High-powered the application that exceeds hard coating cutting tool

6m/min, pouring emulsification cutting fluid, discharge 5L/min. Graph the 1 ion that note Co and the tap cutting that did not note Co ion age in process of wear process tap, infuse Co ion and the wear process that did not go up at the back of the tap cutting tine of infuse Co ion are shown 1 times like the graph, when length of general attack silk is 4m, wear extent goes up at the back of the tap cutting tine of infuse Co ion for 0.

15mm, not the wear extent of infuse Co ion is 0.

4mm, because this infuse Co is ionic the cutting life of its tap relatively not infuse Co rises ionicly 1.

5~ 2 times. (A) notes Co ionic tap (B) did not note Co ionic tap to pursue go up at the back of 2 tap tooth wear away configuration plan is shown 2 times wear away to go up at the back of tap cutting tine configuration. After graph 2(a) is the tap cutting that uses infuse Co ion, what generation is in along edge at the back of tooth is to wear away equably; Graph 2(b) arose to wear away badly to edge corner was not located in to be in at the back of the tap tooth of infuse Co ion and accompanying collapse blade. Cutting experiment makes clear, after tap surface is handled through modified, its wearability and impact resistance were obtained rise significantly, go up at the back of its cutting tine wearing away is to be in slow fall with even circumstance undertake. In addition, undertake to broach of F6mm high-speed steel infuse Co ion is handled, drill the hole that cuts material of 1Cr18Ni9Ti stainless steel with it, getting cut F=0 of speed Vc=12m/min, feed.

Below the condition such as fluid of cutting of 12mm/r, use emulsification, average bore number is 423 aperture, and use the bit without processing average bore number is 67 aperture, 6 accordingly former cutting efficiency is latter.

3 times. Make clear according to the material that already published, the cutting life of the broach of infuse Ti ion is not 7 times of infuse Ti ion; The cutting life of the Pan Xi knife of infuse Ti+C ion relatively not infuse Ti+C raises 2~4 ionicly times. 2 multivariate and multilayer exceed hard coating tap to be in wait for the base that has coat to go up with TiC, Ti8 to cutting tool, considered to undertake to cutting tool further multivariate and multilayer exceed hard compound coating, among them of TiC+TiCN series multivariate and multilayer big already batch uses compound coating at cutting tool coating, achieved favorable result. Current and commonly used multivariate coating has TiN, TiC, ZrN, TiAlN, DLC, multilayer and compound coating has TiCN+TiN, TiN+TiC+DLC, TiN+TiAlN to wait, mechanical function introduces their main physics as follows. TiCN+TiN: Hardness 3100~3400HV, velar layer is integrated what nitrogen changes titanium is impulse withstand the characteristic of the tall hardness with carbonization titanium and wearability, the coefficient of friction between velar layer and steel is small, fight oxidation temperature to amount to 650~700 ° C, have admirable physics and mechanical property. TiAlN: Hardness 3400~3600HV, wearability only under kind diamond film, it is current international tool industry most of praise highly exceed hard coating. ZrN: Hardness 2000~2100HV, its wearability is 3 times of TiN coating, this film layer and high-speed steel matrix have very firm union strength, because this has very tall impact resistance, its fight oxidation temperature to be 500~700 ° C, velar layer is beautiful and show weak golden scene. We are right afore-mentioned of all kinds the craft that exceeds hard coating had long-term research and practice, be besmeared all sorts of cutting tool in use that make have better effect, among them TiCN+TiN is multivariate and multilayer the experiment is approved in undertaking on the automatic product line that coating tap is making car part (350 tap) , its are collected numerous car to make the assessment with very high limited company as a result by Shanghai, aborning of this coating tap uses a circumstance to be as follows. TiCN+TiN is multivariate and multilayer the norms of compound coating tap is M12 × 1.

5, attack those who cut hardness 220HBS is cast-iron a screw, tap speed Vc=6.

5m/min, final cutting effect is average every tap is attacked make 1172 screw, tap efficiency rises on average 5.

59 times, and this tap is not had in tap process rupture. Pursue 3 it is to be in the coating tap below changes on transfer matic, can see go up to arise only at the back of tap tooth lesser and even wear away normally, and go up at the back of corrective tine have not appear to wear away apparently, collapse blade phenomenon did not see on each tooth, this tap is connecting general reason condition to fall to still can continue to use. Graph 3 TiCN+TiN is multivariate and multilayer wear out condition goes up at the back of tooth of compound coating tap when the element of function of cutting of cutting tool of 3 influences coating is using cutting tool of new-style high-powered coating, the cutting result that likelihood occurrence short of expects, this has a lot of elements to cause. For example coating equipment, craft and coating technology, quality and function, some elements can reach further research through long-term practice, improve will be solved gradually. Issue of side of concerned coating quality is undertaking multivariate and multilayer before compound coating, need is explored mainly and solve multilayer between tantalum optimal cooperate, of velar layer early or late order and its different ply, the craft parameter of reasonable control coating reachs stress issue. Want to undertake sampling detecting to coating film, determine the physical machinery function such as velar layer ply, distributinging uniformity, adhesion, wearability and hardness. Issue of side of quality of matrix of concerned cutting tool is on matrix of high quality cutting tool have high quality coat, ability has high-powered coating cutting tool. Ensure the quality of cutting tool matrix, the matrix organization after the finish machining craft that should value the part that reachs preform of control cutting tool, content and cutting tool, heat treatment and hardness, we ever were mixed to same norms precision but two kinds of tap of different manufactory undertake multivariate and multilayer compound coating, the cutting life when these two kinds of tap are being used has 0.

3~0.

The difference of 5 times. In addition, after precision work of some tap classics, put in slight gap on edge, these breach can be brought about cannot become film or velar burst, collapse blade or point crack arise when be being used consequently. The structure of cutting cutting tool and geometrical parameter the main factor that this also is function of cutting of influence coating cutting tool, for example we ever were mixed with the dip that take blade respectively do not take blade dip tap to undertake infuse Co ion is handled, they are attacked in same condition respectively make stainless steel screw, the dip that take blade the tap cutting life of infuse Co ion rises apparently. Additional, 29 ° of ≈ of Gf of the horn before be being used respectively and Gf<10 ° the tap cutting of infuse Co ion, their cutting effect all not quite remarkable. Anyhow, to the promotion application of cutting tool of new-style high-powered coating, want to assure the quality of modified coating strictly not only, and the quality that should assure cutting tool matrix more and function. CNC Milling