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一、前言锅炉汽包是工作在较高温度和压力下的重要受压部件,它的可靠性直接关系到电厂的安全。为了提高经济效益,在保证汽包安全运行的前提下,尽量延长汽包的使用寿命,并能节省材料、简化生产工艺,我们运用断裂力学基本原理,根据我厂生产的锅炉汽包与受压容器用钢的特点,选择19Mn5、14MnMoV和BHW-35三个钢号为试验用材,测定其母材、焊缝及热影响区的断裂韧性,为生产提供依据。二、试验方法一、试验方法 1.试样制备试验用试板全部是在生产条件下制造的,其尺寸及工艺过程与代表产品的试板相一致。
First, the preface Boiler drum is an important part of the work under high temperature and pressure, its reliability is directly related to the safety of the power plant. In order to improve economic efficiency, under the premise of ensuring the safe operation of the steam drum, as far as possible to extend the service life of the drum, and can save material and simplify the production process, we use the basic principles of fracture mechanics, according to the boiler drum and pressure The characteristics of steel container, choose 19Mn5, 14MnMoV and BHW-35 three steel for the test timber, determination of the base metal, weld and heat affected zone fracture toughness, to provide a basis for production. Second, the test method First, the test method 1. Specimen Preparation Test panels are all manufactured under the conditions of production, the size and process and test products on behalf of the same product.