Method for forming molded article by press molding

A method of forming a compact based on a press forming method, comprising:

• filling raw material powder in a cavity formed by:
• an outer mold and a lower punch, or
• an outer mold, a lower punch and a core rod,
• pressing the raw material powder between an upper punch and the lower punch so as to form a compact, and
• pressing the compact out of the outer mold,
• wherein:
• before the raw material powder is filled in the cavity, a lubricating film of a press forming mold lubricant is formed on at least a part of an inner surface of the outer mold, or an inner surface of the outer mold and an outer circumferential surface of the core rod,
• the press forming mold lubricant consists of
• an oil as a main component,
• 15 to 35 mass % of an extreme-pressure agent, based on a total amount of the press forming mold lubricant, and
• 10 to 20 mass % of a solid lubricant, based on the total amount of the press forming mold lubricant,
• the press forming mold lubricant is formed by adding the solid lubricant and the extreme-pressure agent to a mineral oil, and
• the press forming mold lubricant has a viscosity in a range of from 700 to 22000 mPa·s at 25° C., and
• the raw material powder is pressed and formed into the compact so that a density ratio of the compact is not less than 93%.