FIELD: metallurgy.
SUBSTANCE: invention relates to foundry production, particularly, to production of centrifugal pumps impellers steel casting by rotational casting. Method involves pouring a portion of liquid metal into a rotating mold and its crystallisation under centrifugal forces, wherein before pouring metal on inner surface of mold and on rod, receiving liquid metal, applied layer of anti-adhesive coating in form of paint, wherein the material of the mold is a mixture of synthetic resin, hardener and sand, taken at the following ratio: resin from 1.4 to 1.5 % of sand weight and hardener from 20 to 25 % of weight of resin, and forming a cold-hardening mixture for making a mold.
EFFECT: absence of casting and surface defects of impeller casting, increase of its strength and density, increase of casting performance by 10–15 %, reduced labor intensity of casting and casting of impeller.
4 cl, 2 tbl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF ADDING MODIFIER AND ALLOYING AGENTS IN CAVITYLESS CASTING | 2010 |
|
RU2427442C1 |
| METHOD OF PRODUCING CASTS WITH PRESET PROPERTIES OF REQUIRED SURFACE SECTIONS TO PRESET DEPTH IN CONSUMABLE PATTERN CASTING, PARTICULARLY, DRILLING AND CUTTING TOOLS | 2010 |
|
RU2455103C2 |
| METHOD OF ALLOYING METAL SURFACES | 2011 |
|
RU2475331C2 |
| METHOD FOR PRODUCTION OF CAST BAR BILLETS FROM NICKEL-BASED HEAT-RESISTANT ALLOYS | 2019 |
|
RU2714788C1 |
| METHOD OF MAKING 3D MOULDS FROM LOOSE SODIUM SILICATE MIXES USING INVESTMENT PATTERNS | 2012 |
|
RU2512710C1 |
| MANUFACTURING METHOD OF CASTS BY GASIFIED MODELS | 2015 |
|
RU2613244C1 |
| METHOD FOR PRODUCING LARGE-SIZE CASTINGS HAVING COMPLEX-SHAPE INNER CAVITIES WITH USE OF INVESTMENT PATTERNS | 2002 |
|
RU2231414C2 |
| METHOD OF CASTING OF SCREW PROPELLER FROM COPPER-BASE ALLOYS | 1996 |
|
RU2089342C1 |
| MANUFACTURING METHOD OF CASTS BY GASIFIED MODELS | 2015 |
|
RU2619548C2 |
| ELECTROMAGNETIC FORM-INVESTMENT-PATTERN CASTING | 2008 |
|
RU2402405C2 |
