公开(公告)号：US06537395B2

公开(公告)日：2003-03-25

申请号：US09888847

申请日：2001-07-20

申请人： Sundaresa V. Subramanian

发明人： Sundaresa V. Subramanian

IPC分类号： C22C3304

CPC分类号： C22C37/10 ,  C21C1/08 ,  C22C33/08

摘要： Processes for producing gray cast iron and the resulting gray cast iron exhibiting consistently good surface finish with prolonged tool life during finish machining with cubic boron nitride and silicon nitride cutting tools at high cutting speeds and low feed rates are provided comprising (1) adding microalloying elements with strong affinity for nitrogen to a gray iron melt; (2) adding microalloying elements with strong affinity for carbon to said melt; and (3) adding microalloying elements with strong affinity for oxygen to said melt, to form a chemically stable, high melting or refractory oxide protective layer at the cutting edge of the tool during metal cutting, thereby suppressing chemical wear.

摘要翻译： 提供了用于生产灰口铸铁的方法和所得到的灰铸铁，其表现出一致的良好的表面光洁度，并且在高切割速度和低进给速率下用立方氮化硼和氮化硅切割工具在精加工期间具有延长的刀具寿命，包括（1）添加微合金元素 对氮气具有很强的亲和力，使其成为灰色铁熔体; （2）向所述熔体中加入对碳的强亲合力的微合金元素; 和（3）向所述熔体添加对氧的强亲合力的微合金元素，在金属切割期间在工具的切割边缘处形成化学稳定的高熔点或难熔氧化物保护层，从而抑制化学磨损。

公开(公告)号：US06451087B2

公开(公告)日：2002-09-17

申请号：US09852634

申请日：2001-05-11

申请人： Yoshio Bizen ,  Setsuo Mishima ,  Takashi Meguro

发明人： Yoshio Bizen ,  Setsuo Mishima ,  Takashi Meguro

IPC分类号： C22C3304

CPC分类号： C22C1/03 ,  C22C33/003 ,  C22C45/02

摘要： The method for producing a mother alloy for an iron-based amorphous alloy has the steps of (a) melting raw materials for elements constituting the amorphous alloy together with at least one oxide of an element constituting the amorphous alloy, the raw materials containing aluminum as an inevitable impurity, and the oxide having a smaller standard free energy of formation than that of Al2O3 in an absolute value; and (b) removing the resultant Al2O3 from the melt, thereby reducing the content of aluminum to 50 ppm or less in the melt.

摘要翻译： 制造铁基非晶合金母合金的方法具有以下步骤：（a）将构成非晶合金的元素的原料与至少一种构成非晶态合金的元素的氧化物一起熔化，将含铝的原料作为 不可避免的杂质，氧化物的绝对值比Al2O3的标准自由能更小; 和（b）从熔体中除去所得的Al 2 O 3，从而在熔体中将铝的含量降低到50ppm以下。

公开(公告)号：US06355089B2

公开(公告)日：2002-03-12

申请号：US09760855

申请日：2001-01-17

申请人： Philippe Damie ,  Christian Turrel

发明人： Philippe Damie ,  Christian Turrel

IPC分类号： C22C3304

CPC分类号： C22C38/00 ,  C22B7/00 ,  Y02P10/212 ,  Y10T428/12431

摘要： A carbon or low-alloy steel is provided with improved machinability. The carbon content of the steel is less than 1.5% and the sum of the alloy elements contained therein is less than 9%. The steel contains oxide and sulfide inclusions, and the chemical composition of the steel includes 0.1%≦Mn, 0.01%≦Al≦0.05%, 0.025%≦S≦0.3%, 0.002%≦Ca, O≦0.0015% by weight; the “KO oxides” cleanness index is less than 30, all the oxides are lime aluminates, and the average calcium content of type 2, type 3, type 4 and type 5 inclusions is less than 30%. A process of manufacturing such steel and an oxide-core wire for its manufacture are also provided.

摘要翻译： 碳或低合金钢具有改善的机械加工性。 钢的碳含量小于1.5％，其中含有的合金元素的总和小于9％。 该钢含有氧化物和硫化物夹杂物，钢的化学组成包括0.1％<= Mn，0.01％<= Al <= 0.05％，0.025％<= S <= 0.3％，0.002％<= Ca， = 0.0015重量％ “KO氧化物”的清洁指数小于30，所有的氧化物均为石灰铝酸盐，2型，3型，4型和5型夹杂物的平​​均钙含量小于30％。 还提供了制造这种钢和用于其制造的氧化物芯线的方法。