RU2000121966A - IRON-BASED POWDER, METHOD FOR PRODUCING SINTERED PRODUCTS AND SINTERED PRODUCTS MADE BY THIS METHOD - Google Patents

IRON-BASED POWDER, METHOD FOR PRODUCING SINTERED PRODUCTS AND SINTERED PRODUCTS MADE BY THIS METHOD

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Publication number
RU2000121966A
RU2000121966A RU2000121966/02A RU2000121966A RU2000121966A RU 2000121966 A RU2000121966 A RU 2000121966A RU 2000121966/02 A RU2000121966/02 A RU 2000121966/02A RU 2000121966 A RU2000121966 A RU 2000121966A RU 2000121966 A RU2000121966 A RU 2000121966A
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RU
Russia
Prior art keywords
iron
powder
amount
paragraphs
water
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Application number
RU2000121966/02A
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Russian (ru)
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RU2216433C2 (en
Inventor
Йохан АРВИДССОН
Ола ЭРИКССОН
Original Assignee
Хеганес Аб
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Priority claimed from SE9800154A external-priority patent/SE9800154D0/en
Application filed by Хеганес Аб filed Critical Хеганес Аб
Publication of RU2000121966A publication Critical patent/RU2000121966A/en
Application granted granted Critical
Publication of RU2216433C2 publication Critical patent/RU2216433C2/en

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Claims (12)

