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公开(公告)号：US11433493B2
公开(公告)日：2022-09-06
申请号：US15779786
申请日：2016-12-01
申请人： Bharat Forge Limited , Babasaheb Neelkanth Kalyani , Madan Umakant Takale , Vijaykumar Hanumantrao Khasnis , Amol Raghunathrao Deshmukh
发明人： Babasaheb Neelkanth Kalyani , Madan Umakant Takale , Vijaykumar Hanumantrao Khasnis , Amol Raghunathrao Deshmukh
IPC分类号： B21K1/26 , B23P15/50 , C21D9/00 , F04B53/00 , F04B53/16 , F16L41/02 , F04B1/053 , F04B27/053 , F04B39/12 , B23P15/00 , C21D7/13 , B21J5/02
摘要： The present invention discloses a Fluid End and its manufacturing method. The conventional fluid end manufacturing methods involve machining of all surfaces. This demands more input stock for manufacturing process and a lot of material wastage during machining process. In the conventional processes involving open die forging followed by machining result into only about 34% utilization of material. In the present invention, fluid end component geometry is optimized. Assembly surfaces are machined whereas other or non-assembly surfaces are as-forged condition. The method of invention also results in significant reduction in machining time and chip removal. The present invention also discloses a process of manufacturing using a combination of open die and closed die forging, and machining. It involves the steps of cogging an ingot to form billet for closed die forging using open die forging, forging the billet in closed die using forging equipment, semi-finish/rough/partial machining, heat treatment, drilling and finish machining the component. Most of the non-assembly areas of the fluid end are left in as-forged condition.
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公开(公告)号：US20180354081A1
公开(公告)日：2018-12-13
申请号：US15779786
申请日：2016-12-01
申请人： Babasaheb Neelkanth KALYANI , Madan Umakant TAKALE , Vijaykumar Hanumantrao KHASNIS , Amol Raghunathrao DESHMUKH , Bharat Forge Limited
发明人： Babasaheb Neelkanth Kalyani , Madan Umakant Takale , Vijaykumar Hanumantrao Khasnis , Amol Raghunathrao Deshmukh
CPC分类号： B23P15/50 , B21K1/26 , B23P15/00 , C21D7/13 , C21D9/0081 , C21D2221/00 , C21D2261/00 , F04B1/053 , F04B27/053 , F04B39/121 , F04B39/123 , F04B39/125 , F04B53/007 , F04B53/16 , F16L41/021
摘要： The present invention discloses a Fluid End and its manufacturing method. The conventional fluid end manufacturing methods involve machining of all surfaces.This demands more input stock for manufacturing process and a lot of material wastage during machining process. In the conventional processes involving open die forging followed by machining result into only about 34% utilization of material. In the present invention, fluid end component geometry is optimized. Assembly surfaces are machined whereas other or non-assembly surfaces are as-forged condition. The method of invention also results in significant reduction in machining time and chip removal. The present invention also discloses a process of manufacturing using a combination of open die and closed die forging, and machining. It involves the steps of cogging an ingot to form billet for closed die forging using open die forging, forging the billet in closed die using forging equipment, semi-finish/rough/partial machining, heat treatment, drilling and finish machining the component. Most of the non-assembly areas of the fluid end are left in as-forged condition.
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公开(公告)号：US20170369976A1
公开(公告)日：2017-12-28
申请号：US15520849
申请日：2015-10-21
申请人： Babasaheb Neelkanth KALYANI , Madan Umakant TAKALE , Prakasam Balachandran GNANA , Rajkumar Prasad SINGH , Abhay Ramchandra CHAUTHAI , Suresh Babu ARANGI , Rajesh Surendra MANE , Kumar DHARMESH , Srinivas PERLA , Vinayak Pralhad PAWAR , Shital Shahaji JADHAV , BHARAT FORGE LIMITED , KALYANI CARPENTER SPECIAL STEELS LIMITED
发明人： Babasaheb Neelkanth Kalyani , Madan Umakant Takale , Prakasam Balachandran Gnana , Rajkumar Prasad Singh , Abhay Ramchandra Chauthai , Suresh Babu Arangi , Rajesh Surendra Mane , Dharmesh Kumar , Srinivas Perla , Vinayak Pralhad Pawar , Shital Shahaji Jadhav
CPC分类号： C22C38/28 , C21D1/30 , C21D7/13 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C21D2211/002 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/26
摘要： The present invention disclosed an ultra-high strength steel for structural components, a process of making such steel that has a desirable microstructure in the thermo-mechanically processed and differently cooled conditions that delivers high fatigue performance in service, and a process of making forged components using such steel. The steel and the process of its manufacturing enables manufacture of components that exhibit bainitic microstructure that impart ultra-high strength ranges with very high fatigue performance. The invention enables saving in alloying additives compared to hardened and tempered alloy steels and in addition avoid expensive heat treatment operations to achieve the desired range of mechanical properties. The steel of the invention is a suitable replacement for micro alloyed steel or heat treated steel bars used for structural component development. The steel can be used for applied as the hot rolled and air cooled long products that can be directly used for applications or it can be directly hot forged in open or closed die forging followed by controlled cooling to achieve the desired microstructure and range of mechanical properties.
