CN109181835A - 一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物 - Google Patents
一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物 Download PDFInfo
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Abstract
本发明公开了一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,是采用质量比10~20%的乙二酸双酯和90~80%的聚α‑烯烃(SpectraSyn100)复合作为全合成复合基础油,配合多种复合添加剂调和而成。它包括:抗氧剂、油性剂、摩擦改进剂、固体润滑剂、补强剂、防锈剂。本发明具有良好的热氧化安定性和高剪切稳定性,极压抗磨承载性,扩散性和导热性,稳定的油膜厚度和强度,有利于延长模具的使用寿命,固体润滑剂分散性好,相容性好以及便于清洗。
Description
技术领域
本发明属于润滑剂技术领域。具体是一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物。
背景技术
不锈钢从化学成分上讲,是种以铁和碳为基础的含有较多合金元素的高合金钢。不锈钢从物理、化学性能上讲,是一种特殊钢。不锈钢包括耐酸钢、不起皮钢和电阻合金等,它们的共同特点是在空气及弱腐蚀介质中能抵抗腐蚀性-即不易生钫。由于这些钢具有不易生锈的特点,所以人们统称它们为不锈钢。不锈钢不是绝对不生锈、不被腐蚀,而是生锈量、被腐蚀量少;生锈和被腐蚀的过程较慢,甚至根本察觉不到。因此说,不锈只具有相对的含义,而不是绝对的。不锈钢的发明是世界冶金史上的一项重大成就,为近代工业的发展和社会进步奠定了重要的物质和技术基础。它在发展过程中逐步形成了马氏体不锈钢、铁素体不锈钢、奥氏体不锈钢、奥氏体十铁素体双相不锈钢从及沉淀硬化不锈钢五大类。奥氏体不锈钢是克服马氏体不锈钢耐蚀性不足以及铁素体脆性大而发展起来的钢种。以Cr和Ni为主要合金元素的奥氏体不锈钢耐蚀性高,而且塑性好,易于加工成形,具有良好的可焊性、低温韧性和无磁性等性能,是最重要也是目前应用最广泛的不锈耐酸钢,约占不锈钢总产量的2/3.这类钢的基本成分是18%~25%Cr,8%~20%Ni,低碳,也含有少量的钼、铌、钛等。由于钢中含有较多的铬、镍元素,而镍又是扩大相区的合金元素,因而可使其在室温下具有奥氏体组织。
为了提高不锈钢的综合性能,一个重要的技术手段就是在合金化过程中加入氮元素。从含氮不锈钢的研究分析可知:氮元素在不锈钢中所起的作用是比较复杂。氮元素的引入对双相不锈钢的新品种的出现和升级起重要作用,由于氮是形成奥氏体和扩大奥氏体区的关键性元素之一,可以显著提高双相不锈钢的抗点腐蚀和缝隙腐蚀性能,并且可提高钢的屈服强度,是最有效的固溶强化元素。氮的作用是在提高强度的同时,还能明显增加奥氏体和双相体不锈钢的韧性,并且能延缓金属间相的组成。钼、锰、铬、钒、铌、钛等元素可降低氮在钢液体中的活度,从而提高氮的溶解度。
金属固态塑性成型过程中简称金属成型过程(又叫金属压力加工或锻压加工),它是指在外力作用下,使用金属材料产生预期塑性变形,以活动所需形状,尺寸和力学性能的毛坯或零件的加工方法。在金属塑性加工过程中,为提高生产效率,获得满意的加工质量,一般都要求使用一类润滑冷却介质,及通常所说的塑性加工润滑剂。金属塑性加工是一种被广泛采用,较先进的较少无切削的加工工艺,其中最主要的加工方法有:锻造、轧制、挤压、拉拔和冷冲压加工。然而在这些加工方法中,当前存在的主要问题是模具寿命短。与模具寿命短有关的因素很多,金属塑性加工中的润滑是其主要的影响因素之一。金属加工润滑剂剂主要是在工具(或模具)与被加工的金属工件之间形成一种膜,以减轻在加工过程中一个表面对着一个表面的粘附或粘接。按其形态,金属加工油剂可分为油基型、水基型、半合成液和其它型。众所周知,一种润滑剂往往要求实现多种功能,这些要求可能是矛盾或者相互制约的,因此挑选润滑剂就变成一种多方面利弊综合考虑的事情,特别是受特殊要求左右。因此根据不同的金属加工序,材质,型材,加工工艺选择润滑剂是本领域基本常识。
