CN112455031A - 炼钢转炉氧枪吹氧胶管制作方法 - Google Patents
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Abstract
本发明提供炼钢转炉氧枪吹氧胶管制作方法,本发明这种炼钢转炉氧枪吹氧胶管制作方法通过添加改性材料吸收渗透入橡胶中的水分,避免主体材料因为吸水导致的水解变色而造成的老化,从而提高输水橡胶管耐水性能,延长冷却机组橡胶管寿命,通过纤维层包覆来增强橡胶管,减少外胶管层弯折时的损伤。针对橡胶管中防腐高分子内衬膜难以与胶管体紧密连接,容易脱落使防腐效果不佳,并且橡胶管内层输送热流体时橡胶管容易发生不可逆变形,解决了不耐弯折不易于施工的问题。
Description
技术领域
本发明属于橡胶的技术领域,具体涉及炼钢转炉氧枪吹氧胶管制作方法。
背景技术
在现代钢铁生产中,为强化冶炼提高生产率,普遍采用向炉内吹氧的技术,气输送氧气的碳素钢管为吹氧管。所述吹氧管为一空心薄壁钢管,是冶金行业中一种常用 的器具,其内部介质一般为氧气,故称之为“吹氧管”。利用吹氧管可向炉内钢水吹入 氧气进行富氧作业,或者利用钢水或刚结晶的钢壳作为引燃物,以其钢管自身作为燃烧体进行自燃对钢壳进行吹烧作业,以达到特定的冶炼工艺要求。
无论是使用吹氧管进行富氧作业或者是进行吹烧作业,都需要氧气配合使用,因此吹氧管要和氧气输送管道进行连接。现有的吹氧管连接方式,一般采用皮管作为连接体对吹氧管和氧气流量调节阀的气管接头进行连接。
对于该种吹氧管连接装置,皮管首先作为连接体连接吹氧管和流量调节阀, 其次,由于皮管是柔性的,通过外部的抱箍的收紧可以有效的进行连接处密封,因此,皮管又可作为密封体对吹氧管、流量调节阀上的皮管接头进行密封。
现有的吹氧胶管,主要以市场上出售的普通输、吸水胶管来代替。它由内胶层、增强层、骨架层、中胶层、外胶层所组成。连接在转炉氧枪与氧源之间,悬吊于转炉的上方,当转炉工作时,胶管随氧枪下降,其氧枪的端部从转炉的上口处通入炉内,高压吹送氧气。当转炉停止工作时,胶管随氧枪升起,悬吊于转炉的上方。但是,这种胶管在使用过程中有这样的问题:它的增强层均采用以棉织物擦胶为主要材料,分别粘结在内胶层与骨架层之间和中胶层与外胶层之间,因此,耐压强度较低,工作压力超过10kg/cm2就易爆破或损坏,管体需经常作机械运动,弯曲疲劳性能也很差。该胶管还因两端没有法兰接头,因而固定困难。再说转炉炼钢与出钢时其辐射温度经常高达250℃以上,现有的胶管既不抗氧、不耐热、不耐燃,工作中又不安全,需经常更换,很不方便,寿命短,影响工作效率或炼钢质量。因此,该胶管代替吹氧胶管使用缺点很多。
发明内容
本发明要解决的技术问题是提供一种针对橡胶管中防腐高分子内衬膜难以与胶管体紧密连接,容易脱落使防腐效果不佳,并且橡胶管内层输送热流体时橡胶管容易发生不可逆变形,解决了不耐弯折不易于施工的缺陷的炼钢转炉氧枪吹氧胶管制作方法。
为了解决上述技术问题,本发明通过下述技术方案得以解决:
本发明提供炼钢转炉氧枪吹氧胶管制作方法,包括吹氧胶管本体,所述吹氧胶管本体包括内胶层、增强层、骨架层、中胶层和外胶层,在所述吹氧胶管本体两端的法兰接头的外沟槽表面上由内向外顺序布置内胶层、增强层、端部加固层、端部胶片、增强层、端部补强层、端部加固层、端部胶片、骨架层、中胶层、增强层和外胶层,并经硫化成型为一体。
上述的炼钢转炉氧枪吹氧胶管制作方法,所述法兰接头用厚金属板和厚壁金属管加工制成,组装嵌固,喷砂除垢,与内胶层的端部内表面相粘接,所述端部加固层用纤维丝密缠而成,所述骨架层螺旋状纤维丝,所述增强层和端部补强层采用帘布贴胶,所述增强层采用棉织物擦胶。
上述的炼钢转炉氧枪吹氧胶管制作方法,所述内胶层包括三元乙丙橡胶、炭黑、石蜡油、分散剂、硬脂酸锌、防老剂、过氧化物,具体组分含量以重量百分比计为:三元乙丙橡胶70~100份、炭黑50~60份、石蜡油5~10份、分散剂4~7份、硬脂酸锌1~3份、防老剂0.5~1.5份、氧化锌3~5份、凡士林3~5份、过氧化物2~5份、促进剂CZ1~2份。
上述的炼钢转炉氧枪吹氧胶管制作方法,所述三元乙丙橡胶100份、炭黑60份、石蜡油6份、分散剂5份、硬脂酸锌2份、防老剂1份、氧化锌3份、凡士林5份、过氧化物3份、促进剂CZ1份。
