CN110791254B - 一种用于制冷压缩机的阀板研磨液 - Google Patents
一种用于制冷压缩机的阀板研磨液 Download PDFInfo
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Abstract
本发明公开了一种用于制冷压缩机的阀板研磨液。由如下重量份数的物质组成：硼铈铝石20‑30份，有机酸3‑5份，咪唑化合物2‑8份，甘油2‑6份，表面活性剂2‑5份，水20‑30份。本发明选用硼铈铝石替代传统的纳米金刚石粉，微晶石粉及硅微粉作为主要的磨料，磨削速度快，效果好，采用有机酸和咪唑化合物的组合提高研磨速度，同时降低金属层表面的损伤的效果，采用本发明的研磨液用于制冷压缩机的阀板的研磨，增强了阀板的密封性能和抗腐蚀性能，增强制冷压缩机的使用寿命。
Description
技术领域
本发明属于制冷压缩机制备技术领域，具体涉及一种用于制冷压缩机的阀板研磨液。
背景技术
制冷压缩机是制冷系统的核心耗能部件，其处于吸气状态时，阀板的阀口面密封，一旦产生气体泄露，则压缩机制冷的效率会大大降低，达不到制冷的效果，现有的制冷压缩机阀板要经过研磨以提高其密封效果，阀板密封面为斜面或平面，阀板的密封面在进行装配前均需要进行粗研磨、半精研磨及精研磨几个步骤，其中精磨后需要密封面能达到密封要求，在精磨时，为了增加研磨效果，减少直接摩擦的接触面，都会加入研磨液进行辅助，以加强研磨效果，保护研磨面，为了增强研磨的光面效果，提高密封性，普遍采用纳米金刚石粉，微晶石粉及硅微粉作为研磨料，辅以浓硝酸，丙三醇等化学试剂除杂并润滑，制备的阀板虽然密封性能好，但是，其成品的耐腐蚀性能差，使用寿命短。
专利201710410298.7公开了一种用于提高隔膜泵密封性的法兰研磨液。包括磨粒、混合脂、添加剂和水，其pH值为3.2-4.5，具体由以下重量份的原料制成：磨粒包括：粒度为10-80nm的三氧化二铝12-16份、粒度为400-1200nm的胶态二氧化硅4-7份、粒度为20-80μm的稀土离子掺杂钇铝石榴石4-7份；混合脂包括：含氮硼蓖麻油聚氧氧乙烯醚3-6份、硬脂酸颗粒8-10份、棕榈蜡3-6份；添加剂包括：pH调节剂0.5-2份、水杨醛-1H-苯并三唑乙酰腙0.8-1.5份、聚天冬胺酸3.5-4.8份、碳酸钴2.4-3.5份、硫脲0.8-1.2份；水100-300份。该研磨液虽然耐腐蚀，但是其研磨的件密封性较差。
发明内容
本发明的目的在于提供一种用于制冷压缩机的阀板研磨液，提高阀板的密封性能和耐腐蚀性能。
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：硼铈铝石20-30份，有机酸3-5份，咪唑化合物2-8份，甘油2-6份，表面活性剂2-5份，水20-30份。
发明人发现硼铈铝石的磨削性能远远大于现有技术采用三氧化二铝和胶态二氧化硅的组合，掉的金属氧化物的颗粒溶解到研磨液中，增加了磨削效果，但是，凹部的金属膜表面的氧化层也会被溶解并露出金属膜表面，通过氧化作用金属膜表面进一步被氧化，结果蚀刻金属膜，为了防止该情况需要进一步添加金属防蚀剂，为了维持平坦化特性，取得氧化金属溶解剂和金属防蚀剂的效果平衡是重要的，期望凹部的金属膜表面的氧化层不会过多被蚀刻，同时被磨削掉的氧化层的颗粒效率高地被溶解，研磨速度大，这样通过添加作为氧化金属溶解剂的酸和金属防蚀剂(咪唑化合物)增加化学反应的效果，还可以提高研磨速度的同时降低金属层表面的损伤的效果。
所述表面活性剂为烷基酚聚氧乙烯醚、壬基酚聚氧乙烯、脂肪酸聚氧乙烯酯、重烷基苯磺酸盐、失水山梨醇酯中的一种或多种的混合物。
所述咪唑化合物选自2-甲基咪唑、2-(异丙基)咪唑、2-丁基咪唑、2，4-二甲基咪唑、2-乙基-4-甲基咪唑中的一种或多种的混合物。
