229910002804 graphite Inorganic materials 0.000 claims description 13
- 239000010439 graphite Substances 0.000 claims description 13
- 239000002054 inoculum Substances 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 229910017082 Fe-Si Inorganic materials 0.000 claims description 4
- 229910017133 Fe—Si Inorganic materials 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000010304 firing Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 230000009466 transformation Effects 0.000 description 9
- 238000012545 processing Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 229910052748 manganese Inorganic materials 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 229910000734 martensite Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 3
- 238000009750 centrifugal casting Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000274847 Betula papyrifera Species 0.000 description 1
- 235000009113 Betula papyrifera Nutrition 0.000 description 1
- 235000009109 Betula pendula Nutrition 0.000 description 1
- 235000010928 Betula populifolia Nutrition 0.000 description 1
- 235000002992 Betula pubescens Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
(焼鈍条件)
・加熱温度 :900〜1100℃
・加熱保持時間:5〜30分
・冷却速度 :1〜8℃/分
(試験条件)
・試験温度 :常温(30℃)、200℃、300℃、400℃、500℃(5水準)
・荷重 :20kg
・時間 :30秒間
・圧子 :ダイヤモンド
・雰囲気ガス:アルゴン
Claims (4)
- 重量%で、C:3.20〜4.00%、Si:1.40〜3.00%、Mg:0.02〜0.08%、Cr:0.01〜0.20%を含有し、さらにMn:1.20〜1.70%、Cu:0.60〜1.20%となる範囲で含有し、残部がFeおよび不可避的不純物からなり、焼鈍後の基地組織におけるパーライトの面積率が80%以上であり、未分解のセメンタイトの面積率が10〜15%の範囲内である球状黒鉛鋳鉄管。
- 基地組織中に晶出している黒鉛が微細化された請求項1に記載の球状黒鉛鋳鉄管。
- 重量%で、C:3.20〜4.00%、Si:1.40〜3.00%、Mg:0.02〜0.08%、Cr:0.01〜0.20%を含有し、さらにMn:1.20〜1.70%、Cu:0.60〜1.20%となる範囲で含有し、残部がFeおよび不可避的不純物からなる溶湯を用いて、冷却速度2.0〜8.0℃/秒で所定形状の半製品を鋳造し、前記半製品を900〜1100℃の温度範囲内で5〜30分保持した後、1〜8℃/分の冷却速度で冷却する球状黒鉛鋳鉄管の製造方法。
- 前記溶湯を金型に注湯する際に、Siが45〜75重量%含まれたFe−Si系接種剤を0.1〜0.5重量%注湯流接種する請求項3に記載の球状黒鉛鋳鉄管の製造方法。
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Cited By (1)
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KR20230079896A (ko) * | 2021-11-29 | 2023-06-07 | 한국생산기술연구원 | 구상 흑연 주철의 제조 방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009001841A1 (ja) * | 2007-06-26 | 2008-12-31 | Incorporated National University Iwate University | 片状黒鉛鋳鉄およびその製造方法 |
JP2013117045A (ja) * | 2011-12-02 | 2013-06-13 | Akebono Brake Ind Co Ltd | 薄肉球状黒鉛鋳鉄部材 |
WO2013122248A1 (ja) * | 2012-02-17 | 2013-08-22 | 本田技研工業株式会社 | 鋳鉄およびブレーキ部品 |
JP2015183191A (ja) * | 2014-03-20 | 2015-10-22 | 株式会社栗本鐵工所 | 球状黒鉛鋳鉄管、及び球状黒鉛鋳鉄管の製造方法 |
JP2015183198A (ja) * | 2014-03-20 | 2015-10-22 | 株式会社栗本鐵工所 | 球状黒鉛鋳鉄、及び球状黒鉛鋳鉄の製造方法 |
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009001841A1 (ja) * | 2007-06-26 | 2008-12-31 | Incorporated National University Iwate University | 片状黒鉛鋳鉄およびその製造方法 |
US20100239451A1 (en) * | 2007-06-26 | 2010-09-23 | Incorporated National University Iwate University | Flake Graphite Cast Iron And Production Method Thereof |
JP2013117045A (ja) * | 2011-12-02 | 2013-06-13 | Akebono Brake Ind Co Ltd | 薄肉球状黒鉛鋳鉄部材 |
WO2013122248A1 (ja) * | 2012-02-17 | 2013-08-22 | 本田技研工業株式会社 | 鋳鉄およびブレーキ部品 |
CN104114728A (zh) * | 2012-02-17 | 2014-10-22 | 本田技研工业株式会社 | 铸铁和制动部件 |
JP2015183191A (ja) * | 2014-03-20 | 2015-10-22 | 株式会社栗本鐵工所 | 球状黒鉛鋳鉄管、及び球状黒鉛鋳鉄管の製造方法 |
JP2015183198A (ja) * | 2014-03-20 | 2015-10-22 | 株式会社栗本鐵工所 | 球状黒鉛鋳鉄、及び球状黒鉛鋳鉄の製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230079896A (ko) * | 2021-11-29 | 2023-06-07 | 한국생산기술연구원 | 구상 흑연 주철의 제조 방법 |
KR102608392B1 (ko) * | 2021-11-29 | 2023-12-01 | 한국생산기술연구원 | 구상 흑연 주철의 제조 방법 |
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