CN108277072A - 一种锂合金半合成切削液及其制备方法 - Google Patents
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Abstract
本发明涉及机械加工用切削液技术领域,公开了一种锂合金半合成切削液,包括40~70份基础油、4~13份pH调节剂、12~30份乳化剂、2.5~7份缓蚀剂、0.01~0.3份消泡剂、2~6份杀菌剂、3~10份络合剂、5~20份水。本发明还公开了锂合金半合成切削液的制备方法。本发明的锂合金半合成切削液具有良好的润滑性、消泡性、耐磨性、抗硬水性、抗腐蚀性和优异的清洗冷却性能,同时稳定性好,使用寿命长。
Description
技术领域
本发明涉及机械加工用切削液技术领域,具体涉及一种锂合金半合成切削液及其制备方法。
背景技术
锂合金是目前实际应用中最轻的合金材料,由于锂合金的密度与强度方面的优势,在航空、航天、国防工业、汽车工业、3C行业等领域具有广阔的应用前景,并成为目前结构材料领域研究的热点。
由于锂元素极为活泼,给锂合金水溶性切削加工带来很大困难及安全隐患。锂合金加工过程中通常存在以下问题:一是锂合金在切削加工过程中,加工机床和加工零件容易被腐蚀;二是锂合金在切削加工过程中,金属与液体发生反应,析出离子,使切削液的水质硬度大幅升高,导致切削液破乳分层,缩短切削液的使用寿命;三是锂合金化学性质活泼,与切削液中的水、胺发生反应,导致锂合金工件腐蚀变色影响加工产品质量。
现有的用于加工锂合金的切削油存在以下缺点:不易清洗,冷却性能差,使用过程中存在安全隐患,容易起火。因此研发兼具润滑性、冷却性、防锈性、易清洗、对设备不腐蚀、对环境友好的切削液就显得很重要。
发明内容
本发明的目的是提供一种能够解决上述问题的锂合金半合成切削液。
本发明的目的是提供锂合金半合成切削液的制备方法。
为达到上述目的之一,本发明采用以下技术方案:
一种锂合金半合成切削液,按照重量份数,包括40~70份基础油、4~13份pH调节剂、12~30份乳化剂、2.5~7份缓蚀剂、0.01~0.3份消泡剂、2~6份杀菌剂、3~10份络合剂、5~20份水。
进一步地,锂合金半合成切削液包括45份基础油、8份pH调节剂、18份乳化剂、4份缓蚀剂、0.1份消泡剂、3份杀菌剂、5份络合剂、17.9份水。
锂合金切削液的pH值并不受特别限制,在优选的方案中,锂合金切削液的pH值为9.0~11.0,更有选为9.5~10.5;该pH范围的切削液既能抑制细菌的繁殖,又不至于因pH值过高对操作人员皮肤接触造成不适,还能显著提高锂合金切削液的稳定性和使用寿命。
进一步地,所述基础油为环烷基基础油和/或中间基基础油,用于提高锂合金切削液的抗磨性。
进一步地,所述基础油的密度为0.86~0.9g/cm3,在40℃下的运动粘度为20~40mm2/s;可以提高锂合金切削液的润滑性。
进一步地,所述pH调节剂为三乙醇胺、二甘醇胺、异丙醇胺、2-氨基-2-甲基-1-丙醇、N-甲基二乙醇胺中的至少一种。上述pH调节剂的合理使用符合水溶性切削液的性能要求和环保要求,并且具有良好的pH值稳定性,从而利于切削液保持其长期的使用寿命。
进一步地,所述乳化剂为石油磺酸盐、烷基酚聚氧乙烯醚、失水山梨醇脂肪酸酯、脂肪醇聚氧乙烯醚、聚氧乙烯失水山梨醇脂肪酸酯、醇醚羧酸、聚异丁烯琥珀酸酐中的至少一种。乳化剂可以提高锂合金切削液的稳定性能。
石油磺酸盐乳化剂的pH为7.0~8.0,优选50~60wt%的石油磺酸钠溶液。
进一步地,所述缓蚀剂为苯并三氮唑、烷基磷酸酯、钼酸钠、乙二胺四甲叉膦酸钠、聚丙烯酸钠中的至少一种。缓蚀剂可以显著提高锂合金切削液的抗腐蚀性能。
苯并三氮唑优选T706,苯并三氮唑衍生物优选L39,烷基磷酸酯优选烷基磷酸酯缓蚀剂ASI-80、OPS-75E、MDIT、CPNF-3、9218LA中的至少一种。
进一步地,所述消泡剂选自Foam Ban MS-575、Foam Ban HP710、Foam Ban HP720、Foam Ban 129、DEE FO 1015中的至少一种。消泡剂可以显著提高锂合金切削液的消泡性能。
