Botou Junteng Casting Co.,Ltd

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...

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...

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...

3. Normalizing to improve the strength of nodular cast iron The purpose of ductile iron normalization is to transform the matrix structure into a fine pearlite structure. The process is to reheat the nodular cast iron parts with ferrite and pearlite to 850-900 ℃, the original ferrite and pearlite are converted to austenite, and some spherical graphite is dissolved in austenite. After cooling, the air-cooled austenite is transformed into fine pearlite, so the strength of the  OEM ductile iron surface box  is improved. 4. Quenching and tempering of ductile cast iron Ductile cast parts require higher hardness as bearings, and often cast iron parts are quenched and tempered at low temperatures. The process is: the casting is heated to a temperature of 860-900 ° C, and the original matrix is austenitized by heat preservation, and then cooled in oil or molten salt to achieve quenching. After heating and tempering at 250-350 ° C, the original matrix is converted to Fire marten...