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公开(公告)号：US11987888B2
公开(公告)日：2024-05-21
申请号：US17888926
申请日：2022-08-16
CPC分类号： C23C22/53 , C23C22/34 , C23C2222/10
摘要： An object is to provide a trivalent chromium chemical conversion treatment liquid for a zinc or zinc alloy base capable of forming an environmentally-friendly chemical conversion coating with high corrosion resistance. The present invention provides a hexavalent chromium-free trivalent chromium chemical conversion treatment liquid for zinc or zinc alloy, the liquid comprising trivalent chromium ions, zirconium ions, nitrate ions, and chain colloidal silica, in which the pH of the treatment liquid is 2.5 to 5.0.
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公开(公告)号：US11359288B2
公开(公告)日：2022-06-14
申请号：US16473700
申请日：2017-12-22
发明人： Atsushi Takami , Hidekazu Fukushi
摘要： Provided are a novel chemical conversion treatment agent which is capable of forming, on/over the surface of a metal material, a chemical conversion coating which is superior in corrosion resistance, a method for producing a chemical conversion coating on/over the surface of a metal material with the use of the chemical conversion treatment agent, a metal material having a coating, and a painted metal material.
The problem mentioned above can be solved by the chemical conversion treatment agent for forming a coating on/over the surface of a metal material, which characterized by containing: an ion containging at least one metal selected from the group consisting of titanium, zirconium and hafnium; a fluorine ion; at least one selected from the group consisting of an alkanesulfonic acid, an alkanolsulfonic acid, and ions thereof; and an ion containing trivalent iron.-
3.发明授权公开(公告)号：US11346002B2
公开(公告)日：2022-05-31
申请号：US15534637
申请日：2015-12-15
申请人： Chemetall GmbH
IPC分类号： C23C22/00 , C23C22/34 , C23C22/06 , C23C22/36 , C23C22/05 , C09D183/04 , C09D7/62 , C09D133/02
摘要： The present invention relates to an acidic aqueous composition for coating metallic surfaces, particularly of aluminium materials, that comprises, besides water and optionally further components, a) at least one compound selected from the group consisting of organoalkoxysilanes, organosilanols, polyorganosilanols, organosiloxanes and polyorganosiloxanes, b) at least one compound selected from the group consisting of titanium, zirconium, hafnium and aluminium compounds and silicon complex fluoride, and c) at least one copolymer which is stable at least in a segment of the pH range below 6 and which comprises, in alternating configuration, monomer units containing at least one carboxylic and/or phosphonic acid group and monomer units containing no acid group. The invention further relates to a corresponding coating method and to the use of the substrates coated by this method.
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公开(公告)号：US20210403343A1
公开(公告)日：2021-12-30
申请号：US17466408
申请日：2021-09-03
申请人： ECOLAB USA Inc.
发明人： Daniel M. Williams , Tony Veljan Mackovski , Bruce Tait , Joseph Peter Miknevich , Alex Michael Bogda , Aarthi Narayanan , William A. Von Drasek
IPC分类号： C02F1/00 , C23C22/00 , C02F1/52 , B01D61/02 , B01D61/04 , B01D61/14 , B01D61/16 , C02F1/44 , C02F1/56
摘要： The present disclosure relates to recycling automotive phosphate rinse water. An apparatus and method is disclosed for treating process water containing phosphate. The apparatus may include a process water line. The process water line may be in fluid communication with a sample process water line. The sample process water line may be in fluid communication with a dilution line. The sample process water line, the dilution line, and a phosphate analyzer may be in fluid communication with a diluted process water line. The apparatus may also include a chemical additive feed line in fluid communication with the process water line downstream from the sample process water line.
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公开(公告)号：US11198916B2
公开(公告)日：2021-12-14
申请号：US16648663
申请日：2018-09-25
IPC分类号： C22C38/00 , C22C38/60 , C23C22/00 , C21D8/12 , C21D6/00 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/16
摘要： Further lower iron loss can be achieved in a grain-oriented electrical steel sheet including: a predetermined film mainly composed of forsterite on a front and back surfaces thereof; and a plurality of grooves on the front surface thereof, in which the plurality of grooves have an average depth of 6% or more of a thickness of the steel sheet and are spaced a distance of 1 mm to 15 mm from respective adjacent grooves, the steel sheet has a specific magnetic permeability μr15/50 of 35000 or more when subjected to alternating current magnetization at a frequency of 50 Hz and a maximum magnetic flux density of 1.5 T, and the steel sheet includes isolated parts having a presence frequency of 0.3/μm or less, the isolated parts being separated from a continuous part of the film in an interface between the steel sheet and the film in a cross section orthogonal to the rolling direction of the steel sheet.
