蒸呢机在使用状态下以铁素体组织为主的叫合金蒸呢机。含铬量在11%~30%,具有体心立方晶体结构。这类钢一般不含镍,有时还含有少量的Mo、Ti、Nb等到元素,这类钢具导热系数大,膨胀系数小、抗氧化性好、抗应力腐蚀优良等特点,多用于制造耐大气、水蒸气、水及氧化性酸腐蚀的零部件。这类合金蒸呢机存在塑性差、焊后塑性和耐蚀性明显降低等缺点,因而限制了它的应用。炉外精炼技术(AOD或VOD)的应用可使碳、氮等间隙元素大大降低,因此使这类钢获得广泛应用。
The square tube is called alloy square tube, which is mainly composed of ferrite in service state. The chromium content ranges from 11% to 30%. It has a body-centered cubic crystal structure. This kind of steel generally does not contain nickel, and sometimes contains a small amount of Mo, Ti, Nb and other elements. This kind of steel tool has the characteristics of high thermal conductivity, small expansion coefficient, good oxidation resistance and excellent stress corrosion resistance. It is mostly used to manufacture parts resistant to atmospheric, steam, water and oxidative acid corrosion. This kind of alloy square pipe has some shortcomings, such as poor plasticity, obvious decrease of post-weld plasticity and corrosion resistance, which limits its application. The application of out-of-furnace refining technology (AOD or VOD) can greatly reduce the gap elements such as carbon and nitrogen, thus making this kind of steel widely used.
蒸呢机厂家该如何积极应对竞争日趋激烈的市…蒸呢机经济新常态下,国家经济已由高速增长向平稳增长过渡,市场消费成为了经济发展的主要驱动力。其中,80、90后逐渐成为当前消费的主力人群,其重品牌、重品质、追求时尚、注重个性化的消费特点,形成了新的消费模式。面对这样市场需求变化,蒸呢机厂家又该如何破局?1、洞悉市场需求变化。业内人士表示,面对年轻化的消费群体,洞… 高供应、低需求依然继续影响未来蒸呢机市场…蒸呢机目前蒸呢机市场需求基本面难以明显改善,因此高产、高供应、低需求依然继续影响未来蒸呢机市场价格走势。不断传出河北、北京等地区将要减产、限产的消息,但要知道除了蒸呢机厂减产外,工地也将停工,供给和需求两端的同步限制,对蒸呢机市场的利好作用将被抵消。而且说实话,蒸呢机减产神马的,从来都是一个传说,供应压力能…
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