• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1502114 Extruding at specified temperatures SOC DE VENTE DE L'ALUMINIUM PECHINEY 3 April 1975 [4 April 1974] 13649/75 Headings B3P B3V and B3Q A method of shaping an alloy at a higher than normal forming ratio and/or speed and with reduced tool wear comprises heating the alloy to a temperature between the solidus and liquidus points until less than 40% by weight of the alloy has liquefied, maintaining the temperature for between 5 minutes and 4 hours so that the solid dentritic phase has at least begun to change into a globular form, Fig. 2 (not shown), and working the alloy in this condition. Profiles of various section, bar, wire and tubes may be formed by operations such as drawings, extrusion, rolling, stamping, swaging and forging. The heat treatment permanently modifies the alloy structures so that a billet cooled after the heat treatment may have the improved, "rheotropic" working properties restored merely by heating to the solidus-liquidus range. In an example aluminium alloy billets were heated to 585-605‹ C. for 15 minutes to give a liquid content of 6-13%. The billets were extruded from a container heated to 420- 450‹ C., through a water-cooled die at an exit temperature of 450‹ C. Tests were carried out immediately after extrusion, after ageing for 8 hours at 175‹ C. and following water quenching after 2 hours at 505‹ C. and the above ageing. In numerous other aluminium alloy examples temperatures ranged between 572-625‹ C., times between 15 and 30 minutes and liquid content between 4 and 25%. The work may be cooled with air or water as it issues from a die to solidify substantially all of the liquid fraction.
    公开号:SU722494A3
    申请号:SU752125297
    申请日:1975-04-01
    公开日:1980-03-15
    发明作者:Берковиси Серж
    申请人:Сосьете Де Вант Де Л" Алюминиум Пешиней (Фирма)；
    IPC主号:
    专利说明:

    the state is maintained for 15 min at 585 ° С (ingot A), (ingot B) and (ingot C), which corresponds to the liquid phase 65 (ingot A), 8% (ingot BT and 13% (ingot C ).
    During three consecutive experiments, they were introduced into a container of 800-ton extrusion press heated to 420–450 ° C and immediately extruded at a speed of 8 M / NfHH in profile with a rectangular section of 40 × 3 mm. profile around The ingot manipulation is normal; BfcJ extrusion is satisfactory. From each ingot receive about 15 m of the profile products with a perfect surface.
    The mechanical properties of the samples from the profiles are determined by:
    in the state after extrusion (I); after vacation for 8 h at (P);
    after quenching in water for 2 h after loosening at and subsequent tempering for 8 h at ns ° C (state TB) (III). The results of the experiments are given in the table.
    1 22.5 35.4 22.2 24.1 38.1 24.2 24.8 34.9 23.5 G 31fl 37.1 12.7 .35.4 40.2 1-2.7 33, 3 37.7 12.9
    , y, 4 46,9 14.1
    42.4 47.1. 3.3 43.0 47.6 14.4
    "EXAMPLE 2 AH4SG ingots with a diameter of 100 mm and the same composition as in Example 1 are treated for 15 minutes at 57 so that about 4% of the solid phase is formed. They are extruded to obtain round rods with a diameter of 30 mm (tension bar and 25) at a speed of 3 meters / mi. The joint pressure in the press is 150 bar. In this experiment, carried out according to the classical method of hot extrusion of ingots not treated according to the invention, a pressure of 220 bar is required, i.e., e, by almost 50%; For extruded rods, the following characteristics are obtained: c. ". S in the state after extrusion at 572 - c22.1 37.3 14 Leave 8 hours at 23.8 34.2 12; 1750s State T6 49.8 53.8 10, for a bar extruded by the proposed method, mechanical properties are obtained that are superior in equivalent state properties after classical extrusion to Prime, p 3, Two ingots from the alloy AHSSG (base aluminum; zinc 4.40%; magnesium 1.18%) with a diameter of 100 is subjected to one classical extrusion, the other is processed by the described method (30 min at 620 ° C) to form a 4% liquid phase. When extruding at a speed of 13.2 m / min, a round bar with a diameter of 20 mm is obtained. The required pressure is 155 bar for the raw ingot and 118 bar for the ingot treated according to the invention, i.e. less by 24%. Example 4. Two ingots of AK5SG alloy (the composition is the same as in Example 3) are extruded through a tongue tongue in order to obtain a 25x25 mm square tube section with a thickness of 2 mm; One ingot was untreated, the other - processed by the proposed method for 20 minutes with the formation of a 7% liquid phase. The required pressure for the untreated ingot is 280 bar, and for the ingot treated according to the invention, 238 bar, i.e. 17% less. P & mire 5. Two ingots of alloy AH4SG of the same composition and dimensions as in Example 1 are extruded through a tongue matrix to obtain a 25x x 25 Mf.i square section tubular profile with a thickness of 2 mm; one ingot, untreated, the other - processed by the proposed method for 30 minutes at 585 ° C in order to obtain a 6% liquid phase. Extrusion of the AH4SG alloy through the tongue matrix is somewhat unusual. In this special case it is conducted with mediocre results, with poor surface appearance and at a pressure of 290 bar, which is close to the allowable limit for a press of 800 tons. In contrast to extrusion of an ingot processed according to invention, gives excellent results and does not require a pressure greater than 210 bar.
