• 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:
    The present invention relates to a unique and advantageous method making possible a superior technical and economical separation of cemented carbide bodies based upon their com­positions and structures. The critical point of the method is, that after formation of a melt by melting of the binder metal including dis­solved elements from the hard constituents there are so strong driving forces dependent on the grain size vari­ables, proportions and compositions of the hard constituent phases, that melt is re-distributed between cemented car­bide bodies in communicating contact. The re-distribution is determined by differences of mean grain sizes, grain size distributions, relative proportions and compositions of the hard constituent phases of the bodies.
    公开号:SU1528336A3
    申请号:SU874028943
    申请日:1987-02-04
    公开日:1989-12-07
    发明作者:Свен Густаф Экемар Карл；Эрнст Юттерштрем Ульф；Ингвар Андерссон Пер
    申请人:Зантраде Лтд.；
    IPC主号:
    专利说明:

    Their orientation relative to each other. All inserts have direct metal contact. Ten inserts are placed in each pallet, each carrying a pitch is equal to 20 g. 450 kg of processed products - inserts are loaded into the furnace. The whole batch is heated to 1 25 25 ° C and maintained at this temperature for 1 h under a hydrogen atmosphere. After cooling, a batch of inserts are removed from the oven. The separation of the inserts is carried out on a pneumatic vibration system. 90% by weight of the inserts have less than 4 metallurgically related material of another grade. After separating each insert from the rest, it is directed to a weighing machine in a magnetic field and outside the latter, and then to a sorting device, the mode of which is controlled by a microprocessor based on the weight data of the products. The automaton divides the entire batch into two additional batches, the number of products in which is equal to the ratio 2. 1. Samples from each additional batch, one of which is C with a large number of products, and the other D with a smaller one, are subjected to chemical analysis to determine the density, hardness and structural characteristics. The results are presented in table. 2
    Heat treatment of products makes it possible to rationally separate the inserts of the initial batches A and B, which have undergone heat treatment and preliminary separation of the insert, is subjected to secondary treatment in accordance with the zinc process technology in order to obtain a powder material.
    Example 2. Two initial batches of cutting inserts of the brand SPUN 120308 are assembled into one common batch. One of these batches A has three times the inserts more than the other batch B. Cutting inserts in the batch are coated with titanium carbide. The grades or grades of carbide products of the two original batches are different.
    Information about the initial batches is given in table. Zo
    0
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    0
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    0
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    0
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    0
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    Inserts will be placed on graphite trays using in-line feeders C) dinosaurs and layers with an arbitrary orientation relative to. friend The inserts are in direct metallic contact with each other. The oven is loaded with 300 kg of inserts. The total batch is heated to 1500 ° C and maintained at this temperature for 2 hours. Then the batch is cooled to room temperature, 95% by weight of the deposit have 3% by weight of metallurgically bound material of a different grade of nln brand. The results of chemical analysis show that the inserts Partin A show, after heat treatment, a decrease in cobalt to 5.1 wt%, and liners of batch B show an increase in cobalt to 7.1 wt.%. Separated from each other inserts are passed through an automaton, which includes a device for measuring the cobalt content in the liner material using an emission spectroscope connected to a sorting device, the mode of operation of which is controlled by a microprocessor based on analysis data. Optimal operation of the sorting device is maintained by periodic calibration using standard bodies. The number of inserts from batch A as a result of heat treatment is three times the number of inserts in batch B. Heat treatment is carried out with a radiation duration from the arc for a minimum of 2 seconds for each insert, the final stage of the processing of cemented carbide products into a powdered material is carried out using a zinc process .
    The optimal method in the proposed method is the heat treatment of carbide products at 1250-2500 s, mainly at 1350-2350 ° C, and under specific conditions at 1400-2200 ° C, the duration of the heat treatment is within no more than 10 hours, mostly no more 8 h. The reported contact of products is synonymous with the redistribution of the melt, which occurs with minimal bond formation between the products. In order to achieve an acceptable separation into k (the resistive and structural classes need to be, but at least 65 dogs, %, preferably 75% by weight, 7, and under specific conditions, 85% by weight of the products to be processed included bodies that, after mechapic separation, contain at most 10% by weight, mostly 7.5% by weight, and under specific conditions 5 wt.% of metallurgical material of various types bonded. Due to well-balanced maintenance cycles of the temperature level and duration of the thermal effect using the proposed method, an effective means is realized for the re-distribution of the melt in the solid m material.
    five
    C) o r m u l a and 3 o b r f t V m and
    A method for processing solid substances, inclusions, separation of carbide and bonding metal by means of pbr. Optics of hard-alloy products in zinc, heating, and perenepamui rink, characterized by the fact that, in order to improve the efficiency of the process, it is - scaled products collect ich of different grades or grades of hard alloys in a batch and heat treatment to redistribute metal binder at 1250-2500 s for no more than 10 hours, and the product is heat-reduced in partial, d or full 11 contact one Happy Birthday GIM.
