缠绕垫片

产品信息
  名称：缠绕垫  规格：DN10~DN600  
类型
  一：基本型 二：带内环型 三：带外环型 四：带内环和定位环型
填充料
  一：石墨缠绕 二：石棉缠绕 三：四氟缠绕
缠绕垫的简介：
  金属缠绕垫片是目前应用广泛的一种密封垫片，为半金属密合垫中回弹性垫片，由V形或W形薄钢带与各种填充料交替缠绕而成，能耐高温、高压和适应超低 温或真空下的条件使用，通过改变垫片的材料组合，可解决各种介质对垫片的化学腐蚀问题，其结构密度可依据不同的锁紧力要求来制作，为加强主体和准确定位， 缠绕垫片设有金属内加强环和外定位环，利用内外钢环来控制其^大压紧度，对垫片接触的法兰密封面的表面精度要求不高。
缠绕垫的适用范围：
  石油、化工、冶金、电力、船舶、机械等行业的管道、阀门、压力容器、冷凝器、换热器、塔、人孔、手孔等法兰连接处密封。
  适用温度：-196℃--+870℃（柔性石墨）
           ≤+250℃   （聚四氟乙烯）
           ≤+500℃    （特殊石棉）
  介质：适用于高温高压蒸气、油、油气、溶剂、热煤体油等。
缠绕垫的使用说明：
  注意事项
  1、垫片的缠绕部分必须介于法兰密封面之间，不可随意加宽缠绕部分的宽度，这样势必影响螺栓的压紧力，从而影响垫片的密封性能。
  2、基本型垫片^好不要用在凹凸面法兰上，这是因为基本型垫片在法兰轴向压紧力作用下，垫片内圈焊点容易开焊，从而导致垫片失效。
  3、在高温、寒冷或冷热频繁交变、振动较大、强腐蚀介质等恶劣工况条件下，用于平面法兰和凸面法兰的垫片^好加装合理材料的内环。

  4、绝不能用低材质垫片取代高材质垫片。避免材料腐蚀或其它原因造成垫片失效。

product information
Name: Metal Wound Mat Specifications: DN10 ~ DN600
Types of
A: The basic type two: with the ring type three: with the outer ring four: with the inner ring and positioning ring
Filling material
A: graphite winding two: asbestos winding three: four fluorine winding
Spiral wound pad Introduction:
Metal spiral wound gasket is widely used as a kind of gasket, which is a semi-metal gasket in the spring washer, V-shaped or W-shaped thin strip and a variety of packing alternately wound, high temperature, high pressure And to adapt to the conditions of ultra-low temperature or vacuum, by changing the gasket material combinations, to solve a variety of media on gasket chemical corrosion problems, the structure of the density can be made according to different requirements of the locking force, to strengthen the main and accurate Positioning, winding gasket with a metal ring and outside the positioning ring, the use of internal and external steel ring to control the maximum compression, the gasket contact with the flange sealing surface of the surface accuracy is not high.
The scope of spiral wound pad:
Seals of valves, pressure vessels, condensers, heat exchangers, towers, manholes and handholes in the fields of petroleum, chemical industry, metallurgy, electric power, shipping and machinery shall be sealed.
Suitable temperature: -196 ℃ - +870 ℃ (flexible graphite)
           ≤ + 250 ℃ (polytetrafluoroethylene)
           ≤ + 500 ℃ (special asbestos)
Medium: Suitable for high temperature and pressure steam, oil, oil and gas, solvents, hot coal oil.
Metal wound pad instructions for use:
Precautions
1, the gasket winding part must be between the flange sealing surface, not free to broaden the width of the winding part, it will inevitably affect the pressure of the bolt, thus affecting the gasket sealing performance.
2, the basic type of gasket is best not to be used in the convex flange, it is because the basic type gasket in the flange axial compression force, the inner gasket pad easily open welding, resulting in gasket failure .
3, in the high temperature, frequent alternating cold or hot and cold, vibration, corrosive media and other harsh working conditions, the flange for the flat flange and flange gasket is best to install a reasonable material inner ring.
4, must not use low-quality gasket instead of high-quality gasket. Avoid material corrosion or other causes of gasket failure.