US3694173A - Ferrous alloys - Google Patents
Ferrous alloys Download PDFInfo
- Publication number
- US3694173A US3694173A US147706A US3694173DA US3694173A US 3694173 A US3694173 A US 3694173A US 147706 A US147706 A US 147706A US 3694173D A US3694173D A US 3694173DA US 3694173 A US3694173 A US 3694173A
- Authority
- US
- United States
- Prior art keywords
- alloy
- chromium
- copper
- iron
- molybdenum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/1216—Continuous interengaged phases of plural metals, or oriented fiber containing
Definitions
- a sintered ferrous alloy has the composition chromium 10.5-l%, carbon 0.5-2.5%, molybdenum 0.25-5.0%, copper 3-25%, the remainder being iron except for usual impurities and trace elements.
- the alloy can also contain up to a total of 5% titanium, vanadium and/ or cobalt.
- the chromium is introduced in the form of a pre-alloy of 87% iron and 13% chromium
- the copper can be introduced in the form of a pre-alloy of 90% copper, 5% iron and 5% manganese.
- the alloy is useful for the production, by powder metallurgy, of valve seat inserts for internal combustion engines.
- This invention relates to sintered ferrous alloys.
- a sintered ferrous alloy has the composition chromium 10.5-15%; carbon 0.5-2.5%; molybdenum 0.25-5.0%; copper 3-25%; optionally manganese, titanium, vanadium and/or cobalt in total 0-5%; remainder iron, except for usual impurities and trace elements.
- the alloy is formed by mixing powders in the required proportions, pressing these to form a compact, and sintering the compact.
- the alloy has particular application to valve seat inserts for reciprocating internal combustion engines.
- the percentage of chromium is in the range 1 1.5-13.0.
- the powders were mixed together for one hour in a double cone rotary mixer.
- the mixture was then compacted in a press with double-sided pressing action at 40 t.s.i.
- the compact was then sintered in a cracked ammonia atmosphere (less than -35 C. dew point) at 1100 C. for one hour.
- the resulting component was heat-treated to attain the required properties by heating for 15 minutes at 1000 C. and quenching into an oil bath, and finally tempering at 600 C. for one hour in air.
- the resulting component had the following properties:
- the sintered compact may be heat-treated for 2 /2 hours at 1025 C., cooled to room temperature and then heated to 700 C. for one hour in air.
- Fe 73%; Cu 13.5%; Cr 10.8%; C 1.7%; Mn 0.8; M0 0.3% is produced by the following method.
- the compacts were heat-treated by heating for 2%. hours at 1,025 C., cooling to room temperature, and then heating to 700 C. for one hour.
- the heat-treatments were carried out in a substantially inert atmosphere.
- Example number 4 5 6 Density, gmJcc 5. 95 6. 5 6.6 Macro-hardness (Rockwell C) 30 24 26 Mierohardness (Victors Pyramid Number, 30 gm. load) 440 380 440 We claim:
- a sintered ferrous alloy having the composition Percent Chromium 10.5-15 Carbon 0.5-2.5 Molybdenum 0.25-5.0 Copper 3-25 5.
- a sintered ferrous alloy according to claim 1 containing 10.7% of chromium 2% of carbon 0.4% of molybdenum and 15% of copper.
- a sintered ferrous alloy according to claim 1 containing 10.8% of chromium 1.7% of carbon 0.3% of molybdenum 13.5% of copper and 0.8% of manganese.
- a sintered ferrous alloy according to claim 1 containing 15 of chromium 1% of carbon 2% of molybdenum and 6% copper.
- a sintered ferrous alloy according to claim 1 containing 12% of chromium 1% of carbon 1% of molybdenum 6% of copper.
- a sintered ferrous alloy according to claim 1 containing 11.5% of chromium 1% of carbon 4% of molybdenum and 6% of copper.
