不锈钢复合钢管组织及其性能

采取外层先离心浇注10号钢,再浇注内层1Cr18Ni9Ti得到离心复合空心管坯,管坯内外表面加工后进行热挤压和冷轧,试制出了47mm×4.5mm的碳钢/不锈钢复合钢管,对不锈钢离心复合管坯生产复合钢管工艺路线进行研究,并对复合管金相组织、性能及结合层质量等方面进行分析。结果表明,复合管内外层冶金结合良好,晶粒明显细化,终轧后晶粒由铸态时3.0～3.5级变为7.0～8.0级,复合管压扁、弯曲及热处理后晶界腐蚀检验合格。

Microstructure and Properties of Carbon Steel/Stainless Steel Composite Pipe

Composite hollow pipe billet was successfully manufactured by centrifugally pouring 10 type steel on the outer layer firstly and then pouring 1Cr18Ni9Ti stainless steel on the inner layer. The pipe billet with inner and outer surface treated was prepared to the carbon steel /stainless steel composite pipe with 47 mm in diameter and 4.5 mm in length by hot extrusion and cold rolling,and composite pipe manufactured with stainless steel by centrifugal casting was described. The microstructure,properties and bo...