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Analysis of Influencing Factors on Failure of Internal Thread Cold Extrusion Tap

Analysis of Influencing Factors on Failure of Internal Thread Cold Extrusion Tap

Cold extrusion of internal thread is a metal plastic processing method that uses extrusion tap to process internal thread. It has the characteristics of high material utilization, high processing accuracy, low surface roughness, high mechanical strength and strong fatigue resistance. Xu Jiuhua et al. carried out experimental research on extrusion strengthening of 300M high-strength steel internal thread. The results show that the fatigue performance of cold extrusion internal thread is significantly improved compared with that of cutting thread. Under the same conditions, the life of cold extrusion thread is 4-30 times that of cutting thread; Zhao Qingrong et al. studied the influence of process parameters such as the diameter of the bottom hole of the

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Z-Tech

How to quickly identify the quality of tap?

There are numerous tap brands on the market. Due to the different materials used and grinding methods, the price and quality are confused, which makes the buyer feel like a flower in the mist and don't know how to choose. Here is how to quickly identify the quality of taps.

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In addition to the reasonable use of oil, what should be paid attention to in tapping process?

In addition to the reasonable use of oil, what should be paid attention to in tapping process?

Tap, also known as tap, is a widely used tool for thread hole processing. The problems often occur in tapping process of tap include: fracture, chipping, wear, etc. It has seriously affected its normal service life and added cost pressure to the factory. Why does the tap break, break and wear? It can be analyzed from the following aspects:

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Experience sharing of large-span gantry installation technology!

Experience sharing of large-span gantry installation technology!

Experience sharing of large-span gantry installation technology!

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Who has the greater advantage in the difference between thread milling cutter and tap tapping?

Who has the greater advantage in the difference between thread milling cutter and tap tapping?

Thread milling cutter has many advantages. It has great advantages over tapping. Thread milling cutter is more than ten times faster than tapping and has high accuracy, The surface roughness is good. The same pitch can be used to obtain large and small holes. The drilling and milling thread chamfer can be formed at one time. After breaking, it will not be taken out like a tap, and the resistance of the machine tool is also small.

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What are the common shapes of grinding wheels?

What are the common shapes of grinding wheels?

The selection of shape and size should be based on the grinding machine conditions and workpiece shape. The shape of the grinding wheel should be described by the emerald: Common grinding wheel shapes include flat grinding wheel (P), single-sided concave grinding wheel (PDA), double-sided concave grinding wheel (PSA), thin grinding wheel (PB), cylindrical grinding wheel (N), bowl-shaped grinding wheel (BW), dish-shaped No.1 grinding wheel (D1), etc. The shape and size of the grinding wheel that can be used by each grinding machine have a certain range. If possible, the outer diameter of the grinding wheel should be selected as large as possible to improve the linear speed of the grinding wheel and obtain higher productivity and surface quality of the workpiece. The same effect can be achieved by increasing the width of the grinding wheel. Writing order of current national standard grinding wheel: grinding wheel code, size (outer diameter × Thickness × Aperture), abrasive particles, particle size, hardness, structure, binder, maximum working line speed. Example: P 400 × one hundred and fifty × 203 A 60 L 5 B 35

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Z-Tech

We will continue to innovate, provide more and better services, build intelligent Chinese enterprises and become smart entrepreneurs!

Technological innovation is the key to core competitiveness. Digital China has built a strong IT R&D and operation team, with nearly 2000 software R&D personnel, and is the chairman of the "Changfeng Alliance Internet Information Service Industry Promotion Working Group" of the Ministry of Science and Technology. In a real sense, it has put forward a SaaS service system with Chinese characteristics, and built standards and specifications suitable for China's IT service operation with SPS as the core. In terms of ICT infrastructure, Digital China has established professional data centers in Beijing, Guangzhou, Suzhou and other places, realized the interconnection of North-South Telecom, built a highly secure and reliable network environment, and has more than 3000 operating equipment; Through the establishment of joint laboratories with NetApp, HP and other companies, computing pooling and storage pooling have been realized; In the field of e-commerce, we have pioneered the development of an e-commerce platform with on-demand services and personalized services. It has applied for more than ten technical patents and has become a pilot enterprise of patent engine in Beijing. The Group believes that in the information era of economic globalization, informatization will become the only way for small and medium-sized enterprises to improve their competitiveness, and e-commerce will become the key path for enterprises to realize informatization. Therefore, the Group will continue to focus on promoting the e-commerce and informatization process of small and medium-sized enterprises in China, continue to innovate, continue to provide more and better services, build intelligent Chinese enterprises, and achieve smart entrepreneurs!

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2022

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Z-Tech

Technological innovation is the key to core competitiveness

Technological innovation is the key to core competitiveness. Digital China has built a strong IT R&D and operation team, with nearly 2000 software R&D personnel, and is the chairman of the "Changfeng Alliance Internet Information Service Industry Promotion Working Group" of the Ministry of Science and Technology. In a real sense, it has put forward a SaaS service system with Chinese characteristics, and built standards and specifications suitable for China's IT service operation with SPS as the core. In terms of ICT infrastructure, Digital China has established professional data centers in Beijing, Guangzhou, Suzhou and other places, realized the interconnection of North-South Telecom, built a highly secure and reliable network environment, and has more than 3000 operating equipment; Through the establishment of joint laboratories with NetApp, HP and other companies, computing pooling and storage pooling have been realized; In the field of e-commerce, we have pioneered the development of an e-commerce platform with on-demand services and personalized services. It has applied for more than ten technical patents and has become a pilot enterprise of patent engine in Beijing. The Group believes that in the information era of economic globalization, informatization will become the only way for small and medium-sized enterprises to improve their competitiveness, and e-commerce will become the key path for enterprises to realize informatization. Therefore, the Group will continue to focus on promoting the e-commerce and informatization process of small and medium-sized enterprises in China, continue to innovate, continue to provide more and better services, build intelligent Chinese enterprises, and achieve smart entrepreneurs!

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