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    • 41. 发明公开
    • 선압축변형을 이용하여 저주기 피로 수명이 향상된 마그네슘 합금 가공재의 제조방법
    • 使用预应变制造具有改进的低周期疲劳寿命的镁合金的方法
    • KR1020110007810A
    • 2011-01-25
    • KR1020090065438
    • 2009-07-17
    • 포항공과대학교 산학협력단
    • 박성혁이종수홍성구이병호
    • C22F1/06
    • C22F1/06
    • PURPOSE: A method for manufacturing magnesium alloy worked material having improved low-cycle fatigue life using pre-straining is provided to improve the stability of components and enlarge the application area of magnesium alloy worked material by the improvement of fatigue characteristic. CONSTITUTION: A method for manufacturing magnesium alloy worked material having improved low-cycle fatigue life using pre-straining comprises following steps. A pre-straining process is performed in magnesium alloy worked material. Twin crystals are created on the magnesium alloy worked material. The pre-straining process is performed at the deformation ratio 1~15%. The low cycle fatigue life is improved since the pre-straining process is performed.
    • 目的:提供一种通过预应变制造具有改善的低周疲劳寿命的镁合金加工材料的方法,以通过改善疲劳特性来提高部件的稳定性并扩大镁合金加工材料的应用面积。 构成:使用预应变来制造具有改善的低周疲劳寿命的镁合金加工材料的方法包括以下步骤。 在镁合金加工材料中进行预应变过程。 在镁合金加工材料上形成双晶。 预应变过程以1〜15%的变形率进行。 自从进行预应变过程以来,低循环疲劳寿命得到改善。
    • 42. 发明公开
    • 초소성 성형용 티타늄 합금의 제조 방법
    • 钛合金超塑成型的制造方法
    • KR1020090121934A
    • 2009-11-26
    • KR1020080048101
    • 2008-05-23
    • 포항공과대학교 산학협력단
    • 고영건신동혁박찬희이종수
    • C22F1/18C22F1/16
    • C22F1/183B21B3/00C22C14/00
    • PURPOSE: A manufacturing method of titanium alloy for super-plastic forming is provided to enhance the super plasticity characteristic of the titanium alloy for super-plastic forming by using titanium alloy including aluminium(Al) and vanadium(V). CONSTITUTION: The Ti alloy is prepared(ST10). The Ti alloy is rolled at the temperature of 775°C~875°C with the amount of deformation more than 0.9(ST20). The Ti alloy is rolled in the deformation rate of 0.0007/sec~0.13/sec. The Ti alloy is rolled at the temperature of 775°C~825°C and in the deformation rate of 0.07/sec~0.13/sec and the mount of 1.4 or greater. The Ti alloy is rolled at the temperature of 775°C~825°C and in the deformation rate of 0.007/sec~0.013/sec and the mount of 1.0 or greater. The Ti alloy is rolled at the temperature of 775°C~825°C and in the deformation rate of 0.0007/sec~0.0013/sec and the mount of 1.0 or greater. The Ti alloy is rolled at the temperature of 825°C~875°C and in the deformation rate of 0.07/sec~0.13/sec and the mount of 1.8 or greater. The Ti alloy is rolled at the temperature of 825°C~875°C and in the deformation rate of 0.007/sec~0.013/sec and the mount of 1.8 or greater. The Ti alloy is rolled at the temperature of 825°C~875°C and in the deformation rate of 0.0007/sec~0.0013/sec and the mount of 1.8 or greater. The Ti alloy includes aluminium and vanadium.