各种金属加工工艺不同,润滑剂所发挥的作用不同,其技术要求也各不相同,大多数金属加工润滑剂都要求包含控制摩擦、减少磨损、控制热量和金属表面保护等基本性能,近来安全环保和回收要求不断提高。在金属加工过程中,金属加工润滑剂不是孤立的因素,应该将其当成整个润滑计划和系统工程的一部分,与工厂所有润滑剂和润滑装置组成了一个完整的摩擦学体系,才能更好地实现金属材料的加工。不同金属加工工艺的润滑剂,其质量要求各不相同。
含氮双相不锈钢的特点:①在不锈钢中主要是通过固溶强化、氮化物的弥散强化和晶粒细化的三种途径来改善钢的性能;②可以提高奥氏体不锈钢和双相不锈钢的强度,而又不降低韧性,且还能提高其抗蠕变性;③在某些介质环境中,氮可以提高不锈钢的抗腐蚀性能,包括抗应力腐蚀、抗点腐蚀及抗空蚀磨损性能④以氮代替镍的合金化,对铸造含氮超低碳双相不锈钢和无镍不锈钢有重要意义,且显著降低不锈钢的成本。
挤压是将金属罝于一封闭的挤压模内,用强大的挤压力将金属从模孔中挤出成型的方法。挤压过程中,坯料金属坯料的截面依照模孔的形状减少,长度增加。挤压拟获得各种复杂截面的型材或零件。在挤压过程中,坯料与挤压模具之间由于接触而产生摩擦,摩擦使模具磨损,工件表面划伤,甚至发生粘模,即缩短了模具寿命,又影响挤压质量,同时增加了变形力和变形功。摩擦还会引起金属变形不均匀,严重时产生裂纹。为减少摩擦的不良影响,在坯料与模具之间加润滑剂是一种有效的方法。挤压润滑剂是金属挤压过程中,用来有效地避免金属的直接接触,减少挤压载荷和工具磨损,改变产品质量,延长模具寿命的一种材料。挤压加工工艺条件:根据加工温度的不同,挤压加工分为冷挤压、温挤压和热挤压。冷挤压是室温下,利用模具对金属施加强大的压力,使其产生塑性变形而获得一定形状、尺寸的零件的生产方法。温挤是在冷挤基础上发展起来的一项新工艺,将金属材料加热到200~800℃范围内进行的挤压加工。热挤压温度一般在800℃以上。挤压加工工艺过程特点:单位压力大,表面温度高,接触面积不断变化。挤压润滑剂的作用,挤压是把坯料放在加油缸中,靠水压机的推头使其从一定形状和尺寸模具中挤出。与锻压比较,加工条件更为苛刻,尤其是大变量的冷挤压,对润滑剂的要求更高。挤压加工润滑剂可以减少挤压材料与挤压缸以及模孔间的摩擦力,使金属流动的不均匀性减轻,从而防止裂纹产生,降低温升和挤压力。冷挤压润滑剂的性能要求,耐压能力要达到200Mpa以上;润滑剂要充分覆盖与挤压新生面;保持低的摩擦系数;良好的润滑性能,良好的浸润性和延展性;适应多变的挤压工况条件;润滑膜的持久性;使用方便、易清洗、且无毒无害。
静液挤压工艺,挤压杆通过传压介质迫使金属流过模孔而成形。由于坯料是在极高的静液压力下成形,且坯料周围充满静液介质,极大地提高制品的机械性能,提高挤压制品的精度、表面光洁度和生产效率,也扩大挤压加工材料领域。由于工件材料有高的高温强度,因而模具中的应用很高。因此对润滑剂要求较高。要求具有良好的热氧化安定性和高剪切稳定性,极压抗磨承载性,稳定的油膜厚度和强度,有利于延长模具的使用寿命,固体润滑剂分散性好,相容性好以及便于清洗。
发明内容
本发明的目的是提供一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物。
本发明解决上述技术问题的技术方案如下:
