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钎焊-热轧法制备高速公路不锈钢复合护栏
引用本文:祖国胤,何佳礼,于九明,温景林. 钎焊-热轧法制备高速公路不锈钢复合护栏[J]. 东北大学学报(自然科学版), 2007, 28(10): 1385-1388. DOI: -
作者姓名:祖国胤  何佳礼  于九明  温景林
作者单位:东北大学,材料与冶金学院,辽宁,沈阳,110004
基金项目:辽宁省博士科研项目,国家自然科学基金
摘    要:针对当前高速公路热镀锌护栏存在的主要问题,提出采用不锈钢/碳钢复合板作为新型高速公路护栏材料.研究了钎焊-热轧法制备不锈钢复合护栏的工艺,技术路线为通过炉中钎焊实现不锈钢/碳钢的初结合,对钎焊复合板进行热轧进一步提高结合强度.研究结果表明:采用自制的Ag质量分数为15%的钎料可以实现不锈钢/碳钢有效的钎焊结合,钎焊温度720~730℃,钎焊时间3~4 min是较理想的工艺条件.对钎焊复合板热轧可以显著提高不锈钢/钎料界面的结合强度,压下率低于30%时,轧后钎料层未出现断裂、分层.热轧后,不锈钢复合护栏剪切强度可达338.4 MPa.

关 键 词:高速公路  不锈钢复合护栏  钎焊  钎料  热轧  
文章编号:1005-3026(2007)10-1385-04
修稿时间:2006-10-08

Preparation of Stainless Steel Clad Guardrails for Superhighway by Brazing/Hot-Rolling Process
ZU Guo-yin,HE Jia-li,YU Jiu-ming,WEN Jing-lin. Preparation of Stainless Steel Clad Guardrails for Superhighway by Brazing/Hot-Rolling Process[J]. Journal of Northeastern University(Natural Science), 2007, 28(10): 1385-1388. DOI: -
Authors:ZU Guo-yin  HE Jia-li  YU Jiu-ming  WEN Jing-lin
Affiliation:(1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
Abstract:Aiming at the main problems of the hot-dip galvanized guardrails for superhighway, the carbon steel plate with stainless steel cladding was recommended as a new guardrail material. The preparation of stainless steel cladding guardrail by brazing/hot-rolling process was proposed, the stainless steel sheet and carbon steel plate are bonded together first by brazing in furnace, then the bonding strength is improved by hot-rolling. The results showed that an effective braze welding can be obtained by using a silver-base soldering flux developed, in which the Ag content is 15wt.%. The following parameters are regarded as ideal: the brazing temperature is 720-730°C, at which the time needed is 3-4 min. The soldering flux layer shows good plasticity in hot-rolling process. When the percent reduction is less than 30%, no cracks and lamination are found in the soldering flux layer after hot-rolling, with the shear strength of stainless steel clad guardrails up to 338.4 MPa.
Keywords:superhighway  stainless steel cladding guardrail  brazing  soldering flux  hot-rolling
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