low chromium meaning in English

低铬

Low chromium alloyed cast iron cylpebs
低铬合金铸铁磨段
Low chromium alloy series gangqiu , various mills chenban , wear - resisting acidproof metal , copper liu , bronze pieces , copper products production and marketing
低铬合金系列钢球、各类磨机衬板、耐磨耐酸铸件、铜料、铸铜件、铜产品制作及销售。
The reinforcing effect has been researched , with wc of 40 ~ 60 mesh dimension and 10 ~ 52 wt % volume fraction . the matrices were grey cast iron and low chromium cast iron
复合材料中碳化钨颗粒粒度为40 60目，体积分数范围为10 52 ，基体材质分别选用了灰口铸铁和低铬铸铁，研究了它们的复合效果。
The results show that , composite could be fabricated on the complicated surface by means of sodium silicate sand mold combination with vacuum infiltration process . when the substrate was 10 mm , composite layers reached 3 mm to 5 mm in thickness with high strength interface and less casting defect . microstructures of grey cast iron and low chromium cast iron matrix composites with various volume fraction has been analyzed
结果表明：用水玻璃砂型(芯)加负压铸渗的工艺能够实现复杂表面(曲面)颗粒增强复合材料的制备，浇注方式简单可靠，基材厚度在10mm时，复合层厚度能达到3 5mm ，且复合层铸造缺陷少，复合效果好，界面致密而且结合强度高。