JP5517382B1 - 熱処理装置および熱処理方法 - Google Patents
熱処理装置および熱処理方法 Download PDFInfo
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- JP5517382B1 JP5517382B1 JP2013540930A JP2013540930A JP5517382B1 JP 5517382 B1 JP5517382 B1 JP 5517382B1 JP 2013540930 A JP2013540930 A JP 2013540930A JP 2013540930 A JP2013540930 A JP 2013540930A JP 5517382 B1 JP5517382 B1 JP 5517382B1
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Abstract
熱処理炉は炉内構造物がグラファイトで製造され、被処理材料を熱処理する加熱処理室を有しており、各センサからのセンサ情報を参照してΔG0(標準生成ギブスエネルギー)を演算し、表示装置331にエリンガム図と管理範囲及びΔG0で表される運転中の熱処理炉の状態を表示するとともに、ΔG0が管理範囲内に入るように、制御部334により雰囲気ガスとしての中性ガス又は不活性ガスの流量またはガスの流速を制御する。
Description
長手方向の複数箇所に、前記標準生成ギブスエネルギーを算出するために熱処理中の状態を検知する各センサとを備え、複数の前記各センサからの各信号を参照して前記各箇所における前記標準生成ギブスエネルギーを算出し、算出した値が管理範囲内に入るように前記搬送機構により搬送速度を制御するか、前記中性ガス又は不活性ガスの流量またはガスの流速を制御するように構成してもよい。
熱処理中の状態を検知する各センサからのセンサ情報を参照し前記熱処理炉内雰囲気ガスの2C+O 2 =2COの反応における標準生成ギブスエネルギーを算出し、前記標準生成ギブスエネルギーを、前記熱処理炉の温度に対応してエリンガム図上に表示する為の表示データとして生成する構成であってもよい。
1)可爆性の無い不活性雰囲気で処理できるので安全である。
2)中性ガス、不活性ガス中で熱処理するため、被処理材料の浸炭・脱炭現象が生じない。
3)炉圧を常圧稼働できるので、処理金属の蒸発を真空法よりも抑えることができる。
4)熱処理炉の酸素分圧を極低圧に保持できるので、極めて難還元性の金属酸化物を熱解離させ、金属を無酸素状態で取り扱うことができる。
[CO−O2間反応]
2C+O2=2CO ……(2)
ΔG0(1)=−229810+171.5T (J・mol−1) ……(3)
ΔG0=RTlnP(O2)=ΔG0(1)−2RTlnP(CO) ……(4)
12 脱湿器
13 ガス混合器
14 炭化水素ガス供給器
15 加熱機能付ガス変成装置
16 ガス急冷・除湿装置
17 光輝焼鈍炉
18 酸素分圧計
19 カーボンポテンシャル演算制御器
21 加熱室
22 酸素分析装置
23 一酸化炭素分析装置
24 酸素分圧設定部
25 一酸化炭素分圧設定部
31 熱処理炉
311 温度センサ
312 酸素センサ
313 COセンサ
315 ガスサンプリング装置
316 ヒータ
317 被処理材料
32 ガス供給装置
321 流量調整バルブ
322 流量計
323 出力ガスセンサ
33 制御システム
331 表示装置
332 入力装置
333 演算処理装置
334 制御部
335 熱処理用データベース
34 端末装置
35,36 通信回線
41 外壁
41a 金属製の外壁
41b グラファイト断熱材
42 グラファイトアウターマッフル
43 グラファイトインナーマッフル
44 メッシュベルト
45 グラファイトヒータ
46 ブッシュ
47 ヒータボックス
48 金属製の板材
49 ガス供給開放口
410 加熱処理室
61 酸素分圧演算部
62 CO分圧演算部
63 ΔG0(標準生成ギブスエネルギー)演算部
64 表示データ生成部
65 状態監視&異常処理部
66 センサI/F
101 被処理材料ファイル
102 プロセス制御ファイル
103 管理範囲ファイル
104 運転記録ファイル
1041 ログデータファイル
1042 事故データファイル
Claims (11)
- 被処理材料を熱処理する熱処理炉と、この熱処理炉に中性ガス又は不活性ガスからなる雰囲気ガスを供給するガス供給装置と、熱処理中の状態を検知する各センサからのセンサ情報を参照して前記ガス供給装置からの流量制御を行う制御システムを有する熱処理装置であって、
前記熱処理炉は炉内構造物がグラファイトで製造され、
前記センサからの情報を参照し、前記熱処理炉内雰囲気ガスの2C+O 2 =2COの反応における標準生成ギブスエネルギーを算出する標準生成ギブスエネルギー演算部と、
