CN106497639A - 一种炼铁搅笼机水下轴头用润滑脂及制备方法 - Google Patents

一种炼铁搅笼机水下轴头用润滑脂及制备方法 Download PDF

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CN106497639A
CN106497639A CN201610875924.5A CN201610875924A CN106497639A CN 106497639 A CN106497639 A CN 106497639A CN 201610875924 A CN201610875924 A CN 201610875924A CN 106497639 A CN106497639 A CN 106497639A
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grease
base oil
oil
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马爱民
莫林和
刘翠苹
赵伟
李鹏
李纪委
融占良
栗志彬
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China Petroleum and Chemical Corp
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Abstract

本发明涉及一种炼铁搅笼机水下轴头用润滑脂及制备方法；组份为基础油、稠化剂、粘度指改进剂、极压抗磨剂和防锈剂。将稠化剂12羟硬脂酸锂、12羟硬脂酸钙、辛二酸锂质量比3:1:1比例的复合皂和45％－55％的基础油加入到反应釜中，搅拌加热到220‑230℃，恒温25分钟，加入10％－20％的基础油冷却，继续搅拌，加入剩余的基础油，搅拌降温到70℃以下，加入添加剂，搅拌混合均匀。使用该发明生产的润滑脂具有滴点高，在一定重载条件下工作减少润滑部位的摩擦磨损；具有较好的抗水性能，具有良好的盐雾防锈性能；基础油凝点较小，保证润滑脂有一定的泵送性能。解决润滑脂同时满足高温不流失、极压性抗磨性能、盐雾防锈性能、加水抗剪切性能、泵送性等综合问题。

