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机制柔性抗震铸铁管高品质住宅的最佳排水管材

作者: -1    发布时间: 2018-07-12    次浏览

为什么机制柔性抗震铸铁管高品质住宅的最佳排水管材?
Why is the mechanism flexible aseismic cast iron pipe high quality housing the best drainage pipe material?

铸铁管之所以成为目前全球公认的建筑雨水、污水、废水及通风系统的最佳管材,这源自于其有如下优良特性。
Cast iron pipe has been recognized globally as the best pipe material for building rainwater, sewage, waste water and ventilation systems because it has the following characteristics.

1、机制柔性抗震铸铁管高品质住宅的最佳排水管材之优良的静音、低噪声排水管材
1. Excellent static and low noise drainage pipes of the best drainage pipes for high quality residential buildings with flexible and aseismic mechanism

铸铁排水管独特的片状石墨灰口组织结构,使其具有良好的吸收震动和低噪声的性能。根据一项美国专家对PVC、ABS和铸铁管进行的为期一年的对比研究测试证明,只有柔性接口铸铁排水管材,才满足当今住宅、公寓及商业建筑对噪声低水平的要求。铸铁排水管的噪声比PVC管材低6~10分贝(平均8分贝),比ABS管材低15分贝。铸铁排水管材的弹性橡胶密封接口,可有效地阻隔噪声的传播,其效率是PVC管材的7.5倍。这就是铸铁排水管材排水时无噪声的原因所在。
The unique flake graphite ash structure of cast iron drain pipe makes it have good performance of absorbing vibration and low noise. According to an American expert on PVC, ABS and cast iron pipe test and comparative study of the period of one year, only the flexible interface cast iron drainage pipe, to satisfy today's residential, apartments and commercial buildings to the requirements of low noise level. The noise of cast iron drain pipe is 6~10 decibels lower than PVC pipe (average 8 decibels), 15 decibels lower than ABS pipe. The elastic rubber seal interface of cast iron drain pipe can effectively block the transmission of noise, and its efficiency is 7.5 times of that of PVC pipe. This is the reason why there is no noise in the discharge of cast iron pipes.

2、机制柔性抗震铸铁管高品质住宅的最佳排水管材之具有优良的耐腐蚀,耐用性超过建筑物预期寿命
2. The best drainage pipe materials for high quality buildings with flexible and aseismic iron pipes have excellent corrosion resistance and durability exceeding the expected life of the buildings

人们往往将铸铁排水管的耐腐蚀性能等同于普通钢材,这是一个误区。在灰口铸铁是一种铁、碳、硅合金,尽管碳和硅的重量百分比分别仅占3.5~4%和3%左右,但两者体积之和占铸铁总体积超过了27%。其中碳是以片状游离态石墨形式,硅以二氧化硅晶体形式存在于铸铁组织中的。一般人会认为石墨是一种质地较松软的炭黑,而存在于灰口铸铁组织中的鳞片状石墨,却因铸铁在凝固收缩过程中形成巨大的挤压力,变得非常致密和坚硬,加之灰铸铁组织中耐腐蚀二氧化硅的存在,当铸件表面部分铁元素被腐蚀后,会形成一层致密的、高强度的不溶性鳞片状石墨和二氧化硅保护层,成为防止灰铁组织中铁元素进一步被腐蚀的保护屏障。
It is a mistake to equate the corrosion resistance of cast iron drain pipes with that of ordinary steel. Gray cast iron is an iron, carbon and silicon alloy. Although the weight percentage of carbon and silicon only accounts for about 3.5 to 4 percent and 3 percent respectively, the total volume of the two accounts for more than 27 percent of the total cast iron volume. Carbon is in the form of flake graphite and silicon is in the form of silica crystal in the structure of cast iron. The average person would think that graphite is a soft texture of the carbon black, but in the scaly graphite of gray iron group, for cast iron in the process of solidification shrinkage, a huge extrusion pressure becomes very dense and hard, together with corrosion resistant silica in the tissues of the gray cast iron, when parts of iron casting surface corrosion, can form a layer of dense, high strength of insoluble flaky graphite and silicon dioxide layer, become prevent grey iron iron further corrosion protective barrier.

