公开(公告)号：US20240410036A1

公开(公告)日：2024-12-12

申请号：US18268705

申请日：2022-09-15

Applicant: SHANGHAI JIAO TONG UNIVERSITY ,  FENGYANG AER SI LIGHT ALLOY PRECISION MOLDING CO. LTD

Inventor： Liming PENG ,  Lingyang YUAN ,  Lei YANG ,  Gang XIAO ,  Chao YANG

IPC: C22C21/02 ,  C22B9/05 ,  C22B9/10 ,  C22C1/02 ,  C22C1/03

Abstract: A high-strength and high-toughness non-heat-treatable die-casting aluminum-silicon alloy and a preparation method therefor are provided. The alloy includes the following components in percentage by weight: 8.0-10.0% of Si, 0.1-0.5% of Mg, 0.5-0.8% of Mn, 0.05-0.5% of Cu, 0.05-0.2% of Ti, 0.01-0.05% of Sr, 0.01-0.1% of V, 0.01-0.15% of RE, less than 0.2% of Fe, less than or equal to 0.4% of other impurities and the balance of Al. Based on modification refinement of eutectic Si by Sr, during preparation, the elements V and RE are imported to further significantly refine eutectic Si structures, so that the alloy obtains features of high strength and high toughness with a high Si content. Under a die-casting condition, the yield strength of the alloy can be 120-160 Mpa, the tensile strength thereof can be 260-320 Mpa and the ductility thereof can be 10-15%.

公开(公告)号：US20240352556A1

公开(公告)日：2024-10-24

申请号：US18683671

申请日：2022-08-29

Applicant: CONSTELLIUM ISSOIRE ,  CONSTELLIUM NEUF-BRISACH ,  CONSTELLIUM MUSCLE SHOALS LLC

Inventor： Anne PICHAT ,  Marc BERTHERAT ,  Alain VASSEL

IPC: C22B21/00 ,  C22B7/00 ,  C22B9/00 ,  C22B9/05 ,  C22B9/16

CPC classification number: C22B21/0092 ,  C22B7/003 ,  C22B9/003 ,  C22B9/006 ,  C22B9/05 ,  C22B9/16 ,  C22B21/0007

Abstract: The invention relates to a method for re-melting coated aluminum alloy scrap comprising a step of supplying shredded coated aluminum alloy scrap, consisting of individual entities; a decoating step, a step of preparing a heel, a step of loading and melting the decoated scrap on the heel. The invention is characterized in that the scrap has a specific geometry wherein at least 50% of the individual entities of the shredded coated scrap has a fold ratio (R) of less than or equal to 0.6, wherein the fold ratio (R) of an individual entity is defined by: fold ratio=R=(unfolded area−folded area)/(unfolded area), wherein the folded area is the maximum area of the orthogonal projection of the individual entity onto a plane and the unfolded area is the total area of the same individual entity after it has been unfolded.

公开(公告)号：US11932920B2

公开(公告)日：2024-03-19

申请号：US17615922

申请日：2020-06-03

Applicant: CONSTELLIUM ISSOIRE

Inventor： Jocelyn Prigent ,  Philippe Jarry ,  Pierre Le Brun

IPC: C22B34/12 ,  C21C7/072 ,  C22B9/05 ,  C22B21/06

CPC classification number: C22B34/1295 ,  C21C7/072 ,  C22B9/05 ,  C22B21/064

Abstract: Liquid metal degassing device comprising a chamber containing a liquid metal bath, a device for circulating a gas through a purification chamber and in that the purification chamber comprises a getter material configured to trap dihydrogen from the circulating gas. Method for degassing a liquid metal bath to reduce the hydrogen concentration of the liquid metal comprising the following steps



a) Preparing a liquid metal bath, preferably an aluminum alloy
b) Circulating a gas,
c) Exchanging hydrogen from the circulating gas with the liquid metal such that the hydrogen dissolved in the liquid metal bath diffuses into the circulating gas and enriches the circulating gas with dihydrogen,
d) Purifying the circulating gas enriched with dihydrogen in a purification chamber comprising a getter material configured to trap dihydrogen from the circulating gas.

