Category: Manufacturing Technology knowledge

How to repair the refrigerator when it breaks down? A refrigerator is a mechanical device that uses a compressor to change the pressure of refrigerant gas to achieve low-temperature refrigeration. It is useful in many equipment, such as central air conditioning. Generally, the refrigerator uses the tubular heat exchanger to complete the material heat exchange. When the carbon steel tubesheet is used as the cooler, the welds between the tubesheet and the tubular often have corrosion leakage. The leakage into the cooling water system will cause material waste and environmental pollution, and even affect the safety production of the enterprise…

NC machining technology is derived from conventional machining technology, which is an organic combination of conventional machining technology, computer numerical control technology, computer aided design and auxiliary manufacturing technology. With the continuous development of technology, more and more parts need to be precision machined in modern manufacturing industry, and the requirements for machining accuracy and surface complexity of workpieces are becoming higher and higher. Therefore, NC machining has been widely concerned, but in terms of cost saving, NC machining is still higher than traditional machining. Next, we will specifically introduce the difference between CNC machining and traditional machining technology. 1.…

In machining, the cutting tool is the basic process equipment for cutting. It is in direct contact with the parts to be processed. Different cutting tools can process different part structures and parts surfaces, which plays a vital role in machining. It can be called "industrial teeth". As a consumable, the tool itself has a certain life. Different materials and different specifications have different life; For mass production, tool consumption also occupies an important part in the processing cost. Therefore, improving tool life, controlling tool consumption, reducing processing cost and improving production efficiency are the common problems faced by manufacturing…

Under the background of the continuous integration of informatization and industrialization, information technology has penetrated into all links of the industrial chain of industrial enterprises, and the amount of data owned by traditional industrial enterprises is increasingly rich. Big data analysis has brought a new dimension of manufacturing industry research and trend analysis. From the perspective of new multi-dimensional functions and expanded fields, data has become the compass leading the growth of manufacturing industry. The fundamental strength of big data analysis lies in the quality of data, and the source of data naturally becomes the top priority. At present, the…

The most important ten items for mold design learning: mold steel, structural design, mold processing, standard parts, flying mold, polishing / leather, mold assembly, cooling water path, and mold maintenance. 1. Die steel Steel is the decisive factor of mold quality, and selecting reasonable steel is the most important. The criteria for selecting steel are: ① Requirements for injection molding materials - different plastics should use different steels, such as requirements for high polishing and corrosion resistance; ② Price - steel properties are good as long as they can be used, not the more expensive the better; Considering the cost…

◆ common sense of sand blasting and rust removal Sand blasting and rust removal is to use compressed air as power to form a high-speed jet beam to spray materials (copper ore sand, quartz sand, carborundum, iron sand and Hainan sand) onto the surface of the workpiece to be treated at high speed, so that the appearance or shape of the outer surface of the workpiece surface changes. Due to the impact and cutting effect of the abrasive on the workpiece surface, the surface of the workpiece can obtain a certain degree of cleanliness and different roughness, The mechanical properties…

Metal: a material with good thermal conductivity and conductivity, which is opaque and metallic luster, and whose conductivity decreases with the increase of temperature, and is rich in ductility and expansibility. A solid (i.e., a crystal) in which atoms in a metal are arranged regularly. Alloy: a substance with metallic properties composed of two or more metals or the fusion of metals and nonmetals. Phase: refers to the independent and uniform components in the metal or alloy with the same chemical composition, the same lattice structure, or the same atomic aggregation state, and a clear interface with other parts. Organization:…

1、 Comparison of temperature resistance between PPR water pipe and PE water pipe Under normal use, the maximum stable temperature of PE water pipeline is 70 ℃, and the minimum temperature is - 30 ℃. In other words, in such a temperature range, long-term use of PE water pipes is safe and reliable. Under normal use, the maximum stable temperature of PPR water pipeline is 70 ℃, and the minimum temperature is - 10 ℃. It also shows that the long-term use of PPR water pipeline is safe and reliable within such temperature range. It is concluded that PE water…

In recent years, with the support of national policies, housing industrialization has developed rapidly. A batch of industrial houses have sprung up, and housing industrialization has entered the fast lane of development. In particular, the development of information technology has promoted the development of housing industrialization towards automation, integration and intelligence. The appearance of 3D printed concrete buildings fully shows the bright prospect of future residential industrial development. The realization of Intelligent Manufacturing in the construction industry is not a castle in the air. Not long ago, a construction company in Shanghai built two buildings with 3D printers. One is…

For coating construction, the film thickness is the most important control factor in the coating process, and its significance lies in:  (1) Prevent coating defects caused by improper film thickness. According to experience, more than half of the appearance defects of the coating in the field production are caused by improper control of the coating film thickness. Some common coating defects such as sagging, thin paint layer and exposed bottom color are directly related to the out of control of film thickness, and some defects are also indirectly related to this. For example, if the film thickness of the first…