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公开(公告)号：US11131027B2
公开(公告)日：2021-09-28
申请号：US15961262
申请日：2018-04-24
申请人： Henkel AG & Co. KGaA
发明人： Donald Vonk , Edis Kapic , Bruce Goodreau , Alvaro Bobadilla
摘要： A pretreatment composition for metal that provides enhanced corrosion resistance, enhanced paint adhesion and reduced chip damage to a wide variety of metal substrates. The pretreatment is also cleaner because it is based on zirconium rather than zinc phosphates. The pretreatment coating composition in use preferably comprises 50 to 300 parts per million (ppm) zirconium, 0 to 100 ppm of SiO2, 150-2000 ppm of total fluorine and 10-100 ppm of free fluorine, 150 to 10000 ppm of zinc and 10 to 10000 ppm of an oxidizing agent and has a pH of 3.0 to 5.0, preferably about 4.0. The coating composition can optionally include 0 to 50 ppm of copper. The suitable oxidizing agents can be selected from a large group.
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公开(公告)号：US11118253B2
公开(公告)日：2021-09-14
申请号：US16167929
申请日：2018-10-23
申请人： Novelis Inc.
发明人： Peter L. Redmond , Theresa Elizabeth MacFarlane , ChangOok Son , Liangliang Li , Amanda Owens , Kevin Mark Johnson
摘要： Described are techniques for treating metals by exposing the metals to reactive solutions to reduce a temperature of the metal and to modify a surface of the metal through chemical reaction, such as by removing material or adding material. The disclosed techniques may advantageously increase the rate at which the temperature of the metal may be reduced as compared to conventional cooling techniques involving pure water, increase metal manufacturing rates, and reduce overall complexity of a metal manufacturing process. The disclosed techniques may also advantageously expand the range of available surface treatments, allow for faster surface treatment processes, and reduce or eliminate the use of hazardous chemicals during a surface treatment process. Such advantages may arise by employing chemical processing that takes place or takes place more efficiently at elevated temperatures.
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公开(公告)号：US10858740B2
公开(公告)日：2020-12-08
申请号：US15761912
申请日：2015-09-24
发明人： Per Möller , Asger Andersen , Sara Eisenhardt , Kasper Bondo Hansen , Martin Kalmar Hansen , Melanie Thyrhaug
摘要： The present disclosure presents a method and a system for modifying a surface of a substrate. The method includes an act of abrasive blasting of a part of the surface of the substrate. In the abrasive blasting, an abrasive media is provided to the part of the surface. The abrasive media is carried to the part by a first carrier. The abrasive media collides with the part of the surface and causes abrasion to the part of the surface. In the method, the first carrier includes steam. The steam of the first carrier heats the part of the surface.
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公开(公告)号：US10759127B2
公开(公告)日：2020-09-01
申请号：US15932512
申请日：2018-03-08
发明人： Martin Thuo , Boyce S. Chang
摘要： A composite material is provided including a polymer matrix and undercooled liquid metallic core-shell particles disposed in the matrix, wherein the particles each have an outer shell and a liquid metallic material as a core contained within the outer shell. The outer shell is frangible such that the liquid metallic material is released from at least some of the particles in response to a mechanical load applied to the composite and solidifies in-situ in the polymer matrix. As a result, the composite material can be self-strengthening and self-healing and can be reconfigurable in shape at ambient temperature.
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公开(公告)号：US10706998B2
公开(公告)日：2020-07-07
申请号：US15550861
申请日：2016-02-15
IPC分类号： H01F1/18 , H01F3/00 , C09D5/03 , C09D5/08 , C09D7/63 , C23C22/07 , C08K3/32 , C08K5/09 , C08K5/11 , B32B7/02 , H01B3/42 , C23C22/74 , C09D7/40 , H01B3/40 , C23C22/00 , H01B3/44 , B32B15/08 , C23C22/22 , B32B15/082 , B32B15/09 , B32B15/092 , C21D8/12 , C22C38/06 , C08K5/053 , C08K5/098 , C08K5/092 , C22C38/00
摘要： An electrical steel sheet has an insulation coating on a steel sheet surface. The insulation coating includes: a binder consisting of 100 parts by mass of a metal phosphate and 1 to 50 parts by mass of an organic resin having an average particle size of 0.05 to 0.50 μm; and a carboxylic acid-containing compound with a carbon number of 2 to 50 in an amount of 0.1 to 10.0 parts by mass based on 100 parts by mass of solids content of the binder. The organic resin is at least one selected from the group consisting of acrylic resins, epoxy resins, and polyester resins. The insulation coating of this electrical steel sheet shows good edge corrosion resistance after blanking.
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