原文：
阀门的腐蚀，通常被理解为阀门金属材料在化学的或电化学的环境作用下所受到的破坏。由于“腐蚀”现象出现于金属与周围环境自发的相互作用当中，因此，怎样将金属与周围环境相隔绝或更多的使用非金属合成材料，则成为人们普通关注的问题。 众所周知，金属的腐蚀破坏对阀门的作用期限，可靠性和使用寿命有相当大的影响。机械和腐蚀的作用因素对金属的作用大大地增加了接触表面总的磨损量。阀门在操作过程中，摩擦的表面总的磨损量。阀门在操作过程中，摩擦的表面由于同时的机械作用和金属与环境进行化学的或电化学的互相作用的结果产生磨损和破坏。对阀门而言，其管道工作气候条件的复杂；石油、天然气和油层水等介质中硫化氢、二氧化碳和某些有机酸的出现使其金属表面的破坏力增大，从而迅速失去工作能力。 由于金属的化学腐蚀取决于温度、磨擦零件的机械负荷、润滑材料中所含的硫化物及其抗酸的稳定性与介质接触持续的时间和金属对氮化过程的催化作用、腐蚀浸蚀性物质的分子对金属的转换速度等等。因此，金属阀门的防腐方法（或措施）及合成材料阀门的应用，便成为目前阀门行业研究的主题之一。 一、 金属阀门的防腐，可理解为在金属阀门上涂覆保护其不受腐蚀的条件保护层（如漆、颜料、润滑材料等等），使阀门无论是在制造、保存、运输还是在其使用的全部过程中都不受腐蚀。 金属阀门防腐的方法决定于所需求的保护期限、运输和保存条件、阀门构造特点和材料，当然，适应考虑解除防腐的经济效果。 金属阀门及其零部件防腐的方法主要有4种： 1、将易挥发的腐蚀抑制剂放入蒸汽的大气中（用阻化纸包裹，吹动抑制空气通过制品腔室等等）。 2、利用被阻化的水和酒精溶液。 3、将防腐（保护）材料薄层涂于阀门及其零部件表面。 4、将被阻化的薄膜或聚合物的薄层涂于阀门及其零部件表面。 （注：目前的阀门生产企业，广泛应用润滑材料和水阻化溶流来防腐。） 二、 材料阀门的应用 合成材料阀门，在许多腐蚀性工况中都优于金属阀门，首先是抗腐蚀性，其次是净重，至于其强度，要取决于增强纤维的形状、排列和数量。（一般来说，纤维的百分比越大，合成材料的强度越大。）在阀门应用中，纤维的重量含量基本范围为30%-40%，而其化学稳定性主要由在最终产品中灌封纤维的树脂本体特性决定。在合成材料阀门中，其固态聚合物本体既可以是热塑性塑料（如PVC-聚偏氟乙烯、PPS-聚苯硫醚等），也可以是热固性树脂（如聚酯、乙烯其及环氧树脂等）。热固性树脂在介温状态下保持其强度的性能优于热塑性塑料，（即热固性树脂具有较高的热变形温度）。（注：在使用工况中，合成材料的抗热性能的测定被称为热变形温度。） 目前，化工流程阀门最常用的合成材料为乙烯基环氧树脂（热塑料材料），其增强纤维为切碎的玻璃纤维（1/4英寸长）和切碎的石墨纤维（1/4英寸长）。下表就最广泛使用的合成材料的性能与耐腐蚀金属的性能作一比较。 玻璃增强型乙烯基 石墨增强型乙烯基 石墨增强型PPS 316SS Hast-C 拉伸强度（Psi） 4000 6000 26000 85000 90000 弯曲强度(Psi) 8000 12000 35000 NA NA 压缩强度(Psi) 14000 18000 21000 85000 90000 热变形温度（°F） 295 7320 520 NA NA 热膨胀系数（in/in/°F） 15×10-6 15×10-6 13×10-6 6.3×10-6 9.9×10-6 注：NA即不适用的（或无效的） 从表面分析，玻璃和石墨增强合成材料与金属相比，其抗拉强度较低，因此，合成材料阀门受应力较大的部位应有较厚的截面并附有加强筋以达到与金属相同的性能。 由于合成材料阀门的耐腐蚀性能、高强度和轻重量，使其成为在许多金属或玻璃纤维增强塑料管道系统腐蚀性工况中，较经济的可选阀门产品。在化工流程工况中，合成材料阀门的使用前景{jj0}。 在阀门工业中， 有机材料和合成材料的使用，已不是传统上金属与非金属阀门材料的概念。陶瓷（可以把阀门的使用温度由400℃提高到1200℃以上）、塑料（具有防锈耐蚀的特点）、合成材料（具有耐腐蚀、重量轻、强度高的特点）、记忆合金（利用形状记忆合金或温度记忆合金的可逆性和高弹性来制造的阀门）等。新型材料，正在开发出大批具有高性能的阀门新产品。新技术的发展，使各种工程材料应用于阀门制造业已成为可能。

“ Valves of metal and synthetic materials Anticorrosion ”是由提供的阀门新闻，译文仅供参考。另外，中国截止阀网还提供相关产品搜索： 、 、 、 、 、 、 、 、 。

译文：
Corrosion of the valve, the valve metal is usually interpreted as chemical or electrochemical materials in the environment under which the damage. As the "corrosion" phenomenon seen in the metal and spontaneous interaction among the environment, therefore, how the environment around the metal with the use of isolated or more non-metallic synthetic materials, has become the concerns of ordinary people. As we all know, metal corrosion damage on the role of the valve duration, reliability and service life have a considerable impact. The role of mechanical and corrosion factors on the role of the metal substantially increased the total contact surface wear. Valve in operation, the total surface friction wear. Valve in operation, the friction of the surface Because of the role and metals and machinery for chemical or electrochemical environment, the interaction of the outcome wear and damage. On the valve, the work of its pipeline complex climatic conditions; oil, natural gas and oil water medium hydrogen sulfide, carbon dioxide and some organic acids appear to increase the destructive power of the metal surface, which quickly lose their ability to work. Chemical corrosion of the metal depends on temperature, the friction parts of the mechanical load, lubrication materials contained in the sulfide and acid stability and media exposure duration and the catalytic metal on the nitridation process, the corrosion attack by material elements of the metal conversion speed and so on. Therefore, the metal valve corrosion methods (or measures) and the application of synthetic material valve, the valve industry research will become one of the subjects. A metal valve preservation, understood as the coated metal valve to protect against corrosion protection layer conditions (such as paints, pigments, lubricating materials, etc.), whether the valve is in the manufacturing, storage, transport Or all in the course of its use are not subject to corrosion. Metal valve determined by the method of corrosion protection needs of the period, transport and storage conditions, the valve construction features and materials, of course, adapt to consider lifting the economic effects of corrosion. Corrosion of metal valves and parts are mainly four kinds of methods: 1, the volatile corrosion inhibitor into the vapor in the atmosphere (with the resistance of paper packages, blow air through the inhibition of chamber products, etc.). 