前記標準生成ギブスエネルギーを前記熱処理炉の温度に対応してエリンガム図上に表示する為の表示データとして生成する表示データ生成部と、を備える熱処理装置。 - 前記中性ガス又は不活性ガスが、窒素ガス、アルゴンガス、ヘリウムガスのいずれかである請求項1記載の熱処理装置。
- 前記被処理材料が、炭素鋼、合金元素を含む鋼、ニッケル(Ni)、クロム(Cr)、チタン(Ti)、シリコン(Si)、銅(Cu)の各種金属及び合金のうち少なくとも1つであることを特徴とする請求項1又は請求項2記載の熱処理装置。
- 前記熱処理が、光輝処理、調質処理、焼入/焼戻処理、ろう付け、焼結の少なくとも1つであることを特徴とする請求項1乃至請求項3のいずれか1項に記載の熱処理装置。
- 前記標準生成ギブスエネルギーの時間変化から、前記被処理材料の還元終了時刻を算出することを特徴とする請求項1乃至請求項4のいずれか1項に記載の熱処理装置。
- 複数の前記被処理材料を前記熱処理炉の長手方向に順次搬送する搬送機構と、
長手方向の複数箇所に、前記標準生成ギブスエネルギーを算出するために熱処理中の状態を検知する各センサと、を備え、
複数の前記各センサからの各信号を参照して前記各箇所における前記標準生成ギブスエネルギーを算出し、算出した値が管理範囲内に入るように前記搬送機構により搬送速度を制御するか、前記中性ガス又は不活性ガスの流量またはガスの流速を制御することを特徴とする請求項1乃至請求項3のいずれか1項に記載の熱処理装置。 - 前記表示データ生成部は、前記エリンガム図における前記熱処理炉の管理範囲を含む前記表示データを生成する請求項1乃至請求項6のいずれか1項に記載の熱処理装置。
- 前記標準生成ギブスエネルギー演算部は、酸素分圧、一酸化炭素分圧のうちのいずれかの情報、又は両方の情報を用いて演算することにより前記標準生成ギブスエネルギーを算出する請求項1乃至請求項7のいずれか1項に記載の熱処理装置。
- 前記被処理材料のプロセス情報、前記熱処理装置の運転に関するログ情報、事故情報の少なくとも一つを記録する熱処理用データベースを備える請求項1乃至請求項8のいずれか1項に記載の熱処理装置。
- 前記被処理材料の状態が順次遷移していく場合、前記被処理材料のロット番号を指定すると、前記被処理材料が遷移する前記炉内の位置の温度と雰囲気ガスの状態とを参照して、指定された前記被処理材料がエリンガム図のどの状態にあるのかの情報を順次、前記熱処理装置を構成する表示装置の同一画面又は複数の画面上に表示する請求項1乃至請求項9のいずれか1項に記載の熱処理装置。
- 熱処理炉内に設けた加熱処理室内で被処理材料を熱処理する熱処理方法であって、
前記熱処理炉の炉内構造物はグラファイトで製造され、
前記熱処理炉に中性ガス又は不活性ガスからなる雰囲気ガスを供給し、
熱処理中の状態を検知する各センサからのセンサ情報を参照して前記熱処理炉内雰囲気ガスの2C+O 2 =2COの反応における標準生成ギブスエネルギーを算出し、
前記標準生成ギブスエネルギーを、前記熱処理炉の温度に対応してエリンガム図上に表示する為の表示データとして生成する熱処理方法。
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WO2017191039A1 (fr) * | 2016-05-02 | 2017-11-09 | Cockerill Maintenance & Ingenierie S.A. | Contrôle en temps réel du chauffage d'une pièce par un four siderurgique ou un four de traitement thermique |
EP3241916A1 (fr) * | 2016-05-02 | 2017-11-08 | Cockerill Maintenance & Ingenierie S.A. | Contrôle en temps réel du chauffage d'une pièce par un four siderurgique ou un four de traitement thermique |
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US11858041B2 (en) | 2019-01-15 | 2024-01-02 | Hewlett-Packard Development Company, L.P. | Electrical measurement of a green object during sintering |
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