The present invention provides an anticorrosion material and a preparation method. In the invention, the duplex stainless steel is calenacted by cold drawing and then annealed to get the anticorrosion material. The invention uses duplex stainless steel as the raw material, and has good corrosion resistance. The hardness of the duplex stainless steel is greatly improved by cold drawing and annealing. The experimental results show that the anti-corrosion materials prepared by the method of preparation provided by the invention, in the condition of coal mine environment, corrosion rate is less than 0.1mm; in the middle atmosphere corrosion rate is extremely low, has good resistance to stress corrosion in chloride environment, the hardness is HRC35 ~ 50, for hydraulic support column Jack and anticorrosion, compared with chromium coating service life can be increased by 4~8 times. In addition, the preparation method of the anticorrosion material provided by the invention is simple, the production efficiency is high, and it is suitable for industrial popularization.
【技术实现步骤摘要】
一种防腐材料及其制备方法
本专利技术涉及防腐材料
,特别涉及一种防腐材料及其制备方法。
技术介绍
由于井下工作环境恶劣,地下水质、空气中介质的酸碱腐蚀情况不同,从拆件情况看,立柱和千斤顶使用一段时间后,都会在缸筒内部,中缸、活柱外圆等部位发生不同程度的锈蚀、损坏。一旦锈蚀,将会损坏密封,从而使立柱和千斤顶失效。为了延长立柱、千斤顶的使用寿命,国内外对防腐技术进行了大量的研究。喷涂、喷焊技术是用热源将防腐金属粉末或线状材料加热到熔化或熔融状态后,雾化并喷射到事先处理过的工件表面上,形成一层覆盖层或使之与母材形成冶金结合,达到防腐的效果。但是喷涂技术工艺复杂,且现有技术中的喷涂技术存在孔隙率高和粘结强度差的特点,并不能够满足硬度与防腐性能的要求。电镀技术是液压支架立柱、千斤顶常见的防腐技术,采用耐腐蚀的金属作为镀层,能够增强金属的抗腐蚀性,增加硬度、防止磨耗、润滑和耐热性好,表面美观。但是电镀防腐对于零件本体金属与镀层之间的结合要求很高,一旦镀层脱落将会对支架液压系统造成致命的影响。并且,现有技术中多采用镀铬层,镀铬层厚度只有0.05~0.07毫米,又因电镀工艺 ...
【技术保护点】
一种防腐材料的制备方法,包括:将双相不锈钢进行冷拔压延,然后退火得到防腐材料。
【技术特征摘要】
1.一种防腐材料的制备方法,包括:将双相不锈钢进行冷拔压延,然后退火得到防腐材料。2.根据权利要求1所述的制备方法,其特征在于,所述双相不锈钢中铁素体的体积含量为40~60%。3.根据权利要求2所述的制备方法,其特征在于,所述双相不锈钢包括2205不锈钢、2507不锈钢或31803不锈钢。4.根据权利要求1所述的制备方法,其特征在于,所述冷拔压延的轴向变形量为15~35%。5.根据权利要求1所述的制备方法,其特征在于,所述退火的温度为300~380℃,退火的时间为50~120min。6.根据权利要求1~5任意一项所述的制备方法,其特征在于,所述冷拔压延...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。