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你知道波纹膨胀节所能承受的极限温度是多少吗?

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你知道波纹膨胀节所能承受的极限温度是多少吗?

发布日期:2018-02-19 作者:贵州波纹管销售厂家 点击:

你知道波纹膨胀节所能承受的极限温度是多少吗?

Do you know what the limit temperature can be borne by the corrugated expansion joint?


贵州波纹管销售厂家

的金属膨胀节在焊接过程中,焊缝经常会有气孔发生,但是在正常工作中怎样来防止焊缝产生气孔呢?中科作为专业的膨胀节生产厂家,贵州波纹管销售厂家现在就金属波纹膨胀节在焊缝中有气孔发生来谈几点经验之谈,对气孔生产采取几项防范措施:

During the welding process of metal expansion joint of bellows manufacturer in Guizhou, there are always pores occurring. But how do we prevent pores from occurring in normal work? In science as a professional manufacturer of expansion joint bellows, Guizhou sales manufacturers now have metal bellows expansion joints porosity to talk about a few wise remark of an experienced person in the weld, take some preventive measures on stomatal production:


1、严禁使用表皮开裂、变质、剥落、偏心或焊芯严重锈蚀的焊条;

1, prohibited the use of skin cracking, spalling, metamorphism, eccentric or severe corrosion of electrode welding core;


2、焊条和焊剂使用前,应按规定要求进行烘烤,一般酸性焊条烘烤温度为150-200摄氏度,碱性焊条烘烤温度为350一400摄氏度,烘干后放在100- 150℃的焊条保温箱内,随用随取,并且要严格按照焊条说明书的要求进行焊条烘烤,不能以较低的烘干温度、较长的烘烤时间来代替,也不宜重复烘干;

2, electrodes and flux before use should be according to the requirements of the general acid electrode baking, baking temperature is 150-200 degrees Celsius, the basic electrode baking temperature of 350 to 400 degrees Celsius, after drying on the 100-150 C electrode insulation box, with access to, and to conduct a manual welding electrode baking in strict accordance with the requirements no, instead of the drying temperature, baking time longer than the low, also should not be repeated drying;


3、气体保护焊时要注意气体的纯度和含水量,必须符合有关标准的规定,将二氧化碳气瓶倒遥一段时间后,能从瓶阀内放出气瓶中的残存的水,降低二氧化碳气体中的含水量,在气路系统中装设干燥器能降低保护气体或乙袂中的含水量;

翡翠棋牌3, gas welding should pay attention to the purity of the gas and water, must comply with the provisions of the relevant standards, the carbon dioxide cylinder down. After a period of time, can release the cylinders in the remaining water from the bottle inside the valve, reduce the water content of carbon dioxide gas in the dryer set in the gas system which can reduce the protective gas or not the water content of b;


4、波纹膨胀节碳素钢气焊时应选用中性焰,操作时要熟练,协调。

4, bellows welding of carbon steel should be used in the operation to the neutral flame, good coordination。


5、膨胀节焊接施工前应对焊丝、母材的坡口及其两侧进行清理,彻底除去油污、水分、锈斑等脏物;

5, the expansion of groove and welding section on both sides before the construction of base metal wire, with clean, thoroughly remove oil dirt, moisture, rust and other dirt;


6、选用合适的焊接电流和焊接速度,采用短弧焊接,为利于气体的充分逸出,避免产生气孔缺陷,预热可减小慢熔的冷却速度;

6, choose the appropriate welding current and welding speed, and use short arc welding to facilitate the full escape of gas and avoid porosity defects. Preheating can reduce the cooling rate of slow melting.


7、焊接时应防止风吹雨淋等恶劣环境的影响,室外进行气体保护焊时要设置挡风板,焊接管子时要注意管内穿堂风的影响;。

7, welding should be to prevent the effects of wind and rain and other harsh environment, outdoor gas welding should be set when the wind board, welding pipes should pay attention to effect of tube chuantangfeng;.


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