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Research Progress of Die-Casting Aluminum Alloy (Part 2)

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2.1 Computer simulation technology Computer simulation technology is currently mainly based on the numerical simulation of the flow field of die casting, the temperature field of the die casting mold/die casting, and the numerical simulation of the stress field of the die casting die/die casting. Vigorously develop computer simulation technology, perform filling and solidification analysis, and form an expert system on this basis to achieve the ideal cavity filling state and mold thermal equilibrium state, which can predict casting defects such as porosity and shrinkage of die castings and residual stress and deformation The situation and the life of the mold ensure the reliability of the design quality to obtain high-quality castings and high productivity. The die casting process is a complex flow, heat and mass transfer process. At present,most of the numerical simulation of the die-casting filling process starts from the material cake or the runner. The slow injection process of ...
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Research Progress of Die-Casting Aluminum Alloy (Part 1)

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At present,  die-casting aluminum parts  used in the industry mainly include the following series: A1-Si, Al-Mg, Al -Si-Cu. Al-Si-Mg, etc.  Die-cast aluminum alloy has high specific strength, corrosion resistance, and good casting performance, processing performance, and reproducibility, as well as excellent electrical and thermal conductivity, and is widely used in the automotive, aerospace and electrical industry industries.  With the development of the automobile and other industries, the output of aluminum alloy die castings increases at a rate of nearly 13% per year, and its output accounts for more than 75% of the output of all die castings. And aluminum alloy die-casting parts are developing towards high strength and high quality, which will definitely promote the further development of aluminum alloy die-casting technology. 1 Development and application of die-casting aluminum alloy Traditional Le casting aluminum alloy parts are not suitable for heat tr...
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Why Are Manhole Covers Round?

The manhole cover is our common existence, and it can be seen everywhere when walking outside.  Due to different functions of the manhole cover, "electricity", "dirty" and "rain" are written on it and various symbols are drawn on it. But no matter how many use the manhole cover has, the shape of the manhole cover is basically a circle.  Have you ever wondered why the manhole cover has to be round? The problem of the manhole cover being round can be traced back to France in the 13th century... When France was building ancient Paris, it used around discus as the manhole cover for the sewer. Later, the Roman Empire used French sewer technology to build a Roman city. Later, major cities around the world successively adopted Roman sewer technology. As a result, the round manhole cover seemed to become a conventional thing.  In fact, the circular manhole cover has many advantages~! 1 Not easy to fall Round, each radius from the center to the edge has ...
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What Should Notice When Processing Nodular Cast Iron Manhole Cover? (Part 2)

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During the casting process, there are often problems with porosity, which brings a lot of trouble to the processing of the manhole cover. Porosity is the shortcoming of bubbles formed by the separated gas remaining in the ingot during the cooling and condensation of the metal liquid. The   Ductile iron manhole covers supplier  will analyze the primary cause of the blowhole. 1. The poor air permeability of paint or lack of negative pressure, the poor air permeability of sand filling, can not exhaust the gas and residues in the cavity in time, and form pores under the filling pressure. 2. The pouring speed is too slow to fill the gate cup, expose the sprue, get in the air, and suck in the slag, forming the air hole and slag hole. 3. A large amount of gas and residues generated by the gasification and decomposition of the foam model cannot be discharged out of the mold in time. The dryness of the foam and paint layer filled with dry sand is poor. Surrounded by th...
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Which Company Has a Better Ductile Iron Storm Drain?

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Now, when using the ductile iron rain grate, people will put most of their energy on his device. Since only the correct device will be used, it will play a big role in the future. Understand the detailed installation requirements of ductile iron rain grate! First: In order to ensure the fundamental strength requirements, before installing the rain grate, the cement base must be placed before installing the rain grate. Second: After the rain grate is installed, the fastening screws should be installed around it, and the bottom of the frame should also be filled with cement mortar to avoid the rain grate from falling due to various reasons. Third: According to the actual situation, any shape of the eccentric rain grate can be installed to meet the actual requirements. Many people do not know how to install the rain grate, so on some roads inside the building, you can see that the drainage channel is around the road, without any protection measures, and it exists as an open chann...
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Problems in the Construction of Nodular Cast Iron Manhole Cover

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A ductile iron manhole cover is a kind of ductile iron products, ductile iron through spheroidization and inoculation treatment to get spherical graphite, effectively improve the mechanical properties of cast iron, especially improve the plasticity and toughness, so as to get higher strength than carbon steel. Nodular cast iron has been rapidly developed into the second most widely used cast iron material after gray cast iron. The so-called "iron instead of steel" mainly refers to ductile iron. Ductile iron manhole cover in the construction process, if there is no correct method, then it is easy to have some problems, these problems if not properly handled, it is likely to be in the future use of the process of decline, so today  Ductile Iron Manhole Covers Supplier  will give you a simple introduction: First general municipal road building to a certain height, then filling roadbed, this situation leads to large mechanical compaction can't around the wellbore, and ha...
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What Should Notice When Processing Nodular Cast Iron Manhole Cover? (Part 1)

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The main products of Botou Junteng Casting Co., Ltd. are ductile iron manhole cover, ductile iron grate, ductile iron bench, die-cast aluminum parts, aluminum manhole cover, aluminum pump casing, cast aluminum elbow, aluminum lamp housing, aluminum alloy Three links and so on. Because   ductile iron manhole covers  are very heat-treated, they can basically be divided into two categories. One is that the arrangement structure will not change or should not be changed through heat treatment, and the second is the basic arrangement structure. Onset changes. A heat treatment procedure is mainly used to eliminate internal stress, which is caused by the different cooling conditions and conditions in the stainless steel casting process. The arrangement, strength, and other mechanical properties do not change significantly due to heat treatment. Regarding the second type of heat treatment, the base arrangement has undergone obvious changes and can be roughly divided into five catego...
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