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1. 发明授权

US10100391B2 Process for heat treatment of parts made from low and specified hardenability structural steel 有权
公开(公告)号：US10100391B2
公开(公告)日：2018-10-16
申请号：US13991961
申请日：2011-04-28
申请人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin
发明人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin
IPC分类号： C21D1/06 , C22C38/58 , C21D9/36 , C21D9/46 , C21D9/52 , C21D6/00 , C21D1/18 , C22C38/54 , C22C38/50 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/34 , C22C38/06 , C22C38/04 , C22C38/02
摘要： A size hardening heat treatment process for steel parts of a plate, cylindrical or spherical shape and using low or specified hardenability steel compositions which are through surface heated and very rapidly quenched to produce case hardening of the part. A set of graphs are provided which depict the relationship between the depth of hardening and the dimension of the part for each of a series of critical, i.e., ideal diameter values which allow producing a depth of hardening of a particular part by a proper selection of the DI value of the part. The DI values are calculated by a formula which allows a range of DI values to be created by varying the components of the steel as set out in the formula. The formula also insures a fine grain size to be created by the process to prevent cracking by the very rapid quenching required. A list of elements allowed in the steel but limited by a % mass set out for each component. A particular depth of hardening desired can be produced for a given part of a shape and dimension appearing in the graphs by composing the steel so that the DI is that critical which will produce the desired depth of hardening when the part is heated by through the surface heating and then very rapidly quenched.

2. 发明授权

US09187793B2 Process for making low and specified hardenability structural steel 有权
标题翻译：制造低规格淬火性结构钢的工艺
公开(公告)号：US09187793B2
公开(公告)日：2015-11-17
申请号：US13881434
申请日：2010-12-31
申请人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin , Ignor Semenovich Lerner
发明人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin , Ignor Semenovich Lerner
IPC分类号： C21C7/076 , C21C5/28 , C21C5/52 , C21C5/56 , C22C33/04 , C22C38/04 , C22C38/06 , C22C38/02 , C22C38/42 , C22C38/50 , C21C7/00 , C21C7/06
CPC分类号： C21C7/00 , C21C5/28 , C21C5/5264 , C21C5/562 , C21C7/0006 , C21C7/0075 , C21C7/06 , C21C7/076 , C21C2300/08 , C22C33/04 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/50 , Y02P10/216 , Y02W30/54
摘要： A process for making desired low (LH) hardenability steels in an electric arc or, induction furnace, which is loaded with metal charge consisting of iron, carbon, alloy, scrap with a specified maximum content of manganese, silicon, chrome, nickel and copper, providing for the final content of each of them of not more than 0.1 weight % followed by carburization in a ladle or ladle furnace, the melt then deoxidized in the ladle or ladle furnace with aluminum (1.0-2.3 kg/t), titanium or vanadium in order to achieve the desired low hardenability DI. The invention makes it possible to obtain better mechanical properties and stable hardenability characterized by the particular desired DI.
摘要翻译：一种用于在电弧中制造所需低（LH）淬透性钢的方法或感应炉，其中负载由铁，碳，合金，具有规定的最大含量的锰，硅，铬，镍和铜的铁，提供其中每个的最终含量不超过0.1重量％，然后在钢包或钢包炉中渗碳，然后熔化物在钢包或钢包炉中用铝（1.0-2.3kg / t）脱氧，钛或钒以达到期望的低淬透性DI。本发明使得可以获得更好的机械性能和由特定期望的DI表征的稳定的淬透性。

3. 发明申请

US20150232969A1 Process For Heat Treatment of Parts Made From Low and Specified Hardenability Structural Steel 审中-公开
公开(公告)号：US20150232969A1
公开(公告)日：2015-08-20
申请号：US13991961
申请日：2011-04-28
申请人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin , Ignor Semenovich Lerner
发明人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin , Ignor Semenovich Lerner
IPC分类号： C22C38/58 , C21D9/46 , C21D9/52 , C21D6/00 , C21D1/06 , C21D1/18 , C22C38/54 , C22C38/50 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/34 , C22C38/06 , C22C38/04 , C22C38/02 , C21D9/36
CPC分类号： C21D1/18 , C21D1/06 , C21D2211/002 , C21D2211/009 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/46 , C22C38/50 , C22C38/54
摘要： The invention refers to hardening thermal treatment of the perlite-class steel. The technical result is to obtain a finer austenite grain ##11-13 GOST5639 (ASTM), more stable hardenability level (DI), with a substantially smaller deviation and which strictly corresponds to the depth of the hardened layer obtained directly on parts subjected to thermal treatment, as well as the ability of treating thinner, smaller and other parts with the through-surface and through-thickness hardening. To achieve the technical result, a method for thermal treatment of parts made from low (LH) and specified (SH) hardenability structural steel is proposed for parts shaped as a sphere, cylinder, plate, including through-surface hardening by through-surface heating of the part or its effective cross-section, up to the temperatures of austenitization and cooling with a liquid refrigerant at the rate of more than 40,000 kcal/m2.h.0C., tempering, with hardening of parts made from steel containing the following components, weight %: carbon—.15-1.2, manganese—no more than 1.8, silicon—not more than 1.8, chrome—not more than 1.8, nickel—not more than 1.8, molybdenum—not more than .5, tungsten—not more than 1.5, boron—not more than .007, copper—not more than .9, aluminum—.03-.1, titanium—not more than .4, vanadium—not more than .4, nitrogen—not more than .1, zirconium—not more than .4, calcium—not more than .03, sulphur—not more than .035, phosphorous—not more than .035, iron and unavoidable admixtures—rem., with the ideal diameter determined by the formula: Dkp.=K·{square root over (C)}·(1+4.1·Mn)·(1+0.65·Si)·(1+2,33·Cr)·(1+0.52·Ni)·(1+0.27·Cu)·(1+3.14·Mo)·(1+1.05·W)·[1+1.5(0.9−C)]·(1−0.45C′)·(1−0.3Ti)·(1−0.35V)·(1−0.25 Al) where Der is the ideal diameter (DI), mm K—is the coefficient whose value depends on the actual austenite grain size ##6-13 according to the ASTM scale, GOST5639; C, Mn, Si, Cr, Ni, Cu, Mo, W are the components, weight %, contained in the austenite solid solution at the final heating temperature preceding hardening cooling, [1+1.5(0.9−C.)] is the multiplicand taken into account only if boron is present in steel in the amount of .002-.007 weight %; C′, Ti, V, Al are components, weight %, not contained in the austenite solid solution, but present in the form of structurally-free secondary carbonitride phases at the final heating temperature preceding hardening cooling, C′ is carbon content in the excessive hypereutectoid steel cementite, with surface hardening done through a pre-specified depth the value of which is determined from a graph depending on the sphre cylinder diameter, plate thickness and ideal diameter.