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公开(公告)号：US10576529B2
公开(公告)日：2020-03-03
申请号：US15511150
申请日：2015-08-14
申请人： Bharat Forge Limited , Babasaheb Neelkanth Kalyani , Shreyans Subhash Khot , Madan Umakant Takale , Valmik Vitthal Bhavar , Manoj Rajendra Ukhande
发明人： Babasaheb Neelkanth Kalyani , Shreyans Subhash Khot , Madan Umakant Takale , Valmik Vitthal Bhavar , Manoj Rajendra Ukhande
摘要： The invention discloses a process of manufacturing heavy and critical components such as a blowout preventer (BOP) with a combination of open die forging, piercing and machining process which results in to better material utilization and saving in the machining time. The forging process of the invention involves a step of notching, wherein a transverse notch is made near each end of the ingot before cogging said ingot. The invention allows development of safety and critical components with effective material utilisation.
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公开(公告)号：US09446445B2
公开(公告)日：2016-09-20
申请号：US14369206
申请日：2012-12-27
IPC分类号： B21J5/08 , B21K1/06 , B21J5/00 , B21J5/10 , B21C1/00 , C21D8/10 , C22F1/10 , C22F1/18 , F03D11/02
CPC分类号： B21K1/063 , B21C1/00 , B21J5/002 , B21J5/08 , B21J5/10 , C21D8/105 , C22F1/10 , C22F1/183 , F03D15/00 , Y10T428/12292
摘要： The present invention describes a method of manufacturing a near-net shaped hollow shaft useful for high power applications such as gearboxes for wind energy industry. The method involves providing a concast bloom (of a round or rectangular or of any polygonal cross section) or an as-cast round ingot from which a hollow perform is prepared using hollow die punching, followed by process of heat treatment, proof-machining and stress relieving.
摘要翻译： 本发明描述了一种制造用于大功率应用的近净形空心轴的方法，例如用于风能工业的齿轮箱。 该方法包括提供圆形或矩形或任何多边形横截面的圆锥形花岗岩或铸造圆形铸锭，使用中空模具冲孔从中制备空心铸件，随后进行热处理，防腐加工和 减轻压力
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6.发明申请Process to Improve Fatigue Strength of Micro Alloy Steels, Forged Parts Made From the Process and an Apparatus to Execute the Process. 审中-公开提高微合金钢，锻造件制造过程中的疲劳强度的过程和执行工艺的设备。公开(公告)号：US20140261921A1
公开(公告)日：2014-09-18
申请号：US14350082
申请日：2012-10-03
IPC分类号： C21D1/18
CPC分类号： C21D1/18 , C21D1/02 , C21D1/42 , C21D7/13 , C21D9/30 , C21D2211/001 , F16C3/06 , Y02P10/253
摘要： The present invention describes a process to make enhanced fatigue strength micro-alloy steel. In the process of the present invention, the soaking temperature is maintained in the range of 900° C. to 1050° C. and soaking time in the range of 30-60 minutes depending on size of crankshaft to get refined grain size. Distortion of the components is prevented from occurring with provision of adequate supports especially designed for the process. Forged parts made using the process, such as crankshafts, have a refined grain pattern and result into 20 to 25% enhancement in torsion fatigue strength & 10-25% enhancement in bending fatigue strength. The present invention thus provides an enhanced ratio of the strength to material density and a micro-alloy whose torsion fatigue strength and bending fatigue strength are greater than the currently available micro-alloy steels.
摘要翻译： 本发明描述了一种制造增强的疲劳强度微合金钢的方法。 在本发明的方法中，根据曲轴的尺寸，均热温度保持在900℃至1050℃的范围内，并且浸泡时间在30-60分钟的范围内以获得精制的晶粒尺寸。 通过提供特别设计用于该过程的足够支撑，防止部件发生变形。 使用这种工艺制造的锻造零件，如曲轴，具有精细的纹理，并且扭转疲劳强度增加20％至25％，弯曲疲劳强度提高10-25％。 因此，本发明提供了强度与材料密度的增加率以及扭转疲劳强度和弯曲疲劳强度大于目前可获得的微合金钢的微合金。
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公开(公告)号：US09616486B2
公开(公告)日：2017-04-11
申请号：US14350083
申请日：2012-10-03
IPC分类号： B21J5/00 , B21J5/02 , B21J9/02 , B21J5/08 , B21J1/02 , B21J1/04 , B21K5/02 , C21D7/13 , C21D9/00 , C21D1/28
CPC分类号： B21J5/002 , B21J1/02 , B21J1/04 , B21J5/022 , B21J5/025 , B21J5/08 , B21J9/022 , B21K5/02 , C21D1/28 , C21D7/13 , C21D9/0081
摘要： The present invention discloses a process of manufacturing forged components using a combination of open die and closed die forging, and machining. The process involves the steps of cogging of the ingot, upsetting the cogged bloom in two steps to form a preform, closed forging the preform on a hammer, rough machining, heat treatment, semi-finishing, and finally finishing the component. The present invention is applicable to any forged components that are used in variety of industries, particularly those which are formed from large ingots. The invention is particularly useful for safety- and application-critical components such as a fluid end which is used in oil and gas industry. With the process of the present invention, 55 to 60% of the shape and size of the final component is achieved through forging and remaining 40 to 45% through machining. Incorporating the closed die forging stage in between open die forging and machining stages of the results in about 27% material reduction and over 60% reduction in machining time.