    Table 1
    table 2
    Table 3
    权利要求:
    Claims (2)
    [1]
    1 94 6 14.9 1400-1450
    [2]
    2 94 6 14.9 1525-1575
    table 2 Additional party Composition, wt.% Raft-g / cm 1Tverreach byVickersous Wolfram carbide Cobalt
    C 94.9 5.1 15.0 1475-1500
    D 92.3 7.7 14.7 1500-1525
    Table 3
    Steamtiya Composition, weight. % Vickers hardness Wolfram carbide Cobalt TiC orTaS, orNbc A 85.9 5.5 8.6 IN 92.3 6.0 1.7
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    同族专利:
    公开号 | 公开日
    EP0233162B1|1994-04-13|
    SE457089B|1988-11-28|
    CN1011949B|1991-03-13|
    JPH0816251B2|1996-02-21|
    KR870008042A|1987-09-23|
    EP0233162A2|1987-08-19|
    DE3789562T2|1994-07-21|
    CN87102170A|1988-03-09|
    EP0233162A3|1989-07-19|
    JPS62185839A|1987-08-14|
    CA1294788C|1992-01-28|
    ATE104368T1|1994-04-15|
    SE8600503D0|1986-02-05|
    DE3789562D1|1994-05-19|
    SE8600503L|1987-08-06|
    US4772339A|1988-09-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US32111A|1861-04-23|Apparatus for making roofing-cloth |
    GB606117A|1945-06-07|1948-08-06|George Joseph Trapp|Method of recovering hard metal carbides and bond metals from sintered masses|
    GB623577A|1946-10-24|1949-05-19|Ernst Adalbert Pokorny|Process of recovery of hard metal carbides from sintered hard metal scrap|
    CH274914A|1948-10-02|1951-04-30|Joseph Trapp George|Process for the recovery of hard metal carbide.|
    SE399911C|1976-02-05|1980-01-31|Sandvik Ab|Wear detail with high durability and good toughness, composed of solid metal and cast iron|
    DE2726817C2|1977-06-14|1982-08-12|Starck, Hermann C., 1000 Berlin|Process for the recovery of Ta C-WC-TiC mixed carbides from hard metal scrap|
    JPS5421904A|1977-07-21|1979-02-19|Toshiba Corp|Method of separating chips of cemented carbide|
    US4230462A|1978-12-08|1980-10-28|Ford Motor Company|Method of improving tool life of TiC base tools|
    USRE32111E|1980-11-06|1986-04-15|Fansteel Inc.|Coated cemented carbide bodies|
    US4357382A|1980-11-06|1982-11-02|Fansteel Inc.|Coated cemented carbide bodies|
    US4470956A|1982-10-18|1984-09-11|Gte Products Corporation|Method of recovering metal carbides|
    US4466945A|1982-10-18|1984-08-21|Gte Products Corporation|Method of recovering metal carbides|JP3305357B2|1992-05-21|2002-07-22|
    US5679445A|1994-12-23|1997-10-21|Kennametal Inc.|Composite cermet articles and method of making|
    US5541006A|1994-12-23|1996-07-30|Kennametal Inc.|Method of making composite cermet articles and the articles|
    US5762843A|1994-12-23|1998-06-09|Kennametal Inc.|Method of making composite cermet articles|
    US5623723A|1995-08-11|1997-04-22|Greenfield; Mark S.|Hard composite and method of making the same|
    US6183687B1|1995-08-11|2001-02-06|Kennametal Inc.|Hard composite and method of making the same|
    US6908688B1|2000-08-04|2005-06-21|Kennametal Inc.|Graded composite hardmetals|
    SE532704C2|2008-03-31|2010-03-23|Atlas Copco Secoroc Ab|Procedure for increasing the toughness of pins for a rock drill tool.|
    FR2976284B1|2011-06-09|2013-05-24|Servier Lab|NOVEL CO-CRYSTALS OF AGOMELATIN, PROCESS FOR THEIR PREPARATION AND THE PHARMACEUTICAL COMPOSITIONS CONTAINING THEM|
    EP2535432A1|2011-06-17|2012-12-19|Sandvik Intellectual Property AB|Method for handling hard metal|
    EP2952260B1|2014-06-05|2017-03-08|Sandvik Intellectual Property AB|A method for sorting a collection of bodies comprising cemented carbide bodies and non-cemented carbide bodies|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8600503A|SE457089B|1986-02-05|1986-02-05|PROVIDED TO TREAT A MIXTURE OF CARBON METAL BODIES TO Separate THESE FROM EACH OTHER ON THE BASIS OF THEIR COMPOSITIONS AND / OR STRUCTURES|
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