The well cover is an inseparable "protective film" in our daily life. The quality of the well cover is also related to the safety of people's daily travel. The transformation from the past cast iron well cover to the present ductile iron well cover is not only a change in quality, but also a safer transformation process. Therefore, the good quality of the ductile iron well cover is also a key factor to protect our lives.
Nowadays, the use of ductile iron manhole cover in people's daily life has been very common, often seen in the street, the quality of ductile iron manhole cover will interfere with the safety of the car passers-by, so its quality must be ensured. In fact, there are many factors that interfere with the quality of castings. The quality of nodular cast iron well cover includes appearance quality, internal quality and service quality. Any one reason is likely to interfere with the overall quality, so every level can not be ignored.
When the manufacturer of nodular cast iron manhole cover formulates the product, in addition to defining the geometric pattern and specification of the manhole cover according to the operation requirements and metal composite material function, it also needs to consider the rationalization of the formulation from the aspects of forging aluminum alloy and forging process performance.
Secondly, the manufacturer should pay special attention to the forging process when manufacturing products. That is to say, according to the structure, net weight and specification of castings, the properties and manufacturing requirements of forged alloys, the appropriate parting surface, modeling design and core making method are selected, and the forging rib, sprue, riser and pouring system are effectively set to ensure the high quality castings.
In order to better ensure the quality of nodular cast iron well cover, we have to choose high-quality raw materials when manufacturing the product. If the quality of metal charge, refractory, energy, solution, quality change agent, sand for casting, mold sand adhesive, architectural coating and other materials used are not up to standard, the defects of air hole, pinhole, slag inclusion, sand sticking and so on will be formed in the casting, which will endanger the external and internal quality of the casting iron, and the casting will be damaged when it is more serious.
The above is the quality and safety content of Shandong ductile iron well cover. I hope it can help you. For more wonderful information, please click our website: http://www.zgcjxdw.com