原文：
         产生原因

　　1.铸铁件铸造质量不高，阀体和阀盖体法兰上有砂眼、松散组织、夹渣等缺陷

　　2.天冷冻裂；

 　　3.焊接不良，存在着夹渣、未焊接，过滤器应力裂纹等缺陷

　　4.铸铁阀门被重物撞击视镜后损坏

 　　预防和解决办法

　　1.提高铸造质量，安装前严格按规定进行强度试验；

 　　2.对气温在0°和0°以下的阀门，安全阀应进行保温或拌热，停止使用的阀门应排除积水

　　3.由焊接组成的阀体和阀盖的焊缝，管接头 应按有关焊接操作规程进行，焊后还应进行探伤和强度试验；

 　　4.阀门上禁止推放重物，不允许用手锤撞击铸铁和非金属阀门，大口径阀门的安装应有支架。 　

“ Valve body and valve cover leak causes and solutions ”是由中国减压阀网提供的阀门行业新闻，译文仅供参考。另外，中国减压阀网还提供相关产品搜索： 蒸汽减压阀、 天然气减压阀、 液化气减压阀(煤气减压阀)、 氢气减压阀、 氮气减压阀 等。

译文：
       Cause 1. High quality cast iron castings, valve and valve cover body trachoma, loosely organized, slag and other defects 2. Cold Donglie; 3. Welding bad, there is slag, notSlurry pumps welded, stress cracks and other defects 4. Cast iron valve damage afterMulti-stage pumps impact by a heavy object Prevention and solutions 1. To improve casting quality, Sweage pumps &Sludge pumps pre-installation in strict accordance with the provisions of strength test; 2. On the temperature at 0 ° and 0 ° Pneumatic and electric diaphragm pumps below the valve, should be mixed with thermal insulation or heat, to stop using the water valve should be excluded 3. Formed by the welding body and theOther pumps bonnet of the weld, the welding operation procedures should be carried out after welding, testing and strength testing should be carried out; 4. Valves pushed up against heavy objects, do not allow hand-cast iron and non-metallic hammer hit the valve, the installation of large diameter valves should stand.

原文来源：http://www.1jianyafa.com/

2010-07-29 08:46

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