FIELD: chemical and heat treatment of metals and alloys, possibly hardening surfaces of working organs of technological equipment for food production and consumers' containers for packaging food products.
SUBSTANCE: method comprises steps of applying coating and further laser working. Coating is applied by chrome deposition at cathode density of electric current 3.5 - 5.5 mA/mm2 for 60-90 min from aqueous electrolyte or by forming layer of iron borides at temperature 800-1000°C for 150-180 min from melt salt. Laser treatment is performed in mode of pulse irradiation at specific power 2.4 - 2.6 kWt/mm2 and at scanning rate 1.75 - 2.25 mm/s.
EFFECT: improved micro-hardness and adhesion strength due to formation of diffusion zone of solid solution iron-chrome or zone of iron borides on parts of manufacturing equipment for rubbing action in food making or grain processing industry branch.
1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF THE CHEMICAL-THERMAL-TREATMENT OF THE STEEL ARTICLES | 2005 |
|
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| METHOD OF ELECTRIC EROSION SURFACE BORATING OF PARTS MADE FROM STEEL AND CAST IRON | 2007 |
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| METHOD TO APPLY COMPOSITE ELECTROCHEMICAL COATINGS ONTO ITEMS WITH SUBSEQUENT ELECTROTHERMAL TREATMENT | 2011 |
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| METHOD OF MANUFACTURE OF BORATED POWDER PRODUCTS | 1999 |
|
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| FORMATION METHOD OF DIFFUSIVE CORROSION-RESISTANT NANOSTRUCTURED PROTECTIVE COAT ON SURFACE OF METAL PRODUCT | 2008 |
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| METHOD OF WORN-OUT STEEL PARTS RESTORATION AND STRENGTHENING | 2008 |
|
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| METHOD FOR APPLYING ANTIFRICTION COATINGS | 2003 |
|
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| METHOD FOR PRODUCTION OF NICKEL-CHROME DIBORIDE COMPOSITE ELECTROCHEMICAL COATINGS | 2012 |
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| COMPOUND USED FOR SURFACE LASER HARDENING OF PARTS MADE FROM CONSTRUCTION STEELS | 2007 |
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RU2345174C1 |