一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,采用质量比10~20%的乙二酸双酯和90~80%的聚α-烯烃(SpectraSyn 100)复合作为全合成复合基础油,配合多种复合添加剂调和而成,各组分的质量百分比,如下表所示:
以上组分总和为100%。
上述基础油是采用质量百分比10~20%的乙二酸双酯和质量百分比90~80%的聚α-烯烃(SpectraSyn 100)复合作为全合成复合基础油。
上述抗氧剂是质量百分比50%的二异丁基对甲酚和质量百分比50%的N-辛基苯基β-萘胺调和而成;上述油性剂是质量百分比50%的硫化猪油和质量百分比50%的硼氮化蓖麻油调和而成。
上述摩擦改进剂是硫磷酸钼(T461);上述固体润滑剂是质量百分比质量百分比50%的500目石墨和质量百分比50%的1200目碳酸钙(轻钙)调和而成。
上述补强剂是二烷基二硫代氨基甲酸酯;上述防绣剂是质量百分比50%的烯基丁二酸酯和质量百分比50%的N-油酰肌胺酸十八胺盐调和而成。
本发明的优点
本发明具有良好的热氧化安定性和高剪切稳定性,极压抗磨承载性,扩散性和导热性,稳定的油膜厚度和强度,有利于延长模具的使用寿命,固体润滑剂分散性好,相容性好以及便于清洗。
具体实施方案
下面结合实施例对本发明作进一步说明。
实施例1
一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,将下列各组分的按质量百分比调和而成,如下表所示:
以上组分总和为100%。
实施例2
一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,将下列各组分的按质量百分比调和而成,如下表所示:
以上组分总和为100%。
实施例3
一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,将下列各组分的按质量百分比调和而成,如下表所示:
以上组分总和为100%。
实施例1的典型技术指标,如下表所示:
实施例2的典型技术指标,如下表所示:
实施例3的典型技术指标,如下表所示:
Claims (5)
1.一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,其特征在于:采用质量比10~20%的乙二酸双酯和90~80%的聚α-烯烃(SpectraSyn100)复合作为全合成复合基础油,配合多种复合添加剂调和而成,各组分的质量百分比,如下表所示:
以上组分总和为100%。
2.根据权利要求1所述的一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,其特征在于:所述基础油是采用质量百分比10~20%的乙二酸双酯和质量百分比90~80%的聚α-烯烃(SpectraSyn 100)复合作为全合成复合基础油。
3.根据权利要求1所述的一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,其特征在于,所述抗氧剂是质量百分比50%的二异丁基对甲酚和质量百分比50%的N-辛基苯基β-萘胺调和而成;所述油性剂是质量百分比50%的硫化猪油和质量百分比50%的硼氮化蓖麻油调和而成。
4.根据权利要求1所述的一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,其特征在于,所述摩擦改进剂是硫磷酸钼(T461);所述固体润滑剂是质量百分比质量百分比50%的500目石墨和质量百分比50%的1200目碳酸钙(轻钙)调和而成。
5.根据权利要求1所述一种含氮双相不锈钢板材静液挤压加工工艺润滑油组合物,其特征在于,所述补强剂是二烷基二硫代氨基甲酸酯;所述防绣剂是质量百分比50%的烯基丁二酸酯和质量百分比50%的N-油酰肌胺酸十八胺盐调和而成。
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