Category: Manufacturing Technology knowledge

Magnesium, rare earth and calcium can spheroidize graphite in cast iron. As a spheroidizing agent in practical application, magnesium is in the first place in terms of their respective comprehensive evaluation. The casting small knitting machine learned that under the condition of taking magnesium as the main nodulizing element, with appropriate rare earth, better nodulizing effect can be obtained. 1. Desulfurization and deoxidation Magnesium, rare earth and calcium have strong desulfurization and deoxidization effects in molten iron. As far as the free energy of elements reacting with sulfur and oxygen to generate sulfide and oxide is concerned, the desulfurization and…

The differential case is a mature product. The cast casting material is QT600-3. It is molded with damp film sand and has a small amount of coated sand hot core. The comprehensive rejection rate remains below 2%. However, in two consecutive shifts of products, up to 70% of the waste parts caused by air holes suddenly appeared. After dissection, it is found that the air holes are mainly distributed at the edge of the casting, with a diameter of 1~3mm, spherical, and an anatomical depth of about 10mm, Solve the problem. 1. Defect analysis and solutions According to the appearance…

V method and EPC are both the third generation of physical forming casting technology introduced in China at the same time. EPC technology has been promoted and developed rapidly with a good momentum of development. The quality of castings and the level of process and tooling technology have been greatly improved, and the economic scale of enterprises has been expanding and improving. In recent years, due to the limitations of environmental protection, energy consumption and labor force, a large number of foreign castings have been produced in China. At the same time, the domestic demand for castings is also increasing.…

The key support area of the "Made in China 2025" industrial planning is "intelligent manufacturing", which emphasizes the deep integration of the new generation of information technology and manufacturing industry, and accelerates the intelligent manufacturing process of intelligent products such as robots, intelligent factories, and the integration of the Internet and manufacturing industry. Miao Wei, Minister of the Ministry of Industry and Information Technology, said that the Ministry of Industry and Information Technology is currently participating in the research on major projects of intelligent manufacturing organized by the state. It is estimated that it will take three years to select…

Application of centrifugal casting: Castings with significant production benefits include: ① Bimetallic cast iron roll; ② Heating furnace bottom heat-resistant steel roller table; ③ Special steel seamless steel pipe; ④ Brake drum, piston ring blank, copper alloy worm gear; ⑤ Special shaped castings such as impellers, metal false teeth, gold and silver mesons, small valves and cast aluminum motor rotors. Centrifugal casting was first used to produce cast pipes, and then this process developed rapidly. Centrifugal casting process is adopted in metallurgy, mining, transportation, irrigation and drainage machinery, aviation, national defense, automobile and other industries at home and abroad to…

The formation of subcutaneous blowholes is a comprehensive reaction of improper operation of each link and process in the casting process. The causes are complex, and there are many influencing factors, involving everyone. Everyone should pay high attention to each process. 1、 Raw materials 1. Raw materials with high content of titanium (Ti) and aluminum (AI), as well as high alloy steel and stainless steel are prohibited. 2. Raw materials that are seriously rusted and oxidized and have a lot of oil, coal sludge and waste sand shall be used after cleaning. 3. Wet raw materials with water shall be…

Sculpture is a form of expression of art. The history of sculpture in the Central Plains can be traced back to the Peiligang Culture more than 8000 years ago. For thousands of years, Central Plains sculpture has always been the leading and symbol of Chinese sculpture. The following section will introduce the process of casting copper sculpture. The cast bronze sculpture is not a general and simple process, but a sculpture cast by professional molds and techniques. Here is a detailed look at the casting process of the cast bronze sculpture: 1. Deepening of design scheme and clay sculpture production:…

With the establishment of the company's multi-ethnic market, the successful development of the multi-ethnic products, and the continuous expansion of the company's business with the recovery of the world economy, not only the customers have higher requirements for product quality, but also the prices of raw materials have increased significantly with the recovery of the economy, leading to the difficulty of casting, an industry with small profits. If you want to make profits in today's society, you must use scientific methods to reduce costs, To improve the yield and yield of castings, the important measures are to design reasonable risers…

In the past 30 years, the application of induction furnace in the casting steel industry has developed rapidly, of course, because it has many advantages, but on the other hand, it also has many disadvantages. When selecting it as smelting equipment, we must conduct comprehensive analysis and research, strive to develop its strengths and avoid its weaknesses, and must not join in the excitement and catch up with the trend. After the equipment is selected, we should have a comprehensive understanding of its characteristics, and strive to continuously improve the quality of casting products on the basis of energy conservation…

The manufacturing costs of different castings in each process are not completely the same, but some links have very small differences, which can be calculated according to the average level. We should pay attention to those factors that have a greater impact on the cost of castings. The main factors leading to the cost difference in the casting production process are as follows: 1. Process yield. Process yield, also known as yield, is the percentage of the actual casting weight in the pouring weight. For specific castings, the process yield is equal to the percentage of the total casting weight…