[dispatch of net of machine tool of Chinese numerical control] they are used at refrigeration, lubricate and clean cut bits. The respect is machined in cutting, cooling lube has different goal and job, it is right a many-sided person, they can lengthen the service life of the tool, actor to change workpiece surface to reach the processing that cut bits, because this is in economic cutting treatment,have crucial effect. Good refrigeration raises cutting to machined Jen Thing of general manager of company of precision Europe Ha Si automation to describe the utility of refrigerant, he says: "The quantity of heat that treatment of OK and rapid purify nods refrigerant, in case tool or workpiece are outer and tectonic be out of shape, good refrigeration still is helpful for raising the precision that cutting machines, can raise cutting to machine parameter thereby. " according to German federal statistical bureau says, cooling lube occupies the 8%~16% of finished cost, the supply that includes refrigerant among them and clear, and machinery handles relevant cost. Management of product of company of Sandvik Tooling Deutschland and design department manager Dr. Klaus Christoffel explain, "In the total cost that produces in a component, place of cooling lube cost occupies per cent to depend on greatly workpiece, material, machinery and manufacturing concept. In a lot of case, cooling lube cost all holds very large proportion, as a result exceeded proportional tool cost. " graph refrigeration of 1 low temperature has gotten ready push to the market: The full juice of main shaft of Starag milling machine that contains CO2 technology is cooling as before the sufficient reason with full cooling fluid of most common consideration is refrigerant itself not only, still depend on the supply means of its aborning and amount. Can distinguish accordingly different manufacturing idea. In the tradition wet in cutting, tool and workpiece are cooled entirely lube immersion. Christoffel says: "Means of refrigeration of this kind of immersion is the most commonly used choice as before. " member of Paul Horn executive council holds explanation of Markus Kannwischer of chief technology officer concurrently to say, "Because this kind of method is carried out easily,that is, and do not have special requirement to tool and machinery. " cost offerred strong view to use other and lubricant strategy, if every treatment uses up standard dosage one hour,the minim for 5~50ml lubricates (the high-pressured refrigeration of MQL) , 80bar and dry type cutting. Kannwischer offerred current proposal to the user: "Little it is much namely: The profit that supply of the cryogen inside the target lubricates in effective refrigeration and cuts bits to handle two sides is very good. " say according to Nahl, lubricant cutting machines minim to apply to large quantities of quantities to produce especially. Because minim is lubricant,cutting technology need not cool lubricant system (furnish and clear) , can reduce energy to use up (need not cooling fluid pump) , decrease to cutting is handled and reclaim cost, because this can reduce cost. High-pressured refrigeration equipment is welcome in dynamical system application, grob decides to change minim to lubricant cutting technology. According to the requirement with European managing energy, minim is lubricant the technology gets applied extensively in Europe. Nahl says, "Company of a few whole worlds had made drop lubricant technology standard, asia and South-American company use emulsion to have production entirely almost. " high-pressured refrigeration highlights its importance increasingly. Pass high pressure to cool, the passageway that cut bits is dip full refrigerant not simply, cutting however directional supply high pressure is cooling between bits and razor blade lube. "If cooling lube is indispensable, criterion high-pressured refrigeration and cooperation supply photograph union inevitable and beneficial " , the manager Christoffel of Sandvik is judged, he still points out high pressure and large flow are not synchronism, the bulk discharge with cooling high pressure may very small. If use cooling lubricating oil, can use dry type cutting to machine production methods, technology of dry type cutting only applicable a few or the case that does not use cooling air. Hasidi offerred two kinds of solutions: Through exterior and automatic compress air to furnish, constant compression air is directional flow direction cutting tool cuts bits with be being blown. Also perhaps can adopt air of main shaft supply, below this kind of circumstance, air current accumulates discharge to cross a tool to arrive together with high pressure and cardinal principle directly cutting blade. Use N2 or CO2 undertake microtherm refrigeration already was discussed old. Although this kind of method has huge advantage, after application company productivity can rise 70% , service life rises 100% . But, still use microtherm refrigeration to undertake large quantities of quantities are produced without terminal client at present. Thomas Schaarschmidt of manager of branch of application development of & of business of Walter company energy resources says: "At present we are in the phase that begins investment to use " . Graph 2 need cooling lube no longer: Use only compress air directional cross main shaft tool, arriving at security of cutting blade job is pendency problem as before " in auto industry, we also realise, if cooling to microtherm technology undertakes appropriately cutting treatment strategy is adjusted, the application of microtherm refrigeration technology will be beneficial to the service life that improves specific spare parts. " these specific spare partses can be lamina of structural part, turbine and turbine supercharger. In data side, can see the titanium alloy such as stainless steel of TiAl6V4, martensite, austenite and cast of tall refractory steel has very large latent capacity. In addition, worker oneself also had not considered working security issue. Although can pass proper sensor to make sure the worker's person is safe, and main client often also raises this requirement, but the processing problem of the CO2 in still was not being machined in the light of cutting formulates relevant policy. The director of Walter company says: "Nowadays, we are in supplier of client, as mechanical as terminal manufacturer, system, gas supplier and the orgnaization that will handle workplace safety and relevant matters concerned arrange project of a group jointly. " final, handle different mechanical manufacturer issue without practicable CO2 technology as before. All clients have his machine, but not all mechanical manufacturer has this technology. Schaarschmidt says: "Although can undertake changing one's costume or dress below a lot of circumstances, but can consider CO2 technology issue when buying weapon newly normally " . Change his costume or dress to need additional investment possibly the expenditure of about 50 thousand euro. 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