JP5572077B2 - 冷間圧延方法 - Google Patents
冷間圧延方法 Download PDFInfo
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- JP5572077B2 JP5572077B2 JP2010270827A JP2010270827A JP5572077B2 JP 5572077 B2 JP5572077 B2 JP 5572077B2 JP 2010270827 A JP2010270827 A JP 2010270827A JP 2010270827 A JP2010270827 A JP 2010270827A JP 5572077 B2 JP5572077 B2 JP 5572077B2
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Description
下記の各成分を所定量で配合して、実施例の金属圧延油組成物を調整した。比較例の金属圧延油組成物として、ユシロ化学工業株式会社製「ユシローブル100TF−2」を用いた。各成分の内容及び配合量を以下に示す。配合量の「%」は「質量%」である。
界面活性剤A(1.0%):商品名「イオネットS−80」、三洋化成工業株式会社、ソルビタン脂肪酸エステル系界面活性剤
界面活性剤B(0.3%):商品名「イオネットDO−1000」、三洋化成工業株式会社、ポリオキシエチレン脂肪酸ジエステル
界面活性剤C(0.5%):商品名「ハイパーマーA60」、クローダジャパン株式会社、マレイン化ポリブテン、ポリアルキレングリコール、及びグリセリンの共重合物
酸化防止剤(1.0%):商品名「スミライザーBHT」、住友化学株式会社
防食剤(0.1%):商品名「BT−120」 城北化学工業株式会社、1,2,3−ベンゾトリアゾール
エラストマーA(0.2%):天然ゴム(cis−1,4−ポリイソプレン主体、重量平均分子量10万〜250万)
冷間圧延加工の概略を図1に示す。図1の冷間圧延機は、5個の圧延スタンド7(第1スタンド71〜第5スタンド75)からなり、各圧延スタンド7は上下ワークロール及び上下バックアップロールを有する。循環圧延油供給方式にて、各圧延スタンド7の入側圧延ロール(ロールバイト及びワークロール表面)及び出側圧延ロール表面に上記で調製した各クーラントを供給して冷間圧延加工を行った。金属材料として、軟質鋼板A〜C(板厚:3.8mm(入側)、0.715mm(出側)、圧下率81%、板幅:1780mm)を用いた。上記クーラントの温度は50〜70度である。上記クーラントの供給量は、各圧延スタンドで約3000〜5000L/minである。各圧延スタンドの圧下率割合、合計圧下率及び圧延速度を表1に示す。
図1の冷間圧延機を用いて、上記各クーラントを用いて鋼板の冷間圧延加工を半年間(稼働期間)行った。その後、加工鋼板の生産量と金属圧延油組成物の使用量から、稼働期間中の原単位(鋼板の生産量1t当たりに使用した金属圧延油組成物の使用量;kg/ton)を算出した。また、稼働期間中の異常組替比率(鋼板の生産量1000t当たりについて、ロール疵の発生のため圧延ロールの組替を行った回数;回/1000t)及び稼働率(実働時間/(勤務時間−休止時間))を算出した。
Claims (6)
- 基油、界面活性剤及びエラストマーを含む金属圧延油組成物又はその分散物を用いて、被圧延材を冷間圧延加工する冷間圧延方法であって、
前記基油は、脂肪酸及び合成脂肪酸の少なくとも一方と、エチレングリコール、ネオペンチルグリコール、トリメチロールプロパン及びペンタエリスリトールから選ばれる多価アルコールとの合成エステルであり、
前記界面活性剤は、高級脂肪酸とポリエチレングリコール、グリセリン及びソルビトールから選ばれる多価アルコールの少なくとも1種とのモノエステル又はポリエステル、並びに変性ポリアルケンとポリアルキレングリコールとグリセリンとの共重合物の少なくとも一方であり、
前記界面活性剤の含有量は、前記基油100質量部に対して1〜6質量部であり、
前記エラストマーは、天然ゴム、ウレタンゴム、シリコーンゴム及びフッ素ゴムから選ばれる熱硬化性エラストマーであり、
前記エラストマーの含有量は、前記基油100質量部に対して0.1〜5質量部である冷間圧延方法。 - 前記基油はトリメチロールプロパントリオレートである請求項1記載の冷間圧延方法。
- 前記界面活性剤は、ソルビタン脂肪酸エステル系界面活性剤、ポリオキシエチレン脂肪酸ジエステル、並びにマレイン化ポリブテン、ポリアルキレングリコール及びグリセリンの共重合物である請求項2記載の冷間圧延方法。
- 前記エラストマーは天然ゴムである請求項3記載の冷間圧延方法。
- 2以上の圧延スタンドを備える冷間タンデムミルを用い、1以上の上記圧延スタンド及び/又は被圧延材に、上記金属圧延油組成物又はその分散物を供給する請求項1乃至4のいずれかに記載の冷間圧延方法。
- 上記被圧延材は、引張強度が500MPa以上の金属材料である請求項1乃至5のいずれかに記載の冷間圧延方法。
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