上述的炼钢转炉氧枪吹氧胶管制作方法,所述制作方法包括以下步骤:
步骤A,采用二段混炼;
步骤B,将骨架层及外胶层直接在压出的内胶管上成型,同时为保证胶管在硫化过程中处于受压状态,在成型后包水扎布;
步骤C,采用硫化罐直接蒸汽加热连续硫化,硫化温度设置150~160℃,压力为0.45~0.55Mpa。
上述的炼钢转炉氧枪吹氧胶管制作方法,所述步骤A包括:
步骤A1,投料温度控制在80±5℃,先加入三元乙丙橡胶、炭黑、石蜡油后混炼300~500秒,排料温度控制在170±5℃;
步骤A2,投料温度控制在60±5摄氏度,加入硬脂酸锌、防老剂,当温度上升至80℃时,加入过氧化物,混炼时间为150~200秒。
上述的炼钢转炉氧枪吹氧胶管制作方法,所述步骤B包括法兰接头表面处理:
步骤B1,喷砂后用丙酮等净化处理,涂刷胶黏剂;
步骤B2,埋置静电导线。
上述的炼钢转炉氧枪吹氧胶管制作方法,还包括步骤D,胶管内壁用洗涤剂清水清洗,清洗后用风吹干,两端法兰加盖堵头,胶管外采用聚丙烯编织带或布缠包。
本发明这种炼钢转炉氧枪吹氧胶管制作方法通过添加改性材料吸收渗透入橡胶中的水分,避免主体材料因为吸水导致的水解变色而造成的老化,从而提高输水橡胶管耐水性能,延长冷却机组橡胶管寿命,通过纤维层包覆来增强橡胶管,减少外胶管层弯折时的损伤。针对橡胶管中防腐高分子内衬膜难以与胶管体紧密连接,容易脱落使防腐效果不佳,并且橡胶管内层输送热流体时橡胶管容易发生不可逆变形,解决了不耐弯折不易于施工。
具体实施方式
以下将对本发明各实施例的技术方案进行清楚、完整的描述,显然,所描述的实施例仅仅是本发明的一部分实施例,而不是全部实施例。基于本发明中所述的实施例,本领域普通技术人员在不需要创造性劳动的 前提下所得到的所有其它实施例,都在本发明所保护的范围内。
本发明提供炼钢转炉氧枪吹氧胶管制作方法,包括吹氧胶管本体,所述吹氧胶管本体包括内胶层、增强层、骨架层、中胶层和外胶层,在所述吹氧胶管本体两端的法兰接头的外沟槽表面上由内向外顺序布置内胶层、增强层、端部加固层、端部胶片、增强层、端部补强层、端部加固层、端部胶片、骨架层、中胶层、增强层和外胶层,并经硫化成型为一体。
进一步地,本发明炼钢转炉氧枪吹氧胶管制作方法的较佳实施例中,所述法兰接头用厚金属板和厚壁金属管加工制成,组装嵌固,喷砂除垢,与内胶层的端部内表面相粘接,所述端部加固层用纤维丝密缠而成,所述骨架层螺旋状纤维丝,所述增强层和端部补强层采用帘布贴胶,所述增强层采用棉织物擦胶。
进一步地,本发明炼钢转炉氧枪吹氧胶管制作方法的较佳实施例中,所述内胶层包括三元乙丙橡胶、炭黑、石蜡油、分散剂、硬脂酸锌、防老剂、过氧化物,具体组分含量以重量百分比计为:三元乙丙橡胶70~100份、炭黑50~60份、石蜡油5~10份、分散剂4~7份、硬脂酸锌1~3份、防老剂0.5~1.5份、氧化锌3~5份、凡士林3~5份、过氧化物2~5份、促进剂CZ1~2份。
进一步地,本发明炼钢转炉氧枪吹氧胶管制作方法的较佳实施例中,所述三元乙丙橡胶100份、炭黑60份、石蜡油6份、分散剂5份、硬脂酸锌2份、防老剂1份、氧化锌3份、凡士林5份、过氧化物3份、促进剂CZ1份。
进一步地,本发明炼钢转炉氧枪吹氧胶管制作方法的较佳实施例中,所述制作方法包括以下步骤:
步骤A,采用二段混炼;
步骤B,将骨架层及外胶层直接在压出的内胶管上成型,同时为保证胶管在硫化过程中处于受压状态,在成型后包水扎布;
步骤C,采用硫化罐直接蒸汽加热连续硫化,硫化温度设置150~160℃,压力为0.45~0.55Mpa。
进一步地,本发明炼钢转炉氧枪吹氧胶管制作方法的较佳实施例中,所述步骤A包括:
步骤A1,投料温度控制在80±5℃,先加入三元乙丙橡胶、炭黑、石蜡油氧化锌后混炼300~500秒,排料温度控制在170±5℃;
步骤A2,投料温度控制在60±5摄氏度,加入硬脂酸锌、凡士林、炭黑、促进剂CZ和防老剂,当温度上升至80℃时,加入过氧化物,混炼时间为150~200秒。
进一步地,本发明炼钢转炉氧枪吹氧胶管制作方法的较佳实施例中,所述步骤B包括法兰接头表面处理:
步骤B1,喷砂后用丙酮等净化处理,涂刷胶黏剂;先涂CH205后涂CH220,每遍常温干燥30~40分钟,