公开(公告)号：US11807538B1

公开(公告)日：2023-11-07

申请号：US18140647

申请日：2023-04-28

Applicant: Chengdu University of Technology

Inventor： Dawei Luo ,  Ke Rong ,  Zijie Gao ,  Jiabao Deng

IPC: C01B33/037 ,  C22B9/05 ,  C01B33/02

CPC classification number: C01B33/037 ,  C01B33/02 ,  C22B9/05 ,  C01P2006/80

Abstract: A method for removing phosphorus and boron impurities in an industrial silicon melt by secondary refining is provided. According to the present disclosure, inorganic zinc chloride is adopted as an impurity removal medium and is quickly decomposed into zinc and chloride ions at high temperatures; the phosphorus and boron impurities can react with the zinc and chloride ions to yield low-melting and high-melting compounds during contact with a silicon melt, the low-melting compounds volatilize and escape from the industrial silicon melt at the high temperature of the secondary refining. The high-melting compounds are segregated at the grain boundary along with silicon solidification and removed by crushing and pickling, or sink to the very bottom of the silicon melt and are removed by cutting off a deposition layer at a bottom of a silicon ingot after the silicon melt is solidified.

公开(公告)号：US20220177999A1

公开(公告)日：2022-06-09

申请号：US17436300

申请日：2019-08-20

Applicant: TECHEMET, LP

Inventor： Edward W. Albrecht ,  Steven D McCullough

IPC: C22B9/10 ,  C22B7/04 ,  C22B9/05 ,  C22B9/16 ,  C22B11/02 ,  C22B1/00 ,  C21C5/36 ,  C21C5/44 ,  C21C5/46 ,  C22B11/00 ,  C22B7/00 ,  C22C1/02

Abstract: PGM converting process and jacketed rotary converter. The process can include low- or no-flux converting; partial pre-oxidation of PGM collector alloy; using a refractory protectant in the converter; magnetic separation of slag; recycling part of the slag to the converter; smelting catalyst material in a primary furnace to produce the collector alloy; and/or smelting the converter slag in a secondary furnace with slag from the primary furnace. The converter can include an inclined converter pot mounted for rotation; a refractory lining; an opening in a top of the pot to introduce converter feed; a lance for injecting oxygen-containing gas into the alloy pool; a heat transfer jacket adjacent the refractory lining; and a coolant system to circulate a heat transfer medium through the jacket to remove heat from the alloy pool in thermal communication with the refractory lining.

公开(公告)号：US11268166B2

公开(公告)日：2022-03-08

申请号：US16608470

申请日：2019-01-24

Applicant: Foroni S.p.A.

Inventor： Andrea Foroni ,  Luca Foroni

IPC: B22D1/00 ,  B22D7/00 ,  C21D9/70 ,  C22B9/20 ,  C22B9/04 ,  C22B9/05 ,  C22C1/02 ,  C22C1/10 ,  C22C33/04

Abstract: A method of producing a metal superalloy may include: providing a charge of metal materials; melting the charge of metal materials in an electric-arc furnace to obtain a first melt of the charge of metal materials; performing Argon Oxygen Decarburization (A.O.D.) treatment on the first melt to obtain a decarburized and refined first melt; solidifying the decarburized and refined first melt to obtain first ingots; melting the first ingots in a Vacuum Induction Degassing and Pouring (V.I.D.P.) furnace to obtain a second melt; solidifying the second melt to obtain second ingots; melting the second ingots in a Vacuum Arc Remelting (V.A.R.) furnace to obtain a third melt; and solidifying the third melt to obtain the metal superalloy. The charge of metal materials may have a weight greater than or equal to forty tons and less than or equal to sixty tons.

公开(公告)号：US10513751B2

公开(公告)日：2019-12-24

申请号：US16508615

申请日：2019-07-11

Applicant: Techemet, LP

Inventor： Edward W. Albrecht ,  Steven D. McCullough

IPC: C22B9/05 ,  C22B11/02 ,  C22B7/00 ,  C22B9/10 ,  C22C1/02

Abstract: Integrated PGM converting process. The process includes smelting a catalyst material in a primary furnace, smelting the primary furnace slag in a secondary furnace, converting the collector alloys from the primary and secondary furnaces in a converter to recover PGM enriched alloy and converter slag, separating the recovered converter slag into first and second converter slag portions, and supplying the first converter slag portion to the secondary furnace for smelting with the primary furnace slag. The process can also include low- or no-flux converting; refractory protectant addition; magnetic slag separation; partial feed pre-oxidation; staged slagging; and/or jacketing the converter.