所述有机酸为酒石酸、草酸、丙二酸、柠檬酸、苹果酸中的一种或多种的混合物。
所述硼铈铝石为硼铈铝石粉碎后的粉末，过160-200目筛制成。
本发明的有益效果：本发明选用硼铈铝石替代传统的纳米金刚石粉，微晶石粉及硅微粉作为主要的磨料，磨削速度快，效果好，采用有机酸和咪唑化合物的组合提高研磨速度，同时降低金属层表面的损伤的效果，采用本发明的研磨液用于制冷压缩机的阀板的研磨，增强了阀板的密封性能和抗腐蚀性能，增强制冷压缩机的使用寿命。
具体实施方式
下面结合具体实施例对本发明做进一步说明。
实施例1
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：硼铈铝石25份，酒石酸4份，2-甲基咪唑6份，甘油5份，烷基酚聚氧乙烯醚3份，水25份；所述硼铈铝石为硼铈铝石粉碎后的粉末，过180目筛制成。
实施例2
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：硼铈铝石22份，草酸3份，2-(异丙基)咪唑3份，甘油2份，壬基酚聚氧乙烯2份，水20-30份；所述硼铈铝石为硼铈铝石粉碎后的粉末，过160目筛制成。
实施例3
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：硼铈铝石28份柠檬酸5份，2-乙基-4-甲基咪唑7份，甘油5份，脂肪酸聚氧乙烯酯4份，水26份；所述硼铈铝石为硼铈铝石粉碎后的粉末，过200目筛制成。
对比例1
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：纳米金刚石粉25份，酒石酸4份，2-甲基咪唑6份，甘油5份，烷基酚聚氧乙烯醚3份，水25份；所述纳米金刚石粉为纳米金刚石碎后的粉末，过180目筛制成。
对比例2
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：微晶石粉25份，酒石酸4份，2-甲基咪唑6份，甘油5份，烷基酚聚氧乙烯醚3份，水25份；所述微晶石粉为微晶石粉碎后的粉末，过180目筛制成。
对比例3
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：硼铈铝石25份，2-甲基咪唑6份，甘油5份，烷基酚聚氧乙烯醚3份，水25份；所述硼铈铝石为硼铈铝石粉碎后的粉末，过180目筛制成。
对比例4
一种用于制冷压缩机的阀板研磨液，由如下重量份数的物质组成：硼铈铝石25份，酒石酸4份，甘油5份，烷基酚聚氧乙烯醚3份，水25份；所述硼铈铝石为硼铈铝石粉碎后的粉末，过180目筛制成。
实验例1：
选取未经研磨的阀板，上研磨机，研磨机加入本发明实施例1-3及对比例1-4的研磨液，进行研磨，研磨4小时，完成后，称重，将研磨好的阀板分为两组，一组用质量分数5％的盐酸浸泡75天，一组用质量分数5％的氢氧化钠浸泡75天，称重，计算腐蚀率：
腐蚀率＝(研磨后称重W1-腐蚀后称重W2)/研磨后称重W1X100％
测试结果见表1：
表1
注：*代表与实施例1组比较P<0.05；**P<0.01。
实验例2：
选取未经研磨的阀板，上研磨机，研磨机加入本发明实施例1-3及对比例1-4的研磨液，进行研磨，研磨4小时，完成后，用肉眼观察各实验组工件的表面，工件表面外观均匀、无异色、无雪花，采用微型光泽A-4430检测得到工件表面光泽度，见表2：
表2
注：*代表与实施例1组比较P<0.05；**P<0.01。
Claims (1)
1.一种用于制冷压缩机的阀板研磨液，其特征在于，由如下重量份数的物质组成：硼铈铝石25份，酒石酸4份，2-甲基咪唑6份，甘油5份，烷基酚聚氧乙烯醚3份，水25份；所述硼铈铝石为硼铈铝石粉碎后的粉末，过180目筛制成。
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