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Machining process analysis of thin wall pipe sleeve

In pipe sleeve processing, operators should first understand the function and process characteristics of thin-walled pipe sleeve, and carry out mechanical processing according to the actual situation. In the process of rough machining and forming finishing, starting from the characteristics of thin-walled pipe sleeve, effective processing technology is adopted to ensure the processing quality of thin-walled pipe sleeve, and more importantly, to promote the processing level of thin-walled pipe sleeve again. From this topic, this article focuses on the safety of the machining process of the pipe sleeve.

Nowadays, the thin-walled pipe sleeve has attracted the close attention of the machining industry. It is necessary to strengthen the innovation of processing technology, improve the mechanical processing mode, and pay more attention to the processing process. The perfect management system is used to strictly require the operators, and strict technical regulations are proposed for the processing process, so as to improve the professional skills of the operators. The influencing factors of machining quality are analyzed. According to the size and shape of the thin-walled pipe sleeve, the error is effectively controlled, and the machining accuracy of the pipe sleeve is determined according to the position relationship between the processing pipe sleeve and the props in the processing link. On this basis, not only the machining accuracy of the pipe sleeve is ensured, but also the geometric accuracy and rigidity of the pipe sleeve are better protected.

Influence factors of machining quality of thin-walled pipe sleeve

Machining accuracy refers to the error between the size and shape of pipe sleeve machining and the set requirements under ideal condition. Due to the different machining tools, the machining accuracy of the pipe sleeve is different. Therefore, in the whole process of processing, it is necessary to accurately grasp the size of various types of pipe sleeves to avoid large machining errors and effectively reduce the impact of processing technology on the quality of thin-walled pipe sleeves. The main factors affecting the machining accuracy of the pipe sleeve are: the geometric accuracy and rigidity of the machine tool, the shape and deformation characteristics of the cutting tool, and the shape of the pipe sleeve. According to the practice, the main reasons for the deformation in the processing of the thin-walled pipe sleeve are reflected in these aspects: the influence of welding technology: at present, most of the pipe sleeves are welded with steel plate, and some aluminum pipe sleeves are in the process of processing Because the welding stress was not eliminated in time, these stresses were released in the subsequent production, which eventually led to the change of pipe sleeve shape. The pipe sleeve deformation was caused by errors in the clamping process, because each pipe sleeve needs to be clamped in the processing process, but some personnel did not adopt the appropriate clamping process in this process, resulting in pipe sleeve deformation.

Processing features of thin wall pipe sleeve

The process characteristics of thin-walled pipe sleeve in the processing link is special. In actual processing, we need to attach great importance to the processing process. Taking aluminum material as an example, the toughness, plasticity and adhesiveness of the material itself are very strong, so it is impossible to separate and cut it. In the process of processing, the appearance of knife tumor affects the smooth development of follow-up work. Part of the aluminum alloy thin-walled pipe sleeve has poor rigidity, so in the use process, it is necessary to strictly control its processing technology, pay close attention to the machining process of the thin-walled pipe sleeve, use effective processing technology and cutting tools to achieve effective cutting, avoid material plastic deformation, so as to better meet the production requirements.

Machining process and main technology of thin wall pipe sleeve

Preparation before machining

To understand the geometric characteristics of the materials to be processed, to clarify the influence of the properties of the materials to be processed on the machining accuracy, mainly to improve the machining accuracy, to understand the relationship between the initial residual stress of the blank and the section size and deformation, and to understand the deformation degree and influence range according to the change of the residual stress in the thin-walled pipe sleeve during the machining process, so as to improve the safety awareness. In order to prevent the deformation of the thin-walled pipe sleeve, the plasticity of the material to be processed should be known in advance, so as to effectively control the joint effect of thermal stress and cutting resistance. Clamping is the preparation of processing technology, which needs to be prepared in advance. If the clamping force is too large, the thin-walled pipe sleeve will deform due to extrusion in the process of processing, which will not only cause the station to move, but also cause the quality of machining not to meet the requirements.

