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铸铁井盖与球墨铸铁井盖如何辨别?

来源:http://www.jnwszy.com添加时间:2022-05-07 13:45:24

现在随着井盖的盛行,然而在市面,它的种类也越来愈多,铸铁井盖、球墨铸铁井盖、复合井盖、混凝土井盖。其中铸铁井盖与球墨铸铁井盖外表很相似,单单从表面上看是无法辨别出来的,其实不同的材质之间所表达出来的效果是不一样的,那么这就需要我们在选购上能够明确几点重要的辨别事项。

Now, with the prevalence of well covers, however, there are more and more kinds in the market, including cast iron well covers, nodular cast iron well covers, composite well covers and concrete well covers. Among them, the appearance of cast iron manhole cover is very similar to that of nodular cast iron manhole cover, which can not be distinguished only from the surface. In fact, the effects expressed by different materials are different, so we need to be able to clarify several important distinguishing matters in purchase.

(1)敲击井盖:球墨铸铁井盖发出的生音似敲击碳钢的声音。灰铁井盖的敲击声音听起来很闷。

(1) Knocking on the manhole cover: the sound produced by the nodular cast iron manhole cover is like the sound of knocking on carbon steel. The knocking sound of gray iron manhole cover sounds very dull.

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(2)从断口处察看:前者的断口晶粒很细小,为黑灰色。而灰铁井盖的断口处晶粒比较粗大,为灰白色。

(2) From the fracture: the fracture grain of the former is very fine and black gray. The grain at the fracture of gray iron well cover is relatively coarse and gray white.

(3)从治炼办法来说:球墨铸铁井盖是在治炼时在灰铁中加孕育剂与球化剂使石墨有分散的团絮状变成球状,以减小对铁素体的割裂,加大强度,提高性能来达到的。

(3) In terms of refining methods: nodular cast iron well cover is achieved by adding inoculant and spheroidizing agent to gray iron during refining, so that the dispersed flocculent graphite becomes spherical, so as to reduce the separation of ferrite, increase strength and improve performance.

(4)灰铁井盖在治炼时不加任何辅助材料,直接将生铁治炼成铁水,然后浇铸成井盖。前者在治炼时要加入球化剂、稀土镁等金属合金而成。

(4) The gray iron well cover does not add any auxiliary materials during smelting, directly smelting pig iron into molten iron, and then casting into the well cover. The former is made by adding spheroidizing agent, rare earth magnesium and other metal alloys.

(5)球墨铸铁井盖强度高、韧性好、因而它比同类灰铁井盖轻30%左右。

(5) Nodular cast iron manhole covers have high strength and good toughness, so they are about 30% lighter than similar gray iron manhole covers.

(6)同样是球墨铸铁产品,球化率不同,质量也就不同,价钱上也有很大区别。

(6) Similarly, nodular cast iron products have different spheroidization rate, different quality and great difference in price.

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