PCD tool features
The use of PCD tools for processing aluminum workpieces has the advantages of long tool life and high metal removal rate. The disadvantages are that the tools are expensive and the processing cost is high. This has reached consensus in the machinery manufacturing industry. However, in recent years, the development and application of PCD tools have undergone many changes. The performance of today's aluminum materials is unprecedented. When processing various newly developed aluminum alloy materials (especially high-silicon-content composite materials), in order to optimize the productivity and processing quality, the grade and geometric parameters of PCD tools must be carefully selected to meet different processing requirements. Another change of PCD tools is the continuous reduction of processing costs. Under the combined effect of market competition pressure and improvement of tool manufacturing processes, the price of PCD tools has dropped significantly by more than 50. The above-mentioned changing trend has led to the increasing application of PCD tools in aluminum material processing, and the applicability of tools is restricted by different processed materials.
The correct use of PCD tools
When cutting aluminum alloy materials, tool manufacturers recommend using fine-grained (or medium-grain) PCD grades to process silicon-free and low-silicon aluminum alloy materials. Coarse-grained PCD grade is used to process high silicon aluminum alloy materials. If the surface finish of the milled workpiece does not meet the requirements, a smoothing blade with a smaller grain size can be used to polish the workpiece surface to obtain a satisfactory surface finish.
The correct application of PCD tools is a prerequisite for obtaining satisfactory machining results. Although the specific reasons for tool failure vary, they are usually caused by incorrect use of objects or methods. When ordering a PCD tool, the user should correctly grasp the range of application of the tool. For example, when using PCD tools to process ferrous metal workpieces (such as stainless steel), since diamond easily reacts with carbon elements in steel, it will cause PCD tools to wear quickly. Therefore, the correct choice for machining hardened steel should be PCBN tools.
Generally, in order to reduce the cutting force and prevent the build-up edge, the PCD tool should use a positive cutting angle. However, when processing high-silicon aluminum alloys (especially when PCD tools are used instead of hard alloy tools), the back angle of the PCD tool is preferably slightly smaller than the back angle used by the original carbide tool (such as 250) to improve Cutting performance of PCD tool cutting edge for high silicon aluminum alloy. The positive rake angle of a PCD tool should not be too large, because the tool rake angle is larger , and the cutting edge strength is lower. In other words, the rake angle of the PCD tool is smaller, and the cutting edge is stronger . When preparing PCD tool cutting edges, the diamond tip need not be processed too much. For PCD milling cutters, the cutting edges can be slightly sharpened. In addition, a certain axial inclination of the cutting edge can also help improve the cutting performance of PCD tools.
The successful application of PCD inserts depends not only on the reasonable selection of tool geometry parameters and cutting parameters, but sometimes also requires tool suppliers to provide solutions to problems encountered in the use of tools.Our company has PCD cutters for sale. Welcome new and old customers to come and buy.