Successful tapping processes rely on many important factors, all of which affect the quality of the finished product. The first thing to do is to choose the right tool. It is important to select the correct tap for the part material and the corresponding hole type (through or blind). In addition to selecting the tool, there are other factors that determine the successful tapping, for example, ensuring that the part is securely clamped, helping to eliminate lateral movement. This is necessary because lateral movement can cause the tap to break or result in poor threading quality. If the tap breaks inside the hole, the damage will be catastrophic, especially for parts with high added value. In this case, the only measure usually taken is to send the parts for spark erosion, which wastes a lot of cost and time. It is also important to select the correct bit type before tapping. For example, many customers will forget or ignore the type of drill without the slotted tap. Incorrect selection of the drill bit type results in poor thread quality, reduced tool life and even tap breakage. Other influencing factors include: Correct selection of cutting speed; use of suitable cutting fluid; ensure that the tap enters the hole smoothly, because uneven feeding will cause a "bell" phenomenon (deformation) in the tapped hole. From the beginning of the silk attack selection, you need to try to make things as simple as possible. The first is to consider the material. If steel is used, CoroTapTM is used to machine high quality threads at higher cutting speeds, especially for ISO P materials. The secret of CoroTap's superior performance lies in the technology used, and the blade itself is an important aspect that is suitable for a wide range of wire tapping models and applications. The correct blade design reduces axial forces and torque, making the tool run more smoothly, thus reducing the edge notch, which improves surface finish quality and extends tool life. The rear negative chamfer also helps reduce the risk of torque and chipping when the tap is reversed. Other innovative designs include a large spiral groove design with a machined hole depth of up to 3 XD and excellent chip evacuation. In addition, the tap material (HSS-E-PM) itself is strong and wear resistant and can be used in combination with the CoolTop coating. Sandvik Coromant's newest products, CoroTap 210 and CoroTap 370, deliver the best quality when machining steel materials up to 350HB and minimize the cost of a single hole. In a recent customer case, the CoroTap 210 outperformed the other three competitors' tools when tapping M8 through holes on low-alloy steel workpieces (42CrMo4). When machining at a speed of 25 m/min to 2.5 times the thread depth, the CoroTap 210 completed 3,250 holes before the tool change, exceeding the second place by about 20%. Although CoroTap is the first choice for steel materials, many workshops require a large number of different materials when producing parts. To this end, we have designed a range of taps for a wide range of materials that also have reliable tapping performance when machining stainless steel, steel, cast iron, and even superalloy and non-ferrous materials. These taps, which are suitable for processing a wide range of materials, are particularly suitable for flexibility and the production of mixed materials. The spiral groove profile of the product is optimized to have a constant rake angle along the groove, resulting in high performance and smooth chip evacuation. Taps suitable for processing a wide variety of materials also include extrusion taps whose contours are optimized to produce lower torque and the formed threads have a smooth surface. The extrusion tap differs from the cutting tap in that the former is threaded by the deformation of the part material instead of the conventional cutting action. The key point is to ensure that the workpiece material has good formability: the tensile strength (Rm) should not exceed 1200 N/mm 2 , and the elongation coefficient (A5) should not be less than 10%. If these features are available, the potential benefits are obvious. For example, it has been documented that thread forming is faster than normal thread cutting and the tool has a longer service life. In addition, a typical tool type can be used for different material processing and can be used for through holes and blind holes. The extrusion tap does not produce debris and is often used for strong threads with high peel strength. However, the user must ensure that the extruded taps are drilled with the correct diameter and that sufficient lubricant is used. As with any tooling application, the clamping device is usually as important as the tool itself, as the tapping process is a complex balancing process of tool rotation and axial movement. It is sometimes necessary to limit these movements, because even a small difference between the calculated feed and the actual tap pitch results in extremely high thrust on the tap face, which increases the cutting pressure, greatly reduces the thread quality and shortens the tool. The service life. The SynchroFlex ® ER tapping chuck described in this article is the first choice for tapping on CNC machines. SynchroFlex uses a precision fabricated micro-compensator or "Flexure" that compensates for positional deviations in a small range of radial and axial directions. Therefore, the pressure acting on the tap surface is reduced. In addition, torque is transmitted through the drive rollers and pins rather than through a flexible device. When using a rigid tap adapter such as SynchroFlex, use 100% of the infeed for each process and use the appropriate cutting oil. Multistage Centrigual Pump,Multistage Centrifugal Pump,Multistage Centrifugal Pump For High Head,Multistage Centrifugal Pump Assembly Hengshui Yuanhan Trading Co.,Ltd , https://www.yuanhanpump.com The latest technology
Sandvik Coromant CoroTap 210 
Sandvik Coromant CoroTap 370 a range of taps for a variety of materials
CoroTapTM for high quality threads at higher cutting speeds, especially for ISO P materials Good clamping
SynchroFlex ® ER tapping chucks are the first choice for tapping on CNC machines