摘要:
Mixed magnetic powders for making a magnetic core or body is disclosed, wherein the mixed magnetic powders comprises a first magnetic powder and a second magnetic powder, each of the first magnetic powder and the second magnetic powder being made of a soft magnetic material, wherein the average particle diameter of the first magnetic powder is greater than that of the second magnetic powder, and each of the first magnetic powder and the second magnetic powder has a pre-configured particle size distribution for increasing the density of the magnetic body.
摘要:
Mixed magnetic powders for making a magnetic core or body is disclosed, wherein the mixed magnetic powders comprises a first magnetic powder and a second magnetic powder, each of the first magnetic powder and the second magnetic powder being made of a soft magnetic material, wherein the average particle diameter of the first magnetic powder is greater than that of the second magnetic powder, and each of the first magnetic powder and the second magnetic powder has a pre-configured particle size distribution for increasing the density of the magnetic body.
摘要:
A magnetic core has a structure in which Fe-based soft magnetic alloy particles are connected via a grain boundary. The Fe-based soft magnetic alloy particles contain Al, Cr and Si. An oxide layer containing at least Fe, Al, Cr and Si is formed at the grain boundary that connects the neighboring Fe-based soft magnetic alloy particles. The oxide layer contains an amount of Al larger than that in Fe-based soft magnetic alloy particles, and includes a first region in which the ratio of Al is higher than the ratio of each of Fe, Cr and Si to the sum of Fe, Cr, Al and Si, and a second region in which the ratio of Fe is higher than the ratio of each of Al, Cr and Si to the sum of Fe, Cr, Al and Si. The first region is on the Fe-based soft magnetic alloy particle side.
摘要:
Iron-based metallurgical powders comprising vanadium are described, as well as compacted articles made thereof. These articles have improved mechanical properties.
摘要:
A water-atomized iron-based powder is provided that is pre-alloyed with 0.75-1.1% by weight of Ni, 0.75-1.1% by weight of Mo and up to 0.45% by weight of Mn, and further including 0.5-3.0%, preferably 0.5-2.5% and most preferably 0.5-2.0% by weight of Cu, and inevitable impurities, the balance being Fe. An alloyed iron-based powder composition including a water-atomized iron-based powder
摘要:
The present invention relates to an inoculant alloy for treating thick ferrosilicon-based cast-iron parts, containing between 0.005 and 3% by weight of Rare Earths, characterized in that it also contains between 0.2 and 2% by weight of Antimony.
摘要:
A method of forming a connecting rod, the method including the steps of: forming the connecting rod via a powder forging process; forming an integral wear resistant surface inside a bore of the connecting rod via an inductive heating process after completion of the powder forging process.
摘要:
A member produced by powder forging which retains machinability and improved fatigue strength without having an increased hardness and can retain self conformability after fracture splitting; a powder mixture for powder forging; a process for producing a member by powder forging; and a fracture splitting connecting rod obtained from the member produced by powder forging. The member produced by powder forging is one obtained by preforming a powder mixture, subsequently sintering the preform, and forging the resultant sintered preform at a high temperature. The free-copper proportion in the sintered preform at the time when the forging is started is 10% or lower, and the member obtained through the forging has a composition containing, in terms of mass %, 0.2-0.4% C, 3-5% Cu, and up to 0.4% Mn (excluding 0), the remainder being iron and incidental impurities, and has a ferrite content of 40-90%.
摘要:
A bonded metallurgical powder composition including: an iron-based powder having a weight average particle size in the range of 20-60 μm, in an amount of at least 80 percent by weight of the composition, graphite powder in an amount between 0.15-1.0 percent by weight of the composition, a binding agent in an amount between 0.05-2.0 percent by weight of the composition, a flow agent in an amount between 0.001-0.2 percent by weight of the composition; wherein the graphite powder is bound to the iron-based powder particles by means of the binding agent, and wherein the powder composition has an apparent density of at least 3.10 g/cm3 and a hall flow rate of at most 30 s/50 g. Also, a method for producing a sintered component with improved strength from the inventive composition, as well as to a heat treated sintered component produced according to said method.
摘要翻译:一种粘结冶金粉末组合物,其包含:重量平均粒度在20-60μm范围内的铁基粉末,其量为组合物重量的至少80%,石墨粉末的量为0.15-1.0 组合物的重量百分数,组合物重量的0.05-2.0%的结合剂,组合物重量的0.001-0.2%的流动剂; 其中所述石墨粉末通过所述粘合剂与所述铁基粉末颗粒结合,并且其中所述粉末组合物的表观密度为至少3.10g / cm 3,并且霍尔流速为至多30s / 50g。 另外,本发明的组合物的强度提高的烧结体的制造方法以及根据所述方法制造的热处理烧结部件的方法。