Description

一种炼铁搅笼机水下轴头用润滑脂及制备方法
技术领域
本发明属于润滑脂技术领域，涉及一种炼铁搅笼机水下轴头用润滑脂及制备方法。
背景技术
高炉熔渣与铁水分离后，经渣沟进入熔渣粒化区，水渣冲制箱喷出的高速水流使熔渣水淬粒化冷却。炉渣在水渣沟内进一步粒化缓冲后，流入装有水渣分离器搅笼的搅笼池中，由带有螺旋叶片的搅笼机将水渣混合物中的炉渣分离出来，经脱水后成为干渣。推广使用的明特法水渣处理系统属于环保设备。
搅笼机是炼铁明特法水渣处理的关键设备，相对传统的沉淀法水渣处理装置具有以下特点：设备布置紧凑，节省占地面积；对环境污染少；能够连续排渣，过滤效率高，工作可靠性高；设备简单，部件磨损小，投资少；对于特殊炉况下的高温渣、泡沫渣及大块渣都有相当好的处理能力。
炼铁厂搅笼机水渣处理系统，设备由螺旋排渣机和过滤器组成，呈一定角度安装在池内，螺旋机旋转将渣水分离，达到排渣和脱水目的。主要润滑部位螺旋机水下轴头，润滑条件：低速、重载，渣水温100℃左右，负载条件下环境温度达到150℃，水中由氯、钠、钙、镁等离子，轴头部位容易进水，对润滑脂的综合性要求高。一些通用油脂使用在高温150℃环境易流失，重载荷下极压抗磨性不足，一些极压油脂盐雾防锈性能不能达到要求；一些高温油脂长期剪切下易变软流失或混入水后油脂易流失。发明润滑脂同时满足高温不流失、重载荷下极压抗磨性要求、盐雾防锈性要求、加水抗剪切性能。
一般润滑脂使用到该部位会出现高温流失、极压抗磨性不足、盐雾防锈性不足。耐高温油脂加水抗剪切性不足。目前国内没有炼铁搅笼机水下轴头用润滑脂，未见任何公开的技术文献报道和专利。
发明内容
本发明的目是提供一种炼铁搅笼机水下轴头用润滑脂，选择合适的基础脂和添加剂，解决了润滑脂同时满足高温不流失、极压性抗磨能、盐雾防锈性、加水抗剪切性等综合问题，发明润滑脂一种炼铁搅笼机水下轴头用润滑脂满足工况的润滑要求。
本发明的技术如下：
本发明提供的一种炼铁搅笼机水下轴头用润滑脂成分重量百分含量如下：
(1)稠化剂6-13％；
(2)基础油85-90％；
(3)添加剂1-5％。
稠化剂是12羟硬脂酸锂、12羟硬脂酸钙、辛二酸锂质量比3:1:1比例的复合皂。
基础油为高粘度矿物油，基础油40℃运动粘度为300-600mm2/s。
基础油的粘度指数为不低于90。
基础油的凝点不高于-5℃。
添加剂包括：(a)粘度指数改进剂0.5-2％；(b)极压抗磨剂0.5-2％；(c)防锈剂0-1％。
粘度指数改进剂是聚异戊烯或聚甲基丙烯酸乙酯,两种同时使用，可按任意比例混配。
极压抗磨剂是二丁基二硫代氨基甲酸锑或二丁基二硫代氨基甲酸铋的一种或两种，极压抗磨剂为两种时可按任意比例混配；
防锈剂是石油磺酸锌或石油磺酸镁的一种,两种同时使用，可按任意比例混配；
本发明润滑脂组合物的制备方法如下：将稠化剂12羟硬脂酸锂、12羟硬脂酸钙、辛二酸锂质量比3:1:1比例的复合皂和45％－55％的基础油加入到反应釜中，搅拌加热到220-230℃，恒温25分钟，加入10％－20％的基础油冷却，继续搅拌，加入剩余的基础油，搅拌降温到70℃以下，加入添加剂，搅拌混合均匀。组合物经三辊机压油三遍后出成品罐装。
本发明的润滑脂有以下优点：由于选用了合适品种稠化剂和基础油，并添加了特定的添加剂，使得该润滑脂满足炼铁搅笼机水下轴头使用的综合特性要求。(1)使用了12羟硬脂酸锂、12羟硬脂酸钙、辛二酸锂复合皂润滑脂具有较高的滴点，高粘度指数基础油保证润滑脂在较高的温度条件下不容易流失且保持一定的油膜厚度；(2)加入聚异戊烯和聚甲基丙烯酸乙酯使润滑脂具有较好的粘附性能，能够保证润滑脂有水条件下的粘附性；(3)加入二丁基二硫代氨基甲酸锑或二丁基二硫代氨基甲酸铋使润滑脂具有较好的极压抗磨特性，四球法极压性PB值测试发现，测试值在100-120kg之间，高于一般极压润滑脂；(4)加入石油磺酸锌和石油磺酸镁提高了润滑脂的盐雾防锈性能；(5)使用较低凝点的基础油以及制做润滑脂锥入度大于280，使润滑脂在较低温度下泵送性优良。
四球极压性PB值测试方法，采用美国FALEX公司生产的四球法试验机，实验方法为SH/T0202，SH/T0202方法的测试条件为：温度：25℃，转速1770rpm，时间为10s；加水十万次锥入度变化，试验方法为GB/T269。将润滑脂装入锥入度盒内加入总重量为10％自来水，混合后进行十万次剪切后，测试润滑脂的锥入度，与润滑脂工作锥入度的差值。
使用该发明生产的润滑脂具有滴点高，保证润滑脂具有一定的高温保持能力，不容易流失；具有良好的极压抗磨性能，能在一定重载条件下工作减少润滑部位的摩擦磨损；具有良好的盐雾防锈性能，能够轴承在盐雾环境下保持良好的防锈能力，能够满足运转的润滑部件在盐雾的环境下的工作；具有良好抗剪切性能，润滑脂在轴承内强烈剪切环境下稠度变化小，保证润滑脂的粘附性；具有良好的抗水性能，在有水进入润滑脂体系内，润滑脂的稠度保持能力良好，粘附性良好；基础油凝点较小，润滑脂锥入度大于280，保证润滑脂具有一定的低温泵送性能。适宜炼铁搅笼机水下轴头工况的润滑要求。主要解决润滑脂同时满足高温不流失、极压性抗磨性能、盐雾防锈性能、加水抗剪切性能、泵送性等综合问题。
具体实施方式
下面通过具体实施例对本发明做进一步的阐述。
各实施例和比较例制备方法：
实施例1-8和比较例
将稠化剂12羟硬脂酸锂、12羟硬脂酸钙、辛二酸锂质量比3:1:1比例的复合皂和45％－55％的基础油加入到反应釜中，搅拌加热到220-230℃，恒温25分钟，加入10％－20％的基础油冷却，继续搅拌，加入剩余的基础油，搅拌降温到70℃以下，加入添加剂，搅拌混合均匀。组合物经三辊机压油三遍后出成品罐装。
实施例1-8组分含量与比较例组分含量见表1
表1实施例1-8组分含量与比较例组分含量
实施例1-8与比较例性能数据见表2
表2
由表2可以看出，本发明的润滑脂具有较高的滴点，基础油较高粘度以及粘度指数，润滑脂在较高温度下使用不容易流失保证润滑脂一定油膜厚度,该润滑脂基础油具有良好的低温凝固点,润滑脂的锥入度大于280,具有良好的泵送性能,该润滑脂具有良好的极压抗磨性能，加水剪切性能良好，具有良好的盐雾防锈性能，适合在高温、重载荷、与水接触部位、有大量盐雾环境条件下的轴承润滑。
本实施方式实例的化验项目只是化验的润滑脂的通用项目，以便保证润滑脂具有一般润滑脂所具有的通用性。
使用发明专利产品前后某公司炼铁厂搅笼机水下轴头轴承消耗量明显降低，统计使用前2014年各季度及全年水下轴头轴承消耗量与使用发明专利产品后2015年各季度及全年轴承的消耗量做对比。
使用发明专利产品后不论每个季度和全年水下轴头轴承消耗量明显降低，说明发明专利具有明显的推广使用价值。
从以上案例可得出如下结论：(1)本专利发明的润滑脂滴点高，使用基础油具较高的粘度指数，润滑脂在较高温度下具有一定的保持能力，不容易流失；(2)本专利发明的润滑脂具有良好的极压抗磨性能；能有在一定重载条件下工作减少润滑部位的摩擦磨损，延长轴承使用寿命。(3)本专利发明的润滑脂具有较好的抗水性能，能够保证轴承在有水进入条件下的润滑不受较大影响；(4)本专利发明的润滑脂具有良好的盐雾防锈性能，能够满足运转的润滑部件在盐雾环境下的工作；(5)本专利发明的润滑脂锥入度数值高较软，基础油凝点较小，保证润滑脂具有一定的泵送性能。综合以上性能，充分证明了本专利润滑脂配方中基础油选择、稠化剂选择、添加剂的选择以及润滑脂制备方法的合理性。
本发明提出的一种炼铁搅笼机水下轴头用润滑脂及制备方法，已经通过实施例子进行了描述，相关技术人员能在不脱离本发明内容、精神和范围内对本文所述的组分和方法进行改动或适当变更与组合，来实现本发明技术。特别需要指出的是，所有相类似的替换和改动对本领域技术人员来说是显而易见的，他们都被视为包括在本发明精神、范围和内容中。