进一步地,所述杀菌剂为Forte、MBM、BIT、MIT、BK、IPBC中的至少一种。杀菌剂可以延长锂合金切削液的使用寿命。
进一步地,所述络合剂为水解聚马来酸酐、聚羟基丙烯酸、聚丙烯酰胺、酒石酸、葡庚糖酸盐中的至少一种。发明人发现络合剂不但能提高切削液对锂合金的缓蚀性能,保证切削后的锂合金表面能光亮如初,而且还可以提高切削液的抗硬水性能。
一种制备上述锂合金半合成切削液的方法,包括以下步骤:
S1、在调合罐中加入基础油,开启搅拌机;
S2、加入pH调节剂,搅拌均匀;
S3、加入乳化剂,搅拌至完全分散均匀;
S4、加入缓蚀剂,搅拌使之均匀分散;
S5、加入络合剂,搅拌使之均匀分散;
S6、加入水,升温至50℃搅拌,再加入杀菌剂,搅拌均匀;
S7、加入消泡剂,搅拌均匀。
本发明具有以下有益效果:
本发明的锂合金半合成切削液具有良好的润滑性、消泡性、耐磨性、抗硬水性、抗腐蚀性和优异的清洗冷却性能,同时稳定性好,使用寿命长。
具体实施方式
下面结合具体实施例对本发明做进一步的说明。
以下实施例所采用的锂合金材质牌号为LA91和LZ91;所用基础油的密度为0.86~0.9g/cm3,在40℃下的运动粘度为20~40mm2/s。
实施例1
锂合金半合成切削液,其组成为:48.9g环烷基基础油、8.5gpH调节剂三乙醇胺、20g乳化剂(50~60wt%的石油磺酸钠溶液)、4.5g烷基磷酸酯缓蚀剂ASI-80、0.1g消泡剂Foam Ban 129、3.5g杀菌剂BK、7g络合剂水解聚马来酸酐、12.5g水。
按照以下步骤制备:
S1、在调合罐中加入基础油,开启搅拌机;
S2、加入pH调节剂,搅拌10分钟使之均匀分散;
S3、加入乳化剂,搅拌至完全分散均匀;
S4、加入缓蚀剂,搅拌10分钟使之均匀分散;
S5、加入络合剂,搅拌使之均匀分散;
S6、加入水,升温至50℃,搅拌20分钟,再加入杀菌剂,搅拌均匀;
S7、加入消泡剂,搅拌均匀,取少量样品至透明烧杯中观察是否透亮,检查合格后出罐装桶即可。
实施例2
锂合金半合成切削液,其组成为:45g基础油(环烷基基础油和/或中间基基础油1∶2)、8gpH调节剂二甘醇胺、18g份乳化剂(聚氧乙烯失水山梨醇脂肪酸酯)、4g份缓蚀剂(苯并三氮唑衍生物L39)、0.1g消泡剂Foam Ban HP720、3g杀菌剂IPBC、5g络合剂聚羟基丙烯酸、17.9g水。
按照与实施例1相同的步骤制备。
实施例3
锂合金半合成切削液,其组成为:60g环烷基基础油、7gpH调节剂异丙醇胺、16g乳化剂(脂肪醇聚氧乙烯醚)、5g烷基磷酸酯缓蚀剂OPS-75E、0.1g消泡剂DEE FO 1015、4g杀菌剂MIT、6.5g络合剂酒石酸、7.9g水。
按照与实施例1相同的步骤制备。
实施例4
锂合金半合成切削液,其组成为:40g基础油(环烷基基础油和/或中间基基础油1∶1)、4gpH调节剂2-氨基-2-甲基-1-丙醇、30g乳化剂(烷基酚聚氧乙烯醚)、7g缓蚀剂(苯并三氮唑衍生物L39、钼酸钠、聚丙烯酸钠,质量比为1∶3∶3)、0.01g消泡剂Foam Ban HP710、2g杀菌剂MBM、3g络合剂聚丙烯酰胺、20g水。
按照与实施例1相同的步骤制备。
实施例5
锂合金半合成切削液,其组成为:70g中间基基础油、13gpH调节剂N-甲基二乙醇胺、12g乳化剂(50wt%的石油磺酸钠溶液和聚异丁烯琥珀酸酐,质量比为1∶3)、2.5g缓蚀剂(苯并三氮唑T706和乙二胺四甲叉膦酸钠,质量比为1∶1.5)、0.2g消泡剂Foam Ban MS-575、6g杀菌剂Forte、10g络合剂葡庚糖酸盐、5g水。
按照与实施例1相同的步骤制备。
性能测试
实施例1、2、5的锂合金半合成切削液进行性能测试,结果如下表所示:
对比例参照实施例2,但是不加入络合剂。
检测方法:
外观:目测,提取包装桶内切削液浓缩液,用150mL密封透明塑料瓶置于55±2℃恒温箱内7天后外观有无变化。
抗硬水性:滴定法,提取包装桶内切削液浓缩液,用蒸馏水稀释成5%浓度,用预先配置的硬水进行滴定。
pH值:pH计,提取包装桶内切削液浓缩液,用蒸馏水稀释成5%浓度,用pH计进行检测。
