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1. 发明授权

US4123258A Process for the production of steel with increased ductility and for the desulfurization of a steel melt 失效
标题翻译：生产具有延展性和钢熔体脱硫的钢的方法
公开(公告)号：US4123258A
公开(公告)日：1978-10-31
申请号：US825103
申请日：1977-08-16
申请人： Wilhelm Klapdar , Helmut Richter , Heinrich-Wilhelm Rommerswinkel , Edgar Spetzler , Jochen Wendorff
发明人： Wilhelm Klapdar , Helmut Richter , Heinrich-Wilhelm Rommerswinkel , Edgar Spetzler , Jochen Wendorff
IPC分类号： C21C7/00 , C21C7/064 , C21C7/02
CPC分类号： C21C7/064 , C21C7/0037
摘要： A process for the production of steel with increased ductility in which a sulfur-containing steel melt is deoxidized and, if desired, is supplied with alloying elements, the deoxidized melt being treated with magnesium or with both magnesium and calcium as part of a purification action simultaneously reducing the sulfur content, and the reaction is carried out in a casting ladle having a lining free from siliceous oxides. The melt is covered with a synthetic slag free from siliceous oxides and the magnesium-containing substance is introduced in fine-grain particulate form into the melt in a carrier gas at a level at least 2000 mm below the melt surfade and at a rate which is less than the maximum rate at which the magnesium-containing substance is capable of reacting with the melt.
摘要翻译：用于生产具有增加的延性的钢的方法，其中含硫钢熔体被脱氧，并且如果需要，提供合金元素，所述脱氧的熔体用镁或镁和钙两者作为纯化作用的一部分同时降低硫含量，并且在具有不含硅氧化物的衬里的铸造钢包中进行反应。熔体用不含硅氧化物的合成炉渣覆盖，并且含镁物质以细晶粒状形式在载体气体中以至少2000mm低于熔体冲洗表面的水平以一定的速率被引入到熔体中小于含镁物质能够与熔体反应的最大速率。

2. 发明授权

US4067730A Process for the production of steel with increased ductility 失效
标题翻译：具有增加延展性的钢的生产工艺
公开(公告)号：US4067730A
公开(公告)日：1978-01-10
申请号：US742363
申请日：1976-11-11
申请人： Wilhelm Klapdar , Helmut Richter , Heinrich-Wilhelm Rommerswinkel , Edgar Spetzler , Jochen Wendorff
发明人： Wilhelm Klapdar , Helmut Richter , Heinrich-Wilhelm Rommerswinkel , Edgar Spetzler , Jochen Wendorff
IPC分类号： C21C7/00 , C21C7/064 , C21C7/02
CPC分类号： C21C7/064 , C21C7/0037
摘要： A process for the production of steel with increased ductility in which a sulfur-containing steel melt is deoxidized and, if desired, is supplied with alloying elements, the deoxidized melt is treated with calcium as part of a purification action simultaneously reducing the sulfur content and the reaction is carried out in a casting ladle having a lining free from siliceous oxides. The melt is covered with a synthetic slag free from siliceous oxides and the calcium-containing substance is introduced in fine-grain particulate form into the melt in a carrier gas at a level at least 2000 mm below the melt surface and at a rate which is less than the maximum rate at which the calcium-containing substance is capable of reacting with the melt.
摘要翻译：用于生产具有增加的延性的钢的方法，其中含硫钢熔体脱氧，并且如果需要，提供合金元素，所述脱氧的熔体用钙作为纯化作用的一部分同时降低硫含量，该反应在具有不含硅氧化物的衬里的铸造钢包中进行。熔体覆盖有不含硅氧化物的合成炉渣，并且含钙物质以细颗粒形式以载体气体在熔体表面下方至少2000mm的水平以熔体表面的速率被引入熔体中小于含钙物质能够与熔体反应的最大速率。