Master material properties in processing

According to the requirements of machining, before carrying out machining activities, operators should ensure that the follow-up work can be carried out smoothly according to the characteristics of materials. Based on aluminum alloy materials, timely select the appropriate processing technology and equipment, predict the possible accidents in the processing process, strengthen the investigation of potential safety hazards, and improve the safety awareness of operators. If the tool is not suitable, it will cause damage to the material. Therefore, we should pay attention to this point, timely determine the processing benchmark, pay attention to the thermal deformation of the processing link, and carefully handle the benchmark to ensure that the material surface has a certain degree of smoothness and smoothness. For the convex parts of the datum plane, such as burr, flash, etc., they should be carefully cleaned and clamped to ensure the stability of the thin-walled pipe sleeve in the whole processing process.

Selection of cutting tools during machining

According to the geometric shape and cutting parameters of the cutting tool, the machining task should be arranged reasonably, the radial cutting force of the machining link and the deformation of the thin-walled pipe sleeve should be paid attention to. The tool rake angle is determined according to the shape and cutting deformation of the cutting tool. Once the cutting rake angle is too large, the friction force of the cutting link will be reduced. Therefore, the size of the tool rake angle should be reasonably selected. Cutting parameters directly affect the cutting force. In rough machining, feed rate should be strictly controlled, high quality cutting technology should be adopted, and the deformation of thin-walled pipe sleeve should be paid attention to, so as to effectively monitor the machining process. According to the shape of the thin-walled pipe sleeve, timely optimize the machining scheme, fully aware of the lubrication effect. For example, in the cutting process, according to the actual situation, the operators cut down the friction force on the surface of the processing pipe sleeve in turn. This technology can reduce the damage to the surface of the pipe sleeve during the cutting process, so as to improve the machining performance of the thin-walled pipe sleeve. Understand the vaporization phenomenon in the cutting process, ensure the good contact between the thin-walled pipe sleeve and the tool, timely understand the part of heat on the thin-walled pipe sleeve and the cutting tool, pay attention to the degree of energy loss, so as to improve the accuracy of tool cutting and the processing quality of thin-walled pipe sleeve.

Precautions for rough machining

In the process of rough machining, operators pay attention to the characteristics of aluminum alloy materials, and carry out effective processing according to the size and roughness of aluminum alloy materials. In the process of mechanical processing, first understand the shape of thin-walled pipe sleeve and eliminate its working allowance in advance. Clear the principle of mechanical processing, materials in the processing link will appear different friction, resulting in material dislocation, pipe sleeve deformation, etc., once this situation occurs, we must take effective measures to change the preset size of the pipe sleeve in time to ensure the actual dimensional accuracy of the thin-walled pipe sleeve. For the thin-walled pipe sleeve with special shape, roughing is carried out first. During cooling treatment, the influence of working heat on machining quality is paid close attention to, the change of pipe sleeve structure is paid attention to, and the residual stress inside the pipe sleeve is treated by cooling annealing method. It is easy to redistribute the stress in the pipe sleeve by means of cooling and annealing, so as to avoid the deformation of the thin-walled pipe sleeve in the machining process.

Reasonable selection of clamping mode

The datum plane of thin-walled pipe sleeve is determined before pipe sleeve processing. After rough machining, there are two types of thin-walled pipe sleeve: wave surface and drum surface. In order to better meet the requirements of thin-walled pipe sleeve on machining standards, timely support is needed. The adjustable screw rod is added at the bottom of the pipe sleeve, and the pipe sleeve is clamped by the screw rod to keep a good clamping force and ensure the balance of the clamping force. According to the set work requirements, the deformation of the thin-walled pipe sleeve in the processing link can be effectively prevented, so as to improve the machining quality and ensure the normal use of the thin-walled pipe sleeve.

Conclusion

This article mainly describes the processing technology of the thin-walled pipe sleeve. Firstly, it introduces the influencing factors of the machining accuracy: the size of the material to be processed, the shape of the tool, the clamping force, the welding stress, etc. in the actual processing process, according to the actual situation, timely adjust the machining scheme, and clarify the processing characteristics of the thin wall pipe sleeve. According to the properties of the material to be processed, the clamping method should be selected reasonably, the preparation work before processing should be done carefully, the cutting technology with high quality should be adopted, the radial cutting force of the machining link should be paid attention to to to ensure the good contact between the thin-walled pipe sleeve and the cutter, the change of pipe sleeve structure, and the residual internal pipe sleeve should be handled timely Stress, thereby enhancing the machining accuracy of thin-walled pipe sleeve.

Source: China Pipe Sleeve Manufacturer – Yaang Pipe Industry (www.epowermetals.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@epowermetals.com

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