The causes of cracks in seamless elbows

The causes of cracks in seamless elbows

There are many places in life where seamless elbows are used,and one notable feature is that they do not require arbitrary cutting and welding during the manufacturing process.Because only in this way can it be determined that there will be no gas leakage during the transportation of gases and liquids.We cannot do without maintenance during use,especially for steel composite materials,which are prone to rusting and result in the use of seamless elbows not being as good as before.Therefore,no matter what,as long as it is used for a long time,aging will occur,so seamless elbows also need maintenance.

Below,we will briefly analyze the causes of cracks in seamless elbows:

1、Poor quality pipe blanks due to raw material factors may have internal and external warping,scarring,cracks,etc;

2、An important process in the production of seamless elbows due to temperature factors is heating.Poor heating(uneven,insufficient temperature,etc.)can cause internal warping,etc;

3、The equipment factor will affect the final quality of the pipe material from the moment it is produced,including all equipment components.For example,scratches on equipment components can cause external warping and dents;If the piercing machine is not smooth,it may cause difficulty in biting the head of the pipe blank due to water splashing or curling of the skin inside the head;

4、Process problems are also quite complex,including adjustment issues,equipment failures,and pipe quality issues caused by the wear and tear of process components(such as heads,guide plates,rollers,etc.).The problems caused are comprehensive.

The anti wrinkle characteristics of seamless elbows and the usage characteristics of anti wrinkle molds

1、Seamless elbows use high-frequency welded pipes,seamless elbows,and square tubes as raw materials.They are heated by medium frequency electromagnetic interference and pushed into shape through molds or bent into shape according to predetermined trajectories through rocker arms.After the product is formed,the material does not change arbitrarily.

2、Seamless elbows comply with corresponding standards and performance usage and control,demonstrating good performance and playing a good role in them.

3、The seamless elbow anti wrinkle mold includes three parts:the movable mold,the fixed mold,and the bending turntable.

4、The bend pipe anti wrinkle mold is an improvement on the existing bending anti wrinkle mold through structural improvements,which avoids the incorrect structure of the active part of the existing anti wrinkle mold in contact with the bending turntable,and improves the strength and wear resistance of the contact area.

5、The characteristic of bending pipes to prevent wrinkles is that the fixed mold and the bending turntable are respectively connected and fixed to the fixed mold seat on the machine tool through bolts.

6、The movable mold is connected to the movable slider on the machine tool through bolts.The contact part between the movable mold and the bending turntable is comb shaped,embedded with each other,and can slide relative to each other.The purpose of steel structure bend pipes is equivalent to its base material,with a smooth surface quality.

Before use,it is necessary to ensure that the surface and environment of the seamless elbow are clean,otherwise it is prone to corrosion and chemical reactions.When removing rust,we can also use acid washing method.Generally,many workers use chemical principles and electrolysis to remove rust.But if chemical reactions are used to remove rust,workers should wear protective equipment before cleaning to avoid injury caused by chemical elements.But now many places do not support using chemical acid to clean seamless elbows,because although chemical acid cleaning has a good rust removal effect,it can also have an impact on the environment,and even affect soil quality.If there are good methods,use good methods for maintenance,which can also ensure the long-term use of seamless elbows.