Cast-iron treatment and cutting tool

4% used derv motor. The memory that the derv engine that the market introduces first 20 years ago keeps to people is noise plangent, black smoke blast blast, taste is bad, accordingly, car market of the United States is right all the time its demand is very little, compare to it, in the car that sells in Europe at present 60% provided derv engine. But, if light fat price to continue to rise, we can see consumer can turn possibly and favour derv engine. Besides these change, there still is change of a kind of mode in machining craft. In going 10 years, the rate of production treatment is rising steadily all the time. Until before long previously, still use special treatment cutting tool rarely, and major treatment machine tool also contains many optional main shaft rarely. Treatment of high speed cutting suits to be produced by the big batch component of cost drive very much, and the characteristic that this is automobile manufacturing industry. The advantage with squirm cast-iron Chinese ink is casting pig medicinal powder the intensity of hot sex and nodular cast iron and collect of stretch model quantity at a suit. However, it has a kind of appearance to be similar to the black lead structure of anthozoan, have everybody accepted quite hard pilot chemistry composition. As manufacturer (be in especially truck manufacturing industry) the material that squirm Mo Zhu iron regards derv engine as to choose, they are facing all sorts of treatment challenges such as the workpiece quality, cutting tool life that casts hard and machine down time, all these challenges strangle its gain ability possibly. But, if use appropriate cutting tool to process these data, perhaps can prove about iron of squirm Mo Zhu but cutting sex is extremely flabby sexual view is a little exaggerated. Although get together,nitrogen of brilliant cubic metre changes boron (PCBN) already was proved to be the material of cutting cutting tool with a kind of outstanding performance, the cutting tool life that grows almost indefinitely can be reached when cutting casting pig. But regretful is, when machining nodular cast iron and iron of squirm Mo Zhu with it, can be dissolved by chemistry the influence of action. In these treatment, cutting tool material and cast-iron in the higher volume that contain iron interaction, can cause cutting tool to wear away quickly thereby. This one difficult problem promoted development one kind can resist the demand of the cutting tool brand of chemistry. To process these new-style and cast-iron data, requirement cutting tool should raise wearability already, should have first-rate tenacity again -- and these two kinds of function are very difficult at the same time of give attention to two or morethings. Challenge to answer this to plant, a lot of tool manufacturer can provide these two kinds of performance in main development the cutting tool of best combination. These razor blade are coating brand for the most part, they will be tall the CVD of hardness is multilayer coating, fight metabolic horniness matrix, and rich cobalt (in order to raise the tenacity of cutting blade) matrix / coating interface is perfect union rises. Design these rough machining to use multilayer CVD coating brand is to raise wearability and cutting rate, make they can be used at treatment to have the cast of tall abrasion, clip may exist in these cast field trash of arenaceous, surface, oxide and other meeting cause cutting tool fast tatty material. The result of treatment field test to brand of coating of this kind of CVD is very significant. Undertaking interior to spare parts of bearing of a kind of nodular cast iron intermittent when rough machining, compare with photograph of razor blade of rough machining of a kind of ISO-P20, the cutting tool life of CVD coating brand raised 2 times. In the experiment that machines clutch spare parts in cutting, cast-iron treatment brand and this company's more vintage TP100 brand undertook the TK2000 that uses firm of hill tall cutting tool contrast, the result makes clear, the work number that every machine TK brand cutting tool increased 67% . If consider cutting tool cost inside with the time that change a knife, of function of this kind of cutting tool raise a likelihood to mean annual but managing finished cost 20 thousand dollar. Although nodular cast iron is mixed,increasing ceaselessly with the application with squirm cast-iron Chinese ink, but the application of casting pig still strong. In automobile manufacturing industry, still can continue to withhold many casting pig to machine (especially beat of apply the brake and apply the brake dish) . Nevertheless, the treatment condition nowadays has differred somewhat with the past, before cutting speed has compared 10 years, rose about 305m/min. The higher temperature that high speed cutting produces may dissolve the coating hard alloy of cutting razor blade, the chemical reaction that produces between its means and PCBN and ferrite is very similar. Be destroyed to prevent coating hard alloy, prevent heat in metal cutting to enter matrix, tool manufacturer is increasing the alumina in cutting tool coating ceaselessly the ply of the layer. In addition, more important is to improve these multilayer the structure of coating, make its have better tenacity and wearability. The high speed that is casting pig is machined (cutting speed can be as high as 550m/min) and the heat-resisting new name that designs technically already throw on the market. What these at high speed cutting using is multilayer alumina was included in coating (Al2O3) the carbolic nitrogen of thick coating and tall