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黄铜阀门的发展前景

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黄铜阀门的发展前景

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  • 发布时间:2019-09-11 22:40
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【概要描述】黄铜阀门的发展前景 (1) sand casting: the earliest production mode in the valve field, because the valve produced by this process is easy to produce sand holes and lead to a series of problems caused by product leakage due to insufficient pressure of the casting type. (2) hot forging: the valve body formed by forging will not have sand holes and its appearance will be more exquisite. Sand blasting, metalworking, parts assembly, product pressure test, packaging and sealing Selection principle According to the control function selection, all kinds of valves have their own functions, which should be paid attention to. According to the selection of working conditions, the technical parameters of common valves include nominal pressure, maximum allowable working pressure, working temperature (minimum and maximum temperature) and medium (corrosiveness and flammability). During selection, the above parameters of working conditions shall be consistent with the technical parameters of valves. According to the installation structure. The installation structure of the pipeline system includes pipe thread, flange, ferrule, welding, hose, etc. Therefore, the installation structure of the valve must be consistent with the installation structure of the pipeline, and the specification and size must be consistent. brass valve Installation mode The valve connected by pipe thread is connected with the pipe thread at the pipe end, wherein the internal thread can be cylindrical pipe thread or conical pipe thread, while the external thread must be conical pipe thread. The gate valve connected with the internal thread is connected with the pipe end, and the length and size of the external thread of the pipe end need to be controlled. In order to avoid excessive screw in of pipe end, the inner end face of the pipe thread of the top pressure gate valve will cause the valve seat deformation and affect the tightness. When the valve connected with pipe thread is installed and tightened, the hexagonal or octagonal part at the same end of the thread and the hexagonal or octagonal part at the other end of the valve shall not be spanned to avoid deformation of the valve. The flange of the flange connected valve and the flange of the pipe end shall not only be consistent with the specification and size, but also with the nominal pressure. In case of leakage of the valve stem during the installation and commissioning of the stop valve and gate valve, tighten the compression nut at the packing, and pay attention that the force shall not be too large to the extent of no leakage. Since the beginning of the 21st century, some well-known domestic copper valve manufacturers have broken the conventional thinking and have the courage to innovate and practice, and have developed a large number of new products, which has greatly improved the scope of application of brass valves in the field of engineering applications. In particular, the successful experimental development of all copper hydraulic control series not only makes a qualitative leap in the manufacturing process of copper valve products, but also greatly promotes the overall competitiveness of the copper valve industry.

黄铜阀门的发展前景

【概要描述】黄铜阀门的发展前景


(1) sand casting: the earliest production mode in the valve field, because the valve produced by this process is easy to produce sand holes and lead to a series of problems caused by product leakage due to insufficient pressure of the casting type.



(2) hot forging: the valve body formed by forging will not have sand holes and its appearance will be more exquisite.



Sand blasting, metalworking, parts assembly, product pressure test, packaging and sealing





Selection principle



According to the control function selection, all kinds of valves have their own functions, which should be paid attention to.



According to the selection of working conditions, the technical parameters of common valves include nominal pressure, maximum allowable working pressure, working temperature (minimum and maximum temperature) and medium (corrosiveness and flammability). During selection, the above parameters of working conditions shall be consistent with the technical parameters of valves.



According to the installation structure. The installation structure of the pipeline system includes pipe thread, flange, ferrule, welding, hose, etc. Therefore, the installation structure of the valve must be consistent with the installation structure of the pipeline, and the specification and size must be consistent.



brass valve



Installation mode



The valve connected by pipe thread is connected with the pipe thread at the pipe end, wherein the internal thread can be cylindrical pipe thread or conical pipe thread, while the external thread must be conical pipe thread.



The gate valve connected with the internal thread is connected with the pipe end, and the length and size of the external thread of the pipe end need to be controlled. In order to avoid excessive screw in of pipe end, the inner end face of the pipe thread of the top pressure gate valve will cause the valve seat deformation and affect the tightness.



When the valve connected with pipe thread is installed and tightened, the hexagonal or octagonal part at the same end of the thread and the hexagonal or octagonal part at the other end of the valve shall not be spanned to avoid deformation of the valve.



The flange of the flange connected valve and the flange of the pipe end shall not only be consistent with the specification and size, but also with the nominal pressure.



In case of leakage of the valve stem during the installation and commissioning of the stop valve and gate valve, tighten the compression nut at the packing, and pay attention that the force shall not be too large to the extent of no leakage.





Since the beginning of the 21st century, some well-known domestic copper valve manufacturers have broken the conventional thinking and have the courage to innovate and practice, and have developed a large number of new products, which has greatly improved the scope of application of brass valves in the field of engineering applications. In particular, the successful experimental development of all copper hydraulic control series not only makes a qualitative leap in the manufacturing process of copper valve products, but also greatly promotes the overall competitiveness of the copper valve industry.

  • 分类:新闻资讯
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  • 发布时间:2019-09-11 22:40
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详情
20世纪80年代初,浙江宁波率先发展制造技术,改变了我国铸铁阀门长期使用的历史。在制造工艺上,最初采用砂型铸造成形工艺,20世纪90年代初改变锻造工艺,进入21世纪初,中国已成为世界铜阀制造中心。无论从工艺、产品设计,还是模具生产、阀门铸造、锻造。
(1)砂型铸造:阀门领域最早的生产方式,由于该工艺生产的阀门容易产生砂眼,并因铸件压力不足而导致产品泄漏等一系列问题。
(2)热锻:锻造成形的阀体无砂眼,外观更加精美。
喷砂、金属加工、零件组装、产品试压、包装、密封
选择原则
根据控制功能的选择,各种阀门都有各自的功能,应引起重视。
根据工作条件的选择,常用阀门的技术参数包括公称压力、最大允许工作压力、工作温度(最低和最高温度)和介质(腐蚀性和易燃性)。选择时,上述工况参数应与阀门技术参数一致。
根据安装结构。管道系统的安装结构包括管螺纹、法兰、卡套、焊接、软管等,因此阀门的安装结构必须与管道的安装结构一致,规格尺寸必须一致。
黄铜阀门
安装方式
管螺纹连接的阀门与管端的管螺纹连接,内螺纹可以是圆柱管螺纹或圆锥管螺纹,外螺纹必须是圆锥管螺纹。
与内螺纹连接的闸阀与管端连接,需要控制管端外螺纹的长度和尺寸。为避免管端拧入过多,顶压闸阀管螺纹内端面会引起阀座变形,影响密封性。
与管螺纹连接的阀门安装拧紧时,螺纹同一端的六角形或八角形部分和阀门另一端的六角形或八角形部分均不应跨距,以免阀门变形。
法兰连接阀门的法兰与管端法兰不仅要符合规格尺寸,还要符合公称压力。
截止阀、闸阀在安装调试过程中,如发现阀杆泄漏,应拧紧填料处的压紧螺母,注意不得用力过大,不得有泄漏。
进入21世纪以来,国内一些知名的铜阀制造企业打破传统思维,勇于创新和实践,开发了大量新产品,极大地提高了铜阀在工程应用领域的应用范围。特别是全铜液压控制系列的成功试验开发,不仅使铜阀产品的制造工艺有了质的飞跃,而且大大提升了铜阀行业的整体竞争力。

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