消泡性:具塞量筒,将配置好的稀释液倒入100mL量筒中,使液面在70mL处,上下摇动1min,上下摇动距离为1/3m,摇动频率约为100~120次/min,然后观察。
密度:密度计,提取包装桶内切削液浓缩液,用密度计进行检测。
工作液稳定性:静置法,提取包装桶内切削液浓缩液,用100ppm硬水稀释成5%浓度,置于25℃环境温度中24h后进行观察。
腐蚀性:恒温箱,分别将铜片、铝片、锂合金片全浸入用100ppm硬水稀释成的5%浓度稀释液中,密封置于55℃±2℃的恒温箱中,到规定实时间后取出,观察腐蚀情况;取用100ppm硬水稀释成的2%浓度稀释液,滴加5~6滴到已磨光洗净的铁片上,置于底部加1/3体积水的干燥器中,在25℃下放置24h后观察。
使用寿命:客户实际使用得出结论。
四球磨损测试PB、磨斑大小:使用四球机按照GB3142-82测试。
从上表可知,实施例1、2、5的锂合金半合成切削液具有良好的消泡性、耐磨性、抗硬水性、抗腐蚀性,同时稳定性好,使用寿命长,实施例2相较而言性能更优;而未加入络合剂的对比例在抗腐蚀性、抗硬水性、稳定性方面不如实施例1、2、5。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何属于本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应该以权利要求的保护范围为准。
Claims (10)
1.一种锂合金半合成切削液,其特征在于,按照重量份数,包括40~70份基础油、4~13份pH调节剂、12~30份乳化剂、2.5~7份缓蚀剂、0.01~0.3份消泡剂、2~6份杀菌剂、3~10份络合剂、5~20份水。
2.根据权利要求1所述的锂合金半合成切削液,其特征在于,包括45份基础油、8份pH调节剂、18份乳化剂、4份缓蚀剂、0.1份消泡剂、3份杀菌剂、5份络合剂、17.9份水。
3.根据权利要求1或2所述的锂合金半合成切削液,其特征在于,所述基础油为环烷基基础油和/或中间基基础油。
4.根据权利要求3所述的锂合金半合成切削液,其特征在于,所述基础油的密度为0.86~0.9g/cm3,在40℃下的运动粘度为20~40mm2/s。
5.根据权利要求1或2所述的锂合金半合成切削液,其特征在于,所述pH调节剂为三乙醇胺、二甘醇胺、异丙醇胺、2-氨基-2-甲基-1-丙醇、N-甲基二乙醇胺中的至少一种。
6.根据权利要求1或2所述的锂合金半合成切削液,其特征在于,所述乳化剂为石油磺酸盐、烷基酚聚氧乙烯醚、失水山梨醇脂肪酸酯、脂肪醇聚氧乙烯醚、聚氧乙烯失水山梨醇脂肪酸酯、醇醚羧酸、聚异丁烯琥珀酸酐中的至少一种。
7.根据权利要求1或2所述的锂合金半合成切削液,其特征在于,所述缓蚀剂为苯并三氮唑、烷基磷酸酯、钼酸钠、乙二胺四甲叉膦酸钠、聚丙烯酸钠中的至少一种。
8.根据权利要求1或2所述的锂合金半合成切削液,其特征在于,所述消泡剂选自FoamBan MS-575、Foam Ban HP710、Foam Ban HP720、Foam Ban 129、DEE FO 1015中的至少一种;所述杀菌剂为Forte、MBM、BIT、MIT、BK、IPBC中的至少一种。
9.根据权利要求1或2所述的锂合金半合成切削液,其特征在于,所述络合剂为水解聚马来酸酐、聚羟基丙烯酸、聚丙烯酰胺、酒石酸、葡庚糖酸盐中的至少一种。
10.一种制备权利要求1或2所述的锂合金半合成切削液的方法,其特征在于,包括以下步骤:
S1、在调合罐中加入基础油,开启搅拌机;
S2、加入pH调节剂,搅拌均匀;
S3、加入乳化剂,搅拌至完全分散均匀;
S4、加入缓蚀剂,搅拌使之均匀分散;
S5、加入络合剂,搅拌使之均匀分散;
S6、加入水,升温至50℃搅拌,再加入杀菌剂,搅拌均匀;
S7、加入消泡剂,搅拌均匀。
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CN115820330A (zh) * | 2022-12-21 | 2023-03-21 | 广东红日星实业有限公司 | 一种切削液及其制备方法和应用 |
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