hardness changes titanium (TiCN) layer (it can make cutting tool maintains tall wearability for long, in order to improve productivity) . Using apply the brake of casting pig of rough machining of brand of new-style coating heat-resisting dish in the spot treatment test of the spare parts (cutting speed limits: 400 - 658m/min) , with use nitrogen photograph of razor blade of the pottery and porcelain that change silicon is compared, cutting tool life raised one times, productivity rose 20% . Of this kind of productivity because heat-resisting brand has better cutting blade tenacity,rising is, make its can use higher than razor blade of pottery and porcelain feed rate. Anyhow, all requirement that these elements raised more exceedingly good to function cutting cutting tool, it is the workpiece stuff with taller, older abrasion, OK that people asks these cutting tools can machine intensity use higher cutting rate, can provide consistent cutting tool at the same time life and ensure spare parts quality -- to a razor blade, this is very high demand really. Use nodular cast iron makes manufacturer produces a weight likely the part with lighter, smaller bulk, the intensity of the spare parts won't sacrifice again in the meantime; And compare with casting pig photograph, the mechanical intensity with squirm cast-iron Chinese ink and fatigue intensity can raise one times. But regretful is, these advantages also brought the challenge on treatment at the same time. Compare with casting pig photograph, nodular cast iron and casting of squirm Chinese ink contain more silicon in iron, and the abrasion that silicon can increase material, accelerate cutting tool greatly wear away speed. In addition, these cast-iron textures also differ with casting pig, the black lead grain in casting pig submits a form, make its compare easy cutting. And the black lead grain that includes in nodular cast iron is shown globose, ferrite is all round. Below certain circumstance, machining nodular cast iron to need the bit amount that spend may be 3 times when machining casting pig. Another element that the consideration needs when machining casting pig is, job shops likes to use cooling fluid to control by cast-iron the dust that medium black lead produces and contamination, prevent cutting temperature at the same time exorbitant. Because a large number of heat in metal cutting pass into workpiece to be able to make its produce heat to expand, had caused thereby cut. But adverse is, the temperature wave motion that use cooling fluid causes may cause hot crack, shorten thereby cutting tool life. The heat-resisting coating brand that suits dry type cutting can use higher cutting rate and feed rate, make workpiece finishs cutting before producing overmuch heat in metal cutting, and it can replace razor blade of pottery and porcelain. Machining casting pig apply the brake dish in field test of dry type cutting, compare with the photograph of razor blade of pottery and porcelain that uses before, the TK1000 brand of use hill high company can make cutting tool life rises 60% , productivity rises 20% . In whole automobile manufacturing industry, from truckload assemble a factory till supplier of 3 class component, exist increase " light-off is produced " (namely unmanned value defends treatment) trend, means of this kind of treatment comparatives in big batch production common. After the user hopes to be able to hold work in machine tool jacket, make it whole carry advancing travel is machined automatically late, need a robot to come only in charge of it. Accordingly, cutting tool must have enough reliability, can make machine the workpiece that come out to have very good consistency every time, size variation is dinky. In the past, of the user the biggest complain one of it is each batch the machinability of cast-iron workpiece is abhorrent. To them, when processing the first batch of work, every point of a knife of bit can machine 100, and when processing the 2nd batch of work, every point of a knife can machine 50 ― only 60 circumstance is not rarely seen. The change of some and cast-iron composition concerns this kind of situation, some are concerned with climate -- these elements are treatment personnel is uncontrollable. Nevertheless, a lot of tool manufacturer are developed in effort can solve workpiece material machinability the cutting tool of abhorrent problem. The purpose is to be an user to offer can maintain the workpiece amount that can process to stabilize from beginning to end -- although the machinability of workpiece exists difference -- cutting tool. Raise tenacity, intensity and wearability to will make these new cutting tool names can get used to the change of workpiece material, can solve the interrupted cutting problem that spare parts of close clean figuration machines at the same time. If cutting tool itself has very high reliability, the changeability that does not need pair of workpiece data undertakes monitoring with adjust. To American automobile manufacturing industry, the very demand that machines to casting pig makes its remain a crucial fractionize market, use up this kind of treatment on fact of be in charge a lot of had transferred abroad. To contend with photograph of this kind of trend, tool manufacturer will continue to develop the special cutting tool that conduces to innovation machining craft. These new-style cutting tool estimate full lumping weight the workpiece stuff with lighter, more expensive intensity (like iron of Mo Zhu of nodular cast iron, squirm, and even aluminium alloy and magnesium alloy) machine demand, and the treatment market of these material is rising quickly. CNC Milling