4. 发明申请

US20130213184A1 Process For Making Low and Specified Hardenability Structural Steel 审中-公开
标题翻译：制造低指定硬化性结构钢的方法
公开(公告)号：US20130213184A1
公开(公告)日：2013-08-22
申请号：US13881434
申请日：2010-12-31
申请人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin , Ignor Semenovich Lerner
发明人： Anatoly Alexeevich Kuznetsov , Arkady Moissevich Peker , Alexey Alexandrovich Kupriyanov , Sergey Ivanovich Nikitin , Ignor Semenovich Lerner
IPC分类号： C21C7/00
CPC分类号： C21C7/00 , C21C5/28 , C21C5/5264 , C21C5/562 , C21C7/0006 , C21C7/0075 , C21C7/06 , C21C7/076 , C21C2300/08 , C22C33/04 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/50 , Y02P10/216 , Y02W30/54
摘要： The invention refers to metallurgy, in particular to making low (LH) and specified (SH) hardenability steels in electric arc, induction furnaces or oxygen converters. A metallurgical unit is loaded with metal charge consisting of iron carbon alloy, scrap with a specified content of manganese, silicon, chrome, nickel and copper, providing for the final content of each of them of not more than 0.1 weight %, graphite, slag-forming components, refining of the melt with respect of carbon content prior to heat tapping in a ladle of ladle furnace is done in an electric arc or induction furnace until the carbon content conforms to the corresponding upper tolerance limit or lower than that in the converter followed by carburization in the ladle, slag composition adjustment during the refining and pure rimming periods is done by flushing a portion of slag and recurrent addition of slag-forming materials to the remaining portion of the slag to make sure the content of each of the permanent admixtures in the melt during tapping is not more than 0.1 weight %, then the melt is deoxidized in the ladle or ladle furnace with aluminum (1.0-2.5 kg/t), titanium and vanadium. The invention makes it possible to obtain better mechanical properties and stable hardenability characterized by the ideal diameter (DI): DI of a billet from 6 to 15 mm has a deviation of not more than 2 mm; DI of a billet from 16 to 50 mm has a deviation of not more than 5 mm; DI of a billet from 51 to 100 mm has a deviation of not more than 10 mm; DI of a billet over 100 mm has a deviation of less than 50 mm and better mechanical properties.
摘要翻译：本发明涉及冶金学，特别是在电弧，感应炉或氧气转化器中制备低（LH）和特定（SH）淬透性钢。一个冶金单元装载有由铁碳合金，特定含量的锰，硅，铬，镍和铜的废料组成的金属电荷，其中各自的最终含量不超过0.1重量％，石墨，渣在电铸炉或感应炉中进行在钢包炉的钢包中进行热量攻丝之前相对于碳含量的熔体的精炼，直到碳含量符合相应的上限公差或低于转炉随后在钢包中渗碳，精炼期间的炉渣组成调整和纯化过程是通过将一部分炉渣冲洗并将渣渣形成材料再次添加到炉渣的剩余部分来确保每个永久物的含量在出料时熔体中的混合物不超过0.1重量％，然后在钢包或钢包炉中用铝（1.0-2.5kg / t），钛和钒 adium。本发明可以获得更好的机械性能和以理想直径（DI）为特征的稳定的淬透性：6至15mm的坯料的DI具有不大于2mm的偏差; 16〜50mm的坯料的DI的偏差不大于5mm; 51至100mm的钢坯的DI的偏差不大于10mm; 超过100mm的坯料的DI具有小于50mm的偏差和更好的机械性能。

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