公开(公告)号：US10513750B2

公开(公告)日：2019-12-24

申请号：US16508582

申请日：2019-07-11

Applicant: Techemet, LP

Inventor： Edward W. Albrecht ,  Steven D. McCullough

IPC: C22B9/05 ,  C22B11/02 ,  C22B7/00 ,  C22B9/10 ,  C22C1/02

Abstract: The process includes melting an initial collector alloy charge to start a converter cycle, introducing feed and injecting oxygen into the alloy pool, allowing ferrous slag to collect, terminating feed introduction and oxygen injection to tap the slag, repeating the feed introduction/oxygen injection/slag tapping sequence a plurality of times, and then tapping the alloy to end the cycle. A delay before non-final slag tappings allows any entrained alloy to settle back into the alloy pool, but the final slag tapping is commenced promptly and alloy is optionally entrained. Slag from the final tapping that may contain entrained alloy can be recycled to the converter, e.g., in a subsequent cycle. The process can also include low- or no-flux converting; refractory protectant addition; slag separation; partial feed pre-oxidation; smelting the slag in a secondary furnace with primary furnace slag; and/or jacketing the converter.

公开(公告)号：US20180135150A1

公开(公告)日：2018-05-17

申请号：US15550241

申请日：2016-03-11

Applicant: Brunei University London

Inventor： Zhongyun Fan ,  Shouxun Ji ,  Ian Stone

IPC: C22C3/00 ,  C22C21/00 ,  C22B9/05 ,  B01F7/00

CPC classification number: C22C3/005 ,  B01F7/00816 ,  B01F7/00925 ,  B01F2215/0075 ,  C22B9/05 ,  C22B21/064 ,  C22C21/00 ,  F27D3/16

Abstract: Device and method for melt treatment of aluminium alloys having excessive inclusions, impurities and unwanted gases to be removed, by (a) cooling the melt at an appropriate cooling rate to a temperature below the liquidus by shearing the melt associated with the introduction of at least one type of inert gases into the melt to form fine bubbles and high shear in the melt, and (b) purifying inclusions in the melt by floating them to the top surface, degassing the undesirable gases by reacting with the inert gas, and forming solid intermetallics containing impurity elements and transferring the melt mixture by the shearing device into a holding furnace, and (c) maintaining the melt in the holding furnace at a temperature below the liquidus and above the solidus temperature to settle the solid intermetallics formed by impurity elements as sediment at the bottom of the holding furnace while flowing the melt with much reduced inclusions, impurities and unwanted gases out of the holding furnace as applicable materials. The method is advantageously applicable for upgrading aluminium alloys from recycled and/or scrapped materials.

公开(公告)号：US09766014B2

公开(公告)日：2017-09-19

申请号：US14377039

申请日：2013-02-01

Applicant: VESUVIUS CRUCIBLE COMPANY

Inventor： Bin Yang

IPC: B22D2/00 ,  B22D41/00 ,  B22D1/00 ,  F27D21/00 ,  C22B9/05 ,  C21C5/48 ,  C21C5/44 ,  F27D3/16

CPC classification number: F27D21/00 ,  B22D1/005 ,  B22D2/00 ,  B22D41/00 ,  C21C5/48 ,  C21C2005/448 ,  C22B9/05 ,  F27D3/16 ,  F27D21/0021 ,  F27D2003/161

Abstract: A gas purging plug for blowing gas into a metallurgical vessel, having the form of an elongated body made of a first refractory material, contains a final visual wear indicator in the form of an elongated core extending from an inlet end to a distance, along a central longitudinal axis, less than the length of the elongated body. The final visual wear indicator is made of a second refractory material that differs in visual appearance from the first refractory material between 800 and 1500 degrees C. The plug also contains an intermediate visual wear indicator extending from the inlet end to a point between the end of the final visual wear indicator and the opposite end of the elongated body. The intermediate visual wear indicator is made of a third refractory material that differs in visual appearance from the first and second refractory materials between 800 and 1500 degrees C.