公开(公告)号：US4911763A

公开(公告)日：1990-03-27

申请号：US219456

申请日：1988-07-15

申请人： Jean C. Farge ,  Michel Lefebvre ,  Robert Fortin

发明人： Jean C. Farge ,  Michel Lefebvre ,  Robert Fortin

IPC分类号： C21D1/60 ,  C21D5/04

CPC分类号： C21D1/60 ,  C21D5/04

摘要： A process for producing a low alloy white cast iron is disclosed. The process comprises the steps of selecting one of a group of four alloying elements for a nickel, molybdenum/copper or modified low alloy iron; the four alloying groups consisting essentially, by weight percent of about:Group 1: 2.5 to 4.0% carbon; 0.3 to 0.8% silicon; 0.3 to 0.8% manganese; 0.75 to 2.0% nickel; 0 to 0.75% chromium.Group 2: 3.0 to 4.5% carbon; 0.3 to 0.8% silicon; 0.3 to 1.0% manganese; 0 to 0.8% molybdenum; and 0.3 to 1.0% copper.Group 3: 3.0 to 4.5% carbon; 0.3 to 0.8% silicon; 0.3 to 1.0% manganese; and 0.3 to 0.8% copper;the balance being iron except for incidental impurities commonly found in cast irons; melting the alloy; casting such alloy into moulds to produce the desired product; removing the product from the moulds while its surface temperature is above the transformation temperature of the alloy; and cooling it by quenching into a liquid medium containing water and an organic polymer at a sufficiently high rate to prevent the formation of pearlite but not so high as to generate cracks in the product.

摘要翻译： 公开了一种生产低合金白口铸铁的方法。 该方法包括以下步骤：选择一组用于镍，钼/铜或改性低合金铁的四种合金元素中的一种; 四种合金组成基本上由重量百分数约1：2.5至4.0％的碳组成; 0.3〜0.8％硅; 0.3〜0.8％锰; 0.75〜2.0％的镍; 0〜0.75％铬。 组2：3.0〜4.5％的碳; 0.3〜0.8％硅; 0.3〜1.0％锰; 0〜0.8％钼; 和0.3〜1.0％的铜。 组3：3.0〜4.5％的碳; 0.3〜0.8％硅; 0.3〜1.0％锰; 和0.3〜0.8％的铜; 余量为铁，除了通常在铸铁中发现的杂质; 熔化合金; 将这种合金铸造成模具以产生所需的产品; 当其表面温度高于合金的转变温度时，从模具中取出产品; 并通过以足够高的速率骤冷到含有水和有机聚合物的液体介质中来冷却，以防止珠光体的形成，而不会产生产物中的裂纹。

公开(公告)号：US5034069A

公开(公告)日：1991-07-23

申请号：US461994

申请日：1990-01-08

申请人： Jean C. Farge ,  Michel Lefebvre ,  Robert Fortin

发明人： Jean C. Farge ,  Michel Lefebvre ,  Robert Fortin

IPC分类号： C21D1/60 ,  C21D5/04

CPC分类号： C21D1/60 ,  C21D5/04

摘要： A process for producing a low alloy white cast iron is disclosed. The process comprises the steps of selecting one of a group of four alloying elements for a nickel, molybdenum/copper or modified low alloy iron; the four alloying groups consisting essentially, by weight percent of about:Group 1: 2.5 to 4.0% carbon; 0.3 to 0.8% silicon; 0.3 to 0.8% manganese; 0.75 to 2.0% nickel; 0 to 0.75% chromium.Group 2: 3.0 to 4.5% carbon; 0.3 to 0.8% silicon; 0.3 to 1.0% manganese; 0 to 0.8% molybdenum; and 0.3 to 1.0% copper.Group 3: 3.0 to 4.5% carbon; 0.3 to 0.8% silicon; 0.3 to 1.0% manganese; and 0.3 to 0.8% copper; the balance being iron except for incidental impurities commonly found in cast irons; melting the alloy; casting such alloy into moulds to produce the desired product; removing the product from the moulds while its surface temperature is above the transformation temperature of the alloy; and cooling it by quenching into a liquid medium containing water and an organic polymer at a sufficiently high rate to prevent the formation of pearlite but not so high as to generate cracks in the product.

