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                數控機床切削液的運用有哪些作用?

                • 發表時間:2020-08-18 09:46:25
                • 來源:未知
                • 人氣:
                  切削液是專門為數控機床研制的一種金屬加工液。以硫化豬油、硫化脂肪酸酯、氯化石蠟、環氧大豆油為主要極壓潤滑劑,配以不同比例的防銹劑、表面活性劑、抗氧劑等組成。
                 
                  數控機床切削液的作用是什么?
                 
                  1切削冷卻效果
                 
                  切削液能吸收和帶走切削區的大量熱量,降低刀具和工件的溫度,從而延長刀具的使用壽命,減少因熱變形而引起的工件尺寸誤差,為提高生產效率創造了重要條件。
                 
                  2切削潤滑
                 
                  切削液可以穿透工件和刀具之間,在切屑和刀具之間的小間隙內形成一層薄的吸附膜。因此,可以減少刀具與切屑、刀具與工件之間的摩擦,減少刀具磨損,從而使切屑去除平滑,提高工件表面質量。對于精加工,潤滑更為重要。
                 
                  三。切割清洗功能
                 
                  清洗后產生的小切屑容易吸附在工件和刀具上,特別是在加工內孔時。如果注入足夠的切削液,切屑可以很快地被沖走,切割也可以順利進行。在薄壁套筒車削加工過程中,選用厚極壓乳狀液作為切削液,在加工中起著非常重要的作用。
                 
                  4防銹效果
                 
                  在金屬切削過程中,工件與切削液成分分解或氧化產生的污泥等腐蝕介質接觸會產生腐蝕,與切削液接觸的機床零件表面也會受到腐蝕。另外,當工件在加工后或工序間的轉移過程中臨時存放時,要求切削液具有一定的防銹能力,防止環境介質和殘余切削液等腐蝕性物質對金屬的腐蝕。尤其是在南方潮濕多雨的季節,工序間的防銹措施更應引起重視。
                 
                  5其他功能
                 
                  除上述四項功能外,所用切削液應具有良好的穩定性,在儲存和使用過程中不應有沉淀或分層、油、皂和老化現象。它對細菌和霉菌有一定的抵抗力,不易滋生霉菌和生物降解,造成異味和變質。對噴漆部位無損傷,對人體無傷害,無刺激性氣味。使用過程中無煙、無霧或少煙。該工藝回收方便,污染小,排放廢液易處理,經處理后可達到國家工業廢水排放標準。
                 
                  Cutting fluid is a kind of metal processing fluid specially developed for CNC machine tools.It is composed of sulfurized lard,sulfurized fatty acid ester,chlorinated paraffin,epoxy soybean oil as the main extreme pressure lubricants,compounded with different proportions of antirust agent,surfactant,antioxidant,etc.
                 
                  What are the functions of cutting fluid used in CNC machine tools?
                 
                  1.Cooling effect in cutting
                 
                  The cutting fluid can absorb and take away a large amount of heat in the cutting area,reduce the temperature of the tool and the workpiece,so as to prolong the service life of the cutting tool,reduce the size error of the workpiece due to thermal deformation,and create an important condition for improving the production efficiency.
                 
                  2.Lubrication in cutting
                 
                  The cutting fluid can penetrate between the workpiece and the cutter,and form a thin adsorption film in the small gap between the chip and the tool.Therefore,the friction between the tool and the chip,between the tool and the workpiece can be reduced,and the tool wear can be reduced,so that the chip removal is smooth and the surface quality of the workpiece is improved.For finish machining,lubrication is more important.
                 
                  3.Cleaning function in cutting
                 
                  The small chips produced by cleaning are easy to adsorb on the workpiece and tool,especially when machining the inner hole.If enough cutting fluid is poured,the chip can be washed away quickly and the cutting can be carried out smoothly.In the process of turning thin-walled sleeve,a thick EP emulsion is selected as the cutting fluid,which also plays a very important role in machining.
                 
                  4.Antirust effect
                 
                  In the process of metal cutting,the workpiece will be corroded by contacting with the corrosive medium such as sludge produced by the decomposition or oxidation of the components of the cutting fluid,and the surface of the machine tool parts in contact with the cutting fluid will also be corroded.In addition,when the workpiece is temporarily stored after processing or during the transfer process between processes,the cutting fluid is required to have a certain anti rust ability to prevent the corrosion of the metal by the corrosive substances such as the environmental medium and the residual cutting fluid.Especially in the humid and rainy season in southern China,more attention should be paid to the rust prevention measures between working procedures.
                 
                  5.Other functions
                 
                  In addition to the above four functions,the cutting fluid used should have good stability,and there should be no precipitation or stratification,oil,soap and aging phenomena during storage and use.It has a certain resistance to bacteria and mold,and is not easy to grow mold and biodegradation,resulting in odor and deterioration.No damage to painted parts,no harm to human body,no irritating smell.There is no smoke,fog or little smoke during use.It is easy to recover,low pollution,easy to treat the discharged waste liquid,which can meet the national industrial wastewater discharge standard after treatment.
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