| 摘要 |
<p>When, according to the invention, a scraper blade (11) is made for a heat exchanger by simple cutting of a piece of hard-rolled stainless band steel and the processing pipe (2) is simultaneously made of stainless steel, relatively limited wear is achieved, which moreover has no influence on the function of the heat exchanger. To this should be added that the scraper blade (11 ) is inexpensive to make, as the only working is the drilling of holes for riveting the blade (11) to its carrier part (9).</p> |
