摘要
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。
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 bonding layer of the composite pipe were investigated. The results show that inner and outer layer exhibit desirable metallurgical bonding effects,and grain size is greatly refined. Grain size in the pipe after final rolling is transformed from 3.0～3.5 grade at as-cast state into 7.0～8.0 grade. Grain-boundary corrosion meets the requirements after bending,flattening and heat treatment.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2011年第10期949-951,共3页
Special Casting & Nonferrous Alloys
关键词
碳钢/不锈钢
复合钢管
离心复合浇注
热挤压
冷轧
Carbon Steel/Stainless Steel
Composite Pipe
Centrifugal Casting
Hot Extrusion
Cold Rolling