3. 发明授权

US4036635A Process for making a steel melt for continuous casting 失效
标题翻译：制造连续铸造用钢液的方法
公开(公告)号：US4036635A
公开(公告)日：1977-07-19
申请号：US697225
申请日：1976-06-17
申请人： Wilhelm Klapdar , Helmut Richter , Edgar Spetzler , Jochen Wendorff
发明人： Wilhelm Klapdar , Helmut Richter , Edgar Spetzler , Jochen Wendorff
IPC分类号： B22D11/10 , B22D11/108 , B22D11/11 , B22D11/111 , B22D11/112 , B22D11/116 , B22D27/18 , C21C7/00 , C21C7/06 , C21C7/10
CPC分类号： B22D11/111
摘要： A process for making a steel melt for continuous casting in which the steel melt is formed in a smelting unit under an iron-oxide-containing slag which is held back while the steel melt is tapped and subjected to deoxidation with silicon or aluminum. The sulfur-containing deoxidized melt is then subjected to an aftertreatment with a calcium-containing substance, especially calcium-silicon or calcium carbide in a covered ladle with a silica-free lining after the steel melt is covered with a synthetic slag formed from pulverulent lime and 10 to 30% of a silica-free fluorite and/or alumina fluxing agent which does not release oxygen to the melt. The calcium-containing substance is introduced in an amount which is greater than that required for desulfurization and/or establishing the viscosity of the melt, at a depth of at least 2000 mm and about 300 mm above the bottom of the ladle in a neutral carrier gas (e.g. argon).
摘要翻译：制造用于连续铸造的钢熔体的方法，其中在冶炼单元下形成含铁氧化物渣的冶炼单元，该钢熔体在钢熔体被攻丝并被硅或铝脱氧时被阻止。然后，在用熔融石灰形成的合成炉渣覆盖钢熔体后，将含硫脱氧后的熔体用含有钙的物质，特别是硅 - 硅或碳化钙进行后处理。和10-30％的不向熔体中释放氧气的无二氧化硅的萤石和/或氧化铝助熔剂。所述含钙物质的引入量大于脱硫所需的量和/或建立熔体粘度，在中性载体中在钢包底部至少2000mm和大约300mm的深度气体（如氩气）。

4. 发明授权

US3992195A Process for the production of steel with increased ductility 失效
公开(公告)号：US3992195A
公开(公告)日：1976-11-16
申请号：US569150
申请日：1975-04-18
申请人： Wilhelm Klapdar , Helmut Richter , Heinrich-Wilhelm Rommerswinkel , Edgar Spetzler , Jochen Wendorff
发明人： Wilhelm Klapdar , Helmut Richter , Heinrich-Wilhelm Rommerswinkel , Edgar Spetzler , Jochen Wendorff
IPC分类号： C21C7/04 , C21C7/00 , C21C7/064 , C21C7/02
CPC分类号： C21C7/0037 , C21C7/064
摘要： A process for the production of steel with increased ductility in which a sulfur-containing steel melt is deoxidized and, if desired, is supplied with alloying elements, the deoxidized melt is treated with calcium as part of a purification action simultaneously reducing the sulfur content and the reaction is carried out in a casting ladle having a lining free from siliceous oxides. The melt is covered with a synthetic slag free from siliceous oxides and the calcium-containing substance is introduced in fine-grain particulate form into the melt in a carrier gas at a level at least 2000 mm below the melt surface and at a rate which is less than the maximum rate at which the calcium-containing substance is capable of reacting with the melt.

5. 发明授权

US3980469A Method of desulfurization of a steel melt 失效
标题翻译：钢熔体脱硫方法
公开(公告)号：US3980469A
公开(公告)日：1976-09-14
申请号：US461714
申请日：1974-04-17
申请人： Eckehard Forster , Helmut Richter , Edgar Spetzler , Jochen Wendorff , Wilhelm Klapdar , Heinrich-Wilhelm Rommerswinkel
发明人： Eckehard Forster , Helmut Richter , Edgar Spetzler , Jochen Wendorff , Wilhelm Klapdar , Heinrich-Wilhelm Rommerswinkel
IPC分类号： C21C7/00 , C21C7/10 , C22C33/00
CPC分类号： C21C7/10 , C21C7/0037
摘要： A steel melt is confined and subjected to a partial vacuum. A particulate additive is entrained by a neutral nonreactive carrier gas and introduced into the melt below the surface thereof at a depth such that the additive is immediately vaporized and rises toward the surface of the melt in the form of bubbles which react with components of the melt. With particulate calcium as the additive an injection depth 1500 mm, a temperature of approximately 1500.degree.C, and a vacuum of 20 Torr allows the sulfur content of a steel melt readily to be reduced below 0.005% by weight.
摘要翻译：将钢熔体限制并进行部分真空。颗粒状添加剂被中性非反应性载气夹带，并在其表面下方的熔体中被引入深度，使得添加剂立即蒸发并以与熔体的组分反应的气泡形式朝向熔体的表面上升。使用颗粒状钙作为添加剂，注入深度为1500mm，温度为约1500℃，真空为20托，允许钢熔体的硫含量降低至0.005重量％以下。

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