步骤B2,埋置静电导线,导线端头链接在管接头支钉螺丝上,与螺旋钢丝链接。
所述步骤B还包括管端到管体1.4-1.6米为光平面,增加2-3道水布。
进一步地,本发明炼钢转炉氧枪吹氧胶管制作方法的较佳实施例中,还包括步骤D,胶管内壁用洗涤剂清水清洗,清洗后用风吹干,两端法兰加盖堵头,胶管外采用聚丙烯编织带或布缠包。
本发明这种炼钢转炉氧枪吹氧胶管制作方法通过添加改性材料吸收渗透入橡胶中的水分,避免主体材料因为吸水导致的水解变色而造成的老化,从而提高输水橡胶管耐水性能,延长冷却机组橡胶管寿命,通过纤维层包覆来增强橡胶管,减少外胶管层弯折时的损伤。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (8)
1.炼钢转炉氧枪吹氧胶管制作方法,包括吹氧胶管本体,其特征在于,所述吹氧胶管本体包括内胶层、增强层、骨架层、中胶层和外胶层,在所述吹氧胶管本体两端的法兰接头的外沟槽表面上由内向外顺序布置内胶层、增强层、端部加固层、端部胶片、增强层、端部补强层、端部加固层、端部胶片、骨架层、中胶层、增强层和外胶层,并经硫化成型为一体。
2.如权利要求1所述的炼钢转炉氧枪吹氧胶管制作方法,其特征在于,所述法兰接头用厚金属板和厚壁金属管加工制成,组装嵌固,喷砂除垢,与内胶层的端部内表面相粘接,所述端部加固层用纤维丝帘子布密缠而成,所述骨架层螺旋状纤维丝,所述增强层和端部补强层采用帘布贴胶,所述增强层采用棉织物擦胶。
3.如权利要求2所述的炼钢转炉氧枪吹氧胶管制作方法,其特征在于,所述内胶层包括三元乙丙橡胶、炭黑、石蜡油、分散剂、硬脂酸锌、防老剂、过氧化物,具体组分含量以重量百分比计为:三元乙丙橡胶70~100份、炭黑50~60份、石蜡油5~10份、分散剂4~7份、硬脂酸锌1~3份、防老剂0.5~1.5份、氧化锌3~5份、凡士林3~5份、过氧化物2~5份、促进剂CZ1~2份。
4.如权利要求3所述的炼钢转炉氧枪吹氧胶管制作方法,其特征在于,所述三元乙丙橡胶100份、炭黑60份、石蜡油6份、分散剂5份、硬脂酸锌2份、防老剂1份、氧化锌3份、凡士林5份、过氧化物3份、促进剂CZ1份。
5.如权利要求1所述的炼钢转炉氧枪吹氧胶管制作方法,其特征在于,所述制作方法包括以下步骤:
步骤A,采用二段混炼;
步骤B,将骨架层及外胶层直接在压出的内胶管上成型,同时为保证胶管在硫化过程中处于受压状态,在成型后包水扎布;
步骤C,采用硫化罐直接蒸汽加热连续硫化,硫化温度设置150~160℃,压力为0.45~0.55Mpa。
6.如权利要求1所述的炼钢转炉氧枪吹氧胶管制作方法,其特征在于,所述步骤A包括:
步骤A1,投料温度控制在80±5℃,先加入三元乙丙橡胶、炭黑、石蜡油氧化锌后混炼300~500秒,排料温度控制在170±5℃;
步骤A2,投料温度控制在60±5摄氏度,加入硬脂酸锌、凡士林、炭黑、促进剂CZ和防老剂,当温度上升至80℃时,加入过氧化物,混炼时间为150~200秒。
7.如权利要求2所述的炼钢转炉氧枪吹氧胶管制作方法,其特征在于,所述步骤B包括法兰接头表面处理:
步骤B1,喷砂后用丙酮等净化处理,涂刷胶黏剂;
步骤B2,埋置静电导线。
8.如权利要求1所述的炼钢转炉氧枪吹氧胶管制作方法,其特征在于,还包括步骤D,胶管内壁用洗涤剂清水清洗,清洗后用风吹干,两端法兰加盖堵头,胶管外采用聚丙烯编织带或布缠包。
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CN86207692U (zh) * | 1986-09-27 | 1987-09-02 | 沈阳胶管厂 | 炼钢转炉用高压吹氧胶管 |
CN104292657A (zh) * | 2014-09-25 | 2015-01-21 | 沈阳化工大学 | 一种无硫三元乙丙胶管胶胶料 |
CN106380706A (zh) * | 2016-11-04 | 2017-02-08 | 南京利德东方橡塑科技有限公司 | 一种环保型的低烟阻燃绝缘橡胶组合物、制备方法、用途及其应用产品 |
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