1995年我公司同上海材料研究所合作開發(fā)了09CrCuSb（企業(yè)代號ND）無縫鋼管，1997年入選GB150-1998標(biāo)準(zhǔn)，廣泛用于高含硫煙氣中服役的省煤器、空氣預(yù)熱器、熱交換器和蒸發(fā)器等設(shè)備。由于近些年來進(jìn)口高硫原油逐步上升，現(xiàn)有ND材料已經(jīng)不滿足大多數(shù)煉廠、電廠等企業(yè)的實(shí)際工況需求。2015年底在中石化洛陽工程有限公司等單位技術(shù)支持下，我公司優(yōu)化了材料合金配比、添加其它微量元素，成品管材通過合肥通用所第三方檢測，均勻腐蝕速率小于4mg/cm2.h。

 

In 1995 our company has cooperatively developed 09CrCuSb (enterprise code ND) seamless steel tubes with Shanghai Material Research Institute, which was selected in standard GB150-1998 in 1997, and have widely used in the service of high sulfur in flue gas economizer, air preheater, evaporator and heat exchanger and etc. Due to the gradual increase in imports of high sulfur crude oil, the ND materials could not meet the actual needs of the most refineries, power plants and other enterprises. By the end of 2015, in the technical support of the relevant research institutes, our company optimized the material composition, and added other trace elements, the finished pipes were detected by the third party of Hefei General Machinery Research Institute, which concluded that the uniform corrosion rate was less than 4mg/cm2.h.

 

09CrCuSb(S)優(yōu)點(diǎn)

優(yōu)化了合金配比，添加了稀有合金，成品管材具有優(yōu)良的耐硫酸均勻腐蝕能力，根據(jù)合肥通用所第三方檢驗(yàn)拫告耐腐蝕性能比原有ND鋼提升2倍多；

控制了As、Sn、Pb等五害元素含量，控制氫、氧、氮的氣體含量，使坯料純凈度更高，根據(jù)多次分析材料晶粒度不粗于8級；

此類材料制作的設(shè)備耐腐蝕能力提高，相對延長了煉廠、電廠的檢修周期，具有較大的經(jīng)濟(jì)效益。

 

Depend on the optimization of the alloy ratio and the addition of rare alloy, thefinished pipes had uniform excellent corrosion resistance to sulfuric acid. According to the third-party inspection reportof Hefei General Machinery Research institute, corrosion resistance of the ND steel has increased two times than the original steel;

Controlling the content of five harmful elementslike As, Sn andPband the gas content of hydrogen, oxygen, nitrogen made the purity of the billet became much higher. According to many analyses, the grain size of the material was not more than level 8;

This kind of material has great economic benefit which improvesthe

corrosion resistance of the equipment, extends the maintenance cycle of refinery and power plantrelatively.