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為你介紹自動排氣閥的特點

發布時間:2017-06-09 17:29:47   發布人:http://www.aiqin1.cn
閥門密封面損壞的原因有是分為人為損壞和自然損壞兩種的.人為損壞,一般是因為設計不周,制造不精,選材不當,安裝不正,使用不好和維修不務等因素引起的,而自然損壞則是指閥門在正常工作情況下的磨損,是介質對密封面不可避免的腐蝕和況等造成的損壞,可以總結出造成密封面損壞的原因,可歸納為如下幾種:
The damage causes of the valve sealing surface is divided into two kinds of man-made damage and natural damage. The damage, usually because of poor design, manufacturing is not fine, improper selection, installation is not correct, use and maintenance services do not cause bad factors, and natural damage refers to the valve in the normal work wear under the condition of medium on the sealing surface is damaged inevitably caused by corrosion and condition, can be summed up the causes of damage to the sealing surface, can be summarized as following:
1、密封面加工質量不好。主要表現在密封面上有裂紋,氣孔和夾渣等缺陷,密封面硬度過高或過低,是由于選材不對或熱處理不當引起的;密封面硬度不勻,不耐腐蝕,主要是由于在堆焊過程中將底層金屬吹到上面來了,沖淡了密封面合金成分所引起的。
1, sealing surface processing quality is not good. Mainly there are cracks in the sealing surface, porosity and slag and other defects, the sealing surface hardness is too high or too low, is not due to improper material or heat treatment; uneven sealing surface hardness, corrosion, is mainly due to the welding process in metal bottom blown to the above, dilute the sealing surface of alloy component caused by.
2、造型不當和操作不良所的損壞,安裝不正和維修不力導致密封面工作不正常,閥門帶病運轉,過早地損壞了密封面。

2, improper shape and bad operation of the damage, improper installation and maintenance, resulting in sealing surface work is not normal, the valve runs in disorder, prematurely damaged the sealing surface.
3、介質的化學腐蝕。介質直接與密封面起化學作用,腐蝕密封面.電化學腐蝕.密封面互相接觸,密封面與關閉體和閥體的接觸以及介質的濃度差,氧濃差等原因,發生電化學腐蝕。
3, chemical corrosion of medium. Medium direct chemical reaction with the sealing surface, sealing surface corrosion. The electrochemical corrosion. Contact between the sealing surface, sealing surface and the closure of the valve body and the concentration of media exposure and poor, poor concentration of oxygen causes, electrochemical corrosion.
4、介質的沖蝕。它是介質流動時對密封面磨損,沖刷,汽蝕的結果.介質混注和局部汽化時,產生氣泡爆破沖擊密封面表面,造成局部損壞.介質在一定的速度下,介質中的浮游細粒沖撞密封面,使其造成局部損壞;高速液動的介質直接沖刷密封面,使其造成局部損壞。
4. Erosion of medium. It is the medium flow of the sealing surface wear, erosion, cavitation results. The medium mixed injection and local vaporization, air explosion impact surface of the sealing surface, resulting in local damage. Medium at a certain speed, medium fine-grained pelagic collision sealing surface to cause local damage; direct scouring medium high speed liquid the sealing surface to cause local damage.
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Our company is a network of die manufacturers, excellent products, perfect service, sincere cooperation with you is the basis, the pursuit of sincerity, the right choice is useful bridge, we warmly welcome friends to our company to negotiate, guidance, and seek common development!

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