    Example 6. A single ingot of Li43C alloy of the same composition and size as in Example 1 was treated in the described manner by holding for 15 minutes at 620 ° C to obtain a 25% liquid phase. The ingot is then placed in an extrusion press container. In order to avoid any risk of deformation, the processing and transportation of the ingot from the heating furnace to the press are carried out in a horizontal semi-circular cradle.
    At a pressure not exceeding 220 bar, without any difficulty, the profile of 40x3 mm is extruded. The 800-ton press used for the experiment does not allow, under normal conditions, extruding a 40x3 profile from an AH4SG alloy (100 mm ingot heated to 420-450 0. In this case, applying the proposed method provides important advantages.
    Example 7. A cylindrical ingot with a diameter of 100 mm and a length of 300 mm from AI431 alloy was incubated for 15 minutes at 585s to form 6% of the liquid phase, and then cooled to ambient temperature, heated again to 595 ° C, quickly placed in heated to 420 The -450c container of an 800-ton extrusion press is immediately extruded at a speed of 8 m / min to a rectangular section profile of 40x3 mm. The cooling of the matrix with water is regulated so that the profile temperature at the outlet is about 450c.
    The results of this experiment were the same as in example 1. This shows that heating to the selected temperature instantly restores in the ingot previously processed according to the invention and then cooled, its re-tropical properties.
    Example B: AH4SG alloy is made by stamping a compressor connecting rod (a distance of 100 mm between the axes of the piston and the crankshaft); Usually such a connecting rod requires a rough and finishing pass.
    Heating the workpiece for
    5–15 min at 595-s to get 6% of the liquid phase, it is possible to make such a connecting rod in one pass of stamping at a pressure of 40 bar in the hydraulic system of the press (instead of 100 bar in normal conditions),
    0
    权利要求:
    Claims (1)
    [1]