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公开(公告)号：US20140238099A1
公开(公告)日：2014-08-28
申请号：US14350083
申请日：2012-10-03
CPC分类号： B21J5/002 , B21J1/02 , B21J1/04 , B21J5/022 , B21J5/025 , B21J5/08 , B21J9/022 , B21K5/02 , C21D1/28 , C21D7/13 , C21D9/0081
摘要： The present invention discloses a process of manufacturing forged components using a combination of open die and closed die forging, and machining. The process involves the steps of togging of the ingot, upsetting the cogged bloom in two steps to form a preform, closed forging the preform on a hammer, rough machining, heat treatment, semi-finishing, and finally finishing the component. The present invention is applicable to any forged components that are used in variety of industries, particularly those which are formed from large ingots. The invention is particularly useful for safety- and application-critical components such as a fluid end which is used in oil and gas industry. With the process of the present invention, 55 to 60% of the shape and size of the final component is achieved through forging and remaining 40 to 45% through machining. Incorporating the closed die forging stage in between open die forging and machining stages of the results in about 27% material reduction and over 60% reduction in machining time.
摘要翻译： 本发明公开了使用开模和封闭模锻以及机加工的组合制造锻造部件的方法。 该方法包括以下两个步骤：铸锭，镦锻楔形花纹两步，以形成预成型件，将预制件封闭在锤上锻造，粗加工，热处理，半精加工，最后完成组件。 本发明可应用于各种工业中使用的任何锻造部件，特别是由大锭形成的锻造部件。 本发明特别适用于安全和应用关键部件，例如在石油和天然气工业中使用的流体端。 通过本发明的方法，最终部件的形状和尺寸的55-60％通过锻造实现，并且通过机械加工保持40至45％。 将闭模锻造阶段结合在开模锻造和加工阶段之间，结果是约27％的材料减少和超过60％的加工时间缩短。
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公开(公告)号：US09752203B2
公开(公告)日：2017-09-05
申请号：US14350082
申请日：2012-10-03
CPC分类号： C21D1/18 , C21D1/02 , C21D1/42 , C21D7/13 , C21D9/30 , C21D2211/001 , F16C3/06 , Y02P10/253
摘要： The present invention describes a process to make enhanced fatigue strength micro-alloy steel. In the process of the present invention, the soaking temperature is maintained in the range of 900° C. to 1050° C. and soaking time in the range of 30-60 minutes depending on size of crankshaft to get refined grain size. Distortion of the components is prevented from occurring with provision of adequate supports especially designed for the process. Forged parts made using the process, such as crankshafts, have a refined grain pattern and result into 20 to 25% enhancement in torsion fatigue strength & 10-25% enhancement in bending fatigue strength. The present invention thus provides an enhanced ratio of the strength to material density and a micro-alloy whose torsion fatigue strength and bending fatigue strength are greater than the currently available micro-alloy steels.
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公开(公告)号：US20150050513A1
公开(公告)日：2015-02-19
申请号：US14369206
申请日：2012-12-27
CPC分类号： B21K1/063 , B21C1/00 , B21J5/002 , B21J5/08 , B21J5/10 , C21D8/105 , C22F1/10 , C22F1/183 , F03D15/00 , Y10T428/12292
摘要： The present invention describes a method of manufacturing a near-net shaped hollow shaft useful for high power applications such as gearboxes for wind energy industry. The method involves providing a concast bloom (of a round or rectangular or of any polygonal cross section) or an as-cast round ingot from which a hollow perform is prepared using hollow die punching, followed by process of heat treatment, proof-machining and stress relieving.
摘要翻译： 本发明描述了一种制造用于大功率应用的近净形空心轴的方法，例如用于风能工业的齿轮箱。 该方法包括提供圆形或矩形或任何多边形横截面的圆锥形花岗岩或铸造圆形铸锭，使用中空模具冲孔从中制备空心铸件，随后进行热处理，防腐加工和 减轻压力
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