FIELD: process engineering.
SUBSTANCE: invention relates to powder metallurgy, particularly, to production of articles from granulated refractory nickel alloys by isostatic pressing. Capsule is filled with pellets to be subjected to isostatic pressing to make blank in shell. Shell is removed from entire surface of said blank to produce semi-finished product to be machined to volume exceeding that of finished product by, at least, 5%. Angles of transition between thin and bulky zones of semi-finished product are rounded to radius of, at least, 3 mm. Metal layers left on outer surfaces of said thin and bulky zones for machining allowance are related as, at least, 1.4. Heat treatment and final machining are carried out to sizes of finished product.
EFFECT: regular isotropic microstructure and mechanical properties, higher yield.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING OF ARTICLES FROM GRANULATED HEAT RESISTING NICKEL ALLOYS | 2014 |
|
RU2556848C1 |
| METHOD OF OBTAINING A PRODUCT OF HEAT-RESISTANT NICKEL ALLOY | 2017 |
|
RU2649103C1 |
| MANUFACTURING METHOD OF ITEMS IN FORM OF DISCS OR ROLLS OF GAS-TURBINE ENGINES FROM PELLETISED HEAT-RESISTANT NICKEL ALLOYS | 2010 |
|
RU2433204C1 |
| METHOD FOR MAKING PRODUCTS FROM GRANULES MADE FROM NICKEL-BASED ALLOYS OR FROM TITANIUM-BASED ALLOYS | 2023 |
|
RU2799458C1 |
| CONTAINER FOR HOT ISOSTATIC PRESSING OF ITEMS FROM GRANULATED METAL POWDERS | 2013 |
|
RU2544719C1 |
| METHOD OF MANUFACTURING COMPOSITE WORKPIECES OF DISC-DISC AND DISC-SHAFT TYPE OUT OF HEAT-RESISTANT TITANIUM AND NICKEL ALLOYS | 2015 |
|
RU2610658C2 |
| PROCEDURE FOR THERMO-MECHANICAL PROCESSING OF WORK-PIECES OUT OF GRANULES OF HIGH-ALLOYED HEAT-RESISTANT ALLOYS ON NICKEL BASE | 2008 |
|
RU2388844C1 |
| METHOD OF FABRICATING VARIABLE STRUCTURE OVER POWDER WORKPIECE CROSS-SECTION | 2011 |
|
RU2455115C1 |
| METHOD TO PRODUCE PRODUCTS FROM COMPLEX-ALLOYED POWDER HEAT-RESISTANT NICKEL ALLOYS | 2012 |
|
RU2516267C1 |
| METHOD OF MANUFACTURING PRODUCTS FROM REFRACTORY NICKEL ALLOY | 2001 |
|
RU2215059C2 |
