Editor's Note: Cutting fluid is an indispensable processing medium in metal processing. It can cool and lubricate tools and workpieces, which can significantly extend tool life and improve product quality. With the increasing popularity of CNC machine tools, the use of cutting fluid has increased year by year. However, the majority of users have various shortcomings and misunderstandings about the cutting fluid. The selection of processing technology and cutting fluid is relatively random, resulting in high process cost, difficult product quality, serious environmental pollution, and may even affect the health of employees. We specially invited several representatives of cutting fluids to talk about how they use cutting fluids, and what problems they encountered in using cutting fluids and suggestions for manufacturers, for your reference.
Tianrun Crankshaft Co., Ltd. Song Wenyou
Our company is the largest professional manufacturer of crankshafts in China with the production of “Tian†brand engine crankshaft as the leading product. The company has a German KW casting line with an annual output of 500,000 crankshaft blanks, 150,000 German BECHE forging production lines, an Austrian gas soft nitriding crankshaft production line and a German car crankshaft production line, as well as developed countries such as the United States, Italy, the United Kingdom, and Germany. The cutting-edge processing and testing equipment has an internationally advanced heavy-duty truck, medium-card, light truck and car crankshaft machining production line, with an annual output of more than 1 million forged steel crankshafts and ductile iron crankshafts.
In the machining process, in addition to dry milling for internal milling or external milling, the cutting media are equipped. At present, there are many suppliers, brands and varieties of cutting fluid products, and the range of choice is also wide. The principle is that the cutting performance and the conditions of use must be met. That is, it should have good lubrication, cooling, anti-corrosion, anti-rust and cleaning performance, long service life or recyclability. In the process of processing, it can meet the process requirements, reduce tool or grinding wheel loss, reduce the surface roughness value, reduce power consumption and improve production efficiency. To meet the environmental protection requirements stipulated by national regulations, the green cutting fluid is the first choice to ensure the safety of operators. Equipment lubrication, protection, and use requirements should also be met.
In order to meet the above conditions, first of all, according to the processed materials and process conditions, read the instructions provided by the manufacturer or the use of professional guidance, that is, it is inevitable to encounter some problems . For example, when a certain type of cutting fluid is used to grind the spheroidal material crankshaft, although the surface roughness of the grinding is good. However, after using it for a period of time, it was found that the surface of the machine tool and the crankshaft adhered to the small block-like deposits to varying degrees. In addition to this, there are often many foams in the cutting fluid. Also, when the temperature is low, it is prone to solidification and high odor when the temperature is high.
Tianrun uses water-capable cutting fluids and cutting oils in the cutting media used. The water-capacity cutting fluid is disposed of according to the date of use or the number of workpieces processed. The iron-cut surface of the grinding wheel formed during the cutting of the cutting oil is mixed with the waste cutting oil, discharged into the collecting box by the machine tool cutting device, and sent to the oil press for recycling. It is eliminated during the processing of the fume oil mist on the random bed of the exhaust facility.
Due to the large number of processing equipment, Tianrun uses a large amount of cutting media, in order to ensure product quality, improve cutting performance and reduce costs. According to the adverse consequences of the past, the selection, testing, trial use, promotion and use of cutting media used in various types of machine tools have been standardized. Compared with the past, it has reached a good level of “ doing its best â€. Despite this, some difficult problems are encountered during the machining process, such as grinding cracks or vibration edges on the workpiece surface. It is hoped that the cutting fluid supplier can explain the degree of correlation and solutions from the use or theory.
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