Sharing about the pressure technology of the Doctor wire in the press section.

Currently, with the speed of the paper machine, the use of scraper blades in the press section has improved. More companies choose to install scrapers in the press section, but there are still many unfamiliar and deficiencies in the use of scrapers in the press section, first of all, there is still a blind spot in terms of pressure control. Through years of experience accumulation, our company gives the following rationalization suggestions: line pressure should be small, keep at 0.08MPa-0.12MPa. Line pressure 0.08MPa-0.12MPa has the following advantages:

①The blade life has improved.

②Roll surface wear is reduced and there will be no scratches, etc.

③The running load of the rollers is reduced.

④The service life of some accessories of DST fixtures is also relatively improved.

Many users in the production line for a long time can not better control the line pressure of the scraper, and may not understand the line pressure adjustment between the scraper and the roller, resulting in blind pressurization, and some even pressurized to 3 kg. Excessive pressure on the scraper line in the press section can produce the following disadvantages:

①Excessive line pressure will cause the scraper to wear out too quickly, and the service life of the scraper blade will be severely reduced.

②Excessive line pressure will lead to wear of the roll surface, scratches, scratches and other problems.

③Excessive line pressure will lead to an increase in the running load of the rolls.

④If the line pressure is too large, the upper plate of the scraper fixture will be deformed or broken, which will affect the use effect.

⑤Excessive line pressure and excessive load will lead to a shortened service life of the airbag.

Therefore, in view of the above situation, our company recommends using the on-site line pressure to maintain 0.08MPa-0.12MPa to better achieve energy saving and emission reduction, reduce the procurement cost of consumables, etc.