1. Порошок на основе железа, распыленный водой и отожженный, содержащий, мас. %: Сr 2,5-3,5; Мо 0,3-0,7; Mn 0,09-0,3; Cu < 0,10; Ni < 0,15; Р < 0,02; N < 0,01; V < 0,10; Si < 0,10; W < 0,10; О < 0,25; С < 0,01, остальное - железо и неизбежные примеси в количестве не более 0,5%.1. Iron-based powder sprayed with water and annealed, containing, by weight. %: Cr 2.5-3.5; Mo 0.3-0.7; Mn 0.09-0.3; Cu <0.10; Ni <0.15; P <0.02; N <0.01; V <0.10; Si <0.10; W <0.10; O <0.25; C <0.01, the rest is iron and inevitable impurities in an amount of not more than 0.5%. 2. Порошок на основе железа по п. 1, содержащий, мас. %: Сr 2,7-3,3; Мо 0,4-0,6; Mn 0,09-0,25; O < 0,15; С < 0,007, остальное - железо и неизбежные примеси в количестве не более 0,2%. 2. An iron-based powder according to claim 1, containing, by weight. %: Cr 2.7-3.3; Mo 0.4-0.6; Mn 0.09-0.25; O <0.15; C <0.007, the rest is iron and inevitable impurities in an amount of not more than 0.2%. 3. Способ изготовления спеченного изделия, имеющего прочность на растяжение, по меньшей мере, 750 МПа, без последующей термообработки, заключающийся в том, что распыляют водой порошок на основе железа, содержащий легирующие элементы Сr, Мо и Мn в количестве согласно любому из предыдущих пунктов, отжигают распыленный водой порошок, добавляют графит и факультативно, по меньшей мере, один легирующий элемент, выбранный из группы Cu, Р, В, Nb, V, Ni и W, в количестве, определяемом конечным применением спеченного изделия, прессуют отожженный порошок при давлении, по меньшей мере, 600 МПа, и подвергают спрессованное тело спеканию. 3. A method of manufacturing a sintered product having a tensile strength of at least 750 MPa, without subsequent heat treatment, which consists in spraying with water an iron-based powder containing alloying elements Cr, Mo and Mn in an amount according to any one of the preceding paragraphs the powder sprayed with water is annealed, graphite is added and, optionally, at least one alloying element selected from the group Cu, P, B, Nb, V, Ni and W is used in an amount determined by the end use of the sintered product; lenii of at least 600 MPa and a compressed body subjected to sintering. 4. Способ по п. 3, отличающийся тем, что осуществляют восстановление при атмосферном давлении в восстановительной атмосфере в присутствии Н2 и регулируемых количеств Н2О.4. The method according to p. 3, characterized in that carry out the restoration at atmospheric pressure in a reducing atmosphere in the presence of H 2 and controlled amounts of H 2 O. 5. Способ по п. 3, отличающийся тем, что осуществляют восстановление при низком давлении в практически инертной атмосфере и при откачке СО. 5. The method according to p. 3, characterized in that the recovery is carried out at low pressure in a practically inert atmosphere and during the evacuation of CO. 6. Способ по любому из пп. 3-5, отличающийся тем, что распыленный водой порошок перед отжигом имеет весовое соотношение О: С в пределах 1-4, предпочтительно 1,5-3,5, и наиболее предпочтительно 2-3, и содержание углерода в пределах 0,1-0,9 мас. %. 6. The method according to any one of paragraphs. 3-5, characterized in that the powder sprayed with water before annealing has a weight ratio of O: C in the range 1-4, preferably 1.5-3.5, and most preferably 2-3, and a carbon content in the range 0.1- 0.9 wt. % 7. Способ по любому из пп. 3-6, отличающийся тем, что перед прессованием в порошок добавляют графит в количестве 0,25-0,65, предпочтительно 0,3-0,5 мас. %. 7. The method according to any one of paragraphs. 3-6, characterized in that before pressing the graphite is added to the powder in an amount of 0.25-0.65, preferably 0.3-0.5 wt. % 8. Способ по любому из пп. 3-7, отличающийся тем, что для порошков, содержащих 3-3,5 Сr, количество графита составляет 0,25-0,5 мас. %. 8. The method according to any one of paragraphs. 3-7, characterized in that for powders containing 3-3.5 Cr, the amount of graphite is 0.25-0.5 wt. % 9. Способ по п. 3, отличающийся тем, что температура спекания составляет не больше, чем 1220oС, предпочтительно, менее 1200oС, и наиболее предпочтительно, менее 1150oС.9. The method according to p. 3, characterized in that the sintering temperature is not more than 1220 o C, preferably less than 1200 o C, and most preferably less than 1150 o C. 10. Способ по п. 3, отличающийся тем, что время спекания составляет менее 60 мин, предпочтительно, менее 50 мин, и наиболее предпочтительно, менее 40 мин. 10. The method according to p. 3, characterized in that the sintering time is less than 60 minutes, preferably less than 50 minutes, and most preferably less than 40 minutes 11. Спеченное изделие, изготовленное по любому из пп. 5-8, имеющее общее содержание углерода, по меньшей мере, 0,25%, предпочтительно, по меньшей мере, 0,3%. 11. Sintered product made according to any one of paragraphs. 5-8, having a total carbon content of at least 0.25%, preferably at least 0.3%. 12. Порошок по п. 1 или 2, отличающийся тем, что распыленный водой, отожженный порошок приготовлен согласно способу, описанному в PCT/SE 97/01292. 12. The powder according to claim 1 or 2, characterized in that the sprayed with water, annealed powder is prepared according to the method described in PCT / SE 97/01292.
RU2000121966/02A 1998-01-21 1999-01-21 Iron base powder, method for making sintered article and sintered article made by such method RU2216433C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9800154A SE9800154D0 (en) 1998-01-21 1998-01-21 Steel powder for the preparation of sintered products
SE9800154-8 1998-01-21

Publications (2)

Publication Number Publication Date
RU2000121966A true RU2000121966A (en) 2002-10-27
RU2216433C2 RU2216433C2 (en) 2003-11-20

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US (1) US6348080B1 (en)
EP (1) EP1049552B1 (en)
JP (2) JP4909460B2 (en)
KR (1) KR100601498B1 (en)
CN (1) CN1116944C (en)
AT (1) ATE256520T1 (en)
AU (1) AU738667B2 (en)
BR (1) BR9907190A (en)
CA (1) CA2318112C (en)
DE (1) DE69913650T2 (en)
ES (1) ES2212523T3 (en)
PL (1) PL189271B1 (en)
RU (1) RU2216433C2 (en)
SE (1) SE9800154D0 (en)
TW (1) TW450855B (en)
WO (1) WO1999037424A1 (en)

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