摘要翻译： 公开了一种生产低合金白口铸铁的方法。 该方法包括以下步骤：选择一组用于镍，钼/铜或改性低合金铁的四种合金元素中的一种; 四种合金组成基本上由重量百分数约1：2.5至4.0％的碳组成; 0.3〜0.8％硅; 0.3〜0.8％锰; 0.75〜2.0％的镍; 0〜0.75％铬。 组2：3.0〜4.5％的碳; 0.3〜0.8％硅; 0.3〜1.0％锰; 0〜0.8％钼; 和0.3〜1.0％的铜。 组3：3.0〜4.5％的碳; 0.3〜0.8％硅; 0.3〜1.0％锰; 和0.3〜0.8％的铜; 余量为铁，除了通常在铸铁中发现的杂质; 熔化合金; 将这种合金铸造成模具以产生所需的产品; 当其表面温度高于合金的转变温度时，从模具中取出产品; 并通过以足够高的速率骤冷到含有水和有机聚合物的液体介质中来冷却，以防止珠光体的形成，而不会产生产物中的裂纹。

公开(公告)号：US4338128A

公开(公告)日：1982-07-06

申请号：US138752

申请日：1980-04-09

申请人： Jean C. Farge ,  Robert Fortin

发明人： Jean C. Farge ,  Robert Fortin

IPC分类号： C22C37/00 ,  C22C33/00

CPC分类号： C22C37/00

摘要： A low alloy white cast iron is disclosed. The alloy consists essentially, in weight percent, of about 2.5 to 4% carbon, 0.3 to 0.8% silicon, 0.3 to 1.0% manganese, and 1.7 to 3.5% nickel, the rest being iron except for incidental impurities commonly found in cast iron. The alloy has a microstructure consisting essentially of martensite and carbide and a minimum hardness of 600 B.H.N.

摘要翻译： 公开了低合金白铸铁。 该合金基本上以重量百分比计，约2.5-4％碳，0.3-0.8％硅，0.3-1.0％锰和1.7-3.5％镍，其余为铁，除了通常在铸铁中发现的杂质。 该合金具有主要由马氏体和碳化物组成的微结构，最小硬度为600B.H.N。

公开(公告)号：US4194906A

公开(公告)日：1980-03-25

申请号：US906620

申请日：1978-05-16

申请人： Tibor Krantz ,  Jean C. Farge

发明人： Tibor Krantz ,  Jean C. Farge

IPC分类号： C21D5/04 ,  C22C37/00 ,  C22C37/10

CPC分类号： C21D5/04 ,  C22C37/00

摘要： A low alloy white cast iron has been developed for wear resistance applications. The alloy consists essentially of about 2 to 4% carbon, 0.3 to 1.5% silicon, 0.5 to 1.5% manganese, 0.5 to 1.5% copper and 0.25 to 1% molybdenum, the remainder being substantially iron except for incidental impurities commonly found in cast iron. The preferred alloy composition is 2.5 to 3% carbon, 0.6 to 0.9% silicon, about 1% manganese, about 1% copper and about 0.5% molybdenum, the rest being substantially iron. The process for manufacturing the above wear resistant alloy consists in melting an alloy having the composition mentioned above, casting such alloy into moulds to produce a desired product such as grinding balls or slugs, shaking the product out of the moulds at a temperature of 750.degree. C. or higher, preferably about 900.degree. C. and cooling the product at a rate of 2.degree. to 15.degree. C./sec., preferably 5.degree. to 10.degree. C./sec. The as-cast product is preferably heat treated at a temperature between 200.degree. and 400.degree. C., preferably about 260.degree. C. for a time of 1 to 8 hours, preferably about 4 hours to increase the hardness thereof.

摘要翻译： 低合金白口铸铁已被开发用于耐磨应用。 该合金基本上由约2至4％的碳，0.3至1.5％的硅，0.5至1.5％的锰，0.5至1.5％的铜和0.25至1％的钼组成，其余部分基本上是铁，除了通常存在于铸铁中的偶然杂质 。 优选的合金组成为2.5至3％的碳，0.6至0.9％的硅，约1％的锰，约1％的铜和约0.5％的钼，其余基本上是铁。 制造上述耐磨合金的方法在于熔化具有上述组成的合金，将这种合金铸造成模具，以产生所需的产品如研磨球或块状物，在750℃的温度下将产品从模具中摇动 ℃以上，优选约900℃，以2℃〜15℃/秒，优选5℃〜10℃/秒的速度冷却。 铸造产品优选在200-400℃，优选约260℃的温度下热处理1至8小时，优选约4小时以增加其硬度。