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Hard Alloy Development Of

Hangzhou JWG Technology Co.Ltd | Updated: Jul 25, 2017

Large cylinder section parts and more use of high strength, Hard Alloy high temperature special steel 2.25Cr-1Mo-0.25V, in the rough process, the amount of material removal and back knife are very large, Hard Alloy so that the cutting zone temperature up to 1000 ℃ , Resulting in carbide cutting tools in the actual processing failure is more serious, such as tool wear failure, Hard Alloy chipping, Hard Alloy bonding damage and so on. Hard Alloy With the development of modern science and technology, high temperature toughness, Hard Alloy high temperature viscosity of the hydrogen cylinder tube materials more and more widely used, Hard Alloy but its poor machinability, Hard Alloy especially the cylindrical forging rough surface cover contains a lot of Mn, Cr And Fe and other high hardness elements, so that in the cutting process of the workpiece - the tool - chip contact surface will be intense friction, Hard Alloy so that the cutting zone temperature, high temperature reaction to the tool to accelerate the wear or damage of the knife, Hard Alloy so that the final failure. Li Yimin and other on the carbide cutting tool titanium alloy when the wear rate of the rake face numerical simulation, and studied the impact of diffusion wear rate factors. Li Zhenjia, etc. Hard Alloy to establish a variety of conditions under the cutting heat model, and cutting the heat caused by a lot of damage to the tool. However, there are few studies on the cutting wear of the large cylinder section. Therefore, Hard Alloy the wear of carbide cutting tools in the cutting process is studied, and the influence of cutting temperature on the wear of the tool is expounded. Hard Alloy It is of great practical significance and application to the production efficiency of heavy and high efficiency cutting and the construction of major chemical engineering and nuclear power projects in China value.

In the CA6140 lathe on the test, Hard Alloy the use of SCMT120408-MR carbide blade on the workpiece material 2.25Cr-1Mo-0.25V steel for cylindrical dry turning, the test device shown in Figure 1. The temperature was collected by Thermovision A40M thermal imager, Hard Alloy and the blade was removed from time to time. The wear and tear morphology of the front and the flank face were observed by FEL Sirion scanning electron microscope and KEYENCE VHX-1000 superview deep microscope respectively. The wear elements of the wear parts are analyzed and the wear mechanism of the carbide cutting tools is discussed. Practice shows that the cutting speed in the cutting speed of the greatest impact on the tool wear, in order to make the test more targeted, Hard Alloy fixed cutting depth and feed, the use of different cutting speed for single factor test, each set of two blades, cutting The amount is shown in Table 3.Hard Alloy By examining the relevant literature and combining with the actual machining process, Hard Alloy the tool wear effect is obvious for every 3 minutes of cutting. Therefore, the front and the flank wear of the two sets of tools are observed with the super-depth deep microscope every 3 minutes. The elements of the front and the flank face were analyzed by scanning electron microscopy


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