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一、问题的提出 随着高压喷射钻井技术的发展,提高高压泥浆管汇质量的问题已愈来愈引起人们的关注。经综合分析管汇的机械性能、铸造性能、焊接性能和经济性之后,目前一般认为,350公斤/厘米~2泥浆管汇的材料以采用ZG35Ⅱ为宜。但是,以前生产的350公斤/厘米~2泥浆管汇存在以下两个问题: 1.管汇铸件在强度试压时,若按照我国的国家标准取试验压力为最高工作压力的1.5
First, the question raised With the development of high-pressure jet drilling technology to improve the quality of high-pressure slurry manifold has attracted more and more attention. After a comprehensive analysis of the mechanical properties of the manifold, casting performance, welding performance and economy, it is generally believed that 350 kg / cm ~ 2 mud manifold material to ZG35 Ⅱ is appropriate. However, the previous production of 350 kg / cm ~ 2 mud manifold has the following two problems: 1. Pipe sink castings in the strength of pressure test, if according to China’s national standard test pressure to the maximum working pressure of 1.5