Hubei Schzhunbao - modernization of urban infrastructure through materials innovation and functional design 

Hubei Schzhunbao - modernization of urban infrastructure through materials innovation and functional design

I. Advantages of materials: Scientific composition for excellent quality

1. High strength and lightness

Lukes of high-strength cast iron with spherical graphite of the QT500-7 brand from Khubay Rushongbao have a tensile strength of ≥420 MPa and a limitarity limit ≥300 MPa, which is comparable to low-carbon steel and 3 times higher than the strength of gray cast iron. The spherical structure of graphite reduces the density of the material, making hatches 30% lighter than analogues from gray cast iron. This reduces the cost of transportation and installation, and also reduces the load on the road surface.

2. Resistance to corrosion and atmospheric influences

The coating with anti -corrosion bitumen varnish in combination with the natural stability of cast iron to corrosion provides minimal wear: in 90 days of testing, corrosion was only 1/40 of the indicators of steel pipes and 1/10 of gray cast iron. The service life of such hatches is 2 times higher than that of gray cast iron. This is especially important for the humid climate of the Hubay province, reducing the frequency of service and providing durability in the street.

3. Plasticity and impact resistance

Relative lengthening of cast iron ≥7%, and shock viscosity is close to the average carbon steel, which is 10 times higher than the indicators of gray cast iron. This allows you to effectively resist dynamic loads (traffic, blows), reducing the risk of cracks.

II. Innovation in design and functionality

1. Technology against precipitation

The design with a sleeve connection integrates the hatch and the supporting ring, distributing pressure on the road layers and reducing the load on the mine by 80%. This solves the problem of "road navels" due to drawdown. An additional concrete ring (brand C25, hardening period ≥10 days) along the edge of the support guarantees long -term stability.

2. Noise reduction and anti -oscillation

- Silence: built -in vibration -insulating gaskets eliminate metal noise when driving, corresponding to environmental standards.

- Safety: a special anti -slip surface texture increases the friction coefficient by 30%, preventing falling in the rain or snow.

3. Protection against theft and safety

The hatch mount to the ring with high -strength bolts and an integral anti -vandal structure block unauthorized access. The exact casting provides the perfect fit, excluding displacements and vibrations for traffic safety.

III. Efficiency and versatility of application

1. Cost efficiency

Cast iron casting is 30% more efficient with less mechanical processing, reducing total expenses by 20–40%. This meets the budget requirements of municipal projects.

2. Wide area of ​​use

Hubei S tweehunbao hatches are suitable for:

- City roads: carrying capacity of 500 kN (exceeds the state standard 360 kN), withstands heavy equipment.

-underground communications: temperature range from -50 ° C to +300 ° C, tightness for water supply, gas, electric networks.

- Public zones: squares, parking - aesthetic design with black bitumen coating.

IV. Environmental friendliness and long -term operation

1. Environmental production: the use of low -hearted coke and rare earth alloys reduces pollution, complying with national standards.

2. Simple maintenance: modular design simplifies dismantling and cleaning, reducing labor costs. The service life of more than 50 years provides high profitability.

Conclusion

Lukes from high -strength cast iron “Khubei Schzhunbao” have become a key solution for the modernization of infrastructure due to the combination of innovative materials, design and adaptability. Their strength, resistance to corrosion and anti -badge properties not only eliminate the shortcomings of traditional hatches, but also contribute to the sustainable development of cities through economy and safety, forming smart and environmentally friendly infrastructure.