Claims (10)

1.一种炼铁搅笼机水下轴头用润滑脂，其特征是按组合物的总重量百分比计，包括以下组分：
(1)稠化剂6-13％；
(2)基础油85-90％；
(3)添加剂1-5％。
2.根据权利要求1所述的组合物，其特征是稠化剂是12羟硬脂酸锂、12羟硬脂酸钙、辛二酸锂质量比为3:1:1比例的复合皂。
3.根据权利要求1所述的组合物，其特征是基础油为高粘度矿物油，基础油40℃运动粘度为300-600mm2/s。
4.根据权利要求1所述的组合物，其特征是基础油的粘度指数为不低于90。
5.根据权利要求1所述的组合物，其特征是基础油的凝点不高于-5℃。
6.根据权利要求1所述的组合物，其特征是添加剂包括：(a)粘度指数改进剂0.5-2％；(b)极压抗磨剂0.5-2％；(c)防锈剂0-1％。
7.根据权利要求1所述的组合物，其特征是粘度指数改进剂是聚异戊烯或聚甲基丙烯酸乙酯,两种同时使用，按任意比例混配。
8.根据权利要求1所述的组合物，其特征是极压抗磨剂是二丁基二硫代氨基甲酸锑或二丁基二硫代氨基甲酸铋的一种或两种，极压抗磨剂为两种时按任意比例混配。
9.根据权利要求1所述的组合物，防锈剂是石油磺酸锌或石油磺酸镁的一种,两种同时使用，按任意比例混配。
10.权利要求1所述的润滑脂的制备方法；其特征是将稠化剂12羟硬脂酸锂、12羟硬脂酸钙、辛二酸锂质量比为3:1:1比例的复合皂和45％－55％的基础油加入到反应釜中，搅拌加热到220-230℃，恒温25分钟，加入10％－20％的基础油冷却，继续搅拌，加入剩余的基础油，搅拌降温到70℃以下，加入添加剂，搅拌混合均匀；组合物经三辊机压油后出成品。
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