- Time of issue:2020-12-28 18:43:02
The company has always attached importance to technical innovation, established a technology research and development center, and passed the national high-tech enterprise certification in 2018. The company and Hunan Institute of Engineering speed up the development of new products through coalition, and realize the industrialization of scientific research achievements in colleges and universities. At present, the company has obtained 2 invention patents, 9 utility model patents, and 2 utility model patents are under application. In 2017, "Zhongxin" brand was designated as a famous trademark of Hunan Province, and it was certified as a qualified product after national inspection. It is one of the top ten artistic manhole covers in China. In 2018, "Zhongxin" nodular trench manhole cover and nodular accessories system products won the "Chinese famous products". The company is one of AAA credit enterprises, and obtained ISO9OO1 certification, environmental system certification, and occupational health system certification.
The company's "specialization, special innovation" results
The company has more than 10 years of production experience in the manhole cover production industry. It has introduced three automated production lines, including one 148-machine molding line (6 molding machines), and two manual molding lines (48 molding workers). All production lines use a central control room. A reasonable control method combining control with on-site control of main equipment and emergency stop control under special circumstances can realize the functions of restrictive protection and automatic fault alarm. The entire electrical control system is at the advanced level of the domestic foundry industry. The production site selects the current domestic advanced process and equipment, adds 2 3T/t electric melting furnaces and automatic control equipment for the production line
The company insists on refined production, refined management and refined services, and gradually gains an advantage in the ductile casting manhole cover market with its cost-effective and high-quality products and services. The company has established a complete quality assurance system. The company has functional departments such as the technical research and development department, production headquarters, quality management department, after-sales service department, storage and transportation department and other functional departments. Hierarchical management.
——Special anti-rust paint and high-strength materials to protect the manhole cover from rust
The main material used in the manhole cover of our company is ductile iron, which is a structural material with high strength, high toughness and high wear resistance. Nodular graphite is obtained through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron. In particular, the plasticity and toughness are improved, resulting in higher strength than carbon steel. The key core process of producing as-cast ductile iron is spheroidizing. The key factor to ensure the stability of spheroidizing quality is to use high-quality raw materials to make manhole covers. As-cast nodular cast iron is a material with strong corrosion resistance, coupled with the use of high-density anti-rust and waterproof paint on the surface of the manhole cover, the manhole cover is more resistant to rust. It is an ideal material to make manhole covers with as-cast ductile iron. At present, more than 98% of developed countries such as Europe, America and Japan use as-cast ductile iron to make manhole covers.
——Double anti-theft patented technology protection makes the manhole cover safer
Our company's ductile cast manhole cover adopts the invention and application of hinges and locks, which makes the manhole cover safer in the process of road use. The hinge connects the cover plate and the base into a whole, unless the base is dug out of the cement artificially, the manhole cover can be safely stolen. Special locks, combined with special unlocking tools, prevent the manhole cover from being opened at will, ensuring the safety of the wires and cables under the manhole cover. The anti-theft performance is good, the special opening tool equipped is convenient and practical, which prevents the occurrence of manhole cover theft, provides great convenience for maintenance and management, saves money and manpower, and avoids traffic safety accidents caused by manhole cover theft. Personal injury and death accidents create good economic and social benefits. The new spheroidal graphite cast iron anti-theft manhole cover is synthesized from several materials and contains many impurities. The value of recycling and processing is not high. This is a fundamental way to effectively prevent thieves.
The anti-theft device is designed reasonably and is easy to open. It solves the problem of long-term theft of manhole covers. It can be widely used in urban construction, municipal administration, electricity, telecommunications, tap water, street lights, cable TV, gas and other projects.
——Triple anti-noise patented technology protection, the use of manhole covers is noise-free, safer and environmentally friendly
The new spheroidal graphite cast iron anti-theft manhole cover has a polychlorinated ether pad on the joint surface of the frame and cover, which increases the mating depth of the frame and the cover. Six-point contact is adopted to make the cover frame fit tightly and use the hinge together. A flexible pad is installed between the manhole cover and the seat to effectively buffer the collision between the manhole cover and the seat; high-precision machining makes the manhole cover and the seat tightly and smoothly combined; the cover plate is equipped with an elastic device to prevent the manhole cover from shifting in the vertical and horizontal directions. By optimizing the structural composition of the manhole cover, the manhole cover is designed as the main cover and the inner cover plus the base, which improves the anti-skid and shockproof performance of the manhole cover, and prevents the electric equipment in the manhole cover from being corroded by water flow and the influence of external shocks. Fastening bolts and anti-theft locks basically eliminate noise, reduce vibration, and basically eliminate the common noise problem of old gray cast iron manhole covers when they are impacted by cars and the phenomenon of being carried away by the impact of cars.
Secondly, our company's production process implements environmentally friendly production, with complete dust removal equipment, and emission pollution permits and safe production permits. The production site selects the current domestic advanced process and equipment, adds 4 3T/t electric melting furnaces and automatic control equipment for the production line, and is equipped with complete environmental protection facilities such as dust removal and paint mist absorption. The unit comprehensive energy of the final product Both the energy consumption index and the energy consumption index of the main processes have reached the leading domestic level.
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Address: No.320 National Road Side, Group 5, Wangtang, Eastern Suburb, Xiangxiang City, Hunan Province