    1. Reference guide Aluminum alloys. Production of semi-products from aluminum alloys, Metallurgists, 1971, pp.177-193.
    0
    类似技术:
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    同族专利:
    公开号 | 公开日
    JPS5615455B2|1981-04-10|
    NL182415B|1987-10-01|
    DE2514355B2|1979-03-15|
    DD117372A5|1976-01-12|
    NL7503992A|1975-10-07|
    SE7503775L|1975-10-06|
    ES436216A1|1977-01-01|
    GB1502114A|1978-02-22|
    DE2514355A1|1975-10-09|
    FR2266748A1|1975-10-31|
    CA1047223A|1979-01-30|
    DE2514386B2|1976-08-05|
    NO141942B|1980-02-25|
    JPS50136210A|1975-10-29|
    JPS5615454B2|1981-04-10|
    CH602928A5|1978-08-15|
    IT1034783B|1979-10-10|
    NL7503994A|1975-10-07|
    DE2514386A1|1975-10-09|
    CA1045783A|1979-01-09|
    NL182416C|1988-03-01|
    DD117486A5|1976-01-12|
    SE420801B|1981-11-02|
    ZA752151B|1976-03-31|
    SE7503776L|1975-10-06|
    FR2266748B1|1977-04-15|
    NO141942C|1980-06-04|
    AU7974075A|1976-10-07|
    NO751114L|1975-10-07|
    IT1034784B|1979-10-10|
    GB1499934A|1978-02-01|
    JPS50136209A|1975-10-29|
    IL47002D0|1975-06-25|
    IL47001A|1977-12-30|
    NO751115L|1975-10-07|
    FR2266749A1|1975-10-31|
    LU69788A1|1976-03-17|
    DE2514355C3|1984-10-04|
    ZA752150B|1976-03-31|
    CH603805A5|1978-08-31|
    FR2266749B1|1977-04-15|
    BE827496A|1975-07-31|
    ES436217A1|1977-01-01|
    NO141943C|1980-06-04|
    IL47002A|1977-12-30|
    NO141943B|1980-02-25|
    IL47001D0|1975-06-25|
    NL182415C|1988-03-01|
    BE827497A|1975-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CA957180A|1971-06-16|1974-11-05|Massachusetts, Institute Of Technology|Alloy compositions containing non-dendritic solids and process for preparing and casting same|DE2965262D1|1978-03-08|1983-06-01|Massachusetts Inst Technology|A process for refining a non-eutectic metal alloy|
    US4694881A|1981-12-01|1987-09-22|The Dow Chemical Company|Method for making thixotropic materials|
    US4694882A|1981-12-01|1987-09-22|The Dow Chemical Company|Method for making thixotropic materials|
    US4415374A|1982-03-30|1983-11-15|International Telephone And Telegraph Corporation|Fine grained metal composition|
    US4524820A|1982-03-30|1985-06-25|International Telephone And Telegraph Corporation|Apparatus for providing improved slurry cast structures by hot working|
    US4569218A|1983-07-12|1986-02-11|Alumax, Inc.|Apparatus and process for producing shaped metal parts|
    EP0139168A1|1983-09-20|1985-05-02|Alumax Inc.|Fine grained metal composition|
    US5133811A|1986-05-12|1992-07-28|University Of Sheffield|Thixotropic materials|
    US4938052A|1986-07-08|1990-07-03|Alumax, Inc.|Can containment apparatus|
    US4687042A|1986-07-23|1987-08-18|Alumax, Inc.|Method of producing shaped metal parts|
    US4712413A|1986-09-22|1987-12-15|Alumax, Inc.|Billet heating process|
    FR2665654B1|1990-08-09|1994-06-24|Armines|PRESSURE CASTING MACHINE OF A THIXOTROPIC METAL ALLOY.|
    CH683267A5|1991-06-10|1994-02-15|Alusuisse Lonza Services Ag|A method for heating a workpiece of a metal alloy.|
    IT1278069B1|1994-05-17|1997-11-17|Honda Motor Co Ltd|ALLOY MATERIAL FOR TISSOFUSION, PROCEDURE FOR THE PREPARATION OF SEMI-CAST ALLOY MATERIAL FOR TISSOFUSION AND PROCEDURE FOR|
    DE4420533A1|1994-06-14|1995-12-21|Salzburger Aluminium Ag|Process for the production of castings from aluminum alloys|
    US5571346A|1995-04-14|1996-11-05|Northwest Aluminum Company|Casting, thermal transforming and semi-solid forming aluminum alloys|
    US5758707A|1995-10-25|1998-06-02|Buhler Ag|Method for heating metallic body to semisolid state|
    FR2746414B1|1996-03-20|1998-04-30|Pechiney Aluminium|THIXOTROPE ALUMINUM-SILICON-COPPER ALLOY FOR SHAPING IN SEMI-SOLID CONDITION|
    FR2747327B1|1996-04-11|1998-06-12|Pechiney Recherche|METHOD AND TOOL FOR HIGH SPEED SPINNING OF ALUMINUM ALLOYS AND PROFILE OBTAINED|
    EP0839589A1|1996-11-04|1998-05-06|Alusuisse Technology & Management AG|Method for producing a metallic profiled strand|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    LU69788A|LU69788A1|1974-04-04|1974-04-04|
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