JP2021155831A - 鋼部品の製造方法 - Google Patents
鋼部品の製造方法 Download PDFInfo
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- JP2021155831A JP2021155831A JP2020059869A JP2020059869A JP2021155831A JP 2021155831 A JP2021155831 A JP 2021155831A JP 2020059869 A JP2020059869 A JP 2020059869A JP 2020059869 A JP2020059869 A JP 2020059869A JP 2021155831 A JP2021155831 A JP 2021155831A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 104
- 239000010959 steel Substances 0.000 title claims abstract description 104
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 100
- 238000001816 cooling Methods 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 11
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 239000011651 chromium Substances 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 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
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract description 6
- 230000006698 induction Effects 0.000 description 40
- 238000010791 quenching Methods 0.000 description 30
- 230000000171 quenching effect Effects 0.000 description 27
- 238000005255 carburizing Methods 0.000 description 14
- 239000002344 surface layer Substances 0.000 description 10
- 230000006837 decompression Effects 0.000 description 5
- 238000005496 tempering Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 229910001567 cementite Inorganic materials 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000009661 fatigue test Methods 0.000 description 4
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 4
- 229910001562 pearlite Inorganic materials 0.000 description 4
- 239000010955 niobium Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005480 shot peening Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
Claims (4)
- 素材鋼から鋼部品を製造する鋼部品の製造方法において、
前記鋼部品の外周面およびその近傍におけるC濃度が前記素材鋼のC濃度よりも高い1.1質量%超かつ1.5質量%以下になるように前記素材鋼からなるワークに浸炭処理を施し、
前記ワークのオーステナイト組織をマルテンサイト変態させる臨界冷却速度未満の冷却速度で前記ワークを冷却し、
内部温度が予め定められた目標温度になるように管理された加熱炉内で前記ワークを加熱した後、前記臨界冷却速度以上の冷却速度で前記ワークを冷却する鋼部品の製造方法。 - 請求項1に記載の鋼部品の製造方法において、前記加熱炉の前記内部温度を前記目標温度±5℃の範囲内に維持する鋼部品の製造方法。
- 請求項1または2に記載の鋼部品の製造方法において、前記目標温度を770−820℃の範囲内に定める鋼部品の製造方法。
- 請求項1から3の何れか一項に記載の鋼部品の製造方法において、
前記素材鋼は、0.15質量%以上かつ0.25質量%以下のC(炭素)、0.90質量%以上かつ3.00質量%以下のSi(ケイ素)、0.70質量%以上かつ1.10質量%以下のMn(マンガン)、0.03質量%以下のP(リン)、0.100質量%以下のS(硫黄)、0.01質量%以上かつ0.50質量%以下のCu(銅)、0.01質量%以上かつ0.50質量%以下のNi(ニッケル)、0.20質量%以上かつ0.50質量%以下のCr(クロム)、0.50質量%以下のMo(モリブデン)、0.30質量%以下のAl(アルミニウム)、0.05質量%以下のN(窒素)、Fe、および不可避不純物を含み、Siの含有質量%を[Si]とし、Niの含有質量%を[Ni]とし、Cuの含有質量%を[Cu]とし、Crの含有質量%を[Cr]としたときに、
[Si]+[Ni]+[Cu]−[Cr]>0.5
を満たす鋼部品の製造方法。
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JP2020059869A JP2021155831A (ja) | 2020-03-30 | 2020-03-30 | 鋼部品の製造方法 |
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