3、机制柔性抗震铸铁管高品质住宅的最佳排水管材之不可燃性,是耐火建筑的防火屏障
3. The non-flammability of the best drainage pipe materials of the high quality residential buildings with flexible and aseismic iron pipes is the fire protection barrier of the refractory buildings

铸铁管的不可燃、耐高温性能,使其成为打造安全耐火建筑不可替代的排水管材。当火灾发生时,它具有两个明显的减轻灾害损失的优势:
The non-combustible and high temperature resistance of cast iron pipe makes it an irreplaceable drainage pipe for building a safe refractory building. When a fire occurs, it has two obvious advantages to mitigate disaster losses:

(1)防止火灾的蔓延,为住户逃生和消防灭火赢得了宝贵的时间
 (1) prevent the spread of fire, and gain valuable time for residents to escape and fire fighting

(2)防止火灾产生的毒烟对人体的危害
 (2) prevent the harmful effects of toxic smoke from fire on human body

4、机制柔性抗震铸铁管高品质住宅的最佳排水管材之抗变形及抗震性能,确保财产安全
4. The anti-deformation and anti-seismic performance of the best drainage pipe materials for high quality residential buildings with flexible and anti-seismic mechanism ensures the property safety

由于建筑用地的日趋紧张,我国大部分住宅为高层建筑,一部分区域属于地震高发区。建筑排水管道的抗变形能力和抗震性能,是确保排水系统安全运行的一个重要指标。铸铁排水管材现行国家产品标准是参照发达国家柔性抗震管材标准制定的。采用的柔性接口连接型式,使其具有优良的抗震性能。90年代初,我国为制订铸铁排水管材标准进行的管材接口抗震性能试验证明,柔性接口铸铁排水管用于地震烈度9度区域是安全的。在我国一些地震发生区域的情况也证明,采用柔性接口铸铁排水管的楼房,经受住了地震的考验,排水系统运行完好。新修订的GB/T12772《排水用柔性接口铸铁管、管件及附件》标准,将“管道密封及抗震性能试验”标准作为规范性附录正式写入标准。2015年8月1日正式实施的GB50981-2014《建筑机电工程抗震设计规范》标准也明确规定,“高层建筑及(地震烈度)9度地区建筑宜采用柔性接口的机制排水铸铁管”。
Due to the increasing shortage of construction land, most of the residential buildings in China are high-rise buildings, and some areas belong to areas with high earthquake incidence. The anti-deformation and anti-seismic performance of building drainage pipeline is an important index to ensure the safe operation of drainage system. The current national product standards for cast iron drainage pipes are formulated with reference to the flexible aseismic pipes standards of developed countries. The flexible joint type is adopted to make it have good seismic performance. In the early 1990s, the seismic performance test of the pipe joints in China to formulate the standards for cast iron drainage pipes proved that the flexible cast iron drainage pipes were safe to be used in the area with seismic intensity of 9 degrees. It is also proved that buildings with flexible iron drain pipes have withstood the test of earthquake and the drainage system is in good condition. The newly revised GB/T12772 standard for flexible joint cast iron pipes, fittings and accessories for drainage has officially been included in the standard as a normative appendix. On August 1, 2015 formally implemented GB50981-2014 "code for seismic design of building mechanical and electrical engineering standard also make clear a regulation, high-rise buildings and seismic intensity () in 9 degrees should adopt the mechanism of flexible interface cast iron drainage pipe".

近几年来,我国逐步开始重视建筑排水系统安全问题,在新制订的《建筑机电工程抗震设计规范》标准中规定,高层建筑及地震烈度9度区域宜采用柔性接口机制铸铁排水管材。在一些新制订和修订的产品及工程标准中,逐步完善了铸铁排水管材制造及应用的技术条款,这将进一步推动住宅建筑排水系统整体质量的提高。
In recent years, our country gradually began to attach importance to building drainage system security problem, the new formulation of the seismic design of building mechanical and electrical engineering in the standard regulation, high-rise buildings and seismic intensity region 9 degrees of appropriate USES flexible interface cast iron drainage pipe. In some of the new formulation and revision of the product and engineering standards, gradually improve the cast iron drainage pipe manufacture and application of technical terms, which will further promote residential building drainage system of overall quality.