行业新闻

原文：
Country valve industry has fast developed in recent years, but still low overall level of the industry, product technology content is low, many Shenshu valve is also key for high import dependence. Some experts estimate that the level of our valves, compared with foreign advanced Check Valves countries to 10 to 20 years behind. Not long ago, China's valve industry, with Europe to strengthen the exchange of the valve manufacturing industry, has organized more than 10 domestic enterprises valve veterans visiting Europe, learned many valuable experiences of foreign counterparts, while the Butterfly Valves valve industry compared with foreign , also see our own shortcomings. Process gaps Welding craft, the German company Weiman Zu KSB valves used in nuclear radiation resistant sealing material of Yao Qiu, Yi Guang Fan Caiyongteshu welding cobalt powder Jinxing Wu Han Jie; France Wieland valve company will preheating before welding, automatic welding, after welding treatment in the same equipment or processing production line with a complete, whether before welding, welding, after welding,Safety valves handling, temperature control can be achieved to ensure the welding quality. The welding on domestic technology behind the valve, and some also use old-fashioned welding, welder low level of technology, the solder material is also common materials, special valve design reach. Many enterprises engaged in production and sales all day, very few improvements in the technique on studying. In forging the use of new technology, the German company KSB valve Reducing Valves material to high temperature alloy steel F91, F22-based, while the high-pressure valve Youyi forgings mainly to ensure the reliability and economy. Of the large volume following valve 600Lb using forging and welding, the valve is not caused by casting porosity, loose, and many other defects, and greatly reduce the waste of free forging materials, economy greatly improved. The domestic industry mostly valve rough pieces of multi-casting, forging the little used in the following high pressure valves 600Lb forging more easy to find. This regard, manyAPI Cast Steel Valves enterprises in order to reduce costs, mostly by steel casting, low pressure cast iron pieces and more low-cost materials and processing technology is simple. Quality management and equipment gaps
原文来自：http://www.nytimes.com/1990/07/24/nyregion/engineers-battle-to-restart-pump-to-halt-sewage-flow.html

Engineers Battle to Restart Pump to Halt Sewage Flow;是由上海一环流体控制设备有限公司提供的阀门新闻，中文译文仅供参考，以下提供站内导航搜索：

中国旋塞阀网旋塞阀产品旋塞阀知识旋塞阀厂商旋塞阀博客旋塞阀行业新闻

以下是参考译文：

译文：阀门业行业水平低发展快亟待提升创新能力
我国阀门行业虽然近年来发展速度较快，但行业的整体水平仍低，产品技术含量低，许多参数高的关键阀门还依赖进口。有专家估计，我国阀门水平与国外先进国家相比要落后10~20年。前不久，中国液位计阀门行业为加强与欧洲阀门制造行业的交流，先后组织了国内10余家阀门企业的老总出访欧洲，学到了许多国外同行的可贵经验，同时与国外阀门行业相比，也看到了我们自身的不足。加工工艺上的差距在焊接工艺上，德国KSB公司为满足核级阀门的密封材料抗辐射的要求，已特种阀门广泛采用特殊焊粉进行无钴焊接；法国威兰阀门公司将焊前预热、自动焊接、焊后处理在同一设备或同一条加工生产线上完成，无论焊前、焊中、焊后处理，温度都可以实现自动控制，保证焊接质量。而国内在阀门焊接上工艺落后，有的还采用陈旧的焊接方法，焊工技术水平低，所焊材料也是普通材料，达不到特殊阀门设计要求。好多企业整天忙于产销，很少在工艺上进行钻研改进。在模锻件新工艺的运用上，德国KSB公司生产阀门材质以耐高温合金钢F91、F22为主，而高压阀门又以锻造件为主，保证了产品的可靠性和经济性。对批量较大的600Lb以下的闸阀采用模锻，并进行焊接，阀门没有因铸造而造成气孔、疏松水力控制阀等诸多缺陷，并大大减少自由锻的材料浪费，经济性大为提高。而国内行业阀门毛坯件大都以铸造件多，采用模锻的很少，在600Lb以下压力高的阀门电动执行器模锻更可谓凤毛麟角。这方面好多企业为了减少成本，大都采用铸钢件，低压的气动执行器采用铸铁件多，材质成本低，加工工艺简单。质量管理及设备方面的差距

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