2, used by inhibition of water and alcohol solution. 3, the corrosion (protection) material thin layer onto the surface of the valve and its components. 4, will be resistance of the thin film or polymer onto the surface of the valve and its components. (Note: At present, the valve manufacturer, widely used in lubricating materials and melting flow of water resistance to corrosion.) Second, the material application of the valve Synthetic material valve, in many corrosive conditions better than the metal in the valve, first of all anti-corrosion, followed by net weight, as its strength, depending on the shape of reinforcing fibers, arrangement and quantity. (In general, the greater the percentage of fibers, synthetic materials, the greater the intensity.) Valve applications, the weight of fiber content in the range of 30% -40%, mainly by its chemical stability and irrigation in the final product ontological characteristics of the fiber resin sealed the decision. Valve in composite materials, its solid polymer body may be either thermoplastic (such as PVC-PVDF, PPS-polyphenylene sulfide, etc.) can also be a thermosetting resin (eg polyester, vinyl and epoxy it resin, etc.) Thermosetting resin in the medium temperature state to maintain its superior strength thermoplastic (thermosetting resin that has a high heat distortion temperature). (Note: The condition of the use of synthetic materials, the determination of heat resistance is known as heat distortion temperature.) Currently, the most commonly used chemical process valve composite materials for the vinyl resin (thermal plastic material), the reinforced fiber is chopped glass fiber (1 / 4 inch long) and chopped graphite fiber (1 / 4 inch length). The table on the most widely used synthetic materials performance and corrosion resistance properties of the metal to make a comparison. Glass-reinforced vinyl vinyl reinforced graphite graphite reinforced PPS 316SS Hast-C Tensile strength (Psi) 4000 6000 26000 85000 90000 Bending Strength (Psi) 8000 12000 35000 NA NA Compressive Strength (Psi) 14000 18000 21000 85000 90000 Heat distortion temperature (° F) 295 7320 520 NA NA Thermal expansion coefficient (in / in / ° F) 15 × 10-6 15 × 10-6 13 × 10-6 6.3 × 10-6 9.9 × 10-6 Note: NA is not applicable (or invalid) From the surface analysis, glass and graphite reinforced composite materials and metals compared to the low tensile strength, therefore, synthetic materials, a large part of the valve by the stress of the section should be accompanied by thick ribs and metal to achieve the same performance. As the synthetic material valve corrosion resistance, high strength and light weight, making it in many metal or glass fiber reinforced plastic piping systems in corrosive conditions, more economical alternative valve products. Conditions in the chemical process, the synthetic material the use of valves an excellent prospect. In the valve industry, organic materials and the use of synthetic materials, not the traditional metal and non-metallic materials, the concept of the valve. Ceramics (the valve can be used to improve the temperature from 400 ℃ to 1200 ℃ above), plastic (with rust corrosion features), synthetic materials (corrosion resistant, light weight, high strength characteristics), memory alloy (using shape memory alloys or the reversibility of the temperature memory alloy, and high flexibility to manufacture the valve), etc.. New material, is developing a large number of new products with high performance valves. The development of new technologies, engineering material used to make all kinds of valve manufacturing industry has become possible.