天津市北辰区中关村可信产业园B9-1 Address: B9-1, Trustworthy Industrial Park, Zhongguancun, Beichen District, Tianjin
15522233345 Mobile: 15522233345
许宗涛 Contact: Xu Zongtao
Care and maintenance of seamless steel tubes
The knowledge of seamless steel pipes Many people have learned more about it, but many people only know the knowledge of consumption, sales, use, etc. of seamless steel pipes, but some are very
The important thing is to maintain and maintain!
When the production of seamless steel pipes is stopped, the pickling process of steel pipes will be touched. As for the staff, what are the issues to be aware of when stopping the pickling of seamless steel pipes?
First, it is necessary to wear labor maintenance supplies before pickling. The detailed inspection of the working environment on site should also be suspended, mainly to check whether the sling of the steel pipe is intact and confirm that the front
Abort the job.
Secondly, at the time of pickling, pickling is mainly performed by hydrochloric acid, and the content of ordinary hydrochloric acid is preferably 18% to 20%. The third worker also needs to know the concentration and temperature of the acid and
The tonnage of the pickling pipe in this tank is well understood. These can be discontinued by using professional measuring equipment. Fourth, it is best to control the weight of the pickled steel pipe between 2 and 5 tons at a time.
Hold in 5 to 15 minutes. Time requirements are adjusted based on several stops of weight. The steel pipe also needs frequent vibration during the pickling process. When the pipe is lowered into the acid tank, the steel pipe must be stopped from tilting to prevent it.
Hydrochloric acid accidentally hurts people. Seamless steel pipes are made of high-quality carbon-bonded steels such as 10 #, 20 #, 30 #, 35 #, 45 #, or low-alloy structural steels such as 16Mn, 5MnV, or alloys such as 40Cr, 30CrMnSi, 45Mn2, 40MnB
Structural steel is made by hot rolling or cold rolling. 10 #, 20 # and other low-carbon steel seamless pipes are mainly used for fluid retention pipelines. 45 #, 40Cr and other medium carbon steel seamless pipes are usually used to manufacture mechanical parts
Such as the stress parts of cars and tractors. Ordinary seamless steel pipe should be guaranteed strength and abort the flattening experiment. Hot-rolled steel pipes are delivered in the hot-rolled state or hot-disposal state; cold-rolled steel pipes are delivered in the hot-disposal state.
Hot rolling, as the text suggests, the temperature of the rolled material is high, so the deformation resistance is small, and a large amount of deformation can be completed. Taking the rolling of steel plates as an example, the thickness of ordinary continuous casting slabs is about 230mm, and
Rolling and finishing rolling, the final thickness is 1 ~ 20mm. At the same time, due to the small width-to-thickness ratio of the steel plate, the dimensional accuracy is relatively low, and it is not easy to present the shape problem. It is mainly to control the convexity. Regarding organization please
What is required is generally controlled by controlled rolling and controlled cooling, that is, controlling the rolling temperature, finishing rolling temperature and coiling temperature of the finish rolling to control the microstructure and mechanical properties of the strip.