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公开(公告)号：US3922038A
公开(公告)日：1975-11-25
申请号：US38756673
申请日：1973-08-10
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R
CPC classification number: E21B10/22 , C23C8/00 , Y10T428/12958
Abstract: Disclosed herein are treatments for the manufacture of wear resistant steel surfaces, which are carburized, boronized, quenched and tempered for extreme surface hardness, with a strong, tough supporting base that minimizes fracturing of the brittle boronized case.
Abstract translation: 本文公开了用于制造耐磨钢表面的处理，该表面经过渗碳，硼化，淬火和回火以获得极高的表面硬度，具有坚固，坚韧的支撑基底，使脆性硼化壳体的断裂最小化。
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公开(公告)号：US3260579A
公开(公告)日：1966-07-12
申请号：US17315362
申请日：1962-02-14
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R , WISLER ALLEN E
IPC: E21B10/50
CPC classification number: E21B10/50 , Y10S428/932 , Y10T428/1209 , Y10T428/12931
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公开(公告)号：US3913988A
公开(公告)日：1975-10-21
申请号：US52711074
申请日：1974-11-25
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R , PRINCE RICHARD B
CPC classification number: E21B10/24 , F16C33/14 , F16C2223/12 , F16C2352/00
Abstract: Disclosed herein are bearings and methods of treatment especially suitable for friction or plain bearings in earth boring drill bits. The surface of such a bearing is carburized and heat treated to produce extremely high surface carbon such that free carbides occur at the surface. The steel bearings disclosed have a surface carbon content after treatment higher than 0.9% (by weight) to achieve the free carbides. The method for producing the desired high surface carbon in the bearing involves the initial step of heating the bearing in a gas carburizing furnace containing an atmosphere with a high carbon potential. Then the bearing is quenched directly from a high carbon potential atmosphere. Alternatively the bearing may be carburized by the ''''pack'''' carburizing method and subsequently using a copper plating or equivalent during hardening to prevent loss of the high surface carbon. In either instance the high carbon surface performs better if treated with a sacrificial, solid lubricant of soft metal or a metallic compound that breaks in the surface during initial operation.
Abstract translation: 本文公开了特别适用于钻孔钻头中的摩擦或滑动轴承的轴承和处理方法。 这种轴承的表面被渗碳和热处理以产生极高的表面碳，使得在表面出现游离的碳化物。 所公开的钢轴承的处理后的表面碳含量高于0.9％（重量）以实现游离碳化物。 在轴承中生产所需高表面碳的方法包括在含有高碳电势的气氛的气体渗碳炉中加热轴承的初始步骤。 然后直接从高碳气氛中淬火轴承。 或者，可以通过“包装”渗碳方法渗碳轴承，随后在硬化期间使用镀铜或等效物以防止高表面碳的损失。 在任一情况下，如果在初始操作期间用牺牲的软质金属固体润滑剂或在表面破裂的金属化合物处理，则高碳表面的性能将更好。
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公开(公告)号：US3158214A
公开(公告)日：1964-11-24
申请号：US17985762
申请日：1962-03-15
Applicant: HUGHES TOOL CO
Inventor： WISLER ALLEN E , SCALES STANLEY R
IPC: E21B10/50
CPC classification number: E21B10/50
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公开(公告)号：DE2814045A1
公开(公告)日：1978-11-30
申请号：DE2814045
申请日：1978-03-31
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R
IPC: C09D5/00 , C09D167/08 , C21D1/72 , C23C8/04 , C23C9/04
Abstract: Disclosed herein is a method of selectively boronizing of the surface of ferrous metal that is characterized by applying to such area as is not to be boronized a coating consisting essentially of finely divided titanium dioxide, finely divided carbonaceous material and an anhydrous binding agent in effective amounts to form a boronizing resist having boronizing resistance during boronizing, then boronizing the ferrous metals at a temperature at which the coating forms the boronizing resist and subsequently removing the boronizing resist. Also disclosed are compositions for preferred applications of the coating and additional details on preferred embodiments.
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Patent Agency Ranking
公开(公告)号：CA1105783A
公开(公告)日：1981-07-28
申请号：CA298932
申请日：1978-03-14
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R
IPC: C09D5/00 , C09D167/08 , C21D1/72 , C23C8/04 , C23C9/04
Abstract: Disclosed herein is a method of selectively boronizing of the surface of ferrous metal that is characterized by applying to such area as is not to be boronized a coating consisting essentially of finely divided titanium dioxide, finely divided carbonaceous material and an anhydrous binding agent in effective amounts to form a boronizing resist having boronizing resistance during boronizing, then boronizing the ferrous metals at a temperature at which the coating forms the boronizing resist and subsequently removing the boronizing resist. Also disclosed are compositions for preferred applications of the coating and additional details on preferred embodiments.
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公开(公告)号：CA1238895A
公开(公告)日：1988-07-05
申请号：CA491355
申请日：1985-09-23
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R , SHOTWELL DUANE E , ATKINSON GERALD O
Abstract: An earth boring bit having an improved two piece bearing construction using an internally tapered and threaded, cantilevered bearing lug extending obliquely inwardly and downwardly from a leg carried by the body of the bit. An internally tapered and threaded bearing sleeve is made up on the lug, and includes a mouth that engages a shoulder on a base region of the bearing lug. The mouth of the sleeve has a minimum radial thickness such that the sleeve may be made up to a selected minimum torque. The bearing sleeve has a length greater than that of the treaded portion to define a thick walled inner end region to receive a resilient retainer ring in a groove that provides a minimum section over the threads on the the interior of the sleeve. The sleeve is boronized to achieve wear resistance in a manner that does not substantially reduce strength.
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公开(公告)号：CA1118847A
公开(公告)日：1982-02-23
申请号：CA331625
申请日：1979-07-11
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R , SULLIVAN ERIC C
Abstract: An improved method for hardfacing tool joints for earth boring drill pipe. Annular bands of hardfacing are applied by an apparatus that creates an arc between a consumable steel wire and the tool joint. The steel wire is reciprocated across the width of the band as the tool joint is rotated. Granules of tungsten carbide flow by gravity from a hopper into the weld puddle. The flow of granules into the puddle is stopped just prior to reaching the tie-in point. The arc continues a short distance, creating an overlapping protuberance at the tie in that is free of granules at the surface. This protuberance can be easily ground smooth with the remainder of the hardfacing.
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公开(公告)号：CA754424A
公开(公告)日：1967-03-14
申请号：CA754424D
Applicant: HUGHES TOOL CO
Inventor： WISLER ALLEN E , SCALES STANLEY R
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