FIELD: heat exchange.
SUBSTANCE: invention can be used to connect plates of a brazed plate heat exchanger (BPHE) made of stainless steel. A metal-polymer composition is obtained by mechanically mixing components on a blade mixer and granulating it. The composition contains metal powder of a 03X17H14M3 grade and an organic binder at their following ratio, wt. %: metal powder is 92-94, organic binder is 6-8. The organic binder consists of high-pressure polyethylene (HPP), wax and stearic acid as a plasticizer with the following ratio of binder components, wt. %: HPP is 9-15, wax is 84-90, stearic acid is 1. The mentioned metal powder has a particle size of less than 40 mcm and contains, wt. %: chromium 16.8-18.3, nickel 13.5-15.0, molybdenum 2.2-2.8, manganese 1-2, silicon no more than 0.4, iron - the rest.
EFFECT: invention provides the convenience and accuracy of applying solder while improving the quality of joints of BPHE plates due to the use of metal powder and polymer additives in the composition in specified percentage ratios.
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| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MODIFYING SURFACES OF PLATES OF A BRAZED PLATE HEAT EXCHANGER | 2020 |
|
RU2754338C1 |
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