- a sintered ferrous alloy" a'ccording to claim 4 wherein the iron and chromium have been introduced in the form of a pre-alloy of 87% iron and 13% chromium.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2565470 | 1970-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3694173A true US3694173A (en) | 1972-09-26 |
Family
ID=10231185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US147706A Expired - Lifetime US3694173A (en) | 1970-05-28 | 1971-05-27 | Ferrous alloys |
Country Status (7)
Country | Link |
---|---|
US (1) | US3694173A (ja) |
JP (1) | JPS5126881B1 (ja) |
DE (1) | DE2125534C3 (ja) |
ES (1) | ES391619A1 (ja) |
FR (1) | FR2093877A5 (ja) |
GB (1) | GB1339132A (ja) |
ZA (1) | ZA713326B (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3790352A (en) * | 1971-06-28 | 1974-02-05 | I Niimi | Sintered alloy having wear resistance at high temperature |
US4268309A (en) * | 1978-06-23 | 1981-05-19 | Toyota Jidosha Kogyo Kabushiki Kaisha | Wear-resisting sintered alloy |
US4363662A (en) * | 1979-05-17 | 1982-12-14 | Nippon Piston Ring Co., Ltd. | Abrasion resistant ferro-based sintered alloy |
US4767456A (en) * | 1986-03-04 | 1988-08-30 | Mrc Bearings Incorporated | Corrosion and wear resistant metal alloy having high hot hardness and toughness |
US6138351A (en) * | 1995-03-13 | 2000-10-31 | Yamaha Hatsudoki Kabushiki Kaisha | Method of making a valve seat |
WO2002059388A1 (en) * | 2001-01-24 | 2002-08-01 | Federal-Mogul Sintered Products Ltd | Sintered ferrous material containing copper |
US6436338B1 (en) | 1999-06-04 | 2002-08-20 | L. E. Jones Company | Iron-based alloy for internal combustion engine valve seat inserts |
US6702905B1 (en) | 2003-01-29 | 2004-03-09 | L. E. Jones Company | Corrosion and wear resistant alloy |
FR2849448A1 (fr) * | 2002-12-25 | 2004-07-02 | Nippon Piston Ring Co Ltd | Corps fritte a base de fer, corps enveloppe d'alliage leger, et leur procede de fabrication |
US20060073064A1 (en) * | 2002-10-23 | 2006-04-06 | Yang Yu | Method of controlling the dimensional change when sintering an iron-based powder mixture |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1598816A (en) * | 1977-07-20 | 1981-09-23 | Brico Eng | Powder metallurgy process and product |
GB9021767D0 (en) * | 1990-10-06 | 1990-11-21 | Brico Eng | Sintered materials |
CN107520451A (zh) * | 2017-08-02 | 2017-12-29 | 宁波瑞丰汽车零部件有限公司 | 一种减震器活塞及其制备工艺 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE590213C (de) * | 1930-01-22 | 1933-12-28 | Boehler & Co Akt Ges Geb | Zieheisen und aehnliche Werkzeuge |
CH275201A (de) * | 1948-07-08 | 1951-05-15 | Plansee Metallwerk | Legierter Sinterstahl. |
-
1970
- 1970-05-28 GB GB2565470A patent/GB1339132A/en not_active Expired
-
1971
- 1971-05-22 DE DE2125534A patent/DE2125534C3/de not_active Expired
- 1971-05-24 ZA ZA713326A patent/ZA713326B/xx unknown
- 1971-05-26 JP JP46036185A patent/JPS5126881B1/ja active Pending
- 1971-05-27 ES ES391619A patent/ES391619A1/es not_active Expired
- 1971-05-27 US US147706A patent/US3694173A/en not_active Expired - Lifetime
- 1971-05-28 FR FR7119549A patent/FR2093877A5/fr not_active Expired
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3790352A (en) * | 1971-06-28 | 1974-02-05 | I Niimi | Sintered alloy having wear resistance at high temperature |
US4268309A (en) * | 1978-06-23 | 1981-05-19 | Toyota Jidosha Kogyo Kabushiki Kaisha | Wear-resisting sintered alloy |
US4363662A (en) * | 1979-05-17 | 1982-12-14 | Nippon Piston Ring Co., Ltd. | Abrasion resistant ferro-based sintered alloy |
US4767456A (en) * | 1986-03-04 | 1988-08-30 | Mrc Bearings Incorporated | Corrosion and wear resistant metal alloy having high hot hardness and toughness |
US6138351A (en) * | 1995-03-13 | 2000-10-31 | Yamaha Hatsudoki Kabushiki Kaisha | Method of making a valve seat |
US6436338B1 (en) | 1999-06-04 | 2002-08-20 | L. E. Jones Company | Iron-based alloy for internal combustion engine valve seat inserts |
GB2386908B (en) * | 2001-01-24 | 2004-09-29 | Federal Mogul Sintered Prod | Sintered ferrous material containing copper |
WO2002059388A1 (en) * | 2001-01-24 | 2002-08-01 | Federal-Mogul Sintered Products Ltd | Sintered ferrous material containing copper |
GB2386908A (en) * | 2001-01-24 | 2003-10-01 | Federal Mogul Sintered Prod | Sintered ferrous material containing copper |
CN1314824C (zh) * | 2001-01-24 | 2007-05-09 | 联邦-蒙古尔烧结产品有限公司 | 含铜的铁质烧结材料 |
US20040112173A1 (en) * | 2001-01-24 | 2004-06-17 | Paritosh Maulik | Sintered ferrous material contaning copper |
US20060073064A1 (en) * | 2002-10-23 | 2006-04-06 | Yang Yu | Method of controlling the dimensional change when sintering an iron-based powder mixture |
CN100362125C (zh) * | 2002-10-23 | 2008-01-16 | 霍加纳斯股份有限公司 | 烧结铁基粉末混合物时控制尺寸变化的方法 |
US7329380B2 (en) | 2002-10-23 | 2008-02-12 | Höganäs Ab | Method of controlling the dimensional change when sintering an iron-based powder mixture |
FR2849448A1 (fr) * | 2002-12-25 | 2004-07-02 | Nippon Piston Ring Co Ltd | Corps fritte a base de fer, corps enveloppe d'alliage leger, et leur procede de fabrication |
US6702905B1 (en) | 2003-01-29 | 2004-03-09 | L. E. Jones Company | Corrosion and wear resistant alloy |
Also Published As
Publication number | Publication date |
---|---|
DE2125534A1 (de) | 1971-12-09 |
GB1339132A (en) | 1973-11-28 |
DE2125534B2 (de) | 1981-06-04 |
ZA713326B (en) | 1972-01-26 |
DE2125534C3 (de) | 1982-02-25 |
ES391619A1 (es) | 1973-07-01 |
JPS5126881B1 (ja) | 1976-08-09 |
FR2093877A5 (ja) | 1972-01-28 |
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