Abstract: A powder composition for warm compaction comprising an iron-based powder and a lubricant powder consisting essentially of an amide described by the following formula D-Cm-B-A-B-Cm-D wherein D is —H, COR, CNHR, wherein R is a straight or branched aliphatic or aromatic group including 2-21 C atoms; C is the group —NH (CH)n CO—; B is amino or carbonyl; A is alkylene having 4-16 C atoms optionally including up to 4 O atoms m is an integer 1-10 and n is an integer 5-11.

Abstract: A powder composition for warm compaction comprising an iron-based powder and a lubricant powder consisting essentially of an amide described by the following formula D—Cm—B—A—B—Cm—D wherein D is —H, COR, CNHR, wherein R is a straight or branched aliphatic or aromatic group including 2-21 C atoms; C is the group —NH(CH)nCO—; B is amino or carbonyl; A is alkylene having 4-16 C atoms optionally including up to 4 O atoms m is an integer 1-10 and n is an integer 5-11.

Abstract: The present invention concerns powder compositions including iron-containing powders, additives, lubricant and flow agents. The powder compositions essentially consist of iron-containing particles having additive particles bonded thereto by a molten and subsequently solidified lubricant for the formation of aggregate particles and from about 0.005 to about 2 percent by weight of a flow agent having a particle size below 200 nanometers.

Abstract: The invention concerns a process for the preparation of a lubricant combination including to steps of selecting a first and a second lubricant; mixing the lubricants and subjecting the mixture to conditions for adhering the particles of the second lubricant to the particles of the first lubricant in order to form a lubricant combination of aggregate particles having a core of the first lubricant, the surface of the core being coated with particles of the second lubricant. The invention also concerns a surface modified lubricant combination including a core of a first lubricant, the surface of which is coated with particles of a second lubricant.

Abstract: The invention concerns a process for the preparation of a lubricant composite for powder metallurgy including the steps of selecting a first lubricant having a melting point above 120° C. and a second lubricant having a melting point below 110° C.; mixing the lubricants at an elevated temperature in order to melt the lubricants and subjecting the mixture to rapid for providing a lubricant composite including a metastable phase. The invention also concerns the obtained lubricant composite.

Abstract: This invention concerns a lubricant for warm compaction of iron-based metallurgical powder compositions. 50 to 100% by weight of the lubricant is a polyester, aromatic or partly aromatic, which has a number-average molecular weight Mn of 5,000-50,000. This invention further concerns a metal powder composition containing the lubricant, a method for making sintered products by using the lubricant, and use of the same in warm compaction of metallurgical powders.

Abstract: The present invention concerns powder compositions including iron-containing powders, additives, lubricant and flow agents. The powder compositions essentially consist of iron-containing particles having additive particles bonded thereto by a molten and subsequently solidified lubricant for the formation of aggregate particles and from about 0.005 to about 2 percent by weight of a flow agent having a particle size below 200 nanometers.

Abstract: The invention concerns a process for the preparation of a lubricant composite for powder metallurgy including the steps of

Abstract: The invention concerns a process for the preparation of a lubricant combination including to steps of selecting a first and a second lubricant; mixing the lubricants and subjecting the mixture to conditions for adhering the particles of the second lubricant to the particles of the first lubricant in order to form a lubricant combination of aggregate particles having a core of the first lubricant, the surface of the core being coated with particles of the second lubricant. The invention also concerns a surface modified lubricant combination including a core of a first lubricant, the surface of which is coated with particles of a second lubricant.