    • 目的:提供一种用于超塑性成型的钛合金的制造方法,以通过使用包括铝(Al)和钒(V)的钛合金来增强用于超塑性成型的钛合金的超塑性特性。 构成:制备Ti合金(ST10)。 Ti合金在775℃〜875℃的温度下轧制,变形量大于0.9(ST20)。 Ti合金以0.0007 /秒〜0.13 /秒的变形率轧制。 Ti合金在775℃〜825℃的温度下以0.07 /秒〜0.13 /秒的变形速度轧制,并且安装在1.4以上。 Ti合金在775℃〜825℃的温度下以0.007 /秒〜0.013 /秒的变形率进行轧制,其载荷为1.0以上。 Ti合金在775℃〜825℃的温度下以0.0007 /秒〜0.0013 /秒的变形率进行轧制,其载荷为1.0以上。 Ti合金在825℃〜875℃的温度下以0.07 /秒〜0.13 /秒的变形率进行轧制,其载荷为1.8以上。 Ti合金在825℃〜875℃的温度下以0.007 /秒〜0.013 /秒的变形率进行轧制,其载荷为1.8以上。 Ti合金在825℃〜875℃的温度下以0.0007 /秒〜0.0013 /秒的变形率进行轧制,其载荷为1.8以上。 Ti合金包括铝和钒。
    • 44. 发明授权
    • 순수 타이타늄 판재의 성형성 향상방법 및 이에 의해 제조되는 순수 타이타늄 판재
    • 一种改善纯钛板材和由此制成的纯钛板材的成型性的方法
    • KR101773602B1
    • 2017-08-31
    • KR1020160034468
    • 2016-03-23
    • 포항공과대학교 산학협력단
    • 원종우이종수홍성구김지수권영진
    • C21D8/02C21D11/00
    • C21D8/0268C21D8/0236C21D11/00
    • 본발명은 (a) 순수타이타늄판재를압연하는제1차냉간압연단계; (b) 상기제1차냉간압연한판재를제1차열처리하는단계; (c) 상기제1차열처리된판재를압연하는제2차냉간압연단계; 및 (d) 상기제2차냉간압연한판재를제2차열처리하는단계;를포함하는순수타이타늄판재의성형성향상방법을제공한다. 본발명의순수타이타늄판재의성형성향상방법은제1차냉간압연단계실시후에제1차열처리를수행함으로써타이타늄판재에쌍정을용이하게형성시킬수 있는재결정된미세조직을형성시키고, 상기제1차열처리에이어서쌍정에의한집합조직분산효과를극대화시킬수 있는최적의압하율로제2차냉간압연단계를실시한후 최종열처리함으로써, 쌍정에의한집합조직분산효과로인해순수타이타늄판재의성형성을현저히증가시킬수 있다.
    • (A)轧制纯钛板的第一冷轧步骤; (b)使第一冷轧板经受第一热处理; (c)轧制第一热处理板材的第二冷轧步骤; (d)对第二冷轧板进行第二次热处理以提高纯钛板的可铸性。 本发明的提高纯钛板材的润湿性的方法包括以下步骤:通过在第一冷轧步骤之后进行第一热处理,在钛板上形成能够容易地形成孪晶的再结晶组织, 随后,在最大化孪生效果的最佳压下步骤之后的第二次冷轧步骤之后,由于孪生效应,纯钛片的最终质地可以显着提高。
    • 48. 发明公开
    • 우수한 강도와 연성을 갖는 초미세결정립 다상 타이타늄 합금 및 그 제조방법
    • 具有优异强度和坚固性的超细晶粒多相钛合金及其制造方法
    • KR1020140110523A
    • 2014-09-17
    • KR1020130025011
    • 2013-03-08
    • 포항공과대학교 산학협력단
    • 이태경이종수허윤욱이용문
    • C22F1/18C22C14/00
    • C22F1/183B21B3/00C22C14/00
    • The present invention relates to a titanium alloy having a low elastic coefficient and excellent biocompatibility and having strength higher than that of a conventional medical titanium alloy and a remarkably improved ductility, thereby being suitably applied especially in a medical field, and a method for manufacturing thereof. According to the present invention, a method for manufacturing a titanium alloy includes (a) heat-treating a titanium alloy at or above a beta transformation temperature; (b) water-cooling the heat-treated titanium alloy; (c) plastic working the titanium alloy by applying deformation amount equal to or greater than 80% with respect to a cross-section reduction rate to the water-cooled titanium alloy at temperatures ranging from 500-700°C; and (d) water-cooling the plastic-worked titanium alloy.
    • 本发明涉及具有低弹性系数和优异的生物相容性并且具有比常规医用钛合金高的强度和显着改善的延展性的钛合金,因此特别适用于医疗领域及其制造方法 。 根据本发明,钛合金的制造方法包括:(a)在β相变温度以上进行钛合金的热处理; (b)对经热处理的钛合金进行水冷; (c)通过在500-700℃的温度范围内对水冷钛合金的横截面减小率施加等于或大于80%的变形量来塑性加工钛合金; 和(d)对塑料加工的钛合金进行水冷。